/// <summary>
/// Returns a new instance of the <see cref="MediaFoundationEncoder"/> class, configured as wma encoder.
/// </summary>
/// <param name="sourceFormat">The input format, of the data to encode.</param>
/// <param name="bitRate">The bitrate to use. The final bitrate can differ from the specified value.</param>
/// <param name="targetStream">The stream to write to.</param>
/// <remarks>For more information about supported input and output formats, see <see href="http://msdn.microsoft.com/en-us/library/windows/desktop/ff819498(v=vs.85).aspx"/>.</remarks>
/// <returns>A new instance of the <see cref="MediaFoundationEncoder"/> class, configured as wma encoder.</returns>
// ReSharper disable once InconsistentNaming
public static MediaFoundationEncoder CreateWMAEncoder(WaveFormat sourceFormat, Stream targetStream,
int bitRate = 192000)
{
if (sourceFormat == null)
{
throw new ArgumentNullException("sourceFormat");
}
if (targetStream == null)
{
throw new ArgumentNullException("targetStream");
}
if (targetStream.CanWrite != true)
{
throw new ArgumentException("Stream not writeable.", "targetStream");
}
MediaType targetMediaType = FindBestMediaType(AudioSubTypes.WindowsMediaAudio,
sourceFormat.SampleRate, sourceFormat.Channels, bitRate);
MediaType sourceMediaType = MediaFoundationCore.MediaTypeFromWaveFormat(sourceFormat);
if (targetMediaType == null)
{
throw new PlatformNotSupportedException("No WMA-Encoder was found.");
}
return(new MediaFoundationEncoder(targetStream, sourceMediaType, targetMediaType,
TranscodeContainerTypes.MFTranscodeContainerType_ASF));
}
static MediaFoundationDecoder()
{
MediaFoundationCore.Startup(); //make sure that the MediaFoundation is started up.
}
static MediaFoundationEncoder()
{
MediaFoundationCore.Startup();
}
private SourceReader Initialize(ByteStream byteStream)
{
return(Initialize(MediaFoundationCore.CreateSourceReaderFromByteStream(byteStream, null)));
}
