From 24094ecdf04cdeda17711141a27bfa0bc30de467 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Sun, 19 Oct 2014 00:50:23 -0700
Subject: [PATCH] Make audo/video sync adjustable externally

---
 src/platform/qt/GameController.cpp | 20 ++++++++++++++++++--
 src/platform/qt/GameController.h   |  8 ++++++++
 src/platform/qt/Window.cpp         | 14 ++++++++++++++
 3 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/src/platform/qt/GameController.cpp b/src/platform/qt/GameController.cpp
index 4a5b518b2..c79afb891 100644
--- a/src/platform/qt/GameController.cpp
+++ b/src/platform/qt/GameController.cpp
@@ -22,6 +22,8 @@ GameController::GameController(QObject* parent)
 	, m_gameOpen(false)
 	, m_audioThread(new QThread(this))
 	, m_audioProcessor(new AudioProcessor)
+	, m_videoSync(VIDEO_SYNC)
+	, m_audioSync(AUDIO_SYNC)
 {
 	m_renderer = new GBAVideoSoftwareRenderer;
 	GBAVideoSoftwareRendererCreate(m_renderer);
@@ -115,8 +117,8 @@ void GameController::setDebugger(ARMDebugger* debugger) {
 
 void GameController::loadGame(const QString& path, bool dirmode) {
 	closeGame();
-	m_threadContext.sync.videoFrameWait = 0;
-	m_threadContext.sync.audioWait = 1;
+	m_threadContext.sync.videoFrameWait = m_videoSync;
+	m_threadContext.sync.audioWait = m_audioSync;
 	if (!dirmode) {
 		QFile file(path);
 		if (!file.open(QIODevice::ReadOnly)) {
@@ -234,6 +236,20 @@ void GameController::saveState(int slot) {
 	GBAThreadContinue(&m_threadContext);
 }
 
+void GameController::setVideoSync(bool set) {
+	m_videoSync = set;
+	GBAThreadInterrupt(&m_threadContext);
+	m_threadContext.sync.videoFrameWait = set;
+	GBAThreadContinue(&m_threadContext);
+}
+
+void GameController::setAudioSync(bool set) {
+	m_audioSync = set;
+	GBAThreadInterrupt(&m_threadContext);
+	m_threadContext.sync.audioWait = set;
+	GBAThreadContinue(&m_threadContext);
+}
+
 void GameController::updateKeys() {
 	int activeKeys = m_activeKeys;
 #ifdef BUILD_SDL
diff --git a/src/platform/qt/GameController.h b/src/platform/qt/GameController.h
index 0405354d4..1371e3a6a 100644
--- a/src/platform/qt/GameController.h
+++ b/src/platform/qt/GameController.h
@@ -27,6 +27,9 @@ class GameController : public QObject {
 Q_OBJECT
 
 public:
+	static const bool VIDEO_SYNC = false;
+	static const bool AUDIO_SYNC = true;
+
 	GameController(QObject* parent = nullptr);
 	~GameController();
 
@@ -64,6 +67,8 @@ public slots:
 	void setFPSTarget(float fps);
 	void loadState(int slot);
 	void saveState(int slot);
+	void setVideoSync(bool);
+	void setAudioSync(bool);
 
 #ifdef BUILD_SDL
 private slots:
@@ -90,6 +95,9 @@ private:
 
 	QMutex m_pauseMutex;
 	bool m_pauseAfterFrame;
+
+	bool m_videoSync;
+	bool m_audioSync;
 };
 
 }
diff --git a/src/platform/qt/Window.cpp b/src/platform/qt/Window.cpp
index 9c7813347..3d910e3f3 100644
--- a/src/platform/qt/Window.cpp
+++ b/src/platform/qt/Window.cpp
@@ -357,6 +357,20 @@ void Window::setupMenu(QMenuBar* menubar) {
 	connect(setTarget, &QAction::triggered, [this]() { emit fpsTargetChanged(240); });
 	target->addAction(setTarget);
 
+	emulationMenu->addSeparator();
+
+	QAction* videoSync = new QAction(tr("Sync to &video"), emulationMenu);
+	videoSync->setCheckable(true);
+	videoSync->setChecked(GameController::VIDEO_SYNC);
+	connect(videoSync, SIGNAL(triggered(bool)), m_controller, SLOT(setVideoSync(bool)));
+	emulationMenu->addAction(videoSync);
+
+	QAction* audioSync = new QAction(tr("Sync to &audio"), emulationMenu);
+	audioSync->setCheckable(true);
+	audioSync->setChecked(GameController::AUDIO_SYNC);
+	connect(audioSync, SIGNAL(triggered(bool)), m_controller, SLOT(setAudioSync(bool)));
+	emulationMenu->addAction(audioSync);
+
 	QMenu* videoMenu = menubar->addMenu(tr("&Video"));
 	QMenu* frameMenu = videoMenu->addMenu(tr("Frame &size"));
 	QAction* setSize = new QAction(tr("1x"), videoMenu);