ac3

Documentation

Overview

Package ac3 contains utilities to work with the AC-3 codec.

Index

• Constants
• type BSI
  • func (b BSI) ChannelCount() int
  • func (b *BSI) Unmarshal(buf []byte) error
• type SyncInfo
  • func (s SyncInfo) FrameSize() int
  • func (s SyncInfo) SampleRate() int
  • func (s *SyncInfo) Unmarshal(frame []byte) error

Constants

const (
	// SamplesPerFrame is the number of samples contained inside a frame.
	SamplesPerFrame = 1536
)

Types

type BSI

type BSI struct {
	Bsid  uint8
	Bsmod uint8
	Acmod uint8
	LfeOn bool
}

BSI is a Bit Stream Information. Specification: ATSC, AC-3, Table 5.2

func (BSI) ChannelCount

func (b BSI) ChannelCount() int

ChannelCount returns the channel count.

func (*BSI) Unmarshal

func (b *BSI) Unmarshal(buf []byte) error

Unmarshal decodes a BSI.

type SyncInfo

type SyncInfo struct {
	Fscod      uint8
	Frmsizecod uint8
}

SyncInfo is a synchronization information. Specification: ATSC, AC-3, Table 5.1

func (SyncInfo) FrameSize

func (s SyncInfo) FrameSize() int

FrameSize returns the frame size.

func (SyncInfo) SampleRate

func (s SyncInfo) SampleRate() int

SampleRate returns the frame sample rate.

func (*SyncInfo) Unmarshal

func (s *SyncInfo) Unmarshal(frame []byte) error

Unmarshal decodes a SyncInfo.