From f135fd288889155e8d1a753c34ef0133a7f1f4bc Mon Sep 17 00:00:00 2001
From: mjbudd77 <mjbudd77@gmail.com>
Date: Sat, 8 Jan 2022 04:17:16 -0500
Subject: [PATCH] Added Qt TAS turbo seek functionality.

---
 src/drivers/Qt/TasEditor/TasEditorWindow.cpp |  8 ++++++++
 src/drivers/Qt/TasEditor/playback.cpp        | 10 ++++++++++
 src/drivers/Qt/fceuWrapper.cpp               |  8 ++++----
 src/drivers/Qt/sdl-sound.cpp                 |  3 ++-
 src/drivers/Qt/sdl-throttle.cpp              |  3 ++-
 5 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/src/drivers/Qt/TasEditor/TasEditorWindow.cpp b/src/drivers/Qt/TasEditor/TasEditorWindow.cpp
index bb6aae78..97818590 100644
--- a/src/drivers/Qt/TasEditor/TasEditorWindow.cpp
+++ b/src/drivers/Qt/TasEditor/TasEditorWindow.cpp
@@ -3178,7 +3178,15 @@ void TasEditorWindow::playbackFollowCursorCb(bool val)
 // ----------------------------------------------------------------------------------------------
 void TasEditorWindow::playbackTurboSeekCb(bool val)
 {
+	FCEU_CRITICAL_SECTION( emuLock );
+
 	taseditorConfig.turboSeek = val;
+
+	// if currently seeking, apply this option immediately
+	if (playback.getPauseFrame() >= 0)
+	{
+		turbo = taseditorConfig.turboSeek;
+	}
 }
 // ----------------------------------------------------------------------------------------------
 void TasEditorWindow::playbackAutoRestoreCb(bool val)
diff --git a/src/drivers/Qt/TasEditor/playback.cpp b/src/drivers/Qt/TasEditor/playback.cpp
index f7875ace..805466c6 100644
--- a/src/drivers/Qt/TasEditor/playback.cpp
+++ b/src/drivers/Qt/TasEditor/playback.cpp
@@ -59,6 +59,7 @@ void PLAYBACK::reset()
 	forwardFullButtonOldState = forwardFullButtonState = false;
 	emuPausedOldState = emuPausedState = true;
 	stopSeeking();
+	turbo = false;
 }
 void PLAYBACK::update()
 {
@@ -348,12 +349,19 @@ void PLAYBACK::startSeekingToFrame(int frame)
 		pauseFrame = frame + 1;
 	}
 	if (taseditorConfig->turboSeek)
+	{
+		//printf("Turbo seek on\n");
 		turbo = true;
+	}
 	unpauseEmulation();
 }
 void PLAYBACK::stopSeeking()
 {
 	pauseFrame = 0;
+	//if ( turbo )
+	//{
+	//	printf("Turbo seek off\n");
+	//}
 	turbo = false;
 	pauseEmulation();
 	setProgressbar(1, 1);
@@ -381,7 +389,9 @@ void PLAYBACK::handleForwardFrame()
 	if (pauseFrame && !emuPausedState) return;
 	jump(currFrameCounter + 1);
 	if (!pauseFrame)
+	{
 		pauseEmulation();
+	}
 	turbo = false;
 }
 void PLAYBACK::handleRewindFull(int speed)
diff --git a/src/drivers/Qt/fceuWrapper.cpp b/src/drivers/Qt/fceuWrapper.cpp
index 04c25125..83953074 100644
--- a/src/drivers/Qt/fceuWrapper.cpp
+++ b/src/drivers/Qt/fceuWrapper.cpp
@@ -1202,7 +1202,7 @@ static void DoFun(int frameskip, int periodic_saves)
 	fskipc = (fskipc + 1) % (frameskip + 1);
 #endif
 
-	if (NoWaiting) 
+	if (NoWaiting || turbo) 
 	{
 		gfx = 0;
 	}
@@ -1674,7 +1674,7 @@ bool FCEUD_ShouldDrawInputAids(void)
 	return drawInputAidsEnable;
 }
 
-void FCEUD_TurboOn	 (void) { /* TODO */ };
-void FCEUD_TurboOff   (void) { /* TODO */ };
-void FCEUD_TurboToggle(void) { /* TODO */ };
+void FCEUD_TurboOn (void) { turbo = true; };
+void FCEUD_TurboOff   (void) { turbo = false; };
+void FCEUD_TurboToggle(void) { turbo = !turbo; };
 
diff --git a/src/drivers/Qt/sdl-sound.cpp b/src/drivers/Qt/sdl-sound.cpp
index 712dc82a..a73aaf6c 100644
--- a/src/drivers/Qt/sdl-sound.cpp
+++ b/src/drivers/Qt/sdl-sound.cpp
@@ -33,6 +33,7 @@
 #include <cstdlib>
 
 extern Config *g_config;
+extern bool turbo;
 
 static volatile int *s_Buffer = 0;
 static unsigned int s_BufferSize;
@@ -311,7 +312,7 @@ WriteSound(int32 *buf,
 	int udrFlowDup  = 1;
 	static int skipCounter = 0;
 
-	if ( NoWaiting & 0x01 )
+	if ( (NoWaiting & 0x01) || turbo )
 	{	// During Turbo mode, don't bother with sound as
 		// overflowing the audio buffer can cause delays.
 		return;
diff --git a/src/drivers/Qt/sdl-throttle.cpp b/src/drivers/Qt/sdl-throttle.cpp
index 8e2417bf..f720e1ed 100644
--- a/src/drivers/Qt/sdl-throttle.cpp
+++ b/src/drivers/Qt/sdl-throttle.cpp
@@ -56,6 +56,7 @@ double g_fpsScale = Normal; // used by sdl.cpp
 bool MaxSpeed = false;
 bool useIntFrameRate = false;
 static double frmRateAdjRatio = 1.000000f; // Frame Rate Adjustment Ratio
+extern bool turbo;
 
 double getHighPrecTimeStamp(void)
 {
@@ -316,7 +317,7 @@ int highPrecSleep( double timeSeconds )
 int
 SpeedThrottle(void)
 {
-	if ( (g_fpsScale >= 32) || (NoWaiting & 0x01) )
+	if ( (g_fpsScale >= 32) || (NoWaiting & 0x01) || turbo )
 	{
 		return 0; /* Done waiting */
 	}