h264parser

package

v0.0.8 Latest Latest Go to latest Published: Apr 1, 2019 License: MIT Imports: 6 Imported by: 0

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Repository

github.com/gabek/joy4

Documentation ¶

Index ¶

Constants
Variables
func CheckNALUsType(b []byte) (typ int)
func IsDataNALU(b []byte) bool
func PktToCodecData(pkt av.Packet) (h264CodecData av.CodecData, err error)
func SplitNALUs(b []byte) (nalus [][]byte, typ int)
type AVCDecoderConfRecord
type CodecData
- func NewCodecDataFromAVCDecoderConfRecord(record []byte) (self CodecData, err error)
- func NewCodecDataFromSPSAndPPS(sps, pps []byte) (self CodecData, err error)
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 ¶

View Source

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

View Source

const (
	NALU_RAW = iota
	NALU_AVCC
	NALU_ANNEXB
)

View Source

const (
	SLICE_P = iota + 1
	SLICE_B
	SLICE_I
)

Variables ¶

View Source

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

View Source

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

View Source

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

Functions ¶

func CheckNALUsType ¶

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

func IsDataNALU ¶

func IsDataNALU(b []byte) bool

func PktToCodecData ¶

func PktToCodecData(pkt av.Packet) (h264CodecData av.CodecData, err error)

PktToCodecData parses NAL units to find SPS and PPS, and derive codec data from them. h264CodecData can be nil if the SPS and/or PPS is not found

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) Framerate ¶

func (self CodecData) Framerate() (int, int)

func (CodecData) Height ¶

func (self CodecData) Height() int

func (CodecData) PPS ¶

func (self CodecData) PPS() []byte

func (CodecData) PacketDuration ¶

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

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

	FpsNum uint
	FpsDen 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

Source Files ¶

View all Source files

parser.go

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