wav

Documentation

Overview

Package wav is direct WAV filo I/O

Package wav is direct WAV filo I/O

Package wav is direct WAV filo I/O

Package wav is direct WAV filo I/O

Index

• func ConfigureOutput(s spec.AudioSpec)
• func Load(path string) (out []sample.Sample, specs *spec.AudioSpec)
• func OutputNext(numSamples spec.Tz) (err error)
• func OutputStart(length time.Duration)
• func TeardownOutput()
• type Data
• type Format
  • func FormatFromSpec(s *spec.AudioSpec) Format
• type Reader
  • func NewReader(file riff.RIFFReader) (reader *Reader, err error)
  • func (r *Reader) ReadSamples(params ...uint32) (out []sample.Sample, err error)
• type SampleFormat
• type Writer
  • func NewWriter(w io.Writer, format Format, length time.Duration) (writer *Writer)

Functions

func ConfigureOutput

func ConfigureOutput(s spec.AudioSpec)

func Load

func Load(path string) (out []sample.Sample, specs *spec.AudioSpec)

Load a WAV file into memory

func OutputNext

func OutputNext(numSamples spec.Tz) (err error)

func OutputStart

func OutputStart(length time.Duration)

func TeardownOutput

func TeardownOutput()

Types

type Data

type Data struct {
	io.Reader
	Size uint32
	// contains filtered or unexported fields
}

type Format

type Format struct {
	SampleFormat  SampleFormat
	NumChannels   uint16
	SampleRate    uint32
	ByteRate      uint32
	BlockAlign    uint16
	BitsPerSample uint16
}

the Format struct must be in the exact order according to WAV specifications, such that a binary.Read(...) can assign the WAV specified "fmt" header bytes to the correct Format properties.

func FormatFromSpec

func FormatFromSpec(s *spec.AudioSpec) Format

type Reader

type Reader struct {
	Format      *Format
	AudioFormat spec.AudioFormat
	*Data
	// contains filtered or unexported fields
}

func NewReader

func NewReader(file riff.RIFFReader) (reader *Reader, err error)

func (*Reader) ReadSamples

func (r *Reader) ReadSamples(params ...uint32) (out []sample.Sample, err error)

type SampleFormat

type SampleFormat uint16

const (
	AudioFormatLinearPCM SampleFormat = 0x0001
	AudioFormatIEEEFloat SampleFormat = 0x0003
)

type Writer

type Writer struct {
	io.Writer
	Format *Format
}

func NewWriter

func NewWriter(w io.Writer, format Format, length time.Duration) (writer *Writer)