/// <summary>
/// Queries the available bitrates for a given encoding output type, sample rate and number of channels
/// </summary>
/// <param name="audioSubtype">Audio subtype - a value from the AudioSubtypes class</param>
/// <param name="sampleRate">The sample rate of the PCM to encode</param>
/// <param name="channels">The number of channels of the PCM to encode</param>
/// <returns>An array of available bitrates in average bits per second</returns>
// Token: 0x0600093A RID: 2362 RVA: 0x0001AAE0 File Offset: 0x00018CE0
public static int[] GetEncodeBitrates(Guid audioSubtype, int sampleRate, int channels)
{
return((from br in (from mt in MediaFoundationEncoder.GetOutputMediaTypes(audioSubtype)
where mt.SampleRate == sampleRate && mt.ChannelCount == channels
select mt.AverageBytesPerSecond * 8).Distinct <int>()
orderby br
select br).ToArray <int>());
}
/// <summary>
/// Tries to find the encoding media type with the closest bitrate to that specified
/// </summary>
/// <param name="audioSubtype">Audio subtype, a value from AudioSubtypes</param>
/// <param name="inputFormat">Your encoder input format (used to check sample rate and channel count)</param>
/// <param name="desiredBitRate">Your desired bitrate</param>
/// <returns>The closest media type, or null if none available</returns>
// Token: 0x0600093F RID: 2367 RVA: 0x0001AE7C File Offset: 0x0001907C
public static MediaType SelectMediaType(Guid audioSubtype, WaveFormat inputFormat, int desiredBitRate)
{
return((from mt in MediaFoundationEncoder.GetOutputMediaTypes(audioSubtype)
where mt.SampleRate == inputFormat.SampleRate && mt.ChannelCount == inputFormat.Channels
select new
{
MediaType = mt,
Delta = Math.Abs(desiredBitRate - mt.AverageBytesPerSecond * 8)
} into mt
orderby mt.Delta
select mt.MediaType).FirstOrDefault <MediaType>());
}