public VorbisCodec( IMediaContainer container ) { this.container = container; reader = new PrimitiveReader( container ); bitReader = new BitReader( reader ); }
public void StreamData( IMediaContainer container ) { container.ReadMetadata(); ICodec codec = container.GetAudioCodec(); chunks = codec.StreamData( container ).GetEnumerator(); for( int i = 0; i < bufferSize; i++ ) { if( chunks.MoveNext() ) { // We have to delay initialisation until we read the first chunk, // as we cannot change wave format after initialisation. if( i == 0 ) { InitWinMm( chunks.Current ); } SendNextBuffer( chunks.Current ); buffersIndex++; } } while( true ) { Thread.Sleep( 1 ); // TODO: fix playing slightly after disposed. if( reachedEnd ) break; } }
public void StreamData( IMediaContainer container ) { if( container == null ) throw new ArgumentNullException( "container" ); container.ReadMetadata(); ICodec codec = container.GetAudioCodec(); IEnumerable<AudioChunk> chunks = codec.StreamData( container ); // A buffer size of 2 is not enough for some codecs. const int bufferSize = 3; bufferIDs = new uint[bufferSize]; fixed( uint* bufferPtr = bufferIDs ) AL.GenBuffers( bufferSize, bufferPtr ); CheckError(); uint sourceU = 0; AL.GenSources( 1, out sourceU ); source = sourceU; CheckError(); // TODO: Handle the case where the file is less than 2 seconds long. IEnumerator<AudioChunk> enumerator = chunks.GetEnumerator(); for( int i = 0; i < bufferIDs.Length; i++ ) { enumerator.MoveNext(); AudioChunk chunk = enumerator.Current; if( chunk == null || chunk.Data == null ) throw new InvalidOperationException( "chunk or chunk audio data is null." ); ALFormat format = GetALFormat( chunk.Channels, chunk.BitsPerSample ); AL.BufferData( bufferIDs[i], format, chunk.Data, chunk.Data.Length, chunk.Frequency ); CheckError(); } AL.SourceQueueBuffers( source, bufferIDs.Length, bufferIDs ); CheckError(); AL.SourcePlay( source ); CheckError(); for( ; ; ) { int buffersProcessed = 0; AL.GetSource( source, ALGetSourcei.BuffersProcessed, out buffersProcessed ); CheckError(); if( buffersProcessed > 0 ) { uint bufferId = 0; AL.SourceUnqueueBuffers( source, 1, ref bufferId ); if( enumerator.MoveNext() ) { AudioChunk chunk = enumerator.Current; ALFormat format = GetALFormat( chunk.Channels, chunk.BitsPerSample ); AL.BufferData( bufferId, format, chunk.Data, chunk.Data.Length, chunk.Frequency ); CheckError(); AL.SourceQueueBuffers( source, 1, ref bufferId ); CheckError(); } else { break; } } Thread.Sleep( 1 ); } Console.WriteLine( "Ran out of chunks!" ); int state; // Query the source to find out when the last buffer stops playing. for( ; ; ) { AL.GetSource( source, ALGetSourcei.SourceState, out state ); if( (ALSourceState)state != ALSourceState.Playing ) { break; } Thread.Sleep( 1 ); } AL.DeleteBuffers( bufferIDs ); AL.DeleteSources( 1, ref source ); source = uint.MaxValue; bufferIDs = null; }