image.h File Reference

Implementation of operations on images (IMAGE) More...

Go to the source code of this file.

Functions
opj_image_t *	opj_image_create0 (void)
	Create an empty image. More...
void	opj_image_comp_header_update (opj_image_t *p_image, const struct opj_cp *p_cp)
	Updates the components characteristics of the image from the coding parameters. More...
void	opj_copy_image_header (const opj_image_t *p_image_src, opj_image_t *p_image_dest)
	Copy only header of image and its component header (no data are copied) if dest image have data, they will be freed. More...

Detailed Description

Implementation of operations on images (IMAGE)

The functions in IMAGE.C have for goal to realize operations on images.

Function Documentation

opj_copy_image_header()

void opj_copy_image_header	(	const opj_image_t *	p_image_src,
		opj_image_t *	p_image_dest
	)

Copy only header of image and its component header (no data are copied) if dest image have data, they will be freed.

Parameters

p_image_src	the src image
p_image_dest	the dest image

References opj_image::color_space, opj_image::comps, opj_image_comp::data, opj_image::icc_profile_buf, opj_image::icc_profile_len, opj_image::numcomps, opj_free(), opj_image_data_free(), opj_malloc(), opj_image::x0, opj_image::x1, opj_image::y0, and opj_image::y1.

Referenced by opj_j2k_decode(), opj_j2k_get_tile(), opj_j2k_read_header(), and opj_j2k_start_compress().

opj_image_comp_header_update()

void opj_image_comp_header_update	(	opj_image_t *	p_image_header,
		const struct opj_cp *	p_cp
	)

Updates the components characteristics of the image from the coding parameters.

Parameters

p_image_header	the image header to update.
p_cp	the coding parameters from which to update the image.

References opj_image::comps, opj_image_comp::dx, opj_image_comp::dy, opj_image_comp::factor, opj_image_comp::h, opj_image::numcomps, opj_uint_adds(), opj_uint_ceildiv(), opj_uint_ceildivpow2(), opj_uint_max(), opj_uint_min(), opj_cp::tdx, opj_cp::tdy, opj_cp::th, opj_cp::tw, opj_cp::tx0, opj_cp::ty0, opj_image_comp::w, opj_image_comp::x0, opj_image::x0, opj_image::x1, opj_image_comp::y0, opj_image::y0, and opj_image::y1.

Referenced by opj_j2k_read_siz().

opj_image_create0()

opj_image_t* opj_image_create0

(

void

)

Create an empty image.

Returns

returns an empty image if successful, returns NULL otherwise

References opj_calloc().

Referenced by opj_j2k_decode(), opj_j2k_get_tile(), opj_j2k_read_header(), and opj_j2k_start_compress().