frame advance improvements in sdl

src/drivers/sdl/input.cpp

@@ -334,12 +334,23 @@ KeyboardCommands()
     }
     
     g_config->getOption("SDL.Hotkeys.FrameAdvance", &key);
-    if(_keyonly(key)) {
+    static bool frameAdvancing = false;
-        // 8-10-08 - this freezes fceux for me - punkrockguy318
+    if(g_keyState[key])
-        FCEUI_FrameAdvance();
+    {
+        if(frameAdvancing == false)
+        {
+            FCEUI_FrameAdvance();
+            frameAdvancing = true;
+        }
+    }
+    else
+    {
+        if(frameAdvancing)
+        {
+            FCEUI_FrameAdvanceEnd();
+            frameAdvancing = false;
+        }
     }
-    
-
     
     g_config->getOption("SDL.Hotkeys.Reset", &key);
     if(_keyonly(key)) {

src/drivers/sdl/sdl-sound.cpp

@@ -149,17 +149,19 @@ void
 WriteSound(int32 *buf,
            int Count)
 {
-    while(Count) {
+    extern int EmulationPaused;
-        while(s_BufferIn == s_BufferSize) {
+    if (EmulationPaused == 0)
-            SDL_Delay(1);
+        while(Count) {
-        }
+            while(s_BufferIn == s_BufferSize) {
+                SDL_Delay(1);
+            }
 
-        s_Buffer[s_BufferWrite] = *buf;
+            s_Buffer[s_BufferWrite] = *buf;
-        Count--;
+            Count--;
-        s_BufferWrite = (s_BufferWrite + 1) % s_BufferSize;
+            s_BufferWrite = (s_BufferWrite + 1) % s_BufferSize;
-        s_BufferIn++;
+            s_BufferIn++;
-        buf++;
+            buf++;
-    }
+        }
 }
 
 /**