protected override void OpenMediaAsync()
{
Dictionary <MediaSourceAttributesKeys, string> media_attributes = new Dictionary <MediaSourceAttributesKeys, string> ();
List <MediaStreamDescription> media_streams = new List <MediaStreamDescription> ();
Dictionary <MediaStreamAttributeKeys, string> stream_attributes = new Dictionary <MediaStreamAttributeKeys, string> ();
MediaStreamDescription media_stream = new MediaStreamDescription(MediaStreamType.Audio, stream_attributes);
long duration = 60 * 10000;
WaveFormatEx wave = new WaveFormatEx();
Mp3Frame frame = Mp3Frame.Read(stream);
wave.FormatTag = 85;
wave.AvgBytesPerSec = (uint)frame.Bitrate / 8;
wave.BitsPerSample = 0;
wave.BlockAlign = 1;
wave.Channels = (ushort)frame.Channels;
wave.SamplesPerSec = (ushort)frame.SampleRate;
wave.Size = 12;
media_attributes.Add(MediaSourceAttributesKeys.CanSeek, "0");
media_attributes.Add(MediaSourceAttributesKeys.Duration, duration.ToString());
stream_attributes [MediaStreamAttributeKeys.CodecPrivateData] = wave.Encoded;
media_streams.Add(media_stream);
try {
this.frame = frame;
this.description = media_stream;
ReportOpenMediaCompleted(media_attributes, media_streams);
opened = DateTime.Now;
} catch (Exception ex) {
Console.WriteLine(ex);
}
}
protected override void GetSampleAsync(MediaStreamType mediaStreamType)
{
Mp3Frame frame;
MediaStreamSample sample;
Dictionary <MediaSampleAttributeKeys, string> attribs = new Dictionary <MediaSampleAttributeKeys, string> ();
//string format = "HH:mm:ss.ffff";
//if (opened == DateTime.MinValue)
// opened = DateTime.Now;
//Debug.WriteLine ("{0} GetSampleAsync stamp: {1}", (DateTime.Now - opened).ToString (), TimeSpan.FromMilliseconds (current_pts / 10000).ToString ());
try {
if (this.frame != null)
{
frame = this.frame;
this.frame = null;
}
else
{
frame = Mp3Frame.Read(stream);
}
sample = new MediaStreamSample(description, new MemoryStream(frame.data), 0, frame.data.Length, current_pts, attribs);
current_pts += frame.Duration;
ReportGetSampleCompleted(sample);
} catch (System.IO.EndOfStreamException ex) {
Console.WriteLine(ex);
sample = new MediaStreamSample(description, null, 0, 0, 0, attribs);
ReportGetSampleCompleted(sample);
} catch (Exception ex) {
Console.WriteLine(ex);
ReportGetSampleCompleted(null);
}
}