RetroArch/gfx/gfx_common.c
2011-11-30 17:34:18 +01:00

115 lines
2.9 KiB
C

/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
* Copyright (C) 2010-2011 - Hans-Kristian Arntzen
*
* Some code herein may be based on code found in BSNES.
*
* SSNES 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.
*
* SSNES 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 SSNES.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "gfx_common.h"
#include "../general.h"
#include <sys/time.h>
static float tv_to_fps(const struct timeval *tv, const struct timeval *new_tv, int frames)
{
float time = new_tv->tv_sec - tv->tv_sec + (new_tv->tv_usec - tv->tv_usec)/1000000.0;
return frames/time;
}
static unsigned gl_frames = 0;
void gfx_window_title_reset(void)
{
gl_frames = 0;
}
bool gfx_window_title(char *buf, size_t size)
{
static struct timeval tv;
struct timeval new_tv;
bool ret = false;
if (gl_frames == 0)
{
gettimeofday(&tv, NULL);
snprintf(buf, size, "%s", g_extern.title_buf);
ret = true;
}
else if ((gl_frames % 180) == 0)
{
gettimeofday(&new_tv, NULL);
struct timeval tmp_tv = tv;
tv = new_tv;
float fps = tv_to_fps(&tmp_tv, &new_tv, 180);
snprintf(buf, size, "%s || FPS: %6.1f || Frames: %d", g_extern.title_buf, fps, gl_frames);
ret = true;
}
gl_frames++;
return ret;
}
#ifdef _WIN32
#include <windows.h>
#include "dynamic.h"
// We only load this library once, so we let it be unloaded at application shutdown,
// since unloading it early seems to cause issues on some systems.
static dylib_t dwmlib = NULL;
static void gfx_dwm_shutdown(void)
{
if (dwmlib)
dylib_close(dwmlib);
}
void gfx_set_dwm(void)
{
static bool inited = false;
if (inited)
return;
inited = true;
dwmlib = dylib_load("dwmapi.dll");
if (!dwmlib)
{
SSNES_LOG("Did not find dwmapi.dll.\n");
return;
}
atexit(gfx_dwm_shutdown);
HRESULT (WINAPI *mmcss)(BOOL) = (HRESULT (WINAPI*)(BOOL))dylib_proc(dwmlib, "DwmEnableMMCSS");
if (mmcss)
{
SSNES_LOG("Setting multimedia scheduling for DWM.\n");
mmcss(TRUE);
}
if (!g_settings.video.disable_composition)
return;
HRESULT (WINAPI *composition_enable)(UINT) = (HRESULT (WINAPI*)(UINT))dylib_proc(dwmlib, "DwmEnableComposition");
if (!composition_enable)
{
SSNES_ERR("Did not find DwmEnableComposition ...\n");
return;
}
HRESULT ret = composition_enable(0);
if (FAILED(ret))
SSNES_ERR("Failed to set composition state ...\n");
}
#endif