Exemplo n.º 1
0
        public AudioDecoder(DecoderSettings settings, string path, Stream IO, Stream IO_WVC)
        {
            m_settings       = settings;
            m_read_bytes     = ReadCallback;
            m_get_pos        = TellCallback;
            m_set_pos_abs    = SeekCallback;
            m_set_pos_rel    = SeekRelativeCallback;
            m_push_back_byte = PushBackCallback;
            m_get_length     = LengthCallback;
            m_can_seek       = CanSeekCallback;

            m_ioReader                 = (WavpackStreamReader64 *)Marshal.AllocHGlobal(sizeof(WavpackStreamReader64)).ToPointer();
            m_ioReader->read_bytes     = Marshal.GetFunctionPointerForDelegate(m_read_bytes);
            m_ioReader->write_bytes    = IntPtr.Zero;
            m_ioReader->get_pos        = Marshal.GetFunctionPointerForDelegate(m_get_pos);
            m_ioReader->set_pos_abs    = Marshal.GetFunctionPointerForDelegate(m_set_pos_abs);
            m_ioReader->set_pos_rel    = Marshal.GetFunctionPointerForDelegate(m_set_pos_rel);
            m_ioReader->push_back_byte = Marshal.GetFunctionPointerForDelegate(m_push_back_byte);
            m_ioReader->get_length     = Marshal.GetFunctionPointerForDelegate(m_get_length);
            m_ioReader->can_seek       = Marshal.GetFunctionPointerForDelegate(m_can_seek);
            m_ioReader->truncate_here  = IntPtr.Zero;
            m_ioReader->close          = IntPtr.Zero;

            _IO_ungetc = _IO_WVC_ungetc = -1;

            _path = path;

            _IO     = (IO != null) ? IO : new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
            _IO_WVC = (IO != null) ? IO_WVC : File.Exists(path + "c") ? new FileStream(path + "c", FileMode.Open, FileAccess.Read, FileShare.Read) : null;

            string errorMessage;

            _wpc = wavpackdll.WavpackOpenFileInputEx64(m_ioReader, IO_ID_WV, IO_ID_WVC, out errorMessage, OpenFlags.OPEN_WVC, 0);
            if (_wpc == null)
            {
                throw new Exception("Unable to initialize the decoder: " + errorMessage);
            }

            pcm = new AudioPCMConfig(
                wavpackdll.WavpackGetBitsPerSample(_wpc),
                wavpackdll.WavpackGetNumChannels(_wpc),
                (int)wavpackdll.WavpackGetSampleRate(_wpc),
                (AudioPCMConfig.SpeakerConfig)wavpackdll.WavpackGetChannelMask(_wpc));
            _sampleCount  = wavpackdll.WavpackGetNumSamples64(_wpc);
            _sampleOffset = 0;
        }
Exemplo n.º 2
0
 public AudioDecoder(DecoderSettings settings, string path, Stream IO = null)
     : this(settings, path, IO, null)
 {
 }