public AudioDecoder(DecoderSettings settings, string path, Stream IO)
{
m_settings = settings;
_path = path;
m_stream = (IO != null) ? IO : new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
m_StreamIO = new StreamIO(m_stream);
int errorCode = 0;
pAPEDecompress = MACLibDll.c_APEDecompress_CreateEx(m_StreamIO.CIO, out errorCode);
if (pAPEDecompress == null)
{
throw new Exception("Unable to initialize the decoder: " + errorCode);
}
pcm = new AudioPCMConfig(
MACLibDll.c_APEDecompress_GetInfo(pAPEDecompress, APE_DECOMPRESS_FIELDS.APE_INFO_BITS_PER_SAMPLE, 0, 0).ToInt32(),
MACLibDll.c_APEDecompress_GetInfo(pAPEDecompress, APE_DECOMPRESS_FIELDS.APE_INFO_CHANNELS, 0, 0).ToInt32(),
MACLibDll.c_APEDecompress_GetInfo(pAPEDecompress, APE_DECOMPRESS_FIELDS.APE_INFO_SAMPLE_RATE, 0, 0).ToInt32(),
(AudioPCMConfig.SpeakerConfig) 0);
_samplesBuffer = new byte[16384 * pcm.BlockAlign];
_sampleCount = MACLibDll.c_APEDecompress_GetInfo(pAPEDecompress, APE_DECOMPRESS_FIELDS.APE_DECOMPRESS_TOTAL_BLOCKS, 0, 0).ToInt64();
_sampleOffset = 0;
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (m_StreamIO != null)
{
m_StreamIO.Dispose();
m_StreamIO = null;
}
if (m_stream != null)
{
m_stream.Dispose();
m_stream = null;
}
if (_samplesBuffer != null)
{
_samplesBuffer = null;
}
}
if (pAPEDecompress != null)
{
MACLibDll.c_APEDecompress_Destroy(pAPEDecompress);
}
pAPEDecompress = IntPtr.Zero;
}
public AudioEncoder(EncoderSettings settings, string path, Stream output = null)
{
m_settings = settings;
m_path = path;
m_stream = output;
m_settings = settings;
m_streamGiven = output != null;
m_initialized = false;
m_finalSampleCount = 0;
m_samplesWritten = 0;
if (m_settings.PCM.ChannelCount != 1 && m_settings.PCM.ChannelCount != 2)
{
throw new Exception("Only stereo and mono audio formats are allowed.");
}
if (m_settings.PCM.BitsPerSample != 16 && m_settings.PCM.BitsPerSample != 24)
{
throw new Exception("bits per sample must be 16 or 24");
}
int nRetVal;
pAPECompress = MACLibDll.c_APECompress_Create(out nRetVal);
if (pAPECompress == null)
{
throw new Exception("Unable to open APE compressor.");
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
m_stream = null;
_readBuffer = null;
}
MACLibDll.c_APECIO_Destroy(m_hCIO);
m_hCIO = IntPtr.Zero;
}
public StreamIO(Stream stream)
{
m_stream = stream;
// We keep the references to those callbacks to
// prevent them from being garbage collected.
m_read_bytes = ReadCallback;
m_write_bytes = WriteCallback;
m_get_pos = TellCallback;
m_get_size = GetSizeCallback;
m_seek = SeekRelativeCallback;
m_hCIO = MACLibDll.c_APECIO_Create(null, m_read_bytes, m_write_bytes, m_seek, m_get_pos, m_get_size);
}
