4 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
5 * Copyright (c) 2002-2014, Professor Benoit Macq
6 * Copyright (c) 2010-2011, Kaori Hagihara
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
36 #include "jp2k_decoder.h"
40 static void error_callback(const char *msg, void *client_data);
41 static void warning_callback(const char *msg, void *client_data);
42 static void info_callback(const char *msg, void *client_data);
44 static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox);
46 Byte_t * j2k_to_pnm(const char *fn, ihdrbox_param_t **ihdrbox)
48 Byte_t *pnmstream = NULL;
49 opj_dparameters_t parameters; /* decompression parameters */
50 opj_image_t *image = NULL;
51 opj_codec_t *l_codec = NULL; /* handle to a decompressor */
52 opj_stream_t *l_stream = NULL;
54 /* set decoding parameters to default values */
55 opj_set_default_decoder_parameters(¶meters);
57 /* set a byte stream */
58 l_stream = opj_stream_create_default_file_stream(fn, OPJ_TRUE);
60 fprintf(stderr, "ERROR -> failed to create the stream from the file\n");
64 /* decode the code-stream */
65 /* ---------------------- */
67 /* JPEG-2000 codestream */
68 /* get a decoder handle */
69 l_codec = opj_create_decompress(OPJ_CODEC_J2K);
71 /* catch events using our callbacks and give a local context */
72 opj_set_info_handler(l_codec, info_callback, 00);
73 opj_set_warning_handler(l_codec, warning_callback, 00);
74 opj_set_error_handler(l_codec, error_callback, 00);
76 /* setup the decoder decoding parameters using user parameters */
77 if (!opj_setup_decoder(l_codec, ¶meters)) {
78 fprintf(stderr, "ERROR -> j2k_dump: failed to setup the decoder\n");
79 opj_stream_destroy(l_stream);
80 opj_destroy_codec(l_codec);
84 /* Read the main header of the codestream and if necessary the JP2 boxes*/
85 if (! opj_read_header(l_stream, l_codec, &image)) {
86 fprintf(stderr, "ERROR -> j2k_to_image: failed to read the header\n");
87 opj_stream_destroy(l_stream);
88 opj_destroy_codec(l_codec);
89 opj_image_destroy(image);
93 #ifdef TODO /*decode area could be set from j2k_to_pnm call, modify the protocol between JPIP viewer and opj_dec_server*/
94 if (! opj_set_decode_area(l_codec, image, parameters.DA_x0, parameters.DA_y0,
95 parameters.DA_x1, parameters.DA_y1)) {
96 fprintf(stderr, "ERROR -> j2k_to_image: failed to set the decoded area\n");
97 opj_stream_destroy(l_stream);
98 opj_destroy_codec(l_codec);
99 opj_image_destroy(image);
104 /* Get the decoded image */
105 if (!(opj_decode(l_codec, l_stream, image) &&
106 opj_end_decompress(l_codec, l_stream))) {
107 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
108 opj_stream_destroy(l_stream);
109 opj_destroy_codec(l_codec);
110 opj_image_destroy(image);
114 fprintf(stderr, "image is decoded!\n");
116 /* close the byte stream */
117 opj_stream_destroy(l_stream);
119 /* create output image */
120 /* ------------------- */
121 if ((pnmstream = imagetopnm(image, ihdrbox)) == NULL) {
122 fprintf(stderr, "PNM image not generated\n");
125 /* free remaining structures */
127 opj_destroy_codec(l_codec);
130 /* free image data structure */
131 opj_image_destroy(image);
138 sample error callback expecting a FILE* client object
140 static void error_callback(const char *msg, void *client_data)
142 FILE *stream = (FILE*)client_data;
143 fprintf(stream, "[ERROR] %s", msg);
146 sample warning callback expecting a FILE* client object
148 static void warning_callback(const char *msg, void *client_data)
150 FILE *stream = (FILE*)client_data;
151 fprintf(stream, "[WARNING] %s", msg);
154 sample debug callback expecting no client object
156 static void info_callback(const char *msg, void *client_data)
160 /* fprintf(stdout, "[INFO] %s", msg); */
164 static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox)
166 OPJ_UINT32 adjustR, adjustG = 0, adjustB = 0;
168 Byte_t *pix = NULL, *ptr = NULL;
172 if ((*ihdrbox)->nc != image->numcomps) {
174 "Exception: num of components not identical, codestream: %d, ihdrbox: %d\n",
175 image->numcomps, (*ihdrbox)->nc);
178 if ((*ihdrbox)->width != image->comps[0].w) {
179 (*ihdrbox)->width = image->comps[0].w;
182 if ((*ihdrbox)->height != image->comps[0].h) {
183 (*ihdrbox)->height = image->comps[0].h;
186 if ((*ihdrbox)->bpc != image->comps[0].prec) {
188 "Exception: bits per component not identical, codestream: %d, ihdrbox: %d\n",
189 image->comps[0].prec, (*ihdrbox)->bpc);
192 *ihdrbox = (ihdrbox_param_t *)malloc(sizeof(ihdrbox_param_t));
193 (*ihdrbox)->width = image->comps[0].w;
194 (*ihdrbox)->height = image->comps[0].h;
195 assert(image->comps[0].prec < 256);
196 (*ihdrbox)->bpc = (Byte_t)image->comps[0].prec;
197 assert(image->numcomps < USHRT_MAX);
198 (*ihdrbox)->nc = (Byte2_t)image->numcomps;
201 datasize = (image->numcomps) * (image->comps[0].w) * (image->comps[0].h);
203 if (image->comps[0].prec > 8) {
204 adjustR = image->comps[0].prec - 8;
205 printf("PNM CONVERSION: Truncating component 0 from %d bits to 8 bits\n",
206 image->comps[0].prec);
211 if (image->numcomps == 3) {
212 if (image->comps[1].prec > 8) {
213 adjustG = image->comps[1].prec - 8;
214 printf("PNM CONVERSION: Truncating component 1 from %d bits to 8 bits\n",
215 image->comps[1].prec);
220 if (image->comps[2].prec > 8) {
221 adjustB = image->comps[2].prec - 8;
222 printf("PNM CONVERSION: Truncating component 2 from %d bits to 8 bits\n",
223 image->comps[2].prec);
229 pix = (Byte_t *)malloc(datasize);
232 for (i = 0; i < image->comps[0].w * image->comps[0].h; i++) {
234 r = image->comps[0].data[i];
235 r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
237 /* if( adjustR > 0) */
238 *(ptr++) = (Byte_t)((r >> adjustR) + ((r >> (adjustR - 1)) % 2));
240 if (image->numcomps == 3) {
241 g = image->comps[1].data[i];
242 g += (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
243 *(ptr++) = (Byte_t)((g >> adjustG) + ((g >> (adjustG - 1)) % 2));
245 b = image->comps[2].data[i];
246 b += (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
247 *(ptr++) = (Byte_t)((b >> adjustB) + ((b >> (adjustB - 1)) % 2));