Fixed annoying sound when pausing/shutting down (please test for ALL backends) (couldn't do this for CoreAudio and PulseAudio too)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4676 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/AudioCommon/Src/AOSoundStream.cpp

@@ -51,7 +51,8 @@ void AOSound::SoundLoop()
 	{
         soundCriticalSection.Enter();
         m_mixer->Mix(realtimeBuffer, numBytesToRender >> 2);
-        ao_play(device, (char*)realtimeBuffer, numBytesToRender);
+		if(!g_muted)
+			ao_play(device, (char*)realtimeBuffer, numBytesToRender);
         soundCriticalSection.Leave();
 
 		if (! threadData)
@@ -105,4 +106,12 @@ AOSound::~AOSound() {
 	//   FIXME: crashes dolphin
 	//   ao_shutdown();
 }
+
+void AOSound::Mute(bool bMute) {
+	if((bMute && g_muted) || (!bMute && !g_muted))
+		return;
+
+	g_muted = bMute;
+}
+
 #endif

Source/Core/AudioCommon/Src/AOSoundStream.h

@@ -64,6 +64,8 @@ public:
 	
 	virtual void Update();
 
+	virtual void Mute(bool bMute);
+
 #else
 public:
 	AOSound(CMixer *mixer) : SoundStream(mixer) {}

Source/Core/AudioCommon/Src/AlsaSoundStream.cpp

@@ -67,7 +67,7 @@ void AlsaSound::SoundLoop()
 		// nakee: What is the optimal value?
 		int frames_to_deliver = 4096;
 		m_mixer->Mix(reinterpret_cast<short *>(mix_buffer), frames_to_deliver);
-		int rc = snd_pcm_writei(handle, mix_buffer, frames_to_deliver);
+		int rc = g_muted ? 1337 : snd_pcm_writei(handle, mix_buffer, frames_to_deliver);
 		if (rc == -EPIPE)
 		{
 			// Underrun
@@ -180,6 +180,13 @@ bool AlsaSound::AlsaInit()
 	NOTICE_LOG(AUDIO, "ALSA successfully initialized.\n");
 	return true;
 }
+
+void AlsaSound::Mute(bool bMute) {
+	if((bMute && g_muted) || (!bMute && !g_muted))
+		return;
+
+	g_muted = bMute;
+}
 
 void AlsaSound::AlsaShutdown()
 {

Source/Core/AudioCommon/Src/AlsaSoundStream.h

@@ -47,6 +47,8 @@ public:
 
 	virtual void Update();
 
+	virtual void Mute(bool bMute);
+
 private:
 	bool AlsaInit();
 	void AlsaShutdown();

Source/Core/AudioCommon/Src/DSoundStream.cpp

@@ -192,3 +192,16 @@ void DSound::Stop()
 	soundSyncEvent.Shutdown();
 	thread = NULL;
 }
+
+void DSound::Mute(bool bMute) {
+	if((bMute && g_muted) || (!bMute && !g_muted))
+		return;
+		
+	if(bMute)
+		dsBuffer->Stop();
+	else
+		dsBuffer->Play(0, 0, DSBPLAY_LOOPING);
+
+	g_muted = bMute;
+}
+

Source/Core/AudioCommon/Src/DSoundStream.h

@@ -79,6 +79,7 @@ public:
 	virtual void SetVolume(int volume);
     virtual void Stop();
 	virtual void Clear();
+	virtual void Mute(bool bMute);
     static bool isValid() { return true; }
     virtual bool usesMixer() const { return true; }
     virtual void Update();

Source/Core/AudioCommon/Src/OpenALStream.cpp

@@ -30,6 +30,8 @@ bool OpenALStream::Start()
 	ALCdevice *pDevice = NULL;
 	bool bReturn = false;
 	
+	g_uiSource = 0;
+
 	pDeviceList = new ALDeviceList();
 	if ((pDeviceList) && (pDeviceList->GetNumDevices()))
 	{
@@ -125,6 +127,9 @@ void OpenALStream::SoundLoop()
 		alSourceQueueBuffers(uiSource, 1, &uiBuffers[iLoop]);
 	}
 //*/
+
+	g_uiSource = uiSource;
+
 	alSourcePlay(uiSource);
 	err = alGetError();
 
@@ -173,5 +178,17 @@ void OpenALStream::SoundLoop()
 
 }
 
+void OpenALStream::Mute(bool bMute) {
+	if((bMute && g_muted) || (!bMute && !g_muted))
+		return;
+		
+	if(bMute && g_uiSource)
+		alSourceStop(g_uiSource);
+	else if(g_uiSource)
+		alSourcePlay(g_uiSource);
+
+	g_muted = bMute;
+}
+
 #endif //HAVE_OPENAL
 

Source/Core/AudioCommon/Src/OpenALStream.h

@@ -51,6 +51,7 @@ public:
 	virtual void SoundLoop();
 	virtual void Stop();
 	virtual void Clear();
+	virtual void Mute(bool bMute);
 	static bool isValid() { return true; }
 	virtual bool usesMixer() const { return true; }
 	virtual void Update();
@@ -63,6 +64,7 @@ private:
 	Common::Event soundSyncEvent;
 	
 	short realtimeBuffer[OAL_BUFFER_SIZE];
+	ALuint		    g_uiSource;
 #else
 public:
 	OpenALStream(CMixer *mixer, void *hWnd = NULL): SoundStream(mixer) {}

Source/Core/AudioCommon/Src/SoundStream.h

@@ -32,9 +32,10 @@ protected:
     volatile int threadData;
     bool m_logAudio;
 	WaveFileWriter g_wave_writer;
+	bool g_muted;
 
 public:   
-	SoundStream(CMixer *mixer) : m_mixer(mixer), threadData(0) {}
+	SoundStream(CMixer *mixer) : m_mixer(mixer), threadData(0), g_muted(false) {}
 	virtual ~SoundStream() { delete m_mixer;}
     
 	static  bool isValid() { return false; }  
@@ -45,6 +46,7 @@ public:
 	virtual void Stop() {}
 	virtual void Update() {}
 	virtual void Clear() {}
+	virtual void Mute(bool bMute) {}
 	virtual void StartLogAudio(const char *filename) {
 		if (! m_logAudio) {
 			m_logAudio = true;