wavelet

type Coefficients struct {
	Data   []int32   // For 5/3 reversible transform
	DataF  []float64 // For 9/7 irreversible transform
	Width  int
	Height int
}

type DecompLevel struct {
	LL *Subband // Low-low subband (next level input)
	HL *Subband // High-low subband
	LH *Subband // Low-high subband
	HH *Subband // High-high subband
}

type DecompLevelF struct {
	LL *SubbandF
	HL *SubbandF
	LH *SubbandF
	HH *SubbandF
}

type Decomposition struct {
	Levels    []*DecompLevel
	NumLevels int
	Width     int // Original image width
	Height    int // Original image height
	Transform int // Transform53 or Transform97
}

type DecompositionF struct {
	Levels    []*DecompLevelF
	NumLevels int
	Width     int
	Height    int
	Transform int
}

type Subband struct {
	Type   int       // SubbandLL, HL, LH, or HH
	Level  int       // Decomposition level
	Data   []int32   // Integer coefficients
	DataF  []float64 // Float coefficients
	Width  int
	Height int
	OffX   int // X offset in full image
	OffY   int // Y offset in full image
}

type SubbandF struct {
	Type   int
	Level  int
	Data   []float64
	Width  int
	Height int
}

type Tile struct {
	X      int // Tile X index
	Y      int // Tile Y index
	Width  int // Tile width in pixels
	Height int // Tile height in pixels
	OffX   int // X offset in original image
	OffY   int // Y offset in original image
}

type TileData53 struct {
	Tile   *Tile
	Data   []int32
	Decomp *Decomposition
}

type TileData97 struct {
	Tile   *Tile
	Data   []float64
	Decomp *DecompositionF
}

type TilePartitioner struct {
	ImageWidth  int // Full image width
	ImageHeight int // Full image height
	TileWidth   int // Nominal tile width
	TileHeight  int // Nominal tile height
	TileOffsetX int // First tile X offset (typically 0)
	TileOffsetY int // First tile Y offset (typically 0)
}

type Transform53Impl struct{}

type Transform97Impl struct{}