/// <summary>
/// Sets and initializes the targetstream for the encoding process.
/// </summary>
/// <param name="stream">Stream which should be used as the targetstream.</param>
/// <param name="inputMediaType">Mediatype of the raw input data to encode.</param>
/// <param name="targetMediaType">Mediatype of the encoded data.</param>
/// <param name="containerType">Container type which should be used.</param>
protected void SetTargetStream(Stream stream, MediaType inputMediaType, MediaType targetMediaType,
Guid containerType)
{
MediaAttributes attributes = null;
try
{
var buffer = new byte[stream.Length];
stream.Read(buffer, 0, buffer.Length);
_targetStream = new ByteStream(buffer);
attributes = new MediaAttributes(2);
attributes.Set(MediaFoundationAttributes.MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);
attributes.Set(MediaFoundationAttributes.MF_TRANSCODE_CONTAINERTYPE, containerType);
_sinkWriter = SinkWriter.Create(_targetStream, attributes);
_streamIndex = _sinkWriter.AddStream(targetMediaType);
_sinkWriter.SetInputMediaType(_streamIndex, inputMediaType, null);
_targetMediaType = targetMediaType;
_sourceBytesPerSecond = inputMediaType.AverageBytesPerSecond;
//initialize the sinkwriter
_sinkWriter.BeginWriting();
}
catch (Exception)
{
if (_sinkWriter != null)
{
_sinkWriter.Dispose();
_sinkWriter = null;
}
if (_targetStream != null)
{
_targetStream.Dispose();
_targetStream = null;
}
throw;
}
finally
{
if (attributes != null)
{
attributes.Dispose();
}
}
}