jpm

type Box struct {
	Type     uint32 // Box type (4-byte identifier)
	Length   uint64 // Box length including header
	Data     []byte // Box content
	Children []*Box // For superboxes
	Offset   int64  // Byte offset in file
}

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

type CompositionResult struct {
	Width      int     // Result width in pixels
	Height     int     // Result height in pixels
	Pixels     []uint8 // Composed pixel data (RGBA format)
	Components int     // Number of components (typically 4 for RGBA)
}

type CompoundHeader struct {
	Width          uint32 // Overall document width
	Height         uint32 // Overall document height
	NumPages       uint32 // Number of pages
	DefaultColorID uint8  // Default color space identifier
	DefaultBPC     uint8  // Default bits per component
}

type JPMFile struct {
	Brand        [4]byte         // File brand (jpm or jp2)
	MinorVersion uint32          // Minor version
	Compat       [][4]byte       // Compatibility list
	Header       *CompoundHeader // Compound image header
	Pages        []*Page         // Pages in document
	Codestreams  [][]byte        // Embedded codestreams
}

type LayoutObject struct {
	ID            uint32 // Object identifier
	Type          uint8  // Object type (raster, mask, text, graphic)
	OffsetX       int32  // X position on page
	OffsetY       int32  // Y position on page
	Width         uint32 // Object width
	Height        uint32 // Object height
	Opacity       uint8  // Object opacity (0-255)
	CompositeOp   uint8  // Compositing operation
	CodestreamIdx int    // Index to codestream data (-1 if none)
	MaskIdx       int    // Index to mask object (-1 if none)
	ZOrder        int    // Z-order for compositing (higher = on top)
	Data          []byte // Raw object data (if inline)
}

type Mask struct {
	ID       uint32 // Mask identifier
	Type     uint8  // Mask type (hard or soft)
	Width    uint32 // Mask width
	Height   uint32 // Mask height
	Data     []byte // Mask bitmap data
	Inverted bool   // If true, mask is inverted
}

type Page struct {
	Index           int             // Page index (0-based)
	Width           uint32          // Page width in pixels
	Height          uint32          // Page height in pixels
	LayoutObjects   []*LayoutObject // Layout objects on this page
	BackgroundColor []uint8         // Background color (RGB or RGBA)
}

type PageInfo struct {
	Index       int
	Width       uint32
	Height      uint32
	ObjectCount int
	HasMasks    bool
	HasRasters  bool
}

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