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RetroArch/gfx/video_driver.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - 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 <string.h>
#include <string/string_list.h>
#include "video_driver.h"
#include "video_thread_wrapper.h"
#include "video_pixel_converter.h"
#include "video_monitor.h"
#include "../general.h"
#include "../performance.h"
#include "../retroarch.h"
#ifndef MEASURE_FRAME_TIME_SAMPLES_COUNT
#define MEASURE_FRAME_TIME_SAMPLES_COUNT (2 * 1024)
#endif
typedef struct video_driver_state
{
retro_time_t frame_time_samples[MEASURE_FRAME_TIME_SAMPLES_COUNT];
struct retro_hw_render_callback hw_render_callback;
uint64_t frame_time_samples_count;
enum retro_pixel_format pix_fmt;
unsigned video_width;
unsigned video_height;
float aspect_ratio;
struct
{
const void *data;
unsigned width;
unsigned height;
size_t pitch;
} frame_cache;
struct
{
rarch_softfilter_t *filter;
void *buffer;
unsigned scale;
unsigned out_bpp;
bool out_rgb32;
} filter;
} video_driver_state_t;
static video_driver_state_t video_state;
static const video_driver_t *video_drivers[] = {
#ifdef HAVE_OPENGL
&video_gl,
#endif
#ifdef XENON
&video_xenon360,
#endif
#if defined(HAVE_D3D)
&video_d3d,
#endif
#ifdef SN_TARGET_PSP2
&video_vita,
#endif
#ifdef PSP
&video_psp1,
#endif
#ifdef _3DS
&video_ctr,
#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
#ifdef HAVE_DISPMANX
&video_dispmanx,
#endif
#ifdef HAVE_SUNXI
&video_sunxi,
#endif
&video_null,
NULL,
};
/**
* video_driver_find_handle:
* @idx : index of driver to get handle to.
*
* Returns: handle to video driver at index. Can be NULL
* if nothing found.
**/
const void *video_driver_find_handle(int idx)
{
const void *drv = video_drivers[idx];
if (!drv)
return NULL;
return drv;
}
/**
* video_driver_find_ident:
* @idx : index of driver to get handle to.
*
* Returns: Human-readable identifier of video driver at index. Can be NULL
* if nothing found.
**/
const char *video_driver_find_ident(int idx)
{
const video_driver_t *drv = video_drivers[idx];
if (!drv)
return NULL;
return drv->ident;
}
/**
* config_get_video_driver_options:
*
* Get an enumerated list of all video driver names, separated by '|'.
*
* Returns: string listing of all video driver names, separated by '|'.
**/
const char* config_get_video_driver_options(void)
{
union string_list_elem_attr attr;
unsigned i;
char *options = NULL;
int options_len = 0;
struct string_list *options_l = string_list_new();
attr.i = 0;
if (!options_l)
return NULL;
for (i = 0; video_driver_find_handle(i); i++)
{
const char *opt = video_driver_find_ident(i);
options_len += strlen(opt) + 1;
string_list_append(options_l, opt, attr);
}
options = (char*)calloc(options_len, sizeof(char));
if (!options)
{
string_list_free(options_l);
options_l = NULL;
return NULL;
}
string_list_join_concat(options, options_len, options_l, "|");
string_list_free(options_l);
options_l = NULL;
return options;
}
void find_video_driver(void)
{
int i;
driver_t *driver = driver_get_ptr();
settings_t *settings = config_get_ptr();
#if defined(HAVE_OPENGL) && defined(HAVE_FBO)
if (video_state.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", settings->video.driver);
if (i >= 0)
driver->video = (const video_driver_t*)video_driver_find_handle(i);
else
{
unsigned d;
RARCH_ERR("Couldn't find any video driver named \"%s\"\n",
settings->video.driver);
RARCH_LOG_OUTPUT("Available video drivers are:\n");
for (d = 0; video_driver_find_handle(d); d++)
RARCH_LOG_OUTPUT("\t%s\n", video_driver_find_ident(d));
RARCH_WARN("Going to default to first video driver...\n");
driver->video = (const video_driver_t*)video_driver_find_handle(0);
if (!driver->video)
rarch_fail(1, "find_video_driver()");
}
}
/**
* video_driver_get_ptr:
* @drv : real video driver will be set to this.
*
* Use this if you need the real video driver
* and driver data pointers.
*
* Returns: video driver's userdata.
**/
void *video_driver_get_ptr(const video_driver_t **drv)
{
driver_t *driver = driver_get_ptr();
settings_t *settings = config_get_ptr();
#ifdef HAVE_THREADS
if (settings->video.threaded
&& !video_state.hw_render_callback.context_type)
return rarch_threaded_video_get_ptr(drv);
#endif
if (drv)
*drv = driver->video;
return driver->video_data;
}
static const video_poke_interface_t *video_driver_get_poke_ptr(void)
{
driver_t *driver = driver_get_ptr();
if (!driver)
return NULL;
return driver->video_poke;
}
static const video_driver_t *video_driver_ctx_get_ptr(void)
{
driver_t *driver = driver_get_ptr();
if (!driver)
return NULL;
return driver->video;
}
const char *video_driver_get_ident(void)
{
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video)
return video->ident;
return NULL;
}
/**
* video_driver_get_current_framebuffer:
*
* Gets pointer to current hardware renderer framebuffer object.
* Used by RETRO_ENVIRONMENT_SET_HW_RENDER.
*
* Returns: pointer to hardware framebuffer object, otherwise 0.
**/
uintptr_t video_driver_get_current_framebuffer(void)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->get_current_framebuffer)
return poke->get_current_framebuffer(driver->video_data);
return 0;
}
uint64_t video_driver_get_frame_count(void)
{
static bool warn_once = true;
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (!poke || !poke->get_frame_count)
{
if (warn_once)
{
RARCH_WARN("Frame count not implemented!\n");
warn_once = false;
}
return 0;
}
return poke->get_frame_count(driver->video_data);
}
retro_proc_address_t video_driver_get_proc_address(const char *sym)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->get_proc_address)
return poke->get_proc_address(driver->video_data, sym);
return NULL;
}
bool video_driver_set_shader(enum rarch_shader_type type,
const char *path)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->set_shader)
return video->set_shader(driver->video_data, type, path);
return false;
}
static void deinit_video_filter(void)
{
rarch_softfilter_free(video_state.filter.filter);
free(video_state.filter.buffer);
memset(&video_state.filter, 0, sizeof(video_state.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;
settings_t *settings = config_get_ptr();
struct retro_system_av_info *av_info =
video_viewport_get_system_av_info();
deinit_video_filter();
if (!*settings->video.softfilter_plugin)
return;
/* Deprecated format. Gets pre-converted. */
if (colfmt == RETRO_PIXEL_FORMAT_0RGB1555)
colfmt = RETRO_PIXEL_FORMAT_RGB565;
if (video_state.hw_render_callback.context_type)
{
RARCH_WARN("Cannot use CPU filters when hardware rendering is used.\n");
return;
}
geom = av_info ? (struct retro_game_geometry*)&av_info->geometry : NULL;
width = geom->max_width;
height = geom->max_height;
video_state.filter.filter = rarch_softfilter_new(
settings->video.softfilter_plugin,
RARCH_SOFTFILTER_THREADS_AUTO, colfmt, width, height);
if (!video_state.filter.filter)
{
RARCH_ERR("Failed to load filter.\n");
return;
}
rarch_softfilter_get_max_output_size(video_state.filter.filter,
&width, &height);
pow2_x = next_pow2(width);
pow2_y = next_pow2(height);
maxsize = max(pow2_x, pow2_y);
video_state.filter.scale = maxsize / RARCH_SCALE_BASE;
video_state.filter.out_rgb32 = rarch_softfilter_get_output_format(
video_state.filter.filter) == RETRO_PIXEL_FORMAT_XRGB8888;
video_state.filter.out_bpp = video_state.filter.out_rgb32 ?
sizeof(uint32_t) : sizeof(uint16_t);
/* TODO: Aligned output. */
video_state.filter.buffer = malloc(width * height * video_state.filter.out_bpp);
if (!video_state.filter.buffer)
goto error;
return;
error:
RARCH_ERR("Softfilter initialization failed.\n");
deinit_video_filter();
}
static void init_video_input(const input_driver_t *tmp)
{
driver_t *driver = driver_get_ptr();
/* 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 = input_driver_init();
if (driver->input_data)
return;
RARCH_ERR("Cannot initialize input driver. Exiting ...\n");
rarch_fail(1, "init_video_input()");
}
void uninit_video_input(void)
{
driver_t *driver = driver_get_ptr();
event_command(EVENT_CMD_OVERLAY_DEINIT);
if (
!driver->input_data_own &&
(driver->input_data != driver->video_data)
)
input_driver_free();
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();
video_driver_unset_callback();
event_command(EVENT_CMD_SHADER_DIR_DEINIT);
video_monitor_compute_fps_statistics();
}
void init_video(void)
{
unsigned max_dim, scale, width, height;
video_viewport_t *custom_vp = NULL;
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};
driver_t *driver = driver_get_ptr();
settings_t *settings = config_get_ptr();
rarch_system_info_t *system = rarch_system_info_get_ptr();
struct retro_system_av_info *av_info =
video_viewport_get_system_av_info();
init_video_filter(video_state.pix_fmt);
event_command(EVENT_CMD_SHADER_DIR_INIT);
if (av_info)
geom = (const struct retro_game_geometry*)&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 (video_state.filter.filter)
scale = video_state.filter.scale;
/* Update core-dependent aspect ratio values. */
video_viewport_set_square_pixel(geom->base_width, geom->base_height);
video_viewport_set_core();
video_viewport_set_config();
/* Update CUSTOM viewport. */
custom_vp = video_viewport_get_custom();
if (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;
}
video_driver_set_aspect_ratio_value(
aspectratio_lut[settings->video.aspect_ratio_idx].value);
if (settings->video.fullscreen)
{
width = settings->video.fullscreen_x;
height = settings->video.fullscreen_y;
}
else
{
if (settings->video.force_aspect)
{
/* Do rounding here to simplify integer scale correctness. */
unsigned base_width =
roundf(geom->base_height * video_driver_get_aspect_ratio());
width = roundf(base_width * settings->video.scale);
}
else
width = roundf(geom->base_width * settings->video.scale);
height = roundf(geom->base_height * 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()");
}
video.width = width;
video.height = height;
video.fullscreen = settings->video.fullscreen;
video.vsync = settings->video.vsync && !system->force_nonblock;
video.force_aspect = settings->video.force_aspect;
#ifdef GEKKO
video.viwidth = settings->video.viwidth;
video.vfilter = settings->video.vfilter;
#endif
video.smooth = settings->video.smooth;
video.input_scale = scale;
video.rgb32 = video_state.filter.filter ?
video_state.filter.out_rgb32 :
(video_state.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 (settings->video.threaded && !video_state.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()");
}
}
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()");
}
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;
video_driver_viewport_info(custom_vp);
}
video_driver_set_rotation(
(settings->video.rotation + system->rotation) % 4);
video_driver_suppress_screensaver(settings->ui.suspend_screensaver_enable);
if (!driver->input)
init_video_input(tmp);
event_command(EVENT_CMD_OVERLAY_DEINIT);
event_command(EVENT_CMD_OVERLAY_INIT);
video_driver_cached_frame_set(&dummy_pixels, 4, 4, 8);
#if defined(PSP)
video_driver_set_texture_frame(&dummy_pixels, false, 1, 1, 1.0f);
#endif
}
bool video_driver_suppress_screensaver(bool enable)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
return video->suppress_screensaver(driver->video_data, enable);
}
bool video_driver_has_windowed(void)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
return video->has_windowed(driver->video_data);
}
void video_driver_set_nonblock_state(bool toggle)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->set_nonblock_state)
video->set_nonblock_state(driver->video_data, toggle);
}
bool video_driver_set_viewport(unsigned width, unsigned height,
bool force_fullscreen, bool allow_rotate)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->set_viewport)
{
video->set_viewport(driver->video_data, width, height,
force_fullscreen, allow_rotate);
return true;
}
return false;
}
bool video_driver_set_rotation(unsigned rotation)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->set_rotation)
{
video->set_rotation(driver->video_data, rotation);
return true;
}
return false;
}
void video_driver_set_video_mode(unsigned width,
unsigned height, bool fullscreen)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->set_video_mode)
poke->set_video_mode(driver->video_data,
width, height, fullscreen);
}
bool video_driver_get_video_output_size(unsigned *width, unsigned *height)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->get_video_output_size)
{
poke->get_video_output_size(driver->video_data, width, height);
return true;
}
return false;
}
void video_driver_set_aspect_ratio(unsigned aspectratio_index)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->set_aspect_ratio)
poke->set_aspect_ratio(driver->video_data, aspectratio_index);
}
void video_driver_show_mouse(bool state)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->show_mouse)
poke->show_mouse(driver->video_data, state);
}
void video_driver_set_osd_msg(const char *msg,
const struct font_params *params, void *font)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->set_osd_msg)
poke->set_osd_msg(driver->video_data, msg, params, font);
}
void video_driver_set_texture_enable(bool enable, bool fullscreen)
{
#ifdef HAVE_MENU
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->set_texture_enable)
poke->set_texture_enable(driver->video_data,
enable, fullscreen);
#endif
}
void video_driver_set_texture_frame(const void *frame, bool rgb32,
unsigned width, unsigned height, float alpha)
{
#ifdef HAVE_MENU
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->set_texture_frame)
poke->set_texture_frame(driver->video_data,
frame, rgb32, width, height, alpha);
#endif
}
bool video_driver_viewport_info(struct video_viewport *vp)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->viewport_info)
{
video->viewport_info(driver->video_data, vp);
return true;
}
return false;
}
bool video_driver_read_viewport(uint8_t *buffer)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->read_viewport)
return video->read_viewport(driver->video_data,
buffer);
return false;
}
bool video_driver_focus(void)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
return video->focus(driver->video_data);
}
#ifdef HAVE_OVERLAY
bool video_driver_overlay_interface(const video_overlay_interface_t **iface)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->overlay_interface)
{
video->overlay_interface(driver->video_data, iface);
return true;
}
return false;
}
#endif
void * video_driver_read_frame_raw(unsigned *width,
unsigned *height, size_t *pitch)
{
driver_t *driver = driver_get_ptr();
const video_driver_t *video = video_driver_ctx_get_ptr();
if (video->read_frame_raw)
return video->read_frame_raw(driver->video_data, width,
height, pitch);
return NULL;
}
void video_driver_set_filtering(unsigned index, bool smooth)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->set_filtering)
poke->set_filtering(driver->video_data, index, smooth);
}
void video_driver_apply_state_changes(void)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->apply_state_changes)
poke->apply_state_changes(driver->video_data);
}
void video_driver_get_video_output_next(void)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->get_video_output_next)
poke->get_video_output_next(driver->video_data);
}
void video_driver_get_video_output_prev(void)
{
driver_t *driver = driver_get_ptr();
const video_poke_interface_t *poke = video_driver_get_poke_ptr();
if (poke && poke->get_video_output_prev)
poke->get_video_output_prev(driver->video_data);
}
/**
* video_driver_cached_frame:
*
* Renders the current video frame.
**/
void video_driver_cached_frame(void)
{
driver_t *driver = driver_get_ptr();
runloop_t *runloop = rarch_main_get_ptr();
void *recording = driver ? driver->recording_data : NULL;
if (runloop->is_idle)
return;
/* Cannot allow recording when pushing duped frames. */
driver->recording_data = NULL;
/* Not 100% safe, since the library might have
* freed the memory, but no known implementations do this.
* It would be really stupid at any rate ...
*/
if (driver->retro_ctx.frame_cb)
driver->retro_ctx.frame_cb(
(video_state.frame_cache.data == RETRO_HW_FRAME_BUFFER_VALID)
? NULL : video_state.frame_cache.data,
video_state.frame_cache.width,
video_state.frame_cache.height,
video_state.frame_cache.pitch);
driver->recording_data = recording;
}
bool video_driver_cached_frame_has_valid_fb(void)
{
if (!video_state.frame_cache.data)
return false;
return (video_state.frame_cache.data == RETRO_HW_FRAME_BUFFER_VALID);
}
void video_driver_cached_frame_set_ptr(const void *data)
{
if (!data)
return;
video_state.frame_cache.data = data;
}
void video_driver_cached_frame_set(const void *data, unsigned width,
unsigned height, size_t pitch)
{
video_state.frame_cache.data = data;
video_state.frame_cache.width = width;
video_state.frame_cache.height = height;
video_state.frame_cache.pitch = pitch;
}
void video_driver_cached_frame_get(const void **data, unsigned *width,
unsigned *height, size_t *pitch)
{
if (data)
*data = video_state.frame_cache.data;
if (width)
*width = video_state.frame_cache.width;
if (height)
*height = video_state.frame_cache.height;
if (pitch)
*pitch = video_state.frame_cache.pitch;
}
void video_driver_get_size(unsigned *width, unsigned *height)
{
if (width)
*width = video_state.video_width;
if (height)
*height = video_state.video_height;
}
void video_driver_set_size_width(unsigned width)
{
video_state.video_width = width;
}
void video_driver_set_size_height(unsigned height)
{
video_state.video_height = height;
}
void video_monitor_adjust_system_rates(void)
{
float timing_skew;
const struct retro_system_timing *info = NULL;
struct retro_system_av_info *av_info =
video_viewport_get_system_av_info();
settings_t *settings = config_get_ptr();
rarch_system_info_t *system = rarch_system_info_get_ptr();
if (system)
system->force_nonblock = false;
if (av_info)
info = (const struct retro_system_timing*)&av_info->timing;
if (info->fps <= 0.0)
return;
timing_skew = fabs(1.0f - info->fps / settings->video.refresh_rate);
/* We don't want to adjust pitch too much. If we have extreme cases,
* just don't readjust at all. */
if (timing_skew <= settings->audio.max_timing_skew)
return;
RARCH_LOG("Timings deviate too much. Will not adjust. (Display = %.2f Hz, Game = %.2f Hz)\n",
settings->video.refresh_rate,
(float)info->fps);
if (info->fps <= settings->video.refresh_rate)
return;
/* We won't be able to do VSync reliably when game FPS > monitor FPS. */
system->force_nonblock = true;
RARCH_LOG("Game FPS > Monitor FPS. Cannot rely on VSync.\n");
}
/**
* video_monitor_set_refresh_rate:
* @hz : New refresh rate for monitor.
*
* Sets monitor refresh rate to new value.
**/
void video_monitor_set_refresh_rate(float hz)
{
char msg[PATH_MAX_LENGTH];
settings_t *settings = config_get_ptr();
snprintf(msg, sizeof(msg), "Setting refresh rate to: %.3f Hz.", hz);
rarch_main_msg_queue_push(msg, 1, 180, false);
RARCH_LOG("%s\n", msg);
settings->video.refresh_rate = hz;
}
/**
* video_monitor_compute_fps_statistics:
*
* Computes monitor FPS statistics.
**/
void video_monitor_compute_fps_statistics(void)
{
double avg_fps = 0.0, stddev = 0.0;
unsigned samples = 0;
settings_t *settings = config_get_ptr();
if (settings->video.threaded)
{
RARCH_LOG("Monitor FPS estimation is disabled for threaded video.\n");
return;
}
if (video_state.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 (video_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);
}
}
/**
* video_monitor_fps_statistics
* @refresh_rate : Monitor refresh rate.
* @deviation : Deviation from measured refresh rate.
* @sample_points : Amount of sampled points.
*
* Gets the monitor FPS statistics based on the current
* runtime.
*
* Returns: true (1) on success.
* false (0) if:
* a) threaded video mode is enabled
* b) less than 2 frame time samples.
* c) FPS monitor enable is off.
**/
bool video_monitor_fps_statistics(double *refresh_rate,
double *deviation, unsigned *sample_points)
{
unsigned i;
retro_time_t accum = 0, avg, accum_var = 0;
unsigned samples = 0;
settings_t *settings = config_get_ptr();
samples = min(MEASURE_FRAME_TIME_SAMPLES_COUNT,
video_state.frame_time_samples_count);
if (settings->video.threaded || (samples < 2))
return false;
/* Measure statistics on frame time (microsecs), *not* FPS. */
for (i = 0; i < samples; i++)
accum += video_state.frame_time_samples[i];
#if 0
for (i = 0; i < samples; i++)
RARCH_LOG("Interval #%u: %d usec / frame.\n",
i, (int)video_state.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 = video_state.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;
}
#ifndef TIME_TO_FPS
#define TIME_TO_FPS(last_time, new_time, frames) ((1000000.0f * (frames)) / ((new_time) - (last_time)))
#endif
#define FPS_UPDATE_INTERVAL 256
/**
* video_monitor_get_fps:
* @buf : string suitable for Window title
* @size : size of buffer.
* @buf_fps : string of raw FPS only (optional).
* @size_fps : size of raw FPS buffer.
*
* Get the amount of frames per seconds.
*
* Returns: true if framerate per seconds could be obtained,
* otherwise false.
*
**/
#ifdef _WIN32
#define U64_SIGN "%I64u"
#else
#define U64_SIGN "%llu"
#endif
bool video_monitor_get_fps(char *buf, size_t size,
char *buf_fps, size_t size_fps)
{
static float last_fps;
retro_time_t new_time;
static retro_time_t curr_time;
static retro_time_t fps_time;
uint64_t frame_count = video_driver_get_frame_count();
rarch_system_info_t *system = rarch_system_info_get_ptr();
*buf = '\0';
new_time = rarch_get_time_usec();
if (frame_count)
{
bool ret = false;
unsigned write_index = video_state.frame_time_samples_count++ &
(MEASURE_FRAME_TIME_SAMPLES_COUNT - 1);
video_state.frame_time_samples[write_index] = new_time - fps_time;
fps_time = new_time;
if ((frame_count % FPS_UPDATE_INTERVAL) == 0)
{
last_fps = TIME_TO_FPS(curr_time, new_time, FPS_UPDATE_INTERVAL);
curr_time = new_time;
snprintf(buf, size, "%s || FPS: %6.1f || Frames: " U64_SIGN,
system->title_buf, last_fps, (unsigned long long)frame_count);
ret = true;
}
if (buf_fps)
snprintf(buf_fps, size_fps, "FPS: %6.1f || Frames: " U64_SIGN,
last_fps, (unsigned long long)frame_count);
return ret;
}
curr_time = fps_time = new_time;
strlcpy(buf, system->title_buf, size);
if (buf_fps)
strlcpy(buf_fps, "N/A", size_fps);
return true;
}
void video_monitor_reset(void)
{
video_state.frame_time_samples_count = 0;
}
float video_driver_get_aspect_ratio(void)
{
return video_state.aspect_ratio;
}
void video_driver_set_aspect_ratio_value(float value)
{
video_state.aspect_ratio = value;
}
struct retro_hw_render_callback *video_driver_callback(void)
{
return &video_state.hw_render_callback;
}
void video_driver_unset_callback(void)
{
struct retro_hw_render_callback *hw_render =
video_driver_callback();
if (hw_render)
hw_render = NULL;
}
bool video_driver_frame_filter(const void *data,
unsigned width, unsigned height,
size_t pitch,
unsigned *output_width, unsigned *output_height,
unsigned *output_pitch)
{
settings_t *settings = config_get_ptr();
RARCH_PERFORMANCE_INIT(softfilter_process);
if (!video_state.filter.filter)
return false;
if (!data)
return false;
rarch_softfilter_get_output_size(video_state.filter.filter,
output_width, output_height, width, height);
*output_pitch = (*output_width) * video_state.filter.out_bpp;
RARCH_PERFORMANCE_START(softfilter_process);
rarch_softfilter_process(video_state.filter.filter,
video_state.filter.buffer, *output_pitch,
data, width, height, pitch);
RARCH_PERFORMANCE_STOP(softfilter_process);
if (settings->video.post_filter_record)
recording_dump_frame(video_state.filter.buffer,
*output_width, *output_height, *output_pitch);
return true;
}
bool video_driver_frame_filter_is_32bit(void)
{
return video_state.filter.out_rgb32;
}
bool video_driver_frame_filter_alive(void)
{
if (video_state.filter.filter)
return true;
return false;
}
rarch_softfilter_t *video_driver_frame_filter_get_ptr(void)
{
return video_state.filter.filter;
}
void *video_driver_frame_filter_get_buf_ptr(void)
{
return video_state.filter.buffer;
}
enum retro_pixel_format video_driver_get_pixel_format(void)
{
return video_state.pix_fmt;
}
void video_driver_set_pixel_format(enum retro_pixel_format fmt)
{
video_state.pix_fmt = fmt;
}
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