avc

Documentation

Index

• Constants
• Variables
• func CalcNaluType(nalu []byte) uint8
• func CalcNaluTypeReadable(nalu []byte) string
• func CalcSliceType(nalu []byte) uint8
• func CalcSliceTypeReadable(nalu []byte) string
• func CaptureAVC(w io.Writer, payload []byte) error
• func ParseAVCSeqHeader(payload []byte) (sps, pps []byte, err error)

Constants

const (
	NaluUnitTypeSlice    uint8 = 1
	NaluUnitTypeIDRSlice uint8 = 5
	NaluUnitTypeSEI      uint8 = 6
	NaluUintTypeSPS      uint8 = 7
	NaluUintTypePPS      uint8 = 8
	NaluUintTypeAUD      uint8 = 9
)

const (
	SliceTypeP  uint8 = 0
	SliceTypeB  uint8 = 1
	SliceTypeI  uint8 = 2
	SliceTypeSP uint8 = 3 // TODO chef
	SliceTypeSI uint8 = 4 // TODO chef
)

Variables

var ErrAVC = errors.New("lal.avc: fxxk")

var NaluStartCode = []byte{0x0, 0x0, 0x0, 0x1}

var NaluUintTypeMapping = map[uint8]string{
	1: "SLICE",
	5: "IDR",
	6: "SEI",
	7: "SPS",
	8: "PPS",
	9: "AUD",
}

var SliceTypeMapping = map[uint8]string{
	0: "P",
	1: "B",
	2: "I",
	3: "SP",
	4: "SI",
	5: "P",
	6: "B",
	7: "I",
	8: "SP",
	9: "SI",
}

Functions

func CalcNaluType

func CalcNaluType(nalu []byte) uint8

func CalcNaluTypeReadable

func CalcNaluTypeReadable(nalu []byte) string

func CalcSliceType

func CalcSliceType(nalu []byte) uint8

TODO chef: 考虑将error返回给上层

func CalcSliceTypeReadable

func CalcSliceTypeReadable(nalu []byte) string

func CaptureAVC

func CaptureAVC(w io.Writer, payload []byte) error

将rtmp avc数据转换成avc裸流 @param <payload> rtmp message的payload部分 或者 flv tag的payload部分

func ParseAVCSeqHeader

func ParseAVCSeqHeader(payload []byte) (sps, pps []byte, err error)

TODO chef: 参考 hls session的代码，重构这个函数 从 rtmp avc sequence header 中解析 sps 和 pps @param <payload> rtmp message的payload部分 或者 flv tag的payload部分