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---
bmp_enc.c (11565B)
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1 /*
2 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
3 * British Columbia.
4 * Copyright (c) 2001-2003 Michael David Adams.
5 * All rights reserved.
6 */
7
8 /* __START_OF_JASPER_LICENSE__
9 *
10 * JasPer License Version 2.0
11 *
12 * Copyright (c) 1999-2000 Image Power, Inc.
13 * Copyright (c) 1999-2000 The University of British Columbia
14 * Copyright (c) 2001-2003 Michael David Adams
15 *
16 * All rights reserved.
17 *
18 * Permission is hereby granted, free of charge, to any person (the
19 * "User") obtaining a copy of this software and associated documentation
20 * files (the "Software"), to deal in the Software without restriction,
21 * including without limitation the rights to use, copy, modify, merge,
22 * publish, distribute, and/or sell copies of the Software, and to permit
23 * persons to whom the Software is furnished to do so, subject to the
24 * following conditions:
25 *
26 * 1. The above copyright notices and this permission notice (which
27 * includes the disclaimer below) shall be included in all copies or
28 * substantial portions of the Software.
29 *
30 * 2. The name of a copyright holder shall not be used to endorse or
31 * promote products derived from the Software without specific prior
32 * written permission.
33 *
34 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
35 * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
36 * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
37 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
38 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
39 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
40 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
41 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
42 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
43 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
44 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
45 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
46 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
47 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
48 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
49 * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
50 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
51 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
52 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
53 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
54 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
55 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
56 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
57 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
58 * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
59 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
60 *
61 * __END_OF_JASPER_LICENSE__
62 */
63
64 /*
65 * Windows Bitmap File Library
66 *
67 * $Id: bmp_enc.c 1918 2005-07-24 14:12:08Z baford $
68 */
69
70 /******************************************************************************\
71 * Includes.
72 \******************************************************************************/
73
74 #include <assert.h>
75
76 #include "jasper/jas_types.h"
77 #include "jasper/jas_stream.h"
78 #include "jasper/jas_image.h"
79 #include "jasper/jas_debug.h"
80
81 #include "bmp_enc.h"
82 #include "bmp_cod.h"
83
84 /******************************************************************************\
85 * Local prototypes.
86 \******************************************************************************/
87
88 static int bmp_puthdr(jas_stream_t *out, bmp_hdr_t *hdr);
89 static int bmp_putinfo(jas_stream_t *out, bmp_info_t *info);
90 static int bmp_putdata(jas_stream_t *out, bmp_info_t *info, jas_image_t *image, int *cmpts);
91 static int bmp_putint16(jas_stream_t *in, int_fast16_t val);
92 static int bmp_putint32(jas_stream_t *out, int_fast32_t val);
93
94 /******************************************************************************\
95 * Interface functions.
96 \******************************************************************************/
97
98 int bmp_encode(jas_image_t *image, jas_stream_t *out, char *optstr)
99 {
100 jas_image_coord_t width;
101 jas_image_coord_t height;
102 int depth;
103 int cmptno;
104 bmp_hdr_t hdr;
105 bmp_info_t *info;
106 int_fast32_t datalen;
107 int numpad;
108 bmp_enc_t encbuf;
109 bmp_enc_t *enc = &encbuf;
110 jas_clrspc_t clrspc;
111
112 if (optstr) {
113 fprintf(stderr, "warning: ignoring BMP encoder options\n");
114 }
115
116 clrspc = jas_image_clrspc(image);
117 switch (jas_clrspc_fam(clrspc)) {
118 case JAS_CLRSPC_FAM_RGB:
119 if (clrspc != JAS_CLRSPC_SRGB)
120 jas_eprintf("warning: inaccurate color\n");
121 break;
122 case JAS_CLRSPC_FAM_GRAY:
123 if (clrspc != JAS_CLRSPC_SGRAY)
124 jas_eprintf("warning: inaccurate color\n");
125 break;
126 default:
127 jas_eprintf("error: BMP format does not support color space\n");
128 return -1;
129 break;
130 }
131
132 switch (jas_clrspc_fam(clrspc)) {
133 case JAS_CLRSPC_FAM_RGB:
134 enc->numcmpts = 3;
135 if ((enc->cmpts[0] = jas_image_getcmptbytype(image,
136 JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R))) < 0 ||
137 (enc->cmpts[1] = jas_image_getcmptbytype(image,
138 JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G))) < 0 ||
139 (enc->cmpts[2] = jas_image_getcmptbytype(image,
140 JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B))) < 0) {
141 jas_eprintf("error: missing color component\n");
142 return -1;
143 }
144 break;
145 case JAS_CLRSPC_FAM_GRAY:
146 enc->numcmpts = 1;
147 if ((enc->cmpts[0] = jas_image_getcmptbytype(image,
148 JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y))) < 0) {
149 jas_eprintf("error: missing color component\n");
150 return -1;
151 }
152 break;
153 default:
154 abort();
155 break;
156 }
157
158 width = jas_image_cmptwidth(image, enc->cmpts[0]);
159 height = jas_image_cmptheight(image, enc->cmpts[0]);
160 depth = jas_image_cmptprec(image, enc->cmpts[0]);
161
162 /* Check to ensure that the image to be saved can actually be represented
163 using the BMP format. */
164 for (cmptno = 0; cmptno < enc->numcmpts; ++cmptno) {
165 if (jas_image_cmptwidth(image, enc->cmpts[cmptno]) != width ||
166 jas_image_cmptheight(image, enc->cmpts[cmptno]) != height ||
167 jas_image_cmptprec(image, enc->cmpts[cmptno]) != depth ||
168 jas_image_cmptsgnd(image, enc->cmpts[cmptno]) != false ||
169 jas_image_cmpttlx(image, enc->cmpts[cmptno]) != 0 ||
170 jas_image_cmpttly(image, enc->cmpts[cmptno]) != 0) {
171 fprintf(stderr, "The BMP format cannot be used to represent an image with this geometry.\n");
172 return -1;
173 }
174 }
175
176 /* The component depths must be 1, 4, or 8. */
177 if (depth != 1 && depth != 4 && depth != 8) {
178 return -1;
179 }
180
181 numpad = (width * enc->numcmpts) % 4;
182 if (numpad) {
183 numpad = 4 - numpad;
184 }
185 datalen = (enc->numcmpts * width + numpad) * height;
186
187 if (!(info = bmp_info_create())) {
188 return -1;
189 }
190 info->len = BMP_INFOLEN;
191 info->width = width;
192 info->height = height;
193 info->numplanes = 1;
194 info->depth = enc->numcmpts * depth;
195 info->enctype = BMP_ENC_RGB;
196 info->siz = datalen;
197 info->hres = 0;
198 info->vres = 0;
199 info->numcolors = (enc->numcmpts == 1) ? 256 : 0;
200 info->mincolors = 0;
201
202 hdr.magic = BMP_MAGIC;
203 hdr.siz = BMP_HDRLEN + BMP_INFOLEN + 0 + datalen;
204 hdr.off = BMP_HDRLEN + BMP_INFOLEN + BMP_PALLEN(info);
205
206 /* Write the bitmap header. */
207 if (bmp_puthdr(out, &hdr)) {
208 return -1;
209 }
210
211 /* Write the bitmap information. */
212 if (bmp_putinfo(out, info)) {
213 return -1;
214 }
215
216 /* Write the bitmap data. */
217 if (bmp_putdata(out, info, image, enc->cmpts)) {
218 return -1;
219 }
220
221 bmp_info_destroy(info);
222
223 return 0;
224 }
225
226 /******************************************************************************\
227 * Code for aggregate types.
228 \******************************************************************************/
229
230 static int bmp_puthdr(jas_stream_t *out, bmp_hdr_t *hdr)
231 {
232 assert(hdr->magic == BMP_MAGIC);
233 if (bmp_putint16(out, hdr->magic) || bmp_putint32(out, hdr->siz) ||
234 bmp_putint32(out, 0) || bmp_putint32(out, hdr->off)) {
235 return -1;
236 }
237 return 0;
238 }
239
240 static int bmp_putinfo(jas_stream_t *out, bmp_info_t *info)
241 {
242 int i;
243
244 info->len = 40;
245 if (bmp_putint32(out, info->len) ||
246 bmp_putint32(out, info->width) ||
247 bmp_putint32(out, info->height) ||
248 bmp_putint16(out, info->numplanes) ||
249 bmp_putint16(out, info->depth) ||
250 bmp_putint32(out, info->enctype) ||
251 bmp_putint32(out, info->siz) ||
252 bmp_putint32(out, info->hres) ||
253 bmp_putint32(out, info->vres) ||
254 bmp_putint32(out, info->numcolors) ||
255 bmp_putint32(out, info->mincolors)) {
256 return -1;
257 }
258
259 for (i = 0; i < info->numcolors; ++i)
260 {
261 if (jas_stream_putc(out, i) == EOF ||
262 jas_stream_putc(out, i) == EOF ||
263 jas_stream_putc(out, i) == EOF ||
264 jas_stream_putc(out, 0) == EOF)
265 {
266 return -1;
267 }
268 }
269
270 return 0;
271 }
272
273 static int bmp_putdata(jas_stream_t *out, bmp_info_t *info, jas_image_t *image,
274 int *cmpts)
275 {
276 int i;
277 int j;
278 jas_matrix_t *bufs[3];
279 int numpad;
280 unsigned char red;
281 unsigned char grn;
282 unsigned char blu;
283 int ret;
284 int numcmpts;
285 int v;
286 int cmptno;
287
288 numcmpts = (info->depth == 24) ? 3:1;
289
290 /* We do not support palettized images. */
291 if (BMP_HASPAL(info) && numcmpts == 3) {
292 fprintf(stderr, "no palettized image support for BMP format\n");
293 return -1;
294 }
295
296 ret = 0;
297 for (i = 0; i < numcmpts; ++i) {
298 bufs[i] = 0;
299 }
300
301 /* Create temporary matrices to hold component data. */
302 for (i = 0; i < numcmpts; ++i) {
303 if (!(bufs[i] = jas_matrix_create(1, info->width))) {
304 ret = -1;
305 goto bmp_putdata_done;
306 }
307 }
308
309 /* Calculate number of padding bytes per row of image data. */
310 numpad = (numcmpts * info->width) % 4;
311 if (numpad) {
312 numpad = 4 - numpad;
313 }
314
315 /* Put the image data. */
316 for (i = info->height - 1; i >= 0; --i) {
317 for (cmptno = 0; cmptno < numcmpts; ++cmptno) {
318 if (jas_image_readcmpt(image, cmptno, 0, i, info->width,
319 1, bufs[cmpts[cmptno]])) {
320 ret = -1;
321 goto bmp_putdata_done;
322 }
323 }
324 for (j = 0; j < info->width; ++j) {
325 if (numcmpts == 3) {
326 red = (jas_matrix_getv(bufs[0], j));
327 grn = (jas_matrix_getv(bufs[1], j));
328 blu = (jas_matrix_getv(bufs[2], j));
329 if (jas_stream_putc(out, blu) == EOF ||
330 jas_stream_putc(out, grn) == EOF ||
331 jas_stream_putc(out, red) == EOF) {
332 ret = -1;
333 goto bmp_putdata_done;
334 }
335 } else if (numcmpts == 1) {
336 v = (jas_matrix_getv(bufs[cmpts[0]], j));
337 if (jas_stream_putc(out, v) == EOF) {
338 ret = -1;
339 goto bmp_putdata_done;
340 }
341 } else {
342 abort();
343 }
344 }
345 for (j = numpad; j > 0; --j) {
346 if (jas_stream_putc(out, 0) == EOF) {
347 ret = -1;
348 goto bmp_putdata_done;
349 }
350 }
351 }
352
353 bmp_putdata_done:
354 /* Destroy the temporary matrices. */
355 for (i = 0; i < numcmpts; ++i) {
356 if (bufs[i]) {
357 jas_matrix_destroy(bufs[i]);
358 }
359 }
360
361 return ret;
362 }
363
364 /******************************************************************************\
365 * Code for primitive types.
366 \******************************************************************************/
367
368 static int bmp_putint16(jas_stream_t *in, int_fast16_t val)
369 {
370 if (jas_stream_putc(in, val & 0xff) == EOF || jas_stream_putc(in, (val >> 8) &
371 0xff) == EOF) {
372 return -1;
373 }
374 return 0;
375 }
376
377 static int bmp_putint32(jas_stream_t *out, int_fast32_t val)
378 {
379 int n;
380 int_fast32_t v;
381
382 /* This code needs to be changed if we want to handle negative values. */
383 assert(val >= 0);
384 v = val;
385 for (n = 4;;) {
386 if (jas_stream_putc(out, v & 0xff) == EOF) {
387 return -1;
388 }
389 if (--n <= 0) {
390 break;
391 }
392 v >>= 8;
393 }
394 return 0;
395 }