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RetroArch/driver.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
*
* 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 <stdio.h>
#include <string.h>
#include <math.h>
#include "compat/posix_string.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
static const audio_driver_t *audio_drivers[] = {
#ifdef HAVE_ALSA
&audio_alsa,
#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_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 HAVE_DYLIB
&audio_ext,
#endif
#ifdef __CELLOS_LV2__
&audio_ps3,
#endif
#ifdef XENON
&audio_xenon360,
#endif
#ifdef _XBOX
&audio_xdk360,
#endif
#ifdef GEKKO
&audio_wii,
#endif
&audio_null,
};
static const video_driver_t *video_drivers[] = {
#ifdef HAVE_OPENGL
&video_gl,
#endif
#ifdef XENON
&video_xenon360,
#endif
#ifdef _XBOX
&video_xdk360,
#endif
#ifdef HAVE_SDL
&video_sdl,
#endif
#ifdef HAVE_XVIDEO
&video_xvideo,
#endif
#ifdef HAVE_DYLIB
&video_ext,
#endif
#ifdef GEKKO
&video_wii,
#endif
#ifdef HAVE_RPI
&video_rpi,
#endif
&video_null,
};
static const input_driver_t *input_drivers[] = {
#ifdef __CELLOS_LV2__
&input_ps3,
#endif
#ifdef HAVE_SDL
&input_sdl,
#endif
#ifdef HAVE_XVIDEO
&input_x,
#endif
#ifdef XENON
&input_xenon360,
#endif
#ifdef _XBOX
&input_xdk360,
#endif
#ifdef GEKKO
&input_wii,
#endif
#ifdef IS_LINUX
&input_linuxraw,
#endif
&input_null,
};
static void find_audio_driver(void)
{
for (unsigned i = 0; i < sizeof(audio_drivers) / sizeof(audio_driver_t*); i++)
{
if (strcasecmp(g_settings.audio.driver, audio_drivers[i]->ident) == 0)
{
driver.audio = audio_drivers[i];
return;
}
}
RARCH_ERR("Couldn't find any audio driver named \"%s\"\n", g_settings.audio.driver);
fprintf(stderr, "Available audio drivers are:\n");
for (size_t i = 0; i < sizeof(audio_drivers) / sizeof(audio_driver_t*); i++)
fprintf(stderr, "\t%s\n", audio_drivers[i]->ident);
rarch_fail(1, "find_audio_driver()");
}
static void find_video_driver(void)
{
for (unsigned i = 0; i < sizeof(video_drivers) / sizeof(video_driver_t*); i++)
{
if (strcasecmp(g_settings.video.driver, video_drivers[i]->ident) == 0)
{
driver.video = video_drivers[i];
return;
}
}
RARCH_ERR("Couldn't find any video driver named \"%s\"\n", g_settings.video.driver);
fprintf(stderr, "Available video drivers are:\n");
for (size_t i = 0; i < sizeof(video_drivers) / sizeof(video_driver_t*); i++)
fprintf(stderr, "\t%s\n", video_drivers[i]->ident);
rarch_fail(1, "find_video_driver()");
}
static void find_input_driver(void)
{
for (unsigned i = 0; i < sizeof(input_drivers) / sizeof(input_driver_t*); i++)
{
if (strcasecmp(g_settings.input.driver, input_drivers[i]->ident) == 0)
{
driver.input = input_drivers[i];
return;
}
}
RARCH_ERR("Couldn't find any input driver named \"%s\"\n", g_settings.input.driver);
fprintf(stderr, "Available input drivers are:\n");
for (size_t i = 0; i < sizeof(input_drivers) / sizeof(input_driver_t*); i++)
fprintf(stderr, "\t%s\n", input_drivers[i]->ident);
rarch_fail(1, "find_input_driver()");
}
void init_drivers_pre(void)
{
find_audio_driver();
find_video_driver();
find_input_driver();
}
void init_drivers(void)
{
init_video_input();
init_audio();
}
void uninit_drivers(void)
{
uninit_audio();
uninit_video_input();
}
#ifdef HAVE_DYLIB
static void init_dsp_plugin(void)
{
if (!(*g_settings.audio.dsp_plugin))
return;
rarch_dsp_info_t info = {0};
g_extern.audio_data.dsp_lib = dylib_load(g_settings.audio.dsp_plugin);
if (!g_extern.audio_data.dsp_lib)
{
RARCH_ERR("Failed to open DSP plugin: \"%s\" ...\n", g_settings.audio.dsp_plugin);
return;
}
const rarch_dsp_plugin_t* (RARCH_API_CALLTYPE *plugin_init)(void) =
(const rarch_dsp_plugin_t *(RARCH_API_CALLTYPE*)(void))dylib_proc(g_extern.audio_data.dsp_lib, "rarch_dsp_plugin_init");
if (!plugin_init)
plugin_init = (const rarch_dsp_plugin_t *(RARCH_API_CALLTYPE*)(void))dylib_proc(g_extern.audio_data.dsp_lib, "ssnes_dsp_plugin_init"); // Compat. Will be dropped on ABI break.
if (!plugin_init)
{
RARCH_ERR("Failed to find symbol \"rarch_dsp_plugin_init\" in DSP plugin.\n");
goto error;
}
g_extern.audio_data.dsp_plugin = plugin_init();
if (!g_extern.audio_data.dsp_plugin)
{
RARCH_ERR("Failed to get a valid DSP plugin.\n");
goto error;
}
if (g_extern.audio_data.dsp_plugin->api_version != RARCH_DSP_API_VERSION)
{
RARCH_ERR("DSP plugin API mismatch. SSNES: %d, Plugin: %d\n", RARCH_DSP_API_VERSION, g_extern.audio_data.dsp_plugin->api_version);
goto error;
}
RARCH_LOG("Loaded DSP plugin: \"%s\"\n", g_extern.audio_data.dsp_plugin->ident ? g_extern.audio_data.dsp_plugin->ident : "Unknown");
info.input_rate = g_settings.audio.in_rate;
info.output_rate = g_settings.audio.out_rate;
g_extern.audio_data.dsp_handle = g_extern.audio_data.dsp_plugin->init(&info);
if (!g_extern.audio_data.dsp_handle)
{
RARCH_ERR("Failed to init DSP plugin.\n");
goto error;
}
return;
error:
if (g_extern.audio_data.dsp_lib)
dylib_close(g_extern.audio_data.dsp_lib);
g_extern.audio_data.dsp_plugin = NULL;
g_extern.audio_data.dsp_lib = NULL;
}
static void deinit_dsp_plugin(void)
{
if (g_extern.audio_data.dsp_lib && g_extern.audio_data.dsp_plugin)
{
g_extern.audio_data.dsp_plugin->free(g_extern.audio_data.dsp_handle);
dylib_close(g_extern.audio_data.dsp_lib);
}
}
#endif
static void adjust_audio_input_rate(void)
{
const struct retro_system_timing *info = &g_extern.system.av_info.timing;
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);
g_settings.video.refresh_rate = info->fps;
}
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);
}
void init_audio(void)
{
// 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;
}
adjust_audio_input_rate();
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;
}
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.source = resampler_new();
if (!g_extern.audio_data.source)
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.orig_src_ratio =
g_extern.audio_data.src_ratio =
(double)g_settings.audio.out_rate / g_settings.audio.in_rate;
if (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");
}
#ifdef HAVE_DYLIB
init_dsp_plugin();
#endif
}
void uninit_audio(void)
{
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;
}
if (driver.audio_data && driver.audio)
driver.audio->free(driver.audio_data);
if (g_extern.audio_data.source)
resampler_free(g_extern.audio_data.source);
free(g_extern.audio_data.data);
g_extern.audio_data.data = NULL;
free(g_extern.audio_data.outsamples);
g_extern.audio_data.outsamples = NULL;
#ifdef HAVE_DYLIB
deinit_dsp_plugin();
#endif
}
#ifdef HAVE_DYLIB
static void init_filter(void)
{
if (g_extern.filter.active)
return;
if (*g_settings.video.filter_path == '\0')
return;
if (g_extern.system.rgb32)
{
RARCH_WARN("libretro implementation uses XRGB8888 format. CPU filters only support 0RGB1555.\n");
return;
}
RARCH_LOG("Loading bSNES filter from \"%s\"\n", g_settings.video.filter_path);
g_extern.filter.lib = dylib_load(g_settings.video.filter_path);
if (!g_extern.filter.lib)
{
RARCH_ERR("Failed to load filter \"%s\"\n", g_settings.video.filter_path);
return;
}
g_extern.filter.psize =
(void (*)(unsigned*, unsigned*))dylib_proc(g_extern.filter.lib, "filter_size");
g_extern.filter.prender =
(void (*)(uint32_t*, uint32_t*,
unsigned, const uint16_t*,
unsigned, unsigned, unsigned))dylib_proc(g_extern.filter.lib, "filter_render");
if (!g_extern.filter.psize || !g_extern.filter.prender)
{
RARCH_ERR("Failed to find functions in filter...\n");
dylib_close(g_extern.filter.lib);
g_extern.filter.lib = NULL;
return;
}
g_extern.filter.active = true;
struct retro_game_geometry *geom = &g_extern.system.av_info.geometry;
unsigned width = geom->max_width;
unsigned height = geom->max_height;
g_extern.filter.psize(&width, &height);
unsigned pow2_x = next_pow2(width);
unsigned pow2_y = next_pow2(height);
unsigned maxsize = pow2_x > pow2_y ? pow2_x : pow2_y;
g_extern.filter.scale = maxsize / RARCH_SCALE_BASE;
g_extern.filter.buffer = (uint32_t*)malloc(RARCH_SCALE_BASE * RARCH_SCALE_BASE *
g_extern.filter.scale * g_extern.filter.scale * sizeof(uint32_t));
rarch_assert(g_extern.filter.buffer);
g_extern.filter.pitch = RARCH_SCALE_BASE * g_extern.filter.scale * sizeof(uint32_t);
g_extern.filter.colormap = (uint32_t*)malloc(0x10000 * sizeof(uint32_t));
rarch_assert(g_extern.filter.colormap);
// Set up conversion map from 16-bit XRGB1555 to 32-bit ARGB.
for (unsigned i = 0; i < 0x10000; i++)
{
unsigned r = (i >> 10) & 0x1f;
unsigned g = (i >> 5) & 0x1f;
unsigned b = (i >> 0) & 0x1f;
r = (r << 3) | (r >> 2);
g = (g << 3) | (g >> 2);
b = (b << 3) | (b >> 2);
g_extern.filter.colormap[i] = (r << 16) | (g << 8) | (b << 0);
}
}
static void deinit_filter(void)
{
if (!g_extern.filter.active)
return;
g_extern.filter.active = false;
dylib_close(g_extern.filter.lib);
g_extern.filter.lib = NULL;
free(g_extern.filter.buffer);
free(g_extern.filter.colormap);
}
#endif
#ifdef HAVE_XML
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 init_shader_dir(void)
{
if (!*g_settings.video.shader_dir)
return;
g_extern.shader_dir.list = dir_list_new(g_settings.video.shader_dir, "shader", false);
if (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 (unsigned i = 0; i < g_extern.shader_dir.list->size; i++)
RARCH_LOG("Found shader \"%s\"\n", g_extern.shader_dir.list->elems[i].data);
}
#endif
void init_video_input(void)
{
#ifdef HAVE_DYLIB
init_filter();
#endif
#ifdef HAVE_XML
init_shader_dir();
#endif
const struct retro_game_geometry *geom = &g_extern.system.av_info.geometry;
unsigned max_dim = max(geom->max_width, geom->max_height);
unsigned scale = next_pow2(max_dim) / RARCH_SCALE_BASE;
scale = max(scale, 1);
if (g_extern.filter.active)
scale = g_extern.filter.scale;
if (g_settings.video.aspect_ratio < 0.0f)
{
if (geom->aspect_ratio > 0.0f && g_settings.video.aspect_ratio_auto)
g_settings.video.aspect_ratio = geom->aspect_ratio;
else
g_settings.video.aspect_ratio = (float)geom->base_width / geom->base_height; // 1:1 PAR.
RARCH_LOG("Adjusting aspect ratio to %.2f\n", g_settings.video.aspect_ratio);
}
unsigned width;
unsigned height;
if (g_settings.video.fullscreen)
{
width = g_settings.video.fullscreen_x;
height = g_settings.video.fullscreen_y;
}
else
{
if (g_settings.video.force_aspect)
{
width = roundf(geom->base_height * g_settings.video.xscale * g_settings.video.aspect_ratio);
height = roundf(geom->base_height * g_settings.video.yscale);
}
else
{
width = roundf(geom->base_width * g_settings.video.xscale);
height = roundf(geom->base_height * g_settings.video.yscale);
}
}
RARCH_LOG("Video @ %ux%u\n", width, height);
video_info_t video = {0};
video.width = width;
video.height = height;
video.fullscreen = g_settings.video.fullscreen;
video.vsync = g_settings.video.vsync;
video.force_aspect = g_settings.video.force_aspect;
video.smooth = g_settings.video.smooth;
video.input_scale = scale;
video.rgb32 = g_extern.filter.active || g_extern.system.rgb32;
const input_driver_t *tmp = driver.input;
driver.video_data = video_init_func(&video, &driver.input, &driver.input_data);
if (driver.video_data == NULL)
{
RARCH_ERR("Cannot open video driver ... Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
if (driver.video->set_rotation && g_extern.system.rotation)
video_set_rotation_func(g_extern.system.rotation);
// Video driver didn't provide an input driver so we use configured one.
if (driver.input == NULL)
{
driver.input = tmp;
if (driver.input != NULL)
{
driver.input_data = input_init_func();
if (driver.input_data == NULL)
{
RARCH_ERR("Cannot init input driver. Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
}
else
{
RARCH_ERR("Cannot find input driver. Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
}
}
void uninit_video_input(void)
{
if (driver.input_data != driver.video_data && driver.input)
input_free_func();
if (driver.video_data && driver.video)
video_free_func();
#ifdef HAVE_DYLIB
deinit_filter();
#endif
#ifdef HAVE_XML
deinit_shader_dir();
#endif
}
driver_t driver;
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