/// <summary>Constructor - Supports opening a FLAC file</summary>
public FLACFileReader(string flacFileName)
{
m_decoderContext = IntPtr.Zero;
Console.WriteLine("FLACFileReader: " + flacFileName);
// Open the flac file for reading through a binary reader
//m_stream = File.OpenRead(flacFileName);
//m_reader = new BinaryReader(m_stream);
// Create the FLAC decoder
m_decoderContext = LibFLAC.FLAC__stream_decoder_new();
if (m_decoderContext == IntPtr.Zero)
throw new ApplicationException("FLAC: Could not initialize stream decoder!");
// Create call back delegates
m_writeCallback = new LibFLAC.Decoder_WriteCallback(FLAC_WriteCallback);
m_metadataCallback = new LibFLAC.Decoder_MetadataCallback(FLAC_MetadataCallback);
m_errorCallback = new LibFLAC.Decoder_ErrorCallback(FLAC_ErrorCallback);
// Initialize the FLAC decoder
if (LibFLAC.FLAC__stream_decoder_init_file(m_decoderContext,
flacFileName, m_writeCallback, m_metadataCallback, m_errorCallback,
IntPtr.Zero) != 0)
throw new ApplicationException("FLAC: Could not open stream for reading!");
// Process the meta-data (but not the audio frames) so we can prepare the NAudio wave format
FLACCheck(
LibFLAC.FLAC__stream_decoder_process_until_end_of_metadata(m_decoderContext),
"Could not process until end of metadata");
// Initialize NAudio wave format
m_waveFormat = new WaveInformation(m_flacStreamInfo.SampleRate, m_flacStreamInfo.BitsPerSample, m_flacStreamInfo.Channels);
Console.WriteLine("Total FLAC Samples: {0}", LibFLAC.FLAC__stream_decoder_get_total_samples(m_decoderContext));
}
private void SetupCallbacks ()
{
mReadCallback = new LibFLAC.DecoderReadCallback (this.ReadCallback);
mSeekCallback = new LibFLAC.DecoderSeekCallback (this.SeekCallback);
mTellCallback = new LibFLAC.DecoderTellCallback (this.TellCallback);
mLengthCallback = new LibFLAC.DecoderLengthCallback (this.LengthCallback);
mEOFCallback = new LibFLAC.DecoderEofCallback (this.EOFCallback);
mWriteCallback = new LibFLAC.DecoderWriteCallbackWithStatus (this.WriteCallback);
mMetadataCallback = new LibFLAC.Decoder_MetadataCallback (this.MetadataCallback);
mErrorCallback = new LibFLAC.Decoder_ErrorCallback (this.ErrorCallback);
}
