4 * Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
5 * Copyright (c) 2002-2011, 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( FILE *fp, 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;
56 /* set decoding parameters to default values */
57 opj_set_default_decoder_parameters(¶meters);
59 /* set a byte stream */
60 l_stream = opj_stream_create_default_file_stream( fp, 1);
62 fprintf(stderr, "ERROR -> failed to create the stream from the file\n");
66 /* decode the code-stream */
67 /* ---------------------- */
69 /* JPEG-2000 codestream */
70 /* get a decoder handle */
71 l_codec = opj_create_decompress(OPJ_CODEC_J2K);
73 /* catch events using our callbacks and give a local context */
74 opj_set_info_handler(l_codec, info_callback,00);
75 opj_set_warning_handler(l_codec, warning_callback,00);
76 opj_set_error_handler(l_codec, error_callback,00);
78 /* setup the decoder decoding parameters using user parameters */
79 if ( !opj_setup_decoder(l_codec, ¶meters) ){
80 fprintf(stderr, "ERROR -> j2k_dump: failed to setup the decoder\n");
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, parameters.DA_x1, parameters.DA_y1)){
95 fprintf(stderr, "ERROR -> j2k_to_image: failed to set the decoded area\n");
96 opj_stream_destroy(l_stream);
97 opj_destroy_codec(l_codec);
98 opj_image_destroy(image);
103 /* Get the decoded image */
104 if ( !( opj_decode(l_codec, l_stream, image) && opj_end_decompress(l_codec,l_stream) ) ) {
105 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
106 opj_stream_destroy(l_stream);
107 opj_destroy_codec(l_codec);
108 opj_image_destroy(image);
112 fprintf(stderr, "image is decoded!\n");
114 /* close the byte stream */
115 opj_stream_destroy(l_stream);
117 /* create output image */
118 /* ------------------- */
119 if( (pnmstream = imagetopnm( image, ihdrbox))==NULL)
120 fprintf( stderr, "PNM image not generated\n");
122 /* free remaining structures */
124 opj_destroy_codec(l_codec);
127 /* free image data structure */
128 opj_image_destroy(image);
135 sample error callback expecting a FILE* client object
137 static void error_callback(const char *msg, void *client_data) {
138 FILE *stream = (FILE*)client_data;
139 fprintf(stream, "[ERROR] %s", msg);
142 sample warning callback expecting a FILE* client object
144 static void warning_callback(const char *msg, void *client_data) {
145 FILE *stream = (FILE*)client_data;
146 fprintf(stream, "[WARNING] %s", msg);
149 sample debug callback expecting no client object
151 static void info_callback(const char *msg, void *client_data) {
154 /* fprintf(stdout, "[INFO] %s", msg); */
158 static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox)
160 OPJ_UINT32 adjustR, adjustG=0, adjustB=0;
162 Byte_t *pix=NULL, *ptr=NULL;
166 if( (*ihdrbox)->nc != image->numcomps)
167 fprintf( stderr, "Exception: num of components not identical, codestream: %d, ihdrbox: %d\n", image->numcomps, (*ihdrbox)->nc);
169 if( (*ihdrbox)->width != image->comps[0].w)
170 (*ihdrbox)->width = image->comps[0].w;
172 if( (*ihdrbox)->height != image->comps[0].h)
173 (*ihdrbox)->height = image->comps[0].h;
175 if( (*ihdrbox)->bpc != image->comps[0].prec)
176 fprintf( stderr, "Exception: bits per component not identical, codestream: %d, ihdrbox: %d\n", image->comps[0].prec, (*ihdrbox)->bpc);
179 *ihdrbox = (ihdrbox_param_t *)malloc( sizeof(ihdrbox_param_t));
180 (*ihdrbox)->width = image->comps[0].w;
181 (*ihdrbox)->height = image->comps[0].h;
182 assert( image->comps[0].prec < 256 );
183 (*ihdrbox)->bpc = (Byte_t)image->comps[0].prec;
184 assert( image->numcomps < USHRT_MAX );
185 (*ihdrbox)->nc = (Byte2_t)image->numcomps;
188 datasize = (image->numcomps)*(image->comps[0].w)*(image->comps[0].h);
190 if (image->comps[0].prec > 8) {
191 adjustR = image->comps[0].prec - 8;
192 printf("PNM CONVERSION: Truncating component 0 from %d bits to 8 bits\n", image->comps[0].prec);
197 if( image->numcomps == 3){
198 if (image->comps[1].prec > 8) {
199 adjustG = image->comps[1].prec - 8;
200 printf("PNM CONVERSION: Truncating component 1 from %d bits to 8 bits\n", image->comps[1].prec);
205 if (image->comps[2].prec > 8) {
206 adjustB = image->comps[2].prec - 8;
207 printf("PNM CONVERSION: Truncating component 2 from %d bits to 8 bits\n", image->comps[2].prec);
213 pix = (Byte_t *)malloc( datasize);
216 for( i = 0; i < image->comps[0].w * image->comps[0].h; i++){
218 r = image->comps[0].data[i];
219 r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
221 /* if( adjustR > 0) */
222 *(ptr++) = (Byte_t) ((r >> adjustR)+((r >> (adjustR-1))%2));
224 if( image->numcomps == 3){
225 g = image->comps[1].data[i];
226 g += (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
227 *(ptr++) = (Byte_t) ((g >> adjustG)+((g >> (adjustG-1))%2));
229 b = image->comps[2].data[i];
230 b += (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
231 *(ptr++) = (Byte_t) ((b >> adjustB)+((b >> (adjustB-1))%2));