Merge pull request libretro#119 from Ferk/framerate

Support RETRO_ENVIRONMENT_GET_TARGET_REFRESH_RATE

Author: inactive123

libretro/libretro.c

@@ -244,54 +244,60 @@ void retro_get_system_av_info(struct retro_system_av_info *info)
 {
   switch(movement_smooth)
   {
-    case 0:
+    case 1:
       info->timing.fps = 35.0;
       break;
-    case 1:
+    case 2:
       info->timing.fps = 40.0;
       break;
-    case 2:
+    case 3:
       info->timing.fps = 50.0;
       break;
-    case 3:
+    case 4:
       info->timing.fps = 60.0;
       break;
-    case 4:
+    case 5:
       info->timing.fps = 70.0;
       break;
-    case 5:
+    case 6:
       info->timing.fps = 72.0;
       break;
-    case 6:
+    case 7:
       info->timing.fps = 75.0;
       break;
-    case 7:
+    case 8:
       info->timing.fps = 90.0;
       break;
-    case 8:
+    case 9:
       info->timing.fps = 100.0;
       break;
-    case 9:
+    case 10:
       info->timing.fps = 119.0;
       break;
-    case 10:
+    case 11:
       info->timing.fps = 120.0;
       break;
-    case 11:
+    case 12:
       info->timing.fps = 140.0;
       break;
-    case 12:
+    case 13:
       info->timing.fps = 144.0;
       break;
-    case 13:
+    case 14:
       info->timing.fps = 240.0;
       break;
-    case 14:
+    case 15:
       info->timing.fps = 244.0;
       break;
+    case 0: // Auto
     default:
-      info->timing.fps = TICRATE;
+    {
+      float target_framerate = 0.0f;
+      if (!environ_cb(RETRO_ENVIRONMENT_GET_TARGET_REFRESH_RATE, &target_framerate))
+        target_framerate = 60.0f;
+      info->timing.fps = target_framerate;
       break;
+    }
   }
   info->timing.sample_rate = 44100.0;
   info->geometry.base_width = SCREENWIDTH;
@@ -1413,6 +1419,9 @@ void R_InitInterpolation(void)
     tic_vars.fps = info.timing.fps;
     tic_vars.frac_step = FRACUNIT * TICRATE / tic_vars.fps;
     tic_vars.sample_step = info.timing.sample_rate / tic_vars.fps;
+
+    if (log_cb)
+      log_cb(RETRO_LOG_INFO, "[libretro]: Framerate set to %.2f FPS\n", info.timing.fps);
   }
   tic_vars.frac = FRACUNIT;
 }

src/m_menu.c

@@ -2837,7 +2837,7 @@ enum {
 #define G_YA3 (G_YA2 + 16)
 #define GF_X 76
 
-static const char *framerates[] = {"35fps", "40fps", "50fps", "60fps", "70fps", "72fps", "75fps", "90fps", "100fps", "119fps", "120fps", "140fps", "144fps", "240fps", "244fps", NULL};
+static const char *framerates[] = {"Auto", "35fps", "40fps", "50fps", "60fps", "70fps", "72fps", "75fps", "90fps", "100fps", "119fps", "120fps", "140fps", "144fps", "240fps", "244fps", NULL};
 static const char *gamma_lvls[] = {"OFF", "Lv. 1", "Lv. 2", "Lv. 3", "Lv. 4", NULL};
 static const char *mus_external_opts[] = {"Never", "Always", "Only IWAD", NULL};
 

src/m_misc.c

@@ -295,7 +295,7 @@ default_t defaults[] =
    def_int,ss_none, NULL, NULL},
   {"usegamma",{&usegamma, NULL},{0, NULL},0,4, //jff 3/6/98 fix erroneous upper limit in range
    def_int,ss_gen, NULL, NULL}, // gamma correction level // killough 1/18/98
-  {"uncapped_framerate", {&movement_smooth, NULL},  {3, NULL},0,14,
+  {"uncapped_framerate", {&movement_smooth, NULL},  {0, NULL},0,15,
    def_int,ss_gen, NULL, NULL},
   {"filter_wall",{(int*)&drawvars.filterwall, NULL},{RDRAW_FILTER_POINT, NULL},
    RDRAW_FILTER_POINT, RDRAW_FILTER_ROUNDED, def_int,ss_gen, NULL, NULL},