try to have more stable sound failure handling

src/drivers/win/OutputDS.cpp

@@ -33,6 +33,7 @@ public:
 	}
 	virtual ~DSVoice() {
 		driver->freeVoiceInternal(this,true);
+		if(ds_buf)
 			ds_buf->Release();
 	}
 	DSVoice(OAKRA_Module_OutputDS *driver, OAKRA_Format &format, IDirectSound *ds_dev, bool global) { 
@@ -66,9 +67,17 @@ public:
 		HRESULT hr = ds_dev->CreateSoundBuffer(&dsbd,&ds_buf,0);
 		cPlay = 0;
 
+		if(hr)
+		{
 			hr = ds_buf->Play(0,0,DSBPLAY_LOOPING);
 		}
 
+		//if we couldnt create the voice, then a sound card is missing.
+		//we'll use this in getVoice to catch the condition
+		if(!hr)
+			dead = true;
+	}
+	
 	//not supported
 	virtual void volFade(int start, int end, int ms) {}
 
@@ -165,13 +174,27 @@ OAKRA_Module_OutputDS::~OAKRA_Module_OutputDS() {
 
 OAKRA_Voice *OAKRA_Module_OutputDS::getVoice(OAKRA_Format &format, OAKRA_Module *source) {
 	DSVoice *dsv = (DSVoice *)getVoice(format);
+	if(dsv->dead)
+	{
+		delete dsv;
+	}
+	else
+	{
 		dsv->setSource(source);
+	}
 	return dsv;
 }
 
 OAKRA_Voice *OAKRA_Module_OutputDS::getVoice(OAKRA_Format &format) {
 	DSVoice *voice = new DSVoice(this,format,((Data *)data)->ds_dev,((Data *)data)->global);
+	if(voice->dead)
+	{
+		delete voice;
+	}
+	else
+	{
 		((Data *)data)->voices.push_back(voice);
+	}
 	return voice;
 }
 void OAKRA_Module_OutputDS::freeVoice(OAKRA_Voice *voice) {

src/drivers/win/sound.cpp

@@ -265,8 +265,10 @@ void TrashSound() {
 void DoTrashSound() {
 	if(dsout) delete dsout;
 	if(player) delete player;
+	if(player8) delete player8;
 	dsout = 0;
 	player = 0;
+	player8 = 0;
 	trashPending = false;
 }
 
@@ -293,12 +295,15 @@ void win_Throttle() {
 		player->throttle();
 }
 
+static bool killsound;
 void win_SoundInit(int bits) {
+	killsound = false;
 	dsout = new OAKRA_Module_OutputDS(); 
 	if(soundoptions&SO_GFOCUS)
 		dsout->start(0);
 	else
 		dsout->start(hAppWnd);
+	
 	dsout->beginThread();
 	OAKRA_Format fmt;
 	fmt.format = bits==8?OAKRA_U8:OAKRA_S16;
@@ -306,14 +311,22 @@ void win_SoundInit(int bits) {
 	fmt.rate = soundrate;
 	fmt.size = OAKRA_Module::calcSize(fmt);
 	OAKRA_Voice *voice = dsout->getVoice(fmt);
+	if(!voice)
+	{
+		killsound = true;
+		FCEUD_PrintError("Couldn't initialize sound buffers. Sound disabled");
+	}
 
 	player = new Player();
 	player8 = new Player8(player);
 
+	if(voice)
+	{
 		dsout->lock();
 		if(bits == 8) voice->setSource(player8);
 		else voice->setSource(player);
 		dsout->unlock();
+	}
 }
 
 
@@ -334,6 +347,8 @@ int InitSound() {
 	}
 
 	win_SoundInit(bits);
+	if(killsound)
+		TrashSound();
 
 	FCEUI_Sound(soundrate);
 	return 1;
@@ -354,6 +369,7 @@ void win_SoundWriteData(int32 *buffer, int count) {
 	short *sbuf = (short *)tempbuf;
 	for(int i=0;i<count;i++)
 		sbuf[i] = buffer[i];
+	if(player)
 		player->receive(count*2,tempbuf);
 }