/// <summary>
/// Helper function to retrieve a WaveFormat structure from a pointer
/// </summary>
/// <param name="pointer">Pointer to the WaveFormat rawdata</param>
/// <returns>WaveFormat structure</returns>
public unsafe static WaveFormat MarshalFrom(IntPtr pointer)
{
if (pointer == IntPtr.Zero)
{
return(null);
}
WaveFormat.__PcmNative _PcmNative = *(WaveFormat.__PcmNative *)((void *)pointer);
WAVE_FORMAT waveFormatEncoding = _PcmNative.waveFormatTag;
if (_PcmNative.channels <= 2 && (waveFormatEncoding == WAVE_FORMAT.PCM || waveFormatEncoding == WAVE_FORMAT.IEEE_FLOAT || waveFormatEncoding == WAVE_FORMAT.WMAUDIO2 || waveFormatEncoding == WAVE_FORMAT.WMAUDIO3))
{
WaveFormat waveFormat = new WaveFormat();
waveFormat.__MarshalFrom(ref _PcmNative);
return(waveFormat);
}
if (waveFormatEncoding == WAVE_FORMAT.EXTENSIBLE)
{
WaveFormatExtensible waveFormatExtensible = new WaveFormatExtensible();
waveFormatExtensible.__MarshalFrom(ref *(WaveFormatExtensible.__Native *)((void *)pointer));
return(waveFormatExtensible);
}
if (waveFormatEncoding == WAVE_FORMAT.ADPCM)
{
WaveFormatAdpcm waveFormatAdpcm = new WaveFormatAdpcm();
waveFormatAdpcm.__MarshalFrom(ref *(WaveFormatAdpcm.__Native *)((void *)pointer));
return(waveFormatAdpcm);
}
throw new InvalidOperationException(string.Format("Unsupported WaveFormat [{0}]", new object[]
{
waveFormatEncoding
}));
}
internal void __MarshalTo(ref WaveFormat.__PcmNative @ref)
{
@ref.waveFormatTag = this.waveFormatTag;
@ref.channels = this.channels;
@ref.sampleRate = this.sampleRate;
@ref.averageBytesPerSecond = this.averageBytesPerSecond;
@ref.blockAlign = this.blockAlign;
@ref.bitsPerSample = this.bitsPerSample;
}
internal void __MarshalFrom(ref WaveFormat.__PcmNative @ref)
{
this.waveFormatTag = @ref.waveFormatTag;
this.channels = @ref.channels;
this.sampleRate = @ref.sampleRate;
this.averageBytesPerSecond = @ref.averageBytesPerSecond;
this.blockAlign = @ref.blockAlign;
this.bitsPerSample = @ref.bitsPerSample;
this.extraSize = 0;
}
internal void __MarshalFree(ref WaveFormat.__PcmNative @ref)
{
@ref.__MarshalFree();
}