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type Avc1Box ¶

type Avc1Box struct {
	*Box
	Version byte
}

Avc1Box defines the avc1 box structure.

type Box ¶

type Box struct {
	Name        string
	Size, Start int64
	Reader      *Mp4Reader
}

Box defines an Atom Box structure.

func (b *Box) ReadBoxData() []byte

type EdtsBox ¶

type EdtsBox struct {
	*Box
	Elst *ElstBox
}

EdtsBox - Edit Box Box Type: edts Container: Track Box (trak) Mandatory: No Quantity: Zero or one

type ElstBox ¶

type ElstBox struct {
	*Box
	Version    uint32 // Version of this box.
	EntryCount uint32 // Integer that gives the number of entries.
	Entries    []elstEntry
}

ElstBox - Edit List Box Box Type: elst Container: Edit Box (edts) Mandatory: No Quantity: Zero or one

type Fixed16 ¶

type Fixed16 uint16

Fixed16 is an 8.8 Fixed Point Decimal notation

func (f Fixed16) String() string

type Fixed32 ¶

type Fixed32 uint32

Fixed32 is a 16.16 Fixed Point Decimal notation

type FtypBox ¶

type FtypBox struct {
	*Box
	MajorBrand       string   // Brand identifer.
	MinorVersion     uint32   // Informative integer for the minor version of the major brand.
	CompatibleBrands []string // A list, to the end of the box, of brands.
}

FtypBox - File Type Box Box Type: ftyp Container: File Mandatory: Yes Quantity: Exactly one

type HdlrBox ¶

type HdlrBox struct {
	*Box
	Version byte
	Flags   uint32
	Handler string
	Name    string
}

HdlrBox - Handler Reference Box Box Type: hdlr Container: Media Box (mdia) or Meta Box (meta) Mandatory: Yes Quantity: Exactly one

type HmhdBox ¶

type HmhdBox struct {
	*Box
	Version    byte
	MaxPDUSize uint16
	AvgPDUSize uint16
	MaxBitrate uint32
	AvgBitrate uint32
}

HmhdBox - Hint Media Header Box Box Type: hmhd Container: Media Information Box (minf). Mandatory: Yes Quantity: Exactly one specific media header shall be present.

Contains general information, independent of the protocol, for hint tracks.

type MdatBox ¶

type MdatBox struct {
	*Box
}

MdatBox - Media Data Box Box Type: mdat Container: File Mandatory: No Quantity: Any number.

A container box which can hold the actual media data for a presentation (mdat).

type MdhdBox ¶

type MdhdBox struct {
	*Box
	Version          byte
	Flags            uint32
	CreationTime     uint32
	ModificationTime uint32
	Timescale        uint32
	Duration         uint32
	Language         uint16
	LanguageString   string
}

MdhdBox - Media Header Box Box Type: mdhd Container: Media Box (mdia) Mandatory: Yes Quantity: Any number.

The media header declares overall information that is media-independent, and relevant to characteristics of the media in a track.

type MdiaBox ¶

type MdiaBox struct {
	*Box
	Hdlr *HdlrBox
	Mdhd *MdhdBox
	Minf *MinfBox
}

MdiaBox - Media Box Box Type: mdia Container: Track Box (trak) Mandatory: Yes Quantity: Exactly one. The media declaration container contains all the objects that declare information about the media data within a track.

type MinfBox ¶

type MinfBox struct {
	*Box
	Vmhd *VmhdBox
	// Dinf *DinfBox
	Stbl *StblBox
	Hmhd *HmhdBox
}

MinfBox - Media Information Box Box Type: minf Container: Media Box (mdia) Mandatory: Yes Quantity: Exactly one.

This box contains all the objects that declare characteristics information of the media in the track.

type MoovBox ¶

type MoovBox struct {
	*Box
	Mvhd  *MvhdBox
	Traks []*TrakBox

	IsFragmented bool // check for mvex box exists
}

MoovBox - Movie Box Box Type: moov Container: File Mandatory: Yes Quantity: Exactly one.

The metadata for a presentation is stored in the single Movie Box which occurs at the top-level of a file. Normally this box is close to the beginning or end of the file, though this is not required.

type Mp4Reader ¶

type Mp4Reader struct {
	Reader io.ReaderAt
	Ftyp   *FtypBox
	Moov   *MoovBox
	Mdat   *MdatBox
	Uuids  []*UuidBox
	Size   int64

	IsFragmented bool
}

Mp4Reader defines an mp4 reader structure.

func (m *Mp4Reader) Parse() error

func (m *Mp4Reader) ReadBoxAt(offset int64) (boxSize uint32, boxType string)

func (m *Mp4Reader) ReadBytesAt(n int64, offset int64) (word []byte)

type MvhdBox ¶

type MvhdBox struct {
	*Box
	Flags            uint32
	Version          uint8
	CreationTime     uint32
	ModificationTime uint32
	Timescale        uint32
	Duration         uint32
	Rate             Fixed32
	Volume           Fixed16
}

MvhdBox - Movie Header Box Box Type: mvhd Container: Movie Box (moov) Mandatory: Yes Quantity: Exactly one.

This box defines overall information which is media-independent, and relevant to the entire presentationconsidered as a whole.

type StblBox ¶

type StblBox struct {
	*Box
	Stts *SttsBox
	Stsd *StsdBox
}

StblBox - Sample Table Box Box Type: stbl Container: Media Information Box (minf) Mandatory: Yes Quantity: Exactly one.

type StsdBox ¶

type StsdBox struct {
	*Box
	Version byte
	Flags   uint32
	Avc1    *Avc1Box
}

StsdBox - Sample Description Box Box Type: stsd Container: Sample Table Box (stbl) Mandatory: Yes Quantity: Exactly one.

type SttsBox ¶

type SttsBox struct {
	*Box
	Version      byte
	Flags        uint32
	EntryCount   uint32
	SampleCounts []uint32
	SampleDeltas []uint32
}

SttsBox - Decoding Time to Sample Box Box Type: stts Container: Sample Table Box (stbl) Mandatory: Yes Quantity: Exactly one.

type TkhdBox ¶

type TkhdBox struct {
	*Box
	Version          byte
	Flags            uint32
	CreationTime     uint32
	ModificationTime uint32
	TrackID          uint32
	Duration         uint32
	Layer            uint16
	AlternateGroup   uint16
	Volume           Fixed16
	Matrix           []byte
	Width, Height    Fixed32
}

TkhdBox - Track Header Box Box Type: tkhd Container: Track Box (trak) Mandatory: Yes Quantity: Exactly one.

func (b *TkhdBox) GetHeight() Fixed32

func (b *TkhdBox) GetWidth() Fixed32

type TrakBox ¶

type TrakBox struct {
	*Box

	Tkhd *TkhdBox
	Mdia *MdiaBox
	Edts *EdtsBox
}

TrakBox - Track Box Box Type: tkhd Container: Movie Box (moov) Mandatory: Yes Quantity: One or more.

type UuidBox ¶

type UuidBox struct {
	*Box
	Uuid []byte
	Data []byte
}

UuidBox - Uuid Box Box Type: uuid

type VmhdBox ¶

type VmhdBox struct {
	*Box
	Version      byte
	Flags        uint32
	GraphicsMode uint16
	OpColor      uint16
}

VmhdBox - Video Media Header Box Box Type: vmhd Container: Media Information Box (minf) Mandatory: Yes Quantity: Exactly one specific media header shall be present.