2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
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5 * are granted under this license.
7 * Copyright (c) 2017, IntoPix SA <contact@intopix.com>
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36 #include "format_defs.h"
39 /* -------------------------------------------------------------------------- */
40 #define JP2_RFC3745_MAGIC "\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a"
41 #define JP2_MAGIC "\x0d\x0a\x87\x0a"
42 /* position 45: "\xff\x52" */
43 #define J2K_CODESTREAM_MAGIC "\xff\x4f\xff\x51"
45 static int infile_format(const char *fname)
48 unsigned char buf[12];
49 unsigned int l_nb_read;
51 reader = fopen(fname, "rb");
58 l_nb_read = (unsigned int)fread(buf, 1, 12, reader);
60 if (l_nb_read != 12) {
64 if (memcmp(buf, JP2_RFC3745_MAGIC, 12) == 0 || memcmp(buf, JP2_MAGIC, 4) == 0) {
66 } else if (memcmp(buf, J2K_CODESTREAM_MAGIC, 4) == 0) {
74 /* -------------------------------------------------------------------------- */
77 sample error debug callback expecting no client object
79 static void error_callback(const char *msg, void *client_data)
82 fprintf(stdout, "[ERROR] %s", msg);
85 sample warning debug callback expecting no client object
87 static void warning_callback(const char *msg, void *client_data)
90 fprintf(stdout, "[WARNING] %s", msg);
93 sample debug callback expecting no client object
95 static void info_callback(const char *msg, void *client_data)
99 /*fprintf(stdout, "[INFO] %s", msg);*/
104 const char* input_file,
114 opj_dparameters_t l_param;
115 opj_codec_t * l_codec = NULL;
116 opj_image_t * l_image = NULL;
117 opj_stream_t * l_stream = NULL;
120 if (x0 != 0 || x1 != 0 || y0 != 0 || y1 != 0) {
121 printf("Decoding %d,%d,%d,%d\n", x0, y0, x1, y1);
123 printf("Decoding full image\n");
127 l_stream = opj_stream_create_default_file_stream(input_file, OPJ_TRUE);
129 fprintf(stderr, "ERROR -> failed to create the stream from the file\n");
133 /* Set the default decoding parameters */
134 opj_set_default_decoder_parameters(&l_param);
137 l_param.decod_format = infile_format(input_file);
140 switch (l_param.decod_format) {
141 case J2K_CFMT: { /* JPEG-2000 codestream */
142 /* Get a decoder handle */
143 l_codec = opj_create_decompress(OPJ_CODEC_J2K);
146 case JP2_CFMT: { /* JPEG 2000 compressed image data */
147 /* Get a decoder handle */
148 l_codec = opj_create_decompress(OPJ_CODEC_JP2);
152 fprintf(stderr, "ERROR -> Not a valid JPEG2000 file!\n");
153 opj_stream_destroy(l_stream);
158 /* catch events using our callbacks and give a local context */
159 opj_set_info_handler(l_codec, info_callback, 00);
160 opj_set_warning_handler(l_codec, warning_callback, 00);
161 opj_set_error_handler(l_codec, error_callback, 00);
163 /* Setup the decoder decoding parameters using user parameters */
164 if (! opj_setup_decoder(l_codec, &l_param)) {
165 fprintf(stderr, "ERROR ->failed to setup the decoder\n");
166 opj_stream_destroy(l_stream);
167 opj_destroy_codec(l_codec);
171 /* Read the main header of the codestream and if necessary the JP2 boxes*/
172 if (! opj_read_header(l_stream, l_codec, &l_image)) {
173 fprintf(stderr, "ERROR -> failed to read the header\n");
174 opj_stream_destroy(l_stream);
175 opj_destroy_codec(l_codec);
180 opj_codestream_info_v2_t* pCodeStreamInfo = opj_get_cstr_info(l_codec);
182 *ptilew = pCodeStreamInfo->tdx;
185 *ptilew = pCodeStreamInfo->tdy;
187 //int numResolutions = pCodeStreamInfo->m_default_tile_info.tccp_info[0].numresolutions;
189 *pcblkw = 1U << pCodeStreamInfo->m_default_tile_info.tccp_info[0].cblkw;
192 *pcblkh = 1U << pCodeStreamInfo->m_default_tile_info.tccp_info[0].cblkh;
194 opj_destroy_cstr_info(&pCodeStreamInfo);
197 if (x0 != 0 || x1 != 0 || y0 != 0 || y1 != 0) {
198 if (!opj_set_decode_area(l_codec, l_image, x0, y0, x1, y1)) {
199 fprintf(stderr, "ERROR -> failed to set the decoded area\n");
200 opj_stream_destroy(l_stream);
201 opj_destroy_codec(l_codec);
202 opj_image_destroy(l_image);
207 /* Get the decoded image */
208 if (!(opj_decode(l_codec, l_stream, l_image))) {
209 fprintf(stderr, "ERROR -> failed to decode image!\n");
210 opj_stream_destroy(l_stream);
211 opj_destroy_codec(l_codec);
212 opj_image_destroy(l_image);
216 if (! opj_end_decompress(l_codec, l_stream)) {
217 opj_stream_destroy(l_stream);
218 opj_destroy_codec(l_codec);
219 opj_image_destroy(l_image);
224 opj_stream_destroy(l_stream);
225 opj_destroy_codec(l_codec);
229 OPJ_BOOL check_consistency(opj_image_t* p_image, opj_image_t* p_sub_image)
232 for (compno = 0; compno < p_image->numcomps; compno ++) {
234 OPJ_UINT32 shift_y = p_sub_image->comps[compno].y0 - p_image->comps[compno].y0;
235 OPJ_UINT32 shift_x = p_sub_image->comps[compno].x0 - p_image->comps[compno].x0;
236 OPJ_UINT32 image_w = p_image->comps[compno].w;
237 OPJ_UINT32 sub_image_w = p_sub_image->comps[compno].w;
238 for (y = 0; y < p_sub_image->comps[compno].h; y++) {
241 for (x = 0; x < sub_image_w; x++) {
242 OPJ_INT32 sub_image_val =
243 p_sub_image->comps[compno].data[y * sub_image_w + x];
244 OPJ_INT32 image_val =
245 p_image->comps[compno].data[(y + shift_y) * image_w + x + shift_x];
246 if (sub_image_val != image_val) {
248 "Difference found at subimage pixel (%u,%u) "
249 "of compno=%u: got %d, expected %d\n",
250 x, y, compno, sub_image_val, image_val);
259 static INLINE OPJ_UINT32 opj_uint_min(OPJ_UINT32 a, OPJ_UINT32 b)
261 return (a < b) ? a : b;
264 int main(int argc, char** argv)
266 opj_image_t * l_image = NULL;
267 opj_image_t * l_sub_image = NULL;
268 OPJ_INT32 da_x0 = 0, da_y0 = 0, da_x1 = 0, da_y1 = 0;
269 const char* input_file = NULL;
270 OPJ_UINT32 tilew, tileh, cblkw, cblkh;
273 OPJ_UINT32 step_x, step_y;
274 OPJ_BOOL quiet = OPJ_FALSE;
275 OPJ_UINT32 nsteps = 100;
279 "Usage: test_decode_area [-q] [-steps n] input_file_jp2_or_jk2 [x0 y0 x1 y1]\n");
285 for (iarg = 1; iarg < argc; iarg++) {
286 if (strcmp(argv[iarg], "-q") == 0) {
288 } else if (strcmp(argv[iarg], "-steps") == 0 && iarg + 1 < argc) {
289 nsteps = (OPJ_UINT32)atoi(argv[iarg + 1]);
291 } else if (input_file == NULL) {
292 input_file = argv[iarg];
293 } else if (iarg + 3 < argc) {
294 da_x0 = atoi(argv[iarg]);
295 da_y0 = atoi(argv[iarg + 1]);
296 da_x1 = atoi(argv[iarg + 2]);
297 da_y1 = atoi(argv[iarg + 3]);
303 l_image = decode(quiet, input_file, 0, 0, 0, 0,
304 &tilew, &tileh, &cblkw, &cblkh);
309 if (da_x0 != 0 || da_x1 != 0 || da_y0 != 0 || da_y1 != 0) {
310 l_sub_image = decode(quiet, input_file, da_x0, da_y0, da_x1, da_y1,
311 NULL, NULL, NULL, NULL);
313 fprintf(stderr, "decode failed for %d,%d,%d,%d\n",
314 da_x0, da_y0, da_x1, da_y1);
315 opj_image_destroy(l_sub_image);
316 opj_image_destroy(l_image);
320 if (!check_consistency(l_image, l_sub_image)) {
321 fprintf(stderr, "Consistency checked failed for %d,%d,%d,%d\n",
322 da_x0, da_y0, da_x1, da_y1);
323 opj_image_destroy(l_sub_image);
324 opj_image_destroy(l_image);
327 opj_image_destroy(l_sub_image);
328 opj_image_destroy(l_image);
332 w = l_image->x1 - l_image->x0;
333 h = l_image->y1 - l_image->y0;
334 step_x = w > nsteps ? w / nsteps : 1;
335 step_y = h > nsteps ? h / nsteps : 1;
336 for (y = 0; y < h; y += step_y) {
337 for (x = 0; x < w; x += step_x) {
338 da_x0 = (OPJ_INT32)(l_image->x0 + x);
339 da_y0 = (OPJ_INT32)(l_image->y0 + y);
340 da_x1 = (OPJ_INT32)opj_uint_min(l_image->x1, l_image->x0 + x + 1);
341 da_y1 = (OPJ_INT32)opj_uint_min(l_image->y1, l_image->y0 + y + 1);
342 l_sub_image = decode(quiet, input_file, da_x0, da_y0, da_x1, da_y1,
343 NULL, NULL, NULL, NULL);
345 fprintf(stderr, "decode failed for %d,%d,%d,%d\n",
346 da_x0, da_y0, da_x1, da_y1);
347 opj_image_destroy(l_sub_image);
348 opj_image_destroy(l_image);
352 if (!check_consistency(l_image, l_sub_image)) {
353 fprintf(stderr, "Consistency checked failed for %d,%d,%d,%d\n",
354 da_x0, da_y0, da_x1, da_y1);
355 opj_image_destroy(l_sub_image);
356 opj_image_destroy(l_image);
359 opj_image_destroy(l_sub_image);
361 if (step_x > 1 || step_y > 1) {
363 da_x0 = (OPJ_INT32)opj_uint_min(l_image->x1, (OPJ_UINT32)da_x0 + 1);
364 da_x1 = (OPJ_INT32)opj_uint_min(l_image->x1, (OPJ_UINT32)da_x1 + 1);
367 da_y0 = (OPJ_INT32)opj_uint_min(l_image->y1, (OPJ_UINT32)da_y0 + 1);
368 da_y1 = (OPJ_INT32)opj_uint_min(l_image->y1, (OPJ_UINT32)da_y1 + 1);
370 if (da_x0 < (OPJ_INT32)l_image->x1 && da_y0 < (OPJ_INT32)l_image->y1) {
371 l_sub_image = decode(quiet, input_file, da_x0, da_y0, da_x1, da_y1,
372 NULL, NULL, NULL, NULL);
374 fprintf(stderr, "decode failed for %d,%d,%d,%d\n",
375 da_x0, da_y0, da_x1, da_y1);
376 opj_image_destroy(l_sub_image);
377 opj_image_destroy(l_image);
381 if (!check_consistency(l_image, l_sub_image)) {
382 fprintf(stderr, "Consistency checked failed for %d,%d,%d,%d\n",
383 da_x0, da_y0, da_x1, da_y1);
384 opj_image_destroy(l_sub_image);
385 opj_image_destroy(l_image);
388 opj_image_destroy(l_sub_image);
394 opj_image_destroy(l_image);