h264parser

Documentation

Overview

* @Description: * @Author: dotwoo@gmail.com * @Github: https://github.com/dotwoo * @Date: 2021-07-29 16:46:02 * @FilePath: /joy4/codec/h264parser/parser.go

Index

• Constants
• Variables
• func CheckNALUsType(b []byte) (typ int)
• func IsDataNALU(b []byte) bool
• func SplitNALUs(b []byte) (nalus [][]byte, typ int)
• type AVCDecoderConfRecord
  • func (self AVCDecoderConfRecord) Len() (n int)
  • func (self AVCDecoderConfRecord) Marshal(b []byte) (n int)
  • func (self *AVCDecoderConfRecord) Unmarshal(b []byte) (n int, err error)
• type CodecData
  • func NewCodecDataFromAVCDecoderConfRecord(record []byte) (self CodecData, err error)
  • func NewCodecDataFromSPSAndPPS(sps, pps []byte) (self CodecData, err error)
  • func (self CodecData) AVCDecoderConfRecordBytes() []byte
  • func (self CodecData) Height() int
  • func (self CodecData) PPS() []byte
  • func (self CodecData) SPS() []byte
  • func (self CodecData) Type() av.CodecType
  • func (self CodecData) Width() int
• type SPSInfo
  • func ParseSPS(data []byte) (self SPSInfo, err error)
• type SliceType
  • func ParseSliceHeaderFromNALU(packet []byte) (sliceType SliceType, err error)
  • func (self SliceType) String() string

Constants

const (
	NALU_SEI = 6
	NALU_PPS = 7
	NALU_SPS = 8
	NALU_AUD = 9
)

const (
	NALU_RAW = iota
	NALU_AVCC
	NALU_ANNEXB
)

const (
	SLICE_P = iota + 1
	SLICE_B
	SLICE_I
)

Variables

var AUDBytes = []byte{0, 0, 0, 1, 0x9, 0xf0, 0, 0, 0, 1} // AUD

var ErrDecconfInvalid = fmt.Errorf("h264parser: AVCDecoderConfRecord invalid")

var StartCodeBytes = []byte{0, 0, 1}

Functions

func CheckNALUsType

func CheckNALUsType(b []byte) (typ int)

func IsDataNALU

func IsDataNALU(b []byte) bool

func SplitNALUs

func SplitNALUs(b []byte) (nalus [][]byte, typ int)

Types

type AVCDecoderConfRecord

type AVCDecoderConfRecord struct {
	AVCProfileIndication uint8
	ProfileCompatibility uint8
	AVCLevelIndication   uint8
	LengthSizeMinusOne   uint8
	SPS                  [][]byte
	PPS                  [][]byte
}

func (AVCDecoderConfRecord) Len

func (self AVCDecoderConfRecord) Len() (n int)

func (AVCDecoderConfRecord) Marshal

func (self AVCDecoderConfRecord) Marshal(b []byte) (n int)

func (*AVCDecoderConfRecord) Unmarshal

func (self *AVCDecoderConfRecord) Unmarshal(b []byte) (n int, err error)

type CodecData

type CodecData struct {
	Record     []byte
	RecordInfo AVCDecoderConfRecord
	SPSInfo    SPSInfo
}

func NewCodecDataFromAVCDecoderConfRecord

func NewCodecDataFromAVCDecoderConfRecord(record []byte) (self CodecData, err error)

func NewCodecDataFromSPSAndPPS

func NewCodecDataFromSPSAndPPS(sps, pps []byte) (self CodecData, err error)

func (CodecData) AVCDecoderConfRecordBytes

func (self CodecData) AVCDecoderConfRecordBytes() []byte

func (CodecData) Height

func (self CodecData) Height() int

func (CodecData) PPS

func (self CodecData) PPS() []byte

func (CodecData) SPS

func (self CodecData) SPS() []byte

func (CodecData) Type

func (self CodecData) Type() av.CodecType

func (CodecData) Width

func (self CodecData) Width() int

type SPSInfo

type SPSInfo struct {
	ProfileIdc uint
	LevelIdc   uint

	MbWidth  uint
	MbHeight uint

	CropLeft   uint
	CropRight  uint
	CropTop    uint
	CropBottom uint

	Width  uint
	Height uint
}

func ParseSPS

func ParseSPS(data []byte) (self SPSInfo, err error)

type SliceType

type SliceType uint

func ParseSliceHeaderFromNALU

func ParseSliceHeaderFromNALU(packet []byte) (sliceType SliceType, err error)

func (SliceType) String

func (self SliceType) String() string