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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
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