unsafe protected override void PreDetachVirtualChannel()
{
DirectSoundWorld.criticalSection.Enter();
DirectFileStreamSound currentFileStreamSound = currentSound as DirectFileStreamSound;
if( currentFileStreamSound != null )
DirectSoundWorld.Instance.fileStreamRealChannels.Remove( this );
if( currentSound3DBuffer != null )
{
IDirectSound3DBuffer8.Release( currentSound3DBuffer );
currentSound3DBuffer = null;
}
if( currentSoundBuffer != null )
{
IDirectSoundBuffer.Stop( currentSoundBuffer );
currentSound.FreeBuffer( currentSoundBuffer );
currentSoundBuffer = null;
}
if( streamBuffer != null )
{
NativeUtils.Free( (IntPtr)streamBuffer );
streamBuffer = null;
}
needStopAfterBufferRead = false;
streamBufferLength = 0;
needStopVirtualChannel = false;
currentSound = null;
DirectSoundWorld.criticalSection.Leave();
}
unsafe protected override void PostAttachVirtualChannel()
{
DirectSoundWorld.criticalSection.Enter();
int hr;
currentSound = (DirectSound)CurrentVirtualChannel.CurrentSound;
bool mode3d = (int)( currentSound.Mode & SoundMode.Mode3D ) != 0;
bool loop = (int)( currentSound.Mode & SoundMode.Loop ) != 0;
//DirectSampleSound
DirectSampleSound currentSampleSound = currentSound as DirectSampleSound;
if( currentSampleSound != null )
{
int lastBufferCount = currentSound.soundBuffers.Count;
currentSoundBuffer = currentSound.GetBuffer( currentSampleSound.soundSamples.Length );
if( currentSoundBuffer == null )
{
PreDetachVirtualChannel();
DirectSoundWorld.criticalSection.Leave();
return;
}
bool needFillData = false;
if( lastBufferCount == 0 )
needFillData = true;
bool restored = false;
if( !currentSound.RestoreSoundBuffers( out restored ) )
{
PreDetachVirtualChannel();
DirectSoundWorld.criticalSection.Leave();
return;
}
if( restored )
needFillData = true;
if( needFillData )
{
if( !currentSampleSound.FillSoundBuffersWithData() )
{
PreDetachVirtualChannel();
DirectSoundWorld.criticalSection.Leave();
return;
}
}
}
//DirectFileStreamSound, DirectDataStreamSound
DirectFileStreamSound currentFileStreamSound = currentSound as DirectFileStreamSound;
DirectDataStreamSound currentDataStreamSound = currentSound as DirectDataStreamSound;
if( currentFileStreamSound != null || currentDataStreamSound != null )
{
int needBufferSize;
if( currentFileStreamSound != null )
{
int numSamples = (int)currentFileStreamSound.vorbisFile.pcm_total( -1 );
int channels;
int rate;
currentFileStreamSound.vorbisFile.get_info( -1, out channels, out rate );
int sizeInBytes = numSamples * channels * 2;
needBufferSize = sizeInBytes / 2;
if( needBufferSize > 65536 * 2 )
needBufferSize = 65536 * 2;
}
else
{
needBufferSize = currentDataStreamSound.creationBufferSize;
}
currentSoundBuffer = currentSound.GetBuffer( needBufferSize );
if( currentSoundBuffer == null )
{
PreDetachVirtualChannel();
DirectSoundWorld.criticalSection.Leave();
return;
}
streamBuffer = (byte*)NativeUtils.Alloc( NativeMemoryAllocationType.SoundAndVideo,
currentSound.bufferSize );
streamBufferLength = 0;
bool restored = false;
if( !currentSound.RestoreSoundBuffers( out restored ) )
{
PreDetachVirtualChannel();
DirectSoundWorld.criticalSection.Leave();
return;
}
if( restored )
{
//buffer will be cleared in the BeginStreamPlay()
}
}
//currentSound3DBuffer
if( mode3d )
{
void*/*IDirectSound3DBuffer8*/ sound3DBuffer;
GUID guid = DSound.IID_IDirectSound3DBuffer8;
hr = IDirectSoundBuffer.QueryInterface( currentSoundBuffer, ref guid, &sound3DBuffer );
if( Wrapper.FAILED( hr ) )
{
PreDetachVirtualChannel();
DirectSoundWorld.Warning( "IDirectSoundBuffer.QueryInterface", hr );
DirectSoundWorld.criticalSection.Leave();
return;
}
currentSound3DBuffer = (IDirectSound3DBuffer8*)sound3DBuffer;
}
//update parameters
if( mode3d )
{
UpdatePosition2();
UpdateVelocity2();
}
else
UpdatePan2();
UpdatePitch2();
UpdateVolume2();
UpdateTime2();
if( currentFileStreamSound != null || currentDataStreamSound != null )
BeginStreamPlay();
uint playFlags = 0;
if( loop || currentFileStreamSound != null || currentDataStreamSound != null )
playFlags |= DSound.DSBPLAY_LOOPING;
hr = IDirectSoundBuffer.Play( currentSoundBuffer, 0, 0, playFlags );
if( Wrapper.FAILED( hr ) )
{
PreDetachVirtualChannel();
DirectSoundWorld.Warning( "IDirectSoundBuffer.Play", hr );
DirectSoundWorld.criticalSection.Leave();
return;
}
if( currentFileStreamSound != null )
DirectSoundWorld.Instance.fileStreamRealChannels.Add( this );
needStopVirtualChannel = false;
DirectSoundWorld.criticalSection.Leave();
}