flvio

Documentation

Overview

Package flvio Created by RTT. Author: teocci@yandex.com on 2021-Oct-27

Package flvio Created by RTT. Author: teocci@yandex.com on 2021-Oct-27

Index

• Constants
• func FillAMF0Val(b []byte, _val interface{}) (n int)
• func FillFileHeader(b []byte, flags uint8) (n int)
• func FillTagHeader(b []byte, tagtype uint8, datalen int, ts int32) (n int)
• func FillTagTrailer(b []byte, datalen int) (n int)
• func LenAMF0Val(_val interface{}) (n int)
• func ParseAMF0Val(b []byte) (val interface{}, n int, err error)
• func ParseFileHeader(b []byte) (flags uint8, skip int, err error)
• func TimeToTs(tm time.Duration) int32
• func TsToTime(ts int32) time.Duration
• func WriteTag(w io.Writer, tag Tag, ts int32, b []byte) (err error)
• type AMF0ParseError
  • func (self *AMF0ParseError) Error() string
• type AMFArray
• type AMFECMAArray
• type AMFMap
• type Tag
  • func ParseTagHeader(b []byte) (tag Tag, ts int32, datalen int, err error)
  • func ReadTag(r io.Reader, b []byte) (tag Tag, ts int32, err error)
  • func (self Tag) ChannelLayout() av.ChannelLayout
  • func (self Tag) FillHeader(b []byte) (n int)
  • func (self *Tag) ParseHeader(b []byte) (n int, err error)

Constants

const (
	TAG_AUDIO      = 8
	TAG_VIDEO      = 9
	TAG_SCRIPTDATA = 18
)

const (
	SOUND_MP3                   = 2
	SOUND_NELLYMOSER_16KHZ_MONO = 4
	SOUND_NELLYMOSER_8KHZ_MONO  = 5
	SOUND_NELLYMOSER            = 6
	SOUND_ALAW                  = 7
	SOUND_MULAW                 = 8
	SOUND_AAC                   = 10
	SOUND_SPEEX                 = 11

	SOUND_5_5Khz = 0
	SOUND_11Khz  = 1
	SOUND_22Khz  = 2
	SOUND_44Khz  = 3

	SOUND_8BIT  = 0
	SOUND_16BIT = 1

	SOUND_MONO   = 0
	SOUND_STEREO = 1

	AAC_SEQHDR = 0
	AAC_RAW    = 1
)

const (
	AVC_SEQHDR = 0
	AVC_NALU   = 1
	AVC_EOS    = 2

	FRAME_KEY   = 1
	FRAME_INTER = 2

	VIDEO_H264 = 7
)

const (
	// TypeFlagsReserved UB[5]
	// TypeFlagsAudio    UB[1] Audio tags are present
	// TypeFlagsReserved UB[1] Must be 0
	// TypeFlagsVideo    UB[1] Video tags are present
	FILE_HAS_AUDIO = 0x4
	FILE_HAS_VIDEO = 0x1
)

const FileHeaderLength = 9

const MaxTagSubHeaderLength = 16

const TagHeaderLength = 11

const TagTrailerLength = 4

Functions

func FillAMF0Val

func FillAMF0Val(b []byte, _val interface{}) (n int)

func FillFileHeader

func FillFileHeader(b []byte, flags uint8) (n int)

func FillTagHeader

func FillTagHeader(b []byte, tagtype uint8, datalen int, ts int32) (n int)

func FillTagTrailer

func FillTagTrailer(b []byte, datalen int) (n int)

func LenAMF0Val

func LenAMF0Val(_val interface{}) (n int)

func ParseAMF0Val

func ParseAMF0Val(b []byte) (val interface{}, n int, err error)

func ParseFileHeader

func ParseFileHeader(b []byte) (flags uint8, skip int, err error)

func TimeToTs

func TimeToTs(tm time.Duration) int32

func TsToTime

func TsToTime(ts int32) time.Duration

func WriteTag

func WriteTag(w io.Writer, tag Tag, ts int32, b []byte) (err error)

Types

type AMF0ParseError

type AMF0ParseError struct {
	Offset  int
	Message string
	Next    *AMF0ParseError
}

func (*AMF0ParseError) Error

func (self *AMF0ParseError) Error() string

type AMFArray

type AMFArray []interface{}

type AMFECMAArray

type AMFECMAArray map[string]interface{}

type AMFMap

type AMFMap map[string]interface{}

type Tag

type Tag struct {
	Type uint8

	/*
		SoundFormat: UB[4]
		0 = Linear PCM, platform endian
		1 = ADPCM
		2 = MP3
		3 = Linear PCM, little endian
		4 = Nellymoser 16-kHz mono
		5 = Nellymoser 8-kHz mono
		6 = Nellymoser
		7 = G.711 A-law logarithmic PCM
		8 = G.711 mu-law logarithmic PCM
		9 = reserved
		10 = AAC
		11 = Speex
		14 = MP3 8-Khz
		15 = Device-specific sound
		Formats 7, 8, 14, and 15 are reserved for internal use
		AAC is supported in Flash Player 9,0,115,0 and higher.
		Speex is supported in Flash Player 10 and higher.
	*/
	SoundFormat uint8

	/*
		SoundRate: UB[2]
		Sampling rate
		0 = 5.5-kHz For AAC: always 3
		1 = 11-kHz
		2 = 22-kHz
		3 = 44-kHz
	*/
	SoundRate uint8

	/*
		SoundSize: UB[1]
		0 = snd8Bit
		1 = snd16Bit
		Size of each sample.
		This parameter only pertains to uncompressed formats.
		Compressed formats always decode to 16 bits internally
	*/
	SoundSize uint8

	/*
		SoundType: UB[1]
		0 = sndMono
		1 = sndStereo
		Mono or stereo sound For Nellymoser: always 0
		For AAC: always 1
	*/
	SoundType uint8

	/*
		0: AAC sequence header
		1: AAC raw
	*/
	AACPacketType uint8

	/*
		1: keyframe (for AVC, a seekable frame)
		2: inter frame (for AVC, a non- seekable frame)
		3: disposable inter frame (H.263 only)
		4: generated keyframe (reserved for server use only)
		5: video info/command frame
	*/
	FrameType uint8

	/*
		1: JPEG (currently unused)
		2: Sorenson H.263
		3: Screen video
		4: On2 VP6
		5: On2 VP6 with alpha channel
		6: Screen video version 2
		7: AVC
	*/
	CodecID uint8

	/*
		0: AVC sequence header
		1: AVC NALU
		2: AVC end of sequence (lower level NALU sequence ender is not required or supported)
	*/
	AVCPacketType uint8

	CompositionTime int32

	Data []byte
}

func ParseTagHeader

func ParseTagHeader(b []byte) (tag Tag, ts int32, datalen int, err error)

func ReadTag

func ReadTag(r io.Reader, b []byte) (tag Tag, ts int32, err error)

func (Tag) ChannelLayout

func (self Tag) ChannelLayout() av.ChannelLayout

func (Tag) FillHeader

func (self Tag) FillHeader(b []byte) (n int)

func (*Tag) ParseHeader

func (self *Tag) ParseHeader(b []byte) (n int, err error)