internal wAudioProvider(AudioDevice device)
{
_device = device ?? wAudioDevice.DefaultPlaybackDevice;
Guid guid = ((wAudioDevice)_device)._guid;
DS.DirectSoundCreate8(&guid, out _ds8, IntPtr.Zero);
}
//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;
}
