public unsafe WaveFormat ToWaveFormat(out int bufferSize, MFWaveFormatExConvertFlags flags)
{
IntPtr pointer = IntPtr.Zero;
fixed(void *ptr = &bufferSize)
{
MediaFoundationException.Try(MFCreateWaveFormatExFromMFMediaType(BasePtr.ToPointer(), (void *)(&pointer), (void *)(ptr), (int)flags), "interop", "MFCreateWaveFormatExFromMFMediaType");
}
var waveformat = (WaveFormat)Marshal.PtrToStructure(pointer, typeof(WaveFormat)); //todo:
if (waveformat.WaveFormatTag == AudioEncoding.Extensible)
{
waveformat = (WaveFormatExtensible)Marshal.PtrToStructure(pointer, typeof(WaveFormatExtensible));
}
return(waveformat);
}
/// <summary>
/// Converts the <see cref="MFMediaType"/> to a <see cref="WaveFormat"/>.
/// </summary>
/// <param name="flags">Contains a flag from the <see cref="MFWaveFormatExConvertFlags"/> enumeration.</param>
/// <returns>The <see cref="WaveFormat"/> which got created based on the <see cref="MFMediaType"/>.</returns>
public unsafe WaveFormat ToWaveFormat(MFWaveFormatExConvertFlags flags)
{
IntPtr pointer = IntPtr.Zero;
try
{
int cbSize;
MediaFoundationException.Try(
NativeMethods.MFCreateWaveFormatExFromMFMediaType(BasePtr.ToPointer(), &pointer, &cbSize,
(int)flags), "Interop", "MFCreateWaveFormatExFromMFMediaType");
}
finally
{
Marshal.FreeCoTaskMem(pointer);
}
//var waveformat = (WaveFormat)Marshal.PtrToStructure(pointer, typeof(WaveFormat));
//if (waveformat.WaveFormatTag == AudioEncoding.Extensible)
// waveformat = (WaveFormatExtensible)Marshal.PtrToStructure(pointer, typeof(WaveFormatExtensible));
//return waveformat;
return(WaveFormatMarshaler.PointerToWaveFormat(pointer));
}