h264

package

v1.8.5 Latest Latest Go to latest Published: Jan 1, 2024 License: MIT Imports: 11 Imported by: 1

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Repository

github.com/AlexxIT/go2rtc

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Open Source Insights

README ¶

H264

Payloader code taken from pion library. And changed to AVC packets support.

Useful Links

Documentation ¶

Overview ¶

Package h264 - AVCC format related functions

Package h264 - MPEG4 format related functions

Index ¶

Constants
func AVCCToCodec(avcc []byte) *core.Codec
func ConfigToCodec(conf []byte) *core.Codec
func DecodeAnnexB(b []byte) []byte
func DecodeConfig(conf []byte) (profile []byte, sps []byte, pps []byte)
func DecodeStream(annexb []byte) ([]byte, int)deprecated
func EmitNalus(nals []byte, isAVC bool, emit func([]byte))
func EncodeConfig(sps, pps []byte) []byte
func GetFmtpLine(avc []byte) string
func GetParameterSet(fmtp string) (sps, pps []byte)
func GetProfileLevelID(fmtp string) string
func IndexFrom(b []byte, sep []byte, from int) int
func IsKeyframe(b []byte) bool
func Join(ps, iframe []byte) []byte
func JoinNALU(nalus ...[]byte) (avcc []byte)
func NALUType(b []byte) byte
func NALUTypes(avcc []byte) []byte
func RTPDepay(codec *core.Codec, handler core.HandlerFunc) core.HandlerFunc
func RTPPay(mtu uint16, handler core.HandlerFunc) core.HandlerFunc
func RepairAVCC(codec *core.Codec, handler core.HandlerFunc) core.HandlerFunc
func SplitNALU(avcc []byte) [][]byte
type Payloader
- func (p *Payloader) Payload(mtu uint16, payload []byte) [][]byte
type SPS
- func DecodeSPS(sps []byte) *SPS
- func (s *SPS) Height() uint16
- func (s *SPS) Width() uint16

Constants ¶

View Source

const (
	NALUTypePFrame = 1 // Coded slice of a non-IDR picture
	NALUTypeIFrame = 5 // Coded slice of an IDR picture
	NALUTypeSEI    = 6 // Supplemental enhancement information (SEI)
	NALUTypeSPS    = 7 // Sequence parameter set
	NALUTypePPS    = 8 // Picture parameter set
	NALUTypeAUD    = 9 // Access unit delimiter
)

View Source

const (
	ProfileBaseline    = 0x42
	ProfileMain        = 0x4D
	ProfileHigh        = 0x64
	CapabilityBaseline = 0xE0
	CapabilityMain     = 0x40
)

https://developers.google.com/cast/docs/media

View Source

const PSMaxSize = 128 // the biggest SPS I've seen is 48 (EZVIZ CS-CV210)

View Source

const RTPPacketVersionAVC = 0

Variables ¶

This section is empty.

Functions ¶

func AVCCToCodec ¶ added in v1.7.0

func AVCCToCodec(avcc []byte) *core.Codec

func ConfigToCodec ¶ added in v1.7.0

func ConfigToCodec(conf []byte) *core.Codec

func DecodeAnnexB ¶ added in v1.3.0

func DecodeAnnexB(b []byte) []byte

DecodeAnnexB - convert AnnexB to AVC format support unknown separator size

func DecodeConfig ¶ added in v1.7.0

func DecodeConfig(conf []byte) (profile []byte, sps []byte, pps []byte)

DecodeConfig - extract profile, SPS and PPS from MPEG4 config

func DecodeStream deprecated added in v1.3.0

func DecodeStream(annexb []byte) ([]byte, int)

Deprecated: DecodeStream - find and return first AU in AVC format useful for processing live streams with unknown separator size

func EmitNalus ¶ added in v1.2.0

func EmitNalus(nals []byte, isAVC bool, emit func([]byte))

func EncodeConfig ¶ added in v1.7.0

func EncodeConfig(sps, pps []byte) []byte

func GetFmtpLine ¶ added in v1.2.0

func GetFmtpLine(avc []byte) string

GetFmtpLine from SPS+PPS+IFrame in AVC format

func GetParameterSet ¶

func GetParameterSet(fmtp string) (sps, pps []byte)

func GetProfileLevelID ¶

func GetProfileLevelID(fmtp string) string

GetProfileLevelID - get profile from fmtp line Some devices won't play video with high level, so limit max profile and max level. And return some profile even if fmtp line is empty.

func IndexFrom ¶ added in v1.3.0

func IndexFrom(b []byte, sep []byte, from int) int

func IsKeyframe ¶

func IsKeyframe(b []byte) bool

IsKeyframe - check if any NALU in one AU is Keyframe

func Join ¶

func Join(ps, iframe []byte) []byte

func JoinNALU ¶ added in v1.7.0

func JoinNALU(nalus ...[]byte) (avcc []byte)

func NALUType ¶

func NALUType(b []byte) byte

func NALUTypes ¶ added in v1.7.0

func NALUTypes(avcc []byte) []byte

func RTPDepay ¶

func RTPDepay(codec *core.Codec, handler core.HandlerFunc) core.HandlerFunc

func RTPPay ¶

func RTPPay(mtu uint16, handler core.HandlerFunc) core.HandlerFunc

func RepairAVCC ¶ added in v1.7.0

func RepairAVCC(codec *core.Codec, handler core.HandlerFunc) core.HandlerFunc

func SplitNALU ¶ added in v1.7.0

func SplitNALU(avcc []byte) [][]byte

Types ¶

type Payloader ¶

type Payloader struct {
	IsAVC bool
	// contains filtered or unexported fields
}

Payloader payloads H264 packets

func (*Payloader) Payload ¶

func (p *Payloader) Payload(mtu uint16, payload []byte) [][]byte

Payload fragments a H264 packet across one or more byte arrays

type SPS ¶ added in v1.7.0

type SPS struct {
	// contains filtered or unexported fields
}

func DecodeSPS ¶ added in v1.7.0

func DecodeSPS(sps []byte) *SPS

func (*SPS) Height ¶ added in v1.7.0

func (s *SPS) Height() uint16

func (*SPS) Width ¶ added in v1.7.0

func (s *SPS) Width() uint16

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
annexb Package annexb - universal for H264 and H265	Package annexb - universal for H264 and H265

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