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RetroArch/driver.c
twinaphex f0dc41757f Cleanup some useless casts
2014-12-15 17:09:40 +01:00

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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 "libretro.h"
#include <stdint.h>
#include <string.h>
#include <math.h>
#include "compat/posix_string.h"
#include "audio/utils.h"
#include "gfx/video_thread_wrapper.h"
#include "audio/audio_thread_wrapper.h"
#include "gfx/gfx_common.h"
#include <string/string_list.h>
#ifdef HAVE_X11
#include "gfx/context/x11_common.h"
#endif
#ifdef HAVE_MENU
#include "menu/menu_common.h"
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
driver_t driver;
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
#if defined(HAVE_SDL) || defined(HAVE_SDL2)
&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
&audio_null,
NULL,
};
const char* config_get_audio_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; audio_drivers[option_k]; option_k++)
{
const char *opt = audio_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
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_SDL2
&video_sdl2,
#endif
#ifdef HAVE_XVIDEO
&video_xvideo,
#endif
#ifdef GEKKO
&video_gx,
#endif
#ifdef HAVE_VG
&video_vg,
#endif
#ifdef HAVE_OMAP
&video_omap,
#endif
#ifdef HAVE_EXYNOS
&video_exynos,
#endif
&video_null,
NULL,
};
const char* config_get_video_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; video_drivers[option_k]; option_k++)
{
const char *opt = video_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
static const input_driver_t *input_drivers[] = {
#ifdef __CELLOS_LV2__
&input_ps3,
#endif
#if defined(SN_TARGET_PSP2) || defined(PSP)
&input_psp,
#endif
#if defined(HAVE_SDL) || defined(HAVE_SDL2)
&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
&input_null,
NULL,
};
const char* config_get_input_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; input_drivers[option_k]; option_k++)
{
const char *opt = input_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
static const input_osk_driver_t *osk_drivers[] = {
#ifdef __CELLOS_LV2__
&input_ps3_osk,
#endif
&input_null_osk,
NULL,
};
const char* config_get_osk_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; osk_drivers[option_k]; option_k++)
{
const char *opt = osk_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
static const camera_driver_t *camera_drivers[] = {
#ifdef HAVE_V4L2
&camera_v4l2,
#endif
#ifdef EMSCRIPTEN
&camera_rwebcam,
#endif
#ifdef ANDROID
&camera_android,
#endif
#if defined(MAC_OS_X_VERSION_10_7) || defined(__IPHONE_4_0)
&camera_apple,
#endif
&camera_null,
NULL,
};
const char* config_get_camera_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; camera_drivers[option_k]; option_k++)
{
const char *opt = camera_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
static const location_driver_t *location_drivers[] = {
#ifdef ANDROID
&location_android,
#endif
#if defined(IOS) || defined(OSX)
#ifdef HAVE_LOCATION
&location_apple,
#endif
#endif
&location_null,
NULL,
};
const char* config_get_location_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; location_drivers[option_k]; option_k++)
{
const char *opt = location_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
#ifdef HAVE_MENU
static const menu_ctx_driver_t *menu_ctx_drivers[] = {
#ifdef IOS
&menu_ctx_ios,
#endif
#if defined(HAVE_RMENU)
&menu_ctx_rmenu,
#endif
#if defined(HAVE_RMENU_XUI)
&menu_ctx_rmenu_xui,
#endif
#if defined(HAVE_LAKKA)
&menu_ctx_lakka,
#endif
#if defined(HAVE_GLUI)
&menu_ctx_glui,
#endif
#if defined(HAVE_XMB)
&menu_ctx_xmb,
#endif
#if defined(HAVE_RGUI)
&menu_ctx_rgui,
#endif
NULL
};
const char* config_get_menu_driver_options(void)
{
union string_list_elem_attr attr;
char *options = NULL;
int option_k = 0;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
for (option_k = 0; menu_ctx_drivers[option_k]; option_k++)
{
const char *opt = menu_ctx_drivers[option_k]->ident;
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
#endif
static const void *find_driver_nonempty(const char *label, int i,
char *str, size_t sizeof_str)
{
const void *drv = NULL;
if (!strcmp(label, "camera_driver"))
{
drv = camera_drivers[i];
if (drv)
strlcpy(str, camera_drivers[i]->ident, sizeof_str);
}
else if (!strcmp(label, "location_driver"))
{
drv = location_drivers[i];
if (drv)
strlcpy(str, location_drivers[i]->ident, sizeof_str);
}
else if (!strcmp(label, "osk_driver"))
{
drv = osk_drivers[i];
if (drv)
strlcpy(str, osk_drivers[i]->ident, sizeof_str);
}
#ifdef HAVE_MENU
else if (!strcmp(label, "menu_driver"))
{
drv = menu_ctx_drivers[i];
if (drv)
strlcpy(str, menu_ctx_drivers[i]->ident, sizeof_str);
}
#endif
else if (!strcmp(label, "input_driver"))
{
drv = input_drivers[i];
if (drv)
strlcpy(str, input_drivers[i]->ident, sizeof_str);
}
else if (!strcmp(label, "input_joypad_driver"))
{
drv = joypad_drivers[i];
if (drv)
strlcpy(str, joypad_drivers[i]->ident, sizeof_str);
}
else if (!strcmp(label, "video_driver"))
{
drv = video_drivers[i];
if (drv)
strlcpy(str, video_drivers[i]->ident, sizeof_str);
}
else if (!strcmp(label, "audio_driver"))
{
drv = audio_drivers[i];
if (drv)
strlcpy(str, audio_drivers[i]->ident, sizeof_str);
}
return drv;
}
static int find_driver_index(const char * label, const char *drv)
{
unsigned i;
char str[PATH_MAX];
const void *obj = NULL;
for (i = 0; (obj = (const void*)
find_driver_nonempty(label, i, str, sizeof(str))) != NULL; i++)
{
if (!obj)
return -1;
if (str[0] == '\0')
break;
if (!strcasecmp(drv, str))
return i;
}
return -1;
}
void find_prev_driver(const char *label, char *str, size_t sizeof_str)
{
int i = find_driver_index(label, str);
if (i > 0)
find_driver_nonempty(label, i - 1, str, sizeof_str);
else
RARCH_WARN(
"Couldn't find any previous driver (current one: \"%s\").\n", str);
}
void find_next_driver(const char *label, char *str, size_t sizeof_str)
{
int i = find_driver_index(label, str);
if (i >= 0)
find_driver_nonempty(label, i + 1, str, sizeof_str);
else
RARCH_WARN("Couldn't find any next driver (current one: \"%s\").\n", str);
}
static void find_osk_driver(void)
{
int i = find_driver_index("osk_driver", g_settings.osk.driver);
if (i >= 0)
driver.osk = osk_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any OSK driver named \"%s\"\n",
g_settings.osk.driver);
RARCH_LOG_OUTPUT("Available OSK drivers are:\n");
for (d = 0; osk_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", osk_drivers[d]->ident);
RARCH_WARN("Going to default to first OSK driver...\n");
driver.osk = osk_drivers[0];
if (!driver.osk)
rarch_fail(1, "find_osk_driver()");
}
}
static void init_osk(void)
{
/* Resource leaks will follow if osk is initialized twice. */
if (driver.osk_data)
return;
find_osk_driver();
/* FIXME - refactor params later based on semantics */
driver.osk_data = driver.osk->init(0);
if (!driver.osk_data)
{
RARCH_ERR("Failed to initialize OSK driver. Will continue without OSK.\n");
driver.osk_active = false;
}
}
static void uninit_osk(void)
{
if (driver.osk_data && driver.osk && driver.osk->free)
driver.osk->free(driver.osk_data);
driver.osk_data = NULL;
}
static void find_camera_driver(void)
{
int i = find_driver_index("camera_driver", g_settings.camera.driver);
if (i >= 0)
driver.camera = camera_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any camera driver named \"%s\"\n",
g_settings.camera.driver);
RARCH_LOG_OUTPUT("Available camera drivers are:\n");
for (d = 0; camera_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", camera_drivers[d]->ident);
RARCH_WARN("Going to default to first camera driver...\n");
driver.camera = camera_drivers[0];
if (!driver.camera)
rarch_fail(1, "find_camera_driver()");
}
}
bool driver_camera_start(void)
{
if (driver.camera && driver.camera_data && driver.camera->start)
{
if (g_settings.camera.allow)
return driver.camera->start(driver.camera_data);
msg_queue_push(g_extern.msg_queue,
"Camera is explicitly disabled.\n", 1, 180);
}
return false;
}
void driver_camera_stop(void)
{
if (driver.camera && driver.camera->stop && driver.camera_data)
driver.camera->stop(driver.camera_data);
}
void driver_camera_poll(void)
{
if (driver.camera && driver.camera->poll && driver.camera_data)
driver.camera->poll(driver.camera_data,
g_extern.system.camera_callback.frame_raw_framebuffer,
g_extern.system.camera_callback.frame_opengl_texture);
}
static void init_camera(void)
{
/* Resource leaks will follow if camera is initialized twice. */
if (driver.camera_data)
return;
find_camera_driver();
driver.camera_data = driver.camera->init(
*g_settings.camera.device ? g_settings.camera.device : NULL,
g_extern.system.camera_callback.caps,
g_settings.camera.width ?
g_settings.camera.width : g_extern.system.camera_callback.width,
g_settings.camera.height ?
g_settings.camera.height : g_extern.system.camera_callback.height);
if (!driver.camera_data)
{
RARCH_ERR("Failed to initialize camera driver. Will continue without camera.\n");
driver.camera_active = false;
}
if (g_extern.system.camera_callback.initialized)
g_extern.system.camera_callback.initialized();
}
static void uninit_camera(void)
{
if (driver.camera_data && driver.camera)
{
if (g_extern.system.camera_callback.deinitialized)
g_extern.system.camera_callback.deinitialized();
if (driver.camera->free)
driver.camera->free(driver.camera_data);
}
driver.camera_data = NULL;
}
static void find_location_driver(void)
{
int i = find_driver_index("location_driver", g_settings.location.driver);
if (i >= 0)
driver.location = location_drivers[i];
else
{
unsigned d;
RARCH_ERR("Couldn't find any location driver named \"%s\"\n",
g_settings.location.driver);
RARCH_LOG_OUTPUT("Available location drivers are:\n");
for (d = 0; location_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", location_drivers[d]->ident);
RARCH_WARN("Going to default to first location driver...\n");
driver.location = location_drivers[0];
if (!driver.location)
rarch_fail(1, "find_location_driver()");
}
}
bool driver_location_start(void)
{
if (driver.location && driver.location_data && driver.location->start)
{
if (g_settings.location.allow)
return driver.location->start(driver.location_data);
msg_queue_push(g_extern.msg_queue, "Location is explicitly disabled.\n", 1, 180);
}
return false;
}
void driver_location_stop(void)
{
if (driver.location && driver.location->stop && driver.location_data)
driver.location->stop(driver.location_data);
}
void driver_location_set_interval(unsigned interval_msecs,
unsigned interval_distance)
{
if (driver.location && driver.location->set_interval
&& driver.location_data)
driver.location->set_interval(driver.location_data,
interval_msecs, interval_distance);
}
bool driver_location_get_position(double *lat, double *lon,
double *horiz_accuracy, double *vert_accuracy)
{
if (driver.location && driver.location->get_position
&& driver.location_data)
return driver.location->get_position(driver.location_data,
lat, lon, horiz_accuracy, vert_accuracy);
*lat = 0.0;
*lon = 0.0;
*horiz_accuracy = 0.0;
*vert_accuracy = 0.0;
return false;
}
static void init_location(void)
{
/* Resource leaks will follow if location interface is initialized twice. */
if (driver.location_data)
return;
find_location_driver();
driver.location_data = driver.location->init();
if (!driver.location_data)
{
RARCH_ERR("Failed to initialize location driver. Will continue without location.\n");
driver.location_active = false;
}
if (g_extern.system.location_callback.initialized)
g_extern.system.location_callback.initialized();
}
static void uninit_location(void)
{
if (driver.location_data && driver.location)
{
if (g_extern.system.location_callback.deinitialized)
g_extern.system.location_callback.deinitialized();
if (driver.location->free)
driver.location->free(driver.location_data);
}
driver.location_data = NULL;
}
#ifdef HAVE_MENU
static void find_menu_driver(void)
{
int i = find_driver_index("menu_driver", g_settings.menu.driver);
if (i >= 0)
driver.menu_ctx = menu_ctx_drivers[i];
else
{
unsigned d;
RARCH_WARN("Couldn't find any menu driver named \"%s\"\n",
g_settings.menu.driver);
RARCH_LOG_OUTPUT("Available menu drivers are:\n");
for (d = 0; menu_ctx_drivers[d]; d++)
RARCH_LOG_OUTPUT("\t%s\n", menu_ctx_drivers[d]->ident);
RARCH_WARN("Going to default to first menu driver...\n");
driver.menu_ctx = menu_ctx_drivers[0];
if (!driver.menu_ctx)
rarch_fail(1, "find_menu_driver()");
}
}
#endif
static void find_audio_driver(void)
{
int i = find_driver_index("audio_driver", 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_WARN("Going to default to first audio driver...\n");
driver.audio = audio_drivers[0];
if (!driver.audio)
rarch_fail(1, "find_audio_driver()");
}
}
static void find_video_driver(void)
{
int i;
#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
if (driver.frontend_ctx &&
driver.frontend_ctx->get_video_driver)
{
driver.video = driver.frontend_ctx->get_video_driver();
if (driver.video)
return;
RARCH_WARN("Frontend supports get_video_driver() but did not specify one.\n");
}
i = find_driver_index("video_driver", 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_WARN("Going to default to first video driver...\n");
driver.video = video_drivers[0];
if (!driver.video)
rarch_fail(1, "find_video_driver()");
}
}
static void find_input_driver(void)
{
int i = find_driver_index("input_driver", 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_WARN("Going to default to first input driver...\n");
driver.input = input_drivers[0];
if (!driver.input)
rarch_fail(1, "find_input_driver()");
}
}
void init_drivers_pre(void)
{
find_audio_driver();
find_video_driver();
find_input_driver();
find_camera_driver();
find_location_driver();
find_osk_driver();
#ifdef HAVE_MENU
find_menu_driver();
#endif
}
static void adjust_system_rates(void)
{
float timing_skew;
const struct retro_system_timing *info =
(const struct retro_system_timing*)&g_extern.system.av_info.timing;
g_extern.system.force_nonblock = false;
if (info->fps <= 0.0 || info->sample_rate <= 0.0)
return;
timing_skew = fabs(1.0f - info->fps / g_settings.video.refresh_rate);
if (timing_skew > g_settings.audio.max_timing_skew)
{
/* 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_extern.audio_data.in_rate = info->sample_rate;
}
else
g_extern.audio_data.in_rate = info->sample_rate *
(g_settings.video.refresh_rate / info->fps);
RARCH_LOG("Set audio input rate to: %.2f Hz.\n",
g_extern.audio_data.in_rate);
if (driver.video_data)
{
if (g_extern.system.force_nonblock)
rarch_main_command(RARCH_CMD_VIDEO_SET_NONBLOCKING_STATE);
else
driver_set_nonblock_state(driver.nonblock_state);
}
}
void driver_set_monitor_refresh_rate(float hz)
{
char msg[PATH_MAX];
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_extern.audio_data.in_rate;
}
void driver_set_nonblock_state(bool nonblock)
{
/* Only apply non-block-state for video if we're using vsync. */
if (driver.video_active && driver.video_data)
{
bool video_nonblock = nonblock;
if (!g_settings.video.vsync || g_extern.system.force_nonblock)
video_nonblock = true;
driver.video->set_nonblock_state(driver.video_data, video_nonblock);
}
if (driver.audio_active && driver.audio_data)
driver.audio->set_nonblock_state(driver.audio_data,
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);
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);
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);
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);
#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);
#endif
return NULL;
}
bool driver_update_system_av_info(const struct retro_system_av_info *info)
{
g_extern.system.av_info = *info;
rarch_main_command(RARCH_CMD_REINIT);
/* Cannot continue recording with different parameters.
* Take the easiest route out and just restart the recording. */
if (driver.recording_data)
{
static const char *msg = "Restarting recording due to driver reinit.";
msg_queue_push(g_extern.msg_queue, msg, 2, 180);
RARCH_WARN("%s\n", msg);
rarch_main_command(RARCH_CMD_RECORD_DEINIT);
rarch_main_command(RARCH_CMD_RECORD_INIT);
}
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()");
}
if (!(menu_init_list(driver.menu)))
{
RARCH_ERR("Cannot initialize menu lists.\n");
rarch_fail(1, "init_menu()");
}
}
#endif
static void init_audio(void)
{
size_t max_bufsamples = AUDIO_CHUNK_SIZE_NONBLOCKING * 2;
size_t outsamples_max;
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. */
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)
{
driver.audio_active = false;
return;
}
find_audio_driver();
#ifdef HAVE_THREADS
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 = driver.audio->init(*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");
driver.audio_active = false;
}
g_extern.audio_data.use_float = false;
if (driver.audio_active && driver.audio->use_float(driver.audio_data))
g_extern.audio_data.use_float = true;
if (!g_settings.audio.sync && driver.audio_active)
{
rarch_main_command(RARCH_CMD_AUDIO_SET_NONBLOCKING_STATE);
g_extern.audio_data.chunk_size =
g_extern.audio_data.nonblock_chunk_size;
}
/* Should never happen. */
if (g_extern.audio_data.in_rate <= 0.0f)
{
RARCH_WARN("Input rate is invalid (%.3f Hz). Using output rate (%u Hz).\n",
g_extern.audio_data.in_rate, g_settings.audio.out_rate);
g_extern.audio_data.in_rate = g_settings.audio.out_rate;
}
g_extern.audio_data.orig_src_ratio =
g_extern.audio_data.src_ratio =
(double)g_settings.audio.out_rate / g_extern.audio_data.in_rate;
if (!rarch_resampler_realloc(&driver.resampler_data,
&driver.resampler,
g_settings.audio.resampler, g_extern.audio_data.orig_src_ratio))
{
RARCH_ERR("Failed to initialize resampler \"%s\".\n",
g_settings.audio.resampler);
driver.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_extern.audio_data.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 && driver.audio_active &&
g_settings.audio.rate_control)
{
if (driver.audio->buffer_size && driver.audio->write_avail)
{
g_extern.audio_data.driver_buffer_size =
driver.audio->buffer_size(driver.audio_data);
g_extern.audio_data.rate_control = true;
}
else
RARCH_WARN("Audio rate control was desired, but driver does not support needed features.\n");
}
rarch_main_command(RARCH_CMD_DSP_FILTER_DEINIT);
g_extern.measure_data.buffer_free_samples_count = 0;
if (driver.audio_active && !g_extern.audio_data.mute &&
g_extern.system.audio_callback.callback)
{
/* Threaded driver is initially stopped. */
driver.audio->start(driver.audio_data);
}
}
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 bool init_video_pixel_converter(unsigned size)
{
/* This function can be called multiple times
* without deiniting first on consoles. */
deinit_pixel_converter();
if (g_extern.system.pix_fmt == RETRO_PIXEL_FORMAT_0RGB1555)
{
RARCH_WARN("0RGB1555 pixel format is deprecated, and will be slower. For 15/16-bit, RGB565 format is preferred.\n");
driver.scaler.scaler_type = SCALER_TYPE_POINT;
driver.scaler.in_fmt = SCALER_FMT_0RGB1555;
/* TODO: Pick either ARGB8888 or RGB565 depending on driver. */
driver.scaler.out_fmt = SCALER_FMT_RGB565;
if (!scaler_ctx_gen_filter(&driver.scaler))
return false;
driver.scaler_out = calloc(sizeof(uint16_t), size * size);
}
return true;
}
static void deinit_video_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 init_video_filter(enum retro_pixel_format colfmt)
{
unsigned width, height, pow2_x, pow2_y, maxsize;
struct retro_game_geometry *geom = NULL;
deinit_video_filter();
if (!*g_settings.video.softfilter_plugin)
return;
/* 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;
}
geom = (struct retro_game_geometry*)&g_extern.system.av_info.geometry;
width = geom->max_width;
height = geom->max_height;
g_extern.filter.filter = rarch_softfilter_new(
g_settings.video.softfilter_plugin,
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");
deinit_video_filter();
}
static void init_video_input(void)
{
unsigned max_dim, scale, width, height;
rarch_viewport_t *custom_vp;
const input_driver_t *tmp = NULL;
const struct retro_game_geometry *geom = NULL;
video_info_t video = {0};
static uint16_t dummy_pixels[32] = {0};
init_video_filter(g_extern.system.pix_fmt);
rarch_main_command(RARCH_CMD_SHADER_DIR_INIT);
geom = (const struct retro_game_geometry*)&g_extern.system.av_info.geometry;
max_dim = max(geom->max_width, geom->max_height);
scale = next_pow2(max_dim) / RARCH_SCALE_BASE;
scale = max(scale, 1);
if (g_extern.filter.filter)
scale = g_extern.filter.scale;
/* Update core-dependent aspect ratio values. */
gfx_set_square_pixel_viewport(geom->base_width, geom->base_height);
gfx_set_core_viewport();
gfx_set_config_viewport();
/* Update CUSTOM viewport. */
custom_vp = (rarch_viewport_t*)&g_extern.console.screen.viewports.custom_vp;
if (g_settings.video.aspect_ratio_idx == ASPECT_RATIO_CUSTOM)
{
float default_aspect = aspectratio_lut[ASPECT_RATIO_CORE].value;
aspectratio_lut[ASPECT_RATIO_CUSTOM].value =
(custom_vp->width && custom_vp->height) ?
(float)custom_vp->width / custom_vp->height : default_aspect;
}
g_extern.system.aspect_ratio =
aspectratio_lut[g_settings.video.aspect_ratio_idx].value;
if (g_settings.video.fullscreen)
{
width = g_settings.video.fullscreen_x;
height = g_settings.video.fullscreen_y;
}
else
{
if (g_settings.video.force_aspect)
{
/* Do rounding here to simplify integer scale correctness. */
unsigned base_width = roundf(geom->base_height *
g_extern.system.aspect_ratio);
width = roundf(base_width * g_settings.video.scale);
height = roundf(geom->base_height * g_settings.video.scale);
}
else
{
width = roundf(geom->base_width * g_settings.video.scale);
height = roundf(geom->base_height * g_settings.video.scale);
}
}
if (width && height)
RARCH_LOG("Video @ %ux%u\n", width, height);
else
RARCH_LOG("Video @ fullscreen\n");
driver.display_type = RARCH_DISPLAY_NONE;
driver.video_display = 0;
driver.video_window = 0;
if (!init_video_pixel_converter(RARCH_SCALE_BASE * scale))
{
RARCH_ERR("Failed to initialize pixel converter.\n");
rarch_fail(1, "init_video_input()");
}
video.width = width;
video.height = height;
video.fullscreen = g_settings.video.fullscreen;
video.vsync = g_settings.video.vsync && !g_extern.system.force_nonblock;
video.force_aspect = g_settings.video.force_aspect;
#ifdef GEKKO
video.viwidth = g_settings.video.viwidth;
video.vfilter = g_settings.video.vfilter;
#endif
video.smooth = g_settings.video.smooth;
video.input_scale = scale;
video.rgb32 = g_extern.filter.filter ?
g_extern.filter.out_rgb32 :
(g_extern.system.pix_fmt == RETRO_PIXEL_FORMAT_XRGB8888);
tmp = (const input_driver_t*)driver.input;
/* Need to grab the "real" video driver interface on a reinit. */
find_video_driver();
#ifdef HAVE_THREADS
if (g_settings.video.threaded && !g_extern.system.hw_render_callback.context_type)
{
/* Can't do hardware rendering with threaded driver currently. */
RARCH_LOG("Starting threaded video driver ...\n");
if (!rarch_threaded_video_init(&driver.video, &driver.video_data,
&driver.input, &driver.input_data,
driver.video, &video))
{
RARCH_ERR("Cannot open threaded video driver ... Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
}
else
#endif
driver.video_data = driver.video->init(&video, &driver.input,
&driver.input_data);
if (!driver.video_data)
{
RARCH_ERR("Cannot open video driver ... Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
driver.video_poke = NULL;
if (driver.video->poke_interface)
driver.video->poke_interface(driver.video_data, &driver.video_poke);
if (driver.video->viewport_info && (!custom_vp->width ||
!custom_vp->height))
{
/* Force custom viewport to have sane parameters. */
custom_vp->width = width;
custom_vp->height = height;
driver.video->viewport_info(driver.video_data, custom_vp);
}
if (driver.video->set_rotation)
driver.video->set_rotation(driver.video_data,
(g_settings.video.rotation + g_extern.system.rotation) % 4);
#ifdef HAVE_X11
if (driver.display_type == RARCH_DISPLAY_X11)
{
RARCH_LOG("Suspending screensaver (X11).\n");
x11_suspend_screensaver(driver.video_window);
}
#endif
if (!driver.input)
{
/* Video driver didn't provide an input driver,
* so we use configured one. */
RARCH_LOG("Graphics driver did not initialize an input driver. Attempting to pick a suitable driver.\n");
if (tmp)
driver.input = tmp;
else
find_input_driver();
if (!driver.input)
{
/* This should never really happen as tmp (driver.input) is always
* found before this in find_driver_input(), or we have aborted
* in a similar fashion anyways. */
rarch_fail(1, "init_video_input()");
}
driver.input_data = driver.input->init();
if (!driver.input_data)
{
RARCH_ERR("Cannot initialize input driver. Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
}
rarch_main_command(RARCH_CMD_OVERLAY_DEINIT);
rarch_main_command(RARCH_CMD_OVERLAY_INIT);
g_extern.measure_data.frame_time_samples_count = 0;
g_extern.frame_cache.width = 4;
g_extern.frame_cache.height = 4;
g_extern.frame_cache.pitch = 8;
g_extern.frame_cache.data = &dummy_pixels;
if (driver.video_poke && driver.video_poke->set_texture_frame)
driver.video_poke->set_texture_frame(driver.video_data,
&dummy_pixels, false, 1, 1, 1.0f);
}
void init_drivers(int flags)
{
if (flags & DRIVER_VIDEO)
driver.video_data_own = false;
if (flags & DRIVER_AUDIO)
driver.audio_data_own = false;
if (flags & DRIVER_INPUT)
driver.input_data_own = false;
if (flags & DRIVER_CAMERA)
driver.camera_data_own = false;
if (flags & DRIVER_LOCATION)
driver.location_data_own = false;
if (flags & DRIVER_OSK)
driver.osk_data_own = false;
#ifdef HAVE_MENU
/* By default, we want the menu to persist through driver reinits. */
driver.menu_data_own = true;
#endif
if (flags & (DRIVER_VIDEO | DRIVER_AUDIO))
adjust_system_rates();
if (flags & DRIVER_VIDEO)
{
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;
g_extern.system.frame_time_last = 0;
}
if (flags & DRIVER_AUDIO)
init_audio();
/* Only initialize camera driver if we're ever going to use it. */
if ((flags & DRIVER_CAMERA) && driver.camera_active)
init_camera();
/* Only initialize location driver if we're ever going to use it. */
if ((flags & DRIVER_LOCATION) && driver.location_active)
init_location();
if (flags & DRIVER_OSK)
init_osk();
#ifdef HAVE_MENU
if (flags & DRIVER_MENU)
{
init_menu();
if (driver.menu && driver.menu_ctx && driver.menu_ctx->context_reset)
driver.menu_ctx->context_reset(driver.menu);
}
#endif
if (flags & (DRIVER_VIDEO | DRIVER_AUDIO))
{
/* Keep non-throttled state as good as possible. */
if (driver.nonblock_state)
driver_set_nonblock_state(driver.nonblock_state);
}
}
static void compute_monitor_fps_statistics(void)
{
double avg_fps = 0.0, stddev = 0.0;
unsigned samples = 0;
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;
}
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);
}
}
static void compute_audio_buffer_statistics(void)
{
unsigned i, low_water_size, high_water_size, avg, stddev;
float avg_filled, deviation;
uint64_t accum = 0, accum_var = 0;
unsigned low_water_count = 0, high_water_count = 0;
unsigned samples = min(g_extern.measure_data.buffer_free_samples_count,
AUDIO_BUFFER_FREE_SAMPLES_COUNT);
if (samples < 3)
return;
for (i = 1; i < samples; i++)
accum += g_extern.measure_data.buffer_free_samples[i];
avg = accum / (samples - 1);
for (i = 1; i < samples; i++)
{
int diff = avg - g_extern.measure_data.buffer_free_samples[i];
accum_var += diff * diff;
}
stddev = (unsigned)sqrt((double)accum_var / (samples - 2));
avg_filled = 1.0f - (float)avg / g_extern.audio_data.driver_buffer_size;
deviation = (float)stddev / g_extern.audio_data.driver_buffer_size;
low_water_size = g_extern.audio_data.driver_buffer_size * 3 / 4;
high_water_size = g_extern.audio_data.driver_buffer_size / 4;
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));
}
static 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)
{
driver.audio_active = false;
return;
}
rarch_resampler_freep(&driver.resampler,
&driver.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_main_command(RARCH_CMD_DSP_FILTER_DEINIT);
compute_audio_buffer_statistics();
}
static void uninit_video_input(void)
{
rarch_main_command(RARCH_CMD_OVERLAY_DEINIT);
if (
!driver.input_data_own &&
(driver.input_data != driver.video_data) &&
driver.input &&
driver.input->free)
driver.input->free(driver.input_data);
if (
!driver.video_data_own &&
driver.video_data &&
driver.video &&
driver.video->free)
driver.video->free(driver.video_data);
deinit_pixel_converter();
deinit_video_filter();
rarch_main_command(RARCH_CMD_SHADER_DIR_DEINIT);
compute_monitor_fps_statistics();
}
void uninit_drivers(int flags)
{
if (flags & DRIVER_AUDIO)
uninit_audio();
if (flags & DRIVER_VIDEO)
{
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 (flags & DRIVER_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_list(driver.menu);
menu_free(driver.menu);
driver.menu = NULL;
}
}
#endif
if (flags & DRIVERS_VIDEO_INPUT)
uninit_video_input();
if ((flags & DRIVER_VIDEO) && !driver.video_data_own)
driver.video_data = NULL;
if ((flags & DRIVER_CAMERA) && !driver.camera_data_own)
{
uninit_camera();
driver.camera_data = NULL;
}
if ((flags & DRIVER_LOCATION) && !driver.location_data_own)
{
uninit_location();
driver.location_data = NULL;
}
if ((flags & DRIVER_OSK) && !driver.osk_data_own)
{
uninit_osk();
driver.osk_data = NULL;
}
if ((flags & DRIVER_INPUT) && !driver.input_data_own)
driver.input_data = NULL;
if ((flags & DRIVER_AUDIO) && !driver.audio_data_own)
driver.audio_data = NULL;
}
bool driver_monitor_fps_statistics(double *refresh_rate,
double *deviation, unsigned *sample_points)
{
unsigned i;
retro_time_t accum = 0, avg, accum_var = 0;
unsigned samples = min(MEASURE_FRAME_TIME_SAMPLES_COUNT,
g_extern.measure_data.frame_time_samples_count);
if (g_settings.video.threaded || (samples < 2))
return false;
/* Measure statistics on frame time (microsecs), *not* FPS. */
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
avg = accum / samples;
/* 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 *driver_video_resolve(const video_driver_t **drv)
{
#ifdef HAVE_THREADS
if (g_settings.video.threaded
&& !g_extern.system.hw_render_callback.context_type)
return rarch_threaded_video_resolve(drv);
#endif
if (drv)
*drv = driver.video;
return driver.video_data;
}
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