Rename gfx_get_fps to video_monitor_get_fps

apple/common/apple_gfx_context.c.inl

@@ -4,6 +4,7 @@
 #endif
 
 #include "../../gfx/gfx_common.h"
+#include "../../gfx/video_monitor.h"
 #include "../../gfx/video_context_driver.h"
 #include "../../gfx/gl_common.h"
 
@@ -249,8 +250,9 @@ static void apple_gfx_ctx_update_window_title(void *data)
 {
 #ifdef OSX
    static char buf[128], buf_fps[128];
-   bool got_text = gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
-   static const char* const text = buf; // < Can't access buf directly in the block
+   bool got_text = video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   static const char* const text = buf; /* < Can't access buffer directly in the block */
    if (got_text)
        [[g_view window] setTitle:[NSString stringWithCString:text encoding:NSUTF8StringEncoding]];
     if (g_settings.fps_show)

gfx/d3d/d3d.cpp

@@ -548,6 +548,7 @@ static bool d3d_construct(d3d_video_t *d3d,
    d3d->screen_height = info->fullscreen ? full_y : info->height;
 
 #if defined(HAVE_WINDOW) && !defined(_XBOX)
+   char buffer[128];
    unsigned win_width  = d3d->screen_width;
    unsigned win_height = d3d->screen_height;
    RECT rect = {0};
@@ -561,8 +562,7 @@ static bool d3d_construct(d3d_video_t *d3d,
       win_height = rect.bottom - rect.top;
    }
 
-   char buffer[128];
-   gfx_get_fps(buffer, sizeof(buffer), NULL, 0);
+   video_monitor_get_fps(buffer, sizeof(buffer), NULL, 0);
    std::string title = buffer;
    title += " || Direct3D";
 

gfx/drivers/exynos_gfx.c

@@ -33,6 +33,7 @@
 #include "../../general.h"
 #include "../../retroarch.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../font_renderer_driver.h"
 
 /* TODO: Honor these properties: vsync, menu rotation, menu alpha, aspect ratio change */
@@ -1284,10 +1285,11 @@ static bool exynos_gfx_frame(void *data, const void *frame, unsigned width,
       goto fail;
   }
 
-  if (g_settings.fps_show) {
+  if (g_settings.fps_show)
+  {
     char buffer[128], buffer_fps[128];
-
-    gfx_get_fps(buffer, sizeof(buffer), g_settings.fps_show ? buffer_fps : NULL, sizeof(buffer_fps));
+    video_monitor_get_fps(buffer, sizeof(buffer),
+          g_settings.fps_show ? buffer_fps : NULL, sizeof(buffer_fps));
     msg_queue_push(g_extern.msg_queue, buffer_fps, 1, 1);
   }
 

gfx/drivers/gx_gfx.c

@@ -20,6 +20,7 @@
 #include "../drivers_font_renderer/bitmap.h"
 #include "../../menu/menu.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #ifdef HW_RVL
 #include "../../wii/mem2_manager.h"
@@ -903,7 +904,8 @@ static bool gx_frame(void *data, const void *frame,
       unsigned width, unsigned height, unsigned pitch,
       const char *msg)
 {
-
+   char fps_txt[128], fps_text_buf[128];
+   bool fps_draw = g_settings.fps_show;
    gx_video_t *gx = (gx_video_t*)data;
    struct __gx_regdef *__gx = (struct __gx_regdef*)__gxregs;
    u8 clear_efb = GX_FALSE;
@@ -984,9 +986,7 @@ static bool gx_frame(void *data, const void *frame,
 
    GX_DrawDone();
 
-   char fps_txt[128], fps_text_buf[128];
-   bool fps_draw = g_settings.fps_show;
-   gfx_get_fps(fps_txt, sizeof(fps_txt),
+   video_monitor_get_fps(fps_txt, sizeof(fps_txt),
          fps_draw ? fps_text_buf : NULL, sizeof(fps_text_buf));
 
    if (fps_draw)

gfx/drivers/omap_gfx.c

@@ -21,6 +21,7 @@
 #include "../../retroarch.h"
 #include <gfx/scaler/scaler.h>
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../video_context_driver.h"
 #include "../font_renderer_driver.h"
 

gfx/drivers/psp1_gfx.c

@@ -25,6 +25,7 @@
 #include "../../general.h"
 #include "../../driver.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #ifndef SCEGU_SCR_WIDTH
 #define SCEGU_SCR_WIDTH 480
@@ -491,15 +492,16 @@ static bool psp_frame(void *data, const void *frame,
 
    pspDebugScreenSetXY(0,0);
 
+   video_monitor_get_fps(fps_txt, sizeof(fps_txt),
+         g_settings.fps_show ? fps_text_buf : NULL,
+         g_settings.fps_show ? sizeof(fps_text_buf) : 0);
+
    if(g_settings.fps_show)
    {
-      gfx_get_fps(fps_txt, sizeof(fps_txt), fps_text_buf, sizeof(fps_text_buf));
       pspDebugScreenSetXY(68 - strlen(fps_text_buf) - 1,0);
       pspDebugScreenPuts(fps_text_buf);
       pspDebugScreenSetXY(0,1);
    }
-   else
-      gfx_get_fps(fps_txt, sizeof(fps_txt), NULL, 0);
 
    if (msg)
       pspDebugScreenPuts(msg);

gfx/drivers/sdl2_gfx.c

@@ -21,8 +21,10 @@
 #include <string.h>
 #include "../../general.h"
 #include "../../retroarch.h"
+#include "../../performance.h"
 #include <gfx/scaler/scaler.h>
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../video_context_driver.h"
 #include "../font_renderer_driver.h"
 
@@ -470,6 +472,7 @@ static void check_window(sdl2_video_t *vid)
 static bool sdl2_gfx_frame(void *data, const void *frame, unsigned width,
                            unsigned height, unsigned pitch, const char *msg)
 {
+   char buf[128];
    sdl2_video_t *vid = (sdl2_video_t*)data;
 
    if (vid->should_resize)
@@ -503,8 +506,7 @@ static bool sdl2_gfx_frame(void *data, const void *frame, unsigned width,
 
    SDL_RenderPresent(vid->renderer);
 
-   char buf[128];
-   if (gfx_get_fps(buf, sizeof(buf), NULL, 0))
+   if (video_monitor_get_fps(buf, sizeof(buf), NULL, 0))
       SDL_SetWindowTitle(vid->window, buf);
 
    g_extern.frame_count++;

gfx/drivers/sdl_gfx.c

@@ -21,6 +21,7 @@
 #include "../../general.h"
 #include <gfx/scaler/scaler.h>
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../video_context_driver.h"
 #include "../font_renderer_driver.h"
 
@@ -335,11 +336,12 @@ static void check_window(sdl_video_t *vid)
 static bool sdl_gfx_frame(void *data, const void *frame, unsigned width,
                           unsigned height, unsigned pitch, const char *msg)
 {
+   char buf[128];
+   sdl_video_t *vid = (sdl_video_t*)data;
+
    if (!frame)
       return true;
 
-   sdl_video_t *vid = (sdl_video_t*)data;
-
    sdl_update_scaler(vid->screen, &vid->scaler, vid->scaler.in_fmt, width, height, pitch);
 
    if (SDL_MUSTLOCK(vid->screen))
@@ -359,8 +361,7 @@ static bool sdl_gfx_frame(void *data, const void *frame, unsigned width,
    if (SDL_MUSTLOCK(vid->screen))
       SDL_UnlockSurface(vid->screen);
 
-   char buf[128];
-   if (gfx_get_fps(buf, sizeof(buf), NULL, 0))
+   if (video_monitor_get_fps(buf, sizeof(buf), NULL, 0))
       SDL_WM_SetCaption(buf, NULL);
 
    SDL_Flip(vid->screen);

gfx/drivers/xvideo.c

@@ -20,6 +20,7 @@
 #include <signal.h>
 #include <math.h>
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../font_renderer_driver.h"
 
 #include "../drivers_context/x11_common.h"
@@ -500,7 +501,7 @@ static void *xv_init(const video_info_t *video,
 
    XMapWindow(xv->display, xv->window);
 
-   if (gfx_get_fps(buf, sizeof(buf), NULL, 0))
+   if (video_monitor_get_fps(buf, sizeof(buf), NULL, 0))
       XStoreName(xv->display, xv->window, buf);
 
    x11_set_window_attr(xv->display, xv->window);
@@ -771,7 +772,7 @@ static bool xv_frame(void *data, const void *frame, unsigned width,
          true);
    XSync(xv->display, False);
 
-   if (gfx_get_fps(buf, sizeof(buf), NULL, 0))
+   if (video_monitor_get_fps(buf, sizeof(buf), NULL, 0))
       XStoreName(xv->display, xv->window, buf);
 
    g_extern.frame_count++;

gfx/drivers_context/androidegl_ctx.c

@@ -17,6 +17,7 @@
 #include "../../driver.h"
 #include "../../general.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../gl_common.h"
 
 #include <EGL/egl.h>
@@ -276,7 +277,8 @@ static void android_gfx_ctx_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/bbqnx_ctx.c

@@ -17,6 +17,7 @@
 #include "../../driver.h"
 #include "../../general.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../gl_common.h"
 
 #include <EGL/egl.h>
@@ -359,7 +360,8 @@ static void gfx_ctx_qnx_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/d3d_ctx.cpp

@@ -19,6 +19,7 @@
 #include "win32_common.h"
 
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #ifdef _MSC_VER
 #ifndef _XBOX
@@ -127,7 +128,8 @@ static void gfx_ctx_d3d_update_title(void *data)
    char buf[128], buffer_fps[128];
    bool fps_draw = g_settings.fps_show || g_settings.fps_monitor_enable;
 
-   if (gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buffer_fps : NULL, sizeof(buffer_fps)))
+   if (video_monitor_get_fps(buf, sizeof(buf),
+            g_settings.fps_show ? buffer_fps : NULL, sizeof(buffer_fps)))
    {
 #ifndef _XBOX
       SetWindowText(d3d->hWnd, buf);

gfx/drivers_context/drm_egl_ctx.c

@@ -21,6 +21,7 @@
 #include "../../driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include <file/dir_list.h>
 
 #ifdef HAVE_CONFIG_H
@@ -271,7 +272,8 @@ static void gfx_ctx_drm_egl_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/emscriptenegl_ctx.c

@@ -18,6 +18,7 @@
 #include "../video_context_driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #ifdef HAVE_CONFIG_H
 #include "../../config.h"
@@ -93,7 +94,8 @@ static void gfx_ctx_emscripten_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/gfx_null_ctx.c

@@ -19,6 +19,7 @@
 #include "../../driver.h"
 #include "../video_context_driver.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 static void gfx_ctx_null_swap_interval(void *data, unsigned interval)
 {

gfx/drivers_context/glx_ctx.c

@@ -17,6 +17,7 @@
 #include "../../driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "x11_common.h"
 
 #include <signal.h>
@@ -197,7 +198,8 @@ static void gfx_ctx_glx_update_window_title(void *data)
 
    glx = (gfx_ctx_glx_data_t*)driver.video_context_data;
 
-   if (gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
+   if (video_monitor_get_fps(buf, sizeof(buf),
+            g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
       XStoreName(glx->g_dpy, glx->g_win, buf);
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);

gfx/drivers_context/mali_fbdev_ctx.c

@@ -16,6 +16,7 @@
 #include "../../driver.h"
 #include "../../general.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../gl_common.h"
 
 #include <EGL/egl.h>
@@ -205,7 +206,8 @@ static void gfx_ctx_mali_fbdev_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/ps3_ctx.c

@@ -24,6 +24,7 @@
 #endif
 
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #ifndef __PSL1GHT__
 #include <sys/spu_initialize.h>
@@ -214,7 +215,8 @@ static void gfx_ctx_ps3_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/sdl_gl_ctx.c

@@ -17,6 +17,7 @@
 #include "../../driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #include "SDL.h"
 
@@ -281,7 +282,8 @@ static void sdl_ctx_update_window_title(void *data)
    if (!sdl)
       return;
 
-   if (gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
+   if (video_monitor_get_fps(buf, sizeof(buf),
+            g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
    {
 #ifdef HAVE_SDL2
       SDL_SetWindowTitle(sdl->g_win, buf);

gfx/drivers_context/vc_egl_ctx.c

@@ -18,6 +18,7 @@
 #include "../video_context_driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 
 #ifdef HAVE_CONFIG_H
 #include "../../config.h"
@@ -125,7 +126,8 @@ static void gfx_ctx_vc_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/vivante_fbdev_ctx.c

@@ -17,6 +17,7 @@
 #include "../../driver.h"
 #include "../../general.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../gl_common.h"
 
 #include <EGL/egl.h>
@@ -194,7 +195,8 @@ static void gfx_ctx_vivante_update_window_title(void *data)
    if (!fps_draw)
       return;
 
-   gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
+   video_monitor_get_fps(buf, sizeof(buf),
+         g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps));
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
 }

gfx/drivers_context/wayland_ctx.c

@@ -17,6 +17,7 @@
 #include "../../driver.h"
 #include "../../general.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "../gl_common.h"
 
 #include <wayland-client.h>
@@ -337,7 +338,7 @@ static void gfx_ctx_wl_update_window_title(void *data)
 
    (void)data;
 
-   if (gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? 
+   if (video_monitor_get_fps(buf, sizeof(buf), g_settings.fps_show ? 
             buf_fps : NULL, sizeof(buf_fps)))
       wl_shell_surface_set_title(wl->g_shell_surf, buf);
 

gfx/drivers_context/wgl_ctx.c

@@ -25,6 +25,7 @@
 #include "../video_context_driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "win32_common.h"
 #include <windows.h>
 #include <commdlg.h>
@@ -344,7 +345,8 @@ static void gfx_ctx_wgl_update_window_title(void *data)
 
    (void)data;
 
-   if (gfx_get_fps(buf, sizeof(buf), g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
+   if (video_monitor_get_fps(buf, sizeof(buf),
+            g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
       SetWindowText(g_hwnd, buf);
    if (g_settings.fps_show)
       msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);

gfx/drivers_context/xegl_ctx.c

@@ -21,6 +21,7 @@
 #include "../../driver.h"
 #include "../gl_common.h"
 #include "../gfx_common.h"
+#include "../video_monitor.h"
 #include "x11_common.h"
 
 #include <signal.h>
@@ -215,7 +216,7 @@ static void gfx_ctx_xegl_update_window_title(void *data)
 
    (void)data;
 
-   if (gfx_get_fps(buf, sizeof(buf),
+   if (video_monitor_get_fps(buf, sizeof(buf),
             g_settings.fps_show ? buf_fps : NULL, sizeof(buf_fps)))
       XStoreName(g_dpy, g_win, buf);
    if (g_settings.fps_show)

gfx/gfx_common.c

@@ -16,71 +16,6 @@
 
 #include "gfx_common.h"
 #include "../general.h"
-#include "../performance.h"
-
-#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
-
-/**
- * gfx_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.
- *
- **/
-bool gfx_get_fps(char *buf, size_t size, char *buf_fps, size_t size_fps)
-{
-   retro_time_t        new_time;
-   static retro_time_t curr_time;
-   static retro_time_t fps_time;
-   static float last_fps;
-   *buf = '\0';
-
-   new_time = rarch_get_time_usec();
-
-   if (g_extern.frame_count)
-   {
-      bool ret = false;
-      unsigned write_index = 
-         g_extern.measure_data.frame_time_samples_count++ &
-         (MEASURE_FRAME_TIME_SAMPLES_COUNT - 1);
-      g_extern.measure_data.frame_time_samples[write_index] = 
-         new_time - fps_time;
-      fps_time = new_time;
-
-      if ((g_extern.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: %u",
-               g_extern.title_buf, last_fps, g_extern.frame_count);
-         ret = true;
-      }
-
-      if (buf_fps)
-         snprintf(buf_fps, size_fps, "FPS: %6.1f || Frames: %u",
-               last_fps, g_extern.frame_count);
-
-      return ret;
-   }
-
-   curr_time = fps_time = new_time;
-   strlcpy(buf, g_extern.title_buf, size);
-   if (buf_fps)
-      strlcpy(buf_fps, "N/A", size_fps);
-
-   return true;
-}
 
 #if defined(_WIN32) && !defined(_XBOX)
 #include <windows.h>
@@ -339,4 +274,3 @@ void gfx_set_config_viewport(void)
       aspectratio_lut[ASPECT_RATIO_CONFIG].value = 
          g_settings.video.aspect_ratio;
 }
-

gfx/gfx_common.h

@@ -25,28 +25,11 @@ extern "C" {
 #include <stdint.h>
 #include "../general.h"
 #include <boolean.h>
-#include "../performance.h"
 
 #ifdef HAVE_CONFIG_H
 #include "../config.h"
 #endif
 
-/**
- * gfx_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.
- *
- **/
-bool gfx_get_fps(char *buf, size_t size,
-      char *buf_fps, size_t size_fps);
-
 #ifdef _WIN32
 void gfx_set_dwm(void);
 #endif

gfx/video_monitor.c

@@ -17,6 +17,7 @@
 #include "video_monitor.h"
 #include "../general.h"
 #include "../retroarch.h"
+#include "../performance.h"
 
 void video_monitor_adjust_system_rates(void)
 {
@@ -148,3 +149,68 @@ bool video_monitor_fps_statistics(double *refresh_rate,
 
    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.
+ *
+ **/
+bool video_monitor_get_fps(char *buf, size_t size,
+      char *buf_fps, size_t size_fps)
+{
+   retro_time_t        new_time;
+   static retro_time_t curr_time;
+   static retro_time_t fps_time;
+   static float last_fps;
+   *buf = '\0';
+
+   new_time = rarch_get_time_usec();
+
+   if (g_extern.frame_count)
+   {
+      bool ret = false;
+      unsigned write_index = 
+         g_extern.measure_data.frame_time_samples_count++ &
+         (MEASURE_FRAME_TIME_SAMPLES_COUNT - 1);
+      g_extern.measure_data.frame_time_samples[write_index] = 
+         new_time - fps_time;
+      fps_time = new_time;
+
+      if ((g_extern.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: %u",
+               g_extern.title_buf, last_fps, g_extern.frame_count);
+         ret = true;
+      }
+
+      if (buf_fps)
+         snprintf(buf_fps, size_fps, "FPS: %6.1f || Frames: %u",
+               last_fps, g_extern.frame_count);
+
+      return ret;
+   }
+
+   curr_time = fps_time = new_time;
+   strlcpy(buf, g_extern.title_buf, size);
+   if (buf_fps)
+      strlcpy(buf_fps, "N/A", size_fps);
+
+   return true;
+}

gfx/video_monitor.h

@@ -18,6 +18,7 @@
 #define __VIDEO_MONITOR_H
 
 #include <boolean.h>
+#include <stddef.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -58,6 +59,22 @@ void video_monitor_compute_fps_statistics(void);
 bool video_monitor_fps_statistics(double *refresh_rate,
       double *deviation, unsigned *sample_points);
 
+/**
+ * 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.
+ *
+ **/
+bool video_monitor_get_fps(char *buf, size_t size,
+      char *buf_fps, size_t size_fps);
+
 #ifdef __cplusplus
 }
 #endif

menu/menu_entries_cbs.c

@@ -26,6 +26,7 @@
 #include "../config.def.h"
 #include "../cheats.h"
 #include "../retroarch.h"
+#include "../performance.h"
 
 #ifdef GEKKO
 enum

settings_data.c

@@ -27,6 +27,7 @@
 #include "file_ext.h"
 #include "settings.h"
 #include "retroarch.h"
+#include "performance.h"
 
 #if defined(__CELLOS_LV2__)
 #include <sdk_version.h>