From aa0923a3a86686ca4a8bc6dff73fce7a02fe56f8 Mon Sep 17 00:00:00 2001
From: punkrockguy318 <punkrockguy318@users.sf.net>
Date: Thu, 14 Aug 2008 16:49:18 +0000
Subject: [PATCH] frame advance improvements in sdl

---
 src/drivers/sdl/input.cpp     | 21 ++++++++++++++++-----
 src/drivers/sdl/sdl-sound.cpp | 22 ++++++++++++----------
 2 files changed, 28 insertions(+), 15 deletions(-)

diff --git a/src/drivers/sdl/input.cpp b/src/drivers/sdl/input.cpp
index 0ad905aa..74e82be7 100644
--- a/src/drivers/sdl/input.cpp
+++ b/src/drivers/sdl/input.cpp
@@ -334,12 +334,23 @@ KeyboardCommands()
     }
     
     g_config->getOption("SDL.Hotkeys.FrameAdvance", &key);
-    if(_keyonly(key)) {
-        // 8-10-08 - this freezes fceux for me - punkrockguy318
-        FCEUI_FrameAdvance();
+    static bool frameAdvancing = false;
+    if(g_keyState[key])
+    {
+        if(frameAdvancing == false)
+        {
+            FCEUI_FrameAdvance();
+            frameAdvancing = true;
+        }
+    }
+    else
+    {
+        if(frameAdvancing)
+        {
+            FCEUI_FrameAdvanceEnd();
+            frameAdvancing = false;
+        }
     }
-    
-
     
     g_config->getOption("SDL.Hotkeys.Reset", &key);
     if(_keyonly(key)) {
diff --git a/src/drivers/sdl/sdl-sound.cpp b/src/drivers/sdl/sdl-sound.cpp
index c6653e87..effad424 100644
--- a/src/drivers/sdl/sdl-sound.cpp
+++ b/src/drivers/sdl/sdl-sound.cpp
@@ -149,17 +149,19 @@ void
 WriteSound(int32 *buf,
            int Count)
 {
-    while(Count) {
-        while(s_BufferIn == s_BufferSize) {
-            SDL_Delay(1);
-        }
+    extern int EmulationPaused;
+    if (EmulationPaused == 0)
+        while(Count) {
+            while(s_BufferIn == s_BufferSize) {
+                SDL_Delay(1);
+            }
 
-        s_Buffer[s_BufferWrite] = *buf;
-        Count--;
-        s_BufferWrite = (s_BufferWrite + 1) % s_BufferSize;
-        s_BufferIn++;
-        buf++;
-    }
+            s_Buffer[s_BufferWrite] = *buf;
+            Count--;
+            s_BufferWrite = (s_BufferWrite + 1) % s_BufferSize;
+            s_BufferIn++;
+            buf++;
+        }
 }
 
 /**