sideinfo

Documentation

Index

• type FullReader
• type SideInfo
  • func Read(source FullReader, header frameheader.FrameHeader) (*SideInfo, error)

Types

type FullReader

type FullReader interface {
	ReadFull([]byte) (int, error)
}

type SideInfo

type SideInfo struct {
	MainDataBegin    int       // 9 bits
	PrivateBits      int       // 3 bits in mono, 5 in stereo
	Scfsi            [2][4]int // 1 bit
	Part2_3Length    [2][2]int // 12 bits
	BigValues        [2][2]int // 9 bits
	GlobalGain       [2][2]int // 8 bits
	ScalefacCompress [2][2]int // 4 bits
	WinSwitchFlag    [2][2]int // 1 bit

	BlockType      [2][2]int    // 2 bits
	MixedBlockFlag [2][2]int    // 1 bit
	TableSelect    [2][2][3]int // 5 bits
	SubblockGain   [2][2][3]int // 3 bits

	Region0Count [2][2]int // 4 bits
	Region1Count [2][2]int // 3 bits

	Preflag           [2][2]int // 1 bit
	ScalefacScale     [2][2]int // 1 bit
	Count1TableSelect [2][2]int // 1 bit
	Count1            [2][2]int // Not in file, calc by huffman decoder
}

A SideInfo is MPEG1 Layer 3 Side Information. [2][2] means [gr][ch].

func Read

func Read(source FullReader, header frameheader.FrameHeader) (*SideInfo, error)