// read will decode the file
func (decoder *flacDecoder) read() error {
d, err := flac.NewDecoder(decoder.src)
if err != nil {
return err
}
decoder.channels = int16(d.NChannels)
decoder.sampleRate = int32(d.SampleRate)
decoder.bitDepth = int16(d.BitsPerSample)
decoder.format = getFormat(decoder.channels, decoder.bitDepth)
decoder.dataSize = int32(d.TotalSamples * int64(d.NChannels) * int64(d.BitsPerSample/8))
data := make([]byte, 0, decoder.dataSize)
for {
frame, err := d.Next()
if err == io.EOF {
break
} else if err != nil {
return err
}
data = append(data, frame...)
}
decoder.src = bytes.NewReader(data)
decoder.duration = decoder.ByteOffsetToDur(int32(len(data)) / formatBytes[decoder.GetFormat()])
return err
}
func NewDecoder(r io.Reader) (*Decoder, error) {
d, err := flac.NewDecoder(r)
if err != nil {
return nil, err
}
return &Decoder{MetaData: &d.MetaData, d: d}, nil
}