564 lines
18 KiB
C
564 lines
18 KiB
C
/*
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* Copyright (c) 1999-2000 Image Power, Inc. and the University of
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* British Columbia.
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* Copyright (c) 2001-2003 Michael David Adams.
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* All rights reserved.
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*/
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/* __START_OF_JASPER_LICENSE__
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*
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* JasPer License Version 2.0
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*
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* Copyright (c) 2001-2006 Michael David Adams
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* Copyright (c) 1999-2000 Image Power, Inc.
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* Copyright (c) 1999-2000 The University of British Columbia
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*
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person (the
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* "User") obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, and/or sell copies of the Software, and to permit
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* persons to whom the Software is furnished to do so, subject to the
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* following conditions:
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*
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* 1. The above copyright notices and this permission notice (which
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* includes the disclaimer below) shall be included in all copies or
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* substantial portions of the Software.
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*
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* 2. The name of a copyright holder shall not be used to endorse or
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* promote products derived from the Software without specific prior
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* written permission.
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*
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* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
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* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
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* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
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* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
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* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
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* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
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* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
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* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
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* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
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* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
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* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
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* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
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* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
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* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
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* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
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* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
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* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
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* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
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* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
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* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
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*
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* __END_OF_JASPER_LICENSE__
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*/
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/*
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* Image Class
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*
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* $Id: jas_image.h,v 1.2 2008-05-26 09:41:51 vp153 Exp $
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*/
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#ifndef JAS_IMAGE_H
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#define JAS_IMAGE_H
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/******************************************************************************\
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* Includes.
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\******************************************************************************/
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#include <jasper/jas_config.h>
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#include <jasper/jas_stream.h>
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#include <jasper/jas_seq.h>
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#include <jasper/jas_cm.h>
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/******************************************************************************\
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* Constants.
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\******************************************************************************/
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/*
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* Miscellaneous constants.
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*/
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/* The threshold at which image data is no longer stored in memory. */
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#define JAS_IMAGE_INMEMTHRESH (16 * 1024 * 1024)
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/*
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* Component types
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*/
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#define JAS_IMAGE_CT_UNKNOWN 0x10000
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#define JAS_IMAGE_CT_COLOR(n) ((n) & 0x7fff)
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#define JAS_IMAGE_CT_OPACITY 0x08000
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#define JAS_IMAGE_CT_RGB_R 0
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#define JAS_IMAGE_CT_RGB_G 1
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#define JAS_IMAGE_CT_RGB_B 2
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#define JAS_IMAGE_CT_YCBCR_Y 0
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#define JAS_IMAGE_CT_YCBCR_CB 1
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#define JAS_IMAGE_CT_YCBCR_CR 2
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#define JAS_IMAGE_CT_GRAY_Y 0
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/******************************************************************************\
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* Simple types.
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\******************************************************************************/
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/* Image coordinate. */
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typedef int_fast32_t jas_image_coord_t;
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/* Color space (e.g., RGB, YCbCr). */
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typedef int_fast16_t jas_image_colorspc_t;
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/* Component type (e.g., color, opacity). */
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typedef int_fast32_t jas_image_cmpttype_t;
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/* Component sample data format (e.g., real/integer, signedness, precision). */
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typedef int_fast16_t jas_image_smpltype_t;
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/******************************************************************************\
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* Image class and supporting classes.
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\******************************************************************************/
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/* Image component class. */
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typedef struct {
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jas_image_coord_t tlx_;
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/* The x-coordinate of the top-left corner of the component. */
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jas_image_coord_t tly_;
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/* The y-coordinate of the top-left corner of the component. */
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jas_image_coord_t hstep_;
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/* The horizontal sampling period in units of the reference grid. */
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jas_image_coord_t vstep_;
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/* The vertical sampling period in units of the reference grid. */
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jas_image_coord_t width_;
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/* The component width in samples. */
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jas_image_coord_t height_;
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/* The component height in samples. */
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#ifdef FIX_ME
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int smpltype_;
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#else
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int prec_;
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/* The precision of the sample data (i.e., the number of bits per
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sample). If the samples are signed values, this quantity
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includes the sign bit. */
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int sgnd_;
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/* The signedness of the sample data. */
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#endif
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jas_stream_t *stream_;
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/* The stream containing the component data. */
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int cps_;
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/* The number of characters per sample in the stream. */
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jas_image_cmpttype_t type_;
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/* The type of component (e.g., opacity, red, green, blue, luma). */
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} jas_image_cmpt_t;
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/* Image class. */
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typedef struct {
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jas_image_coord_t tlx_;
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/* The x-coordinate of the top-left corner of the image bounding box. */
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jas_image_coord_t tly_;
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/* The y-coordinate of the top-left corner of the image bounding box. */
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jas_image_coord_t brx_;
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/* The x-coordinate of the bottom-right corner of the image bounding
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box (plus one). */
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jas_image_coord_t bry_;
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/* The y-coordinate of the bottom-right corner of the image bounding
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box (plus one). */
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int numcmpts_;
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/* The number of components. */
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int maxcmpts_;
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/* The maximum number of components that this image can have (i.e., the
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allocated size of the components array). */
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jas_image_cmpt_t **cmpts_;
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/* Per-component information. */
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jas_clrspc_t clrspc_;
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jas_cmprof_t *cmprof_;
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bool inmem_;
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} jas_image_t;
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/* Component parameters class. */
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/* This data type exists solely/mainly for the purposes of the
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jas_image_create function. */
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typedef struct {
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jas_image_coord_t tlx;
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/* The x-coordinate of the top-left corner of the component. */
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jas_image_coord_t tly;
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/* The y-coordinate of the top-left corner of the component. */
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jas_image_coord_t hstep;
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/* The horizontal sampling period in units of the reference grid. */
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jas_image_coord_t vstep;
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/* The vertical sampling period in units of the reference grid. */
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jas_image_coord_t width;
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/* The width of the component in samples. */
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jas_image_coord_t height;
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/* The height of the component in samples. */
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#ifdef FIX_ME
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int smpltype;
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#else
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int prec;
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/* The precision of the component sample data. */
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int sgnd;
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/* The signedness of the component sample data. */
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#endif
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} jas_image_cmptparm_t;
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/******************************************************************************\
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* File format related classes.
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\******************************************************************************/
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#define JAS_IMAGE_MAXFMTS 32
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/* The maximum number of image data formats supported. */
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/* Image format-dependent operations. */
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typedef struct {
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jas_image_t *(*decode)(jas_stream_t *in, char *opts);
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/* Decode image data from a stream. */
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int (*encode)(jas_image_t *image, jas_stream_t *out, char *opts);
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/* Encode image data to a stream. */
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int (*validate)(jas_stream_t *in);
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/* Determine if stream data is in a particular format. */
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} jas_image_fmtops_t;
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/* Image format information. */
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typedef struct {
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int id;
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/* The ID for this format. */
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char *name;
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/* The name by which this format is identified. */
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char *ext;
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/* The file name extension associated with this format. */
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char *desc;
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/* A brief description of the format. */
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jas_image_fmtops_t ops;
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/* The operations for this format. */
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} jas_image_fmtinfo_t;
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/******************************************************************************\
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* Image operations.
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\******************************************************************************/
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/* Create an image. */
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jas_image_t *jas_image_create(int numcmpts,
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jas_image_cmptparm_t *cmptparms, jas_clrspc_t clrspc);
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/* Create an "empty" image. */
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jas_image_t *jas_image_create0(void);
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/* Clone an image. */
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jas_image_t *jas_image_copy(jas_image_t *image);
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/* Deallocate any resources associated with an image. */
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void jas_image_destroy(jas_image_t *image);
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/* Get the width of the image in units of the image reference grid. */
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#define jas_image_width(image) \
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((image)->brx_ - (image)->tlx_)
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/* Get the height of the image in units of the image reference grid. */
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#define jas_image_height(image) \
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((image)->bry_ - (image)->tly_)
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/* Get the x-coordinate of the top-left corner of the image bounding box
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on the reference grid. */
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#define jas_image_tlx(image) \
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((image)->tlx_)
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/* Get the y-coordinate of the top-left corner of the image bounding box
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on the reference grid. */
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#define jas_image_tly(image) \
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((image)->tly_)
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/* Get the x-coordinate of the bottom-right corner of the image bounding box
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on the reference grid (plus one). */
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#define jas_image_brx(image) \
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((image)->brx_)
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/* Get the y-coordinate of the bottom-right corner of the image bounding box
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on the reference grid (plus one). */
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#define jas_image_bry(image) \
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((image)->bry_)
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/* Get the number of image components. */
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#define jas_image_numcmpts(image) \
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((image)->numcmpts_)
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/* Get the color model used by the image. */
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#define jas_image_clrspc(image) \
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((image)->clrspc_)
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/* Set the color model for an image. */
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#define jas_image_setclrspc(image, clrspc) \
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((image)->clrspc_ = (clrspc))
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#define jas_image_cmpttype(image, cmptno) \
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((image)->cmpts_[(cmptno)]->type_)
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#define jas_image_setcmpttype(image, cmptno, type) \
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((image)->cmpts_[(cmptno)]->type_ = (type))
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/* Get the width of a component. */
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#define jas_image_cmptwidth(image, cmptno) \
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((image)->cmpts_[cmptno]->width_)
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/* Get the height of a component. */
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#define jas_image_cmptheight(image, cmptno) \
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((image)->cmpts_[cmptno]->height_)
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/* Get the signedness of the sample data for a component. */
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#define jas_image_cmptsgnd(image, cmptno) \
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((image)->cmpts_[cmptno]->sgnd_)
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/* Get the precision of the sample data for a component. */
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#define jas_image_cmptprec(image, cmptno) \
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((image)->cmpts_[cmptno]->prec_)
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/* Get the horizontal subsampling factor for a component. */
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#define jas_image_cmpthstep(image, cmptno) \
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((image)->cmpts_[cmptno]->hstep_)
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/* Get the vertical subsampling factor for a component. */
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#define jas_image_cmptvstep(image, cmptno) \
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((image)->cmpts_[cmptno]->vstep_)
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/* Get the x-coordinate of the top-left corner of a component. */
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#define jas_image_cmpttlx(image, cmptno) \
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((image)->cmpts_[cmptno]->tlx_)
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/* Get the y-coordinate of the top-left corner of a component. */
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#define jas_image_cmpttly(image, cmptno) \
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((image)->cmpts_[cmptno]->tly_)
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/* Get the x-coordinate of the bottom-right corner of a component
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(plus "one"). */
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#define jas_image_cmptbrx(image, cmptno) \
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((image)->cmpts_[cmptno]->tlx_ + (image)->cmpts_[cmptno]->width_ * \
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(image)->cmpts_[cmptno]->hstep_)
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/* Get the y-coordinate of the bottom-right corner of a component
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(plus "one"). */
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#define jas_image_cmptbry(image, cmptno) \
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((image)->cmpts_[cmptno]->tly_ + (image)->cmpts_[cmptno]->height_ * \
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(image)->cmpts_[cmptno]->vstep_)
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/* Get the raw size of an image (i.e., the nominal size of the image without
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any compression. */
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uint_fast32_t jas_image_rawsize(jas_image_t *image);
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/* Create an image from a stream in some specified format. */
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jas_image_t *jas_image_decode(jas_stream_t *in, int fmt, char *optstr);
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/* Write an image to a stream in a specified format. */
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int jas_image_encode(jas_image_t *image, jas_stream_t *out, int fmt,
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char *optstr);
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/* Read a rectangular region of an image component. */
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/* The position and size of the rectangular region to be read is specified
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relative to the component's coordinate system. */
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int jas_image_readcmpt(jas_image_t *image, int cmptno,
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jas_image_coord_t x, jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
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jas_matrix_t *data);
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/* Write a rectangular region of an image component. */
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int jas_image_writecmpt(jas_image_t *image, int cmptno,
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jas_image_coord_t x, jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
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jas_matrix_t *data);
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/* Delete a component from an image. */
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void jas_image_delcmpt(jas_image_t *image, int cmptno);
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/* Add a component to an image. */
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int jas_image_addcmpt(jas_image_t *image, int cmptno,
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jas_image_cmptparm_t *cmptparm);
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/* Copy a component from one image to another. */
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int jas_image_copycmpt(jas_image_t *dstimage, int dstcmptno,
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jas_image_t *srcimage, int srccmptno);
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#define JAS_IMAGE_CDT_GETSGND(dtype) (((dtype) >> 7) & 1)
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#define JAS_IMAGE_CDT_SETSGND(dtype) (((dtype) & 1) << 7)
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#define JAS_IMAGE_CDT_GETPREC(dtype) ((dtype) & 0x7f)
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#define JAS_IMAGE_CDT_SETPREC(dtype) ((dtype) & 0x7f)
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#define jas_image_cmptdtype(image, cmptno) \
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(JAS_IMAGE_CDT_SETSGND((image)->cmpts_[cmptno]->sgnd_) | JAS_IMAGE_CDT_SETPREC((image)->cmpts_[cmptno]->prec_))
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int jas_image_depalettize(jas_image_t *image, int cmptno, int numlutents,
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int_fast32_t *lutents, int dtype, int newcmptno);
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int jas_image_readcmptsample(jas_image_t *image, int cmptno, int x, int y);
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void jas_image_writecmptsample(jas_image_t *image, int cmptno, int x, int y,
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int_fast32_t v);
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int jas_image_getcmptbytype(jas_image_t *image, int ctype);
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/******************************************************************************\
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* Image format-related operations.
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\******************************************************************************/
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/* Clear the table of image formats. */
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void jas_image_clearfmts(void);
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/* Add entry to table of image formats. */
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int jas_image_addfmt(int id, char *name, char *ext, char *desc,
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jas_image_fmtops_t *ops);
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/* Get the ID for the image format with the specified name. */
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int jas_image_strtofmt(char *s);
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/* Get the name of the image format with the specified ID. */
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char *jas_image_fmttostr(int fmt);
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/* Lookup image format information by the format ID. */
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jas_image_fmtinfo_t *jas_image_lookupfmtbyid(int id);
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/* Lookup image format information by the format name. */
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jas_image_fmtinfo_t *jas_image_lookupfmtbyname(const char *name);
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/* Guess the format of an image file based on its name. */
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int jas_image_fmtfromname(char *filename);
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/* Get the format of image data in a stream. */
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int jas_image_getfmt(jas_stream_t *in);
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#define jas_image_cmprof(image) ((image)->cmprof_)
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int jas_image_ishomosamp(jas_image_t *image);
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int jas_image_sampcmpt(jas_image_t *image, int cmptno, int newcmptno,
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jas_image_coord_t ho, jas_image_coord_t vo, jas_image_coord_t hs,
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jas_image_coord_t vs, int sgnd, int prec);
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int jas_image_writecmpt2(jas_image_t *image, int cmptno, jas_image_coord_t x,
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jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
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long *buf);
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int jas_image_readcmpt2(jas_image_t *image, int cmptno, jas_image_coord_t x,
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jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
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long *buf);
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#define jas_image_setcmprof(image, cmprof) ((image)->cmprof_ = cmprof)
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jas_image_t *jas_image_chclrspc(jas_image_t *image, jas_cmprof_t *outprof,
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int intent);
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void jas_image_dump(jas_image_t *image, FILE *out);
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/******************************************************************************\
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* Image format-dependent operations.
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\******************************************************************************/
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#if !defined(EXCLUDE_JPG_SUPPORT)
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/* Format-dependent operations for JPG support. */
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jas_image_t *jpg_decode(jas_stream_t *in, char *optstr);
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int jpg_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int jpg_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_MIF_SUPPORT)
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/* Format-dependent operations for MIF support. */
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jas_image_t *mif_decode(jas_stream_t *in, char *optstr);
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int mif_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int mif_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_PNM_SUPPORT)
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/* Format-dependent operations for PNM support. */
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jas_image_t *pnm_decode(jas_stream_t *in, char *optstr);
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int pnm_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int pnm_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_RAS_SUPPORT)
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/* Format-dependent operations for Sun Rasterfile support. */
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jas_image_t *ras_decode(jas_stream_t *in, char *optstr);
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int ras_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int ras_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_BMP_SUPPORT)
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/* Format-dependent operations for BMP support. */
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jas_image_t *bmp_decode(jas_stream_t *in, char *optstr);
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int bmp_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int bmp_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_JP2_SUPPORT)
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/* Format-dependent operations for JP2 support. */
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jas_image_t *jp2_decode(jas_stream_t *in, char *optstr);
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int jp2_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int jp2_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_JPC_SUPPORT)
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/* Format-dependent operations for JPEG-2000 code stream support. */
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jas_image_t *jpc_decode(jas_stream_t *in, char *optstr);
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int jpc_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int jpc_validate(jas_stream_t *in);
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#endif
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#if !defined(EXCLUDE_PGX_SUPPORT)
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/* Format-dependent operations for PGX support. */
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jas_image_t *pgx_decode(jas_stream_t *in, char *optstr);
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int pgx_encode(jas_image_t *image, jas_stream_t *out, char *optstr);
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int pgx_validate(jas_stream_t *in);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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