unsafe public override bool RecordStart(Sound sound)
{
criticalSection.Enter();
DirectCaptureSound captureSound = sound as DirectCaptureSound;
if (captureSound == null)
{
criticalSection.Leave();
DirectSoundWorld.Warning("Recording failed. Is sound a not for recording.");
return(false);
}
captureSound.readPosition = 0;
int hr = IDirectSoundCaptureBuffer.Start(captureSound.captureBuffer,
DSound.DSCBSTART_LOOPING);
if (Wrapper.FAILED(hr))
{
criticalSection.Leave();
DirectSoundWorld.Warning("IDirectSoundCaptureBuffer.Start", hr);
return(false);
}
recordingSound = captureSound;
criticalSection.Leave();
return(true);
}
unsafe public override void RecordStop()
{
criticalSection.Enter();
if (recordingSound != null)
{
int hr = IDirectSoundCaptureBuffer.Stop(recordingSound.captureBuffer);
if (Wrapper.FAILED(hr))
{
DirectSoundWorld.Warning("IDirectSoundCaptureBuffer.Stop", hr);
}
recordingSound = null;
}
criticalSection.Leave();
}
unsafe protected override void OnDispose()
{
DirectSoundWorld.criticalSection.Enter();
if (captureBuffer != null)
{
IDirectSoundCaptureBuffer.Release(captureBuffer);
captureBuffer = null;
}
if (soundCapture != null)
{
IDirectSoundCapture8.Release(soundCapture);
soundCapture = null;
}
DirectSoundWorld.criticalSection.Leave();
base.OnDispose();
}
unsafe public override int RecordRead(byte[] buffer, int length)
{
DirectSoundWorld.criticalSection.Enter();
int hr;
uint dwBufferPosition;
hr = IDirectSoundCaptureBuffer.GetCurrentPosition(captureBuffer,
(uint *)null, &dwBufferPosition);
if (Wrapper.FAILED(hr))
{
DirectSoundWorld.criticalSection.Leave();
return(0);
}
int bufferPosition = (int)dwBufferPosition;
int bytesAvailable;
if (bufferPosition >= readPosition)
{
bytesAvailable = bufferPosition - readPosition;
}
else
{
bytesAvailable = (bufferSize - readPosition) + bufferPosition;
}
int needLength = Math.Min(length, bytesAvailable);
if (needLength == 0)
{
DirectSoundWorld.criticalSection.Leave();
return(0);
}
void *lockedBuffer = null;
uint lockedBufferSize = 0;
void *lockedBuffer2 = null;
uint lockedBufferSize2 = 0;
int startPosition = readPosition - needLength;
if (startPosition < 0)
{
startPosition += bufferSize;
}
hr = IDirectSoundCaptureBuffer.Lock(captureBuffer, (uint)startPosition, (uint)needLength,
&lockedBuffer, &lockedBufferSize, &lockedBuffer2, &lockedBufferSize2, 0);
if (Wrapper.FAILED(hr))
{
DirectSoundWorld.criticalSection.Leave();
DirectSoundWorld.Warning("IDirectSoundCaptureBuffer.Lock", hr);
return(0);
}
if (lockedBuffer != null && lockedBufferSize != 0)
{
Marshal.Copy((IntPtr)lockedBuffer, buffer, 0, (int)lockedBufferSize);
}
if (lockedBuffer2 != null && lockedBufferSize2 != 0)
{
Marshal.Copy((IntPtr)lockedBuffer2, buffer,
(int)lockedBufferSize, (int)lockedBufferSize2);
}
IDirectSoundCaptureBuffer.Unlock(captureBuffer, lockedBuffer, lockedBufferSize,
lockedBuffer2, lockedBufferSize2);
readPosition += needLength;
if (readPosition >= bufferSize)
{
readPosition -= bufferSize;
}
DirectSoundWorld.criticalSection.Leave();
return((int)lockedBufferSize + (int)lockedBufferSize2);
}
unsafe public DirectCaptureSound(SoundMode mode, int channels, int frequency, int bufferSize)
{
SoundMode newMode = mode | SoundMode.Loop | SoundMode.Software;
int hr;
if (DirectSoundWorld.Instance.recordDriverIndex == -1)
{
DirectSoundWorld.Warning("Recording failed. No active device.");
return;
}
GUID deviceGuid = DirectSoundWorld.Instance.recordDriverGuids[
DirectSoundWorld.Instance.recordDriverIndex];
//soundCapture
void */*IDirectSoundCapture8*/ tempSoundCapture;
hr = DSound.DirectSoundCaptureCreate(&deviceGuid, out tempSoundCapture, null);
if (Wrapper.FAILED(hr))
{
DirectSoundWorld.Warning("DirectSoundCaptureCreate", hr);
return;
}
soundCapture = (IDirectSoundCapture8 *)tempSoundCapture;
//waveFormat
waveFormat = (WAVEFORMATEX *)NativeUtils.Alloc(NativeMemoryAllocationType.SoundAndVideo,
sizeof(WAVEFORMATEX));
NativeUtils.ZeroMemory((IntPtr)waveFormat, sizeof(WAVEFORMATEX));
waveFormat->wFormatTag = DSound.WAVE_FORMAT_PCM;
waveFormat->nChannels = (ushort)channels;
waveFormat->nSamplesPerSec = (uint)frequency;
waveFormat->wBitsPerSample = 16;
waveFormat->nBlockAlign = (ushort)((waveFormat->nChannels * waveFormat->wBitsPerSample) / 8);
waveFormat->nAvgBytesPerSec = waveFormat->nSamplesPerSec * waveFormat->nBlockAlign;
//captureBuffer
DSCBUFFERDESC bufferDesc = new DSCBUFFERDESC();
//ZeroMemory( &bufferDesc, sizeof( DSCBUFFERDESC ) );
bufferDesc.dwSize = (uint)sizeof(DSCBUFFERDESC);
bufferDesc.dwBufferBytes = (uint)bufferSize;
bufferDesc.lpwfxFormat = waveFormat;
void */*IDirectSoundCaptureBuffer*/ tempCaptureBuffer;
hr = IDirectSoundCapture8.CreateCaptureBuffer(soundCapture,
ref bufferDesc, out tempCaptureBuffer, null);
if (Wrapper.FAILED(hr))
{
DirectSoundWorld.Warning("CreateCaptureBuffer", hr);
IDirectSoundCapture8.Release(soundCapture);
soundCapture = null;
return;
}
captureBuffer = (IDirectSoundCaptureBuffer *)tempCaptureBuffer;
//get bufferSize
DSCBCAPS bufferCaps = new DSCBCAPS();
//ZeroMemory( &bufferCaps, sizeof( DSCBCAPS ) );
bufferCaps.dwSize = (uint)sizeof(DSCBCAPS);
IDirectSoundCaptureBuffer.GetCaps(captureBuffer, ref bufferCaps);
this.bufferSize = (int)bufferCaps.dwBufferBytes;
Init(null, newMode, 100000.0f, channels, frequency);
}
