Quick Reference > Data Types and Structures > JPEG 2000 file format structures > L_JP2_COMPOSITION_BOX

L_JP2_COMPOSITION_BOX

typedef struct _tagL_JP2_COMPOSITION_BOX 
{ 
   L_UINT32 uStructSize; 
   L_JP2_COMPOPTIONS_BOX Options; 
   L_JP2_INSTSET_BOXES   Instructions; 
}L_JP2_COMPOSITION_BOX,   *pL_JP2_COMPOSITION_BOX;

The L_JP2_COMPOSITION_BOX structure provides information for Composition box.

Member	Description
uStructSize	Size of this structure, in bytes. Use the sizeof operator to calculate this value.
Options	Composition Options box. This box specifies the parameters that apply to the composition or animation as whole.
Instructions	Instruction Set boxes. These boxes contain a set of instructions for how to combine multiple composition layers in a file.

Comments

The Composition box specifies how individual composition layers are combined to create the rendered result. This box is defined in JPX and above file formats. A JPEG 2000 file may contain zero or one Composition box.