/// <summary>
/// Creates a media target.
/// </summary>
/// <param name="sinkWriter">The previously created SinkWriter.</param>
/// <param name="videoPixelSize">The pixel size of the video.</param>
/// <param name="streamIndex">The stream index for the new target.</param>
protected override void CreateMediaTarget(MF.SinkWriter sinkWriter, Size2 videoPixelSize, out int streamIndex)
{
using (MF.MediaType mediaTypeOut = new MF.MediaType())
{
mediaTypeOut.Set <Guid>(MF.MediaTypeAttributeKeys.MajorType, MF.MediaTypeGuids.Video);
mediaTypeOut.Set <Guid>(MF.MediaTypeAttributeKeys.Subtype, VIDEO_ENCODING_FORMAT);
mediaTypeOut.Set <int>(MF.MediaTypeAttributeKeys.AvgBitrate, base.Bitrate * 1000);
mediaTypeOut.Set <int>(MF.MediaTypeAttributeKeys.InterlaceMode, (int)MF.VideoInterlaceMode.Progressive);
mediaTypeOut.Set <long>(MF.MediaTypeAttributeKeys.FrameSize, MFHelper.GetMFEncodedIntsByValues(videoPixelSize.Width, videoPixelSize.Height));
mediaTypeOut.Set <long>(MF.MediaTypeAttributeKeys.FrameRate, MFHelper.GetMFEncodedIntsByValues(base.Framerate, 1));
sinkWriter.AddStream(mediaTypeOut, out streamIndex);
}
}
public MediaFoundationAudioWriter(MF.SinkWriter sinkWriter, ref WAVEFORMATEX waveFormat, int desiredBitRate = 192000)
{
var sharpWf = waveFormat.ToSharpDX();
// Information on configuring an AAC media type can be found here:
// http://msdn.microsoft.com/en-gb/library/windows/desktop/dd742785%28v=vs.85%29.aspx
var outputMediaType = SelectMediaType(AudioFormat, sharpWf, desiredBitRate);
if (outputMediaType == null)
{
throw new InvalidOperationException("No suitable encoders available");
}
var inputMediaType = new MF.MediaType();
var size = 18 + sharpWf.ExtraSize;
sinkWriter.AddStream(outputMediaType, out streamIndex);
MF.MediaFactory.InitMediaTypeFromWaveFormatEx(inputMediaType, new[] { sharpWf }, size);
sinkWriter.SetInputMediaType(streamIndex, inputMediaType, null);
}
