wave

type DataReader interface {
	io.Reader
	io.ReaderAt
}

type DataReaderChunk struct {
	ID   []byte     // 'data'
	Size uint32     // 音データの長さ * channel
	Data DataReader // 実際のデータ
}

type DataWriterChunk struct {
	ID   []byte
	Size uint32
	Data *bytes.Buffer
}

type FmtChunk struct {
	ID   []byte // 'fmt '
	Size uint32 // 16
	Data *WavFmtChunkData
}

type Reader struct {
	RiffChunk *RiffChunk
	FmtChunk  *FmtChunk
	DataChunk *DataReaderChunk

	NumSamples    uint32
	ReadSampleNum uint32
	SampleTime    int
	// contains filtered or unexported fields
}

type RiffChunk struct {
	ID         []byte // 'RIFF'
	Size       uint32 // 36bytes + data_chunk_size or whole_file_size - 'RIFF'+ChunkSize (8byte)
	FormatType []byte // 'WAVE'
}

type WavFmtChunkData struct {
	WaveFormatType uint16 // PCM は 1
	Channel        uint16 // monoral or streo
	SamplesPerSec  uint32 // サンプリング周波数 44100
	BytesPerSec    uint32 // 1秒間に必要なbyte数
	BlockSize      uint16 // 量子化精度 * チャンネル数
	BitsPerSamples uint16 // 量子化精度
}

type WaveReader interface {
	io.Reader
	io.Seeker
	io.ReaderAt
}

type Writer struct {
	// contains filtered or unexported fields
}

type WriterParam struct {
	Out           io.WriteCloser
	Channel       int
	SampleRate    int
	BitsPerSample int
}