/* * Copyright (c) 2001 Michael David Adams. * All rights reserved. *//* __START_OF_JASPER_LICENSE__ *  * JasPer Software License *  * IMAGE POWER JPEG-2000 PUBLIC LICENSE * ************************************ *  * WHEREAS: *  * Permission is hereby granted, free of charge, to any person (the "User") * obtaining a copy of this software and associated documentation, to deal * in the JasPer Software without restriction, including without limitation * the right to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the JasPer Software (in source and binary forms), * and to permit persons to whom the JasPer Software is furnished to do so, * provided further that the License Conditions below are met. *  * License Conditions * ****************** *  * A.  Redistributions of source code must retain the above copyright notice, * and this list of conditions, and the following disclaimer. *  * B.  Redistributions in binary form must reproduce the above copyright * notice, and this list of conditions, and the following disclaimer in * the documentation and/or other materials provided with the distribution. *  * C.  Neither the name of Image Power, Inc. nor any other contributor * (including, but not limited to, the University of British Columbia and * Michael David Adams) may be used to endorse or promote products derived * from this software without specific prior written permission. *  * D.  User agrees that it shall not commence any action against Image Power, * Inc., the University of British Columbia, Michael David Adams, or any * other contributors (collectively "Licensors") for infringement of any * intellectual property rights ("IPR") held by the User in respect of any * technology that User owns or has a right to license or sublicense and * which is an element required in order to claim compliance with ISO/IEC * 15444-1 (i.e., JPEG-2000 Part 1).  "IPR" means all intellectual property * rights worldwide arising under statutory or common law, and whether * or not perfected, including, without limitation, all (i) patents and * patent applications owned or licensable by User; (ii) rights associated * with works of authorship including copyrights, copyright applications, * copyright registrations, mask work rights, mask work applications, * mask work registrations; (iii) rights relating to the protection of * trade secrets and confidential information; (iv) any right analogous * to those set forth in subsections (i), (ii), or (iii) and any other * proprietary rights relating to intangible property (other than trademark, * trade dress, or service mark rights); and (v) divisions, continuations, * renewals, reissues and extensions of the foregoing (as and to the extent * applicable) now existing, hereafter filed, issued or acquired. *  * E.  If User commences an infringement action against any Licensor(s) then * such Licensor(s) shall have the right to terminate User's license and * all sublicenses that have been granted hereunder by User to other parties. *  * F.  This software is for use only in hardware or software products that * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1).  No license * or right to this Software is granted for products that do not comply * with ISO/IEC 15444-1.  The JPEG-2000 Part 1 standard can be purchased * from the ISO. *  * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER.  THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, * WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE, * IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING.  THOSE INTENDING * TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE * OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING * PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS. * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE * IS WITH THE USER.  SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE * IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY * OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY * OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING, * REPAIR OR CORRECTION.  UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC., * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO * THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR * CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, * DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR * MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF * SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY * OF SUCH DAMAGES.  THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT * FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR * RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING * FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT * LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE * JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY * TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE * ("HIGH RISK ACTIVITIES").  LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS * OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.  USER WILL NOT * KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE * NOTICE SPECIFIED IN THIS SECTION. *  * __END_OF_JASPER_LICENSE__ *//******************************************************************************\* Includes.\******************************************************************************/#include <assert.h>#include "jasper/jas_types.h"#include "jasper/jas_tvp.h"#include "jasper/jas_stream.h"#include "jasper/jas_image.h"#include "jasper/jas_string.h"#include "jpg_jpeglib.h"#include "jpg_cod.h"/******************************************************************************\* Types.\******************************************************************************/typedef struct jpg_src_s {	/* Output buffer. */	JSAMPARRAY buffer;	/* Height of output buffer. */	JDIMENSION buffer_height;	/* The current row. */	JDIMENSION row;	/* The image used to hold the decompressed sample data. */	jas_image_t *image;	/* The row buffer. */	jas_matrix_t *data;	/* The error indicator.  If this is nonzero, something has gone wrong	  during decompression. */	int error;} jpg_src_t;static int jpg_copyfiletostream(jas_stream_t *out, FILE *in){	int c;	while ((c = fgetc(in)) != EOF) {		if (jas_stream_putc(out, c) == EOF) {			return -1;		}	}	return 0;}static void jpg_start_input(j_compress_ptr cinfo, struct jpg_src_s *sinfo){	sinfo->row = 0;}static JDIMENSION jpg_get_pixel_rows(j_compress_ptr cinfo, struct jpg_src_s *sinfo){	JSAMPLE *bufptr;	int i;	int cmptno;	int width;	width = jas_image_width(sinfo->image);	if (sinfo->error) {		return 0;	}	for (cmptno = 0; cmptno < cinfo->input_components; ++cmptno) {		if (jas_image_readcmpt(sinfo->image, cmptno, 0, sinfo->row, width, 1, sinfo->data)) {			;		}		bufptr = (sinfo->buffer[0]) + cmptno;		for (i = 0; i < width; ++i) {			*bufptr = jas_matrix_get(sinfo->data, 0, i);			bufptr += cinfo->input_components;		}	}	++sinfo->row;	return 1;}static void jpg_finish_input(j_compress_ptr cinfo, struct jpg_src_s *sinfo){}/******************************************************************************\* Code for save operation.\******************************************************************************//* Save an image to a stream in the the JPG format. */int jpg_encode(jas_image_t *image, jas_stream_t *out, char *optstr){	JDIMENSION numscanlines;	struct jpeg_compress_struct cinfo;	struct jpeg_error_mgr jerr;	uint_fast32_t width;	uint_fast32_t height;	int numcmpts;	jpg_src_t src_mgr_buf;	jpg_src_t *src_mgr = &src_mgr_buf;	FILE *output_file;	int cmptno;	output_file = 0;	width = jas_image_width(image);	height = jas_image_height(image);	numcmpts = jas_image_numcmpts(image);	for (cmptno = 0; cmptno < numcmpts; ++cmptno) {		if (jas_image_cmptwidth(image, cmptno) != width ||		  jas_image_cmptheight(image, cmptno) != height ||		  jas_image_cmpttlx(image, cmptno) != 0 ||		  jas_image_cmpttly(image, cmptno) != 0 ||		  jas_image_cmpthstep(image, cmptno) != 1 ||		  jas_image_cmptvstep(image, cmptno) != 1 ||		  jas_image_cmptprec(image, cmptno) != 8 ||		  jas_image_cmptsgnd(image, cmptno) != false) {			fprintf(stderr, "The JPG encoder cannot handle an image with this geometry.\n");			return -1;		}	}	if (!(output_file = tmpfile())) {		goto error;	}	/* Create a JPEG compression object. */	cinfo.err = jpeg_std_error(&jerr);	jpeg_create_compress(&cinfo);	/* Specify data destination for compression */	jpeg_stdio_dest(&cinfo, output_file);	cinfo.in_color_space = (numcmpts == 3) ? JCS_RGB : JCS_GRAYSCALE;	cinfo.image_width = width;	cinfo.image_height = height;	cinfo.input_components = numcmpts;	jpeg_set_defaults(&cinfo);	src_mgr->error = 0;	src_mgr->image = image;	src_mgr->data = jas_matrix_create(1, width);	src_mgr->buffer = (*cinfo.mem->alloc_sarray)((j_common_ptr) &cinfo,	  JPOOL_IMAGE, (JDIMENSION) width * cinfo.input_components,	  (JDIMENSION) 1);	src_mgr->buffer_height = 1;	/* Read the input file header to obtain file size & colorspace. */	jpg_start_input(&cinfo, src_mgr);	/* Now that we know input colorspace, fix colorspace-dependent defaults */	jpeg_default_colorspace(&cinfo);	/* Start compressor */	jpeg_start_compress(&cinfo, TRUE);	/* Process data */	while (cinfo.next_scanline < cinfo.image_height) {		if ((numscanlines = jpg_get_pixel_rows(&cinfo, src_mgr)) <= 0) {			break;		}		jpeg_write_scanlines(&cinfo, src_mgr->buffer, numscanlines);	}	/* Finish compression and release memory */	jpg_finish_input(&cinfo, src_mgr);	jpeg_finish_compress(&cinfo);	jpeg_destroy_compress(&cinfo);	rewind(output_file);	jpg_copyfiletostream(out, output_file);	fclose(output_file);	output_file = 0;	return 0;error:	if (output_file) {		fclose(output_file);	}	return -1;}