public override AudioBuffer CreateBuffer(IAudioStream target)
{
int size = AudioBuffer.DefaultBufferSpan * target.Frequency * target.Channels * target.BitsPerSample / 8;
WaveFormatEx fmt = new WaveFormatEx(target.Format, target.Channels, target.Frequency, target.BitsPerSample);
DS.DSBufferCapsFlags flags = DS.DSBufferCapsFlags.CtrlVolume | DS.DSBufferCapsFlags.LocDefer | DS.DSBufferCapsFlags.GlobalFocus | DS.DSBufferCapsFlags.GetCurrentPosition2;
DS.DSBufferDesc desc = new DS.DSBufferDesc((uint)size, flags, &fmt, Guid.Empty);
return(new wAudioBuffer(this, ref desc)
{
_source = target, _owner = this
});
}
//internal wAudioBuffer(wAudioProvider parent, DS.IDirectSoundBuffer8 buffer) { _dsb8 = buffer; }
internal wAudioBuffer(wAudioProvider parent, ref DS.DSBufferDesc desc)
{
_parent = parent;
if (desc.dwBufferBytes == 0)
{
return;
}
_parent._ds8.CreateSoundBuffer(ref desc, out _dsb8, IntPtr.Zero);
_format = desc.lpwfxFormat->wFormatTag;
_frequency = (int)desc.lpwfxFormat->nSamplesPerSec;
_channels = desc.lpwfxFormat->nChannels;
_bitsPerSample = desc.lpwfxFormat->wBitsPerSample;
_dataLength = (int)desc.dwBufferBytes;
_blockAlign = _bitsPerSample * _channels / 8;
_sampleLength = _dataLength / _blockAlign;
}