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added video postprocessor delay refers to GH-370
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/** | ||
* @file vo_postprocess/delay.c | ||
* @author Martin Pulec <[email protected]> | ||
*/ | ||
/* | ||
* Copyright (c) 2024 CESNET z.s.p.o. | ||
* All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, is permitted provided that the following conditions | ||
* are met: | ||
* | ||
* 1. Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* | ||
* 2. Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in the | ||
* documentation and/or other materials provided with the distribution. | ||
* | ||
* 3. Neither the name of CESNET nor the names of its contributors may be | ||
* used to endorse or promote products derived from this software without | ||
* specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS | ||
* "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, | ||
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | ||
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | ||
* EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | ||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | ||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | ||
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
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#include <assert.h> | ||
#include <limits.h> | ||
#include <math.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
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#include "debug.h" | ||
#include "lib_common.h" | ||
#include "types.h" | ||
#include "utils/color_out.h" | ||
#include "utils/list.h" | ||
#include "utils/macros.h" | ||
#include "video_codec.h" | ||
#include "video_display.h" | ||
#include "video_frame.h" | ||
#include "vo_postprocess.h" | ||
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#define MOD_NAME "[vpp/delay] " | ||
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struct state_delay { | ||
double delay_sec; | ||
int delay_frames; | ||
struct video_desc desc; | ||
struct simple_linked_list *cached_frames; | ||
}; | ||
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static bool | ||
delay_get_property(void *state, int property, void *val, size_t *len) | ||
{ | ||
(void) state; | ||
if (property != VO_PP_PROPERTY_CODECS) { | ||
return false; | ||
} | ||
const size_t codecs_len = (VC_END - VC_FIRST) * sizeof(codec_t); | ||
assert(codecs_len <= *len); | ||
*len = codecs_len; | ||
codec_t *codecs = val; | ||
for (int i = VC_FIRST; i < VC_END; ++i) { | ||
codecs[i] = i; | ||
} | ||
return true; | ||
} | ||
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static void | ||
usage() | ||
{ | ||
color_printf(TBOLD("delay") " postprocessor settings:\n"); | ||
color_printf( | ||
TBOLD(TRED("\t-p delay:[seconds=<s>|frames=<f>]")) " | " TBOLD( | ||
"-p delay:help") "\n"); | ||
color_printf("\nSeconds can be given as a decimal number.\n"); | ||
color_printf("\n"); | ||
} | ||
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static void * | ||
delay_init(const char *config) | ||
{ | ||
if (!IS_KEY_PREFIX(config, "seconds") && | ||
!IS_KEY_PREFIX(config, "frames")) { | ||
usage(); | ||
return NULL; | ||
} | ||
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const char *val_s = strchr(config, '=') + 1; | ||
double val = strtod(val_s, NULL); | ||
if (val <= 0 || val > INT_MAX) { | ||
MSG(ERROR, "Wrong delay value: %s\n", val_s); | ||
return NULL; | ||
} | ||
if (IS_KEY_PREFIX(config, "frames") && fabs(round(val) - val) > 0.0) { | ||
MSG(ERROR, "Number of frames should be an integer, given: %s\n", | ||
val_s); | ||
return NULL; | ||
} | ||
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struct state_delay *s = calloc(1, sizeof(struct state_delay)); | ||
assert(s != NULL); | ||
if (IS_KEY_PREFIX(config, "seconds")) { | ||
s->delay_sec = val; | ||
} else { | ||
s->delay_frames = (int) val; | ||
} | ||
s->cached_frames = simple_linked_list_init(); | ||
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return s; | ||
} | ||
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static bool | ||
delay_reconfigure(void *state, struct video_desc desc) | ||
{ | ||
struct state_delay *s = (struct state_delay *) state; | ||
s->desc = desc; | ||
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struct video_frame *f = NULL; | ||
while ((f = simple_linked_list_pop(s->cached_frames)) != NULL) { | ||
vf_free(f); | ||
} | ||
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return true; | ||
} | ||
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static struct video_frame * | ||
delay_getf(void *state) | ||
{ | ||
struct state_delay *s = state; | ||
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return vf_alloc_desc_data(s->desc); | ||
} | ||
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static bool | ||
delay_postprocess(void *state, struct video_frame *in, struct video_frame *out, | ||
int req_pitch) | ||
{ | ||
struct state_delay *s = state; | ||
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simple_linked_list_append(s->cached_frames, in); | ||
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const int list_size = simple_linked_list_size(s->cached_frames); | ||
if (s->delay_frames >= 0 && list_size < s->delay_frames) { | ||
return false; | ||
} | ||
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if (list_size / s->desc.fps < s->delay_sec) { | ||
return false; | ||
} | ||
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struct video_frame *f = simple_linked_list_pop(s->cached_frames); | ||
const size_t linesize = | ||
vc_get_linesize(f->tiles[0].width, f->color_spec); | ||
for (size_t i = 0; i < s->desc.height; ++i) { | ||
memcpy(out->tiles[0].data + i * req_pitch, | ||
f->tiles[0].data + i * linesize, linesize); | ||
} | ||
vf_free(f); | ||
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return true; | ||
} | ||
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static void | ||
delay_done(void *state) | ||
{ | ||
struct state_delay *s = state; | ||
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struct video_frame *f = NULL; | ||
while ((f = simple_linked_list_pop(s->cached_frames)) != NULL) { | ||
vf_free(f); | ||
} | ||
simple_linked_list_destroy(s->cached_frames); | ||
free(s); | ||
} | ||
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static void | ||
delay_get_out_desc(void *state, struct video_desc *out, int *in_display_mode, | ||
int *out_frames) | ||
{ | ||
struct state_delay *s = state; | ||
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*out = s->desc; | ||
*in_display_mode = DISPLAY_PROPERTY_VIDEO_MERGED; | ||
*out_frames = 1; | ||
} | ||
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static const struct vo_postprocess_info vo_pp_delay_info = { | ||
delay_init, delay_reconfigure, delay_getf, delay_get_out_desc, | ||
delay_get_property, delay_postprocess, delay_done, | ||
}; | ||
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REGISTER_MODULE(delay, &vo_pp_delay_info, LIBRARY_CLASS_VIDEO_POSTPROCESS, | ||
VO_PP_ABI_VERSION); |