imageio_j2k.c File Reference

#include "common/darktable.h"
#include "common/exif.h"
#include "common/imageio_j2k.h"
#include "develop/imageop.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <openjpeg.h>

Include dependency graph for imageio_j2k.c:

Macros
#define	J2K_CFMT   0
#define	JP2_CFMT   1
#define	JPT_CFMT   2

Functions
static void	color_sycc_to_rgb (opj_image_t *img)
static void	error_callback (const char *msg, void *client_data)
static int	get_file_format (const char *filename)
dt_imageio_retval_t	dt_imageio_open_j2k (dt_image_t *img, const char *filename, dt_mipmap_buffer_t *mbuf)
int	dt_imageio_j2k_read_profile (const char *filename, uint8_t **out)
static void	sycc_to_rgb (int offset, int upb, int y, int cb, int cr, int *out_r, int *out_g, int *out_b)
static void	sycc444_to_rgb (opj_image_t *img)
static void	sycc422_to_rgb (opj_image_t *img)
static void	sycc420_to_rgb (opj_image_t *img)

Variables
static char	JP2_HEAD [] = { 0x0, 0x0, 0x0, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A }
static char	JP2_MAGIC [] = { 0x0d, 0x0a, 0x87, 0x0a }
static char	J2K_HEAD [] = { 0xFF, 0x4F, 0xFF, 0x51, 0x00 }

Macro Definition Documentation

J2K_CFMT

#define J2K_CFMT   0

JP2_CFMT

#define JP2_CFMT   1

JPT_CFMT

#define JPT_CFMT   2

Function Documentation

color_sycc_to_rgb()

static void color_sycc_to_rgb ( opj_image_t *  img )

static

References sycc420_to_rgb(), sycc422_to_rgb(), and sycc444_to_rgb().

Referenced by dt_imageio_open_j2k().

dt_imageio_j2k_read_profile()

int dt_imageio_j2k_read_profile	(	const char *	filename,
		uint8_t **	out
	)

reads the color profile attached to the image

Todo:

: how to do it without fully-decoding the whole image?

References DT_IMAGEIO_FILE_CORRUPTED, get_file_format(), J2K_HEAD, JP2_HEAD, and JP2_MAGIC.

Referenced by dt_image_find_best_color_profile().

dt_imageio_open_j2k()

dt_imageio_retval_t dt_imageio_open_j2k	(	dt_image_t *	img,
		const char *	filename,
		dt_mipmap_buffer_t *	mbuf
	)

References dt_image_t::buf_dsc, dt_iop_buffer_dsc_t::channels, color_sycc_to_rgb(), dt_iop_buffer_dsc_t::cst, darktable, dt_iop_buffer_dsc_t::datatype, dt_exif_read(), DT_IMAGE_LDR, DT_IMAGEIO_CACHE_FULL, DT_IMAGEIO_FILE_CORRUPTED, DT_IMAGEIO_FILE_NOT_FOUND, DT_IMAGEIO_OK, dt_mipmap_cache_alloc(), error_callback(), dt_image_t::exif_inited, dt_iop_buffer_dsc_t::filters, dt_image_t::flags, get_file_format(), dt_image_t::height, IOP_CS_RGB, J2K_CFMT, J2K_HEAD, JP2_CFMT, JP2_HEAD, JP2_MAGIC, JPT_CFMT, dt_image_t::loader, LOADER_J2K, MIN, darktable_t::num_openmp_threads, TYPE_FLOAT, void(), and dt_image_t::width.

Referenced by dt_imageio_open_raster().

error_callback()

static void error_callback ( const char *  msg, void *  client_data  )

static

sample error callback expecting a FILE* client object

Referenced by dt_imageio_open_j2k().

get_file_format()

static int get_file_format ( const char *  filename )

static

sample warning callback expecting a FILE* client object sample debug callback expecting no client object

References extension(), J2K_CFMT, JP2_CFMT, and JPT_CFMT.

Referenced by dt_imageio_j2k_read_profile(), and dt_imageio_open_j2k().

sycc420_to_rgb()

static void sycc420_to_rgb ( opj_image_t *  img )

static

References sycc_to_rgb().

Referenced by color_sycc_to_rgb().

sycc422_to_rgb()

static void sycc422_to_rgb ( opj_image_t *  img )

static

References sycc_to_rgb().

Referenced by color_sycc_to_rgb().

sycc444_to_rgb()

static void sycc444_to_rgb ( opj_image_t *  img )

static

References sycc_to_rgb().

Referenced by color_sycc_to_rgb().

sycc_to_rgb()

static void sycc_to_rgb ( int  offset, int  upb, int  y, int  cb, int  cr, int *  out_r, int *  out_g, int *  out_b  )

static

Referenced by sycc420_to_rgb(), sycc422_to_rgb(), and sycc444_to_rgb().

Variable Documentation

J2K_HEAD

char J2K_HEAD[] = { 0xFF, 0x4F, 0xFF, 0x51, 0x00 }

static

Referenced by dt_imageio_j2k_read_profile(), and dt_imageio_open_j2k().

JP2_HEAD

char JP2_HEAD[] = { 0x0, 0x0, 0x0, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A }

static

Referenced by dt_imageio_j2k_read_profile(), and dt_imageio_open_j2k().

JP2_MAGIC

char JP2_MAGIC[] = { 0x0d, 0x0a, 0x87, 0x0a }

static

Referenced by dt_imageio_j2k_read_profile(), and dt_imageio_open_j2k().