pending: sound updates

* increase max channels to 256 to prevent us from hitting the cap in team fights
* make more room for static channels over dynamic channels

* dsound updates:
  * use DSBCAPS_TRUEPLAYPOSITION for accurate GetCurrentPosition
  * Pass NULL to GetCurrentPosition for write cursor, to skip querying it
  * limit dsound max distance, we only use it for local speaker spatialization

* implement threaded sound
  a dedicated thread to doing all sound updates
  it gets notified when the main thread wants a sound update, and wakes up from sleep

* backport 64 bit sound changes from CSGO

* enable spatialization effects by default

Author: mastercoms

src/engine/audio/private/snd_channels.h

@@ -126,8 +126,8 @@ struct channel_t
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 
-#define	MAX_CHANNELS			128
-#define	MAX_DYNAMIC_CHANNELS	64
+#define	MAX_CHANNELS			256
+#define	MAX_DYNAMIC_CHANNELS	32
 
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

src/engine/audio/private/snd_dev_direct.cpp

@@ -370,7 +370,7 @@ int CAudioDirectSound::PaintBegin( float mixAheadTime, int soundtime, int lpaint
 	DWORD	dwStatus;
 
 	// If using surround, there are 4 or 5 different buffers being used and the pDSBuf is NULL.
-	if ( IsUsingBufferPerSpeaker() ) 
+	if ( IsUsingBufferPerSpeaker() )
 	{
 		if (pDSBufFL->GetStatus(&dwStatus) != DS_OK)
 			Msg ("Couldn't get SURROUND FL sound buffer status\n");
@@ -674,6 +674,7 @@ bool CAudioDirectSound::SNDDMA_InitInterleaved( LPDIRECTSOUND lpDS, WAVEFORMATEX
 			dsbdesc.dwFlags = 0;
 			break;
 		}
+		dsbdesc.dwFlags |= DSBCAPS_TRUEPLAYPOSITION;
 		if ( !snd_mute_losefocus.GetBool() )
 		{
 			dsbdesc.dwFlags |= DSBCAPS_GLOBALFOCUS;
@@ -688,7 +689,7 @@ bool CAudioDirectSound::SNDDMA_InitInterleaved( LPDIRECTSOUND lpDS, WAVEFORMATEX
 	if ( !bSuccess )
 		return false;
 
-	DWORD dwSize = 0, dwWrite;
+	DWORD dwSize = 0;
 	DWORD *pBuffer = 0;
 	if ( !LockDSBuffer( pDSBuf, &pBuffer, &dwSize, "DS_INTERLEAVED", DSBLOCK_ENTIREBUFFER ) )
 		return false;
@@ -707,7 +708,7 @@ bool CAudioDirectSound::SNDDMA_InitInterleaved( LPDIRECTSOUND lpDS, WAVEFORMATEX
 	pDSBuf->Play(0, 0, DSBPLAY_LOOPING);
 
 	pDSBuf->Stop();
-	pDSBuf->GetCurrentPosition(&m_outputBufferStartOffset, &dwWrite);
+	pDSBuf->GetCurrentPosition(&m_outputBufferStartOffset, NULL);
 
 	pDSBuf->Play(0, 0, DSBPLAY_LOOPING);
 
@@ -725,7 +726,7 @@ sndinitstat CAudioDirectSound::SNDDMA_InitDirect( void )
 {
 	DSBUFFERDESC	dsbuf;
 	DSBCAPS			dsbcaps;
-	DWORD			dwSize, dwWrite;
+	DWORD			dwSize;
 	WAVEFORMATEX	format;
 	WAVEFORMATEX	pformat; 
 	HRESULT			hresult;
@@ -830,7 +831,7 @@ sndinitstat CAudioDirectSound::SNDDMA_InitDirect( void )
 	// sound hardware format
 	Q_memset( &dsbuf, 0, sizeof(dsbuf) );
 	dsbuf.dwSize = sizeof(DSBUFFERDESC);
-	dsbuf.dwFlags = DSBCAPS_PRIMARYBUFFER;
+	dsbuf.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_TRUEPLAYPOSITION;
 	if ( snd_legacy_surround.GetBool() || m_bSurround )
 	{
 		dsbuf.dwFlags |= DSBCAPS_CTRL3D;
@@ -900,7 +901,8 @@ sndinitstat CAudioDirectSound::SNDDMA_InitDirect( void )
 			// create the secondary buffer we'll actually work with
 			Q_memset( &dsbuf, 0, sizeof(dsbuf) );
 			dsbuf.dwSize = sizeof(DSBUFFERDESC);
-			dsbuf.dwFlags = DSBCAPS_LOCSOFTWARE;		// NOTE: don't use CTRLFREQUENCY (slow)
+			// NOTE: don't use CTRLFREQUENCY (slow)
+			dsbuf.dwFlags = DSBCAPS_LOCSOFTWARE | DSBCAPS_TRUEPLAYPOSITION;
 			dsbuf.dwBufferBytes = SECONDARY_BUFFER_SIZE;
 			dsbuf.lpwfxFormat = &format;
 			if ( !snd_mute_losefocus.GetBool() )
@@ -992,7 +994,7 @@ sndinitstat CAudioDirectSound::SNDDMA_InitDirect( void )
 
 		pDSBuf->Stop();
 
-		pDSBuf->GetCurrentPosition(&m_outputBufferStartOffset, &dwWrite);
+		pDSBuf->GetCurrentPosition(&m_outputBufferStartOffset, NULL);
 
 		pDSBuf->Play(0, 0, DSBPLAY_LOOPING);
 	}
@@ -1288,7 +1290,7 @@ void DS3D_SetBufferParams( LPDIRECTSOUND3DBUFFER pDSBuf3D, D3DVECTOR *pbpos, D3D
 	bparm.vConeOrientation = bdir;
 	bparm.lConeOutsideVolume = DSBVOLUME_MIN;
 	bparm.flMinDistance = 100.0;		// no rolloff (until > 2.0 meter distance)
-	bparm.flMaxDistance = DS3D_DEFAULTMAXDISTANCE;
+	bparm.flMaxDistance = 1000.0;
 	bparm.dwMode = DS3DMODE_NORMAL;
 
 	hr = pDSBuf3D->SetAllParameters( &bparm, DS3D_DEFERRED );
@@ -1300,7 +1302,7 @@ bool CAudioDirectSound::SNDDMA_InitSurround(LPDIRECTSOUND lpDS, WAVEFORMATEX* lp
 {
 	DSBUFFERDESC	dsbuf;
 	WAVEFORMATEX wvex;
-	DWORD dwSize, dwWrite;
+	DWORD dwSize;
 	int reps;
 	HRESULT hresult;
 	void			*lpData = NULL;
@@ -1316,8 +1318,9 @@ bool CAudioDirectSound::SNDDMA_InitSurround(LPDIRECTSOUND lpDS, WAVEFORMATEX* lp
 
 	memset (&dsbuf, 0, sizeof(dsbuf));
 	dsbuf.dwSize = sizeof(DSBUFFERDESC);
-														 // NOTE: LOCHARDWARE causes SB AWE64 to crash in it's DSOUND driver
-	dsbuf.dwFlags = DSBCAPS_CTRL3D;						 // don't use CTRLFREQUENCY (slow)
+	// NOTE: LOCHARDWARE causes SB AWE64 to crash in it's DSOUND driver
+	// don't use CTRLFREQUENCY (slow)
+	dsbuf.dwFlags = DSBCAPS_CTRL3D | DSBCAPS_TRUEPLAYPOSITION;
 	if ( !snd_mute_losefocus.GetBool() )
 	{
 		dsbuf.dwFlags |= DSBCAPS_GLOBALFOCUS;
@@ -1623,7 +1626,7 @@ bool CAudioDirectSound::SNDDMA_InitSurround(LPDIRECTSOUND lpDS, WAVEFORMATEX* lp
 
 	// get hardware playback position, store it, syncronize all buffers to FL
 
-	pDSBufFL->GetCurrentPosition(&m_outputBufferStartOffset, &dwWrite);
+	pDSBufFL->GetCurrentPosition(&m_outputBufferStartOffset, NULL);
 	pDSBufFR->SetCurrentPosition(m_outputBufferStartOffset);
 	pDSBufRL->SetCurrentPosition(m_outputBufferStartOffset);
 	pDSBufRR->SetCurrentPosition(m_outputBufferStartOffset);