jas_image.h

/*
 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
 *   British Columbia.
 * Copyright (c) 2001-2003 Michael David Adams.
 * All rights reserved.
 */
 
/* __START_OF_JASPER_LICENSE__
 * 
 * JasPer License Version 2.0
 * 
 * Copyright (c) 2001-2006 Michael David Adams
 * Copyright (c) 1999-2000 Image Power, Inc.
 * Copyright (c) 1999-2000 The University of British Columbia
 * 
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person (the
 * "User") obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the
 * following conditions:
 * 
 * 1.  The above copyright notices and this permission notice (which
 * includes the disclaimer below) shall be included in all copies or
 * substantial portions of the Software.
 * 
 * 2.  The name of a copyright holder shall not be used to endorse or
 * promote products derived from the Software without specific prior
 * written permission.
 * 
 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
 * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
 * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
 * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
 * 
 * __END_OF_JASPER_LICENSE__
 */
 
/*
 * Image Class
 *
 * $Id$
 */
 
#ifndef JAS_IMAGE_H
#define JAS_IMAGE_H
 
/******************************************************************************\
* Includes.
\******************************************************************************/
 
/* The configuration header file should be included first. */
#include <jasper/jas_config.h>
 
#include <jasper/jas_stream.h>
#include <jasper/jas_seq.h>
#include <jasper/jas_cm.h>
#include <stdio.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/******************************************************************************\
* Constants.
\******************************************************************************/
 
/*
 * Miscellaneous constants.
 */
 
/* Basic units */
#define JAS_IMAGE_KIBI                  (JAS_CAST(size_t, 1024))
#define JAS_IMAGE_MEBI                  (JAS_IMAGE_KIBI * JAS_IMAGE_KIBI)
 
/* The threshold at which image data is no longer stored in memory. */
#define JAS_IMAGE_INMEMTHRESH   (256 * JAS_IMAGE_MEBI)
 
/*
 * Component types
 */
 
#define JAS_IMAGE_CT_UNKNOWN    0x10000
#define JAS_IMAGE_CT_COLOR(n)   ((n) & 0x7fff)
#define JAS_IMAGE_CT_OPACITY    0x08000
 
#define JAS_IMAGE_CT_RGB_R      0
#define JAS_IMAGE_CT_RGB_G      1
#define JAS_IMAGE_CT_RGB_B      2
 
#define JAS_IMAGE_CT_YCBCR_Y    0
#define JAS_IMAGE_CT_YCBCR_CB   1
#define JAS_IMAGE_CT_YCBCR_CR   2
 
#define JAS_IMAGE_CT_GRAY_Y     0
 
/******************************************************************************\
* Simple types.
\******************************************************************************/
 
/* Image coordinate. */
typedef int_fast32_t jas_image_coord_t;
#define JAS_IMAGE_COORD_MAX INT_FAST32_MAX
#define JAS_IMAGE_COORD_MIN INT_FAST32_MIN
 
/* Color space (e.g., RGB, YCbCr). */
typedef int_fast16_t jas_image_colorspc_t;
 
/* Component type (e.g., color, opacity). */
typedef int_fast32_t jas_image_cmpttype_t;
 
/* Component sample data format (e.g., real/integer, signedness, precision). */
typedef int_fast16_t jas_image_smpltype_t;
 
/******************************************************************************\
* Image class and supporting classes.
\******************************************************************************/
 
/* Image component class. */
 
typedef struct {
 
        jas_image_coord_t tlx_;
        /* The x-coordinate of the top-left corner of the component. */
 
        jas_image_coord_t tly_;
        /* The y-coordinate of the top-left corner of the component. */
 
        jas_image_coord_t hstep_;
        /* The horizontal sampling period in units of the reference grid. */
 
        jas_image_coord_t vstep_;
        /* The vertical sampling period in units of the reference grid. */
 
        jas_image_coord_t width_;
        /* The component width in samples. */
 
        jas_image_coord_t height_;
        /* The component height in samples. */
 
#ifdef FIX_ME
        int smpltype_;
#else
        int prec_;
        /* The precision of the sample data (i.e., the number of bits per
        sample).  If the samples are signed values, this quantity
        includes the sign bit. */
 
        int sgnd_;
        /* The signedness of the sample data. */
#endif
 
        jas_stream_t *stream_;
        /* The stream containing the component data. */
 
        int cps_;
        /* The number of characters per sample in the stream. */
 
        jas_image_cmpttype_t type_;
        /* The type of component (e.g., opacity, red, green, blue, luma). */
 
} jas_image_cmpt_t;
 
/* Image class. */
 
typedef struct {
 
        jas_image_coord_t tlx_;
        /* The x-coordinate of the top-left corner of the image bounding box. */
 
        jas_image_coord_t tly_;
        /* The y-coordinate of the top-left corner of the image bounding box. */
 
        jas_image_coord_t brx_;
        /* The x-coordinate of the bottom-right corner of the image bounding
          box (plus one). */
 
        jas_image_coord_t bry_;
        /* The y-coordinate of the bottom-right corner of the image bounding
          box (plus one). */
 
        int numcmpts_;
        /* The number of components. */
 
        int maxcmpts_;
        /* The maximum number of components that this image can have (i.e., the
          allocated size of the components array). */
 
        jas_image_cmpt_t **cmpts_;
        /* Per-component information. */
 
        jas_clrspc_t clrspc_;
 
        jas_cmprof_t *cmprof_;
 
//      bool inmem_;
 
} jas_image_t;
 
/* Component parameters class. */
/* This data type exists solely/mainly for the purposes of the
  jas_image_create function. */
 
typedef struct {
 
        jas_image_coord_t tlx;
        /* The x-coordinate of the top-left corner of the component. */
 
        jas_image_coord_t tly;
        /* The y-coordinate of the top-left corner of the component. */
 
        jas_image_coord_t hstep;
        /* The horizontal sampling period in units of the reference grid. */
 
        jas_image_coord_t vstep;
        /* The vertical sampling period in units of the reference grid. */
 
        jas_image_coord_t width;
        /* The width of the component in samples. */
 
        jas_image_coord_t height;
        /* The height of the component in samples. */
 
#ifdef FIX_ME
        int smpltype;
#else
        int prec;
        /* The precision of the component sample data. */
 
        int sgnd;
        /* The signedness of the component sample data. */
#endif
 
} jas_image_cmptparm_t;
 
/******************************************************************************\
* File format related classes.
\******************************************************************************/
 
#define JAS_IMAGE_MAXFMTS       32
/* The maximum number of image data formats supported. */
 
/* Image format-dependent operations. */
 
typedef struct {
 
        jas_image_t *(*decode)(jas_stream_t *in, const char *opts);
        /* Decode image data from a stream. */
 
        int (*encode)(jas_image_t *image, jas_stream_t *out, const char *opts);
        /* Encode image data to a stream. */
 
        int (*validate)(jas_stream_t *in);
        /* Determine if stream data is in a particular format. */
 
} jas_image_fmtops_t;
 
/* Image format information. */
 
typedef struct {
 
        int id;
        /* The ID for this format. */
 
        char *name;
        /* The name by which this format is identified. */
 
        char *ext;
        /* The file name extension associated with this format. */
 
        char *desc;
        /* A brief description of the format. */
 
        jas_image_fmtops_t ops;
        /* The operations for this format. */
 
} jas_image_fmtinfo_t;
 
/******************************************************************************\
* Image operations.
\******************************************************************************/
 
/* Create an image. */
JAS_DLLEXPORT jas_image_t *jas_image_create(int numcmpts,
  jas_image_cmptparm_t *cmptparms, jas_clrspc_t clrspc);
 
/* Create an "empty" image. */
JAS_DLLEXPORT jas_image_t *jas_image_create0(void);
 
/* Clone an image. */
JAS_DLLEXPORT jas_image_t *jas_image_copy(jas_image_t *image);
 
/* Deallocate any resources associated with an image. */
JAS_DLLEXPORT void jas_image_destroy(jas_image_t *image);
 
/* Get the width of the image in units of the image reference grid. */
#define jas_image_width(image) \
        ((image)->brx_ - (image)->tlx_)
 
/* Get the height of the image in units of the image reference grid. */
#define jas_image_height(image) \
        ((image)->bry_ - (image)->tly_)
 
/* Get the x-coordinate of the top-left corner of the image bounding box
  on the reference grid. */
#define jas_image_tlx(image) \
        ((image)->tlx_)
 
/* Get the y-coordinate of the top-left corner of the image bounding box
  on the reference grid. */
#define jas_image_tly(image) \
        ((image)->tly_)
 
/* Get the x-coordinate of the bottom-right corner of the image bounding box
  on the reference grid (plus one). */
#define jas_image_brx(image) \
        ((image)->brx_)
 
/* Get the y-coordinate of the bottom-right corner of the image bounding box
  on the reference grid (plus one). */
#define jas_image_bry(image) \
        ((image)->bry_)
 
/* Get the number of image components. */
#define jas_image_numcmpts(image) \
        ((image)->numcmpts_)
 
/* Get the color model used by the image. */
#define jas_image_clrspc(image) \
        ((image)->clrspc_)
 
/* Set the color model for an image. */
#define jas_image_setclrspc(image, clrspc) \
        ((image)->clrspc_ = (clrspc))
 
#define jas_image_cmpttype(image, cmptno) \
        ((image)->cmpts_[(cmptno)]->type_)
#define jas_image_setcmpttype(image, cmptno, type) \
        ((image)->cmpts_[(cmptno)]->type_ = (type))
 
/* Get the width of a component. */
#define jas_image_cmptwidth(image, cmptno) \
        ((image)->cmpts_[cmptno]->width_)
 
/* Get the height of a component. */
#define jas_image_cmptheight(image, cmptno) \
        ((image)->cmpts_[cmptno]->height_)
 
/* Get the signedness of the sample data for a component. */
#define jas_image_cmptsgnd(image, cmptno) \
        ((image)->cmpts_[cmptno]->sgnd_)
 
/* Get the precision of the sample data for a component. */
#define jas_image_cmptprec(image, cmptno) \
        ((image)->cmpts_[cmptno]->prec_)
 
/* Get the horizontal subsampling factor for a component. */
#define jas_image_cmpthstep(image, cmptno) \
        ((image)->cmpts_[cmptno]->hstep_)
 
/* Get the vertical subsampling factor for a component. */
#define jas_image_cmptvstep(image, cmptno) \
        ((image)->cmpts_[cmptno]->vstep_)
 
/* Get the x-coordinate of the top-left corner of a component. */
#define jas_image_cmpttlx(image, cmptno) \
        ((image)->cmpts_[cmptno]->tlx_)
 
/* Get the y-coordinate of the top-left corner of a component. */
#define jas_image_cmpttly(image, cmptno) \
        ((image)->cmpts_[cmptno]->tly_)
 
/* Get the x-coordinate of the bottom-right corner of a component
  (plus "one"). */
#define jas_image_cmptbrx(image, cmptno) \
        ((image)->cmpts_[cmptno]->tlx_ + (image)->cmpts_[cmptno]->width_ * \
          (image)->cmpts_[cmptno]->hstep_)
 
/* Get the y-coordinate of the bottom-right corner of a component
  (plus "one"). */
#define jas_image_cmptbry(image, cmptno) \
        ((image)->cmpts_[cmptno]->tly_ + (image)->cmpts_[cmptno]->height_ * \
          (image)->cmpts_[cmptno]->vstep_)
 
// Test if all components are specified at the same positions in space. */
JAS_DLLEXPORT bool jas_image_cmpt_domains_same(jas_image_t *image);
 
/* Get the raw size of an image (i.e., the nominal size of the image without
  any compression. */
JAS_DLLEXPORT uint_fast32_t jas_image_rawsize(jas_image_t *image);
 
/* Create an image from a stream in some specified format. */
JAS_DLLEXPORT jas_image_t *jas_image_decode(jas_stream_t *in, int fmt, const char *optstr);
 
/* Write an image to a stream in a specified format. */
JAS_DLLEXPORT int jas_image_encode(jas_image_t *image, jas_stream_t *out, int fmt,
  const char *optstr);
 
/* Read a rectangular region of an image component. */
/* The position and size of the rectangular region to be read is specified
relative to the component's coordinate system. */
JAS_DLLEXPORT int jas_image_readcmpt(jas_image_t *image, int cmptno, jas_image_coord_t x,
  jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
  jas_matrix_t *data);
 
/* Write a rectangular region of an image component. */
JAS_DLLEXPORT int jas_image_writecmpt(jas_image_t *image, int cmptno, jas_image_coord_t x,
  jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
  jas_matrix_t *data);
 
/* Delete a component from an image. */
JAS_DLLEXPORT void jas_image_delcmpt(jas_image_t *image, int cmptno);
 
/* Add a component to an image. */
JAS_DLLEXPORT int jas_image_addcmpt(jas_image_t *image, int cmptno,
  jas_image_cmptparm_t *cmptparm);
 
/* Copy a component from one image to another. */
JAS_DLLEXPORT int jas_image_copycmpt(jas_image_t *dstimage, int dstcmptno,
  jas_image_t *srcimage, int srccmptno);
 
#define JAS_IMAGE_CDT_GETSGND(dtype) (((dtype) >> 7) & 1)
#define JAS_IMAGE_CDT_SETSGND(dtype) (((dtype) & 1) << 7)
#define JAS_IMAGE_CDT_GETPREC(dtype) ((dtype) & 0x7f)
#define JAS_IMAGE_CDT_SETPREC(dtype) ((dtype) & 0x7f)
 
#define jas_image_cmptdtype(image, cmptno) \
        (JAS_IMAGE_CDT_SETSGND((image)->cmpts_[cmptno]->sgnd_) | JAS_IMAGE_CDT_SETPREC((image)->cmpts_[cmptno]->prec_))
 
JAS_DLLEXPORT int jas_image_depalettize(jas_image_t *image, int cmptno, int numlutents,
  int_fast32_t *lutents, int dtype, int newcmptno);
 
JAS_DLLEXPORT int jas_image_readcmptsample(jas_image_t *image, int cmptno, int x, int y);
JAS_DLLEXPORT void jas_image_writecmptsample(jas_image_t *image, int cmptno, int x, int y,
  int_fast32_t v);
 
JAS_DLLEXPORT int jas_image_getcmptbytype(jas_image_t *image, int ctype);
 
/******************************************************************************\
* Image format-related operations.
\******************************************************************************/
 
/* Clear the table of image formats. */
JAS_DLLEXPORT void jas_image_clearfmts(void);
 
/* Add entry to table of image formats. */
JAS_DLLEXPORT int jas_image_addfmt(int id, char *name, char *ext, char *desc,
  jas_image_fmtops_t *ops);
 
/* Get the ID for the image format with the specified name. */
JAS_DLLEXPORT int jas_image_strtofmt(char *s);
 
/* Get the name of the image format with the specified ID. */
JAS_DLLEXPORT char *jas_image_fmttostr(int fmt);
 
/* Lookup image format information by the format ID. */
JAS_DLLEXPORT jas_image_fmtinfo_t *jas_image_lookupfmtbyid(int id);
 
/* Lookup image format information by the format name. */
JAS_DLLEXPORT jas_image_fmtinfo_t *jas_image_lookupfmtbyname(const char *name);
 
/* Guess the format of an image file based on its name. */
JAS_DLLEXPORT int jas_image_fmtfromname(char *filename);
 
/* Get the format of image data in a stream. */
JAS_DLLEXPORT int jas_image_getfmt(jas_stream_t *in);
 
 
#define jas_image_cmprof(image) ((image)->cmprof_)
int jas_image_ishomosamp(jas_image_t *image);
int jas_image_sampcmpt(jas_image_t *image, int cmptno, int newcmptno,
  jas_image_coord_t ho, jas_image_coord_t vo, jas_image_coord_t hs,
  jas_image_coord_t vs, int sgnd, int prec);
int jas_image_writecmpt2(jas_image_t *image, int cmptno, jas_image_coord_t x,
  jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
  long *buf);
int jas_image_readcmpt2(jas_image_t *image, int cmptno, jas_image_coord_t x,
  jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
  long *buf);
 
#define jas_image_setcmprof(image, cmprof) ((image)->cmprof_ = cmprof)
JAS_DLLEXPORT jas_image_t *jas_image_chclrspc(jas_image_t *image, jas_cmprof_t *outprof,
  int intent);
void jas_image_dump(jas_image_t *image, FILE *out);
 
/******************************************************************************\
* Image format-dependent operations.
\******************************************************************************/
 
#if !defined(EXCLUDE_JPG_SUPPORT)
/* Format-dependent operations for JPG support. */
jas_image_t *jpg_decode(jas_stream_t *in, const char *optstr);
int jpg_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int jpg_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_MIF_SUPPORT)
/* Format-dependent operations for MIF support. */
jas_image_t *mif_decode(jas_stream_t *in, const char *optstr);
int mif_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int mif_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_PNM_SUPPORT)
/* Format-dependent operations for PNM support. */
jas_image_t *pnm_decode(jas_stream_t *in, const char *optstr);
int pnm_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int pnm_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_RAS_SUPPORT)
/* Format-dependent operations for Sun Rasterfile support. */
jas_image_t *ras_decode(jas_stream_t *in, const char *optstr);
int ras_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int ras_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_BMP_SUPPORT)
/* Format-dependent operations for BMP support. */
jas_image_t *bmp_decode(jas_stream_t *in, const char *optstr);
int bmp_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int bmp_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_JP2_SUPPORT)
/* Format-dependent operations for JP2 support. */
jas_image_t *jp2_decode(jas_stream_t *in, const char *optstr);
int jp2_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int jp2_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_JPC_SUPPORT)
/* Format-dependent operations for JPEG-2000 code stream support. */
jas_image_t *jpc_decode(jas_stream_t *in, const char *optstr);
int jpc_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int jpc_validate(jas_stream_t *in);
#endif
 
#if !defined(EXCLUDE_PGX_SUPPORT)
/* Format-dependent operations for PGX support. */
jas_image_t *pgx_decode(jas_stream_t *in, const char *optstr);
int pgx_encode(jas_image_t *image, jas_stream_t *out, const char *optstr);
int pgx_validate(jas_stream_t *in);
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif