internal ShoutcastStream(Uri serverUrl, ShoutcastStreamFactoryConnectionSettings settings, SocketWrapper socketWrapper) { this.socket = socketWrapper; this.serverUrl = serverUrl; this.serverSettings = settings; StationInfo = new ServerStationInfo(); AudioInfo = new ServerAudioInfo(); cancelTokenSource = new CancellationTokenSource(); //MediaStreamSource = new MediaStreamSource(null); streamProcessor = new ShoutcastStreamProcessor(this, socket); }
public ShoutcastMediaSourceStream(Uri url, ShoutcastServerType stationServerType = ShoutcastServerType.Shoutcast, string relativePath = ";", bool getMetadata = true) { StationInfo = new ShoutcastStationInfo(); streamUrl = url; serverType = stationServerType; socket = new StreamSocket(); AudioInfo = new ServerAudioInfo(); ShouldGetMetadata = getMetadata; this.relativePath = relativePath; }
private async Task <AudioEncodingProperties> ParseEncodingFromMediaAsync() { //grab the first frame and strip it for information AudioEncodingProperties obtainedProperties = null; IBuffer buffer = null; if (AudioInfo.AudioFormat == StreamAudioFormat.AAC) { //obtainedProperties = AudioEncodingProperties.CreateAac(0, 2, 0); throw new Exception("Not supported."); } var provider = AudioProviderFactory.GetAudioProvider(AudioInfo.AudioFormat); ServerAudioInfo firstFrame = await provider.GrabFrameInfoAsync(streamProcessor, AudioInfo).ConfigureAwait(false); //loop until we receive a few "frames" with identical information. while (true) { cancelTokenSource.Token.ThrowIfCancellationRequested(); ServerAudioInfo secondFrame = await provider.GrabFrameInfoAsync(streamProcessor, AudioInfo).ConfigureAwait(false); if (firstFrame.BitRate == secondFrame.BitRate && firstFrame.SampleRate == secondFrame.SampleRate) { //both frames are identical, use one of them and escape the loop. AudioInfo = firstFrame; break; } else { //frames aren't identical, get rid of the first one using the second frame and loop back. firstFrame = secondFrame; continue; } } cancelTokenSource.Token.ThrowIfCancellationRequested(); if (AudioInfo.AudioFormat == StreamAudioFormat.MP3) { //skip the entire first frame/sample to get back on track await socket.LoadAsync(MP3Parser.mp3_sampleSize - MP3Parser.HeaderLength); buffer = await socket.ReadBufferAsync(MP3Parser.mp3_sampleSize - MP3Parser.HeaderLength); //streamProcessor.byteOffset += MP3Parser.mp3_sampleSize - MP3Parser.HeaderLength; obtainedProperties = AudioEncodingProperties.CreateMp3((uint)AudioInfo.SampleRate, (uint)AudioInfo.ChannelCount, AudioInfo.BitRate); } else if (AudioInfo.AudioFormat == StreamAudioFormat.AAC_ADTS) { //skip the entire first frame/sample to get back on track await socket.LoadAsync(AAC_ADTSParser.aac_adts_sampleSize - AAC_ADTSParser.HeaderLength); buffer = await socket.ReadBufferAsync(AAC_ADTSParser.aac_adts_sampleSize - AAC_ADTSParser.HeaderLength); //streamProcessor.byteOffset += AAC_ADTSParser.aac_adts_sampleSize - AAC_ADTSParser.HeaderLength; obtainedProperties = AudioEncodingProperties.CreateAacAdts((uint)AudioInfo.SampleRate, (uint)AudioInfo.ChannelCount, AudioInfo.BitRate); } else { throw new Exception("Unsupported format."); } if (serverSettings.RequestSongMetdata) { streamProcessor.metadataPos += buffer.Length; //very important or it will throw everything off! } return(obtainedProperties); }