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driver.c
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driver.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2014 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "driver.h"
#include "general.h"
#include "file.h"
#include "libretro.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "compat/posix_string.h"
#include "audio/utils.h"
#include "audio/resampler.h"
#include "gfx/thread_wrapper.h"
#include "audio/thread_wrapper.h"
#include "audio/dsp_filter.h"
#include "gfx/gfx_common.h"
#ifdef HAVE_X11
#include "gfx/context/x11_common.h"
#endif
#ifdef HAVE_MENU
#include "frontend/menu/menu_common.h"
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
static const audio_driver_t *audio_drivers[] = {
#ifdef HAVE_ALSA
&audio_alsa,
#ifndef __QNX__
&audio_alsathread,
#endif
#endif
#if defined(HAVE_OSS) || defined(HAVE_OSS_BSD)
&audio_oss,
#endif
#ifdef HAVE_RSOUND
&audio_rsound,
#endif
#ifdef HAVE_COREAUDIO
&audio_coreaudio,
#endif
#ifdef HAVE_AL
&audio_openal,
#endif
#ifdef HAVE_SL
&audio_opensl,
#endif
#ifdef HAVE_ROAR
&audio_roar,
#endif
#ifdef HAVE_JACK
&audio_jack,
#endif
#ifdef HAVE_SDL
&audio_sdl,
#endif
#ifdef HAVE_XAUDIO
&audio_xa,
#endif
#ifdef HAVE_DSOUND
&audio_dsound,
#endif
#ifdef HAVE_PULSE
&audio_pulse,
#endif
#ifdef __CELLOS_LV2__
&audio_ps3,
#endif
#ifdef XENON
&audio_xenon360,
#endif
#ifdef GEKKO
&audio_gx,
#endif
#ifdef EMSCRIPTEN
&audio_rwebaudio,
#endif
#ifdef PSP
&audio_psp1,
#endif
#ifdef HAVE_NULLAUDIO
&audio_null,
#endif
NULL,
};
static const video_driver_t *video_drivers[] = {
#ifdef HAVE_OPENGL
&video_gl,
#endif
#ifdef XENON
&video_xenon360,
#endif
#if defined(_XBOX) && (defined(HAVE_D3D8) || defined(HAVE_D3D9)) || defined(HAVE_WIN32_D3D9)
&video_d3d,
#endif
#ifdef SN_TARGET_PSP2
&video_vita,
#endif
#ifdef PSP
&video_psp1,
#endif
#ifdef HAVE_SDL
&video_sdl,
#endif
#ifdef HAVE_XVIDEO
&video_xvideo,
#endif
#ifdef GEKKO
&video_gx,
#endif
#ifdef HAVE_VG
&video_vg,
#endif
#ifdef HAVE_NULLVIDEO
&video_null,
#endif
#ifdef HAVE_LIMA
&video_lima,
#endif
#ifdef HAVE_OMAP
&video_omap,
#endif
NULL,
};
static const input_driver_t *input_drivers[] = {
#ifdef __CELLOS_LV2__
&input_ps3,
#endif
#if defined(SN_TARGET_PSP2) || defined(PSP)
&input_psp,
#endif
#ifdef HAVE_SDL
&input_sdl,
#endif
#ifdef HAVE_DINPUT
&input_dinput,
#endif
#ifdef HAVE_X11
&input_x,
#endif
#ifdef XENON
&input_xenon360,
#endif
#if defined(HAVE_XINPUT2) || defined(HAVE_XINPUT_XBOX1)
&input_xinput,
#endif
#ifdef GEKKO
&input_gx,
#endif
#ifdef ANDROID
&input_android,
#endif
#ifdef HAVE_UDEV
&input_udev,
#endif
#if defined(__linux__) && !defined(ANDROID)
&input_linuxraw,
#endif
#if defined(IOS) || defined(OSX) //< Don't use __APPLE__ as it breaks basic SDL builds
&input_apple,
#endif
#ifdef __QNX__
&input_qnx,
#endif
#ifdef EMSCRIPTEN
&input_rwebinput,
#endif
#ifdef HAVE_NULLINPUT
&input_null,
#endif
NULL,
};
#ifdef HAVE_OSK
#include "driver-contexts/osk_driver.c"
#endif
#ifdef HAVE_CAMERA
#include "driver-contexts/camera_driver.c"
#endif
#ifdef HAVE_LOCATION
#include "driver-contexts/location_driver.c"
#endif
#ifdef HAVE_MENU
#include "driver-contexts/menu_driver.c"
#endif
static int find_audio_driver_index(const char *driver)
{
unsigned i;
for (i = 0; audio_drivers[i]; i++)
if (strcasecmp(driver, audio_drivers[i]->ident) == 0)
return i;
return -1;
}
static int find_video_driver_index(const char *driver)
{
unsigned i;
for (i = 0; video_drivers[i]; i++)
if (strcasecmp(driver, video_drivers[i]->ident) == 0)
return i;
return -1;
}
static int find_input_driver_index(const char *driver)
{
unsigned i;
for (i = 0; input_drivers[i]; i++)
if (strcasecmp(driver, input_drivers[i]->ident) == 0)
return i;
return -1;
}
static void find_audio_driver(void)
{
int i = find_audio_driver_index(g_settings.audio.driver);
if (i >= 0)
driver.audio = audio_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any audio driver named \"%s\"\n", g_settings.audio.driver);
RARCH_LOG_OUTPUT("Available audio drivers are:\n");
for (d = 0; audio_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", audio_drivers[d]->ident);
rarch_fail(1, "find_audio_driver()");
}
}
void find_prev_audio_driver(void)
{
int i = find_audio_driver_index(g_settings.audio.driver);
if (i > 0)
strlcpy(g_settings.audio.driver, audio_drivers[i - 1]->ident, sizeof(g_settings.audio.driver));
else
RARCH_WARN("Couldn't find any previous audio driver (current one: \"%s\").\n", g_settings.audio.driver);
}
void find_next_audio_driver(void)
{
int i = find_audio_driver_index(g_settings.audio.driver);
if (i >= 0 && audio_drivers[i + 1])
strlcpy(g_settings.audio.driver, audio_drivers[i + 1]->ident, sizeof(g_settings.audio.driver));
else
RARCH_WARN("Couldn't find any next audio driver (current one: \"%s\").\n", g_settings.audio.driver);
}
static void find_video_driver(void)
{
#if defined(HAVE_OPENGL) && defined(HAVE_FBO)
if (g_extern.system.hw_render_callback.context_type)
{
RARCH_LOG("Using HW render, OpenGL driver forced.\n");
driver.video = &video_gl;
return;
}
#endif
int i = find_video_driver_index(g_settings.video.driver);
if (i >= 0)
driver.video = video_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any video driver named \"%s\"\n", g_settings.video.driver);
RARCH_LOG_OUTPUT("Available video drivers are:\n");
for (d = 0; video_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", video_drivers[d]->ident);
rarch_fail(1, "find_video_driver()");
}
}
void find_prev_video_driver(void)
{
// No need to enforce GL if HW render. This is done at driver initialize anyways.
int i = find_video_driver_index(g_settings.video.driver);
if (i > 0)
strlcpy(g_settings.video.driver, video_drivers[i - 1]->ident, sizeof(g_settings.video.driver));
else
RARCH_WARN("Couldn't find any previous video driver (current one: \"%s\").\n", g_settings.video.driver);
}
void find_next_video_driver(void)
{
// No need to enforce GL if HW render. This is done at driver initialize anyways.
int i = find_video_driver_index(g_settings.video.driver);
if (i >= 0 && video_drivers[i + 1])
strlcpy(g_settings.video.driver, video_drivers[i + 1]->ident, sizeof(g_settings.video.driver));
else
RARCH_WARN("Couldn't find any next video driver (current one: \"%s\").\n", g_settings.video.driver);
}
static void find_input_driver(void)
{
int i = find_input_driver_index(g_settings.input.driver);
if (i >= 0)
driver.input = input_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any input driver named \"%s\"\n", g_settings.input.driver);
RARCH_LOG_OUTPUT("Available input drivers are:\n");
for (d = 0; input_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", input_drivers[d]->ident);
rarch_fail(1, "find_input_driver()");
}
}
void find_prev_input_driver(void)
{
int i = find_input_driver_index(g_settings.input.driver);
if (i > 0)
strlcpy(g_settings.input.driver, input_drivers[i - 1]->ident, sizeof(g_settings.input.driver));
else
RARCH_ERR("Couldn't find any previous input driver (current one: \"%s\").\n", g_settings.input.driver);
}
void find_next_input_driver(void)
{
int i = find_input_driver_index(g_settings.input.driver);
if (i >= 0 && input_drivers[i + 1])
strlcpy(g_settings.input.driver, input_drivers[i + 1]->ident, sizeof(g_settings.input.driver));
else
RARCH_ERR("Couldn't find any next input driver (current one: \"%s\").\n", g_settings.input.driver);
}
void init_drivers_pre(void)
{
find_audio_driver();
find_video_driver();
find_input_driver();
#ifdef HAVE_CAMERA
find_camera_driver();
#endif
#ifdef HAVE_LOCATION
find_location_driver();
#endif
#ifdef HAVE_OSK
find_osk_driver();
#endif
#ifdef HAVE_MENU
find_menu_driver();
#endif
}
static void adjust_system_rates(void)
{
g_extern.system.force_nonblock = false;
const struct retro_system_timing *info = &g_extern.system.av_info.timing;
if (info->fps <= 0.0 || info->sample_rate <= 0.0)
return;
float timing_skew = fabs(1.0f - info->fps / g_settings.video.refresh_rate);
if (timing_skew > 0.05f) // We don't want to adjust pitch too much. If we have extreme cases, just don't readjust at all.
{
RARCH_LOG("Timings deviate too much. Will not adjust. (Display = %.2f Hz, Game = %.2f Hz)\n",
g_settings.video.refresh_rate,
(float)info->fps);
// We won't be able to do VSync reliably as game FPS > monitor FPS.
if (info->fps > g_settings.video.refresh_rate)
{
g_extern.system.force_nonblock = true;
RARCH_LOG("Game FPS > Monitor FPS. Cannot rely on VSync.\n");
}
g_settings.audio.in_rate = info->sample_rate;
}
else
g_settings.audio.in_rate = info->sample_rate *
(g_settings.video.refresh_rate / info->fps);
RARCH_LOG("Set audio input rate to: %.2f Hz.\n", g_settings.audio.in_rate);
if (driver.video_data)
{
if (g_extern.system.force_nonblock)
video_set_nonblock_state_func(true);
else
driver_set_nonblock_state(driver.nonblock_state);
}
}
void driver_set_monitor_refresh_rate(float hz)
{
char msg[256];
snprintf(msg, sizeof(msg), "Setting refresh rate to: %.3f Hz.", hz);
msg_queue_push(g_extern.msg_queue, msg, 1, 180);
RARCH_LOG("%s\n", msg);
g_settings.video.refresh_rate = hz;
adjust_system_rates();
g_extern.audio_data.orig_src_ratio =
g_extern.audio_data.src_ratio =
(double)g_settings.audio.out_rate / g_settings.audio.in_rate;
}
void driver_set_nonblock_state(bool nonblock)
{
// Only apply non-block-state for video if we're using vsync.
if (g_extern.video_active && driver.video_data)
{
bool video_nb = nonblock;
if (!g_settings.video.vsync || g_extern.system.force_nonblock)
video_nb = true;
video_set_nonblock_state_func(video_nb);
}
if (g_extern.audio_active && driver.audio_data)
audio_set_nonblock_state_func(g_settings.audio.sync ? nonblock : true);
g_extern.audio_data.chunk_size = nonblock ?
g_extern.audio_data.nonblock_chunk_size : g_extern.audio_data.block_chunk_size;
}
bool driver_set_rumble_state(unsigned port, enum retro_rumble_effect effect, uint16_t strength)
{
if (driver.input && driver.input_data && driver.input->set_rumble)
return driver.input->set_rumble(driver.input_data, port, effect, strength);
else
return false;
}
bool driver_set_sensor_state(unsigned port, enum retro_sensor_action action, unsigned rate)
{
if (driver.input && driver.input_data && driver.input->set_sensor_state)
return driver.input->set_sensor_state(driver.input_data, port, action, rate);
else
return false;
}
float driver_sensor_get_input(unsigned port, unsigned id)
{
if (driver.input && driver.input_data && driver.input->get_sensor_input)
return driver.input->get_sensor_input(driver.input_data, port, id);
else
return 0.0f;
}
uintptr_t driver_get_current_framebuffer(void)
{
#ifdef HAVE_FBO
if (driver.video_poke && driver.video_poke->get_current_framebuffer)
return driver.video_poke->get_current_framebuffer(driver.video_data);
else
#endif
return 0;
}
retro_proc_address_t driver_get_proc_address(const char *sym)
{
#ifdef HAVE_FBO
if (driver.video_poke && driver.video_poke->get_proc_address)
return driver.video_poke->get_proc_address(driver.video_data, sym);
else
#endif
return NULL;
}
bool driver_update_system_av_info(const struct retro_system_av_info *info)
{
g_extern.system.av_info = *info;
rarch_reinit_drivers();
// Cannot continue recording with different parameters.
// Take the easiest route out and just restart the recording.
#ifdef HAVE_RECORD
if (g_extern.rec)
{
static const char *msg = "Restarting FFmpeg recording due to driver reinit.";
msg_queue_push(g_extern.msg_queue, msg, 2, 180);
RARCH_WARN("%s\n", msg);
rarch_deinit_recording();
rarch_init_recording();
}
#endif
return true;
}
#ifdef HAVE_MENU
static void init_menu(void)
{
if (driver.menu)
return;
find_menu_driver();
if (!(driver.menu = (menu_handle_t*)menu_init(driver.menu_ctx)))
{
RARCH_ERR("Cannot initialize menu.\n");
rarch_fail(1, "init_menu()");
}
}
#endif
void init_drivers(void)
{
driver.video_data_own = false;
driver.audio_data_own = false;
driver.input_data_own = false;
#ifdef HAVE_CAMERA
driver.camera_data_own = false;
#endif
#ifdef HAVE_LOCATION
driver.location_data_own = false;
#endif
#ifdef HAVE_OSK
driver.osk_data_own = false;
#endif
#ifdef HAVE_MENU
// By default, we want the menu to persist through driver reinits.
driver.menu_data_own = true;
#endif
adjust_system_rates();
g_extern.frame_count = 0;
init_video_input();
if (!driver.video_cache_context_ack && g_extern.system.hw_render_callback.context_reset)
g_extern.system.hw_render_callback.context_reset();
driver.video_cache_context_ack = false;
init_audio();
#ifdef HAVE_CAMERA
// Only initialize camera driver if we're ever going to use it.
if (g_extern.camera_active)
init_camera();
#endif
#ifdef HAVE_LOCATION
// Only initialize location driver if we're ever going to use it.
if (g_extern.location_active)
init_location();
#endif
#ifdef HAVE_OSK
init_osk();
#endif
#ifdef HAVE_MENU
init_menu();
if (driver.menu && driver.menu_ctx && driver.menu_ctx->context_reset)
driver.menu_ctx->context_reset(driver.menu);
#endif
// Keep non-throttled state as good as possible.
if (driver.nonblock_state)
driver_set_nonblock_state(driver.nonblock_state);
g_extern.system.frame_time_last = 0;
}
void rarch_deinit_filter(void)
{
rarch_softfilter_free(g_extern.filter.filter);
free(g_extern.filter.buffer);
memset(&g_extern.filter, 0, sizeof(g_extern.filter));
}
static void deinit_pixel_converter(void)
{
scaler_ctx_gen_reset(&driver.scaler);
memset(&driver.scaler, 0, sizeof(driver.scaler));
free(driver.scaler_out);
driver.scaler_out = NULL;
}
static void deinit_shader_dir(void)
{
// It handles NULL, no worries :D
dir_list_free(g_extern.shader_dir.list);
g_extern.shader_dir.list = NULL;
g_extern.shader_dir.ptr = 0;
}
static void compute_monitor_fps_statistics(void)
{
if (g_settings.video.threaded)
{
RARCH_LOG("Monitor FPS estimation is disabled for threaded video.\n");
return;
}
if (g_extern.measure_data.frame_time_samples_count < 2 * MEASURE_FRAME_TIME_SAMPLES_COUNT)
{
RARCH_LOG("Does not have enough samples for monitor refresh rate estimation. Requires to run for at least %u frames.\n",
2 * MEASURE_FRAME_TIME_SAMPLES_COUNT);
return;
}
double avg_fps = 0.0;
double stddev = 0.0;
unsigned samples = 0;
if (driver_monitor_fps_statistics(&avg_fps, &stddev, &samples))
{
RARCH_LOG("Average monitor Hz: %.6f Hz. (%.3f %% frame time deviation, based on %u last samples).\n",
avg_fps, 100.0 * stddev, samples);
}
}
void uninit_drivers(void)
{
uninit_audio();
if (g_extern.system.hw_render_callback.context_destroy && !driver.video_cache_context)
g_extern.system.hw_render_callback.context_destroy();
#ifdef HAVE_MENU
if (driver.menu && driver.menu_ctx && driver.menu_ctx->context_destroy)
driver.menu_ctx->context_destroy(driver.menu);
if (!driver.menu_data_own)
{
menu_free(driver.menu);
driver.menu = NULL;
}
#endif
uninit_video_input();
if (!driver.video_data_own)
driver.video_data = NULL;
#ifdef HAVE_CAMERA
if (!driver.camera_data_own)
{
uninit_camera();
driver.camera_data = NULL;
}
#endif
#ifdef HAVE_LOCATION
if (!driver.location_data_own)
{
uninit_location();
driver.location_data = NULL;
}
#endif
#ifdef HAVE_OSK
if (!driver.osk_data_own)
{
uninit_osk();
driver.osk_data = NULL;
}
#endif
if (!driver.input_data_own)
driver.input_data = NULL;
if (!driver.audio_data_own)
driver.audio_data = NULL;
}
void rarch_init_dsp_filter(void)
{
rarch_deinit_dsp_filter();
if (!*g_settings.audio.dsp_plugin)
return;
g_extern.audio_data.dsp = rarch_dsp_filter_new(g_settings.audio.dsp_plugin, g_settings.audio.in_rate);
if (!g_extern.audio_data.dsp)
RARCH_ERR("[DSP]: Failed to initialize DSP filter \"%s\".\n", g_settings.audio.dsp_plugin);
}
void rarch_deinit_dsp_filter(void)
{
if (g_extern.audio_data.dsp)
rarch_dsp_filter_free(g_extern.audio_data.dsp);
g_extern.audio_data.dsp = NULL;
}
void init_audio(void)
{
audio_convert_init_simd();
// Resource leaks will follow if audio is initialized twice.
if (driver.audio_data)
return;
// Accomodate rewind since at some point we might have two full buffers.
size_t max_bufsamples = AUDIO_CHUNK_SIZE_NONBLOCKING * 2;
size_t outsamples_max = max_bufsamples * AUDIO_MAX_RATIO * g_settings.slowmotion_ratio;
// Used for recording even if audio isn't enabled.
rarch_assert(g_extern.audio_data.conv_outsamples = (int16_t*)malloc(outsamples_max * sizeof(int16_t)));
g_extern.audio_data.block_chunk_size = AUDIO_CHUNK_SIZE_BLOCKING;
g_extern.audio_data.nonblock_chunk_size = AUDIO_CHUNK_SIZE_NONBLOCKING;
g_extern.audio_data.chunk_size = g_extern.audio_data.block_chunk_size;
// Needs to be able to hold full content of a full max_bufsamples in addition to its own.
rarch_assert(g_extern.audio_data.rewind_buf = (int16_t*)malloc(max_bufsamples * sizeof(int16_t)));
g_extern.audio_data.rewind_size = max_bufsamples;
if (!g_settings.audio.enable)
{
g_extern.audio_active = false;
return;
}
#ifdef HAVE_THREADS
find_audio_driver();
if (g_extern.system.audio_callback.callback)
{
RARCH_LOG("Starting threaded audio driver ...\n");
if (!rarch_threaded_audio_init(&driver.audio, &driver.audio_data,
*g_settings.audio.device ? g_settings.audio.device : NULL,
g_settings.audio.out_rate, g_settings.audio.latency,
driver.audio))
{
RARCH_ERR("Cannot open threaded audio driver ... Exiting ...\n");
rarch_fail(1, "init_audio()");
}
}
else
#endif
{
driver.audio_data = audio_init_func(*g_settings.audio.device ? g_settings.audio.device : NULL,
g_settings.audio.out_rate, g_settings.audio.latency);
}
if (!driver.audio_data)
{
RARCH_ERR("Failed to initialize audio driver. Will continue without audio.\n");
g_extern.audio_active = false;
}
g_extern.audio_data.use_float = false;
if (g_extern.audio_active && driver.audio->use_float && audio_use_float_func())
g_extern.audio_data.use_float = true;
if (!g_settings.audio.sync && g_extern.audio_active)
{
audio_set_nonblock_state_func(true);
g_extern.audio_data.chunk_size = g_extern.audio_data.nonblock_chunk_size;
}
g_extern.audio_data.orig_src_ratio =
g_extern.audio_data.src_ratio =
(double)g_settings.audio.out_rate / g_settings.audio.in_rate;
if (!rarch_resampler_realloc(&g_extern.audio_data.resampler_data, &g_extern.audio_data.resampler,
g_settings.audio.resampler, g_extern.audio_data.orig_src_ratio))
{
RARCH_ERR("Failed to initialize resampler \"%s\".\n", g_settings.audio.resampler);
g_extern.audio_active = false;
}
rarch_assert(g_extern.audio_data.data = (float*)malloc(max_bufsamples * sizeof(float)));
g_extern.audio_data.data_ptr = 0;
rarch_assert(g_settings.audio.out_rate < g_settings.audio.in_rate * AUDIO_MAX_RATIO);
rarch_assert(g_extern.audio_data.outsamples = (float*)malloc(outsamples_max * sizeof(float)));
g_extern.audio_data.rate_control = false;
if (!g_extern.system.audio_callback.callback && g_extern.audio_active && g_settings.audio.rate_control)
{
if (driver.audio->buffer_size && driver.audio->write_avail)
{
g_extern.audio_data.driver_buffer_size = audio_buffer_size_func();
g_extern.audio_data.rate_control = true;
}
else
RARCH_WARN("Audio rate control was desired, but driver does not support needed features.\n");
}
rarch_init_dsp_filter();
g_extern.measure_data.buffer_free_samples_count = 0;
if (g_extern.audio_active && !g_extern.audio_data.mute && g_extern.system.audio_callback.callback) // Threaded driver is initially stopped.
audio_start_func();
}
static void compute_audio_buffer_statistics(void)
{
unsigned i, samples;
samples = min(g_extern.measure_data.buffer_free_samples_count, AUDIO_BUFFER_FREE_SAMPLES_COUNT);
if (samples < 3)
return;
uint64_t accum = 0;
for (i = 1; i < samples; i++)
accum += g_extern.measure_data.buffer_free_samples[i];
int avg = accum / (samples - 1);
uint64_t accum_var = 0;
for (i = 1; i < samples; i++)
{
int diff = avg - g_extern.measure_data.buffer_free_samples[i];
accum_var += diff * diff;
}
unsigned stddev = (unsigned)sqrt((double)accum_var / (samples - 2));
float avg_filled = 1.0f - (float)avg / g_extern.audio_data.driver_buffer_size;
float deviation = (float)stddev / g_extern.audio_data.driver_buffer_size;
unsigned low_water_size = g_extern.audio_data.driver_buffer_size * 3 / 4;
unsigned high_water_size = g_extern.audio_data.driver_buffer_size / 4;
unsigned low_water_count = 0;
unsigned high_water_count = 0;
for (i = 1; i < samples; i++)
{
if (g_extern.measure_data.buffer_free_samples[i] >= low_water_size)
low_water_count++;
else if (g_extern.measure_data.buffer_free_samples[i] <= high_water_size)
high_water_count++;
}
RARCH_LOG("Average audio buffer saturation: %.2f %%, standard deviation (percentage points): %.2f %%.\n",
avg_filled * 100.0, deviation * 100.0);
RARCH_LOG("Amount of time spent close to underrun: %.2f %%. Close to blocking: %.2f %%.\n",
(100.0 * low_water_count) / (samples - 1),
(100.0 * high_water_count) / (samples - 1));
}
bool driver_monitor_fps_statistics(double *refresh_rate, double *deviation, unsigned *sample_points)
{
unsigned i;
if (g_settings.video.threaded)
return false;
unsigned samples = min(MEASURE_FRAME_TIME_SAMPLES_COUNT, g_extern.measure_data.frame_time_samples_count);
if (samples < 2)
return false;
// Measure statistics on frame time (microsecs), *not* FPS.
retro_time_t accum = 0;
for (i = 0; i < samples; i++)
accum += g_extern.measure_data.frame_time_samples[i];
#if 0
for (i = 0; i < samples; i++)
RARCH_LOG("Interval #%u: %d usec / frame.\n",
i, (int)g_extern.measure_data.frame_time_samples[i]);
#endif
retro_time_t avg = accum / samples;
retro_time_t accum_var = 0;
// Drop first measurement. It is likely to be bad.
for (i = 0; i < samples; i++)
{
retro_time_t diff = g_extern.measure_data.frame_time_samples[i] - avg;
accum_var += diff * diff;
}
*deviation = sqrt((double)accum_var / (samples - 1)) / avg;
*refresh_rate = 1000000.0 / avg;
*sample_points = samples;
return true;
}
void uninit_audio(void)
{
if (driver.audio_data && driver.audio)
driver.audio->free(driver.audio_data);
free(g_extern.audio_data.conv_outsamples);
g_extern.audio_data.conv_outsamples = NULL;
g_extern.audio_data.data_ptr = 0;
free(g_extern.audio_data.rewind_buf);
g_extern.audio_data.rewind_buf = NULL;
if (!g_settings.audio.enable)
{
g_extern.audio_active = false;
return;
}
rarch_resampler_freep(&g_extern.audio_data.resampler, &g_extern.audio_data.resampler_data);
free(g_extern.audio_data.data);
g_extern.audio_data.data = NULL;
free(g_extern.audio_data.outsamples);
g_extern.audio_data.outsamples = NULL;
rarch_deinit_dsp_filter();
compute_audio_buffer_statistics();
}
void rarch_init_filter(enum retro_pixel_format colfmt)
{
rarch_deinit_filter();
#ifndef HAVE_FILTERS_BUILTIN
if (!*g_settings.video.filter_path)
return;
#endif
// Deprecated format. Gets pre-converted.
if (colfmt == RETRO_PIXEL_FORMAT_0RGB1555)
colfmt = RETRO_PIXEL_FORMAT_RGB565;
if (g_extern.system.hw_render_callback.context_type)
{
RARCH_WARN("Cannot use CPU filters when hardware rendering is used.\n");
return;
}
struct retro_game_geometry *geom = &g_extern.system.av_info.geometry;
unsigned width = geom->max_width;
unsigned height = geom->max_height;
unsigned pow2_x = 0;
unsigned pow2_y = 0;
unsigned maxsize = 0;
#ifndef HAVE_FILTERS_BUILTIN
RARCH_LOG("Loading softfilter from \"%s\"\n", g_settings.video.filter_path);
#endif
g_extern.filter.filter = rarch_softfilter_new(g_settings.video.filter_path,
RARCH_SOFTFILTER_THREADS_AUTO, colfmt, width, height);
if (!g_extern.filter.filter)
{
RARCH_ERR("Failed to load filter.\n");
return;
}
rarch_softfilter_get_max_output_size(g_extern.filter.filter, &width, &height);
pow2_x = next_pow2(width);
pow2_y = next_pow2(height);
maxsize = max(pow2_x, pow2_y);
g_extern.filter.scale = maxsize / RARCH_SCALE_BASE;
g_extern.filter.out_rgb32 = rarch_softfilter_get_output_format(g_extern.filter.filter) == RETRO_PIXEL_FORMAT_XRGB8888;
g_extern.filter.out_bpp = g_extern.filter.out_rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
// TODO: Aligned output.
g_extern.filter.buffer = malloc(width * height * g_extern.filter.out_bpp);
if (!g_extern.filter.buffer)
goto error;
return;
error:
RARCH_ERR("Softfilter initialization failed.\n");
rarch_deinit_filter();
}
static void init_shader_dir(void)
{
unsigned i;
if (!*g_settings.video.shader_dir)
return;
g_extern.shader_dir.list = dir_list_new(g_settings.video.shader_dir, "cg|cgp|glsl|glslp", false);
if (!g_extern.shader_dir.list || g_extern.shader_dir.list->size == 0)
{
deinit_shader_dir();
return;
}
g_extern.shader_dir.ptr = 0;
dir_list_sort(g_extern.shader_dir.list, false);
for (i = 0; i < g_extern.shader_dir.list->size; i++)
RARCH_LOG("Found shader \"%s\"\n", g_extern.shader_dir.list->elems[i].data);
}