diff --git a/thirdparty/libpng/CMakeLists.txt b/thirdparty/libpng/CMakeLists.txt
index 840bd850a..ba959e341 100644
--- a/thirdparty/libpng/CMakeLists.txt
+++ b/thirdparty/libpng/CMakeLists.txt
@@ -1,5 +1,8 @@
project(libpng C)
+string(REPLACE "-Wconversion" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+string(REPLACE "-Wsign-conversion" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+
include_directories(
"${CMAKE_CURRENT_SOURCE_DIR}"
${OPENJPEG_SOURCE_DIR}/thirdparty/include
diff --git a/thirdparty/libpng/LICENSE b/thirdparty/libpng/LICENSE
index d48a293cd..25f298f0f 100644
--- a/thirdparty/libpng/LICENSE
+++ b/thirdparty/libpng/LICENSE
@@ -1,50 +1,82 @@
+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
+=========================================
-This copy of the libpng notices is provided for your convenience. In case of
-any discrepancy between this copy and the notices in the file png.h that is
-included in the libpng distribution, the latter shall prevail.
+PNG Reference Library License version 2
+---------------------------------------
-COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+ * Copyright (c) 1995-2024 The PNG Reference Library Authors.
+ * Copyright (c) 2018-2024 Cosmin Truta.
+ * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
+ * Copyright (c) 1996-1997 Andreas Dilger.
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
-If you modify libpng you may insert additional notices immediately following
-this sentence.
+The software is supplied "as is", without warranty of any kind,
+express or implied, including, without limitation, the warranties
+of merchantability, fitness for a particular purpose, title, and
+non-infringement. In no event shall the Copyright owners, or
+anyone distributing the software, be liable for any damages or
+other liability, whether in contract, tort or otherwise, arising
+from, out of, or in connection with the software, or the use or
+other dealings in the software, even if advised of the possibility
+of such damage.
-This code is released under the libpng license.
+Permission is hereby granted to use, copy, modify, and distribute
+this software, or portions hereof, for any purpose, without fee,
+subject to the following restrictions:
-libpng versions 1.0.7, July 1, 2000 through 1.6.25, September 1, 2016 are
-Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
+ 1. The origin of this software must not be misrepresented; you
+ must not claim that you wrote the original software. If you
+ use this software in a product, an acknowledgment in the product
+ documentation would be appreciated, but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 3. This Copyright notice may not be removed or altered from any
+ source or altered source distribution.
+
+
+PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)
+-----------------------------------------------------------------------
+
+libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are
+Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are
derived from libpng-1.0.6, and are distributed according to the same
disclaimer and license as libpng-1.0.6 with the following individuals
added to the list of Contributing Authors:
- Simon-Pierre Cadieux
- Eric S. Raymond
- Mans Rullgard
- Cosmin Truta
- Gilles Vollant
- James Yu
+ Simon-Pierre Cadieux
+ Eric S. Raymond
+ Mans Rullgard
+ Cosmin Truta
+ Gilles Vollant
+ James Yu
+ Mandar Sahastrabuddhe
+ Google Inc.
+ Vadim Barkov
and with the following additions to the disclaimer:
- There is no warranty against interference with your enjoyment of the
- library or against infringement. There is no warranty that our
- efforts or the library will fulfill any of your particular purposes
- or needs. This library is provided with all faults, and the entire
- risk of satisfactory quality, performance, accuracy, and effort is with
- the user.
+ There is no warranty against interference with your enjoyment of
+ the library or against infringement. There is no warranty that our
+ efforts or the library will fulfill any of your particular purposes
+ or needs. This library is provided with all faults, and the entire
+ risk of satisfactory quality, performance, accuracy, and effort is
+ with the user.
Some files in the "contrib" directory and some configure-generated
-files that are distributed with libpng have other copyright owners and
+files that are distributed with libpng have other copyright owners, and
are released under other open source licenses.
libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
libpng-0.96, and are distributed according to the same disclaimer and
-license as libpng-0.96, with the following individuals added to the list
-of Contributing Authors:
+license as libpng-0.96, with the following individuals added to the
+list of Contributing Authors:
- Tom Lane
- Glenn Randers-Pehrson
- Willem van Schaik
+ Tom Lane
+ Glenn Randers-Pehrson
+ Willem van Schaik
libpng versions 0.89, June 1996, through 0.96, May 1997, are
Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
@@ -52,14 +84,14 @@ and are distributed according to the same disclaimer and license as
libpng-0.88, with the following individuals added to the list of
Contributing Authors:
- John Bowler
- Kevin Bracey
- Sam Bushell
- Magnus Holmgren
- Greg Roelofs
- Tom Tanner
+ John Bowler
+ Kevin Bracey
+ Sam Bushell
+ Magnus Holmgren
+ Greg Roelofs
+ Tom Tanner
-Some files in the "scripts" directory have other copyright owners
+Some files in the "scripts" directory have other copyright owners,
but are released under this license.
libpng versions 0.5, May 1995, through 0.88, January 1996, are
@@ -68,63 +100,35 @@ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
For the purposes of this copyright and license, "Contributing Authors"
is defined as the following set of individuals:
- Andreas Dilger
- Dave Martindale
- Guy Eric Schalnat
- Paul Schmidt
- Tim Wegner
-
-The PNG Reference Library is supplied "AS IS". The Contributing Authors
-and Group 42, Inc. disclaim all warranties, expressed or implied,
-including, without limitation, the warranties of merchantability and of
-fitness for any purpose. The Contributing Authors and Group 42, Inc.
-assume no liability for direct, indirect, incidental, special, exemplary,
-or consequential damages, which may result from the use of the PNG
-Reference Library, even if advised of the possibility of such damage.
+ Andreas Dilger
+ Dave Martindale
+ Guy Eric Schalnat
+ Paul Schmidt
+ Tim Wegner
+
+The PNG Reference Library is supplied "AS IS". The Contributing
+Authors and Group 42, Inc. disclaim all warranties, expressed or
+implied, including, without limitation, the warranties of
+merchantability and of fitness for any purpose. The Contributing
+Authors and Group 42, Inc. assume no liability for direct, indirect,
+incidental, special, exemplary, or consequential damages, which may
+result from the use of the PNG Reference Library, even if advised of
+the possibility of such damage.
Permission is hereby granted to use, copy, modify, and distribute this
source code, or portions hereof, for any purpose, without fee, subject
to the following restrictions:
- 1. The origin of this source code must not be misrepresented.
-
- 2. Altered versions must be plainly marked as such and must not
- be misrepresented as being the original source.
-
- 3. This Copyright notice may not be removed or altered from any
- source or altered source distribution.
-
-The Contributing Authors and Group 42, Inc. specifically permit, without
-fee, and encourage the use of this source code as a component to
-supporting the PNG file format in commercial products. If you use this
-source code in a product, acknowledgment is not required but would be
-appreciated.
-
-END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
-
-TRADEMARK:
-
-The name "libpng" has not been registered by the Copyright owner
-as a trademark in any jurisdiction. However, because libpng has
-been distributed and maintained world-wide, continually since 1995,
-the Copyright owner claims "common-law trademark protection" in any
-jurisdiction where common-law trademark is recognized.
-
-OSI CERTIFICATION:
-
-Libpng is OSI Certified Open Source Software. OSI Certified Open Source is
-a certification mark of the Open Source Initiative. OSI has not addressed
-the additional disclaimers inserted at version 1.0.7.
+ 1. The origin of this source code must not be misrepresented.
-EXPORT CONTROL:
+ 2. Altered versions must be plainly marked as such and must not
+ be misrepresented as being the original source.
-The Copyright owner believes that the Export Control Classification
-Number (ECCN) for libpng is EAR99, which means not subject to export
-controls or International Traffic in Arms Regulations (ITAR) because
-it is open source, publicly available software, that does not contain
-any encryption software. See the EAR, paragraphs 734.3(b)(3) and
-734.7(b).
+ 3. This Copyright notice may not be removed or altered from any
+ source or altered source distribution.
-Glenn Randers-Pehrson
-glennrp at users.sourceforge.net
-September 1, 2016
+The Contributing Authors and Group 42, Inc. specifically permit,
+without fee, and encourage the use of this source code as a component
+to supporting the PNG file format in commercial products. If you use
+this source code in a product, acknowledgment is not required but would
+be appreciated.
diff --git a/thirdparty/libpng/png.c b/thirdparty/libpng/png.c
index 33e8c8f21..9ed315700 100644
--- a/thirdparty/libpng/png.c
+++ b/thirdparty/libpng/png.c
@@ -1,10 +1,10 @@
/* png.c - location for general purpose libpng functions
*
- * Last changed in libpng 1.6.25 [September 1, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -14,7 +14,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_25 Your_png_h_is_not_version_1_6_25;
+typedef png_libpng_version_1_6_43 Your_png_h_is_not_version_1_6_43;
/* Tells libpng that we have already handled the first "num_bytes" bytes
* of the PNG file signature. If the PNG data is embedded into another
@@ -51,23 +51,23 @@ png_set_sig_bytes(png_structrp png_ptr, int num_bytes)
* PNG signature (this is the same behavior as strcmp, memcmp, etc).
*/
int PNGAPI
-png_sig_cmp(png_const_bytep sig, png_size_t start, png_size_t num_to_check)
+png_sig_cmp(png_const_bytep sig, size_t start, size_t num_to_check)
{
- png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+ static const png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
if (num_to_check > 8)
num_to_check = 8;
else if (num_to_check < 1)
- return (-1);
+ return -1;
if (start > 7)
- return (-1);
+ return -1;
if (start + num_to_check > 8)
num_to_check = 8 - start;
- return ((int)(memcmp(&sig[start], &png_signature[start], num_to_check)));
+ return memcmp(&sig[start], &png_signature[start], num_to_check);
}
#endif /* READ */
@@ -116,7 +116,7 @@ png_reset_crc(png_structrp png_ptr)
* trouble of calculating it.
*/
void /* PRIVATE */
-png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length)
+png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, size_t length)
{
int need_crc = 1;
@@ -401,7 +401,7 @@ png_destroy_info_struct(png_const_structrp png_ptr, png_infopp info_ptr_ptr)
* those cases where it does anything other than a memset.
*/
PNG_FUNCTION(void,PNGAPI
-png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
+png_info_init_3,(png_infopp ptr_ptr, size_t png_info_struct_size),
PNG_DEPRECATED)
{
png_inforp info_ptr = *ptr_ptr;
@@ -427,7 +427,6 @@ png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
memset(info_ptr, 0, (sizeof *info_ptr));
}
-/* The following API is not called internally */
void PNGAPI
png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr,
int freer, png_uint_32 mask)
@@ -458,7 +457,7 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
#ifdef PNG_TEXT_SUPPORTED
/* Free text item num or (if num == -1) all text items */
- if (info_ptr->text != 0 &&
+ if (info_ptr->text != NULL &&
((mask & PNG_FREE_TEXT) & info_ptr->free_me) != 0)
{
if (num != -1)
@@ -477,6 +476,7 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
png_free(png_ptr, info_ptr->text);
info_ptr->text = NULL;
info_ptr->num_text = 0;
+ info_ptr->max_text = 0;
}
}
#endif
@@ -541,7 +541,7 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
#ifdef PNG_sPLT_SUPPORTED
/* Free a given sPLT entry, or (if num == -1) all sPLT entries */
- if (info_ptr->splt_palettes != 0 &&
+ if (info_ptr->splt_palettes != NULL &&
((mask & PNG_FREE_SPLT) & info_ptr->free_me) != 0)
{
if (num != -1)
@@ -571,7 +571,7 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
#endif
#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
- if (info_ptr->unknown_chunks != 0 &&
+ if (info_ptr->unknown_chunks != NULL &&
((mask & PNG_FREE_UNKN) & info_ptr->free_me) != 0)
{
if (num != -1)
@@ -594,6 +594,26 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
}
#endif
+#ifdef PNG_eXIf_SUPPORTED
+ /* Free any eXIf entry */
+ if (((mask & PNG_FREE_EXIF) & info_ptr->free_me) != 0)
+ {
+# ifdef PNG_READ_eXIf_SUPPORTED
+ if (info_ptr->eXIf_buf)
+ {
+ png_free(png_ptr, info_ptr->eXIf_buf);
+ info_ptr->eXIf_buf = NULL;
+ }
+# endif
+ if (info_ptr->exif)
+ {
+ png_free(png_ptr, info_ptr->exif);
+ info_ptr->exif = NULL;
+ }
+ info_ptr->valid &= ~PNG_INFO_eXIf;
+ }
+#endif
+
#ifdef PNG_hIST_SUPPORTED
/* Free any hIST entry */
if (((mask & PNG_FREE_HIST) & info_ptr->free_me) != 0)
@@ -617,7 +637,7 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
/* Free any image bits attached to the info structure */
if (((mask & PNG_FREE_ROWS) & info_ptr->free_me) != 0)
{
- if (info_ptr->row_pointers != 0)
+ if (info_ptr->row_pointers != NULL)
{
png_uint_32 row;
for (row = 0; row < info_ptr->height; row++)
@@ -645,9 +665,9 @@ png_voidp PNGAPI
png_get_io_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
- return (NULL);
+ return NULL;
- return (png_ptr->io_ptr);
+ return png_ptr->io_ptr;
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@@ -679,12 +699,12 @@ png_init_io(png_structrp png_ptr, png_FILE_p fp)
*
* Where UNSIGNED_MAX is the appropriate maximum unsigned value, so when the
* negative integral value is added the result will be an unsigned value
- * correspnding to the 2's complement representation.
+ * corresponding to the 2's complement representation.
*/
void PNGAPI
png_save_int_32(png_bytep buf, png_int_32 i)
{
- png_save_uint_32(buf, i);
+ png_save_uint_32(buf, (png_uint_32)i);
}
# endif
@@ -695,7 +715,7 @@ png_save_int_32(png_bytep buf, png_int_32 i)
int PNGAPI
png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
{
- static PNG_CONST char short_months[12][4] =
+ static const char short_months[12][4] =
{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
@@ -711,7 +731,7 @@ png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
{
size_t pos = 0;
- char number_buf[5]; /* enough for a four-digit year */
+ char number_buf[5] = {0, 0, 0, 0, 0}; /* enough for a four-digit year */
# define APPEND_STRING(string) pos = png_safecat(out, 29, pos, (string))
# define APPEND_NUMBER(format, value)\
@@ -773,20 +793,14 @@ png_get_copyright(png_const_structrp png_ptr)
#ifdef PNG_STRING_COPYRIGHT
return PNG_STRING_COPYRIGHT
#else
-# ifdef __STDC__
return PNG_STRING_NEWLINE \
- "libpng version 1.6.25 - September 1, 2016" PNG_STRING_NEWLINE \
- "Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson" \
+ "libpng version 1.6.43" PNG_STRING_NEWLINE \
+ "Copyright (c) 2018-2024 Cosmin Truta" PNG_STRING_NEWLINE \
+ "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
-# else
- return "libpng version 1.6.25 - September 1, 2016\
- Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson\
- Copyright (c) 1996-1997 Andreas Dilger\
- Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
-# endif
#endif
}
@@ -901,7 +915,7 @@ png_handle_as_unknown(png_const_structrp png_ptr, png_const_bytep chunk_name)
/* The code is the fifth byte after each four byte string. Historically this
* code was always searched from the end of the list, this is no longer
- * necessary because the 'set' routine handles duplicate entries correcty.
+ * necessary because the 'set' routine handles duplicate entries correctly.
*/
do /* num_chunk_list > 0, so at least one */
{
@@ -942,7 +956,7 @@ png_reset_zstream(png_structrp png_ptr)
return Z_STREAM_ERROR;
/* WARNING: this resets the window bits to the maximum! */
- return (inflateReset(&png_ptr->zstream));
+ return inflateReset(&png_ptr->zstream);
}
#endif /* READ */
@@ -951,7 +965,7 @@ png_uint_32 PNGAPI
png_access_version_number(void)
{
/* Version of *.c files used when building libpng */
- return((png_uint_32)PNG_LIBPNG_VER);
+ return (png_uint_32)PNG_LIBPNG_VER;
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@@ -1080,7 +1094,7 @@ png_colorspace_set_gamma(png_const_structrp png_ptr,
png_colorspacerp colorspace, png_fixed_point gAMA)
{
/* Changed in libpng-1.5.4 to limit the values to ensure overflow can't
- * occur. Since the fixed point representation is asymetrical it is
+ * occur. Since the fixed point representation is asymmetrical it is
* possible for 1/gamma to overflow the limit of 21474 and this means the
* gamma value must be at least 5/100000 and hence at most 20000.0. For
* safety the limits here are a little narrower. The values are 0.00016 to
@@ -1807,14 +1821,14 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
}
# ifdef PNG_WARNINGS_SUPPORTED
else
- {
- char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
+ {
+ char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
- pos = png_safecat(message, (sizeof message), pos,
- png_format_number(number, number+(sizeof number),
- PNG_NUMBER_FORMAT_x, value));
- pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/
- }
+ pos = png_safecat(message, (sizeof message), pos,
+ png_format_number(number, number+(sizeof number),
+ PNG_NUMBER_FORMAT_x, value));
+ pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
+ }
# endif
/* The 'reason' is an arbitrary message, allow +79 maximum 195 */
pos = png_safecat(message, (sizeof message), pos, reason);
@@ -1872,12 +1886,12 @@ png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
*/
if (intent < 0 || intent >= PNG_sRGB_INTENT_LAST)
return png_icc_profile_error(png_ptr, colorspace, "sRGB",
- (unsigned)intent, "invalid sRGB rendering intent");
+ (png_alloc_size_t)intent, "invalid sRGB rendering intent");
if ((colorspace->flags & PNG_COLORSPACE_HAVE_INTENT) != 0 &&
colorspace->rendering_intent != intent)
return png_icc_profile_error(png_ptr, colorspace, "sRGB",
- (unsigned)intent, "inconsistent rendering intents");
+ (png_alloc_size_t)intent, "inconsistent rendering intents");
if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0)
{
@@ -1938,7 +1952,6 @@ icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
if (profile_length < 132)
return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
"too short");
-
return 1;
}
@@ -2027,7 +2040,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
*/
/* Data checks (could be skipped). These checks must be independent of the
- * version number; however, the version number doesn't accomodate changes in
+ * version number; however, the version number doesn't accommodate changes in
* the header fields (just the known tags and the interpretation of the
* data.)
*/
@@ -2183,22 +2196,23 @@ png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
* being in range. All defined tag types have an 8 byte header - a 4 byte
* type signature then 0.
*/
+
+ /* This is a hard error; potentially it can cause read outside the
+ * profile.
+ */
+ if (tag_start > profile_length || tag_length > profile_length - tag_start)
+ return png_icc_profile_error(png_ptr, colorspace, name, tag_id,
+ "ICC profile tag outside profile");
+
if ((tag_start & 3) != 0)
{
- /* CNHP730S.icc shipped with Microsoft Windows 64 violates this, it is
+ /* CNHP730S.icc shipped with Microsoft Windows 64 violates this; it is
* only a warning here because libpng does not care about the
* alignment.
*/
(void)png_icc_profile_error(png_ptr, NULL, name, tag_id,
"ICC profile tag start not a multiple of 4");
}
-
- /* This is a hard error; potentially it can cause read outside the
- * profile.
- */
- if (tag_start > profile_length || tag_length > profile_length - tag_start)
- return png_icc_profile_error(png_ptr, colorspace, name, tag_id,
- "ICC profile tag outside profile");
}
return 1; /* success, maybe with warnings */
@@ -2497,17 +2511,6 @@ png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
#endif /* COLORSPACE */
-#ifdef __GNUC__
-/* This exists solely to work round a warning from GNU C. */
-static int /* PRIVATE */
-png_gt(size_t a, size_t b)
-{
- return a > b;
-}
-#else
-# define png_gt(a,b) ((a) > (b))
-#endif
-
void /* PRIVATE */
png_check_IHDR(png_const_structrp png_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
@@ -2529,8 +2532,16 @@ png_check_IHDR(png_const_structrp png_ptr,
error = 1;
}
- if (png_gt(((width + 7) & (~7)),
- ((PNG_SIZE_MAX
+ /* The bit mask on the first line below must be at least as big as a
+ * png_uint_32. "~7U" is not adequate on 16-bit systems because it will
+ * be an unsigned 16-bit value. Casting to (png_alloc_size_t) makes the
+ * type of the result at least as bit (in bits) as the RHS of the > operator
+ * which also avoids a common warning on 64-bit systems that the comparison
+ * of (png_uint_32) against the constant value on the RHS will always be
+ * false.
+ */
+ if (((width + 7) & ~(png_alloc_size_t)7) >
+ (((PNG_SIZE_MAX
- 48 /* big_row_buf hack */
- 1) /* filter byte */
/ 8) /* 8-byte RGBA pixels */
@@ -2666,7 +2677,7 @@ png_check_IHDR(png_const_structrp png_ptr,
#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
/* ASCII to fp functions */
-/* Check an ASCII formated floating point value, see the more detailed
+/* Check an ASCII formatted floating point value, see the more detailed
* comments in pngpriv.h
*/
/* The following is used internally to preserve the sticky flags */
@@ -2674,11 +2685,11 @@ png_check_IHDR(png_const_structrp png_ptr,
#define png_fp_set(state, value) ((state) = (value) | ((state) & PNG_FP_STICKY))
int /* PRIVATE */
-png_check_fp_number(png_const_charp string, png_size_t size, int *statep,
- png_size_tp whereami)
+png_check_fp_number(png_const_charp string, size_t size, int *statep,
+ size_t *whereami)
{
int state = *statep;
- png_size_t i = *whereami;
+ size_t i = *whereami;
while (i < size)
{
@@ -2801,10 +2812,10 @@ png_check_fp_number(png_const_charp string, png_size_t size, int *statep,
/* The same but for a complete string. */
int
-png_check_fp_string(png_const_charp string, png_size_t size)
+png_check_fp_string(png_const_charp string, size_t size)
{
int state=0;
- png_size_t char_index=0;
+ size_t char_index=0;
if (png_check_fp_number(string, size, &state, &char_index) != 0 &&
(char_index == size || string[char_index] == 0))
@@ -2831,7 +2842,7 @@ png_pow10(int power)
if (power < 0)
{
if (power < DBL_MIN_10_EXP) return 0;
- recip = 1, power = -power;
+ recip = 1; power = -power;
}
if (power > 0)
@@ -2857,7 +2868,7 @@ png_pow10(int power)
* precision.
*/
void /* PRIVATE */
-png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
+png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, size_t size,
double fp, unsigned int precision)
{
/* We use standard functions from math.h, but not printf because
@@ -2909,7 +2920,9 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
double test = png_pow10(exp_b10+1);
if (test <= DBL_MAX)
- ++exp_b10, base = test;
+ {
+ ++exp_b10; base = test;
+ }
else
break;
@@ -2923,7 +2936,10 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
* test on DBL_MAX above.
*/
fp /= base;
- while (fp >= 1) fp /= 10, ++exp_b10;
+ while (fp >= 1)
+ {
+ fp /= 10; ++exp_b10;
+ }
/* Because of the code above fp may, at this point, be
* less than .1, this is ok because the code below can
@@ -2940,7 +2956,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
*/
if (exp_b10 < 0 && exp_b10 > -3) /* PLUS 3 TOTAL 4 */
{
- czero = -exp_b10; /* PLUS 2 digits: TOTAL 3 */
+ czero = 0U-exp_b10; /* PLUS 2 digits: TOTAL 3 */
exp_b10 = 0; /* Dot added below before first output. */
}
else
@@ -2974,7 +2990,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
/* Rounding up to 10, handle that here. */
if (czero > 0)
{
- --czero, d = 1;
+ --czero; d = 1;
if (cdigits == 0) --clead;
}
else
@@ -2988,7 +3004,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
else if (ch == 46)
{
- ch = *--ascii, ++size;
+ ch = *--ascii; ++size;
/* Advance exp_b10 to '1', so that the
* decimal point happens after the
* previous digit.
@@ -3015,7 +3031,9 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
int ch = *--ascii;
if (ch == 46)
- ++size, exp_b10 = 1;
+ {
+ ++size; exp_b10 = 1;
+ }
/* Else lost a leading zero, so 'exp_b10' is
* still ok at (-1)
@@ -3051,21 +3069,26 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
*/
if (exp_b10 != (-1))
{
- if (exp_b10 == 0) *ascii++ = 46, --size;
+ if (exp_b10 == 0)
+ {
+ *ascii++ = 46; --size;
+ }
/* PLUS 1: TOTAL 4 */
--exp_b10;
}
- *ascii++ = 48, --czero;
+ *ascii++ = 48; --czero;
}
if (exp_b10 != (-1))
{
if (exp_b10 == 0)
- *ascii++ = 46, --size; /* counted above */
+ {
+ *ascii++ = 46; --size; /* counted above */
+ }
--exp_b10;
}
- *ascii++ = (char)(48 + (int)d), ++cdigits;
+ *ascii++ = (char)(48 + (int)d); ++cdigits;
}
}
while (cdigits+czero < precision+clead && fp > DBL_MIN);
@@ -3073,11 +3096,11 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
/* The total output count (max) is now 4+precision */
/* Check for an exponent, if we don't need one we are
- * done and just need to terminate the string. At
- * this point exp_b10==(-1) is effectively if flag - it got
- * to '-1' because of the decrement after outputting
- * the decimal point above (the exponent required is
- * *not* -1!)
+ * done and just need to terminate the string. At this
+ * point, exp_b10==(-1) is effectively a flag: it got
+ * to '-1' because of the decrement, after outputting
+ * the decimal point above. (The exponent required is
+ * *not* -1.)
*/
if (exp_b10 >= (-1) && exp_b10 <= 2)
{
@@ -3088,7 +3111,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
* zeros were *not* output, so this doesn't increase
* the output count.
*/
- while (--exp_b10 >= 0) *ascii++ = 48;
+ while (exp_b10-- > 0) *ascii++ = 48;
*ascii = 0;
@@ -3106,7 +3129,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
*/
size -= cdigits;
- *ascii++ = 69, --size; /* 'E': PLUS 1 TOTAL 2+precision */
+ *ascii++ = 69; --size; /* 'E': PLUS 1 TOTAL 2+precision */
/* The following use of an unsigned temporary avoids ambiguities in
* the signed arithmetic on exp_b10 and permits GCC at least to do
@@ -3117,12 +3140,12 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
if (exp_b10 < 0)
{
- *ascii++ = 45, --size; /* '-': PLUS 1 TOTAL 3+precision */
- uexp_b10 = -exp_b10;
+ *ascii++ = 45; --size; /* '-': PLUS 1 TOTAL 3+precision */
+ uexp_b10 = 0U-exp_b10;
}
else
- uexp_b10 = exp_b10;
+ uexp_b10 = 0U+exp_b10;
cdigits = 0;
@@ -3165,7 +3188,6 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
/* Here on buffer too small. */
png_error(png_ptr, "ASCII conversion buffer too small");
}
-
# endif /* FLOATING_POINT */
# ifdef PNG_FIXED_POINT_SUPPORTED
@@ -3173,7 +3195,7 @@ png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
*/
void /* PRIVATE */
png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
- png_size_t size, png_fixed_point fp)
+ size_t size, png_fixed_point fp)
{
/* Require space for 10 decimal digits, a decimal point, a minus sign and a
* trailing \0, 13 characters:
@@ -3184,14 +3206,16 @@ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
/* Avoid overflow here on the minimum integer. */
if (fp < 0)
- *ascii++ = 45, num = -fp;
+ {
+ *ascii++ = 45; num = (png_uint_32)(-fp);
+ }
else
- num = fp;
+ num = (png_uint_32)fp;
if (num <= 0x80000000) /* else overflowed */
{
unsigned int ndigits = 0, first = 16 /* flag value */;
- char digits[10];
+ char digits[10] = {0};
while (num)
{
@@ -3222,7 +3246,10 @@ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
* then ndigits digits to first:
*/
i = 5;
- while (ndigits < i) *ascii++ = 48, --i;
+ while (ndigits < i)
+ {
+ *ascii++ = 48; --i;
+ }
while (ndigits >= first) *ascii++ = digits[--ndigits];
/* Don't output the trailing zeros! */
}
@@ -3680,7 +3707,7 @@ png_log16bit(png_uint_32 x)
* of getting this accuracy in practice.
*
* To deal with this the following exp() function works out the exponent of the
- * frational part of the logarithm by using an accurate 32-bit value from the
+ * fractional part of the logarithm by using an accurate 32-bit value from the
* top four fractional bits then multiplying in the remaining bits.
*/
static const png_uint_32
@@ -3895,18 +3922,18 @@ png_gamma_correct(png_structrp png_ptr, unsigned int value,
*/
static void
png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable,
- PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
+ unsigned int shift, png_fixed_point gamma_val)
{
/* Various values derived from 'shift': */
- PNG_CONST unsigned int num = 1U << (8U - shift);
+ unsigned int num = 1U << (8U - shift);
#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
/* CSE the division and work round wacky GCC warnings (see the comments
* in png_gamma_8bit_correct for where these come from.)
*/
- PNG_CONST double fmax = 1./(((png_int_32)1 << (16U - shift))-1);
+ double fmax = 1.0 / (((png_int_32)1 << (16U - shift)) - 1);
#endif
- PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
- PNG_CONST unsigned int max_by_2 = 1U << (15U-shift);
+ unsigned int max = (1U << (16U - shift)) - 1U;
+ unsigned int max_by_2 = 1U << (15U - shift);
unsigned int i;
png_uint_16pp table = *ptable =
@@ -3972,10 +3999,10 @@ png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable,
*/
static void
png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
- PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
+ unsigned int shift, png_fixed_point gamma_val)
{
- PNG_CONST unsigned int num = 1U << (8U - shift);
- PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
+ unsigned int num = 1U << (8U - shift);
+ unsigned int max = (1U << (16U - shift))-1U;
unsigned int i;
png_uint_32 last;
@@ -4040,7 +4067,7 @@ png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
*/
static void
png_build_8bit_table(png_structrp png_ptr, png_bytepp ptable,
- PNG_CONST png_fixed_point gamma_val)
+ png_fixed_point gamma_val)
{
unsigned int i;
png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256);
@@ -4259,13 +4286,13 @@ png_set_option(png_structrp png_ptr, int option, int onoff)
if (png_ptr != NULL && option >= 0 && option < PNG_OPTION_NEXT &&
(option & 1) == 0)
{
- int mask = 3 << option;
- int setting = (2 + (onoff != 0)) << option;
- int current = png_ptr->options;
+ png_uint_32 mask = 3U << option;
+ png_uint_32 setting = (2U + (onoff != 0)) << option;
+ png_uint_32 current = png_ptr->options;
- png_ptr->options = (png_byte)(((current & ~mask) | setting) & 0xff);
+ png_ptr->options = (png_uint_32)((current & ~mask) | setting);
- return (current & mask) >> option;
+ return (int)(current & mask) >> option;
}
return PNG_OPTION_INVALID;
@@ -4277,7 +4304,7 @@ png_set_option(png_structrp png_ptr, int option, int onoff)
defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
/* sRGB conversion tables; these are machine generated with the code in
* contrib/tools/makesRGB.c. The actual sRGB transfer curve defined in the
- * specification (see the article at http://en.wikipedia.org/wiki/SRGB)
+ * specification (see the article at https://en.wikipedia.org/wiki/SRGB)
* is used, not the gamma=1/2.2 approximation use elsewhere in libpng.
* The sRGB to linear table is exact (to the nearest 16-bit linear fraction).
* The inverse (linear to sRGB) table has accuracies as follows:
@@ -4513,8 +4540,7 @@ png_image_free(png_imagep image)
if (image != NULL && image->opaque != NULL &&
image->opaque->error_buf == NULL)
{
- /* Ignore errors here: */
- (void)png_safe_execute(image, png_image_free_function, image);
+ png_image_free_function(image);
image->opaque = NULL;
}
}
diff --git a/thirdparty/libpng/png.h b/thirdparty/libpng/png.h
index e1f59c310..83d390312 100644
--- a/thirdparty/libpng/png.h
+++ b/thirdparty/libpng/png.h
@@ -1,73 +1,105 @@
/* png.h - header file for PNG reference library
*
- * libpng version 1.6.25, September 1, 2016
+ * libpng version 1.6.43
*
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
- * This code is released under the libpng license (See LICENSE, below)
+ * This code is released under the libpng license. (See LICENSE, below.)
*
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
- * libpng versions 0.97, January 1998, through 1.6.25, September 1, 2016:
- * Glenn Randers-Pehrson.
+ * libpng versions 0.97, January 1998, through 1.6.35, July 2018:
+ * Glenn Randers-Pehrson
+ * libpng versions 1.6.36, December 2018, through 1.6.43, February 2024:
+ * Cosmin Truta
* See also "Contributing Authors", below.
*/
/*
- * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+ * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
+ * =========================================
*
- * If you modify libpng you may insert additional notices immediately following
- * this sentence.
+ * PNG Reference Library License version 2
+ * ---------------------------------------
*
- * This code is released under the libpng license.
+ * * Copyright (c) 1995-2024 The PNG Reference Library Authors.
+ * * Copyright (c) 2018-2024 Cosmin Truta.
+ * * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
+ * * Copyright (c) 1996-1997 Andreas Dilger.
+ * * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
- * Some files in the "contrib" directory and some configure-generated
- * files that are distributed with libpng have other copyright owners and
- * are released under other open source licenses.
+ * The software is supplied "as is", without warranty of any kind,
+ * express or implied, including, without limitation, the warranties
+ * of merchantability, fitness for a particular purpose, title, and
+ * non-infringement. In no event shall the Copyright owners, or
+ * anyone distributing the software, be liable for any damages or
+ * other liability, whether in contract, tort or otherwise, arising
+ * from, out of, or in connection with the software, or the use or
+ * other dealings in the software, even if advised of the possibility
+ * of such damage.
+ *
+ * Permission is hereby granted to use, copy, modify, and distribute
+ * this software, or portions hereof, for any purpose, without fee,
+ * subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you
+ * must not claim that you wrote the original software. If you
+ * use this software in a product, an acknowledgment in the product
+ * documentation would be appreciated, but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and must
+ * not be misrepresented as being the original software.
+ *
+ * 3. This Copyright notice may not be removed or altered from any
+ * source or altered source distribution.
+ *
+ *
+ * PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)
+ * -----------------------------------------------------------------------
*
- * libpng versions 1.0.7, July 1, 2000 through 1.6.25, September 1, 2016 are
- * Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
+ * libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are
+ * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are
* derived from libpng-1.0.6, and are distributed according to the same
* disclaimer and license as libpng-1.0.6 with the following individuals
* added to the list of Contributing Authors:
*
- * Simon-Pierre Cadieux
- * Eric S. Raymond
- * Mans Rullgard
- * Cosmin Truta
- * Gilles Vollant
- * James Yu
- * Mandar Sahastrabuddhe
+ * Simon-Pierre Cadieux
+ * Eric S. Raymond
+ * Mans Rullgard
+ * Cosmin Truta
+ * Gilles Vollant
+ * James Yu
+ * Mandar Sahastrabuddhe
+ * Google Inc.
+ * Vadim Barkov
*
* and with the following additions to the disclaimer:
*
- * There is no warranty against interference with your enjoyment of the
- * library or against infringement. There is no warranty that our
- * efforts or the library will fulfill any of your particular purposes
- * or needs. This library is provided with all faults, and the entire
- * risk of satisfactory quality, performance, accuracy, and effort is with
- * the user.
+ * There is no warranty against interference with your enjoyment of
+ * the library or against infringement. There is no warranty that our
+ * efforts or the library will fulfill any of your particular purposes
+ * or needs. This library is provided with all faults, and the entire
+ * risk of satisfactory quality, performance, accuracy, and effort is
+ * with the user.
*
- * Some files in the "contrib" directory have other copyright owners and
+ * Some files in the "contrib" directory and some configure-generated
+ * files that are distributed with libpng have other copyright owners, and
* are released under other open source licenses.
*
- *
* libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
* Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
* libpng-0.96, and are distributed according to the same disclaimer and
- * license as libpng-0.96, with the following individuals added to the list
- * of Contributing Authors:
- *
- * Tom Lane
- * Glenn Randers-Pehrson
- * Willem van Schaik
+ * license as libpng-0.96, with the following individuals added to the
+ * list of Contributing Authors:
*
- * Some files in the "scripts" directory have different copyright owners
- * but are also released under this license.
+ * Tom Lane
+ * Glenn Randers-Pehrson
+ * Willem van Schaik
*
* libpng versions 0.89, June 1996, through 0.96, May 1997, are
* Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
@@ -75,14 +107,14 @@
* libpng-0.88, with the following individuals added to the list of
* Contributing Authors:
*
- * John Bowler
- * Kevin Bracey
- * Sam Bushell
- * Magnus Holmgren
- * Greg Roelofs
- * Tom Tanner
+ * John Bowler
+ * Kevin Bracey
+ * Sam Bushell
+ * Magnus Holmgren
+ * Greg Roelofs
+ * Tom Tanner
*
- * Some files in the "scripts" directory have other copyright owners
+ * Some files in the "scripts" directory have other copyright owners,
* but are released under this license.
*
* libpng versions 0.5, May 1995, through 0.88, January 1996, are
@@ -91,62 +123,49 @@
* For the purposes of this copyright and license, "Contributing Authors"
* is defined as the following set of individuals:
*
- * Andreas Dilger
- * Dave Martindale
- * Guy Eric Schalnat
- * Paul Schmidt
- * Tim Wegner
- *
- * The PNG Reference Library is supplied "AS IS". The Contributing Authors
- * and Group 42, Inc. disclaim all warranties, expressed or implied,
- * including, without limitation, the warranties of merchantability and of
- * fitness for any purpose. The Contributing Authors and Group 42, Inc.
- * assume no liability for direct, indirect, incidental, special, exemplary,
- * or consequential damages, which may result from the use of the PNG
- * Reference Library, even if advised of the possibility of such damage.
+ * Andreas Dilger
+ * Dave Martindale
+ * Guy Eric Schalnat
+ * Paul Schmidt
+ * Tim Wegner
+ *
+ * The PNG Reference Library is supplied "AS IS". The Contributing
+ * Authors and Group 42, Inc. disclaim all warranties, expressed or
+ * implied, including, without limitation, the warranties of
+ * merchantability and of fitness for any purpose. The Contributing
+ * Authors and Group 42, Inc. assume no liability for direct, indirect,
+ * incidental, special, exemplary, or consequential damages, which may
+ * result from the use of the PNG Reference Library, even if advised of
+ * the possibility of such damage.
*
* Permission is hereby granted to use, copy, modify, and distribute this
* source code, or portions hereof, for any purpose, without fee, subject
* to the following restrictions:
*
- * 1. The origin of this source code must not be misrepresented.
+ * 1. The origin of this source code must not be misrepresented.
*
- * 2. Altered versions must be plainly marked as such and must not
- * be misrepresented as being the original source.
+ * 2. Altered versions must be plainly marked as such and must not
+ * be misrepresented as being the original source.
*
- * 3. This Copyright notice may not be removed or altered from any
- * source or altered source distribution.
+ * 3. This Copyright notice may not be removed or altered from any
+ * source or altered source distribution.
*
- * The Contributing Authors and Group 42, Inc. specifically permit, without
- * fee, and encourage the use of this source code as a component to
- * supporting the PNG file format in commercial products. If you use this
- * source code in a product, acknowledgment is not required but would be
- * appreciated.
+ * The Contributing Authors and Group 42, Inc. specifically permit,
+ * without fee, and encourage the use of this source code as a component
+ * to supporting the PNG file format in commercial products. If you use
+ * this source code in a product, acknowledgment is not required but would
+ * be appreciated.
*
* END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
*
- * TRADEMARK:
+ * TRADEMARK
+ * =========
*
- * The name "libpng" has not been registered by the Copyright owner
+ * The name "libpng" has not been registered by the Copyright owners
* as a trademark in any jurisdiction. However, because libpng has
* been distributed and maintained world-wide, continually since 1995,
- * the Copyright owner claims "common-law trademark protection" in any
+ * the Copyright owners claim "common-law trademark protection" in any
* jurisdiction where common-law trademark is recognized.
- *
- * OSI CERTIFICATION:
- *
- * Libpng is OSI Certified Open Source Software. OSI Certified Open Source is
- * a certification mark of the Open Source Initiative. OSI has not addressed
- * the additional disclaimers inserted at version 1.0.7.
- *
- * EXPORT CONTROL:
- *
- * The Copyright owner believes that the Export Control Classification
- * Number (ECCN) for libpng is EAR99, which means not subject to export
- * controls or International Traffic in Arms Regulations (ITAR) because
- * it is open source, publicly available software, that does not contain
- * any encryption software. See the EAR, paragraphs 734.3(b)(3) and
- * 734.7(b).
*/
/*
@@ -212,91 +231,33 @@
* 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible)
* 1.0.7 1 10007 (still compatible)
* ...
- * 1.0.19 10 10019 10.so.0.19[.0]
+ * 1.0.69 10 10069 10.so.0.69[.0]
+ * ...
+ * 1.2.59 13 10259 12.so.0.59[.0]
* ...
- * 1.2.56 13 10256 12.so.0.56[.0]
+ * 1.4.20 14 10420 14.so.0.20[.0]
* ...
- * 1.5.27 15 10527 15.so.15.27[.0]
+ * 1.5.30 15 10530 15.so.15.30[.0]
* ...
- * 1.6.25 16 10625 16.so.16.25[.0]
- *
- * Henceforth the source version will match the shared-library major
- * and minor numbers; the shared-library major version number will be
- * used for changes in backward compatibility, as it is intended. The
- * PNG_LIBPNG_VER macro, which is not used within libpng but is available
- * for applications, is an unsigned integer of the form xyyzz corresponding
- * to the source version x.y.z (leading zeros in y and z). Beta versions
- * were given the previous public release number plus a letter, until
- * version 1.0.6j; from then on they were given the upcoming public
- * release number plus "betaNN" or "rcNN".
+ * 1.6.43 16 10643 16.so.16.43[.0]
+ *
+ * Henceforth the source version will match the shared-library major and
+ * minor numbers; the shared-library major version number will be used for
+ * changes in backward compatibility, as it is intended.
+ * The PNG_LIBPNG_VER macro, which is not used within libpng but is
+ * available for applications, is an unsigned integer of the form XYYZZ
+ * corresponding to the source version X.Y.Z (leading zeros in Y and Z).
+ * Beta versions were given the previous public release number plus a
+ * letter, until version 1.0.6j; from then on they were given the upcoming
+ * public release number plus "betaNN" or "rcNN".
*
* Binary incompatibility exists only when applications make direct access
* to the info_ptr or png_ptr members through png.h, and the compiled
* application is loaded with a different version of the library.
*
- * DLLNUM will change each time there are forward or backward changes
- * in binary compatibility (e.g., when a new feature is added).
- *
* See libpng.txt or libpng.3 for more information. The PNG specification
- * is available as a W3C Recommendation and as an ISO Specification,
- *
*/
#ifndef PNG_H
@@ -314,21 +275,22 @@
*/
/* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.25"
-#define PNG_HEADER_VERSION_STRING " libpng version 1.6.25 - September 1, 2016\n"
+#define PNG_LIBPNG_VER_STRING "1.6.43"
+#define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
-#define PNG_LIBPNG_VER_SONUM 16
-#define PNG_LIBPNG_VER_DLLNUM 16
+/* The versions of shared library builds should stay in sync, going forward */
+#define PNG_LIBPNG_VER_SHAREDLIB 16
+#define PNG_LIBPNG_VER_SONUM PNG_LIBPNG_VER_SHAREDLIB /* [Deprecated] */
+#define PNG_LIBPNG_VER_DLLNUM PNG_LIBPNG_VER_SHAREDLIB /* [Deprecated] */
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
-#define PNG_LIBPNG_VER_RELEASE 25
+#define PNG_LIBPNG_VER_RELEASE 43
-/* This should match the numeric part of the final component of
- * PNG_LIBPNG_VER_STRING, omitting any leading zero:
+/* This should be zero for a public release, or non-zero for a
+ * development version.
*/
-
#define PNG_LIBPNG_VER_BUILD 0
/* Release Status */
@@ -348,13 +310,14 @@
#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
-/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
- * We must not include leading zeros.
- * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
- * version 1.0.0 was mis-numbered 100 instead of 10000). From
- * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
+/* Careful here. At one time, Guy wanted to use 082, but that
+ * would be octal. We must not include leading zeros.
+ * Versions 0.7 through 1.0.0 were in the range 0 to 100 here
+ * (only version 1.0.0 was mis-numbered 100 instead of 10000).
+ * From version 1.0.1 it is:
+ * XXYYZZ, where XX=major, YY=minor, ZZ=release
*/
-#define PNG_LIBPNG_VER 10625 /* 1.6.25 */
+#define PNG_LIBPNG_VER 10643 /* 1.6.43 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@@ -464,7 +427,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
-typedef char* png_libpng_version_1_6_25;
+typedef char* png_libpng_version_1_6_43;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*
@@ -605,8 +568,8 @@ typedef struct png_text_struct
png_charp key; /* keyword, 1-79 character description of "text" */
png_charp text; /* comment, may be an empty string (ie "")
or a NULL pointer */
- png_size_t text_length; /* length of the text string */
- png_size_t itxt_length; /* length of the itxt string */
+ size_t text_length; /* length of the text string */
+ size_t itxt_length; /* length of the itxt string */
png_charp lang; /* language code, 0-79 characters
or a NULL pointer */
png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
@@ -659,7 +622,7 @@ typedef struct png_unknown_chunk_t
{
png_byte name[5]; /* Textual chunk name with '\0' terminator */
png_byte *data; /* Data, should not be modified on read! */
- png_size_t size;
+ size_t size;
/* On write 'location' must be set using the flag values listed below.
* Notice that on read it is set by libpng however the values stored have
@@ -684,7 +647,7 @@ typedef png_unknown_chunk * * png_unknown_chunkpp;
/* Maximum positive integer used in PNG is (2^31)-1 */
#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
#define PNG_UINT_32_MAX ((png_uint_32)(-1))
-#define PNG_SIZE_MAX ((png_size_t)(-1))
+#define PNG_SIZE_MAX ((size_t)(-1))
/* These are constants for fixed point values encoded in the
* PNG specification manner (x100000)
@@ -781,6 +744,7 @@ typedef png_unknown_chunk * * png_unknown_chunkpp;
#define PNG_INFO_sPLT 0x2000U /* ESR, 1.0.6 */
#define PNG_INFO_sCAL 0x4000U /* ESR, 1.0.6 */
#define PNG_INFO_IDAT 0x8000U /* ESR, 1.0.6 */
+#define PNG_INFO_eXIf 0x10000U /* GR-P, 1.6.31 */
/* This is used for the transformation routines, as some of them
* change these values for the row. It also should enable using
@@ -789,7 +753,7 @@ typedef png_unknown_chunk * * png_unknown_chunkpp;
typedef struct png_row_info_struct
{
png_uint_32 width; /* width of row */
- png_size_t rowbytes; /* number of bytes in row */
+ size_t rowbytes; /* number of bytes in row */
png_byte color_type; /* color type of row */
png_byte bit_depth; /* bit depth of row */
png_byte channels; /* number of channels (1, 2, 3, or 4) */
@@ -808,7 +772,7 @@ typedef png_row_info * * png_row_infopp;
* expected to return the read data in the buffer.
*/
typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp));
-typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, png_size_t));
+typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, size_t));
typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp));
typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32,
int));
@@ -884,7 +848,7 @@ PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef);
#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
/* Added to libpng-1.5.4 */
#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
-#if INT_MAX >= 0x8000 /* else this might break */
+#if ~0U > 0xffffU /* or else this might break on a 16-bit machine */
#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */
#endif
@@ -943,15 +907,15 @@ PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes));
/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
* PNG file. Returns zero if the supplied bytes match the 8-byte PNG
* signature, and non-zero otherwise. Having num_to_check == 0 or
- * start > 7 will always fail (ie return non-zero).
+ * start > 7 will always fail (i.e. return non-zero).
*/
-PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, png_size_t start,
- png_size_t num_to_check));
+PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, size_t start,
+ size_t num_to_check));
/* Simple signature checking function. This is the same as calling
- * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
+ * png_check_sig(sig, n) := (png_sig_cmp(sig, 0, n) == 0).
*/
-#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
+#define png_check_sig(sig, n) (png_sig_cmp((sig), 0, (n)) == 0) /* DEPRECATED */
/* Allocate and initialize png_ptr struct for reading, and any other memory. */
PNG_EXPORTA(4, png_structp, png_create_read_struct,
@@ -965,11 +929,11 @@ PNG_EXPORTA(5, png_structp, png_create_write_struct,
png_error_ptr warn_fn),
PNG_ALLOCATED);
-PNG_EXPORT(6, png_size_t, png_get_compression_buffer_size,
+PNG_EXPORT(6, size_t, png_get_compression_buffer_size,
(png_const_structrp png_ptr));
PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structrp png_ptr,
- png_size_t size));
+ size_t size));
/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
* match up.
@@ -1022,7 +986,7 @@ PNG_EXPORT(13, void, png_write_sig, (png_structrp png_ptr));
/* Write a PNG chunk - size, type, (optional) data, CRC. */
PNG_EXPORT(14, void, png_write_chunk, (png_structrp png_ptr, png_const_bytep
- chunk_name, png_const_bytep data, png_size_t length));
+ chunk_name, png_const_bytep data, size_t length));
/* Write the start of a PNG chunk - length and chunk name. */
PNG_EXPORT(15, void, png_write_chunk_start, (png_structrp png_ptr,
@@ -1030,7 +994,7 @@ PNG_EXPORT(15, void, png_write_chunk_start, (png_structrp png_ptr,
/* Write the data of a PNG chunk started with png_write_chunk_start(). */
PNG_EXPORT(16, void, png_write_chunk_data, (png_structrp png_ptr,
- png_const_bytep data, png_size_t length));
+ png_const_bytep data, size_t length));
/* Finish a chunk started with png_write_chunk_start() (includes CRC). */
PNG_EXPORT(17, void, png_write_chunk_end, (png_structrp png_ptr));
@@ -1044,7 +1008,7 @@ PNG_EXPORTA(18, png_infop, png_create_info_struct, (png_const_structrp png_ptr),
* the API will be removed in the future.
*/
PNG_EXPORTA(19, void, png_info_init_3, (png_infopp info_ptr,
- png_size_t png_info_struct_size), PNG_DEPRECATED);
+ size_t png_info_struct_size), PNG_DEPRECATED);
/* Writes all the PNG information before the image. */
PNG_EXPORT(20, void, png_write_info_before_PLTE,
@@ -1141,7 +1105,7 @@ PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth,
* corresponding composited pixel, and the color channels are unassociated
* (not premultiplied). The gamma encoded color channels must be scaled
* according to the contribution and to do this it is necessary to undo
- * the encoding, scale the color values, perform the composition and reencode
+ * the encoding, scale the color values, perform the composition and re-encode
* the values. This is the 'PNG' mode.
*
* The alternative is to 'associate' the alpha with the color information by
@@ -1197,7 +1161,7 @@ PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr,
*
* png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
* In this case the output is assumed to be something like an sRGB conformant
- * display preceeded by a power-law lookup table of power 1.45. This is how
+ * display preceded by a power-law lookup table of power 1.45. This is how
* early Mac systems behaved.
*
* png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_GAMMA_LINEAR);
@@ -1244,7 +1208,7 @@ PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr,
*
* When the default gamma of PNG files doesn't match the output gamma.
* If you have PNG files with no gamma information png_set_alpha_mode allows
- * you to provide a default gamma, but it also sets the ouput gamma to the
+ * you to provide a default gamma, but it also sets the output gamma to the
* matching value. If you know your PNG files have a gamma that doesn't
* match the output you can take advantage of the fact that
* png_set_alpha_mode always sets the output gamma but only sets the PNG
@@ -1481,7 +1445,7 @@ PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action,
* mainly useful for testing, as the defaults should work with most users.
* Those users who are tight on memory or want faster performance at the
* expense of compression can modify them. See the compression library
- * header file (zlib.h) for an explination of the compression functions.
+ * header file (zlib.h) for an explanation of the compression functions.
*/
/* Set the filtering method(s) used by libpng. Currently, the only valid
@@ -1536,7 +1500,7 @@ PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
* 0 - 9, corresponding directly to the zlib compression levels 0 - 9
* (0 - no compression, 9 - "maximal" compression). Note that tests have
* shown that zlib compression levels 3-6 usually perform as well as level 9
- * for PNG images, and do considerably fewer caclulations. In the future,
+ * for PNG images, and do considerably fewer calculations. In the future,
* these values may not correspond directly to the zlib compression levels.
*/
#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
@@ -1695,7 +1659,7 @@ PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structrp));
* chunk will cause an error at this point unless it is to be saved.
* positive: The chunk was handled, libpng will ignore/discard it.
*
- * See "INTERACTION WTIH USER CHUNK CALLBACKS" below for important notes about
+ * See "INTERACTION WITH USER CHUNK CALLBACKS" below for important notes about
* how this behavior will change in libpng 1.7
*/
PNG_EXPORT(88, void, png_set_read_user_chunk_fn, (png_structrp png_ptr,
@@ -1720,7 +1684,7 @@ PNG_EXPORT(91, png_voidp, png_get_progressive_ptr,
/* Function to be called when data becomes available */
PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr,
- png_inforp info_ptr, png_bytep buffer, png_size_t buffer_size));
+ png_inforp info_ptr, png_bytep buffer, size_t buffer_size));
/* A function which may be called *only* within png_process_data to stop the
* processing of any more data. The function returns the number of bytes
@@ -1729,7 +1693,7 @@ PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr,
* 'save' is set to true the routine will first save all the pending data and
* will always return 0.
*/
-PNG_EXPORT(219, png_size_t, png_process_data_pause, (png_structrp, int save));
+PNG_EXPORT(219, size_t, png_process_data_pause, (png_structrp, int save));
/* A function which may be called *only* outside (after) a call to
* png_process_data. It returns the number of bytes of data to skip in the
@@ -1765,12 +1729,9 @@ PNG_EXPORT(97, void, png_free, (png_const_structrp png_ptr, png_voidp ptr));
PNG_EXPORT(98, void, png_free_data, (png_const_structrp png_ptr,
png_inforp info_ptr, png_uint_32 free_me, int num));
-/* Reassign responsibility for freeing existing data, whether allocated
+/* Reassign the responsibility for freeing existing data, whether allocated
* by libpng or by the application; this works on the png_info structure passed
- * in, it does not change the state for other png_info structures.
- *
- * It is unlikely that this function works correctly as of 1.6.0 and using it
- * may result either in memory leaks or double free of allocated data.
+ * in, without changing the state for other png_info structures.
*/
PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr,
png_inforp info_ptr, int freer, png_uint_32 mask));
@@ -1793,7 +1754,8 @@ PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr,
#define PNG_FREE_PLTE 0x1000U
#define PNG_FREE_TRNS 0x2000U
#define PNG_FREE_TEXT 0x4000U
-#define PNG_FREE_ALL 0x7fffU
+#define PNG_FREE_EXIF 0x8000U /* Added at libpng-1.6.31 */
+#define PNG_FREE_ALL 0xffffU
#define PNG_FREE_MUL 0x4220U /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
#ifdef PNG_USER_MEM_SUPPORTED
@@ -1873,7 +1835,7 @@ PNG_EXPORT(110, png_uint_32, png_get_valid, (png_const_structrp png_ptr,
png_const_inforp info_ptr, png_uint_32 flag));
/* Returns number of bytes needed to hold a transformed row. */
-PNG_EXPORT(111, png_size_t, png_get_rowbytes, (png_const_structrp png_ptr,
+PNG_EXPORT(111, size_t, png_get_rowbytes, (png_const_structrp png_ptr,
png_const_inforp info_ptr));
#ifdef PNG_INFO_IMAGE_SUPPORTED
@@ -2012,6 +1974,18 @@ PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr,
png_fixed_point int_blue_Z))
#endif
+#ifdef PNG_eXIf_SUPPORTED
+PNG_EXPORT(246, png_uint_32, png_get_eXIf, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_bytep *exif));
+PNG_EXPORT(247, void, png_set_eXIf, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_bytep exif));
+
+PNG_EXPORT(248, png_uint_32, png_get_eXIf_1, (png_const_structrp png_ptr,
+ png_const_inforp info_ptr, png_uint_32 *num_exif, png_bytep *exif));
+PNG_EXPORT(249, void, png_set_eXIf_1, (png_const_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 num_exif, png_bytep exif));
+#endif
+
#ifdef PNG_gAMA_SUPPORTED
PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA, (png_const_structrp png_ptr,
png_const_inforp info_ptr, double *file_gamma))
@@ -2030,9 +2004,6 @@ PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_const_structrp png_ptr,
#ifdef PNG_hIST_SUPPORTED
PNG_EXPORT(141, png_uint_32, png_get_hIST, (png_const_structrp png_ptr,
png_inforp info_ptr, png_uint_16p *hist));
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr,
png_inforp info_ptr, png_const_uint_16p hist));
#endif
@@ -2233,7 +2204,7 @@ PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr,
* to specifying "NEVER", however when "AS_DEFAULT" is used for specific chunks
* it simply resets the behavior to the libpng default.
*
- * INTERACTION WTIH USER CHUNK CALLBACKS:
+ * INTERACTION WITH USER CHUNK CALLBACKS:
* The per-chunk handling is always used when there is a png_user_chunk_ptr
* callback and the callback returns 0; the chunk is then always stored *unless*
* it is critical and the per-chunk setting is other than ALWAYS. Notice that
@@ -2652,7 +2623,7 @@ PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr,
* The simplified API hides the details of both libpng and the PNG file format
* itself. It allows PNG files to be read into a very limited number of
* in-memory bitmap formats or to be written from the same formats. If these
- * formats do not accomodate your needs then you can, and should, use the more
+ * formats do not accommodate your needs then you can, and should, use the more
* sophisticated APIs above - these support a wide variety of in-memory formats
* and a wide variety of sophisticated transformations to those formats as well
* as a wide variety of APIs to manipulate ancillary information.
@@ -2758,7 +2729,7 @@ typedef struct
*
* When the simplified API needs to convert between sRGB and linear colorspaces,
* the actual sRGB transfer curve defined in the sRGB specification (see the
- * article at http://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2
+ * article at ) is used, not the gamma=1/2.2
* approximation used elsewhere in libpng.
*
* When an alpha channel is present it is expected to denote pixel coverage
@@ -2813,6 +2784,8 @@ typedef struct
# define PNG_FORMAT_FLAG_AFIRST 0x20U /* alpha channel comes first */
#endif
+#define PNG_FORMAT_FLAG_ASSOCIATED_ALPHA 0x40U /* alpha channel is associated */
+
/* Commonly used formats have predefined macros.
*
* First the single byte (sRGB) formats:
@@ -2959,7 +2932,7 @@ typedef struct
* 'flags' field of png_image.
*/
#define PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB 0x01
- /* This indicates the the RGB values of the in-memory bitmap do not
+ /* This indicates that the RGB values of the in-memory bitmap do not
* correspond to the red, green and blue end-points defined by sRGB.
*/
@@ -3012,7 +2985,7 @@ PNG_EXPORT(235, int, png_image_begin_read_from_stdio, (png_imagep image,
#endif /* STDIO */
PNG_EXPORT(236, int, png_image_begin_read_from_memory, (png_imagep image,
- png_const_voidp memory, png_size_t size));
+ png_const_voidp memory, size_t size));
/* The PNG header is read from the given memory buffer. */
PNG_EXPORT(237, int, png_image_finish_read, (png_imagep image,
@@ -3125,7 +3098,7 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
* than or equal to the original value.
*
* If the function returns false and *memory_bytes was not changed an error
- * occured during write. If *memory_bytes was changed, or is not 0 if
+ * occurred during write. If *memory_bytes was changed, or is not 0 if
* 'memory' was NULL, the write would have succeeded but for the memory
* buffer being too small. *memory_bytes contains the required number of
* bytes and will be bigger that the original value.
@@ -3209,7 +3182,7 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
* option and 'onoff' is 0 (off) or non-0 (on). The value returned is given
* by the PNG_OPTION_ defines below.
*
- * HARDWARE: normally hardware capabilites, such as the Intel SSE instructions,
+ * HARDWARE: normally hardware capabilities, such as the Intel SSE instructions,
* are detected at run time, however sometimes it may be impossible
* to do this in user mode, in which case it is necessary to discover
* the capabilities in an OS specific way. Such capabilities are
@@ -3230,7 +3203,18 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
#ifdef PNG_MIPS_MSA_API_SUPPORTED
# define PNG_MIPS_MSA 6 /* HARDWARE: MIPS Msa SIMD instructions supported */
#endif
-#define PNG_OPTION_NEXT 8 /* Next option - numbers must be even */
+#ifdef PNG_DISABLE_ADLER32_CHECK_SUPPORTED
+# define PNG_IGNORE_ADLER32 8 /* SOFTWARE: disable Adler32 check on IDAT */
+#endif
+#ifdef PNG_POWERPC_VSX_API_SUPPORTED
+# define PNG_POWERPC_VSX 10 /* HARDWARE: PowerPC VSX SIMD instructions
+ * supported */
+#endif
+#ifdef PNG_MIPS_MMI_API_SUPPORTED
+# define PNG_MIPS_MMI 12 /* HARDWARE: MIPS MMI SIMD instructions supported */
+#endif
+
+#define PNG_OPTION_NEXT 14 /* Next option - numbers must be even */
/* Return values: NOTE: there are four values and 'off' is *not* zero */
#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */
@@ -3254,7 +3238,7 @@ PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
* one to use is one more than this.)
*/
#ifdef PNG_EXPORT_LAST_ORDINAL
- PNG_EXPORT_LAST_ORDINAL(245);
+ PNG_EXPORT_LAST_ORDINAL(249);
#endif
#ifdef __cplusplus
diff --git a/thirdparty/libpng/pngconf.h b/thirdparty/libpng/pngconf.h
index 08b423966..000d7b1a8 100644
--- a/thirdparty/libpng/pngconf.h
+++ b/thirdparty/libpng/pngconf.h
@@ -1,11 +1,12 @@
-/* pngconf.h - machine configurable file for libpng
+/* pngconf.h - machine-configurable file for libpng
*
- * libpng version 1.6.25, September 1, 2016
+ * libpng version 1.6.43
*
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -57,14 +58,13 @@
#endif /* PNG_BUILDING_SYMBOL_TABLE */
-/* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
- * PNG_NO_CONST; this is no longer supported except for data declarations which
- * apparently still cause problems in 2011 on some compilers.
+/* Prior to 1.6.0, it was possible to turn off 'const' in declarations,
+ * using PNG_NO_CONST. This is no longer supported.
*/
#define PNG_CONST const /* backward compatibility only */
-/* This controls optimization of the reading of 16-bit and 32-bit values
- * from PNG files. It can be set on a per-app-file basis - it
+/* This controls optimization of the reading of 16-bit and 32-bit
+ * values from PNG files. It can be set on a per-app-file basis: it
* just changes whether a macro is used when the function is called.
* The library builder sets the default; if read functions are not
* built into the library the macro implementation is forced on.
@@ -127,7 +127,7 @@
*
* These cases only differ if the operating system does not use the C
* calling convention, at present this just means the above cases
- * (x86 DOS/Windows sytems) and, even then, this does not apply to
+ * (x86 DOS/Windows systems) and, even then, this does not apply to
* Cygwin running on those systems.
*
* Note that the value must be defined in pnglibconf.h so that what
@@ -180,8 +180,8 @@
* compiler-specific macros to the values required to change the calling
* conventions of the various functions.
*/
-#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
- defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+#if defined(_WIN32) || defined(__WIN32__) || defined(__NT__) || \
+ defined(__CYGWIN__)
/* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or
* MinGW on any architecture currently supported by Windows. Also includes
* Watcom builds but these need special treatment because they are not
@@ -507,16 +507,18 @@
# error "libpng requires a signed 32-bit (or more) type"
#endif
-#if UINT_MAX > 4294967294
+#if UINT_MAX > 4294967294U
typedef unsigned int png_uint_32;
-#elif ULONG_MAX > 4294967294
+#elif ULONG_MAX > 4294967294U
typedef unsigned long int png_uint_32;
#else
# error "libpng requires an unsigned 32-bit (or more) type"
#endif
-/* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
- * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
+/* Prior to 1.6.0, it was possible to disable the use of size_t and ptrdiff_t.
+ * From 1.6.0 onwards, an ISO C90 compiler, as well as a standard-compliant
+ * behavior of sizeof and ptrdiff_t are required.
+ * The legacy typedefs are provided here for backwards compatibility.
*/
typedef size_t png_size_t;
typedef ptrdiff_t png_ptrdiff_t;
@@ -537,13 +539,12 @@ typedef ptrdiff_t png_ptrdiff_t;
# endif
#endif
-/* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
- * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to
- * png_alloc_size_t are not necessary; in fact, it is recommended not to use
- * them at all so that the compiler can complain when something turns out to be
- * problematic.
+/* png_alloc_size_t is guaranteed to be no smaller than size_t, and no smaller
+ * than png_uint_32. Casts from size_t or png_uint_32 to png_alloc_size_t are
+ * not necessary; in fact, it is recommended not to use them at all, so that
+ * the compiler can complain when something turns out to be problematic.
*
- * Casts in the other direction (from png_alloc_size_t to png_size_t or
+ * Casts in the other direction (from png_alloc_size_t to size_t or
* png_uint_32) should be explicitly applied; however, we do not expect to
* encounter practical situations that require such conversions.
*
@@ -553,7 +554,7 @@ typedef ptrdiff_t png_ptrdiff_t;
#ifdef PNG_SMALL_SIZE_T
typedef png_uint_32 png_alloc_size_t;
#else
- typedef png_size_t png_alloc_size_t;
+ typedef size_t png_alloc_size_t;
#endif
/* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
@@ -589,8 +590,8 @@ typedef char * png_charp;
typedef const char * png_const_charp;
typedef png_fixed_point * png_fixed_point_p;
typedef const png_fixed_point * png_const_fixed_point_p;
-typedef png_size_t * png_size_tp;
-typedef const png_size_t * png_const_size_tp;
+typedef size_t * png_size_tp;
+typedef const size_t * png_const_size_tp;
#ifdef PNG_STDIO_SUPPORTED
typedef FILE * png_FILE_p;
diff --git a/thirdparty/libpng/pngdebug.h b/thirdparty/libpng/pngdebug.h
index 15a7ed0c9..00d5a4569 100644
--- a/thirdparty/libpng/pngdebug.h
+++ b/thirdparty/libpng/pngdebug.h
@@ -1,10 +1,10 @@
/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
*
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Copyright (c) 2018 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
diff --git a/thirdparty/libpng/pngerror.c b/thirdparty/libpng/pngerror.c
index f13b76443..29ebda794 100644
--- a/thirdparty/libpng/pngerror.c
+++ b/thirdparty/libpng/pngerror.c
@@ -1,10 +1,10 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -163,7 +163,7 @@ png_format_number(png_const_charp start, png_charp end, int format,
case PNG_NUMBER_FORMAT_02u:
/* Expects at least 2 digits. */
mincount = 2;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case PNG_NUMBER_FORMAT_u:
*--end = digits[number % 10];
@@ -173,7 +173,7 @@ png_format_number(png_const_charp start, png_charp end, int format,
case PNG_NUMBER_FORMAT_02x:
/* This format expects at least two digits */
mincount = 2;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case PNG_NUMBER_FORMAT_x:
*--end = digits[number & 0xf];
@@ -255,7 +255,7 @@ void
png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
png_alloc_size_t value)
{
- char buffer[PNG_NUMBER_BUFFER_SIZE];
+ char buffer[PNG_NUMBER_BUFFER_SIZE] = {0};
png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
}
@@ -265,7 +265,7 @@ png_warning_parameter_signed(png_warning_parameters p, int number, int format,
{
png_alloc_size_t u;
png_charp str;
- char buffer[PNG_NUMBER_BUFFER_SIZE];
+ char buffer[PNG_NUMBER_BUFFER_SIZE] = {0};
/* Avoid overflow by doing the negate in a png_alloc_size_t: */
u = (png_alloc_size_t)value;
@@ -425,7 +425,7 @@ png_app_error(png_const_structrp png_ptr, png_const_charp error_message)
* if the character is invalid.
*/
#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
-static PNG_CONST char png_digit[16] = {
+static const char png_digit[16] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F'
};
@@ -573,7 +573,7 @@ png_fixed_error,(png_const_structrp png_ptr, png_const_charp name),PNG_NORETURN)
{
# define fixed_message "fixed point overflow in "
# define fixed_message_ln ((sizeof fixed_message)-1)
- int iin;
+ unsigned int iin;
char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
memcpy(msg, fixed_message, fixed_message_ln);
iin = 0;
@@ -858,7 +858,7 @@ png_get_error_ptr(png_const_structrp png_ptr)
if (png_ptr == NULL)
return NULL;
- return ((png_voidp)png_ptr->error_ptr);
+ return (png_voidp)png_ptr->error_ptr;
}
@@ -885,7 +885,7 @@ PNG_FUNCTION(void /* PRIVATE */, (PNGCBAPI
png_safe_error),(png_structp png_nonconst_ptr, png_const_charp error_message),
PNG_NORETURN)
{
- const png_const_structrp png_ptr = png_nonconst_ptr;
+ png_const_structrp png_ptr = png_nonconst_ptr;
png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
/* An error is always logged here, overwriting anything (typically a warning)
@@ -920,7 +920,7 @@ png_safe_error),(png_structp png_nonconst_ptr, png_const_charp error_message),
void /* PRIVATE */ PNGCBAPI
png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message)
{
- const png_const_structrp png_ptr = png_nonconst_ptr;
+ png_const_structrp png_ptr = png_nonconst_ptr;
png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
/* A warning is only logged if there is no prior warning or error. */
@@ -933,31 +933,25 @@ png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message)
#endif
int /* PRIVATE */
-png_safe_execute(png_imagep image_in, int (*function)(png_voidp), png_voidp arg)
+png_safe_execute(png_imagep image, int (*function)(png_voidp), png_voidp arg)
{
- volatile png_imagep image = image_in;
- volatile int result;
- volatile png_voidp saved_error_buf;
+ png_voidp saved_error_buf = image->opaque->error_buf;
jmp_buf safe_jmpbuf;
+ int result;
- /* Safely execute function(arg) with png_error returning to this function. */
- saved_error_buf = image->opaque->error_buf;
- result = setjmp(safe_jmpbuf) == 0;
-
- if (result != 0)
+ /* Safely execute function(arg), with png_error returning back here. */
+ if (setjmp(safe_jmpbuf) == 0)
{
-
image->opaque->error_buf = safe_jmpbuf;
result = function(arg);
+ image->opaque->error_buf = saved_error_buf;
+ return result;
}
+ /* On png_error, return via longjmp, pop the jmpbuf, and free the image. */
image->opaque->error_buf = saved_error_buf;
-
- /* And do the cleanup prior to any failure return. */
- if (result == 0)
- png_image_free(image);
-
- return result;
+ png_image_free(image);
+ return 0;
}
#endif /* SIMPLIFIED READ || SIMPLIFIED_WRITE */
#endif /* READ || WRITE */
diff --git a/thirdparty/libpng/pngget.c b/thirdparty/libpng/pngget.c
index b3c6863f4..1084b268f 100644
--- a/thirdparty/libpng/pngget.c
+++ b/thirdparty/libpng/pngget.c
@@ -1,10 +1,10 @@
/* pngget.c - retrieval of values from info struct
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -21,18 +21,29 @@ png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 flag)
{
if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->valid & flag);
+ {
+#ifdef PNG_READ_tRNS_SUPPORTED
+ /* png_handle_PLTE() may have canceled a valid tRNS chunk but left the
+ * 'valid' flag for the detection of duplicate chunks. Do not report a
+ * valid tRNS chunk in this case.
+ */
+ if (flag == PNG_INFO_tRNS && png_ptr->num_trans == 0)
+ return 0;
+#endif
- return(0);
+ return info_ptr->valid & flag;
+ }
+
+ return 0;
}
-png_size_t PNGAPI
+size_t PNGAPI
png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->rowbytes);
+ return info_ptr->rowbytes;
- return(0);
+ return 0;
}
#ifdef PNG_INFO_IMAGE_SUPPORTED
@@ -40,9 +51,9 @@ png_bytepp PNGAPI
png_get_rows(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->row_pointers);
+ return info_ptr->row_pointers;
- return(0);
+ return 0;
}
#endif
@@ -54,7 +65,7 @@ png_get_image_width(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->width;
- return (0);
+ return 0;
}
png_uint_32 PNGAPI
@@ -63,7 +74,7 @@ png_get_image_height(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->height;
- return (0);
+ return 0;
}
png_byte PNGAPI
@@ -72,7 +83,7 @@ png_get_bit_depth(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->bit_depth;
- return (0);
+ return 0;
}
png_byte PNGAPI
@@ -81,7 +92,7 @@ png_get_color_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->color_type;
- return (0);
+ return 0;
}
png_byte PNGAPI
@@ -90,7 +101,7 @@ png_get_filter_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->filter_type;
- return (0);
+ return 0;
}
png_byte PNGAPI
@@ -99,7 +110,7 @@ png_get_interlace_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->interlace_type;
- return (0);
+ return 0;
}
png_byte PNGAPI
@@ -108,7 +119,7 @@ png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->compression_type;
- return (0);
+ return 0;
}
png_uint_32 PNGAPI
@@ -116,21 +127,20 @@ png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
+ png_debug(1, "in png_get_x_pixels_per_meter");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
- {
- png_debug1(1, "in %s retrieval function",
- "png_get_x_pixels_per_meter");
-
- if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
- return (info_ptr->x_pixels_per_unit);
- }
+ {
+ if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
+ return info_ptr->x_pixels_per_unit;
+ }
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
png_uint_32 PNGAPI
@@ -138,42 +148,41 @@ png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
+ png_debug(1, "in png_get_y_pixels_per_meter");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
- png_debug1(1, "in %s retrieval function",
- "png_get_y_pixels_per_meter");
-
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
- return (info_ptr->y_pixels_per_unit);
+ return info_ptr->y_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
png_uint_32 PNGAPI
png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
+ png_debug(1, "in png_get_pixels_per_meter");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
- png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
-
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
- return (info_ptr->x_pixels_per_unit);
+ return info_ptr->x_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
#ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -182,21 +191,21 @@ png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp
info_ptr)
{
#ifdef PNG_READ_pHYs_SUPPORTED
+ png_debug(1, "in png_get_pixel_aspect_ratio");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
- png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
-
if (info_ptr->x_pixels_per_unit != 0)
- return ((float)((float)info_ptr->y_pixels_per_unit
- /(float)info_ptr->x_pixels_per_unit));
+ return (float)info_ptr->y_pixels_per_unit
+ / (float)info_ptr->x_pixels_per_unit;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return ((float)0.0);
+ return (float)0.0;
}
#endif
@@ -206,6 +215,8 @@ png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
png_const_inforp info_ptr)
{
#ifdef PNG_READ_pHYs_SUPPORTED
+ png_debug(1, "in png_get_pixel_aspect_ratio_fixed");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0 &&
info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0 &&
@@ -214,8 +225,6 @@ png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
{
png_fixed_point res;
- png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
-
/* The following casts work because a PNG 4 byte integer only has a valid
* range of 0..2^31-1; otherwise the cast might overflow.
*/
@@ -236,80 +245,80 @@ png_int_32 PNGAPI
png_get_x_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
+ png_debug(1, "in png_get_x_offset_microns");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
- png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
-
if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
- return (info_ptr->x_offset);
+ return info_ptr->x_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
png_int_32 PNGAPI
png_get_y_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
+ png_debug(1, "in png_get_y_offset_microns");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
- png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
-
if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
- return (info_ptr->y_offset);
+ return info_ptr->y_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
png_int_32 PNGAPI
png_get_x_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
+ png_debug(1, "in png_get_x_offset_pixels");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
- png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
-
if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
- return (info_ptr->x_offset);
+ return info_ptr->x_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
png_int_32 PNGAPI
png_get_y_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
+ png_debug(1, "in png_get_y_offset_pixels");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_oFFs) != 0)
{
- png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
-
if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
- return (info_ptr->y_offset);
+ return info_ptr->y_offset;
}
#else
PNG_UNUSED(png_ptr)
PNG_UNUSED(info_ptr)
#endif
- return (0);
+ return 0;
}
#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
@@ -338,7 +347,7 @@ ppi_from_ppm(png_uint_32 ppm)
png_fixed_point result;
if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
5000) != 0)
- return result;
+ return (png_uint_32)result;
/* Overflow. */
return 0;
@@ -367,7 +376,7 @@ png_get_y_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
static png_fixed_point
png_fixed_inches_from_microns(png_const_structrp png_ptr, png_int_32 microns)
{
- /* Convert from metres * 1,000,000 to inches * 100,000, meters to
+ /* Convert from meters * 1,000,000 to inches * 100,000, meters to
* inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
* Notice that this can overflow - a warning is output and 0 is
* returned.
@@ -423,11 +432,11 @@ png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
{
png_uint_32 retval = 0;
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs) != 0)
{
- png_debug1(1, "in %s retrieval function", "pHYs");
-
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
@@ -453,7 +462,7 @@ png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
}
}
- return (retval);
+ return retval;
}
#endif /* pHYs */
#endif /* INCH_CONVERSIONS */
@@ -467,9 +476,9 @@ png_byte PNGAPI
png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->channels);
+ return info_ptr->channels;
- return (0);
+ return 0;
}
#ifdef PNG_READ_SUPPORTED
@@ -477,9 +486,9 @@ png_const_bytep PNGAPI
png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->signature);
+ return info_ptr->signature;
- return (NULL);
+ return NULL;
}
#endif
@@ -488,17 +497,17 @@ png_uint_32 PNGAPI
png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
png_color_16p *background)
{
+ png_debug1(1, "in %s retrieval function", "bKGD");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_bKGD) != 0 &&
background != NULL)
{
- png_debug1(1, "in %s retrieval function", "bKGD");
-
*background = &(info_ptr->background);
- return (PNG_INFO_bKGD);
+ return PNG_INFO_bKGD;
}
- return (0);
+ return 0;
}
#endif
@@ -513,6 +522,8 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *white_x, double *white_y, double *red_x, double *red_y,
double *green_x, double *green_y, double *blue_x, double *blue_y)
{
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
/* Quiet API change: this code used to only return the end points if a cHRM
* chunk was present, but the end points can also come from iCCP or sRGB
* chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
@@ -522,8 +533,6 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
- png_debug1(1, "in %s retrieval function", "cHRM");
-
if (white_x != NULL)
*white_x = png_float(png_ptr,
info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
@@ -548,10 +557,10 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (blue_y != NULL)
*blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
"cHRM blue Y");
- return (PNG_INFO_cHRM);
+ return PNG_INFO_cHRM;
}
- return (0);
+ return 0;
}
png_uint_32 PNGAPI
@@ -560,11 +569,11 @@ png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
double *blue_Z)
{
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
- png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
-
if (red_X != NULL)
*red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
"cHRM red X");
@@ -592,10 +601,10 @@ png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (blue_Z != NULL)
*blue_Z = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
- return (PNG_INFO_cHRM);
+ return PNG_INFO_cHRM;
}
- return (0);
+ return 0;
}
# endif
@@ -608,11 +617,11 @@ png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
png_fixed_point *int_blue_Z)
{
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
- png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
-
if (int_red_X != NULL)
*int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
if (int_red_Y != NULL)
@@ -631,10 +640,10 @@ png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
if (int_blue_Z != NULL)
*int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
- return (PNG_INFO_cHRM);
+ return PNG_INFO_cHRM;
}
- return (0);
+ return 0;
}
png_uint_32 PNGAPI
@@ -664,10 +673,10 @@ png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*blue_x = info_ptr->colorspace.end_points_xy.bluex;
if (blue_y != NULL)
*blue_y = info_ptr->colorspace.end_points_xy.bluey;
- return (PNG_INFO_cHRM);
+ return PNG_INFO_cHRM;
}
- return (0);
+ return 0;
}
# endif
#endif
@@ -685,10 +694,10 @@ png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
file_gamma != NULL)
{
*file_gamma = info_ptr->colorspace.gamma;
- return (PNG_INFO_gAMA);
+ return PNG_INFO_gAMA;
}
- return (0);
+ return 0;
}
# endif
@@ -705,10 +714,10 @@ png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr,
{
*file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
"png_get_gAMA");
- return (PNG_INFO_gAMA);
+ return PNG_INFO_gAMA;
}
- return (0);
+ return 0;
}
# endif
#endif
@@ -724,10 +733,10 @@ png_get_sRGB(png_const_structrp png_ptr, png_const_inforp info_ptr,
(info_ptr->valid & PNG_INFO_sRGB) != 0 && file_srgb_intent != NULL)
{
*file_srgb_intent = info_ptr->colorspace.rendering_intent;
- return (PNG_INFO_sRGB);
+ return PNG_INFO_sRGB;
}
- return (0);
+ return 0;
}
#endif
@@ -741,8 +750,7 @@ png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_iCCP) != 0 &&
- name != NULL && compression_type != NULL && profile != NULL &&
- proflen != NULL)
+ name != NULL && profile != NULL && proflen != NULL)
{
*name = info_ptr->iccp_name;
*profile = info_ptr->iccp_profile;
@@ -750,11 +758,13 @@ png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
/* This is somewhat irrelevant since the profile data returned has
* actually been uncompressed.
*/
- *compression_type = PNG_COMPRESSION_TYPE_BASE;
- return (PNG_INFO_iCCP);
+ if (compression_type != NULL)
+ *compression_type = PNG_COMPRESSION_TYPE_BASE;
+ return PNG_INFO_iCCP;
}
- return (0);
+ return 0;
+
}
#endif
@@ -763,13 +773,44 @@ int PNGAPI
png_get_sPLT(png_const_structrp png_ptr, png_inforp info_ptr,
png_sPLT_tpp spalettes)
{
+ png_debug1(1, "in %s retrieval function", "sPLT");
+
if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
{
*spalettes = info_ptr->splt_palettes;
return info_ptr->splt_palettes_num;
}
- return (0);
+ return 0;
+}
+#endif
+
+#ifdef PNG_eXIf_SUPPORTED
+png_uint_32 PNGAPI
+png_get_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_bytep *exif)
+{
+ png_warning(png_ptr, "png_get_eXIf does not work; use png_get_eXIf_1");
+ PNG_UNUSED(info_ptr)
+ PNG_UNUSED(exif)
+ return 0;
+}
+
+png_uint_32 PNGAPI
+png_get_eXIf_1(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_uint_32 *num_exif, png_bytep *exif)
+{
+ png_debug1(1, "in %s retrieval function", "eXIf");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_eXIf) != 0 && exif != NULL)
+ {
+ *num_exif = info_ptr->num_exif;
+ *exif = info_ptr->exif;
+ return PNG_INFO_eXIf;
+ }
+
+ return 0;
}
#endif
@@ -784,10 +825,10 @@ png_get_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
(info_ptr->valid & PNG_INFO_hIST) != 0 && hist != NULL)
{
*hist = info_ptr->hist;
- return (PNG_INFO_hIST);
+ return PNG_INFO_hIST;
}
- return (0);
+ return 0;
}
#endif
@@ -800,7 +841,7 @@ png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_debug1(1, "in %s retrieval function", "IHDR");
if (png_ptr == NULL || info_ptr == NULL)
- return (0);
+ return 0;
if (width != NULL)
*width = info_ptr->width;
@@ -832,7 +873,7 @@ png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
info_ptr->compression_type, info_ptr->filter_type);
- return (1);
+ return 1;
}
#ifdef PNG_oFFs_SUPPORTED
@@ -849,10 +890,10 @@ png_get_oFFs(png_const_structrp png_ptr, png_const_inforp info_ptr,
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
*unit_type = (int)info_ptr->offset_unit_type;
- return (PNG_INFO_oFFs);
+ return PNG_INFO_oFFs;
}
- return (0);
+ return 0;
}
#endif
@@ -876,10 +917,10 @@ png_get_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
*nparams = (int)info_ptr->pcal_nparams;
*units = info_ptr->pcal_units;
*params = info_ptr->pcal_params;
- return (PNG_INFO_pCAL);
+ return PNG_INFO_pCAL;
}
- return (0);
+ return 0;
}
#endif
@@ -891,6 +932,8 @@ png_uint_32 PNGAPI
png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, png_fixed_point *width, png_fixed_point *height)
{
+ png_debug1(1, "in %s retrieval function", "sCAL");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_sCAL) != 0)
{
@@ -902,10 +945,10 @@ png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
*height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
"sCAL height");
- return (PNG_INFO_sCAL);
+ return PNG_INFO_sCAL;
}
- return(0);
+ return 0;
}
# endif /* FLOATING_ARITHMETIC */
# endif /* FIXED_POINT */
@@ -914,32 +957,36 @@ png_uint_32 PNGAPI
png_get_sCAL(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, double *width, double *height)
{
+ png_debug1(1, "in %s retrieval function", "sCAL(float)");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_sCAL) != 0)
{
*unit = info_ptr->scal_unit;
*width = atof(info_ptr->scal_s_width);
*height = atof(info_ptr->scal_s_height);
- return (PNG_INFO_sCAL);
+ return PNG_INFO_sCAL;
}
- return(0);
+ return 0;
}
# endif /* FLOATING POINT */
png_uint_32 PNGAPI
png_get_sCAL_s(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, png_charpp width, png_charpp height)
{
+ png_debug1(1, "in %s retrieval function", "sCAL(str)");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_sCAL) != 0)
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_s_width;
*height = info_ptr->scal_s_height;
- return (PNG_INFO_sCAL);
+ return PNG_INFO_sCAL;
}
- return(0);
+ return 0;
}
#endif /* sCAL */
@@ -974,7 +1021,7 @@ png_get_pHYs(png_const_structrp png_ptr, png_const_inforp info_ptr,
}
}
- return (retval);
+ return retval;
}
#endif /* pHYs */
@@ -990,10 +1037,10 @@ png_get_PLTE(png_const_structrp png_ptr, png_inforp info_ptr,
*palette = info_ptr->palette;
*num_palette = info_ptr->num_palette;
png_debug1(3, "num_palette = %d", *num_palette);
- return (PNG_INFO_PLTE);
+ return PNG_INFO_PLTE;
}
- return (0);
+ return 0;
}
#ifdef PNG_sBIT_SUPPORTED
@@ -1007,10 +1054,10 @@ png_get_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
(info_ptr->valid & PNG_INFO_sBIT) != 0 && sig_bit != NULL)
{
*sig_bit = &(info_ptr->sig_bit);
- return (PNG_INFO_sBIT);
+ return PNG_INFO_sBIT;
}
- return (0);
+ return 0;
}
#endif
@@ -1021,7 +1068,7 @@ png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
{
if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
{
- png_debug1(1, "in 0x%lx retrieval function",
+ png_debug1(1, "in text retrieval function, chunk typeid = 0x%lx",
(unsigned long)png_ptr->chunk_name);
if (text_ptr != NULL)
@@ -1036,7 +1083,7 @@ png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
if (num_text != NULL)
*num_text = 0;
- return(0);
+ return 0;
}
#endif
@@ -1051,10 +1098,10 @@ png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
(info_ptr->valid & PNG_INFO_tIME) != 0 && mod_time != NULL)
{
*mod_time = &(info_ptr->mod_time);
- return (PNG_INFO_tIME);
+ return PNG_INFO_tIME;
}
- return (0);
+ return 0;
}
#endif
@@ -1064,11 +1111,12 @@ png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
{
png_uint_32 retval = 0;
+
+ png_debug1(1, "in %s retrieval function", "tRNS");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_tRNS) != 0)
{
- png_debug1(1, "in %s retrieval function", "tRNS");
-
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (trans_alpha != NULL)
@@ -1100,7 +1148,7 @@ png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
}
}
- return (retval);
+ return retval;
}
#endif
@@ -1115,13 +1163,13 @@ png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
return info_ptr->unknown_chunks_num;
}
- return (0);
+ return 0;
}
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
-png_get_rgb_to_gray_status (png_const_structrp png_ptr)
+png_get_rgb_to_gray_status(png_const_structrp png_ptr)
{
return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
}
@@ -1135,7 +1183,7 @@ png_get_user_chunk_ptr(png_const_structrp png_ptr)
}
#endif
-png_size_t PNGAPI
+size_t PNGAPI
png_get_compression_buffer_size(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
@@ -1162,27 +1210,27 @@ png_get_compression_buffer_size(png_const_structrp png_ptr)
/* These functions were added to libpng 1.2.6 and were enabled
* by default in libpng-1.4.0 */
png_uint_32 PNGAPI
-png_get_user_width_max (png_const_structrp png_ptr)
+png_get_user_width_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_width_max : 0);
}
png_uint_32 PNGAPI
-png_get_user_height_max (png_const_structrp png_ptr)
+png_get_user_height_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_height_max : 0);
}
/* This function was added to libpng 1.4.0 */
png_uint_32 PNGAPI
-png_get_chunk_cache_max (png_const_structrp png_ptr)
+png_get_chunk_cache_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
}
/* This function was added to libpng 1.4.1 */
png_alloc_size_t PNGAPI
-png_get_chunk_malloc_max (png_const_structrp png_ptr)
+png_get_chunk_malloc_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
}
@@ -1191,13 +1239,13 @@ png_get_chunk_malloc_max (png_const_structrp png_ptr)
/* These functions were added to libpng 1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
-png_get_io_state (png_const_structrp png_ptr)
+png_get_io_state(png_const_structrp png_ptr)
{
return png_ptr->io_state;
}
png_uint_32 PNGAPI
-png_get_io_chunk_type (png_const_structrp png_ptr)
+png_get_io_chunk_type(png_const_structrp png_ptr)
{
return png_ptr->chunk_name;
}
@@ -1211,7 +1259,7 @@ png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr)
if (png_ptr != NULL && info_ptr != NULL)
return png_ptr->num_palette_max;
- return (-1);
+ return -1;
}
# endif
#endif
diff --git a/thirdparty/libpng/pnginfo.h b/thirdparty/libpng/pnginfo.h
index 361ed8be7..1f98dedc4 100644
--- a/thirdparty/libpng/pnginfo.h
+++ b/thirdparty/libpng/pnginfo.h
@@ -1,10 +1,10 @@
/* pnginfo.h - header file for PNG reference library
*
- * Last changed in libpng 1.6.1 [March 28, 2013]
- * Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2013,2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -55,10 +55,10 @@
struct png_info_def
{
/* The following are necessary for every PNG file */
- png_uint_32 width; /* width of image in pixels (from IHDR) */
- png_uint_32 height; /* height of image in pixels (from IHDR) */
- png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
- png_size_t rowbytes; /* bytes needed to hold an untransformed row */
+ png_uint_32 width; /* width of image in pixels (from IHDR) */
+ png_uint_32 height; /* height of image in pixels (from IHDR) */
+ png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
+ size_t rowbytes; /* bytes needed to hold an untransformed row */
png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
@@ -185,6 +185,14 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
#endif
+#ifdef PNG_eXIf_SUPPORTED
+ int num_exif; /* Added at libpng-1.6.31 */
+ png_bytep exif;
+# ifdef PNG_READ_eXIf_SUPPORTED
+ png_bytep eXIf_buf; /* Added at libpng-1.6.32 */
+# endif
+#endif
+
#ifdef PNG_hIST_SUPPORTED
/* The hIST chunk contains the relative frequency or importance of the
* various palette entries, so that a viewer can intelligently select a
@@ -239,7 +247,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
/* The sCAL chunk describes the actual physical dimensions of the
* subject matter of the graphic. The chunk contains a unit specification
* a byte value, and two ASCII strings representing floating-point
- * values. The values are width and height corresponsing to one pixel
+ * values. The values are width and height corresponding to one pixel
* in the image. Data values are valid if (valid & PNG_INFO_sCAL) is
* non-zero.
*/
diff --git a/thirdparty/libpng/pnglibconf.h b/thirdparty/libpng/pnglibconf.h
index d7d21b2de..83f09fbe7 100644
--- a/thirdparty/libpng/pnglibconf.h
+++ b/thirdparty/libpng/pnglibconf.h
@@ -1,10 +1,9 @@
-/* libpng 1.6.25 STANDARD API DEFINITION */
-
/* pnglibconf.h - library build configuration */
-/* Libpng version 1.6.25 - September 1, 2016 */
+/* libpng version 1.6.43 */
-/* Copyright (c) 1998-2015 Glenn Randers-Pehrson */
+/* Copyright (c) 2018-2024 Cosmin Truta */
+/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
/* This code is released under the libpng license. */
/* For conditions of distribution and use, see the disclaimer */
@@ -28,6 +27,7 @@
#define PNG_COLORSPACE_SUPPORTED
#define PNG_CONSOLE_IO_SUPPORTED
#define PNG_CONVERT_tIME_SUPPORTED
+/*#undef PNG_DISABLE_ADLER32_CHECK_SUPPORTED*/
#define PNG_EASY_ACCESS_SUPPORTED
/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/
#define PNG_ERROR_TEXT_SUPPORTED
@@ -42,8 +42,14 @@
#define PNG_INCH_CONVERSIONS_SUPPORTED
#define PNG_INFO_IMAGE_SUPPORTED
#define PNG_IO_STATE_SUPPORTED
+/*#undef PNG_MIPS_MMI_API_SUPPORTED*/
+/*#undef PNG_MIPS_MMI_CHECK_SUPPORTED*/
+/*#undef PNG_MIPS_MSA_API_SUPPORTED*/
+/*#undef PNG_MIPS_MSA_CHECK_SUPPORTED*/
#define PNG_MNG_FEATURES_SUPPORTED
#define PNG_POINTER_INDEXING_SUPPORTED
+/*#undef PNG_POWERPC_VSX_API_SUPPORTED*/
+/*#undef PNG_POWERPC_VSX_CHECK_SUPPORTED*/
#define PNG_PROGRESSIVE_READ_SUPPORTED
#define PNG_READ_16BIT_SUPPORTED
#define PNG_READ_ALPHA_MODE_SUPPORTED
@@ -82,6 +88,7 @@
#define PNG_READ_USER_TRANSFORM_SUPPORTED
#define PNG_READ_bKGD_SUPPORTED
#define PNG_READ_cHRM_SUPPORTED
+#define PNG_READ_eXIf_SUPPORTED
#define PNG_READ_gAMA_SUPPORTED
#define PNG_READ_hIST_SUPPORTED
#define PNG_READ_iCCP_SUPPORTED
@@ -151,6 +158,7 @@
#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
#define PNG_WRITE_bKGD_SUPPORTED
#define PNG_WRITE_cHRM_SUPPORTED
+#define PNG_WRITE_eXIf_SUPPORTED
#define PNG_WRITE_gAMA_SUPPORTED
#define PNG_WRITE_hIST_SUPPORTED
#define PNG_WRITE_iCCP_SUPPORTED
@@ -168,6 +176,7 @@
#define PNG_WRITE_zTXt_SUPPORTED
#define PNG_bKGD_SUPPORTED
#define PNG_cHRM_SUPPORTED
+#define PNG_eXIf_SUPPORTED
#define PNG_gAMA_SUPPORTED
#define PNG_hIST_SUPPORTED
#define PNG_iCCP_SUPPORTED
diff --git a/thirdparty/libpng/pngmem.c b/thirdparty/libpng/pngmem.c
index 7053ec96f..09ed9c1c9 100644
--- a/thirdparty/libpng/pngmem.c
+++ b/thirdparty/libpng/pngmem.c
@@ -1,10 +1,10 @@
/* pngmem.c - stub functions for memory allocation
*
- * Last changed in libpng 1.6.24 [August 4, 2016%]
+ * Copyright (c) 2018 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -109,7 +109,7 @@ static png_voidp
png_malloc_array_checked(png_const_structrp png_ptr, int nelements,
size_t element_size)
{
- png_alloc_size_t req = nelements; /* known to be > 0 */
+ png_alloc_size_t req = (png_alloc_size_t)nelements; /* known to be > 0 */
if (req <= PNG_SIZE_MAX/element_size)
return png_malloc_base(png_ptr, req * element_size);
diff --git a/thirdparty/libpng/pngpread.c b/thirdparty/libpng/pngpread.c
index 794352f42..ffab19c08 100644
--- a/thirdparty/libpng/pngpread.c
+++ b/thirdparty/libpng/pngpread.c
@@ -1,10 +1,10 @@
/* pngpread.c - read a png file in push mode
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -34,7 +34,7 @@ if (png_ptr->buffer_size < N) \
void PNGAPI
png_process_data(png_structrp png_ptr, png_inforp info_ptr,
- png_bytep buffer, png_size_t buffer_size)
+ png_bytep buffer, size_t buffer_size)
{
if (png_ptr == NULL || info_ptr == NULL)
return;
@@ -47,7 +47,7 @@ png_process_data(png_structrp png_ptr, png_inforp info_ptr,
}
}
-png_size_t PNGAPI
+size_t PNGAPI
png_process_data_pause(png_structrp png_ptr, int save)
{
if (png_ptr != NULL)
@@ -60,7 +60,7 @@ png_process_data_pause(png_structrp png_ptr, int save)
else
{
/* This includes any pending saved bytes: */
- png_size_t remaining = png_ptr->buffer_size;
+ size_t remaining = png_ptr->buffer_size;
png_ptr->buffer_size = 0;
/* So subtract the saved buffer size, unless all the data
@@ -133,8 +133,8 @@ png_process_some_data(png_structrp png_ptr, png_inforp info_ptr)
void /* PRIVATE */
png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
{
- png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */
- num_to_check = 8 - num_checked;
+ size_t num_checked = png_ptr->sig_bytes; /* SAFE, does not exceed 8 */
+ size_t num_to_check = 8 - num_checked;
if (png_ptr->buffer_size < num_to_check)
{
@@ -145,10 +145,10 @@ png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
num_to_check);
png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
- if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
+ if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check) != 0)
{
if (num_checked < 4 &&
- png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4) != 0)
png_error(png_ptr, "Not a PNG file");
else
@@ -189,6 +189,7 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
png_crc_read(png_ptr, chunk_tag, 4);
png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+ png_check_chunk_length(png_ptr, png_ptr->push_length);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
}
@@ -293,6 +294,14 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
}
+#endif
+#ifdef PNG_READ_eXIf_SUPPORTED
+ else if (png_ptr->chunk_name == png_eXIf)
+ {
+ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_handle_eXIf(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
#endif
#ifdef PNG_READ_sRGB_SUPPORTED
else if (chunk_name == png_sRGB)
@@ -417,7 +426,7 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
}
void PNGCBAPI
-png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
+png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, size_t length)
{
png_bytep ptr;
@@ -427,7 +436,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
ptr = buffer;
if (png_ptr->save_buffer_size != 0)
{
- png_size_t save_size;
+ size_t save_size;
if (length < png_ptr->save_buffer_size)
save_size = length;
@@ -444,7 +453,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
}
if (length != 0 && png_ptr->current_buffer_size != 0)
{
- png_size_t save_size;
+ size_t save_size;
if (length < png_ptr->current_buffer_size)
save_size = length;
@@ -466,7 +475,7 @@ png_push_save_buffer(png_structrp png_ptr)
{
if (png_ptr->save_buffer_ptr != png_ptr->save_buffer)
{
- png_size_t i, istop;
+ size_t i, istop;
png_bytep sp;
png_bytep dp;
@@ -481,7 +490,7 @@ png_push_save_buffer(png_structrp png_ptr)
if (png_ptr->save_buffer_size + png_ptr->current_buffer_size >
png_ptr->save_buffer_max)
{
- png_size_t new_max;
+ size_t new_max;
png_bytep old_buffer;
if (png_ptr->save_buffer_size > PNG_SIZE_MAX -
@@ -493,7 +502,7 @@ png_push_save_buffer(png_structrp png_ptr)
new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
old_buffer = png_ptr->save_buffer;
png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
- (png_size_t)new_max);
+ (size_t)new_max);
if (png_ptr->save_buffer == NULL)
{
@@ -521,7 +530,7 @@ png_push_save_buffer(png_structrp png_ptr)
void /* PRIVATE */
png_push_restore_buffer(png_structrp png_ptr, png_bytep buffer,
- png_size_t buffer_length)
+ size_t buffer_length)
{
png_ptr->current_buffer = buffer;
png_ptr->current_buffer_size = buffer_length;
@@ -561,7 +570,7 @@ png_push_read_IDAT(png_structrp png_ptr)
if (png_ptr->idat_size != 0 && png_ptr->save_buffer_size != 0)
{
- png_size_t save_size = png_ptr->save_buffer_size;
+ size_t save_size = png_ptr->save_buffer_size;
png_uint_32 idat_size = png_ptr->idat_size;
/* We want the smaller of 'idat_size' and 'current_buffer_size', but they
@@ -571,7 +580,7 @@ png_push_read_IDAT(png_structrp png_ptr)
* will break on either 16-bit or 64-bit platforms.
*/
if (idat_size < save_size)
- save_size = (png_size_t)idat_size;
+ save_size = (size_t)idat_size;
else
idat_size = (png_uint_32)save_size;
@@ -588,7 +597,7 @@ png_push_read_IDAT(png_structrp png_ptr)
if (png_ptr->idat_size != 0 && png_ptr->current_buffer_size != 0)
{
- png_size_t save_size = png_ptr->current_buffer_size;
+ size_t save_size = png_ptr->current_buffer_size;
png_uint_32 idat_size = png_ptr->idat_size;
/* We want the smaller of 'idat_size' and 'current_buffer_size', but they
@@ -597,7 +606,7 @@ png_push_read_IDAT(png_structrp png_ptr)
* larger - this cannot overflow.
*/
if (idat_size < save_size)
- save_size = (png_size_t)idat_size;
+ save_size = (size_t)idat_size;
else
idat_size = (png_uint_32)save_size;
@@ -624,7 +633,7 @@ png_push_read_IDAT(png_structrp png_ptr)
void /* PRIVATE */
png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
- png_size_t buffer_length)
+ size_t buffer_length)
{
/* The caller checks for a non-zero buffer length. */
if (!(buffer_length > 0) || buffer == NULL)
@@ -684,7 +693,12 @@ png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
png_warning(png_ptr, "Truncated compressed data in IDAT");
else
- png_error(png_ptr, "Decompression error in IDAT");
+ {
+ if (ret == Z_DATA_ERROR)
+ png_benign_error(png_ptr, "IDAT: ADLER32 checksum mismatch");
+ else
+ png_error(png_ptr, "Decompression error in IDAT");
+ }
/* Skip the check on unprocessed input */
return;
@@ -966,20 +980,20 @@ png_read_push_finish_row(png_structrp png_ptr)
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
+ static const png_byte png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
+ static const png_byte png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
+ static const png_byte png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
/* Height of interlace block. This is not currently used - if you need
* it, uncomment it here and in png.h
- static PNG_CONST png_byte png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
*/
#endif
@@ -1083,7 +1097,7 @@ png_voidp PNGAPI
png_get_progressive_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
- return (NULL);
+ return NULL;
return png_ptr->io_ptr;
}
diff --git a/thirdparty/libpng/pngpriv.h b/thirdparty/libpng/pngpriv.h
index bed1cabe7..9bfdb7134 100644
--- a/thirdparty/libpng/pngpriv.h
+++ b/thirdparty/libpng/pngpriv.h
@@ -1,10 +1,10 @@
/* pngpriv.h - private declarations for use inside libpng
*
- * Last changed in libpng 1.6.25 [September 1, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -35,7 +35,9 @@
* Windows/Visual Studio) there is no effect; the OS specific tests below are
* still required (as of 2011-05-02.)
*/
-#define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
+#ifndef _POSIX_SOURCE
+# define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
+#endif
#ifndef PNG_VERSION_INFO_ONLY
/* Standard library headers not required by png.h: */
@@ -172,7 +174,10 @@
# else /* !defined __ARM_NEON__ */
/* The 'intrinsics' code simply won't compile without this -mfpu=neon:
*/
-# define PNG_ARM_NEON_IMPLEMENTATION 2
+# if !defined(__aarch64__) && !defined(_M_ARM64)
+ /* The assembler code currently does not work on ARM64 */
+# define PNG_ARM_NEON_IMPLEMENTATION 2
+# endif /* __aarch64__ */
# endif /* __ARM_NEON__ */
# endif /* !PNG_ARM_NEON_IMPLEMENTATION */
@@ -180,18 +185,91 @@
/* Use the intrinsics code by default. */
# define PNG_ARM_NEON_IMPLEMENTATION 1
# endif
+#else /* PNG_ARM_NEON_OPT == 0 */
+# define PNG_ARM_NEON_IMPLEMENTATION 0
#endif /* PNG_ARM_NEON_OPT > 0 */
#ifndef PNG_MIPS_MSA_OPT
-# if defined(__mips_msa) && (__mips_isa_rev >= 5) && defined(PNG_ALIGNED_MEMORY_SUPPORTED)
+# if defined(__mips_msa) && (__mips_isa_rev >= 5) && \
+ defined(PNG_ALIGNED_MEMORY_SUPPORTED)
# define PNG_MIPS_MSA_OPT 2
# else
# define PNG_MIPS_MSA_OPT 0
# endif
#endif
+#ifndef PNG_MIPS_MMI_OPT
+# ifdef PNG_MIPS_MMI
+# if defined(__mips_loongson_mmi) && (_MIPS_SIM == _ABI64) && \
+ defined(PNG_ALIGNED_MEMORY_SUPPORTED)
+# define PNG_MIPS_MMI_OPT 1
+# else
+# define PNG_MIPS_MMI_OPT 0
+# endif
+# else
+# define PNG_MIPS_MMI_OPT 0
+# endif
+#endif
+
+#ifndef PNG_POWERPC_VSX_OPT
+# if defined(__PPC64__) && defined(__ALTIVEC__) && defined(__VSX__)
+# define PNG_POWERPC_VSX_OPT 2
+# else
+# define PNG_POWERPC_VSX_OPT 0
+# endif
+#endif
+
+#ifndef PNG_LOONGARCH_LSX_OPT
+# if defined(__loongarch_sx)
+# define PNG_LOONGARCH_LSX_OPT 1
+# else
+# define PNG_LOONGARCH_LSX_OPT 0
+# endif
+#endif
+
+#ifndef PNG_INTEL_SSE_OPT
+# ifdef PNG_INTEL_SSE
+ /* Only check for SSE if the build configuration has been modified to
+ * enable SSE optimizations. This means that these optimizations will
+ * be off by default. See contrib/intel for more details.
+ */
+# if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
+ defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
+ (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
+# define PNG_INTEL_SSE_OPT 1
+# else
+# define PNG_INTEL_SSE_OPT 0
+# endif
+# else
+# define PNG_INTEL_SSE_OPT 0
+# endif
+#endif
+
+#if PNG_INTEL_SSE_OPT > 0
+# ifndef PNG_INTEL_SSE_IMPLEMENTATION
+# if defined(__SSE4_1__) || defined(__AVX__)
+ /* We are not actually using AVX, but checking for AVX is the best
+ way we can detect SSE4.1 and SSSE3 on MSVC.
+ */
+# define PNG_INTEL_SSE_IMPLEMENTATION 3
+# elif defined(__SSSE3__)
+# define PNG_INTEL_SSE_IMPLEMENTATION 2
+# elif defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
+ (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
+# define PNG_INTEL_SSE_IMPLEMENTATION 1
+# else
+# define PNG_INTEL_SSE_IMPLEMENTATION 0
+# endif
+# endif
+
+# if PNG_INTEL_SSE_IMPLEMENTATION > 0
+# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_sse2
+# endif
+#else
+# define PNG_INTEL_SSE_IMPLEMENTATION 0
+#endif
+
#if PNG_MIPS_MSA_OPT > 0
-# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_msa
# ifndef PNG_MIPS_MSA_IMPLEMENTATION
# if defined(__mips_msa)
# if defined(__clang__)
@@ -207,9 +285,41 @@
# ifndef PNG_MIPS_MSA_IMPLEMENTATION
# define PNG_MIPS_MSA_IMPLEMENTATION 1
+# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_mips
# endif
+#else
+# define PNG_MIPS_MSA_IMPLEMENTATION 0
#endif /* PNG_MIPS_MSA_OPT > 0 */
+#if PNG_MIPS_MMI_OPT > 0
+# ifndef PNG_MIPS_MMI_IMPLEMENTATION
+# if defined(__mips_loongson_mmi) && (_MIPS_SIM == _ABI64)
+# define PNG_MIPS_MMI_IMPLEMENTATION 2
+# else /* !defined __mips_loongson_mmi || _MIPS_SIM != _ABI64 */
+# define PNG_MIPS_MMI_IMPLEMENTATION 0
+# endif /* __mips_loongson_mmi && _MIPS_SIM == _ABI64 */
+# endif /* !PNG_MIPS_MMI_IMPLEMENTATION */
+
+# if PNG_MIPS_MMI_IMPLEMENTATION > 0
+# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_mips
+# endif
+#else
+# define PNG_MIPS_MMI_IMPLEMENTATION 0
+#endif /* PNG_MIPS_MMI_OPT > 0 */
+
+#if PNG_POWERPC_VSX_OPT > 0
+# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_vsx
+# define PNG_POWERPC_VSX_IMPLEMENTATION 1
+#else
+# define PNG_POWERPC_VSX_IMPLEMENTATION 0
+#endif
+
+#if PNG_LOONGARCH_LSX_OPT > 0
+# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_lsx
+# define PNG_LOONGARCH_LSX_IMPLEMENTATION 1
+#else
+# define PNG_LOONGARCH_LSX_IMPLEMENTATION 0
+#endif
/* Is this a build of a DLL where compilation of the object modules requires
* different preprocessor settings to those required for a simple library? If
@@ -403,6 +513,21 @@
# define png_fixed_error(s1,s2) png_err(s1)
#endif
+/* Some fixed point APIs are still required even if not exported because
+ * they get used by the corresponding floating point APIs. This magic
+ * deals with this:
+ */
+#ifdef PNG_FIXED_POINT_SUPPORTED
+# define PNGFAPI PNGAPI
+#else
+# define PNGFAPI /* PRIVATE */
+#endif
+
+#ifndef PNG_VERSION_INFO_ONLY
+/* Other defines specific to compilers can go here. Try to keep
+ * them inside an appropriate ifdef/endif pair for portability.
+ */
+
/* C allows up-casts from (void*) to any pointer and (const void*) to any
* pointer to a const object. C++ regards this as a type error and requires an
* explicit, static, cast and provides the static_cast<> rune to ensure that
@@ -417,25 +542,11 @@
static_cast(static_cast(value))
#else
# define png_voidcast(type, value) (value)
-# define png_constcast(type, value) ((type)(value))
+# define png_constcast(type, value) ((type)(void*)(const void*)(value))
# define png_aligncast(type, value) ((void*)(value))
# define png_aligncastconst(type, value) ((const void*)(value))
#endif /* __cplusplus */
-/* Some fixed point APIs are still required even if not exported because
- * they get used by the corresponding floating point APIs. This magic
- * deals with this:
- */
-#ifdef PNG_FIXED_POINT_SUPPORTED
-# define PNGFAPI PNGAPI
-#else
-# define PNGFAPI /* PRIVATE */
-#endif
-
-#ifndef PNG_VERSION_INFO_ONLY
-/* Other defines specific to compilers can go here. Try to keep
- * them inside an appropriate ifdef/endif pair for portability.
- */
#if defined(PNG_FLOATING_POINT_SUPPORTED) ||\
defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
/* png.c requires the following ANSI-C constants if the conversion of
@@ -447,18 +558,8 @@
*/
# include
-# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
- defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
- /* We need to check that hasn't already been included earlier
- * as it seems it doesn't agree with , yet we should really use
- * if possible.
- */
-# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
-# include
-# endif
-# else
-# include
-# endif
+# include
+
# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
@@ -473,9 +574,8 @@
# include
#endif
-#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
- defined(_WIN32) || defined(__WIN32__)
-# include /* defines _WINDOWS_ macro */
+#if defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
+# include
#endif
#endif /* PNG_VERSION_INFO_ONLY */
@@ -484,24 +584,20 @@
* functions that are passed far data must be model-independent.
*/
-/* Memory model/platform independent fns */
+/* Platform-independent functions */
#ifndef PNG_ABORT
-# ifdef _WINDOWS_
-# define PNG_ABORT() ExitProcess(0)
-# else
-# define PNG_ABORT() abort()
-# endif
+# define PNG_ABORT() abort()
#endif
/* These macros may need to be architecture dependent. */
-#define PNG_ALIGN_NONE 0 /* do not use data alignment */
-#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
+#define PNG_ALIGN_NONE 0 /* do not use data alignment */
+#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
#ifdef offsetof
-# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
+# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
#else
# define PNG_ALIGN_OFFSET -1 /* prevent the use of this */
#endif
-#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
+#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
#ifndef PNG_ALIGN_TYPE
/* Default to using aligned access optimizations and requiring alignment to a
@@ -515,25 +611,25 @@
/* This is used because in some compiler implementations non-aligned
* structure members are supported, so the offsetof approach below fails.
* Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access
- * is good for performance. Do not do this unless you have tested the result
- * and understand it.
+ * is good for performance. Do not do this unless you have tested the
+ * result and understand it.
*/
-# define png_alignof(type) (sizeof (type))
+# define png_alignof(type) (sizeof(type))
#else
# if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET
-# define png_alignof(type) offsetof(struct{char c; type t;}, t)
+# define png_alignof(type) offsetof(struct{char c; type t;}, t)
# else
-# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
-# define png_alignof(type) (1)
-# endif
- /* Else leave png_alignof undefined to prevent use thereof */
+# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
+# define png_alignof(type) 1
+# endif
+ /* Else leave png_alignof undefined to prevent use thereof */
# endif
#endif
-/* This implicitly assumes alignment is always to a power of 2. */
+/* This implicitly assumes alignment is always a multiple of 2. */
#ifdef png_alignof
-# define png_isaligned(ptr, type)\
- ((((const char*)ptr-(const char*)0) & (png_alignof(type)-1)) == 0)
+# define png_isaligned(ptr, type) \
+ (((type)(size_t)((const void*)(ptr)) & (type)(png_alignof(type)-1)) == 0)
#else
# define png_isaligned(ptr, type) 0
#endif
@@ -550,92 +646,92 @@
* are defined in png.h because they need to be visible to applications
* that call png_set_unknown_chunk().
*/
-/* #define PNG_HAVE_IHDR 0x01 (defined in png.h) */
-/* #define PNG_HAVE_PLTE 0x02 (defined in png.h) */
-#define PNG_HAVE_IDAT 0x04
-/* #define PNG_AFTER_IDAT 0x08 (defined in png.h) */
-#define PNG_HAVE_IEND 0x10
- /* 0x20 (unused) */
- /* 0x40 (unused) */
- /* 0x80 (unused) */
-#define PNG_HAVE_CHUNK_HEADER 0x100
-#define PNG_WROTE_tIME 0x200
-#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
-#define PNG_BACKGROUND_IS_GRAY 0x800
-#define PNG_HAVE_PNG_SIGNATURE 0x1000
-#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
- /* 0x4000 (unused) */
-#define PNG_IS_READ_STRUCT 0x8000 /* Else is a write struct */
+/* #define PNG_HAVE_IHDR 0x01U (defined in png.h) */
+/* #define PNG_HAVE_PLTE 0x02U (defined in png.h) */
+#define PNG_HAVE_IDAT 0x04U
+/* #define PNG_AFTER_IDAT 0x08U (defined in png.h) */
+#define PNG_HAVE_IEND 0x10U
+ /* 0x20U (unused) */
+ /* 0x40U (unused) */
+ /* 0x80U (unused) */
+#define PNG_HAVE_CHUNK_HEADER 0x100U
+#define PNG_WROTE_tIME 0x200U
+#define PNG_WROTE_INFO_BEFORE_PLTE 0x400U
+#define PNG_BACKGROUND_IS_GRAY 0x800U
+#define PNG_HAVE_PNG_SIGNATURE 0x1000U
+#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */
+#define PNG_WROTE_eXIf 0x4000U
+#define PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */
/* Flags for the transformations the PNG library does on the image data */
-#define PNG_BGR 0x0001
-#define PNG_INTERLACE 0x0002
-#define PNG_PACK 0x0004
-#define PNG_SHIFT 0x0008
-#define PNG_SWAP_BYTES 0x0010
-#define PNG_INVERT_MONO 0x0020
-#define PNG_QUANTIZE 0x0040
-#define PNG_COMPOSE 0x0080 /* Was PNG_BACKGROUND */
-#define PNG_BACKGROUND_EXPAND 0x0100
-#define PNG_EXPAND_16 0x0200 /* Added to libpng 1.5.2 */
-#define PNG_16_TO_8 0x0400 /* Becomes 'chop' in 1.5.4 */
-#define PNG_RGBA 0x0800
-#define PNG_EXPAND 0x1000
-#define PNG_GAMMA 0x2000
-#define PNG_GRAY_TO_RGB 0x4000
-#define PNG_FILLER 0x8000
-#define PNG_PACKSWAP 0x10000
-#define PNG_SWAP_ALPHA 0x20000
-#define PNG_STRIP_ALPHA 0x40000
-#define PNG_INVERT_ALPHA 0x80000
-#define PNG_USER_TRANSFORM 0x100000
-#define PNG_RGB_TO_GRAY_ERR 0x200000
-#define PNG_RGB_TO_GRAY_WARN 0x400000
-#define PNG_RGB_TO_GRAY 0x600000 /* two bits, RGB_TO_GRAY_ERR|WARN */
-#define PNG_ENCODE_ALPHA 0x800000 /* Added to libpng-1.5.4 */
-#define PNG_ADD_ALPHA 0x1000000 /* Added to libpng-1.2.7 */
-#define PNG_EXPAND_tRNS 0x2000000 /* Added to libpng-1.2.9 */
-#define PNG_SCALE_16_TO_8 0x4000000 /* Added to libpng-1.5.4 */
- /* 0x8000000 unused */
- /* 0x10000000 unused */
- /* 0x20000000 unused */
- /* 0x40000000 unused */
+#define PNG_BGR 0x0001U
+#define PNG_INTERLACE 0x0002U
+#define PNG_PACK 0x0004U
+#define PNG_SHIFT 0x0008U
+#define PNG_SWAP_BYTES 0x0010U
+#define PNG_INVERT_MONO 0x0020U
+#define PNG_QUANTIZE 0x0040U
+#define PNG_COMPOSE 0x0080U /* Was PNG_BACKGROUND */
+#define PNG_BACKGROUND_EXPAND 0x0100U
+#define PNG_EXPAND_16 0x0200U /* Added to libpng 1.5.2 */
+#define PNG_16_TO_8 0x0400U /* Becomes 'chop' in 1.5.4 */
+#define PNG_RGBA 0x0800U
+#define PNG_EXPAND 0x1000U
+#define PNG_GAMMA 0x2000U
+#define PNG_GRAY_TO_RGB 0x4000U
+#define PNG_FILLER 0x8000U
+#define PNG_PACKSWAP 0x10000U
+#define PNG_SWAP_ALPHA 0x20000U
+#define PNG_STRIP_ALPHA 0x40000U
+#define PNG_INVERT_ALPHA 0x80000U
+#define PNG_USER_TRANSFORM 0x100000U
+#define PNG_RGB_TO_GRAY_ERR 0x200000U
+#define PNG_RGB_TO_GRAY_WARN 0x400000U
+#define PNG_RGB_TO_GRAY 0x600000U /* two bits, RGB_TO_GRAY_ERR|WARN */
+#define PNG_ENCODE_ALPHA 0x800000U /* Added to libpng-1.5.4 */
+#define PNG_ADD_ALPHA 0x1000000U /* Added to libpng-1.2.7 */
+#define PNG_EXPAND_tRNS 0x2000000U /* Added to libpng-1.2.9 */
+#define PNG_SCALE_16_TO_8 0x4000000U /* Added to libpng-1.5.4 */
+ /* 0x8000000U unused */
+ /* 0x10000000U unused */
+ /* 0x20000000U unused */
+ /* 0x40000000U unused */
/* Flags for png_create_struct */
-#define PNG_STRUCT_PNG 0x0001
-#define PNG_STRUCT_INFO 0x0002
+#define PNG_STRUCT_PNG 0x0001U
+#define PNG_STRUCT_INFO 0x0002U
/* Flags for the png_ptr->flags rather than declaring a byte for each one */
-#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
-#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002 /* Added to libpng-1.6.0 */
- /* 0x0004 unused */
-#define PNG_FLAG_ZSTREAM_ENDED 0x0008 /* Added to libpng-1.6.0 */
- /* 0x0010 unused */
- /* 0x0020 unused */
-#define PNG_FLAG_ROW_INIT 0x0040
-#define PNG_FLAG_FILLER_AFTER 0x0080
-#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
-#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
-#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
-#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
-#define PNG_FLAG_ASSUME_sRGB 0x1000 /* Added to libpng-1.5.4 */
-#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000 /* Added to libpng-1.5.4 */
-#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000 /* Added to libpng-1.5.4 */
-/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000 */
-/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000 */
-#define PNG_FLAG_LIBRARY_MISMATCH 0x20000
-#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000
-#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000
-#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000 /* Added to libpng-1.4.0 */
-#define PNG_FLAG_APP_WARNINGS_WARN 0x200000 /* Added to libpng-1.6.0 */
-#define PNG_FLAG_APP_ERRORS_WARN 0x400000 /* Added to libpng-1.6.0 */
- /* 0x800000 unused */
- /* 0x1000000 unused */
- /* 0x2000000 unused */
- /* 0x4000000 unused */
- /* 0x8000000 unused */
- /* 0x10000000 unused */
- /* 0x20000000 unused */
- /* 0x40000000 unused */
+#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001U
+#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002U /* Added to libpng-1.6.0 */
+ /* 0x0004U unused */
+#define PNG_FLAG_ZSTREAM_ENDED 0x0008U /* Added to libpng-1.6.0 */
+ /* 0x0010U unused */
+ /* 0x0020U unused */
+#define PNG_FLAG_ROW_INIT 0x0040U
+#define PNG_FLAG_FILLER_AFTER 0x0080U
+#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100U
+#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200U
+#define PNG_FLAG_CRC_CRITICAL_USE 0x0400U
+#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800U
+#define PNG_FLAG_ASSUME_sRGB 0x1000U /* Added to libpng-1.5.4 */
+#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000U /* Added to libpng-1.5.4 */
+#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000U /* Added to libpng-1.5.4 */
+/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000U */
+/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000U */
+#define PNG_FLAG_LIBRARY_MISMATCH 0x20000U
+#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000U
+#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000U
+#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000U /* Added to libpng-1.4.0 */
+#define PNG_FLAG_APP_WARNINGS_WARN 0x200000U /* Added to libpng-1.6.0 */
+#define PNG_FLAG_APP_ERRORS_WARN 0x400000U /* Added to libpng-1.6.0 */
+ /* 0x800000U unused */
+ /* 0x1000000U unused */
+ /* 0x2000000U unused */
+ /* 0x4000000U unused */
+ /* 0x8000000U unused */
+ /* 0x10000000U unused */
+ /* 0x20000000U unused */
+ /* 0x40000000U unused */
#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
PNG_FLAG_CRC_ANCILLARY_NOWARN)
@@ -666,8 +762,26 @@
/* Added to libpng-1.2.6 JB */
#define PNG_ROWBYTES(pixel_bits, width) \
((pixel_bits) >= 8 ? \
- ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
- (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
+ ((size_t)(width) * (((size_t)(pixel_bits)) >> 3)) : \
+ (( ((size_t)(width) * ((size_t)(pixel_bits))) + 7) >> 3) )
+
+/* This returns the number of trailing bits in the last byte of a row, 0 if the
+ * last byte is completely full of pixels. It is, in principle, (pixel_bits x
+ * width) % 8, but that would overflow for large 'width'. The second macro is
+ * the same except that it returns the number of unused bits in the last byte;
+ * (8-TRAILBITS), but 0 when TRAILBITS is 0.
+ *
+ * NOTE: these macros are intended to be self-evidently correct and never
+ * overflow on the assumption that pixel_bits is in the range 0..255. The
+ * arguments are evaluated only once and they can be signed (e.g. as a result of
+ * the integral promotions). The result of the expression always has type
+ * (png_uint_32), however the compiler always knows it is in the range 0..7.
+ */
+#define PNG_TRAILBITS(pixel_bits, width) \
+ (((pixel_bits) * ((width) % (png_uint_32)8)) % 8)
+
+#define PNG_PADBITS(pixel_bits, width) \
+ ((8 - PNG_TRAILBITS(pixel_bits, width)) % 8)
/* PNG_OUT_OF_RANGE returns true if value is outside the range
* ideal-delta..ideal+delta. Each argument is evaluated twice.
@@ -762,6 +876,7 @@
#define png_PLTE PNG_U32( 80, 76, 84, 69)
#define png_bKGD PNG_U32( 98, 75, 71, 68)
#define png_cHRM PNG_U32( 99, 72, 82, 77)
+#define png_eXIf PNG_U32(101, 88, 73, 102) /* registered July 2017 */
#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */
#define png_gAMA PNG_U32(103, 65, 77, 65)
#define png_gIFg PNG_U32(103, 73, 70, 103)
@@ -836,7 +951,7 @@
* PNG files the -I directives must match.
*
* The most likely explanation is that you passed a -I in CFLAGS. This will
- * not work; all the preprocessor directories and in particular all the -I
+ * not work; all the preprocessor directives and in particular all the -I
* directives must be in CPPFLAGS.
*/
#endif
@@ -965,15 +1080,15 @@ PNG_INTERNAL_FUNCTION(void,png_zfree,(voidpf png_ptr, voidpf ptr),PNG_EMPTY);
*/
PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_read_data,(png_structp png_ptr,
- png_bytep data, png_size_t length),PNG_EMPTY);
+ png_bytep data, size_t length),PNG_EMPTY);
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_push_fill_buffer,(png_structp png_ptr,
- png_bytep buffer, png_size_t length),PNG_EMPTY);
+ png_bytep buffer, size_t length),PNG_EMPTY);
#endif
PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_write_data,(png_structp png_ptr,
- png_bytep data, png_size_t length),PNG_EMPTY);
+ png_bytep data, size_t length),PNG_EMPTY);
#ifdef PNG_WRITE_FLUSH_SUPPORTED
# ifdef PNG_STDIO_SUPPORTED
@@ -987,7 +1102,7 @@ PNG_INTERNAL_FUNCTION(void,png_reset_crc,(png_structrp png_ptr),PNG_EMPTY);
/* Write the "data" buffer to whatever output you are using */
PNG_INTERNAL_FUNCTION(void,png_write_data,(png_structrp png_ptr,
- png_const_bytep data, png_size_t length),PNG_EMPTY);
+ png_const_bytep data, size_t length),PNG_EMPTY);
/* Read and check the PNG file signature */
PNG_INTERNAL_FUNCTION(void,png_read_sig,(png_structrp png_ptr,
@@ -999,7 +1114,7 @@ PNG_INTERNAL_FUNCTION(png_uint_32,png_read_chunk_header,(png_structrp png_ptr),
/* Read data from whatever input you are using into the "data" buffer */
PNG_INTERNAL_FUNCTION(void,png_read_data,(png_structrp png_ptr, png_bytep data,
- png_size_t length),PNG_EMPTY);
+ size_t length),PNG_EMPTY);
/* Read bytes into buf, and update png_ptr->crc */
PNG_INTERNAL_FUNCTION(void,png_crc_read,(png_structrp png_ptr, png_bytep buf,
@@ -1017,7 +1132,7 @@ PNG_INTERNAL_FUNCTION(int,png_crc_error,(png_structrp png_ptr),PNG_EMPTY);
* since this is the maximum buffer size we can specify.
*/
PNG_INTERNAL_FUNCTION(void,png_calculate_crc,(png_structrp png_ptr,
- png_const_bytep ptr, png_size_t length),PNG_EMPTY);
+ png_const_bytep ptr, size_t length),PNG_EMPTY);
#ifdef PNG_WRITE_FLUSH_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_flush,(png_structrp png_ptr),PNG_EMPTY);
@@ -1062,6 +1177,11 @@ PNG_INTERNAL_FUNCTION(void,png_write_sRGB,(png_structrp png_ptr,
int intent),PNG_EMPTY);
#endif
+#ifdef PNG_WRITE_eXIf_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_write_eXIf,(png_structrp png_ptr,
+ png_bytep exif, int num_exif),PNG_EMPTY);
+#endif
+
#ifdef PNG_WRITE_iCCP_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr,
png_const_charp name, png_const_bytep profile), PNG_EMPTY);
@@ -1095,7 +1215,7 @@ PNG_INTERNAL_FUNCTION(void,png_write_hIST,(png_structrp png_ptr,
/* Chunks that have keywords */
#ifdef PNG_WRITE_tEXt_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_write_tEXt,(png_structrp png_ptr,
- png_const_charp key, png_const_charp text, png_size_t text_len),PNG_EMPTY);
+ png_const_charp key, png_const_charp text, size_t text_len),PNG_EMPTY);
#endif
#ifdef PNG_WRITE_zTXt_SUPPORTED
@@ -1220,7 +1340,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
-#if PNG_MIPS_MSA_OPT > 0
+#if PNG_MIPS_MSA_IMPLEMENTATION == 1
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_msa,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_msa,(png_row_infop
@@ -1237,6 +1357,72 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_msa,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
+#if PNG_MIPS_MMI_IMPLEMENTATION > 0
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_mmi,(png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_mmi,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_mmi,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_mmi,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_mmi,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_mmi,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_mmi,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+#endif
+
+#if PNG_POWERPC_VSX_OPT > 0
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_vsx,(png_row_infop row_info,
+ png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_vsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_vsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_vsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_vsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_vsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_vsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+#endif
+
+#if PNG_INTEL_SSE_IMPLEMENTATION > 0
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+#endif
+
+#if PNG_LOONGARCH_LSX_IMPLEMENTATION == 1
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_lsx,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+#endif
+
/* Choose the best filter to use and filter the row data */
PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
png_row_infop row_info),PNG_EMPTY);
@@ -1263,7 +1449,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr),
/* Initialize the row buffers, etc. */
PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY);
-#if PNG_ZLIB_VERNUM >= 0x1240
+#if ZLIB_VERNUM >= 0x1240
PNG_INTERNAL_FUNCTION(int,png_zlib_inflate,(png_structrp png_ptr, int flush),
PNG_EMPTY);
# define PNG_INFLATE(pp, flush) png_zlib_inflate(pp, flush)
@@ -1329,6 +1515,11 @@ PNG_INTERNAL_FUNCTION(void,png_handle_cHRM,(png_structrp png_ptr,
png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
#endif
+#ifdef PNG_READ_eXIf_SUPPORTED
+PNG_INTERNAL_FUNCTION(void,png_handle_eXIf,(png_structrp png_ptr,
+ png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+#endif
+
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_handle_gAMA,(png_structrp png_ptr,
png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
@@ -1404,9 +1595,12 @@ PNG_INTERNAL_FUNCTION(void,png_handle_zTXt,(png_structrp png_ptr,
png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
#endif
-PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_structrp png_ptr,
+PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_const_structrp png_ptr,
png_uint_32 chunk_name),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_check_chunk_length,(png_const_structrp png_ptr,
+ png_uint_32 chunk_length),PNG_EMPTY);
+
PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr,
png_inforp info_ptr, png_uint_32 length, int keep),PNG_EMPTY);
/* This is the function that gets called for unknown chunks. The 'keep'
@@ -1448,10 +1642,10 @@ PNG_INTERNAL_FUNCTION(void,png_push_check_crc,(png_structrp png_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_save_buffer,(png_structrp png_ptr),
PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_restore_buffer,(png_structrp png_ptr,
- png_bytep buffer, png_size_t buffer_length),PNG_EMPTY);
+ png_bytep buffer, size_t buffer_length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_read_IDAT,(png_structrp png_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_process_IDAT_data,(png_structrp png_ptr,
- png_bytep buffer, png_size_t buffer_length),PNG_EMPTY);
+ png_bytep buffer, size_t buffer_length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_process_row,(png_structrp png_ptr),
PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_handle_unknown,(png_structrp png_ptr,
@@ -1721,13 +1915,13 @@ PNG_INTERNAL_FUNCTION(void,png_chunk_report,(png_const_structrp png_ptr,
#ifdef PNG_FLOATING_POINT_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_ascii_from_fp,(png_const_structrp png_ptr,
- png_charp ascii, png_size_t size, double fp, unsigned int precision),
+ png_charp ascii, size_t size, double fp, unsigned int precision),
PNG_EMPTY);
#endif /* FLOATING_POINT */
#ifdef PNG_FIXED_POINT_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr,
- png_charp ascii, png_size_t size, png_fixed_point fp),PNG_EMPTY);
+ png_charp ascii, size_t size, png_fixed_point fp),PNG_EMPTY);
#endif /* FIXED_POINT */
#endif /* sCAL */
@@ -1784,7 +1978,7 @@ PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr,
*/
#define PNG_FP_INVALID 512 /* Available for callers as a distinct value */
-/* Result codes for the parser (boolean - true meants ok, false means
+/* Result codes for the parser (boolean - true means ok, false means
* not ok yet.)
*/
#define PNG_FP_MAYBE 0 /* The number may be valid in the future */
@@ -1820,7 +2014,7 @@ PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr,
* the problem character.) This has not been tested within libpng.
*/
PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string,
- png_size_t size, int *statep, png_size_tp whereami),PNG_EMPTY);
+ size_t size, int *statep, size_t *whereami),PNG_EMPTY);
/* This is the same but it checks a complete string and returns true
* only if it just contains a floating point number. As of 1.5.4 this
@@ -1829,7 +2023,7 @@ PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string,
* for negative or zero values using the sticky flag.
*/
PNG_INTERNAL_FUNCTION(int,png_check_fp_string,(png_const_charp string,
- png_size_t size),PNG_EMPTY);
+ size_t size),PNG_EMPTY);
#endif /* pCAL || sCAL */
#if defined(PNG_GAMMA_SUPPORTED) ||\
@@ -1904,7 +2098,7 @@ typedef struct png_control
png_voidp error_buf; /* Always a jmp_buf at present. */
png_const_bytep memory; /* Memory buffer. */
- png_size_t size; /* Size of the memory buffer. */
+ size_t size; /* Size of the memory buffer. */
unsigned int for_write :1; /* Otherwise it is a read structure */
unsigned int owned_file :1; /* We own the file in io_ptr */
@@ -1968,15 +2162,53 @@ PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
-#if PNG_MIPS_MSA_OPT > 0
-PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_msa,
+#if PNG_MIPS_MSA_IMPLEMENTATION == 1
+PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
+
+# if PNG_MIPS_MMI_IMPLEMENTATION > 0
+PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips,
+ (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
+# endif
+
+# if PNG_INTEL_SSE_IMPLEMENTATION > 0
+PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_sse2,
+ (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
+# endif
+#endif
+
+#if PNG_LOONGARCH_LSX_OPT > 0
+PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_lsx,
+ (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
#endif
PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr,
png_const_charp key, png_bytep new_key), PNG_EMPTY);
+#if PNG_ARM_NEON_IMPLEMENTATION == 1
+PNG_INTERNAL_FUNCTION(void,
+ png_riffle_palette_neon,
+ (png_structrp),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(int,
+ png_do_expand_palette_rgba8_neon,
+ (png_structrp,
+ png_row_infop,
+ png_const_bytep,
+ const png_bytepp,
+ const png_bytepp),
+ PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(int,
+ png_do_expand_palette_rgb8_neon,
+ (png_structrp,
+ png_row_infop,
+ png_const_bytep,
+ const png_bytepp,
+ const png_bytepp),
+ PNG_EMPTY);
+#endif
+
/* Maintainer: Put new private prototypes here ^ */
#include "pngdebug.h"
diff --git a/thirdparty/libpng/pngread.c b/thirdparty/libpng/pngread.c
index 100032692..07a39df6e 100644
--- a/thirdparty/libpng/pngread.c
+++ b/thirdparty/libpng/pngread.c
@@ -1,10 +1,10 @@
/* pngread.c - read a PNG file
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -175,6 +175,11 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
+#ifdef PNG_READ_eXIf_SUPPORTED
+ else if (chunk_name == png_eXIf)
+ png_handle_eXIf(png_ptr, info_ptr, length);
+#endif
+
#ifdef PNG_READ_gAMA_SUPPORTED
else if (chunk_name == png_gAMA)
png_handle_gAMA(png_ptr, info_ptr, length);
@@ -359,9 +364,9 @@ png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
- png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
- png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
- png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
+ png_uint_32 s0 = (png_uint_32)(*(rp ) << 8) | *(rp + 1);
+ png_uint_32 s1 = (png_uint_32)(*(rp + 2) << 8) | *(rp + 3);
+ png_uint_32 s2 = (png_uint_32)(*(rp + 4) << 8) | *(rp + 5);
png_uint_32 red = (s0 + s1 + 65536) & 0xffff;
png_uint_32 blue = (s2 + s1 + 65536) & 0xffff;
*(rp ) = (png_byte)((red >> 8) & 0xff);
@@ -534,6 +539,7 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
png_error(png_ptr, "Invalid attempt to read row data");
/* Fill the row with IDAT data: */
+ png_ptr->row_buf[0]=255; /* to force error if no data was found */
png_read_IDAT_data(png_ptr, png_ptr->row_buf, row_info.rowbytes + 1);
if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
@@ -562,7 +568,11 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
#endif
#ifdef PNG_READ_TRANSFORMS_SUPPORTED
- if (png_ptr->transformations)
+ if (png_ptr->transformations
+# ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ || png_ptr->num_palette_max >= 0
+# endif
+ )
png_do_read_transformations(png_ptr, &row_info);
#endif
@@ -779,7 +789,7 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
/* Report invalid palette index; added at libng-1.5.10 */
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- png_ptr->num_palette_max > png_ptr->num_palette)
+ png_ptr->num_palette_max >= png_ptr->num_palette)
png_benign_error(png_ptr, "Read palette index exceeding num_palette");
#endif
@@ -842,6 +852,11 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
+#ifdef PNG_READ_eXIf_SUPPORTED
+ else if (chunk_name == png_eXIf)
+ png_handle_eXIf(png_ptr, info_ptr, length);
+#endif
+
#ifdef PNG_READ_gAMA_SUPPORTED
else if (chunk_name == png_gAMA)
png_handle_gAMA(png_ptr, info_ptr, length);
@@ -983,6 +998,12 @@ png_read_destroy(png_structrp png_ptr)
png_ptr->chunk_list = NULL;
#endif
+#if defined(PNG_READ_EXPAND_SUPPORTED) && \
+ defined(PNG_ARM_NEON_IMPLEMENTATION)
+ png_free(png_ptr, png_ptr->riffled_palette);
+ png_ptr->riffled_palette = NULL;
+#endif
+
/* NOTE: the 'setjmp' buffer may still be allocated and the memory and error
* callbacks are still set at this point. They are required to complete the
* destruction of the png_struct itself.
@@ -1032,6 +1053,8 @@ void PNGAPI
png_read_png(png_structrp png_ptr, png_inforp info_ptr,
int transforms, voidp params)
{
+ png_debug(1, "in png_read_png");
+
if (png_ptr == NULL || info_ptr == NULL)
return;
@@ -1393,7 +1416,9 @@ png_image_read_header(png_voidp argument)
png_structrp png_ptr = image->opaque->png_ptr;
png_inforp info_ptr = image->opaque->info_ptr;
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
png_set_benign_errors(png_ptr, 1/*warn*/);
+#endif
png_read_info(png_ptr, info_ptr);
/* Do this the fast way; just read directly out of png_struct. */
@@ -1431,7 +1456,7 @@ png_image_read_header(png_voidp argument)
break;
case PNG_COLOR_TYPE_PALETTE:
- cmap_entries = png_ptr->num_palette;
+ cmap_entries = (png_uint_32)png_ptr->num_palette;
break;
default:
@@ -1519,7 +1544,7 @@ png_image_begin_read_from_file(png_imagep image, const char *file_name)
#endif /* STDIO */
static void PNGCBAPI
-png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need)
+png_image_memory_read(png_structp png_ptr, png_bytep out, size_t need)
{
if (png_ptr != NULL)
{
@@ -1530,7 +1555,7 @@ png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need)
if (cp != NULL)
{
png_const_bytep memory = cp->memory;
- png_size_t size = cp->size;
+ size_t size = cp->size;
if (memory != NULL && size >= need)
{
@@ -1549,7 +1574,7 @@ png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need)
}
int PNGAPI png_image_begin_read_from_memory(png_imagep image,
- png_const_voidp memory, png_size_t size)
+ png_const_voidp memory, size_t size)
{
if (image != NULL && image->version == PNG_IMAGE_VERSION)
{
@@ -1608,7 +1633,7 @@ png_image_skip_unused_chunks(png_structrp png_ptr)
* errors (which are unfortunately quite common.)
*/
{
- static PNG_CONST png_byte chunks_to_process[] = {
+ static const png_byte chunks_to_process[] = {
98, 75, 71, 68, '\0', /* bKGD */
99, 72, 82, 77, '\0', /* cHRM */
103, 65, 77, 65, '\0', /* gAMA */
@@ -1745,9 +1770,9 @@ png_create_colormap_entry(png_image_read_control *display,
png_uint_32 alpha, int encoding)
{
png_imagep image = display->image;
- const int output_encoding = (image->format & PNG_FORMAT_FLAG_LINEAR) != 0 ?
+ int output_encoding = (image->format & PNG_FORMAT_FLAG_LINEAR) != 0 ?
P_LINEAR : P_sRGB;
- const int convert_to_Y = (image->format & PNG_FORMAT_FLAG_COLOR) == 0 &&
+ int convert_to_Y = (image->format & PNG_FORMAT_FLAG_COLOR) == 0 &&
(red != green || green != blue);
if (ip > 255)
@@ -1856,13 +1881,13 @@ png_create_colormap_entry(png_image_read_control *display,
/* Store the value. */
{
# ifdef PNG_FORMAT_AFIRST_SUPPORTED
- const int afirst = (image->format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
+ int afirst = (image->format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
(image->format & PNG_FORMAT_FLAG_ALPHA) != 0;
# else
# define afirst 0
# endif
# ifdef PNG_FORMAT_BGR_SUPPORTED
- const int bgr = (image->format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0;
+ int bgr = (image->format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0;
# else
# define bgr 0
# endif
@@ -1881,7 +1906,7 @@ png_create_colormap_entry(png_image_read_control *display,
{
case 4:
entry[afirst ? 0 : 3] = (png_uint_16)alpha;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 3:
if (alpha < 65535)
@@ -1903,7 +1928,7 @@ png_create_colormap_entry(png_image_read_control *display,
case 2:
entry[1 ^ afirst] = (png_uint_16)alpha;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 1:
if (alpha < 65535)
@@ -1932,6 +1957,7 @@ png_create_colormap_entry(png_image_read_control *display,
{
case 4:
entry[afirst ? 0 : 3] = (png_byte)alpha;
+ /* FALLTHROUGH */
case 3:
entry[afirst + (2 ^ bgr)] = (png_byte)blue;
entry[afirst + 1] = (png_byte)green;
@@ -1940,6 +1966,7 @@ png_create_colormap_entry(png_image_read_control *display,
case 2:
entry[1 ^ afirst] = (png_byte)alpha;
+ /* FALLTHROUGH */
case 1:
entry[afirst] = (png_byte)green;
break;
@@ -1966,7 +1993,7 @@ make_gray_file_colormap(png_image_read_control *display)
for (i=0; i<256; ++i)
png_create_colormap_entry(display, i, i, i, i, 255, P_FILE);
- return i;
+ return (int)i;
}
static int
@@ -1977,7 +2004,7 @@ make_gray_colormap(png_image_read_control *display)
for (i=0; i<256; ++i)
png_create_colormap_entry(display, i, i, i, i, 255, P_sRGB);
- return i;
+ return (int)i;
}
#define PNG_GRAY_COLORMAP_ENTRIES 256
@@ -2031,7 +2058,7 @@ make_ga_colormap(png_image_read_control *display)
P_sRGB);
}
- return i;
+ return (int)i;
}
#define PNG_GA_COLORMAP_ENTRIES 256
@@ -2056,7 +2083,7 @@ make_rgb_colormap(png_image_read_control *display)
}
}
- return i;
+ return (int)i;
}
#define PNG_RGB_COLORMAP_ENTRIES 216
@@ -2070,11 +2097,11 @@ png_image_read_colormap(png_voidp argument)
{
png_image_read_control *display =
png_voidcast(png_image_read_control*, argument);
- const png_imagep image = display->image;
+ png_imagep image = display->image;
- const png_structrp png_ptr = image->opaque->png_ptr;
- const png_uint_32 output_format = image->format;
- const int output_encoding = (output_format & PNG_FORMAT_FLAG_LINEAR) != 0 ?
+ png_structrp png_ptr = image->opaque->png_ptr;
+ png_uint_32 output_format = image->format;
+ int output_encoding = (output_format & PNG_FORMAT_FLAG_LINEAR) != 0 ?
P_LINEAR : P_sRGB;
unsigned int cmap_entries;
@@ -2249,7 +2276,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
png_error(png_ptr, "gray[16] color-map: too few entries");
- cmap_entries = make_gray_colormap(display);
+ cmap_entries = (unsigned int)make_gray_colormap(display);
if (png_ptr->num_trans > 0)
{
@@ -2347,7 +2374,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
png_error(png_ptr, "gray+alpha color-map: too few entries");
- cmap_entries = make_ga_colormap(display);
+ cmap_entries = (unsigned int)make_ga_colormap(display);
background_index = PNG_CMAP_GA_BACKGROUND;
output_processing = PNG_CMAP_GA;
@@ -2381,7 +2408,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
png_error(png_ptr, "gray-alpha color-map: too few entries");
- cmap_entries = make_gray_colormap(display);
+ cmap_entries = (unsigned int)make_gray_colormap(display);
if (output_encoding == P_LINEAR)
{
@@ -2520,7 +2547,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
png_error(png_ptr, "rgb[ga] color-map: too few entries");
- cmap_entries = make_ga_colormap(display);
+ cmap_entries = (unsigned int)make_ga_colormap(display);
background_index = PNG_CMAP_GA_BACKGROUND;
output_processing = PNG_CMAP_GA;
}
@@ -2546,12 +2573,12 @@ png_image_read_colormap(png_voidp argument)
png_ptr->num_trans > 0) &&
png_gamma_not_sRGB(png_ptr->colorspace.gamma) != 0)
{
- cmap_entries = make_gray_file_colormap(display);
+ cmap_entries = (unsigned int)make_gray_file_colormap(display);
data_encoding = P_FILE;
}
else
- cmap_entries = make_gray_colormap(display);
+ cmap_entries = (unsigned int)make_gray_colormap(display);
/* But if the input has alpha or transparency it must be removed
*/
@@ -2639,7 +2666,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries)
png_error(png_ptr, "rgb+alpha color-map: too few entries");
- cmap_entries = make_rgb_colormap(display);
+ cmap_entries = (unsigned int)make_rgb_colormap(display);
/* Add a transparent entry. */
png_create_colormap_entry(display, cmap_entries, 255, 255,
@@ -2688,7 +2715,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries)
png_error(png_ptr, "rgb-alpha color-map: too few entries");
- cmap_entries = make_rgb_colormap(display);
+ cmap_entries = (unsigned int)make_rgb_colormap(display);
png_create_colormap_entry(display, cmap_entries, back_r,
back_g, back_b, 0/*unused*/, output_encoding);
@@ -2773,7 +2800,7 @@ png_image_read_colormap(png_voidp argument)
if (PNG_RGB_COLORMAP_ENTRIES > image->colormap_entries)
png_error(png_ptr, "rgb color-map: too few entries");
- cmap_entries = make_rgb_colormap(display);
+ cmap_entries = (unsigned int)make_rgb_colormap(display);
output_processing = PNG_CMAP_RGB;
}
}
@@ -2787,7 +2814,7 @@ png_image_read_colormap(png_voidp argument)
unsigned int num_trans = png_ptr->num_trans;
png_const_bytep trans = num_trans > 0 ? png_ptr->trans_alpha : NULL;
png_const_colorp colormap = png_ptr->palette;
- const int do_background = trans != NULL &&
+ int do_background = trans != NULL &&
(output_format & PNG_FORMAT_FLAG_ALPHA) == 0;
unsigned int i;
@@ -2797,11 +2824,11 @@ png_image_read_colormap(png_voidp argument)
output_processing = PNG_CMAP_NONE;
data_encoding = P_FILE; /* Don't change from color-map indices */
- cmap_entries = png_ptr->num_palette;
+ cmap_entries = (unsigned int)png_ptr->num_palette;
if (cmap_entries > 256)
cmap_entries = 256;
- if (cmap_entries > image->colormap_entries)
+ if (cmap_entries > (unsigned int)image->colormap_entries)
png_error(png_ptr, "palette color-map: too few entries");
for (i=0; i < cmap_entries; ++i)
@@ -2859,7 +2886,7 @@ png_image_read_colormap(png_voidp argument)
case P_sRGB:
/* Change to 8-bit sRGB */
png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, PNG_GAMMA_sRGB);
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case P_FILE:
if (png_ptr->bit_depth > 8)
@@ -2913,7 +2940,7 @@ png_image_read_colormap(png_voidp argument)
png_error(png_ptr, "bad background index (internal error)");
}
- display->colormap_processing = output_processing;
+ display->colormap_processing = (int)output_processing;
return 1/*ok*/;
}
@@ -3177,8 +3204,7 @@ png_image_read_colormapped(png_voidp argument)
image->colormap_entries == 244 /* 216 + 1 + 27 */)
break;
- /* goto bad_output; */
- /* FALL THROUGH */
+ goto bad_output;
default:
bad_output:
@@ -3222,14 +3248,14 @@ png_image_read_colormapped(png_voidp argument)
else
{
- png_alloc_size_t row_bytes = display->row_bytes;
+ png_alloc_size_t row_bytes = (png_alloc_size_t)display->row_bytes;
while (--passes >= 0)
{
png_uint_32 y = image->height;
png_bytep row = png_voidcast(png_bytep, display->first_row);
- while (y-- > 0)
+ for (; y > 0; --y)
{
png_read_row(png_ptr, row, NULL);
row += row_bytes;
@@ -3432,7 +3458,6 @@ png_image_read_background(png_voidp argument)
for (pass = 0; pass < passes; ++pass)
{
- png_bytep row = png_voidcast(png_bytep, display->first_row);
unsigned int startx, stepx, stepy;
png_uint_32 y;
@@ -3537,8 +3562,6 @@ png_image_read_background(png_voidp argument)
inrow += 2; /* gray and alpha channel */
}
-
- row += display->row_bytes;
}
}
}
@@ -3557,8 +3580,9 @@ png_image_read_background(png_voidp argument)
* stride which was multiplied by 2 (below) to get row_bytes.
*/
ptrdiff_t step_row = display->row_bytes / 2;
- int preserve_alpha = (image->format & PNG_FORMAT_FLAG_ALPHA) != 0;
- unsigned int outchannels = 1+preserve_alpha;
+ unsigned int preserve_alpha = (image->format &
+ PNG_FORMAT_FLAG_ALPHA) != 0;
+ unsigned int outchannels = 1U+preserve_alpha;
int swap_alpha = 0;
# ifdef PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED
@@ -3745,6 +3769,12 @@ png_image_read_direct(png_voidp argument)
output_gamma = PNG_DEFAULT_sRGB;
}
+ if ((change & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0)
+ {
+ mode = PNG_ALPHA_OPTIMIZED;
+ change &= ~PNG_FORMAT_FLAG_ASSOCIATED_ALPHA;
+ }
+
/* If 'do_local_background' is set check for the presence of gamma
* correction; this is part of the work-round for the libpng bug
* described above.
@@ -3925,7 +3955,7 @@ png_image_read_direct(png_voidp argument)
*/
if (linear != 0)
{
- PNG_CONST png_uint_16 le = 0x0001;
+ png_uint_16 le = 0x0001;
if ((*(png_const_bytep) & le) != 0)
png_set_swap(png_ptr);
@@ -3970,6 +4000,10 @@ png_image_read_direct(png_voidp argument)
else if (do_local_compose != 0) /* internal error */
png_error(png_ptr, "png_image_read: alpha channel lost");
+ if ((format & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0) {
+ info_format |= PNG_FORMAT_FLAG_ASSOCIATED_ALPHA;
+ }
+
if (info_ptr->bit_depth == 16)
info_format |= PNG_FORMAT_FLAG_LINEAR;
@@ -4055,14 +4089,14 @@ png_image_read_direct(png_voidp argument)
else
{
- png_alloc_size_t row_bytes = display->row_bytes;
+ png_alloc_size_t row_bytes = (png_alloc_size_t)display->row_bytes;
while (--passes >= 0)
{
png_uint_32 y = image->height;
png_bytep row = png_voidcast(png_bytep, display->first_row);
- while (y-- > 0)
+ for (; y > 0; --y)
{
png_read_row(png_ptr, row, NULL);
row += row_bytes;
@@ -4083,7 +4117,7 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
* original PNG format because it may not occur in the output PNG format
* and libpng deals with the issues of reading the original.
*/
- const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
+ unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
/* The following checks just the 'row_stride' calculation to ensure it
* fits in a signed 32-bit value. Because channels/components can be
@@ -4091,19 +4125,19 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
* bits; this is just to verify that the 'row_stride' argument can be
* represented.
*/
- if (image->width <= 0x7FFFFFFFU/channels) /* no overflow */
+ if (image->width <= 0x7fffffffU/channels) /* no overflow */
{
png_uint_32 check;
- const png_uint_32 png_row_stride = image->width * channels;
+ png_uint_32 png_row_stride = image->width * channels;
if (row_stride == 0)
row_stride = (png_int_32)/*SAFE*/png_row_stride;
if (row_stride < 0)
- check = -row_stride;
+ check = (png_uint_32)(-row_stride);
else
- check = row_stride;
+ check = (png_uint_32)row_stride;
/* This verifies 'check', the absolute value of the actual stride
* passed in and detects overflow in the application calculation (i.e.
@@ -4125,10 +4159,10 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
*
* NOTE: this will be changed in 1.7 because PNG_IMAGE_BUFFER_SIZE
* will be changed to use png_alloc_size_t; bigger images can be
- * accomodated on 64-bit systems.
+ * accommodated on 64-bit systems.
*/
if (image->height <=
- 0xFFFFFFFFU/PNG_IMAGE_PIXEL_COMPONENT_SIZE(image->format)/check)
+ 0xffffffffU/PNG_IMAGE_PIXEL_COMPONENT_SIZE(image->format)/check)
{
if ((image->format & PNG_FORMAT_FLAG_COLORMAP) == 0 ||
(image->colormap_entries > 0 && colormap != NULL))
diff --git a/thirdparty/libpng/pngrio.c b/thirdparty/libpng/pngrio.c
index 7e26e855c..794635810 100644
--- a/thirdparty/libpng/pngrio.c
+++ b/thirdparty/libpng/pngrio.c
@@ -1,10 +1,10 @@
/* pngrio.c - functions for data input
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -29,7 +29,7 @@
* to read more than 64K on a 16-bit machine.
*/
void /* PRIVATE */
-png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length)
+png_read_data(png_structrp png_ptr, png_bytep data, size_t length)
{
png_debug1(4, "reading %d bytes", (int)length);
@@ -47,14 +47,14 @@ png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length)
* than changing the library.
*/
void PNGCBAPI
-png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
+png_default_read_data(png_structp png_ptr, png_bytep data, size_t length)
{
- png_size_t check;
+ size_t check;
if (png_ptr == NULL)
return;
- /* fread() returns 0 on error, so it is OK to store this in a png_size_t
+ /* fread() returns 0 on error, so it is OK to store this in a size_t
* instead of an int, which is what fread() actually returns.
*/
check = fread(data, 1, length, png_voidcast(png_FILE_p, png_ptr->io_ptr));
diff --git a/thirdparty/libpng/pngrtran.c b/thirdparty/libpng/pngrtran.c
index 748ffb3ed..1526123e0 100644
--- a/thirdparty/libpng/pngrtran.c
+++ b/thirdparty/libpng/pngrtran.c
@@ -1,10 +1,10 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -18,6 +18,17 @@
#include "pngpriv.h"
+#ifdef PNG_ARM_NEON_IMPLEMENTATION
+# if PNG_ARM_NEON_IMPLEMENTATION == 1
+# define PNG_ARM_NEON_INTRINSICS_AVAILABLE
+# if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
+# include
+# else
+# include
+# endif
+# endif
+#endif
+
#ifdef PNG_READ_SUPPORTED
/* Set the action on getting a CRC error for an ancillary or critical chunk. */
@@ -49,6 +60,7 @@ png_set_crc_action(png_structrp png_ptr, int crit_action, int ancil_action)
case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
png_warning(png_ptr,
"Can't discard critical data on CRC error");
+ /* FALLTHROUGH */
case PNG_CRC_ERROR_QUIT: /* Error/quit */
case PNG_CRC_DEFAULT:
@@ -278,21 +290,20 @@ png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
int compose = 0;
png_fixed_point file_gamma;
- png_debug(1, "in png_set_alpha_mode");
+ png_debug(1, "in png_set_alpha_mode_fixed");
if (png_rtran_ok(png_ptr, 0) == 0)
return;
output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
- /* Validate the value to ensure it is in a reasonable range. The value
+ /* Validate the value to ensure it is in a reasonable range. The value
* is expected to be 1 or greater, but this range test allows for some
- * viewing correction values. The intent is to weed out users of this API
- * who use the inverse of the gamma value accidentally! Since some of these
- * values are reasonable this may have to be changed:
+ * viewing correction values. The intent is to weed out the API users
+ * who might use the inverse of the gamma value accidentally!
*
- * 1.6.x: changed from 0.07..3 to 0.01..100 (to accomodate the optimal 16-bit
- * gamma of 36, and its reciprocal.)
+ * In libpng 1.6.0, we changed from 0.07..3 to 0.01..100, to accommodate
+ * the optimal 16-bit gamma of 36 and its reciprocal.
*/
if (output_gamma < 1000 || output_gamma > 10000000)
png_error(png_ptr, "output gamma out of expected range");
@@ -429,7 +440,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
int i;
png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
+ (png_alloc_size_t)num_palette);
for (i = 0; i < num_palette; i++)
png_ptr->quantize_index[i] = (png_byte)i;
}
@@ -446,7 +457,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
/* Initialize an array to sort colors */
png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
+ (png_alloc_size_t)num_palette);
/* Initialize the quantize_sort array */
for (i = 0; i < num_palette; i++)
@@ -580,9 +591,9 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
/* Initialize palette index arrays */
png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
+ (png_alloc_size_t)num_palette);
png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
+ (png_alloc_size_t)num_palette);
/* Initialize the sort array */
for (i = 0; i < num_palette; i++)
@@ -591,7 +602,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
png_ptr->palette_to_index[i] = (png_byte)i;
}
- hash = (png_dsortpp)png_calloc(png_ptr, (png_uint_32)(769 *
+ hash = (png_dsortpp)png_calloc(png_ptr, (png_alloc_size_t)(769 *
(sizeof (png_dsortp))));
num_new_palette = num_palette;
@@ -622,7 +633,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
{
t = (png_dsortp)png_malloc_warn(png_ptr,
- (png_uint_32)(sizeof (png_dsort)));
+ (png_alloc_size_t)(sizeof (png_dsort)));
if (t == NULL)
break;
@@ -744,15 +755,14 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
int num_red = (1 << PNG_QUANTIZE_RED_BITS);
int num_green = (1 << PNG_QUANTIZE_GREEN_BITS);
int num_blue = (1 << PNG_QUANTIZE_BLUE_BITS);
- png_size_t num_entries = ((png_size_t)1 << total_bits);
+ size_t num_entries = ((size_t)1 << total_bits);
png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr,
- (png_uint_32)(num_entries * (sizeof (png_byte))));
+ (png_alloc_size_t)(num_entries));
- distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
- (sizeof (png_byte))));
+ distance = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)num_entries);
- memset(distance, 0xff, num_entries * (sizeof (png_byte)));
+ memset(distance, 0xff, num_entries);
for (i = 0; i < num_palette; i++)
{
@@ -956,7 +966,7 @@ void PNGFAPI
png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
png_fixed_point red, png_fixed_point green)
{
- png_debug(1, "in png_set_rgb_to_gray");
+ png_debug(1, "in png_set_rgb_to_gray_fixed");
/* Need the IHDR here because of the check on color_type below. */
/* TODO: fix this */
@@ -1168,20 +1178,20 @@ png_init_palette_transformations(png_structrp png_ptr)
png_ptr->palette[png_ptr->background.index].blue;
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
- if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0)
- {
- if ((png_ptr->transformations & PNG_EXPAND_tRNS) == 0)
- {
- /* Invert the alpha channel (in tRNS) unless the pixels are
- * going to be expanded, in which case leave it for later
- */
- int i, istop = png_ptr->num_trans;
-
- for (i=0; itrans_alpha[i] = (png_byte)(255 -
- png_ptr->trans_alpha[i]);
- }
- }
+ if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0)
+ {
+ if ((png_ptr->transformations & PNG_EXPAND_tRNS) == 0)
+ {
+ /* Invert the alpha channel (in tRNS) unless the pixels are
+ * going to be expanded, in which case leave it for later
+ */
+ int i, istop = png_ptr->num_trans;
+
+ for (i = 0; i < istop; i++)
+ png_ptr->trans_alpha[i] =
+ (png_byte)(255 - png_ptr->trans_alpha[i]);
+ }
+ }
#endif /* READ_INVERT_ALPHA */
}
} /* background expand and (therefore) no alpha association. */
@@ -1253,7 +1263,7 @@ png_init_rgb_transformations(png_structrp png_ptr)
default:
case 8:
- /* FALL THROUGH (Already 8 bits) */
+ /* FALLTHROUGH */ /* (Already 8 bits) */
case 16:
/* Already a full 16 bits */
@@ -1314,7 +1324,7 @@ png_init_read_transformations(png_structrp png_ptr)
else if (png_ptr->screen_gamma != 0)
/* The converse - assume the file matches the screen, note that this
- * perhaps undesireable default can (from 1.5.4) be changed by calling
+ * perhaps undesirable default can (from 1.5.4) be changed by calling
* png_set_alpha_mode (even if the alpha handling mode isn't required
* or isn't changed from the default.)
*/
@@ -1882,7 +1892,7 @@ png_init_read_transformations(png_structrp png_ptr)
png_ptr->transformations &= ~PNG_SHIFT;
- /* significant bits can be in the range 1 to 7 for a meaninful result, if
+ /* significant bits can be in the range 1 to 7 for a meaningful result, if
* the number of significant bits is 0 then no shift is done (this is an
* error condition which is silently ignored.)
*/
@@ -2148,9 +2158,9 @@ png_do_unpack(png_row_infop row_info, png_bytep row)
{
case 1:
{
- png_bytep sp = row + (png_size_t)((row_width - 1) >> 3);
- png_bytep dp = row + (png_size_t)row_width - 1;
- png_uint_32 shift = 7 - (int)((row_width + 7) & 0x07);
+ png_bytep sp = row + (size_t)((row_width - 1) >> 3);
+ png_bytep dp = row + (size_t)row_width - 1;
+ png_uint_32 shift = 7U - ((row_width + 7U) & 0x07);
for (i = 0; i < row_width; i++)
{
*dp = (png_byte)((*sp >> shift) & 0x01);
@@ -2172,9 +2182,9 @@ png_do_unpack(png_row_infop row_info, png_bytep row)
case 2:
{
- png_bytep sp = row + (png_size_t)((row_width - 1) >> 2);
- png_bytep dp = row + (png_size_t)row_width - 1;
- png_uint_32 shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
+ png_bytep sp = row + (size_t)((row_width - 1) >> 2);
+ png_bytep dp = row + (size_t)row_width - 1;
+ png_uint_32 shift = ((3U - ((row_width + 3U) & 0x03)) << 1);
for (i = 0; i < row_width; i++)
{
*dp = (png_byte)((*sp >> shift) & 0x03);
@@ -2195,9 +2205,9 @@ png_do_unpack(png_row_infop row_info, png_bytep row)
case 4:
{
- png_bytep sp = row + (png_size_t)((row_width - 1) >> 1);
- png_bytep dp = row + (png_size_t)row_width - 1;
- png_uint_32 shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
+ png_bytep sp = row + (size_t)((row_width - 1) >> 1);
+ png_bytep dp = row + (size_t)row_width - 1;
+ png_uint_32 shift = ((1U - ((row_width + 1U) & 0x01)) << 2);
for (i = 0; i < row_width; i++)
{
*dp = (png_byte)((*sp >> shift) & 0x0f);
@@ -2460,95 +2470,94 @@ png_do_chop(png_row_infop row_info, png_bytep row)
static void
png_do_read_swap_alpha(png_row_infop row_info, png_bytep row)
{
+ png_uint_32 row_width = row_info->width;
+
png_debug(1, "in png_do_read_swap_alpha");
+ if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
- png_uint_32 row_width = row_info->width;
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ /* This converts from RGBA to ARGB */
+ if (row_info->bit_depth == 8)
{
- /* This converts from RGBA to ARGB */
- if (row_info->bit_depth == 8)
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save;
- png_uint_32 i;
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save;
+ png_uint_32 i;
- for (i = 0; i < row_width; i++)
- {
- save = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save;
- }
+ for (i = 0; i < row_width; i++)
+ {
+ save = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save;
}
+ }
#ifdef PNG_READ_16BIT_SUPPORTED
- /* This converts from RRGGBBAA to AARRGGBB */
- else
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save[2];
- png_uint_32 i;
+ /* This converts from RRGGBBAA to AARRGGBB */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save[2];
+ png_uint_32 i;
- for (i = 0; i < row_width; i++)
- {
- save[0] = *(--sp);
- save[1] = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save[0];
- *(--dp) = save[1];
- }
+ for (i = 0; i < row_width; i++)
+ {
+ save[0] = *(--sp);
+ save[1] = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save[0];
+ *(--dp) = save[1];
}
-#endif
}
+#endif
+ }
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ {
+ /* This converts from GA to AG */
+ if (row_info->bit_depth == 8)
{
- /* This converts from GA to AG */
- if (row_info->bit_depth == 8)
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save;
- png_uint_32 i;
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save;
+ png_uint_32 i;
- for (i = 0; i < row_width; i++)
- {
- save = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save;
- }
+ for (i = 0; i < row_width; i++)
+ {
+ save = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save;
}
+ }
#ifdef PNG_READ_16BIT_SUPPORTED
- /* This converts from GGAA to AAGG */
- else
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save[2];
- png_uint_32 i;
+ /* This converts from GGAA to AAGG */
+ else
+ {
+ png_bytep sp = row + row_info->rowbytes;
+ png_bytep dp = sp;
+ png_byte save[2];
+ png_uint_32 i;
- for (i = 0; i < row_width; i++)
- {
- save[0] = *(--sp);
- save[1] = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save[0];
- *(--dp) = save[1];
- }
+ for (i = 0; i < row_width; i++)
+ {
+ save[0] = *(--sp);
+ save[1] = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = *(--sp);
+ *(--dp) = save[0];
+ *(--dp) = save[1];
}
-#endif
}
+#endif
}
}
#endif
@@ -2678,8 +2687,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
if ((flags & PNG_FLAG_FILLER_AFTER) != 0)
{
/* This changes the data from G to GX */
- png_bytep sp = row + (png_size_t)row_width;
- png_bytep dp = sp + (png_size_t)row_width;
+ png_bytep sp = row + (size_t)row_width;
+ png_bytep dp = sp + (size_t)row_width;
for (i = 1; i < row_width; i++)
{
*(--dp) = lo_filler;
@@ -2694,8 +2703,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
else
{
/* This changes the data from G to XG */
- png_bytep sp = row + (png_size_t)row_width;
- png_bytep dp = sp + (png_size_t)row_width;
+ png_bytep sp = row + (size_t)row_width;
+ png_bytep dp = sp + (size_t)row_width;
for (i = 0; i < row_width; i++)
{
*(--dp) = *(--sp);
@@ -2713,8 +2722,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
if ((flags & PNG_FLAG_FILLER_AFTER) != 0)
{
/* This changes the data from GG to GGXX */
- png_bytep sp = row + (png_size_t)row_width * 2;
- png_bytep dp = sp + (png_size_t)row_width * 2;
+ png_bytep sp = row + (size_t)row_width * 2;
+ png_bytep dp = sp + (size_t)row_width * 2;
for (i = 1; i < row_width; i++)
{
*(--dp) = lo_filler;
@@ -2732,8 +2741,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
else
{
/* This changes the data from GG to XXGG */
- png_bytep sp = row + (png_size_t)row_width * 2;
- png_bytep dp = sp + (png_size_t)row_width * 2;
+ png_bytep sp = row + (size_t)row_width * 2;
+ png_bytep dp = sp + (size_t)row_width * 2;
for (i = 0; i < row_width; i++)
{
*(--dp) = *(--sp);
@@ -2755,8 +2764,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
if ((flags & PNG_FLAG_FILLER_AFTER) != 0)
{
/* This changes the data from RGB to RGBX */
- png_bytep sp = row + (png_size_t)row_width * 3;
- png_bytep dp = sp + (png_size_t)row_width;
+ png_bytep sp = row + (size_t)row_width * 3;
+ png_bytep dp = sp + (size_t)row_width;
for (i = 1; i < row_width; i++)
{
*(--dp) = lo_filler;
@@ -2773,8 +2782,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
else
{
/* This changes the data from RGB to XRGB */
- png_bytep sp = row + (png_size_t)row_width * 3;
- png_bytep dp = sp + (png_size_t)row_width;
+ png_bytep sp = row + (size_t)row_width * 3;
+ png_bytep dp = sp + (size_t)row_width;
for (i = 0; i < row_width; i++)
{
*(--dp) = *(--sp);
@@ -2794,8 +2803,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
if ((flags & PNG_FLAG_FILLER_AFTER) != 0)
{
/* This changes the data from RRGGBB to RRGGBBXX */
- png_bytep sp = row + (png_size_t)row_width * 6;
- png_bytep dp = sp + (png_size_t)row_width * 2;
+ png_bytep sp = row + (size_t)row_width * 6;
+ png_bytep dp = sp + (size_t)row_width * 2;
for (i = 1; i < row_width; i++)
{
*(--dp) = lo_filler;
@@ -2817,8 +2826,8 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
else
{
/* This changes the data from RRGGBB to XXRRGGBB */
- png_bytep sp = row + (png_size_t)row_width * 6;
- png_bytep dp = sp + (png_size_t)row_width * 2;
+ png_bytep sp = row + (size_t)row_width * 6;
+ png_bytep dp = sp + (size_t)row_width * 2;
for (i = 0; i < row_width; i++)
{
*(--dp) = *(--sp);
@@ -2859,8 +2868,8 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
if (row_info->bit_depth == 8)
{
/* This changes G to RGB */
- png_bytep sp = row + (png_size_t)row_width - 1;
- png_bytep dp = sp + (png_size_t)row_width * 2;
+ png_bytep sp = row + (size_t)row_width - 1;
+ png_bytep dp = sp + (size_t)row_width * 2;
for (i = 0; i < row_width; i++)
{
*(dp--) = *sp;
@@ -2872,8 +2881,8 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
else
{
/* This changes GG to RRGGBB */
- png_bytep sp = row + (png_size_t)row_width * 2 - 1;
- png_bytep dp = sp + (png_size_t)row_width * 4;
+ png_bytep sp = row + (size_t)row_width * 2 - 1;
+ png_bytep dp = sp + (size_t)row_width * 4;
for (i = 0; i < row_width; i++)
{
*(dp--) = *sp;
@@ -2891,8 +2900,8 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
if (row_info->bit_depth == 8)
{
/* This changes GA to RGBA */
- png_bytep sp = row + (png_size_t)row_width * 2 - 1;
- png_bytep dp = sp + (png_size_t)row_width * 2;
+ png_bytep sp = row + (size_t)row_width * 2 - 1;
+ png_bytep dp = sp + (size_t)row_width * 2;
for (i = 0; i < row_width; i++)
{
*(dp--) = *(sp--);
@@ -2905,8 +2914,8 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
else
{
/* This changes GGAA to RRGGBBAA */
- png_bytep sp = row + (png_size_t)row_width * 4 - 1;
- png_bytep dp = sp + (png_size_t)row_width * 4;
+ png_bytep sp = row + (size_t)row_width * 4 - 1;
+ png_bytep dp = sp + (size_t)row_width * 4;
for (i = 0; i < row_width; i++)
{
*(dp--) = *(sp--);
@@ -2934,7 +2943,7 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
* using the equation given in Poynton's ColorFAQ of 1998-01-04 at
* (THIS LINK IS DEAD June 2008 but
* versions dated 1998 through November 2002 have been archived at
- * http://web.archive.org/web/20000816232553/http://www.inforamp.net/
+ * https://web.archive.org/web/20000816232553/www.inforamp.net/
* ~poynton/notes/colour_and_gamma/ColorFAQ.txt )
* Charles Poynton poynton at poynton.com
*
@@ -2977,14 +2986,13 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
* values this results in an implicit assumption that the original PNG RGB
* values were linear.
*
- * Other integer coefficents can be used via png_set_rgb_to_gray(). Because
+ * Other integer coefficients can be used via png_set_rgb_to_gray(). Because
* the API takes just red and green coefficients the blue coefficient is
* calculated to make the sum 32768. This will result in different rounding
* to that used above.
*/
static int
png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row)
-
{
int rgb_error = 0;
@@ -2993,12 +3001,11 @@ png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row)
if ((row_info->color_type & PNG_COLOR_MASK_PALETTE) == 0 &&
(row_info->color_type & PNG_COLOR_MASK_COLOR) != 0)
{
- PNG_CONST png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
- PNG_CONST png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
- PNG_CONST png_uint_32 bc = 32768 - rc - gc;
- PNG_CONST png_uint_32 row_width = row_info->width;
- PNG_CONST int have_alpha =
- (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0;
+ png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
+ png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
+ png_uint_32 bc = 32768 - rc - gc;
+ png_uint_32 row_width = row_info->width;
+ int have_alpha = (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0;
if (row_info->bit_depth == 8)
{
@@ -3206,715 +3213,718 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
png_debug(1, "in png_do_compose");
+ switch (row_info->color_type)
{
- switch (row_info->color_type)
+ case PNG_COLOR_TYPE_GRAY:
{
- case PNG_COLOR_TYPE_GRAY:
+ switch (row_info->bit_depth)
{
- switch (row_info->bit_depth)
+ case 1:
+ {
+ sp = row;
+ shift = 7;
+ for (i = 0; i < row_width; i++)
+ {
+ if ((png_uint_16)((*sp >> shift) & 0x01)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0x7f7f >> (7 - shift));
+ tmp |=
+ (unsigned int)(png_ptr->background.gray << shift);
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ if (shift == 0)
+ {
+ shift = 7;
+ sp++;
+ }
+
+ else
+ shift--;
+ }
+ break;
+ }
+
+ case 2:
{
- case 1:
+#ifdef PNG_READ_GAMMA_SUPPORTED
+ if (gamma_table != NULL)
{
sp = row;
- shift = 7;
+ shift = 6;
for (i = 0; i < row_width; i++)
{
- if ((png_uint_16)((*sp >> shift) & 0x01)
- == png_ptr->trans_color.gray)
+ if ((png_uint_16)((*sp >> shift) & 0x03)
+ == png_ptr->trans_color.gray)
+ {
+ unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
+ tmp |=
+ (unsigned int)png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
+ }
+
+ else
{
- unsigned int tmp = *sp & (0x7f7f >> (7 - shift));
- tmp |= png_ptr->background.gray << shift;
+ unsigned int p = (*sp >> shift) & 0x03;
+ unsigned int g = (gamma_table [p | (p << 2) |
+ (p << 4) | (p << 6)] >> 6) & 0x03;
+ unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
+ tmp |= (unsigned int)(g << shift);
*sp = (png_byte)(tmp & 0xff);
}
if (shift == 0)
{
- shift = 7;
+ shift = 6;
sp++;
}
else
- shift--;
+ shift -= 2;
}
- break;
}
- case 2:
+ else
+#endif
{
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
+ sp = row;
+ shift = 6;
+ for (i = 0; i < row_width; i++)
{
- sp = row;
- shift = 6;
- for (i = 0; i < row_width; i++)
+ if ((png_uint_16)((*sp >> shift) & 0x03)
+ == png_ptr->trans_color.gray)
{
- if ((png_uint_16)((*sp >> shift) & 0x03)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- else
- {
- unsigned int p = (*sp >> shift) & 0x03;
- unsigned int g = (gamma_table [p | (p << 2) |
- (p << 4) | (p << 6)] >> 6) & 0x03;
- unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
- tmp |= g << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (shift == 0)
- {
- shift = 6;
- sp++;
- }
-
- else
- shift -= 2;
+ unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
+ tmp |=
+ (unsigned int)png_ptr->background.gray << shift;
+ *sp = (png_byte)(tmp & 0xff);
}
- }
- else
-#endif
- {
- sp = row;
- shift = 6;
- for (i = 0; i < row_width; i++)
+ if (shift == 0)
{
- if ((png_uint_16)((*sp >> shift) & 0x03)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (shift == 0)
- {
- shift = 6;
- sp++;
- }
-
- else
- shift -= 2;
+ shift = 6;
+ sp++;
}
+
+ else
+ shift -= 2;
}
- break;
}
+ break;
+ }
- case 4:
- {
+ case 4:
+ {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ shift = 4;
+ for (i = 0; i < row_width; i++)
{
- sp = row;
- shift = 4;
- for (i = 0; i < row_width; i++)
+ if ((png_uint_16)((*sp >> shift) & 0x0f)
+ == png_ptr->trans_color.gray)
{
- if ((png_uint_16)((*sp >> shift) & 0x0f)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- else
- {
- unsigned int p = (*sp >> shift) & 0x0f;
- unsigned int g = (gamma_table[p | (p << 4)] >> 4) &
- 0x0f;
- unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
- tmp |= g << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
+ unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
+ tmp |=
+ (unsigned int)(png_ptr->background.gray << shift);
+ *sp = (png_byte)(tmp & 0xff);
+ }
- if (shift == 0)
- {
- shift = 4;
- sp++;
- }
+ else
+ {
+ unsigned int p = (*sp >> shift) & 0x0f;
+ unsigned int g = (gamma_table[p | (p << 4)] >> 4) &
+ 0x0f;
+ unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
+ tmp |= (unsigned int)(g << shift);
+ *sp = (png_byte)(tmp & 0xff);
+ }
- else
- shift -= 4;
+ if (shift == 0)
+ {
+ shift = 4;
+ sp++;
}
+
+ else
+ shift -= 4;
}
+ }
- else
+ else
#endif
+ {
+ sp = row;
+ shift = 4;
+ for (i = 0; i < row_width; i++)
{
- sp = row;
- shift = 4;
- for (i = 0; i < row_width; i++)
+ if ((png_uint_16)((*sp >> shift) & 0x0f)
+ == png_ptr->trans_color.gray)
{
- if ((png_uint_16)((*sp >> shift) & 0x0f)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (shift == 0)
- {
- shift = 4;
- sp++;
- }
+ unsigned int tmp = *sp & (0x0f0f >> (4 - shift));
+ tmp |=
+ (unsigned int)(png_ptr->background.gray << shift);
+ *sp = (png_byte)(tmp & 0xff);
+ }
- else
- shift -= 4;
+ if (shift == 0)
+ {
+ shift = 4;
+ sp++;
}
+
+ else
+ shift -= 4;
}
- break;
}
+ break;
+ }
- case 8:
- {
+ case 8:
+ {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp++)
- {
- if (*sp == png_ptr->trans_color.gray)
- *sp = (png_byte)png_ptr->background.gray;
+ if (*sp == png_ptr->trans_color.gray)
+ *sp = (png_byte)png_ptr->background.gray;
- else
- *sp = gamma_table[*sp];
- }
+ else
+ *sp = gamma_table[*sp];
}
- else
+ }
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp++)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp++)
- {
- if (*sp == png_ptr->trans_color.gray)
- *sp = (png_byte)png_ptr->background.gray;
- }
+ if (*sp == png_ptr->trans_color.gray)
+ *sp = (png_byte)png_ptr->background.gray;
}
- break;
}
+ break;
+ }
- case 16:
- {
+ case 16:
+ {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL)
+ if (gamma_16 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_uint_16 v;
+ png_uint_16 v;
- v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- if (v == png_ptr->trans_color.gray)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray
- & 0xff);
- }
+ if (v == png_ptr->trans_color.gray)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray
+ & 0xff);
+ }
- else
- {
- v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- }
+ else
+ {
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
}
}
- else
+ }
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_uint_16 v;
+ png_uint_16 v;
- v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- if (v == png_ptr->trans_color.gray)
- {
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray
- & 0xff);
- }
+ if (v == png_ptr->trans_color.gray)
+ {
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray
+ & 0xff);
}
}
- break;
}
-
- default:
- break;
+ break;
}
- break;
+
+ default:
+ break;
}
+ break;
+ }
- case PNG_COLOR_TYPE_RGB:
+ case PNG_COLOR_TYPE_RGB:
+ {
+ if (row_info->bit_depth == 8)
{
- if (row_info->bit_depth == 8)
- {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
+ if (gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 3)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 3)
+ if (*sp == png_ptr->trans_color.red &&
+ *(sp + 1) == png_ptr->trans_color.green &&
+ *(sp + 2) == png_ptr->trans_color.blue)
{
- if (*sp == png_ptr->trans_color.red &&
- *(sp + 1) == png_ptr->trans_color.green &&
- *(sp + 2) == png_ptr->trans_color.blue)
- {
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
- else
- {
- *sp = gamma_table[*sp];
- *(sp + 1) = gamma_table[*(sp + 1)];
- *(sp + 2) = gamma_table[*(sp + 2)];
- }
+ else
+ {
+ *sp = gamma_table[*sp];
+ *(sp + 1) = gamma_table[*(sp + 1)];
+ *(sp + 2) = gamma_table[*(sp + 2)];
}
}
- else
+ }
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 3)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 3)
+ if (*sp == png_ptr->trans_color.red &&
+ *(sp + 1) == png_ptr->trans_color.green &&
+ *(sp + 2) == png_ptr->trans_color.blue)
{
- if (*sp == png_ptr->trans_color.red &&
- *(sp + 1) == png_ptr->trans_color.green &&
- *(sp + 2) == png_ptr->trans_color.blue)
- {
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
}
}
}
- else /* if (row_info->bit_depth == 16) */
- {
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL)
+ if (gamma_16 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 6)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 6)
- {
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
- png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
- + *(sp + 5));
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
- if (r == png_ptr->trans_color.red &&
- g == png_ptr->trans_color.green &&
- b == png_ptr->trans_color.blue)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
+ if (r == png_ptr->trans_color.red &&
+ g == png_ptr->trans_color.green &&
+ b == png_ptr->trans_color.blue)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
- else
- {
- png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
+ else
+ {
+ png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
- v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
- *(sp + 2) = (png_byte)((v >> 8) & 0xff);
- *(sp + 3) = (png_byte)(v & 0xff);
+ v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
- v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
- *(sp + 4) = (png_byte)((v >> 8) & 0xff);
- *(sp + 5) = (png_byte)(v & 0xff);
- }
+ v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
}
}
+ }
- else
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 6)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 6)
- {
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
- png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
- + *(sp + 5));
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
- if (r == png_ptr->trans_color.red &&
- g == png_ptr->trans_color.green &&
- b == png_ptr->trans_color.blue)
- {
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
+ if (r == png_ptr->trans_color.red &&
+ g == png_ptr->trans_color.green &&
+ b == png_ptr->trans_color.blue)
+ {
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
}
}
}
- break;
}
+ break;
+ }
- case PNG_COLOR_TYPE_GRAY_ALPHA:
+ case PNG_COLOR_TYPE_GRAY_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
{
- if (row_info->bit_depth == 8)
- {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
- gamma_table != NULL)
+ if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
+ gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_uint_16 a = *(sp + 1);
+ png_uint_16 a = *(sp + 1);
- if (a == 0xff)
- *sp = gamma_table[*sp];
+ if (a == 0xff)
+ *sp = gamma_table[*sp];
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)png_ptr->background.gray;
- }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)png_ptr->background.gray;
+ }
- else
- {
- png_byte v, w;
+ else
+ {
+ png_byte v, w;
- v = gamma_to_1[*sp];
- png_composite(w, v, a, png_ptr->background_1.gray);
- if (optimize == 0)
- w = gamma_from_1[w];
- *sp = w;
- }
+ v = gamma_to_1[*sp];
+ png_composite(w, v, a, png_ptr->background_1.gray);
+ if (optimize == 0)
+ w = gamma_from_1[w];
+ *sp = w;
}
}
- else
+ }
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 2)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_byte a = *(sp + 1);
+ png_byte a = *(sp + 1);
- if (a == 0)
- *sp = (png_byte)png_ptr->background.gray;
+ if (a == 0)
+ *sp = (png_byte)png_ptr->background.gray;
- else if (a < 0xff)
- png_composite(*sp, *sp, a, png_ptr->background.gray);
- }
+ else if (a < 0xff)
+ png_composite(*sp, *sp, a, png_ptr->background.gray);
}
}
- else /* if (png_ptr->bit_depth == 16) */
- {
+ }
+ else /* if (png_ptr->bit_depth == 16) */
+ {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
- gamma_16_to_1 != NULL)
+ if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
+ gamma_16_to_1 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
+ png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+
+ if (a == (png_uint_16)0xffff)
{
- png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
+ png_uint_16 v;
- if (a == (png_uint_16)0xffff)
- {
- png_uint_16 v;
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
+ }
- v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
+ }
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
- }
+ else
+ {
+ png_uint_16 g, v, w;
+ g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
+ png_composite_16(v, g, a, png_ptr->background_1.gray);
+ if (optimize != 0)
+ w = v;
else
- {
- png_uint_16 g, v, w;
-
- g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
- png_composite_16(v, g, a, png_ptr->background_1.gray);
- if (optimize != 0)
- w = v;
- else
- w = gamma_16_from_1[(v & 0xff) >>
- gamma_shift][v >> 8];
- *sp = (png_byte)((w >> 8) & 0xff);
- *(sp + 1) = (png_byte)(w & 0xff);
- }
+ w = gamma_16_from_1[(v & 0xff) >>
+ gamma_shift][v >> 8];
+ *sp = (png_byte)((w >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(w & 0xff);
}
}
- else
+ }
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
- {
- png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
+ png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
- if (a == 0)
- {
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
- }
+ if (a == 0)
+ {
+ *sp = (png_byte)((png_ptr->background.gray >> 8)
+ & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
+ }
- else if (a < 0xffff)
- {
- png_uint_16 g, v;
+ else if (a < 0xffff)
+ {
+ png_uint_16 g, v;
- g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_composite_16(v, g, a, png_ptr->background.gray);
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- }
+ g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_composite_16(v, g, a, png_ptr->background.gray);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
}
}
}
- break;
}
+ break;
+ }
- case PNG_COLOR_TYPE_RGB_ALPHA:
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ {
+ if (row_info->bit_depth == 8)
{
- if (row_info->bit_depth == 8)
- {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
- gamma_table != NULL)
+ if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
+ gamma_table != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
+ png_byte a = *(sp + 3);
+
+ if (a == 0xff)
{
- png_byte a = *(sp + 3);
+ *sp = gamma_table[*sp];
+ *(sp + 1) = gamma_table[*(sp + 1)];
+ *(sp + 2) = gamma_table[*(sp + 2)];
+ }
- if (a == 0xff)
- {
- *sp = gamma_table[*sp];
- *(sp + 1) = gamma_table[*(sp + 1)];
- *(sp + 2) = gamma_table[*(sp + 2)];
- }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
+ else
+ {
+ png_byte v, w;
- else
- {
- png_byte v, w;
-
- v = gamma_to_1[*sp];
- png_composite(w, v, a, png_ptr->background_1.red);
- if (optimize == 0) w = gamma_from_1[w];
- *sp = w;
-
- v = gamma_to_1[*(sp + 1)];
- png_composite(w, v, a, png_ptr->background_1.green);
- if (optimize == 0) w = gamma_from_1[w];
- *(sp + 1) = w;
-
- v = gamma_to_1[*(sp + 2)];
- png_composite(w, v, a, png_ptr->background_1.blue);
- if (optimize == 0) w = gamma_from_1[w];
- *(sp + 2) = w;
- }
+ v = gamma_to_1[*sp];
+ png_composite(w, v, a, png_ptr->background_1.red);
+ if (optimize == 0) w = gamma_from_1[w];
+ *sp = w;
+
+ v = gamma_to_1[*(sp + 1)];
+ png_composite(w, v, a, png_ptr->background_1.green);
+ if (optimize == 0) w = gamma_from_1[w];
+ *(sp + 1) = w;
+
+ v = gamma_to_1[*(sp + 2)];
+ png_composite(w, v, a, png_ptr->background_1.blue);
+ if (optimize == 0) w = gamma_from_1[w];
+ *(sp + 2) = w;
}
}
- else
+ }
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 4)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
- {
- png_byte a = *(sp + 3);
+ png_byte a = *(sp + 3);
- if (a == 0)
- {
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
+ if (a == 0)
+ {
+ *sp = (png_byte)png_ptr->background.red;
+ *(sp + 1) = (png_byte)png_ptr->background.green;
+ *(sp + 2) = (png_byte)png_ptr->background.blue;
+ }
- else if (a < 0xff)
- {
- png_composite(*sp, *sp, a, png_ptr->background.red);
+ else if (a < 0xff)
+ {
+ png_composite(*sp, *sp, a, png_ptr->background.red);
- png_composite(*(sp + 1), *(sp + 1), a,
- png_ptr->background.green);
+ png_composite(*(sp + 1), *(sp + 1), a,
+ png_ptr->background.green);
- png_composite(*(sp + 2), *(sp + 2), a,
- png_ptr->background.blue);
- }
+ png_composite(*(sp + 2), *(sp + 2), a,
+ png_ptr->background.blue);
}
}
}
- else /* if (row_info->bit_depth == 16) */
- {
+ }
+ else /* if (row_info->bit_depth == 16) */
+ {
#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
- gamma_16_to_1 != NULL)
+ if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
+ gamma_16_to_1 != NULL)
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 8)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 8)
+ png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
+ << 8) + (png_uint_16)(*(sp + 7)));
+
+ if (a == (png_uint_16)0xffff)
{
- png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
- << 8) + (png_uint_16)(*(sp + 7)));
+ png_uint_16 v;
- if (a == (png_uint_16)0xffff)
- {
- png_uint_16 v;
+ v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
- v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
-
- v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
- *(sp + 2) = (png_byte)((v >> 8) & 0xff);
- *(sp + 3) = (png_byte)(v & 0xff);
+ v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
- v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
- *(sp + 4) = (png_byte)((v >> 8) & 0xff);
- *(sp + 5) = (png_byte)(v & 0xff);
- }
+ v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
+ }
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
+ else if (a == 0)
+ {
+ /* Background is already in screen gamma */
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
- else
- {
- png_uint_16 v, w;
-
- v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
- png_composite_16(w, v, a, png_ptr->background_1.red);
- if (optimize == 0)
- w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >>
- 8];
- *sp = (png_byte)((w >> 8) & 0xff);
- *(sp + 1) = (png_byte)(w & 0xff);
-
- v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
- png_composite_16(w, v, a, png_ptr->background_1.green);
- if (optimize == 0)
- w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >>
- 8];
-
- *(sp + 2) = (png_byte)((w >> 8) & 0xff);
- *(sp + 3) = (png_byte)(w & 0xff);
-
- v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
- png_composite_16(w, v, a, png_ptr->background_1.blue);
- if (optimize == 0)
- w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >>
- 8];
-
- *(sp + 4) = (png_byte)((w >> 8) & 0xff);
- *(sp + 5) = (png_byte)(w & 0xff);
- }
+ else
+ {
+ png_uint_16 v, w;
+
+ v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
+ png_composite_16(w, v, a, png_ptr->background_1.red);
+ if (optimize == 0)
+ w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >>
+ 8];
+ *sp = (png_byte)((w >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(w & 0xff);
+
+ v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
+ png_composite_16(w, v, a, png_ptr->background_1.green);
+ if (optimize == 0)
+ w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >>
+ 8];
+
+ *(sp + 2) = (png_byte)((w >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(w & 0xff);
+
+ v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
+ png_composite_16(w, v, a, png_ptr->background_1.blue);
+ if (optimize == 0)
+ w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >>
+ 8];
+
+ *(sp + 4) = (png_byte)((w >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(w & 0xff);
}
}
+ }
- else
+ else
#endif
+ {
+ sp = row;
+ for (i = 0; i < row_width; i++, sp += 8)
{
- sp = row;
- for (i = 0; i < row_width; i++, sp += 8)
+ png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
+ << 8) + (png_uint_16)(*(sp + 7)));
+
+ if (a == 0)
{
- png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
- << 8) + (png_uint_16)(*(sp + 7)));
+ *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
+ *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+ & 0xff);
+ *(sp + 3) = (png_byte)(png_ptr->background.green
+ & 0xff);
+ *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+ & 0xff);
+ *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
+ }
- if (a == 0)
- {
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
+ else if (a < 0xffff)
+ {
+ png_uint_16 v;
- else if (a < 0xffff)
- {
- png_uint_16 v;
+ png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
+ png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
+ + *(sp + 3));
+ png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
+ + *(sp + 5));
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
- png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
- + *(sp + 5));
+ png_composite_16(v, r, a, png_ptr->background.red);
+ *sp = (png_byte)((v >> 8) & 0xff);
+ *(sp + 1) = (png_byte)(v & 0xff);
- png_composite_16(v, r, a, png_ptr->background.red);
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
-
- png_composite_16(v, g, a, png_ptr->background.green);
- *(sp + 2) = (png_byte)((v >> 8) & 0xff);
- *(sp + 3) = (png_byte)(v & 0xff);
+ png_composite_16(v, g, a, png_ptr->background.green);
+ *(sp + 2) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 3) = (png_byte)(v & 0xff);
- png_composite_16(v, b, a, png_ptr->background.blue);
- *(sp + 4) = (png_byte)((v >> 8) & 0xff);
- *(sp + 5) = (png_byte)(v & 0xff);
- }
+ png_composite_16(v, b, a, png_ptr->background.blue);
+ *(sp + 4) = (png_byte)((v >> 8) & 0xff);
+ *(sp + 5) = (png_byte)(v & 0xff);
}
}
}
- break;
}
-
- default:
- break;
+ break;
}
+
+ default:
+ break;
}
}
#endif /* READ_BACKGROUND || READ_ALPHA_MODE */
@@ -4138,12 +4148,11 @@ png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
{
if (row_info->bit_depth == 8)
{
- PNG_CONST png_bytep table = png_ptr->gamma_from_1;
+ png_bytep table = png_ptr->gamma_from_1;
if (table != NULL)
{
- PNG_CONST int step =
- (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2;
+ int step = (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2;
/* The alpha channel is the last component: */
row += step - 1;
@@ -4157,13 +4166,12 @@ png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
else if (row_info->bit_depth == 16)
{
- PNG_CONST png_uint_16pp table = png_ptr->gamma_16_from_1;
- PNG_CONST int gamma_shift = png_ptr->gamma_shift;
+ png_uint_16pp table = png_ptr->gamma_16_from_1;
+ int gamma_shift = png_ptr->gamma_shift;
if (table != NULL)
{
- PNG_CONST int step =
- (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4;
+ int step = (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4;
/* The alpha channel is the last component: */
row += step - 2;
@@ -4194,8 +4202,9 @@ png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
* upon whether you supply trans and num_trans.
*/
static void
-png_do_expand_palette(png_row_infop row_info, png_bytep row,
- png_const_colorp palette, png_const_bytep trans_alpha, int num_trans)
+png_do_expand_palette(png_structrp png_ptr, png_row_infop row_info,
+ png_bytep row, png_const_colorp palette, png_const_bytep trans_alpha,
+ int num_trans)
{
int shift, value;
png_bytep sp, dp;
@@ -4212,8 +4221,8 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
{
case 1:
{
- sp = row + (png_size_t)((row_width - 1) >> 3);
- dp = row + (png_size_t)row_width - 1;
+ sp = row + (size_t)((row_width - 1) >> 3);
+ dp = row + (size_t)row_width - 1;
shift = 7 - (int)((row_width + 7) & 0x07);
for (i = 0; i < row_width; i++)
{
@@ -4239,8 +4248,8 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
case 2:
{
- sp = row + (png_size_t)((row_width - 1) >> 2);
- dp = row + (png_size_t)row_width - 1;
+ sp = row + (size_t)((row_width - 1) >> 2);
+ dp = row + (size_t)row_width - 1;
shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
for (i = 0; i < row_width; i++)
{
@@ -4262,8 +4271,8 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
case 4:
{
- sp = row + (png_size_t)((row_width - 1) >> 1);
- dp = row + (png_size_t)row_width - 1;
+ sp = row + (size_t)((row_width - 1) >> 1);
+ dp = row + (size_t)row_width - 1;
shift = (int)((row_width & 0x01) << 2);
for (i = 0; i < row_width; i++)
{
@@ -4296,17 +4305,30 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
{
if (num_trans > 0)
{
- sp = row + (png_size_t)row_width - 1;
- dp = row + (png_size_t)(row_width << 2) - 1;
+ sp = row + (size_t)row_width - 1;
+ dp = row + ((size_t)row_width << 2) - 1;
- for (i = 0; i < row_width; i++)
+ i = 0;
+#ifdef PNG_ARM_NEON_INTRINSICS_AVAILABLE
+ if (png_ptr->riffled_palette != NULL)
+ {
+ /* The RGBA optimization works with png_ptr->bit_depth == 8
+ * but sometimes row_info->bit_depth has been changed to 8.
+ * In these cases, the palette hasn't been riffled.
+ */
+ i = png_do_expand_palette_rgba8_neon(png_ptr, row_info, row,
+ &sp, &dp);
+ }
+#else
+ PNG_UNUSED(png_ptr)
+#endif
+
+ for (; i < row_width; i++)
{
if ((int)(*sp) >= num_trans)
*dp-- = 0xff;
-
else
*dp-- = trans_alpha[*sp];
-
*dp-- = palette[*sp].blue;
*dp-- = palette[*sp].green;
*dp-- = palette[*sp].red;
@@ -4321,10 +4343,17 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
else
{
- sp = row + (png_size_t)row_width - 1;
- dp = row + (png_size_t)(row_width * 3) - 1;
+ sp = row + (size_t)row_width - 1;
+ dp = row + (size_t)(row_width * 3) - 1;
+ i = 0;
+#ifdef PNG_ARM_NEON_INTRINSICS_AVAILABLE
+ i = png_do_expand_palette_rgb8_neon(png_ptr, row_info, row,
+ &sp, &dp);
+#else
+ PNG_UNUSED(png_ptr)
+#endif
- for (i = 0; i < row_width; i++)
+ for (; i < row_width; i++)
{
*dp-- = palette[*sp].blue;
*dp-- = palette[*sp].green;
@@ -4357,195 +4386,130 @@ png_do_expand(png_row_infop row_info, png_bytep row,
png_debug(1, "in png_do_expand");
+ if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
- if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
- {
- unsigned int gray = trans_color != NULL ? trans_color->gray : 0;
+ unsigned int gray = trans_color != NULL ? trans_color->gray : 0;
- if (row_info->bit_depth < 8)
+ if (row_info->bit_depth < 8)
+ {
+ switch (row_info->bit_depth)
{
- switch (row_info->bit_depth)
+ case 1:
{
- case 1:
+ gray = (gray & 0x01) * 0xff;
+ sp = row + (size_t)((row_width - 1) >> 3);
+ dp = row + (size_t)row_width - 1;
+ shift = 7 - (int)((row_width + 7) & 0x07);
+ for (i = 0; i < row_width; i++)
{
- gray = (gray & 0x01) * 0xff;
- sp = row + (png_size_t)((row_width - 1) >> 3);
- dp = row + (png_size_t)row_width - 1;
- shift = 7 - (int)((row_width + 7) & 0x07);
- for (i = 0; i < row_width; i++)
- {
- if ((*sp >> shift) & 0x01)
- *dp = 0xff;
-
- else
- *dp = 0;
-
- if (shift == 7)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift++;
+ if ((*sp >> shift) & 0x01)
+ *dp = 0xff;
- dp--;
- }
- break;
- }
+ else
+ *dp = 0;
- case 2:
- {
- gray = (gray & 0x03) * 0x55;
- sp = row + (png_size_t)((row_width - 1) >> 2);
- dp = row + (png_size_t)row_width - 1;
- shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
- for (i = 0; i < row_width; i++)
+ if (shift == 7)
{
- value = (*sp >> shift) & 0x03;
- *dp = (png_byte)(value | (value << 2) | (value << 4) |
- (value << 6));
- if (shift == 6)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift += 2;
-
- dp--;
+ shift = 0;
+ sp--;
}
- break;
- }
- case 4:
- {
- gray = (gray & 0x0f) * 0x11;
- sp = row + (png_size_t)((row_width - 1) >> 1);
- dp = row + (png_size_t)row_width - 1;
- shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
- for (i = 0; i < row_width; i++)
- {
- value = (*sp >> shift) & 0x0f;
- *dp = (png_byte)(value | (value << 4));
- if (shift == 4)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift = 4;
+ else
+ shift++;
- dp--;
- }
- break;
+ dp--;
}
-
- default:
- break;
+ break;
}
- row_info->bit_depth = 8;
- row_info->pixel_depth = 8;
- row_info->rowbytes = row_width;
- }
-
- if (trans_color != NULL)
- {
- if (row_info->bit_depth == 8)
+ case 2:
{
- gray = gray & 0xff;
- sp = row + (png_size_t)row_width - 1;
- dp = row + (png_size_t)(row_width << 1) - 1;
-
+ gray = (gray & 0x03) * 0x55;
+ sp = row + (size_t)((row_width - 1) >> 2);
+ dp = row + (size_t)row_width - 1;
+ shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
for (i = 0; i < row_width; i++)
{
- if ((*sp & 0xffU) == gray)
- *dp-- = 0;
+ value = (*sp >> shift) & 0x03;
+ *dp = (png_byte)(value | (value << 2) | (value << 4) |
+ (value << 6));
+ if (shift == 6)
+ {
+ shift = 0;
+ sp--;
+ }
else
- *dp-- = 0xff;
+ shift += 2;
- *dp-- = *sp--;
+ dp--;
}
+ break;
}
- else if (row_info->bit_depth == 16)
+ case 4:
{
- unsigned int gray_high = (gray >> 8) & 0xff;
- unsigned int gray_low = gray & 0xff;
- sp = row + row_info->rowbytes - 1;
- dp = row + (row_info->rowbytes << 1) - 1;
+ gray = (gray & 0x0f) * 0x11;
+ sp = row + (size_t)((row_width - 1) >> 1);
+ dp = row + (size_t)row_width - 1;
+ shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
for (i = 0; i < row_width; i++)
{
- if ((*(sp - 1) & 0xffU) == gray_high &&
- (*(sp) & 0xffU) == gray_low)
+ value = (*sp >> shift) & 0x0f;
+ *dp = (png_byte)(value | (value << 4));
+ if (shift == 4)
{
- *dp-- = 0;
- *dp-- = 0;
+ shift = 0;
+ sp--;
}
else
- {
- *dp-- = 0xff;
- *dp-- = 0xff;
- }
+ shift = 4;
- *dp-- = *sp--;
- *dp-- = *sp--;
+ dp--;
}
+ break;
}
- row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
- row_info->channels = 2;
- row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
- row_width);
+ default:
+ break;
}
+
+ row_info->bit_depth = 8;
+ row_info->pixel_depth = 8;
+ row_info->rowbytes = row_width;
}
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
- trans_color != NULL)
+
+ if (trans_color != NULL)
{
if (row_info->bit_depth == 8)
{
- png_byte red = (png_byte)(trans_color->red & 0xff);
- png_byte green = (png_byte)(trans_color->green & 0xff);
- png_byte blue = (png_byte)(trans_color->blue & 0xff);
- sp = row + (png_size_t)row_info->rowbytes - 1;
- dp = row + (png_size_t)(row_width << 2) - 1;
+ gray = gray & 0xff;
+ sp = row + (size_t)row_width - 1;
+ dp = row + ((size_t)row_width << 1) - 1;
+
for (i = 0; i < row_width; i++)
{
- if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue)
+ if ((*sp & 0xffU) == gray)
*dp-- = 0;
else
*dp-- = 0xff;
*dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
}
}
+
else if (row_info->bit_depth == 16)
{
- png_byte red_high = (png_byte)((trans_color->red >> 8) & 0xff);
- png_byte green_high = (png_byte)((trans_color->green >> 8) & 0xff);
- png_byte blue_high = (png_byte)((trans_color->blue >> 8) & 0xff);
- png_byte red_low = (png_byte)(trans_color->red & 0xff);
- png_byte green_low = (png_byte)(trans_color->green & 0xff);
- png_byte blue_low = (png_byte)(trans_color->blue & 0xff);
+ unsigned int gray_high = (gray >> 8) & 0xff;
+ unsigned int gray_low = gray & 0xff;
sp = row + row_info->rowbytes - 1;
- dp = row + (png_size_t)(row_width << 3) - 1;
+ dp = row + (row_info->rowbytes << 1) - 1;
for (i = 0; i < row_width; i++)
{
- if (*(sp - 5) == red_high &&
- *(sp - 4) == red_low &&
- *(sp - 3) == green_high &&
- *(sp - 2) == green_low &&
- *(sp - 1) == blue_high &&
- *(sp ) == blue_low)
+ if ((*(sp - 1) & 0xffU) == gray_high &&
+ (*(sp) & 0xffU) == gray_low)
{
*dp-- = 0;
*dp-- = 0;
@@ -4559,17 +4523,80 @@ png_do_expand(png_row_infop row_info, png_bytep row,
*dp-- = *sp--;
*dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
}
}
- row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
- row_info->channels = 4;
- row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
+
+ row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
+ row_info->channels = 2;
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
+ row_width);
+ }
+ }
+ else if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
+ trans_color != NULL)
+ {
+ if (row_info->bit_depth == 8)
+ {
+ png_byte red = (png_byte)(trans_color->red & 0xff);
+ png_byte green = (png_byte)(trans_color->green & 0xff);
+ png_byte blue = (png_byte)(trans_color->blue & 0xff);
+ sp = row + (size_t)row_info->rowbytes - 1;
+ dp = row + ((size_t)row_width << 2) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue)
+ *dp-- = 0;
+
+ else
+ *dp-- = 0xff;
+
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
+ }
+ else if (row_info->bit_depth == 16)
+ {
+ png_byte red_high = (png_byte)((trans_color->red >> 8) & 0xff);
+ png_byte green_high = (png_byte)((trans_color->green >> 8) & 0xff);
+ png_byte blue_high = (png_byte)((trans_color->blue >> 8) & 0xff);
+ png_byte red_low = (png_byte)(trans_color->red & 0xff);
+ png_byte green_low = (png_byte)(trans_color->green & 0xff);
+ png_byte blue_low = (png_byte)(trans_color->blue & 0xff);
+ sp = row + row_info->rowbytes - 1;
+ dp = row + ((size_t)row_width << 3) - 1;
+ for (i = 0; i < row_width; i++)
+ {
+ if (*(sp - 5) == red_high &&
+ *(sp - 4) == red_low &&
+ *(sp - 3) == green_high &&
+ *(sp - 2) == green_low &&
+ *(sp - 1) == blue_high &&
+ *(sp ) == blue_low)
+ {
+ *dp-- = 0;
+ *dp-- = 0;
+ }
+
+ else
+ {
+ *dp-- = 0xff;
+ *dp-- = 0xff;
+ }
+
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ *dp-- = *sp--;
+ }
}
+ row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ row_info->channels = 4;
+ row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
+ row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
}
#endif
@@ -4596,7 +4623,9 @@ png_do_expand_16(png_row_infop row_info, png_bytep row)
png_byte *sp = row + row_info->rowbytes; /* source, last byte + 1 */
png_byte *dp = sp + row_info->rowbytes; /* destination, end + 1 */
while (dp > sp)
- dp[-2] = dp[-1] = *--sp, dp -= 2;
+ {
+ dp[-2] = dp[-1] = *--sp; dp -= 2;
+ }
row_info->rowbytes *= 2;
row_info->bit_depth = 16;
@@ -4738,7 +4767,19 @@ png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info)
{
if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
{
- png_do_expand_palette(row_info, png_ptr->row_buf + 1,
+#ifdef PNG_ARM_NEON_INTRINSICS_AVAILABLE
+ if ((png_ptr->num_trans > 0) && (png_ptr->bit_depth == 8))
+ {
+ if (png_ptr->riffled_palette == NULL)
+ {
+ /* Initialize the accelerated palette expansion. */
+ png_ptr->riffled_palette =
+ (png_bytep)png_malloc(png_ptr, 256 * 4);
+ png_riffle_palette_neon(png_ptr);
+ }
+ }
+#endif
+ png_do_expand_palette(png_ptr, row_info, png_ptr->row_buf + 1,
png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
}
@@ -4750,8 +4791,7 @@ png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info)
&(png_ptr->trans_color));
else
- png_do_expand(row_info, png_ptr->row_buf + 1,
- NULL);
+ png_do_expand(row_info, png_ptr->row_buf + 1, NULL);
}
}
#endif
@@ -4975,7 +5015,7 @@ png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info)
(png_ptr, /* png_ptr */
row_info, /* row_info: */
/* png_uint_32 width; width of row */
- /* png_size_t rowbytes; number of bytes in row */
+ /* size_t rowbytes; number of bytes in row */
/* png_byte color_type; color type of pixels */
/* png_byte bit_depth; bit depth of samples */
/* png_byte channels; number of channels (1-4) */
diff --git a/thirdparty/libpng/pngrutil.c b/thirdparty/libpng/pngrutil.c
index 3eaa635ad..d31dc21da 100644
--- a/thirdparty/libpng/pngrutil.c
+++ b/thirdparty/libpng/pngrutil.c
@@ -1,10 +1,10 @@
/* pngrutil.c - utilities to read a PNG file
*
- * Last changed in libpng 1.6.25 [September 1, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -26,7 +26,7 @@ png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf)
if (uval > PNG_UINT_31_MAX)
png_error(png_ptr, "PNG unsigned integer out of range");
- return (uval);
+ return uval;
}
#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED)
@@ -86,7 +86,7 @@ png_get_int_32)(png_const_bytep buf)
{
png_uint_32 uval = png_get_uint_32(buf);
if ((uval & 0x80000000) == 0) /* non-negative */
- return uval;
+ return (png_int_32)uval;
uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
if ((uval & 0x80000000) == 0) /* no overflow */
@@ -102,7 +102,7 @@ png_get_int_32)(png_const_bytep buf)
png_uint_16 (PNGAPI
png_get_uint_16)(png_const_bytep buf)
{
- /* ANSI-C requires an int value to accomodate at least 16 bits so this
+ /* ANSI-C requires an int value to accommodate at least 16 bits so this
* works and allows the compiler not to worry about possible narrowing
* on 32-bit systems. (Pre-ANSI systems did not make integers smaller
* than 16 bits either.)
@@ -120,7 +120,7 @@ png_get_uint_16)(png_const_bytep buf)
void /* PRIVATE */
png_read_sig(png_structrp png_ptr, png_inforp info_ptr)
{
- png_size_t num_checked, num_to_check;
+ size_t num_checked, num_to_check;
/* Exit if the user application does not expect a signature. */
if (png_ptr->sig_bytes >= 8)
@@ -140,7 +140,7 @@ png_read_sig(png_structrp png_ptr, png_inforp info_ptr)
if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check) != 0)
{
if (num_checked < 4 &&
- png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4) != 0)
png_error(png_ptr, "Not a PNG file");
else
png_error(png_ptr, "PNG file corrupted by ASCII conversion");
@@ -171,7 +171,7 @@ png_read_chunk_header(png_structrp png_ptr)
/* Put the chunk name into png_ptr->chunk_name. */
png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
- png_debug2(0, "Reading %lx chunk, length = %lu",
+ png_debug2(0, "Reading chunk typeid = 0x%lx, length = %lu",
(unsigned long)png_ptr->chunk_name, (unsigned long)length);
/* Reset the crc and run it over the chunk name. */
@@ -181,6 +181,9 @@ png_read_chunk_header(png_structrp png_ptr)
/* Check to see if chunk name is valid. */
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+ /* Check for too-large chunk length */
+ png_check_chunk_length(png_ptr, length);
+
#ifdef PNG_IO_STATE_SUPPORTED
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
#endif
@@ -235,10 +238,10 @@ png_crc_finish(png_structrp png_ptr, png_uint_32 skip)
else
png_chunk_error(png_ptr, "CRC error");
- return (1);
+ return 1;
}
- return (0);
+ return 0;
}
/* Compare the CRC stored in the PNG file with that calculated by libpng from
@@ -274,11 +277,11 @@ png_crc_error(png_structrp png_ptr)
if (need_crc != 0)
{
crc = png_get_uint_32(crc_bytes);
- return ((int)(crc != png_ptr->crc));
+ return crc != png_ptr->crc;
}
else
- return (0);
+ return 0;
}
#if defined(PNG_READ_iCCP_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) ||\
@@ -298,7 +301,6 @@ png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
if (buffer != NULL && new_size > png_ptr->read_buffer_size)
{
- png_ptr->read_buffer = NULL;
png_ptr->read_buffer = NULL;
png_ptr->read_buffer_size = 0;
png_free(png_ptr, buffer);
@@ -311,6 +313,7 @@ png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
if (buffer != NULL)
{
+ memset(buffer, 0, new_size); /* just in case */
png_ptr->read_buffer = buffer;
png_ptr->read_buffer_size = new_size;
}
@@ -370,11 +373,10 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
*/
{
int ret; /* zlib return code */
-#if PNG_ZLIB_VERNUM >= 0x1240
+#if ZLIB_VERNUM >= 0x1240
+ int window_bits = 0;
# if defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_MAXIMUM_INFLATE_WINDOW)
- int window_bits;
-
if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) ==
PNG_OPTION_ON)
{
@@ -384,13 +386,11 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
else
{
- window_bits = 0;
png_ptr->zstream_start = 1;
}
-# else
-# define window_bits 0
# endif
-#endif
+
+#endif /* ZLIB_VERNUM >= 0x1240 */
/* Set this for safety, just in case the previous owner left pointers to
* memory allocations.
@@ -402,25 +402,31 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0)
{
-#if PNG_ZLIB_VERNUM < 0x1240
- ret = inflateReset(&png_ptr->zstream);
-#else
+#if ZLIB_VERNUM >= 0x1240
ret = inflateReset2(&png_ptr->zstream, window_bits);
+#else
+ ret = inflateReset(&png_ptr->zstream);
#endif
}
else
{
-#if PNG_ZLIB_VERNUM < 0x1240
- ret = inflateInit(&png_ptr->zstream);
-#else
+#if ZLIB_VERNUM >= 0x1240
ret = inflateInit2(&png_ptr->zstream, window_bits);
+#else
+ ret = inflateInit(&png_ptr->zstream);
#endif
if (ret == Z_OK)
png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
}
+#ifdef PNG_DISABLE_ADLER32_CHECK_SUPPORTED
+ if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON)
+ /* Turn off validation of the ADLER32 checksum in IDAT chunks */
+ ret = inflateValidate(&png_ptr->zstream, 0);
+#endif
+
if (ret == Z_OK)
png_ptr->zowner = owner;
@@ -435,7 +441,7 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
#endif
}
-#if PNG_ZLIB_VERNUM >= 0x1240
+#if ZLIB_VERNUM >= 0x1240
/* Handle the start of the inflate stream if we called inflateInit2(strm,0);
* in this case some zlib versions skip validation of the CINFO field and, in
* certain circumstances, libpng may end up displaying an invalid image, in
@@ -666,6 +672,8 @@ png_decompress_chunk(png_structrp png_ptr,
if (text != NULL)
{
+ memset(text, 0, buffer_size);
+
ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
png_ptr->read_buffer + prefix_size, &lzsize,
text + prefix_size, newlength);
@@ -713,7 +721,7 @@ png_decompress_chunk(png_structrp png_ptr,
* the extra space may otherwise be used as a Trojan Horse.
*/
if (ret == Z_STREAM_END &&
- chunklength - prefix_size != lzsize)
+ chunklength - prefix_size != lzsize)
png_chunk_benign_error(png_ptr, "extra compressed data");
}
@@ -729,9 +737,7 @@ png_decompress_chunk(png_structrp png_ptr,
{
/* inflateReset failed, store the error message */
png_zstream_error(png_ptr, ret);
-
- if (ret == Z_STREAM_END)
- ret = PNG_UNEXPECTED_ZLIB_RETURN;
+ ret = PNG_UNEXPECTED_ZLIB_RETURN;
}
}
@@ -823,7 +829,7 @@ png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
return Z_STREAM_ERROR;
}
}
-#endif
+#endif /* READ_iCCP */
/* Read and check the IDHR chunk */
@@ -1011,7 +1017,7 @@ png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
#endif
{
- png_crc_finish(png_ptr, (int) length - num * 3);
+ png_crc_finish(png_ptr, (png_uint_32) (length - (unsigned int)num * 3));
}
#ifndef PNG_READ_OPT_PLTE_SUPPORTED
@@ -1373,11 +1379,13 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
* chunk is just ignored, so does not invalidate the color space. An
* alternative is to set the 'invalid' flags at the start of this routine
* and only clear them in they were not set before and all the tests pass.
- * The minimum 'deflate' stream is assumed to be just the 2 byte header and
- * 4 byte checksum. The keyword must be at least one character and there is
- * a terminator (0) byte and the compression method.
*/
- if (length < 9)
+
+ /* The keyword must be at least one character and there is a
+ * terminator (0) byte and the compression method byte, and the
+ * 'zlib' datastream is at least 11 bytes.
+ */
+ if (length < 14)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "too short");
@@ -1409,6 +1417,16 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_crc_read(png_ptr, (png_bytep)keyword, read_length);
length -= read_length;
+ /* The minimum 'zlib' stream is assumed to be just the 2 byte header,
+ * 5 bytes minimum 'deflate' stream, and the 4 byte checksum.
+ */
+ if (length < 11)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "too short");
+ return;
+ }
+
keyword_length = 0;
while (keyword_length < 80 && keyword_length < read_length &&
keyword[keyword_length] != 0)
@@ -1427,7 +1445,7 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK)
{
- Byte profile_header[132];
+ Byte profile_header[132]={0};
Byte local_buffer[PNG_INFLATE_BUF_SIZE];
png_alloc_size_t size = (sizeof profile_header);
@@ -1441,8 +1459,7 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
{
/* We have the ICC profile header; do the basic header checks.
*/
- const png_uint_32 profile_length =
- png_get_uint_32(profile_header);
+ png_uint_32 profile_length = png_get_uint_32(profile_header);
if (png_icc_check_length(png_ptr, &png_ptr->colorspace,
keyword, profile_length) != 0)
@@ -1457,10 +1474,10 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
/* Now read the tag table; a variable size buffer is
* needed at this point, allocate one for the whole
* profile. The header check has already validated
- * that none of these stuff will overflow.
+ * that none of this stuff will overflow.
*/
- const png_uint_32 tag_count = png_get_uint_32(
- profile_header+128);
+ png_uint_32 tag_count =
+ png_get_uint_32(profile_header + 128);
png_bytep profile = png_read_buffer(png_ptr,
profile_length, 2/*silent*/);
@@ -1564,19 +1581,11 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
return;
}
}
-
- else if (size > 0)
- errmsg = "truncated";
-
-#ifndef __COVERITY__
- else
+ if (errmsg == NULL)
errmsg = png_ptr->zstream.msg;
-#endif
}
-
/* else png_icc_check_tag_table output an error */
}
-
else /* profile truncated */
errmsg = png_ptr->zstream.msg;
}
@@ -1636,7 +1645,7 @@ png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
int entry_size, i;
png_uint_32 skip = 0;
png_uint_32 dl;
- png_size_t max_dl;
+ size_t max_dl;
png_debug(1, "in png_handle_sPLT");
@@ -1717,13 +1726,13 @@ png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
data_length = length - (png_uint_32)(entry_start - buffer);
/* Integrity-check the data length */
- if ((data_length % entry_size) != 0)
+ if ((data_length % (unsigned int)entry_size) != 0)
{
png_warning(png_ptr, "sPLT chunk has bad length");
return;
}
- dl = (png_int_32)(data_length / entry_size);
+ dl = (png_uint_32)(data_length / (unsigned int)entry_size);
max_dl = PNG_SIZE_MAX / (sizeof (png_sPLT_entry));
if (dl > max_dl)
@@ -1732,10 +1741,10 @@ png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
return;
}
- new_palette.nentries = (png_int_32)(data_length / entry_size);
+ new_palette.nentries = (png_int_32)(data_length / (unsigned int)entry_size);
- new_palette.entries = (png_sPLT_entryp)png_malloc_warn(
- png_ptr, new_palette.nentries * (sizeof (png_sPLT_entry)));
+ new_palette.entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
+ (png_alloc_size_t) new_palette.nentries * (sizeof (png_sPLT_entry)));
if (new_palette.entries == NULL)
{
@@ -1985,6 +1994,15 @@ png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) /* GRAY */
{
+ if (png_ptr->bit_depth <= 8)
+ {
+ if (buf[0] != 0 || buf[1] >= (unsigned int)(1 << png_ptr->bit_depth))
+ {
+ png_chunk_benign_error(png_ptr, "invalid gray level");
+ return;
+ }
+ }
+
background.index = 0;
background.red =
background.green =
@@ -1994,6 +2012,15 @@ png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
else
{
+ if (png_ptr->bit_depth <= 8)
+ {
+ if (buf[0] != 0 || buf[2] != 0 || buf[4] != 0)
+ {
+ png_chunk_benign_error(png_ptr, "invalid color");
+ return;
+ }
+ }
+
background.index = 0;
background.red = png_get_uint_16(buf);
background.green = png_get_uint_16(buf + 2);
@@ -2005,6 +2032,70 @@ png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
}
#endif
+#ifdef PNG_READ_eXIf_SUPPORTED
+void /* PRIVATE */
+png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
+{
+ unsigned int i;
+
+ png_debug(1, "in png_handle_eXIf");
+
+ if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
+ png_chunk_error(png_ptr, "missing IHDR");
+
+ if (length < 2)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "too short");
+ return;
+ }
+
+ else if (info_ptr == NULL || (info_ptr->valid & PNG_INFO_eXIf) != 0)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "duplicate");
+ return;
+ }
+
+ info_ptr->free_me |= PNG_FREE_EXIF;
+
+ info_ptr->eXIf_buf = png_voidcast(png_bytep,
+ png_malloc_warn(png_ptr, length));
+
+ if (info_ptr->eXIf_buf == NULL)
+ {
+ png_crc_finish(png_ptr, length);
+ png_chunk_benign_error(png_ptr, "out of memory");
+ return;
+ }
+
+ for (i = 0; i < length; i++)
+ {
+ png_byte buf[1];
+ png_crc_read(png_ptr, buf, 1);
+ info_ptr->eXIf_buf[i] = buf[0];
+ if (i == 1)
+ {
+ if ((buf[0] != 'M' && buf[0] != 'I') ||
+ (info_ptr->eXIf_buf[0] != buf[0]))
+ {
+ png_crc_finish(png_ptr, length - 2);
+ png_chunk_benign_error(png_ptr, "incorrect byte-order specifier");
+ png_free(png_ptr, info_ptr->eXIf_buf);
+ info_ptr->eXIf_buf = NULL;
+ return;
+ }
+ }
+ }
+
+ if (png_crc_finish(png_ptr, 0) == 0)
+ png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
+
+ png_free(png_ptr, info_ptr->eXIf_buf);
+ info_ptr->eXIf_buf = NULL;
+}
+#endif
+
#ifdef PNG_READ_hIST_SUPPORTED
void /* PRIVATE */
png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
@@ -2034,8 +2125,9 @@ png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
num = length / 2 ;
- if (num != (unsigned int) png_ptr->num_palette ||
- num > (unsigned int) PNG_MAX_PALETTE_LENGTH)
+ if (length != num * 2 ||
+ num != (unsigned int)png_ptr->num_palette ||
+ num > (unsigned int)PNG_MAX_PALETTE_LENGTH)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "invalid");
@@ -2284,7 +2376,7 @@ void /* PRIVATE */
png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
{
png_bytep buffer;
- png_size_t i;
+ size_t i;
int state;
png_debug(1, "in png_handle_sCAL");
@@ -2354,7 +2446,7 @@ png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
else
{
- png_size_t heighti = i;
+ size_t heighti = i;
state = 0;
if (png_check_fp_number((png_const_charp)buffer, length,
@@ -2533,6 +2625,9 @@ png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
png_ptr->mode |= PNG_AFTER_IDAT;
+ /* Note, "length" is sufficient here; we won't be adding
+ * a null terminator later.
+ */
buffer = png_read_buffer(png_ptr, length, 2/*silent*/);
if (buffer == NULL)
@@ -2579,23 +2674,28 @@ png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
{
png_text text;
- /* It worked; png_ptr->read_buffer now looks like a tEXt chunk except
- * for the extra compression type byte and the fact that it isn't
- * necessarily '\0' terminated.
- */
- buffer = png_ptr->read_buffer;
- buffer[uncompressed_length+(keyword_length+2)] = 0;
-
- text.compression = PNG_TEXT_COMPRESSION_zTXt;
- text.key = (png_charp)buffer;
- text.text = (png_charp)(buffer + keyword_length+2);
- text.text_length = uncompressed_length;
- text.itxt_length = 0;
- text.lang = NULL;
- text.lang_key = NULL;
-
- if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0)
- errmsg = "insufficient memory";
+ if (png_ptr->read_buffer == NULL)
+ errmsg="Read failure in png_handle_zTXt";
+ else
+ {
+ /* It worked; png_ptr->read_buffer now looks like a tEXt chunk
+ * except for the extra compression type byte and the fact that
+ * it isn't necessarily '\0' terminated.
+ */
+ buffer = png_ptr->read_buffer;
+ buffer[uncompressed_length+(keyword_length+2)] = 0;
+
+ text.compression = PNG_TEXT_COMPRESSION_zTXt;
+ text.key = (png_charp)buffer;
+ text.text = (png_charp)(buffer + keyword_length+2);
+ text.text_length = uncompressed_length;
+ text.itxt_length = 0;
+ text.lang = NULL;
+ text.lang_key = NULL;
+
+ if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0)
+ errmsg = "insufficient memory";
+ }
}
else
@@ -2784,7 +2884,7 @@ png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length)
{
PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
/* The following is safe because of the PNG_SIZE_MAX init above */
- png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/;
+ png_ptr->unknown_chunk.size = (size_t)length/*SAFE*/;
/* 'mode' is a flag array, only the bottom four bits matter here */
png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/;
@@ -2971,7 +3071,7 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
case 2:
png_ptr->user_chunk_cache_max = 1;
png_chunk_benign_error(png_ptr, "no space in chunk cache");
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 1:
/* NOTE: prior to 1.6.0 this case resulted in an unknown critical
* chunk being skipped, now there will be a hard error below.
@@ -2980,7 +3080,7 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
default: /* not at limit */
--(png_ptr->user_chunk_cache_max);
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 0: /* no limit */
# endif /* USER_LIMITS */
/* Here when the limit isn't reached or when limits are compiled
@@ -3031,20 +3131,61 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
*/
void /* PRIVATE */
-png_check_chunk_name(png_structrp png_ptr, png_uint_32 chunk_name)
+png_check_chunk_name(png_const_structrp png_ptr, png_uint_32 chunk_name)
{
int i;
+ png_uint_32 cn=chunk_name;
png_debug(1, "in png_check_chunk_name");
for (i=1; i<=4; ++i)
{
- int c = chunk_name & 0xff;
+ int c = cn & 0xff;
if (c < 65 || c > 122 || (c > 90 && c < 97))
png_chunk_error(png_ptr, "invalid chunk type");
- chunk_name >>= 8;
+ cn >>= 8;
+ }
+}
+
+void /* PRIVATE */
+png_check_chunk_length(png_const_structrp png_ptr, png_uint_32 length)
+{
+ png_alloc_size_t limit = PNG_UINT_31_MAX;
+
+# ifdef PNG_SET_USER_LIMITS_SUPPORTED
+ if (png_ptr->user_chunk_malloc_max > 0 &&
+ png_ptr->user_chunk_malloc_max < limit)
+ limit = png_ptr->user_chunk_malloc_max;
+# elif PNG_USER_CHUNK_MALLOC_MAX > 0
+ if (PNG_USER_CHUNK_MALLOC_MAX < limit)
+ limit = PNG_USER_CHUNK_MALLOC_MAX;
+# endif
+ if (png_ptr->chunk_name == png_IDAT)
+ {
+ png_alloc_size_t idat_limit = PNG_UINT_31_MAX;
+ size_t row_factor =
+ (size_t)png_ptr->width
+ * (size_t)png_ptr->channels
+ * (png_ptr->bit_depth > 8? 2: 1)
+ + 1
+ + (png_ptr->interlaced? 6: 0);
+ if (png_ptr->height > PNG_UINT_32_MAX/row_factor)
+ idat_limit = PNG_UINT_31_MAX;
+ else
+ idat_limit = png_ptr->height * row_factor;
+ row_factor = row_factor > 32566? 32566 : row_factor;
+ idat_limit += 6 + 5*(idat_limit/row_factor+1); /* zlib+deflate overhead */
+ idat_limit=idat_limit < PNG_UINT_31_MAX? idat_limit : PNG_UINT_31_MAX;
+ limit = limit < idat_limit? idat_limit : limit;
+ }
+
+ if (length > limit)
+ {
+ png_debug2(0," length = %lu, limit = %lu",
+ (unsigned long)length,(unsigned long)limit);
+ png_benign_error(png_ptr, "chunk data is too large");
}
}
@@ -3099,7 +3240,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
# ifdef PNG_READ_PACKSWAP_SUPPORTED
if ((png_ptr->transformations & PNG_PACKSWAP) != 0)
/* little-endian byte */
- end_mask = 0xff << end_mask;
+ end_mask = (unsigned int)(0xff << end_mask);
else /* big-endian byte */
# endif
@@ -3221,7 +3362,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
/* Hence the pre-compiled masks indexed by PACKSWAP (or not), depth and
* then pass:
*/
- static PNG_CONST png_uint_32 row_mask[2/*PACKSWAP*/][3/*depth*/][6] =
+ static const png_uint_32 row_mask[2/*PACKSWAP*/][3/*depth*/][6] =
{
/* Little-endian byte masks for PACKSWAP */
{ S_MASKS(1,0), S_MASKS(2,0), S_MASKS(4,0) },
@@ -3232,7 +3373,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
/* display_mask has only three entries for the odd passes, so index by
* pass>>1.
*/
- static PNG_CONST png_uint_32 display_mask[2][3][3] =
+ static const png_uint_32 display_mask[2][3][3] =
{
/* Little-endian byte masks for PACKSWAP */
{ B_MASKS(1,0), B_MASKS(2,0), B_MASKS(4,0) },
@@ -3373,7 +3514,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
*/
do
{
- dp[0] = sp[0], dp[1] = sp[1];
+ dp[0] = sp[0]; dp[1] = sp[1];
if (row_width <= bytes_to_jump)
return;
@@ -3394,7 +3535,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
*/
for (;;)
{
- dp[0] = sp[0], dp[1] = sp[1], dp[2] = sp[2];
+ dp[0] = sp[0]; dp[1] = sp[1]; dp[2] = sp[2];
if (row_width <= bytes_to_jump)
return;
@@ -3545,7 +3686,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
{
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Offset to next interlace block */
- static PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static const unsigned int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
png_debug(1, "in png_do_read_interlace");
if (row != NULL && row_info != NULL)
@@ -3558,11 +3699,12 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
{
case 1:
{
- png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 3);
- png_bytep dp = row + (png_size_t)((final_width - 1) >> 3);
- int sshift, dshift;
- int s_start, s_end, s_inc;
- int jstop = png_pass_inc[pass];
+ png_bytep sp = row + (size_t)((row_info->width - 1) >> 3);
+ png_bytep dp = row + (size_t)((final_width - 1) >> 3);
+ unsigned int sshift, dshift;
+ unsigned int s_start, s_end;
+ int s_inc;
+ int jstop = (int)png_pass_inc[pass];
png_byte v;
png_uint_32 i;
int j;
@@ -3570,8 +3712,8 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if ((transformations & PNG_PACKSWAP) != 0)
{
- sshift = (int)((row_info->width + 7) & 0x07);
- dshift = (int)((final_width + 7) & 0x07);
+ sshift = ((row_info->width + 7) & 0x07);
+ dshift = ((final_width + 7) & 0x07);
s_start = 7;
s_end = 0;
s_inc = -1;
@@ -3580,8 +3722,8 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
else
#endif
{
- sshift = 7 - (int)((row_info->width + 7) & 0x07);
- dshift = 7 - (int)((final_width + 7) & 0x07);
+ sshift = 7 - ((row_info->width + 7) & 0x07);
+ dshift = 7 - ((final_width + 7) & 0x07);
s_start = 0;
s_end = 7;
s_inc = 1;
@@ -3593,7 +3735,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
for (j = 0; j < jstop; j++)
{
unsigned int tmp = *dp & (0x7f7f >> (7 - dshift));
- tmp |= v << dshift;
+ tmp |= (unsigned int)(v << dshift);
*dp = (png_byte)(tmp & 0xff);
if (dshift == s_end)
@@ -3603,7 +3745,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
}
else
- dshift += s_inc;
+ dshift = (unsigned int)((int)dshift + s_inc);
}
if (sshift == s_end)
@@ -3613,7 +3755,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
}
else
- sshift += s_inc;
+ sshift = (unsigned int)((int)sshift + s_inc);
}
break;
}
@@ -3622,16 +3764,17 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
{
png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2);
png_bytep dp = row + (png_uint_32)((final_width - 1) >> 2);
- int sshift, dshift;
- int s_start, s_end, s_inc;
- int jstop = png_pass_inc[pass];
+ unsigned int sshift, dshift;
+ unsigned int s_start, s_end;
+ int s_inc;
+ int jstop = (int)png_pass_inc[pass];
png_uint_32 i;
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if ((transformations & PNG_PACKSWAP) != 0)
{
- sshift = (int)(((row_info->width + 3) & 0x03) << 1);
- dshift = (int)(((final_width + 3) & 0x03) << 1);
+ sshift = (((row_info->width + 3) & 0x03) << 1);
+ dshift = (((final_width + 3) & 0x03) << 1);
s_start = 6;
s_end = 0;
s_inc = -2;
@@ -3640,8 +3783,8 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
else
#endif
{
- sshift = (int)((3 - ((row_info->width + 3) & 0x03)) << 1);
- dshift = (int)((3 - ((final_width + 3) & 0x03)) << 1);
+ sshift = ((3 - ((row_info->width + 3) & 0x03)) << 1);
+ dshift = ((3 - ((final_width + 3) & 0x03)) << 1);
s_start = 0;
s_end = 6;
s_inc = 2;
@@ -3656,7 +3799,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
for (j = 0; j < jstop; j++)
{
unsigned int tmp = *dp & (0x3f3f >> (6 - dshift));
- tmp |= v << dshift;
+ tmp |= (unsigned int)(v << dshift);
*dp = (png_byte)(tmp & 0xff);
if (dshift == s_end)
@@ -3666,7 +3809,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
}
else
- dshift += s_inc;
+ dshift = (unsigned int)((int)dshift + s_inc);
}
if (sshift == s_end)
@@ -3676,25 +3819,26 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
}
else
- sshift += s_inc;
+ sshift = (unsigned int)((int)sshift + s_inc);
}
break;
}
case 4:
{
- png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1);
- png_bytep dp = row + (png_size_t)((final_width - 1) >> 1);
- int sshift, dshift;
- int s_start, s_end, s_inc;
+ png_bytep sp = row + (size_t)((row_info->width - 1) >> 1);
+ png_bytep dp = row + (size_t)((final_width - 1) >> 1);
+ unsigned int sshift, dshift;
+ unsigned int s_start, s_end;
+ int s_inc;
png_uint_32 i;
- int jstop = png_pass_inc[pass];
+ int jstop = (int)png_pass_inc[pass];
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if ((transformations & PNG_PACKSWAP) != 0)
{
- sshift = (int)(((row_info->width + 1) & 0x01) << 2);
- dshift = (int)(((final_width + 1) & 0x01) << 2);
+ sshift = (((row_info->width + 1) & 0x01) << 2);
+ dshift = (((final_width + 1) & 0x01) << 2);
s_start = 4;
s_end = 0;
s_inc = -4;
@@ -3703,8 +3847,8 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
else
#endif
{
- sshift = (int)((1 - ((row_info->width + 1) & 0x01)) << 2);
- dshift = (int)((1 - ((final_width + 1) & 0x01)) << 2);
+ sshift = ((1 - ((row_info->width + 1) & 0x01)) << 2);
+ dshift = ((1 - ((final_width + 1) & 0x01)) << 2);
s_start = 0;
s_end = 4;
s_inc = 4;
@@ -3718,7 +3862,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
for (j = 0; j < jstop; j++)
{
unsigned int tmp = *dp & (0xf0f >> (4 - dshift));
- tmp |= v << dshift;
+ tmp |= (unsigned int)(v << dshift);
*dp = (png_byte)(tmp & 0xff);
if (dshift == s_end)
@@ -3728,7 +3872,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
}
else
- dshift += s_inc;
+ dshift = (unsigned int)((int)dshift + s_inc);
}
if (sshift == s_end)
@@ -3738,21 +3882,21 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
}
else
- sshift += s_inc;
+ sshift = (unsigned int)((int)sshift + s_inc);
}
break;
}
default:
{
- png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
+ size_t pixel_bytes = (row_info->pixel_depth >> 3);
- png_bytep sp = row + (png_size_t)(row_info->width - 1)
+ png_bytep sp = row + (size_t)(row_info->width - 1)
* pixel_bytes;
- png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
+ png_bytep dp = row + (size_t)(final_width - 1) * pixel_bytes;
- int jstop = png_pass_inc[pass];
+ int jstop = (int)png_pass_inc[pass];
png_uint_32 i;
for (i = 0; i < row_info->width; i++)
@@ -3787,8 +3931,8 @@ static void
png_read_filter_row_sub(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
{
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
+ size_t i;
+ size_t istop = row_info->rowbytes;
unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
png_bytep rp = row + bpp;
@@ -3805,8 +3949,8 @@ static void
png_read_filter_row_up(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
{
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
+ size_t i;
+ size_t istop = row_info->rowbytes;
png_bytep rp = row;
png_const_bytep pp = prev_row;
@@ -3821,11 +3965,11 @@ static void
png_read_filter_row_avg(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
{
- png_size_t i;
+ size_t i;
png_bytep rp = row;
png_const_bytep pp = prev_row;
unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
- png_size_t istop = row_info->rowbytes - bpp;
+ size_t istop = row_info->rowbytes - bpp;
for (i = 0; i < bpp; i++)
{
@@ -3880,7 +4024,10 @@ png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row,
/* Find the best predictor, the least of pa, pb, pc favoring the earlier
* ones in the case of a tie.
*/
- if (pb < pa) pa = pb, a = b;
+ if (pb < pa)
+ {
+ pa = pb; a = b;
+ }
if (pc < pa) a = c;
/* Calculate the current pixel in a, and move the previous row pixel to c
@@ -3896,7 +4043,7 @@ static void
png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
{
- int bpp = (row_info->pixel_depth + 7) >> 3;
+ unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
png_bytep rp_end = row + bpp;
/* Process the first pixel in the row completely (this is the same as 'up'
@@ -3909,7 +4056,7 @@ png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
}
/* Remainder */
- rp_end += row_info->rowbytes - bpp;
+ rp_end = rp_end + (row_info->rowbytes - bpp);
while (row < rp_end)
{
@@ -3932,7 +4079,10 @@ png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
pc = (p + pc) < 0 ? -(p + pc) : p + pc;
#endif
- if (pb < pa) pa = pb, a = b;
+ if (pb < pa)
+ {
+ pa = pb; a = b;
+ }
if (pc < pa) a = c;
a += *row;
@@ -4178,16 +4328,16 @@ png_read_finish_row(png_structrp png_ptr)
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static const png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static const png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static const png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
png_debug(1, "in png_read_finish_row");
png_ptr->row_number++;
@@ -4243,19 +4393,19 @@ png_read_start_row(png_structrp png_ptr)
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static const png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static const png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static const png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
- int max_pixel_depth;
- png_size_t row_bytes;
+ unsigned int max_pixel_depth;
+ size_t row_bytes;
png_debug(1, "in png_read_start_row");
@@ -4283,7 +4433,7 @@ png_read_start_row(png_structrp png_ptr)
png_ptr->iwidth = png_ptr->width;
}
- max_pixel_depth = png_ptr->pixel_depth;
+ max_pixel_depth = (unsigned int)png_ptr->pixel_depth;
/* WARNING: * png_read_transform_info (pngrtran.c) performs a simpler set of
* calculations to calculate the final pixel depth, then
@@ -4418,7 +4568,7 @@ png_read_start_row(png_structrp png_ptr)
defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0)
{
- int user_pixel_depth = png_ptr->user_transform_depth *
+ unsigned int user_pixel_depth = png_ptr->user_transform_depth *
png_ptr->user_transform_channels;
if (user_pixel_depth > max_pixel_depth)
@@ -4440,7 +4590,7 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
* for safety's sake
*/
row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) +
- 1 + ((max_pixel_depth + 7) >> 3);
+ 1 + ((max_pixel_depth + 7) >> 3U);
#ifdef PNG_MAX_MALLOC_64K
if (row_bytes > (png_uint_32)65536L)
@@ -4471,14 +4621,13 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
*/
{
png_bytep temp = png_ptr->big_row_buf + 32;
- int extra = (int)((temp - (png_bytep)0) & 0x0f);
+ size_t extra = (size_t)temp & 0x0f;
png_ptr->row_buf = temp - extra - 1/*filter byte*/;
temp = png_ptr->big_prev_row + 32;
- extra = (int)((temp - (png_bytep)0) & 0x0f);
+ extra = (size_t)temp & 0x0f;
png_ptr->prev_row = temp - extra - 1/*filter byte*/;
}
-
#else
/* Use 31 bytes of padding before and 17 bytes after row_buf. */
png_ptr->row_buf = png_ptr->big_row_buf + 31;
@@ -4509,7 +4658,7 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
* does not, so free the read buffer now regardless; the sequential reader
* reallocates it on demand.
*/
- if (png_ptr->read_buffer != 0)
+ if (png_ptr->read_buffer != NULL)
{
png_bytep buffer = png_ptr->read_buffer;
diff --git a/thirdparty/libpng/pngset.c b/thirdparty/libpng/pngset.c
index cccd9cdc7..eb1c8c7a3 100644
--- a/thirdparty/libpng/pngset.c
+++ b/thirdparty/libpng/pngset.c
@@ -1,10 +1,10 @@
/* pngset.c - storage of image information into info struct
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -134,6 +134,47 @@ png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
#endif /* cHRM */
+#ifdef PNG_eXIf_SUPPORTED
+void PNGAPI
+png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_bytep exif)
+{
+ png_warning(png_ptr, "png_set_eXIf does not work; use png_set_eXIf_1");
+ PNG_UNUSED(info_ptr)
+ PNG_UNUSED(exif)
+}
+
+void PNGAPI
+png_set_eXIf_1(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_uint_32 num_exif, png_bytep exif)
+{
+ png_bytep new_exif;
+
+ png_debug1(1, "in %s storage function", "eXIf");
+
+ if (png_ptr == NULL || info_ptr == NULL ||
+ (png_ptr->mode & PNG_WROTE_eXIf) != 0)
+ return;
+
+ new_exif = png_voidcast(png_bytep, png_malloc_warn(png_ptr, num_exif));
+
+ if (new_exif == NULL)
+ {
+ png_warning(png_ptr, "Insufficient memory for eXIf chunk data");
+ return;
+ }
+
+ memcpy(new_exif, exif, (size_t)num_exif);
+
+ png_free_data(png_ptr, info_ptr, PNG_FREE_EXIF, 0);
+
+ info_ptr->num_exif = num_exif;
+ info_ptr->exif = new_exif;
+ info_ptr->free_me |= PNG_FREE_EXIF;
+ info_ptr->valid |= PNG_INFO_eXIf;
+}
+#endif /* eXIf */
+
#ifdef PNG_gAMA_SUPPORTED
void PNGFAPI
png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
@@ -190,15 +231,13 @@ png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->hist == NULL)
{
png_warning(png_ptr, "Insufficient memory for hIST chunk data");
-
return;
}
- info_ptr->free_me |= PNG_FREE_HIST;
-
for (i = 0; i < info_ptr->num_palette; i++)
info_ptr->hist[i] = hist[i];
+ info_ptr->free_me |= PNG_FREE_HIST;
info_ptr->valid |= PNG_INFO_hIST;
}
#endif
@@ -266,7 +305,7 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
int nparams, png_const_charp units, png_charpp params)
{
- png_size_t length;
+ size_t length;
int i;
png_debug1(1, "in %s storage function", "pCAL");
@@ -283,17 +322,29 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
/* Check that the type matches the specification. */
if (type < 0 || type > 3)
- png_error(png_ptr, "Invalid pCAL equation type");
+ {
+ png_chunk_report(png_ptr, "Invalid pCAL equation type",
+ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
if (nparams < 0 || nparams > 255)
- png_error(png_ptr, "Invalid pCAL parameter count");
+ {
+ png_chunk_report(png_ptr, "Invalid pCAL parameter count",
+ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
/* Validate params[nparams] */
for (i=0; ipcal_purpose = png_voidcast(png_charp,
@@ -301,13 +352,15 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_purpose == NULL)
{
- png_warning(png_ptr, "Insufficient memory for pCAL purpose");
-
+ png_chunk_report(png_ptr, "Insufficient memory for pCAL purpose",
+ PNG_CHUNK_WRITE_ERROR);
return;
}
memcpy(info_ptr->pcal_purpose, purpose, length);
+ info_ptr->free_me |= PNG_FREE_PCAL;
+
png_debug(3, "storing X0, X1, type, and nparams in info");
info_ptr->pcal_X0 = X0;
info_ptr->pcal_X1 = X1;
@@ -324,23 +377,22 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_units == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL units");
-
return;
}
memcpy(info_ptr->pcal_units, units, length);
info_ptr->pcal_params = png_voidcast(png_charpp, png_malloc_warn(png_ptr,
- (png_size_t)((nparams + 1) * (sizeof (png_charp)))));
+ (size_t)(((unsigned int)nparams + 1) * (sizeof (png_charp)))));
if (info_ptr->pcal_params == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL params");
-
return;
}
- memset(info_ptr->pcal_params, 0, (nparams + 1) * (sizeof (png_charp)));
+ memset(info_ptr->pcal_params, 0, ((unsigned int)nparams + 1) *
+ (sizeof (png_charp)));
for (i = 0; i < nparams; i++)
{
@@ -353,7 +405,6 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_params[i] == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL parameter");
-
return;
}
@@ -361,7 +412,6 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
}
info_ptr->valid |= PNG_INFO_pCAL;
- info_ptr->free_me |= PNG_FREE_PCAL;
}
#endif
@@ -370,7 +420,7 @@ void PNGAPI
png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
int unit, png_const_charp swidth, png_const_charp sheight)
{
- png_size_t lengthw = 0, lengthh = 0;
+ size_t lengthw = 0, lengthh = 0;
png_debug1(1, "in %s storage function", "sCAL");
@@ -418,18 +468,17 @@ png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->scal_s_height == NULL)
{
- png_free (png_ptr, info_ptr->scal_s_width);
+ png_free(png_ptr, info_ptr->scal_s_width);
info_ptr->scal_s_width = NULL;
png_warning(png_ptr, "Memory allocation failed while processing sCAL");
-
return;
}
memcpy(info_ptr->scal_s_height, sheight, lengthh);
- info_ptr->valid |= PNG_INFO_sCAL;
info_ptr->free_me |= PNG_FREE_SCAL;
+ info_ptr->valid |= PNG_INFO_sCAL;
}
# ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -563,12 +612,12 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
PNG_MAX_PALETTE_LENGTH * (sizeof (png_color))));
if (num_palette > 0)
- memcpy(png_ptr->palette, palette, num_palette * (sizeof (png_color)));
+ memcpy(png_ptr->palette, palette, (unsigned int)num_palette *
+ (sizeof (png_color)));
+
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
-
info_ptr->free_me |= PNG_FREE_PLTE;
-
info_ptr->valid |= PNG_INFO_PLTE;
}
@@ -630,7 +679,7 @@ png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
{
png_charp new_iccp_name;
png_bytep new_iccp_profile;
- png_size_t length;
+ size_t length;
png_debug1(1, "in %s storage function", "iCCP");
@@ -714,11 +763,11 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
{
int i;
- png_debug1(1, "in %lx storage function", png_ptr == NULL ? 0xabadca11U :
- (unsigned long)png_ptr->chunk_name);
+ png_debug1(1, "in text storage function, chunk typeid = 0x%lx",
+ png_ptr == NULL ? 0xabadca11UL : (unsigned long)png_ptr->chunk_name);
if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL)
- return(0);
+ return 0;
/* Make sure we have enough space in the "text" array in info_struct
* to hold all of the incoming text_ptr objects. This compare can't overflow
@@ -898,7 +947,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
}
- return(0);
+ return 0;
}
#endif
@@ -957,7 +1006,10 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
/* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
info_ptr->trans_alpha = png_voidcast(png_bytep,
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
- memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
+ memcpy(info_ptr->trans_alpha, trans_alpha, (size_t)num_trans);
+
+ info_ptr->free_me |= PNG_FREE_TRNS;
+ info_ptr->valid |= PNG_INFO_tRNS;
}
png_ptr->trans_alpha = info_ptr->trans_alpha;
}
@@ -990,8 +1042,8 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
if (num_trans != 0)
{
- info_ptr->valid |= PNG_INFO_tRNS;
info_ptr->free_me |= PNG_FREE_TRNS;
+ info_ptr->valid |= PNG_INFO_tRNS;
}
}
#endif
@@ -1011,6 +1063,8 @@ png_set_sPLT(png_const_structrp png_ptr,
{
png_sPLT_tp np;
+ png_debug1(1, "in %s storage function", "sPLT");
+
if (png_ptr == NULL || info_ptr == NULL || nentries <= 0 || entries == NULL)
return;
@@ -1025,11 +1079,11 @@ png_set_sPLT(png_const_structrp png_ptr,
{
/* Out of memory or too many chunks */
png_chunk_report(png_ptr, "too many sPLT chunks", PNG_CHUNK_WRITE_ERROR);
-
return;
}
png_free(png_ptr, info_ptr->splt_palettes);
+
info_ptr->splt_palettes = np;
info_ptr->free_me |= PNG_FREE_SPLT;
@@ -1037,7 +1091,7 @@ png_set_sPLT(png_const_structrp png_ptr,
do
{
- png_size_t length;
+ size_t length;
/* Skip invalid input entries */
if (entries->name == NULL || entries->entries == NULL)
@@ -1080,7 +1134,7 @@ png_set_sPLT(png_const_structrp png_ptr,
* checked it when doing the allocation.
*/
memcpy(np->entries, entries->entries,
- entries->nentries * sizeof (png_sPLT_entry));
+ (unsigned int)entries->nentries * sizeof (png_sPLT_entry));
/* Note that 'continue' skips the advance of the out pointer and out
* count, so an invalid entry is not added.
@@ -1088,8 +1142,9 @@ png_set_sPLT(png_const_structrp png_ptr,
info_ptr->valid |= PNG_INFO_sPLT;
++(info_ptr->splt_palettes_num);
++np;
+ ++entries;
}
- while (++entries, --nentries);
+ while (--nentries);
if (nentries > 0)
png_chunk_report(png_ptr, "sPLT out of memory", PNG_CHUNK_WRITE_ERROR);
@@ -1182,11 +1237,11 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
{
png_chunk_report(png_ptr, "too many unknown chunks",
PNG_CHUNK_WRITE_ERROR);
-
return;
}
png_free(png_ptr, info_ptr->unknown_chunks);
+
info_ptr->unknown_chunks = np; /* safe because it is initialized */
info_ptr->free_me |= PNG_FREE_UNKN;
@@ -1249,7 +1304,7 @@ png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
{
png_app_error(png_ptr, "invalid unknown chunk location");
/* Fake out the pre 1.6.0 behavior: */
- if ((location & PNG_HAVE_IDAT) != 0) /* undocumented! */
+ if (((unsigned int)location & PNG_HAVE_IDAT) != 0) /* undocumented! */
location = PNG_AFTER_IDAT;
else
@@ -1264,7 +1319,7 @@ png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
-png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
+png_permit_mng_features(png_structrp png_ptr, png_uint_32 mng_features)
{
png_debug(1, "in png_permit_mng_features");
@@ -1337,9 +1392,10 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
/* Ignore all unknown chunks and all chunks recognized by
* libpng except for IHDR, PLTE, tRNS, IDAT, and IEND
*/
- static PNG_CONST png_byte chunks_to_ignore[] = {
+ static const png_byte chunks_to_ignore[] = {
98, 75, 71, 68, '\0', /* bKGD */
99, 72, 82, 77, '\0', /* cHRM */
+ 101, 88, 73, 102, '\0', /* eXIf */
103, 65, 77, 65, '\0', /* gAMA */
104, 73, 83, 84, '\0', /* hIST */
105, 67, 67, 80, '\0', /* iCCP */
@@ -1373,7 +1429,7 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
return;
}
- num_chunks = num_chunks_in;
+ num_chunks = (unsigned int)num_chunks_in;
}
old_num_chunks = png_ptr->num_chunk_list;
@@ -1483,7 +1539,7 @@ void PNGAPI
png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytepp row_pointers)
{
- png_debug1(1, "in %s storage function", "rows");
+ png_debug(1, "in png_set_rows");
if (png_ptr == NULL || info_ptr == NULL)
return;
@@ -1500,8 +1556,10 @@ png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
#endif
void PNGAPI
-png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size)
+png_set_compression_buffer_size(png_structrp png_ptr, size_t size)
{
+ png_debug(1, "in png_set_compression_buffer_size");
+
if (png_ptr == NULL)
return;
@@ -1563,16 +1621,18 @@ void PNGAPI
png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
{
if (png_ptr != NULL && info_ptr != NULL)
- info_ptr->valid &= ~mask;
+ info_ptr->valid &= (unsigned int)(~mask);
}
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
void PNGAPI
-png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
+png_set_user_limits(png_structrp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
+ png_debug(1, "in png_set_user_limits");
+
/* Images with dimensions larger than these limits will be
* rejected by png_set_IHDR(). To accept any PNG datastream
* regardless of dimensions, set both limits to 0x7fffffff.
@@ -1586,17 +1646,21 @@ png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
/* This function was added to libpng 1.4.0 */
void PNGAPI
-png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
+png_set_chunk_cache_max(png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
{
+ png_debug(1, "in png_set_chunk_cache_max");
+
if (png_ptr != NULL)
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
}
/* This function was added to libpng 1.4.1 */
void PNGAPI
-png_set_chunk_malloc_max (png_structrp png_ptr,
+png_set_chunk_malloc_max(png_structrp png_ptr,
png_alloc_size_t user_chunk_malloc_max)
{
+ png_debug(1, "in png_set_chunk_malloc_max");
+
if (png_ptr != NULL)
png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
}
@@ -1682,14 +1746,16 @@ png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
png_byte ch = (png_byte)*key++;
if ((ch > 32 && ch <= 126) || (ch >= 161 /*&& ch <= 255*/))
- *new_key++ = ch, ++key_len, space = 0;
+ {
+ *new_key++ = ch; ++key_len; space = 0;
+ }
else if (space == 0)
{
/* A space or an invalid character when one wasn't seen immediately
* before; output just a space.
*/
- *new_key++ = 32, ++key_len, space = 1;
+ *new_key++ = 32; ++key_len; space = 1;
/* If the character was not a space then it is invalid. */
if (ch != 32)
@@ -1702,7 +1768,7 @@ png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
if (key_len > 0 && space != 0) /* trailing space */
{
- --key_len, --new_key;
+ --key_len; --new_key;
if (bad_character == 0)
bad_character = 32;
}
diff --git a/thirdparty/libpng/pngstruct.h b/thirdparty/libpng/pngstruct.h
index 2b0eb4902..e591d94d5 100644
--- a/thirdparty/libpng/pngstruct.h
+++ b/thirdparty/libpng/pngstruct.h
@@ -1,10 +1,10 @@
/* pngstruct.h - header file for PNG reference library
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2022 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -47,7 +47,7 @@
/* zlib.h declares a magic type 'uInt' that limits the amount of data that zlib
* can handle at once. This type need be no larger than 16 bits (so maximum of
* 65535), this define allows us to discover how big it is, but limited by the
- * maximuum for png_size_t. The value can be overriden in a library build
+ * maximum for size_t. The value can be overridden in a library build
* (pngusr.h, or set it in CPPFLAGS) and it works to set it to a considerably
* lower value (e.g. 255 works). A lower value may help memory usage (slightly)
* and may even improve performance on some systems (and degrade it on others.)
@@ -214,7 +214,7 @@ struct png_struct_def
png_uint_32 height; /* height of image in pixels */
png_uint_32 num_rows; /* number of rows in current pass */
png_uint_32 usr_width; /* width of row at start of write */
- png_size_t rowbytes; /* size of row in bytes */
+ size_t rowbytes; /* size of row in bytes */
png_uint_32 iwidth; /* width of current interlaced row in pixels */
png_uint_32 row_number; /* current row in interlace pass */
png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */
@@ -232,7 +232,7 @@ struct png_struct_def
png_bytep try_row; /* buffer to save trial row when filtering */
png_bytep tst_row; /* buffer to save best trial row when filtering */
#endif
- png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */
+ size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */
png_uint_32 idat_size; /* current IDAT size for read */
png_uint_32 crc; /* current chunk CRC value */
@@ -263,7 +263,7 @@ struct png_struct_def
/* pixel depth used for the row buffers */
png_byte transformed_pixel_depth;
/* pixel depth after read/write transforms */
-#if PNG_ZLIB_VERNUM >= 0x1240
+#if ZLIB_VERNUM >= 0x1240
png_byte zstream_start; /* at start of an input zlib stream */
#endif /* Zlib >= 1.2.4 */
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
@@ -307,7 +307,7 @@ struct png_struct_def
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
- png_color_8 shift; /* shift for significant bit tranformation */
+ png_color_8 shift; /* shift for significant bit transformation */
#endif
#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
@@ -328,24 +328,14 @@ struct png_struct_def
png_bytep current_buffer; /* buffer for recently used data */
png_uint_32 push_length; /* size of current input chunk */
png_uint_32 skip_length; /* bytes to skip in input data */
- png_size_t save_buffer_size; /* amount of data now in save_buffer */
- png_size_t save_buffer_max; /* total size of save_buffer */
- png_size_t buffer_size; /* total amount of available input data */
- png_size_t current_buffer_size; /* amount of data now in current_buffer */
+ size_t save_buffer_size; /* amount of data now in save_buffer */
+ size_t save_buffer_max; /* total size of save_buffer */
+ size_t buffer_size; /* total amount of available input data */
+ size_t current_buffer_size; /* amount of data now in current_buffer */
int process_mode; /* what push library is currently doing */
int cur_palette; /* current push library palette index */
-
#endif /* PROGRESSIVE_READ */
-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* For the Borland special 64K segment handler */
- png_bytepp offset_table_ptr;
- png_bytep offset_table;
- png_uint_16 offset_table_number;
- png_uint_16 offset_table_count;
- png_uint_16 offset_table_count_free;
-#endif
-
#ifdef PNG_READ_QUANTIZE_SUPPORTED
png_bytep palette_lookup; /* lookup table for quantizing */
png_bytep quantize_index; /* index translation for palette files */
@@ -353,7 +343,7 @@ struct png_struct_def
/* Options */
#ifdef PNG_SET_OPTION_SUPPORTED
- png_byte options; /* On/off state (up to 4 options) */
+ png_uint_32 options; /* On/off state (up to 16 options) */
#endif
#if PNG_LIBPNG_VER < 10700
@@ -392,6 +382,12 @@ struct png_struct_def
/* deleted in 1.5.5: rgb_to_gray_blue_coeff; */
#endif
+/* New member added in libpng-1.6.36 */
+#if defined(PNG_READ_EXPAND_SUPPORTED) && \
+ defined(PNG_ARM_NEON_IMPLEMENTATION)
+ png_bytep riffled_palette; /* buffer for accelerated palette expansion */
+#endif
+
/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* Changed from png_byte to png_uint_32 at version 1.2.0 */
@@ -451,7 +447,7 @@ struct png_struct_def
#endif
/* New member added in libpng-1.2.26 */
- png_size_t old_big_row_buf_size;
+ size_t old_big_row_buf_size;
#ifdef PNG_READ_SUPPORTED
/* New member added in libpng-1.2.30 */
diff --git a/thirdparty/libpng/pngtrans.c b/thirdparty/libpng/pngtrans.c
index e5cbd79b9..62cb21edf 100644
--- a/thirdparty/libpng/pngtrans.c
+++ b/thirdparty/libpng/pngtrans.c
@@ -1,10 +1,10 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -103,10 +103,10 @@ png_set_interlace_handling(png_structrp png_ptr)
if (png_ptr != 0 && png_ptr->interlaced != 0)
{
png_ptr->transformations |= PNG_INTERLACE;
- return (7);
+ return 7;
}
- return (1);
+ return 1;
}
#endif
@@ -269,8 +269,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
png_bytep rp = row;
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
+ size_t i;
+ size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i++)
{
@@ -283,8 +283,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
row_info->bit_depth == 8)
{
png_bytep rp = row;
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
+ size_t i;
+ size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i += 2)
{
@@ -298,8 +298,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
row_info->bit_depth == 16)
{
png_bytep rp = row;
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
+ size_t i;
+ size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i += 4)
{
@@ -345,7 +345,7 @@ png_do_swap(png_row_infop row_info, png_bytep row)
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-static PNG_CONST png_byte onebppswaptable[256] = {
+static const png_byte onebppswaptable[256] = {
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
@@ -380,7 +380,7 @@ static PNG_CONST png_byte onebppswaptable[256] = {
0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
};
-static PNG_CONST png_byte twobppswaptable[256] = {
+static const png_byte twobppswaptable[256] = {
0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0,
0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0,
0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4,
@@ -415,7 +415,7 @@ static PNG_CONST png_byte twobppswaptable[256] = {
0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF
};
-static PNG_CONST png_byte fourbppswaptable[256] = {
+static const png_byte fourbppswaptable[256] = {
0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0,
0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,
@@ -498,6 +498,8 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
png_bytep dp = row; /* destination pointer */
png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */
+ png_debug(1, "in png_do_strip_channel");
+
/* At the start sp will point to the first byte to copy and dp to where
* it is copied to. ep always points just beyond the end of the row, so
* the loop simply copies (channels-1) channels until sp reaches ep.
@@ -514,11 +516,15 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
++sp;
else /* Skip initial channel and, for sp, the filler */
- sp += 2, ++dp;
+ {
+ sp += 2; ++dp;
+ }
/* For a 1 pixel wide image there is nothing to do */
while (sp < ep)
- *dp++ = *sp, sp += 2;
+ {
+ *dp++ = *sp; sp += 2;
+ }
row_info->pixel_depth = 8;
}
@@ -528,10 +534,14 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
sp += 2;
else /* Skip initial channel and, for sp, the filler */
- sp += 4, dp += 2;
+ {
+ sp += 4; dp += 2;
+ }
while (sp < ep)
- *dp++ = *sp++, *dp++ = *sp, sp += 3;
+ {
+ *dp++ = *sp++; *dp++ = *sp; sp += 3;
+ }
row_info->pixel_depth = 16;
}
@@ -554,11 +564,15 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
++sp;
else /* Skip initial channels and, for sp, the filler */
- sp += 4, dp += 3;
+ {
+ sp += 4; dp += 3;
+ }
/* Note that the loop adds 3 to dp and 4 to sp each time. */
while (sp < ep)
- *dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2;
+ {
+ *dp++ = *sp++; *dp++ = *sp++; *dp++ = *sp; sp += 2;
+ }
row_info->pixel_depth = 24;
}
@@ -568,14 +582,16 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
if (at_start != 0) /* Skip initial filler */
sp += 2;
else /* Skip initial channels and, for sp, the filler */
- sp += 8, dp += 6;
+ {
+ sp += 8; dp += 6;
+ }
while (sp < ep)
{
/* Copy 6 bytes, skip 2 */
- *dp++ = *sp++, *dp++ = *sp++;
- *dp++ = *sp++, *dp++ = *sp++;
- *dp++ = *sp++, *dp++ = *sp, sp += 3;
+ *dp++ = *sp++; *dp++ = *sp++;
+ *dp++ = *sp++; *dp++ = *sp++;
+ *dp++ = *sp++; *dp++ = *sp; sp += 3;
}
row_info->pixel_depth = 48;
@@ -595,7 +611,7 @@ png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
return; /* The filler channel has gone already */
/* Fix the rowbytes value. */
- row_info->rowbytes = dp-row;
+ row_info->rowbytes = (size_t)(dp-row);
}
#endif
@@ -684,6 +700,8 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
void /* PRIVATE */
png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
{
+ png_debug(1, "in png_do_check_palette_indexes");
+
if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */
{
@@ -693,7 +711,7 @@ png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
* and this calculation is used because it avoids warnings that other
* forms produced on either GCC or MSVC.
*/
- int padding = (-row_info->pixel_depth * row_info->width) & 7;
+ int padding = PNG_PADBITS(row_info->pixel_depth, row_info->width);
png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
switch (row_info->bit_depth)
@@ -819,7 +837,7 @@ png_voidp PNGAPI
png_get_user_transform_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
- return (NULL);
+ return NULL;
return png_ptr->user_transform_ptr;
}
diff --git a/thirdparty/libpng/pngwio.c b/thirdparty/libpng/pngwio.c
index 37c7c3a7f..10e919dd0 100644
--- a/thirdparty/libpng/pngwio.c
+++ b/thirdparty/libpng/pngwio.c
@@ -1,10 +1,10 @@
/* pngwio.c - functions for data output
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2014,2016,2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -30,7 +30,7 @@
*/
void /* PRIVATE */
-png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
+png_write_data(png_structrp png_ptr, png_const_bytep data, size_t length)
{
/* NOTE: write_data_fn must not change the buffer! */
if (png_ptr->write_data_fn != NULL )
@@ -48,9 +48,9 @@ png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
* than changing the library.
*/
void PNGCBAPI
-png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
+png_default_write_data(png_structp png_ptr, png_bytep data, size_t length)
{
- png_size_t check;
+ size_t check;
if (png_ptr == NULL)
return;
diff --git a/thirdparty/libpng/pngwrite.c b/thirdparty/libpng/pngwrite.c
index aaa2b017d..77e412f43 100644
--- a/thirdparty/libpng/pngwrite.c
+++ b/thirdparty/libpng/pngwrite.c
@@ -1,10 +1,10 @@
/* pngwrite.c - general routines to write a PNG file
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -75,10 +75,10 @@ write_unknown_chunks(png_structrp png_ptr, png_const_inforp info_ptr,
* library. If you have a new chunk to add, make a function to write it,
* and put it in the correct location here. If you want the chunk written
* after the image data, put it in png_write_end(). I strongly encourage
- * you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing
- * the chunk, as that will keep the code from breaking if you want to just
- * write a plain PNG file. If you have long comments, I suggest writing
- * them in png_write_end(), and compressing them.
+ * you to supply a PNG_INFO_ flag, and check info_ptr->valid before
+ * writing the chunk, as that will keep the code from breaking if you want
+ * to just write a plain PNG file. If you have long comments, I suggest
+ * writing them in png_write_end(), and compressing them.
*/
void PNGAPI
png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
@@ -237,6 +237,14 @@ png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
#endif
+#ifdef PNG_WRITE_eXIf_SUPPORTED
+ if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
+ {
+ png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
+ png_ptr->mode |= PNG_WROTE_eXIf;
+ }
+#endif
+
#ifdef PNG_WRITE_hIST_SUPPORTED
if ((info_ptr->valid & PNG_INFO_hIST) != 0)
png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
@@ -361,7 +369,8 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
png_error(png_ptr, "No IDATs written into file");
#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
- if (png_ptr->num_palette_max > png_ptr->num_palette)
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ png_ptr->num_palette_max >= png_ptr->num_palette)
png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
#endif
@@ -432,6 +441,13 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
}
}
#endif
+
+#ifdef PNG_WRITE_eXIf_SUPPORTED
+ if ((info_ptr->valid & PNG_INFO_eXIf) != 0 &&
+ (png_ptr->mode & PNG_WROTE_eXIf) == 0)
+ png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
+#endif
+
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
write_unknown_chunks(png_ptr, info_ptr, PNG_AFTER_IDAT);
#endif
@@ -458,7 +474,7 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
#ifdef PNG_CONVERT_tIME_SUPPORTED
void PNGAPI
-png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm * ttime)
+png_convert_from_struct_tm(png_timep ptime, const struct tm * ttime)
{
png_debug(1, "in png_convert_from_struct_tm");
@@ -478,6 +494,16 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
png_debug(1, "in png_convert_from_time_t");
tbuf = gmtime(&ttime);
+ if (tbuf == NULL)
+ {
+ /* TODO: add a safe function which takes a png_ptr argument and raises
+ * a png_error if the ttime argument is invalid and the call to gmtime
+ * fails as a consequence.
+ */
+ memset(ptime, 0, sizeof(*ptime));
+ return;
+ }
+
png_convert_from_struct_tm(ptime, tbuf);
}
#endif
@@ -666,9 +692,9 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
- png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
- png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
- png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
+ png_uint_32 s0 = (png_uint_32)(*(rp ) << 8) | *(rp + 1);
+ png_uint_32 s1 = (png_uint_32)(*(rp + 2) << 8) | *(rp + 3);
+ png_uint_32 s2 = (png_uint_32)(*(rp + 4) << 8) | *(rp + 5);
png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL);
png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL);
*(rp ) = (png_byte)(red >> 8);
@@ -689,12 +715,12 @@ png_write_row(png_structrp png_ptr, png_const_bytep row)
/* 1.5.6: moved from png_struct to be a local structure: */
png_row_info row_info;
- if (png_ptr == NULL)
- return;
-
png_debug2(1, "in png_write_row (row %u, pass %d)",
png_ptr->row_number, png_ptr->pass);
+ if (png_ptr == NULL)
+ return;
+
/* Initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
@@ -901,7 +927,7 @@ png_set_flush(png_structrp png_ptr, int nrows)
if (png_ptr == NULL)
return;
- png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
+ png_ptr->flush_dist = (nrows < 0 ? 0 : (png_uint_32)nrows);
}
/* Flush the current output buffers now */
@@ -1007,8 +1033,8 @@ png_set_filter(png_structrp png_ptr, int method, int filters)
case 5:
case 6:
case 7: png_app_error(png_ptr, "Unknown row filter for method 0");
- /* FALL THROUGH */
#endif /* WRITE_FILTER */
+ /* FALLTHROUGH */
case PNG_FILTER_VALUE_NONE:
png_ptr->do_filter = PNG_FILTER_NONE; break;
@@ -1185,6 +1211,8 @@ png_set_compression_strategy(png_structrp png_ptr, int strategy)
void PNGAPI
png_set_compression_window_bits(png_structrp png_ptr, int window_bits)
{
+ png_debug(1, "in png_set_compression_window_bits");
+
if (png_ptr == NULL)
return;
@@ -1268,6 +1296,8 @@ png_set_text_compression_strategy(png_structrp png_ptr, int strategy)
void PNGAPI
png_set_text_compression_window_bits(png_structrp png_ptr, int window_bits)
{
+ png_debug(1, "in png_set_text_compression_window_bits");
+
if (png_ptr == NULL)
return;
@@ -1305,6 +1335,8 @@ png_set_text_compression_method(png_structrp png_ptr, int method)
void PNGAPI
png_set_write_status_fn(png_structrp png_ptr, png_write_status_ptr write_row_fn)
{
+ png_debug(1, "in png_set_write_status_fn");
+
if (png_ptr == NULL)
return;
@@ -1332,6 +1364,8 @@ void PNGAPI
png_write_png(png_structrp png_ptr, png_inforp info_ptr,
int transforms, voidp params)
{
+ png_debug(1, "in png_write_png");
+
if (png_ptr == NULL || info_ptr == NULL)
return;
@@ -1525,7 +1559,8 @@ png_write_image_16bit(png_voidp argument)
display->first_row);
png_uint_16p output_row = png_voidcast(png_uint_16p, display->local_row);
png_uint_16p row_end;
- const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ? 3 : 1;
+ unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ?
+ 3 : 1;
int aindex = 0;
png_uint_32 y = image->height;
@@ -1539,9 +1574,9 @@ png_write_image_16bit(png_voidp argument)
++output_row;
}
else
- aindex = channels;
+ aindex = (int)channels;
# else
- aindex = channels;
+ aindex = (int)channels;
# endif
}
@@ -1554,14 +1589,14 @@ png_write_image_16bit(png_voidp argument)
*/
row_end = output_row + image->width * (channels+1);
- while (y-- > 0)
+ for (; y > 0; --y)
{
png_const_uint_16p in_ptr = input_row;
png_uint_16p out_ptr = output_row;
while (out_ptr < row_end)
{
- const png_uint_16 alpha = in_ptr[aindex];
+ png_uint_16 alpha = in_ptr[aindex];
png_uint_32 reciprocal = 0;
int c;
@@ -1575,7 +1610,7 @@ png_write_image_16bit(png_voidp argument)
if (alpha > 0 && alpha < 65535)
reciprocal = ((0xffff<<15)+(alpha>>1))/alpha;
- c = channels;
+ c = (int)channels;
do /* always at least one channel */
{
png_uint_16 component = *in_ptr++;
@@ -1610,7 +1645,7 @@ png_write_image_16bit(png_voidp argument)
}
png_write_row(png_ptr, png_voidcast(png_const_bytep, display->local_row));
- input_row += display->row_bytes/(sizeof (png_uint_16));
+ input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16));
}
return 1;
@@ -1624,7 +1659,7 @@ png_write_image_16bit(png_voidp argument)
* calculation can be done to 15 bits of accuracy; however, the output needs to
* be scaled in the range 0..255*65535, so include that scaling here.
*/
-# define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+(alpha>>1))/alpha)
+# define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+((alpha)>>1))/(alpha))
static png_byte
png_unpremultiply(png_uint_32 component, png_uint_32 alpha,
@@ -1683,7 +1718,8 @@ png_write_image_8bit(png_voidp argument)
display->first_row);
png_bytep output_row = png_voidcast(png_bytep, display->local_row);
png_uint_32 y = image->height;
- const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ? 3 : 1;
+ unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ?
+ 3 : 1;
if ((image->format & PNG_FORMAT_FLAG_ALPHA) != 0)
{
@@ -1700,12 +1736,12 @@ png_write_image_8bit(png_voidp argument)
else
# endif
- aindex = channels;
+ aindex = (int)channels;
/* Use row_end in place of a loop counter: */
row_end = output_row + image->width * (channels+1);
- while (y-- > 0)
+ for (; y > 0; --y)
{
png_const_uint_16p in_ptr = input_row;
png_bytep out_ptr = output_row;
@@ -1723,7 +1759,7 @@ png_write_image_8bit(png_voidp argument)
if (alphabyte > 0 && alphabyte < 255)
reciprocal = UNP_RECIPROCAL(alpha);
- c = channels;
+ c = (int)channels;
do /* always at least one channel */
*out_ptr++ = png_unpremultiply(*in_ptr++, alpha, reciprocal);
while (--c > 0);
@@ -1735,7 +1771,7 @@ png_write_image_8bit(png_voidp argument)
png_write_row(png_ptr, png_voidcast(png_const_bytep,
display->local_row));
- input_row += display->row_bytes/(sizeof (png_uint_16));
+ input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16));
} /* while y */
}
@@ -1746,7 +1782,7 @@ png_write_image_8bit(png_voidp argument)
*/
png_bytep row_end = output_row + image->width * channels;
- while (y-- > 0)
+ for (; y > 0; --y)
{
png_const_uint_16p in_ptr = input_row;
png_bytep out_ptr = output_row;
@@ -1760,7 +1796,7 @@ png_write_image_8bit(png_voidp argument)
}
png_write_row(png_ptr, output_row);
- input_row += display->row_bytes/(sizeof (png_uint_16));
+ input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16));
}
}
@@ -1770,25 +1806,25 @@ png_write_image_8bit(png_voidp argument)
static void
png_image_set_PLTE(png_image_write_control *display)
{
- const png_imagep image = display->image;
+ png_imagep image = display->image;
const void *cmap = display->colormap;
- const int entries = image->colormap_entries > 256 ? 256 :
+ int entries = image->colormap_entries > 256 ? 256 :
(int)image->colormap_entries;
/* NOTE: the caller must check for cmap != NULL and entries != 0 */
- const png_uint_32 format = image->format;
- const int channels = PNG_IMAGE_SAMPLE_CHANNELS(format);
+ png_uint_32 format = image->format;
+ unsigned int channels = PNG_IMAGE_SAMPLE_CHANNELS(format);
# if defined(PNG_FORMAT_BGR_SUPPORTED) &&\
defined(PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED)
- const int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
+ int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
(format & PNG_FORMAT_FLAG_ALPHA) != 0;
# else
# define afirst 0
# endif
# ifdef PNG_FORMAT_BGR_SUPPORTED
- const int bgr = (format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0;
+ int bgr = (format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0;
# else
# define bgr 0
# endif
@@ -1809,7 +1845,7 @@ png_image_set_PLTE(png_image_write_control *display)
{
png_const_uint_16p entry = png_voidcast(png_const_uint_16p, cmap);
- entry += i * channels;
+ entry += (unsigned int)i * channels;
if ((channels & 1) != 0) /* no alpha */
{
@@ -1865,7 +1901,7 @@ png_image_set_PLTE(png_image_write_control *display)
{
png_const_bytep entry = png_voidcast(png_const_bytep, cmap);
- entry += i * channels;
+ entry += (unsigned int)i * channels;
switch (channels)
{
@@ -1873,7 +1909,7 @@ png_image_set_PLTE(png_image_write_control *display)
tRNS[i] = entry[afirst ? 0 : 3];
if (tRNS[i] < 255)
num_trans = i+1;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 3:
palette[i].blue = entry[afirst + (2 ^ bgr)];
palette[i].green = entry[afirst + 1];
@@ -1884,7 +1920,7 @@ png_image_set_PLTE(png_image_write_control *display)
tRNS[i] = entry[1 ^ afirst];
if (tRNS[i] < 255)
num_trans = i+1;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case 1:
palette[i].blue = palette[i].red = palette[i].green =
entry[afirst];
@@ -1910,7 +1946,7 @@ png_image_set_PLTE(png_image_write_control *display)
png_set_tRNS(image->opaque->png_ptr, image->opaque->info_ptr, tRNS,
num_trans, NULL);
- image->colormap_entries = entries;
+ image->colormap_entries = (png_uint_32)entries;
}
static int
@@ -1927,7 +1963,7 @@ png_image_write_main(png_voidp argument)
int colormap = (format & PNG_FORMAT_FLAG_COLORMAP);
int linear = !colormap && (format & PNG_FORMAT_FLAG_LINEAR); /* input */
int alpha = !colormap && (format & PNG_FORMAT_FLAG_ALPHA);
- int write_16bit = linear && !colormap && (display->convert_to_8bit == 0);
+ int write_16bit = linear && (display->convert_to_8bit == 0);
# ifdef PNG_BENIGN_ERRORS_SUPPORTED
/* Make sure we error out on any bad situation */
@@ -1938,21 +1974,21 @@ png_image_write_main(png_voidp argument)
* and total image size to ensure that they are within the system limits.
*/
{
- const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
+ unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
- if (image->width <= 0x7FFFFFFFU/channels) /* no overflow */
+ if (image->width <= 0x7fffffffU/channels) /* no overflow */
{
png_uint_32 check;
- const png_uint_32 png_row_stride = image->width * channels;
+ png_uint_32 png_row_stride = image->width * channels;
if (display->row_stride == 0)
display->row_stride = (png_int_32)/*SAFE*/png_row_stride;
if (display->row_stride < 0)
- check = -display->row_stride;
+ check = (png_uint_32)(-display->row_stride);
else
- check = display->row_stride;
+ check = (png_uint_32)display->row_stride;
if (check >= png_row_stride)
{
@@ -1960,7 +1996,7 @@ png_image_write_main(png_voidp argument)
* limits the whole image size to 32 bits for API compatibility with
* the current, 32-bit, PNG_IMAGE_BUFFER_SIZE macro.
*/
- if (image->height > 0xFFFFFFFF/png_row_stride)
+ if (image->height > 0xffffffffU/png_row_stride)
png_error(image->opaque->png_ptr, "memory image too large");
}
@@ -2039,7 +2075,7 @@ png_image_write_main(png_voidp argument)
*/
if (write_16bit != 0)
{
- PNG_CONST png_uint_16 le = 0x0001;
+ png_uint_16 le = 0x0001;
if ((*(png_const_bytep) & le) != 0)
png_set_swap(png_ptr);
@@ -2136,7 +2172,7 @@ png_image_write_main(png_voidp argument)
ptrdiff_t row_bytes = display->row_bytes;
png_uint_32 y = image->height;
- while (y-- > 0)
+ for (; y > 0; --y)
{
png_write_row(png_ptr, row);
row += row_bytes;
@@ -2149,12 +2185,11 @@ png_image_write_main(png_voidp argument)
static void (PNGCBAPI
-image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data,
- png_size_t size)
+image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data, size_t size)
{
png_image_write_control *display = png_voidcast(png_image_write_control*,
png_ptr->io_ptr/*backdoor: png_get_io_ptr(png_ptr)*/);
- const png_alloc_size_t ob = display->output_bytes;
+ png_alloc_size_t ob = display->output_bytes;
/* Check for overflow; this should never happen: */
if (size <= ((png_alloc_size_t)-1) - ob)
diff --git a/thirdparty/libpng/pngwtran.c b/thirdparty/libpng/pngwtran.c
index 423fb2d5b..49a13c1e9 100644
--- a/thirdparty/libpng/pngwtran.c
+++ b/thirdparty/libpng/pngwtran.c
@@ -1,10 +1,10 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -177,7 +177,7 @@ png_do_shift(png_row_infop row_info, png_bytep row,
if (row_info->color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift_start[4], shift_dec[4];
- int channels = 0;
+ unsigned int channels = 0;
if ((row_info->color_type & PNG_COLOR_MASK_COLOR) != 0)
{
@@ -212,9 +212,9 @@ png_do_shift(png_row_infop row_info, png_bytep row,
if (row_info->bit_depth < 8)
{
png_bytep bp = row;
- png_size_t i;
+ size_t i;
unsigned int mask;
- png_size_t row_bytes = row_info->rowbytes;
+ size_t row_bytes = row_info->rowbytes;
if (bit_depth->gray == 1 && row_info->bit_depth == 2)
mask = 0x55;
@@ -254,8 +254,7 @@ png_do_shift(png_row_infop row_info, png_bytep row,
for (i = 0; i < istop; i++, bp++)
{
-
- const unsigned int c = i%channels;
+ unsigned int c = i%channels;
int j;
unsigned int v, out;
@@ -283,7 +282,7 @@ png_do_shift(png_row_infop row_info, png_bytep row,
for (bp = row, i = 0; i < istop; i++)
{
- const unsigned int c = i%channels;
+ unsigned int c = i%channels;
int j;
unsigned int value, v;
@@ -514,7 +513,7 @@ png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
(png_ptr, /* png_ptr */
row_info, /* row_info: */
/* png_uint_32 width; width of row */
- /* png_size_t rowbytes; number of bytes in row */
+ /* size_t rowbytes; number of bytes in row */
/* png_byte color_type; color type of pixels */
/* png_byte bit_depth; bit depth of samples */
/* png_byte channels; number of channels (1-4) */
diff --git a/thirdparty/libpng/pngwutil.c b/thirdparty/libpng/pngwutil.c
index 3f1ed0cc8..14cc4ce36 100644
--- a/thirdparty/libpng/pngwutil.c
+++ b/thirdparty/libpng/pngwutil.c
@@ -1,10 +1,10 @@
/* pngwutil.c - utilities to write a PNG file
*
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -59,7 +59,7 @@ png_write_sig(png_structrp png_ptr)
/* Write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
- (png_size_t)(8 - png_ptr->sig_bytes));
+ (size_t)(8 - png_ptr->sig_bytes));
if (png_ptr->sig_bytes < 3)
png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
@@ -124,8 +124,7 @@ png_write_chunk_start(png_structrp png_ptr, png_const_bytep chunk_string,
* given to png_write_chunk_header().
*/
void PNGAPI
-png_write_chunk_data(png_structrp png_ptr, png_const_bytep data,
- png_size_t length)
+png_write_chunk_data(png_structrp png_ptr, png_const_bytep data, size_t length)
{
/* Write the data, and run the CRC over it */
if (png_ptr == NULL)
@@ -160,7 +159,7 @@ png_write_chunk_end(png_structrp png_ptr)
/* Write the crc in a single operation */
png_save_uint_32(buf, png_ptr->crc);
- png_write_data(png_ptr, buf, (png_size_t)4);
+ png_write_data(png_ptr, buf, 4);
}
/* Write a PNG chunk all at once. The type is an array of ASCII characters
@@ -174,7 +173,7 @@ png_write_chunk_end(png_structrp png_ptr)
*/
static void
png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
- png_const_bytep data, png_size_t length)
+ png_const_bytep data, size_t length)
{
if (png_ptr == NULL)
return;
@@ -191,7 +190,7 @@ png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
/* This is the API that calls the internal function above. */
void PNGAPI
png_write_chunk(png_structrp png_ptr, png_const_bytep chunk_string,
- png_const_bytep data, png_size_t length)
+ png_const_bytep data, size_t length)
{
png_write_complete_chunk(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), data,
length);
@@ -408,7 +407,7 @@ png_deflate_claim(png_structrp png_ptr, png_uint_32 owner,
png_ptr->zstream.avail_out = 0;
/* Now initialize if required, setting the new parameters, otherwise just
- * to a simple reset to the previous parameters.
+ * do a simple reset to the previous parameters.
*/
if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0)
ret = deflateReset(&png_ptr->zstream);
@@ -675,6 +674,7 @@ png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
int interlace_type)
{
png_byte buf[13]; /* Buffer to store the IHDR info */
+ int is_invalid_depth;
png_debug(1, "in png_write_IHDR");
@@ -700,11 +700,11 @@ png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
break;
case PNG_COLOR_TYPE_RGB:
+ is_invalid_depth = (bit_depth != 8);
#ifdef PNG_WRITE_16BIT_SUPPORTED
- if (bit_depth != 8 && bit_depth != 16)
-#else
- if (bit_depth != 8)
+ is_invalid_depth = (is_invalid_depth && bit_depth != 16);
#endif
+ if (is_invalid_depth)
png_error(png_ptr, "Invalid bit depth for RGB image");
png_ptr->channels = 3;
@@ -726,18 +726,22 @@ png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
break;
case PNG_COLOR_TYPE_GRAY_ALPHA:
- if (bit_depth != 8 && bit_depth != 16)
+ is_invalid_depth = (bit_depth != 8);
+#ifdef PNG_WRITE_16BIT_SUPPORTED
+ is_invalid_depth = (is_invalid_depth && bit_depth != 16);
+#endif
+ if (is_invalid_depth)
png_error(png_ptr, "Invalid bit depth for grayscale+alpha image");
png_ptr->channels = 2;
break;
case PNG_COLOR_TYPE_RGB_ALPHA:
+ is_invalid_depth = (bit_depth != 8);
#ifdef PNG_WRITE_16BIT_SUPPORTED
- if (bit_depth != 8 && bit_depth != 16)
-#else
- if (bit_depth != 8)
+ is_invalid_depth = (is_invalid_depth && bit_depth != 16);
#endif
+ if (is_invalid_depth)
png_error(png_ptr, "Invalid bit depth for RGBA image");
png_ptr->channels = 4;
@@ -815,7 +819,7 @@ png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
buf[12] = (png_byte)interlace_type;
/* Write the chunk */
- png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
+ png_write_complete_chunk(png_ptr, png_IHDR, buf, 13);
if ((png_ptr->do_filter) == PNG_NO_FILTERS)
{
@@ -884,7 +888,7 @@ png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
buf[0] = pal_ptr->red;
buf[1] = pal_ptr->green;
buf[2] = pal_ptr->blue;
- png_write_chunk_data(png_ptr, buf, (png_size_t)3);
+ png_write_chunk_data(png_ptr, buf, 3);
}
#else
@@ -898,7 +902,7 @@ png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
buf[0] = pal_ptr[i].red;
buf[1] = pal_ptr[i].green;
buf[2] = pal_ptr[i].blue;
- png_write_chunk_data(png_ptr, buf, (png_size_t)3);
+ png_write_chunk_data(png_ptr, buf, 3);
}
#endif
@@ -998,7 +1002,8 @@ png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
optimize_cmf(data, png_image_size(png_ptr));
#endif
- png_write_complete_chunk(png_ptr, png_IDAT, data, size);
+ if (size > 0)
+ png_write_complete_chunk(png_ptr, png_IDAT, data, size);
png_ptr->mode |= PNG_HAVE_IDAT;
png_ptr->zstream.next_out = data;
@@ -1044,7 +1049,8 @@ png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
optimize_cmf(data, png_image_size(png_ptr));
#endif
- png_write_complete_chunk(png_ptr, png_IDAT, data, size);
+ if (size > 0)
+ png_write_complete_chunk(png_ptr, png_IDAT, data, size);
png_ptr->zstream.avail_out = 0;
png_ptr->zstream.next_out = NULL;
png_ptr->mode |= PNG_HAVE_IDAT | PNG_AFTER_IDAT;
@@ -1068,7 +1074,7 @@ png_write_IEND(png_structrp png_ptr)
{
png_debug(1, "in png_write_IEND");
- png_write_complete_chunk(png_ptr, png_IEND, NULL, (png_size_t)0);
+ png_write_complete_chunk(png_ptr, png_IEND, NULL, 0);
png_ptr->mode |= PNG_HAVE_IEND;
}
@@ -1083,7 +1089,7 @@ png_write_gAMA_fixed(png_structrp png_ptr, png_fixed_point file_gamma)
/* file_gamma is saved in 1/100,000ths */
png_save_uint_32(buf, (png_uint_32)file_gamma);
- png_write_complete_chunk(png_ptr, png_gAMA, buf, (png_size_t)4);
+ png_write_complete_chunk(png_ptr, png_gAMA, buf, 4);
}
#endif
@@ -1101,7 +1107,7 @@ png_write_sRGB(png_structrp png_ptr, int srgb_intent)
"Invalid sRGB rendering intent specified");
buf[0]=(png_byte)srgb_intent;
- png_write_complete_chunk(png_ptr, png_sRGB, buf, (png_size_t)1);
+ png_write_complete_chunk(png_ptr, png_sRGB, buf, 1);
}
#endif
@@ -1175,8 +1181,8 @@ png_write_sPLT(png_structrp png_ptr, png_const_sPLT_tp spalette)
png_uint_32 name_len;
png_byte new_name[80];
png_byte entrybuf[10];
- png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
- png_size_t palette_size = entry_size * spalette->nentries;
+ size_t entry_size = (spalette->depth == 8 ? 6 : 10);
+ size_t palette_size = entry_size * (size_t)spalette->nentries;
png_sPLT_entryp ep;
#ifndef PNG_POINTER_INDEXING_SUPPORTED
int i;
@@ -1193,10 +1199,9 @@ png_write_sPLT(png_structrp png_ptr, png_const_sPLT_tp spalette)
png_write_chunk_header(png_ptr, png_sPLT,
(png_uint_32)(name_len + 2 + palette_size));
- png_write_chunk_data(png_ptr, (png_bytep)new_name,
- (png_size_t)(name_len + 1));
+ png_write_chunk_data(png_ptr, (png_bytep)new_name, (size_t)(name_len + 1));
- png_write_chunk_data(png_ptr, &spalette->depth, (png_size_t)1);
+ png_write_chunk_data(png_ptr, &spalette->depth, 1);
/* Loop through each palette entry, writing appropriately */
#ifdef PNG_POINTER_INDEXING_SUPPORTED
@@ -1258,7 +1263,7 @@ void /* PRIVATE */
png_write_sBIT(png_structrp png_ptr, png_const_color_8p sbit, int color_type)
{
png_byte buf[4];
- png_size_t size;
+ size_t size;
png_debug(1, "in png_write_sBIT");
@@ -1358,7 +1363,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
/* Write the chunk out as it is */
png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha,
- (png_size_t)num_trans);
+ (size_t)num_trans);
}
else if (color_type == PNG_COLOR_TYPE_GRAY)
@@ -1373,7 +1378,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
}
png_save_uint_16(buf, tran->gray);
- png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)2);
+ png_write_complete_chunk(png_ptr, png_tRNS, buf, 2);
}
else if (color_type == PNG_COLOR_TYPE_RGB)
@@ -1393,7 +1398,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
return;
}
- png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)6);
+ png_write_complete_chunk(png_ptr, png_tRNS, buf, 6);
}
else
@@ -1426,7 +1431,7 @@ png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
}
buf[0] = back->index;
- png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)1);
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, 1);
}
else if ((color_type & PNG_COLOR_MASK_COLOR) != 0)
@@ -1447,7 +1452,7 @@ png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
return;
}
- png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)6);
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, 6);
}
else
@@ -1461,8 +1466,30 @@ png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
}
png_save_uint_16(buf, back->gray);
- png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)2);
+ png_write_complete_chunk(png_ptr, png_bKGD, buf, 2);
+ }
+}
+#endif
+
+#ifdef PNG_WRITE_eXIf_SUPPORTED
+/* Write the Exif data */
+void /* PRIVATE */
+png_write_eXIf(png_structrp png_ptr, png_bytep exif, int num_exif)
+{
+ int i;
+ png_byte buf[1];
+
+ png_debug(1, "in png_write_eXIf");
+
+ png_write_chunk_header(png_ptr, png_eXIf, (png_uint_32)(num_exif));
+
+ for (i = 0; i < num_exif; i++)
+ {
+ buf[0] = exif[i];
+ png_write_chunk_data(png_ptr, buf, 1);
}
+
+ png_write_chunk_end(png_ptr);
}
#endif
@@ -1490,7 +1517,7 @@ png_write_hIST(png_structrp png_ptr, png_const_uint_16p hist, int num_hist)
for (i = 0; i < num_hist; i++)
{
png_save_uint_16(buf, hist[i]);
- png_write_chunk_data(png_ptr, buf, (png_size_t)2);
+ png_write_chunk_data(png_ptr, buf, 2);
}
png_write_chunk_end(png_ptr);
@@ -1501,7 +1528,7 @@ png_write_hIST(png_structrp png_ptr, png_const_uint_16p hist, int num_hist)
/* Write a tEXt chunk */
void /* PRIVATE */
png_write_tEXt(png_structrp png_ptr, png_const_charp key, png_const_charp text,
- png_size_t text_len)
+ size_t text_len)
{
png_uint_32 key_len;
png_byte new_key[80];
@@ -1598,7 +1625,7 @@ png_write_iTXt(png_structrp png_ptr, int compression, png_const_charp key,
png_const_charp lang, png_const_charp lang_key, png_const_charp text)
{
png_uint_32 key_len, prefix_len;
- png_size_t lang_len, lang_key_len;
+ size_t lang_len, lang_key_len;
png_byte new_key[82];
compression_state comp;
@@ -1708,7 +1735,7 @@ png_write_oFFs(png_structrp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
png_save_int_32(buf + 4, y_offset);
buf[8] = (png_byte)unit_type;
- png_write_complete_chunk(png_ptr, png_oFFs, buf, (png_size_t)9);
+ png_write_complete_chunk(png_ptr, png_oFFs, buf, 9);
}
#endif
#ifdef PNG_WRITE_pCAL_SUPPORTED
@@ -1719,8 +1746,8 @@ png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
png_charpp params)
{
png_uint_32 purpose_len;
- png_size_t units_len, total_len;
- png_size_tp params_len;
+ size_t units_len, total_len;
+ size_t *params_len;
png_byte buf[10];
png_byte new_purpose[80];
int i;
@@ -1742,8 +1769,8 @@ png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
png_debug1(3, "pCAL units length = %d", (int)units_len);
total_len = purpose_len + units_len + 10;
- params_len = (png_size_tp)png_malloc(png_ptr,
- (png_alloc_size_t)(nparams * (sizeof (png_size_t))));
+ params_len = (size_t *)png_malloc(png_ptr,
+ (png_alloc_size_t)((png_alloc_size_t)nparams * (sizeof (size_t))));
/* Find the length of each parameter, making sure we don't count the
* null terminator for the last parameter.
@@ -1763,8 +1790,8 @@ png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
png_save_int_32(buf + 4, X1);
buf[8] = (png_byte)type;
buf[9] = (png_byte)nparams;
- png_write_chunk_data(png_ptr, buf, (png_size_t)10);
- png_write_chunk_data(png_ptr, (png_const_bytep)units, (png_size_t)units_len);
+ png_write_chunk_data(png_ptr, buf, 10);
+ png_write_chunk_data(png_ptr, (png_const_bytep)units, (size_t)units_len);
for (i = 0; i < nparams; i++)
{
@@ -1783,7 +1810,7 @@ png_write_sCAL_s(png_structrp png_ptr, int unit, png_const_charp width,
png_const_charp height)
{
png_byte buf[64];
- png_size_t wlen, hlen, total_len;
+ size_t wlen, hlen, total_len;
png_debug(1, "in png_write_sCAL_s");
@@ -1824,7 +1851,7 @@ png_write_pHYs(png_structrp png_ptr, png_uint_32 x_pixels_per_unit,
png_save_uint_32(buf + 4, y_pixels_per_unit);
buf[8] = (png_byte)unit_type;
- png_write_complete_chunk(png_ptr, png_pHYs, buf, (png_size_t)9);
+ png_write_complete_chunk(png_ptr, png_pHYs, buf, 9);
}
#endif
@@ -1854,7 +1881,7 @@ png_write_tIME(png_structrp png_ptr, png_const_timep mod_time)
buf[5] = mod_time->minute;
buf[6] = mod_time->second;
- png_write_complete_chunk(png_ptr, png_tIME, buf, (png_size_t)7);
+ png_write_complete_chunk(png_ptr, png_tIME, buf, 7);
}
#endif
@@ -1866,16 +1893,16 @@ png_write_start_row(png_structrp png_ptr)
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static const png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static const png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static const png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
png_alloc_size_t buf_size;
@@ -1981,16 +2008,16 @@ png_write_finish_row(png_structrp png_ptr)
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static const png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
+ static const png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+ static const png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
png_debug(1, "in png_write_finish_row");
@@ -2044,8 +2071,8 @@ png_write_finish_row(png_structrp png_ptr)
{
if (png_ptr->prev_row != NULL)
memset(png_ptr->prev_row, 0,
- (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
- png_ptr->usr_bit_depth, png_ptr->width)) + 1);
+ PNG_ROWBYTES(png_ptr->usr_channels *
+ png_ptr->usr_bit_depth, png_ptr->width) + 1);
return;
}
@@ -2071,10 +2098,10 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
+ static const png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
+ static const png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
png_debug(1, "in png_do_write_interlace");
@@ -2101,7 +2128,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
for (i = png_pass_start[pass]; i < row_width;
i += png_pass_inc[pass])
{
- sp = row + (png_size_t)(i >> 3);
+ sp = row + (size_t)(i >> 3);
value = (int)(*sp >> (7 - (int)(i & 0x07))) & 0x01;
d |= (value << shift);
@@ -2139,7 +2166,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
for (i = png_pass_start[pass]; i < row_width;
i += png_pass_inc[pass])
{
- sp = row + (png_size_t)(i >> 2);
+ sp = row + (size_t)(i >> 2);
value = (*sp >> ((3 - (int)(i & 0x03)) << 1)) & 0x03;
d |= (value << shift);
@@ -2175,7 +2202,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
for (i = png_pass_start[pass]; i < row_width;
i += png_pass_inc[pass])
{
- sp = row + (png_size_t)(i >> 1);
+ sp = row + (size_t)(i >> 1);
value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f;
d |= (value << shift);
@@ -2201,7 +2228,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
png_bytep dp;
png_uint_32 i;
png_uint_32 row_width = row_info->width;
- png_size_t pixel_bytes;
+ size_t pixel_bytes;
/* Start at the beginning */
dp = row;
@@ -2214,7 +2241,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
i += png_pass_inc[pass])
{
/* Find out where the original pixel is */
- sp = row + (png_size_t)i * pixel_bytes;
+ sp = row + (size_t)i * pixel_bytes;
/* Move the pixel */
if (dp != sp)
@@ -2245,17 +2272,17 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
*/
static void /* PRIVATE */
png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
- png_size_t row_bytes);
+ size_t row_bytes);
#ifdef PNG_WRITE_FILTER_SUPPORTED
-static png_size_t /* PRIVATE */
-png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
- const png_size_t row_bytes, const png_size_t lmins)
+static size_t /* PRIVATE */
+png_setup_sub_row(png_structrp png_ptr, png_uint_32 bpp,
+ size_t row_bytes, size_t lmins)
{
png_bytep rp, dp, lp;
- png_size_t i;
- png_size_t sum = 0;
- int v;
+ size_t i;
+ size_t sum = 0;
+ unsigned int v;
png_ptr->try_row[0] = PNG_FILTER_VALUE_SUB;
@@ -2264,7 +2291,7 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
{
v = *dp = *rp;
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2275,7 +2302,7 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
{
v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2284,15 +2311,15 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
break;
}
- return (sum);
+ return sum;
}
static void /* PRIVATE */
-png_setup_sub_row_only(png_structrp png_ptr, const png_uint_32 bpp,
- const png_size_t row_bytes)
+png_setup_sub_row_only(png_structrp png_ptr, png_uint_32 bpp,
+ size_t row_bytes)
{
png_bytep rp, dp, lp;
- png_size_t i;
+ size_t i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_SUB;
@@ -2309,14 +2336,13 @@ png_setup_sub_row_only(png_structrp png_ptr, const png_uint_32 bpp,
}
}
-static png_size_t /* PRIVATE */
-png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
- const png_size_t lmins)
+static size_t /* PRIVATE */
+png_setup_up_row(png_structrp png_ptr, size_t row_bytes, size_t lmins)
{
png_bytep rp, dp, pp;
- png_size_t i;
- png_size_t sum = 0;
- int v;
+ size_t i;
+ size_t sum = 0;
+ unsigned int v;
png_ptr->try_row[0] = PNG_FILTER_VALUE_UP;
@@ -2326,7 +2352,7 @@ png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
{
v = *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2335,13 +2361,13 @@ png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
break;
}
- return (sum);
+ return sum;
}
static void /* PRIVATE */
-png_setup_up_row_only(png_structrp png_ptr, const png_size_t row_bytes)
+png_setup_up_row_only(png_structrp png_ptr, size_t row_bytes)
{
png_bytep rp, dp, pp;
- png_size_t i;
+ size_t i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_UP;
@@ -2353,14 +2379,14 @@ png_setup_up_row_only(png_structrp png_ptr, const png_size_t row_bytes)
}
}
-static png_size_t /* PRIVATE */
-png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
- const png_size_t row_bytes, const png_size_t lmins)
+static size_t /* PRIVATE */
+png_setup_avg_row(png_structrp png_ptr, png_uint_32 bpp,
+ size_t row_bytes, size_t lmins)
{
png_bytep rp, dp, pp, lp;
png_uint_32 i;
- png_size_t sum = 0;
- int v;
+ size_t sum = 0;
+ unsigned int v;
png_ptr->try_row[0] = PNG_FILTER_VALUE_AVG;
@@ -2370,7 +2396,7 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2382,7 +2408,7 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
& 0xff);
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2391,11 +2417,11 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
break;
}
- return (sum);
+ return sum;
}
static void /* PRIVATE */
-png_setup_avg_row_only(png_structrp png_ptr, const png_uint_32 bpp,
- const png_size_t row_bytes)
+png_setup_avg_row_only(png_structrp png_ptr, png_uint_32 bpp,
+ size_t row_bytes)
{
png_bytep rp, dp, pp, lp;
png_uint_32 i;
@@ -2415,14 +2441,14 @@ png_setup_avg_row_only(png_structrp png_ptr, const png_uint_32 bpp,
}
}
-static png_size_t /* PRIVATE */
-png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
- const png_size_t row_bytes, const png_size_t lmins)
+static size_t /* PRIVATE */
+png_setup_paeth_row(png_structrp png_ptr, png_uint_32 bpp,
+ size_t row_bytes, size_t lmins)
{
png_bytep rp, dp, pp, cp, lp;
- png_size_t i;
- png_size_t sum = 0;
- int v;
+ size_t i;
+ size_t sum = 0;
+ unsigned int v;
png_ptr->try_row[0] = PNG_FILTER_VALUE_PAETH;
@@ -2432,7 +2458,7 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2465,7 +2491,7 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2474,14 +2500,14 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
break;
}
- return (sum);
+ return sum;
}
static void /* PRIVATE */
-png_setup_paeth_row_only(png_structrp png_ptr, const png_uint_32 bpp,
- const png_size_t row_bytes)
+png_setup_paeth_row_only(png_structrp png_ptr, png_uint_32 bpp,
+ size_t row_bytes)
{
png_bytep rp, dp, pp, cp, lp;
- png_size_t i;
+ size_t i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_PAETH;
@@ -2530,8 +2556,8 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
png_bytep row_buf;
png_bytep best_row;
png_uint_32 bpp;
- png_size_t mins;
- png_size_t row_bytes = row_info->rowbytes;
+ size_t mins;
+ size_t row_bytes = row_info->rowbytes;
png_debug(1, "in png_write_find_filter");
@@ -2586,16 +2612,16 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
* 'none' filter.
*/
png_bytep rp;
- png_size_t sum = 0;
- png_size_t i;
- int v;
+ size_t sum = 0;
+ size_t i;
+ unsigned int v;
{
for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
{
v = *rp;
#ifdef PNG_USE_ABS
- sum += 128 - abs(v - 128);
+ sum += 128 - abs((int)v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
@@ -2615,8 +2641,8 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
else if ((filter_to_do & PNG_FILTER_SUB) != 0)
{
- png_size_t sum;
- png_size_t lmins = mins;
+ size_t sum;
+ size_t lmins = mins;
sum = png_setup_sub_row(png_ptr, bpp, row_bytes, lmins);
@@ -2641,8 +2667,8 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
else if ((filter_to_do & PNG_FILTER_UP) != 0)
{
- png_size_t sum;
- png_size_t lmins = mins;
+ size_t sum;
+ size_t lmins = mins;
sum = png_setup_up_row(png_ptr, row_bytes, lmins);
@@ -2667,8 +2693,8 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
else if ((filter_to_do & PNG_FILTER_AVG) != 0)
{
- png_size_t sum;
- png_size_t lmins = mins;
+ size_t sum;
+ size_t lmins = mins;
sum= png_setup_avg_row(png_ptr, bpp, row_bytes, lmins);
@@ -2693,8 +2719,8 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
else if ((filter_to_do & PNG_FILTER_PAETH) != 0)
{
- png_size_t sum;
- png_size_t lmins = mins;
+ size_t sum;
+ size_t lmins = mins;
sum = png_setup_paeth_row(png_ptr, bpp, row_bytes, lmins);
@@ -2719,7 +2745,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
/* Do the actual writing of a previously filtered row. */
static void
png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
- png_size_t full_row_length/*includes filter byte*/)
+ size_t full_row_length/*includes filter byte*/)
{
png_debug(1, "in png_write_filtered_row");