Add use of DirectSound primary buffer in win port

zsnes/src/win/winlink.cpp

@@ -41,6 +41,7 @@ DWORD SoundBufferSize=1024*18;
 DWORD FirstSound=1;
 
 int SoundEnabled=1;
+int UsePrimaryBuffer=0;
 
 DWORD FirstActivate = 1;
 
@@ -668,6 +669,7 @@ DWORD PrevSoundQuality;
 InitSound()
 {
    WAVEFORMATEX wfx;
+	DSBCAPS dsbcaps;
 
    if (cfgsoundon == 0) return FALSE;
 
@@ -679,11 +681,13 @@ InitSound()
    if (DS_OK == pDirectSoundCreate8(NULL, &lpDirectSound,NULL))
 	{
 		lpDirectSound->Initialize(NULL);
-		if (DS_OK != lpDirectSound->SetCooperativeLevel(hMainWindow, DSSCL_NORMAL))
+
+		if (DS_OK != lpDirectSound->SetCooperativeLevel(hMainWindow, DSSCL_WRITEPRIMARY))
 		{
 			if (DS_OK != lpDirectSound->SetCooperativeLevel(hMainWindow, DSSCL_EXCLUSIVE))
 				return FALSE;
 		}
+		else UsePrimaryBuffer=1;
 	}
 	else 
 	{
@@ -745,11 +749,14 @@ InitSound()
     
    memset(&dsbd, 0, sizeof(DSBUFFERDESC));
    dsbd.dwSize = sizeof(DSBUFFERDESC);
-   dsbd.dwFlags = DSBCAPS_STICKYFOCUS; // | DSBCAPS_PRIMARYBUFFER;
+   dsbd.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_STICKYFOCUS;
-   dsbd.dwBufferBytes = SoundBufferSize;
+	if(UsePrimaryBuffer) dsbd.dwFlags |= DSBCAPS_PRIMARYBUFFER;
-   dsbd.lpwfxFormat = &wfx;
+   dsbd.dwBufferBytes = UsePrimaryBuffer ? 0 : SoundBufferSize;
+   dsbd.lpwfxFormat = UsePrimaryBuffer ? NULL : &wfx;
 
    if (DS_OK == lpDirectSound->CreateSoundBuffer(&dsbd, &lpPrimaryBuffer, NULL))
+	{
+		if(!UsePrimaryBuffer)
 		{
 	      if (DS_OK == lpPrimaryBuffer->QueryInterface(IID_IDirectSoundBuffer8, (LPVOID *) &lpSoundBuffer))
 	      {
@@ -757,6 +764,22 @@ InitSound()
 		      {
 		         return FALSE;
 		      }
+			}
+			else return FALSE;
+		}
+		else
+		{
+			lpPrimaryBuffer->SetFormat(&wfx);
+			dsbcaps.dwSize=sizeof(DSBCAPS);
+			lpPrimaryBuffer->GetCaps(&dsbcaps);
+			SoundBufferSize=dsbcaps.dwBufferBytes;
+
+	      if (DS_OK != lpPrimaryBuffer->Play(0,0,DSBPLAY_LOOPING))
+	      {
+	         return FALSE;
+	      }
+		}
+	
       SoundEnabled=1;
       FirstSound=0;
       return TRUE;
@@ -766,16 +789,11 @@ InitSound()
       return FALSE;
    }
 }
-   else 
-   {
-      return FALSE;
-   }
-
-}
 
 ReInitSound()
 {
    WAVEFORMATEX wfx;
+	DSBCAPS dsbcaps;
 
    if (lpSoundBuffer)
    {
@@ -784,6 +802,13 @@ ReInitSound()
       lpSoundBuffer = NULL;
    }
 
+   if (lpPrimaryBuffer)
+   {
+      lpPrimaryBuffer->Stop();
+      lpPrimaryBuffer->Release();
+      lpPrimaryBuffer = NULL;
+   }
+
    if (cfgsoundon == 0)
    {
       SoundEnabled = 0;
@@ -853,11 +878,14 @@ ReInitSound()
     
    memset(&dsbd, 0, sizeof(DSBUFFERDESC));
    dsbd.dwSize = sizeof(DSBUFFERDESC);
-   dsbd.dwFlags = DSBCAPS_STICKYFOCUS;
+   dsbd.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_STICKYFOCUS;
-   dsbd.dwBufferBytes = SoundBufferSize;
+	if(UsePrimaryBuffer) dsbd.dwFlags |= DSBCAPS_PRIMARYBUFFER;
-   dsbd.lpwfxFormat = &wfx;
+   dsbd.dwBufferBytes = UsePrimaryBuffer ? 0 : SoundBufferSize;
+   dsbd.lpwfxFormat = UsePrimaryBuffer ? NULL : &wfx;
 
    if (DS_OK == lpDirectSound->CreateSoundBuffer(&dsbd, &lpPrimaryBuffer, NULL))
+	{
+		if(!UsePrimaryBuffer)
 		{
 	      if (DS_OK == lpPrimaryBuffer->QueryInterface(IID_IDirectSoundBuffer8, (LPVOID *) &lpSoundBuffer))
 	      {
@@ -865,8 +893,24 @@ ReInitSound()
 		      {
 		         return FALSE;
 		      }
+			}
+			else return FALSE;
+		}
+		else
+		{
+			lpPrimaryBuffer->SetFormat(&wfx);
+			dsbcaps.dwSize=sizeof(DSBCAPS);
+			lpPrimaryBuffer->GetCaps(&dsbcaps);
+			SoundBufferSize=dsbcaps.dwBufferBytes;
+
+	      if (DS_OK != lpPrimaryBuffer->Play(0,0,DSBPLAY_LOOPING))
+	      {
+	         return FALSE;
+	      }
+		}
+	
       SoundEnabled=1;
-         LastUsedPos=0;
+      FirstSound=0;
       return TRUE;
    } 
    else 
@@ -874,12 +918,6 @@ ReInitSound()
       return FALSE;
    }
 }
-   else 
-   {
-      return FALSE;
-   }
-
-}
 
 BOOL FAR PASCAL InitJoystickInput(LPCDIDEVICEINSTANCE pdinst, LPVOID pvRef)
 {
@@ -2181,7 +2219,8 @@ void UpdateVFrame(void)
 
    if (SoundEnabled == 0) return;
 
-   lpSoundBuffer->GetCurrentPosition(&CurrentPos,&WritePos);
+   if(!UsePrimaryBuffer) lpSoundBuffer->GetCurrentPosition(&CurrentPos,&WritePos);
+	else lpPrimaryBuffer->GetCurrentPosition(&CurrentPos,&WritePos);
 
    if (LastUsedPos <= CurrentPos)
    {
@@ -2262,6 +2301,8 @@ _top_mmx:
                if (DSPBuffer1[i]<-32767)Buffer[i]=-32767;
             }
 
+		if(!UsePrimaryBuffer)
+		{
 	      if (DS_OK!=lpSoundBuffer->Lock(LastUsedPos,
 	                                  SPCSize*2, &lpvPtr1,
 	  	                               &dwBytes1, &lpvPtr2,
@@ -2269,6 +2310,17 @@ _top_mmx:
 	      {
 	         return;
 	      }
+		}
+		else
+		{
+	      if (DS_OK!=lpPrimaryBuffer->Lock(LastUsedPos,
+	                                  SPCSize*2, &lpvPtr1,
+	                                  &dwBytes1, &lpvPtr2,
+	                                  &dwBytes2, 0))
+	      {
+	         return;
+	      }
+		}
 
       Sound=(short *)lpvPtr1;
 
@@ -2279,10 +2331,20 @@ _top_mmx:
          CopyMemory(lpvPtr2, &Buffer[0]+dwBytes1, dwBytes2);
       }   
 
+		if(!UsePrimaryBuffer)
+		{
 	      if (DS_OK != lpSoundBuffer->Unlock(lpvPtr1, dwBytes1, lpvPtr2, dwBytes2))
 	      {
 	         return;
 	      }
+		}
+		else
+		{
+	      if (DS_OK != lpPrimaryBuffer->Unlock(lpvPtr1, dwBytes1, lpvPtr2, dwBytes2))
+	      {
+	         return;
+	      }
+		}
 
       LastUsedPos+=SPCSize*2;
       if (LastUsedPos==SoundBufferSize) LastUsedPos=0;

zsnes/todo.txt

@@ -1,8 +1,6 @@
 Some Issues :
 
 Windows Port:
-- DirectSound in ZSNESw doesn't support the primary sound buffer.
-  Unfortunately, this causes 8-bit quality sounds on certain computers.
 - OpenGL, or Direct3D support would be nice
 - Use another (free) compiler for the windows version (cygwin?)
 - Auto-detect high/low latency connections and adjust settings accordingly