ac3parser

Documentation

Index

• Variables
• func IsValidAC3FrameHeader(header []byte) bool
• func ParseAC3(frame []byte) (spf_ int, framelen_ int, samplerate_ int)
• type CodecData
  • func NewCodecDataAC3() (self CodecData)
  • func (self CodecData) ChannelLayout() av.ChannelLayout
  • func (self CodecData) PacketDuration(data []byte) (dur time.Duration, err error)
  • func (self CodecData) SampleFormat() av.SampleFormat
  • func (self CodecData) SampleRate() int
  • func (self CodecData) Type() av.CodecType

Variables

var (
	A52HalfRate = []int{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3}

	A52BitRates = []int{
		32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
		192, 224, 256, 320, 384, 448, 512, 576, 640,
	}

	/* Only store frame sizes for 44.1KHz - others are simply multiples
	   of the bitrate */
	A52FrameSizes441 = []int{
		69, 70, 87, 88, 104, 105, 121, 122, 139, 140, 174, 175, 208, 209,
		243, 244, 278, 279, 348, 349, 417, 418, 487, 488, 557, 558, 696, 697,
		835, 836, 975, 976, 1114, 1115, 1253, 1254, 1393, 1394,
	}
)

Functions

func IsValidAC3FrameHeader

func IsValidAC3FrameHeader(header []byte) bool

func ParseAC3

func ParseAC3(frame []byte) (spf_ int, framelen_ int, samplerate_ int)

Types

type CodecData

type CodecData struct {
	CodecType_     av.CodecType
	SampleRate_    int
	SampleFormat_  av.SampleFormat
	ChannelLayout_ av.ChannelLayout
}

func NewCodecDataAC3

func NewCodecDataAC3() (self CodecData)

func (CodecData) ChannelLayout

func (self CodecData) ChannelLayout() av.ChannelLayout

func (CodecData) PacketDuration

func (self CodecData) PacketDuration(data []byte) (dur time.Duration, err error)

func (CodecData) SampleFormat

func (self CodecData) SampleFormat() av.SampleFormat

func (CodecData) SampleRate

func (self CodecData) SampleRate() int

func (CodecData) Type

func (self CodecData) Type() av.CodecType