libopenjpeg/openjpeg.c

   1 /*
   2  * Copyright (c) 2005, Herv� Drolon, FreeImage Team
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  18  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  19  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  20  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  22  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  23  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  24  * POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include "opj_includes.h"
  28
  29 const char * opj_version() {
  30     return OPENJPEG_VERSION;
  31 }
  32
  33 opj_dinfo_t* opj_create_decompress(OPJ_CODEC_FORMAT format) {
  34         opj_dinfo_t *dinfo = (opj_dinfo_t*)opj_malloc(sizeof(opj_dinfo_t));
  35         if(!dinfo) return NULL;
  36         dinfo->is_decompressor = true;
  37         switch(format) {
  38                 case CODEC_J2K:
  39                 case CODEC_JPT:
  40                         /* get a J2K decoder handle */
  41                         dinfo->j2k_handle = (void*)j2k_create_decompress((opj_common_ptr)dinfo);
  42                         if(!dinfo->j2k_handle) {
  43                                 opj_free(dinfo);
  44                                 return NULL;
  45                         }
  46                         break;
  47                 case CODEC_JP2:
  48                         /* get a JP2 decoder handle */
  49                         dinfo->jp2_handle = (void*)jp2_create_decompress((opj_common_ptr)dinfo);
  50                         if(!dinfo->jp2_handle) {
  51                                 opj_free(dinfo);
  52                                 return NULL;
  53                         }
  54                         break;
  55                 case CODEC_UNKNOWN:
  56                 default:
  57                         opj_free(dinfo);
  58                         return NULL;
  59         }
  60
  61         dinfo->codec_format = format;
  62
  63         return dinfo;
  64 }
  65
  66 void opj_destroy_decompress(opj_dinfo_t *dinfo) {
  67         if(dinfo) {
  68                 /* destroy the codec */
  69                 switch(dinfo->codec_format) {
  70                         case CODEC_J2K:
  71                         case CODEC_JPT:
  72                                 j2k_destroy_decompress((opj_j2k_t*)dinfo->j2k_handle);
  73                                 break;
  74                         case CODEC_JP2:
  75                                 jp2_destroy_decompress((opj_jp2_t*)dinfo->jp2_handle);
  76                                 break;
  77                         case CODEC_UNKNOWN:
  78                         default:
  79                                 break;
  80                 }
  81                 /* destroy the decompressor */
  82                 opj_free(dinfo);
  83         }
  84 }
  85
  86 void opj_set_default_decoder_parameters(opj_dparameters_t *parameters) {
  87         if(parameters) {
  88                 memset(parameters, 0, sizeof(opj_dparameters_t));
  89                 /* default decoding parameters */
  90                 parameters->cp_layer = 0;
  91                 parameters->cp_reduce = 0;
  92
  93                 parameters->decod_format = -1;
  94                 parameters->cod_format = -1;
  95         }
  96 }
  97
  98 void opj_setup_decoder(opj_dinfo_t *dinfo, opj_dparameters_t *parameters) {
  99         if(dinfo && parameters) {
 100                 switch(dinfo->codec_format) {
 101                         case CODEC_J2K:
 102                         case CODEC_JPT:
 103                                 j2k_setup_decoder((opj_j2k_t*)dinfo->j2k_handle, parameters);
 104                                 break;
 105                         case CODEC_JP2:
 106                                 jp2_setup_decoder((opj_jp2_t*)dinfo->jp2_handle, parameters);
 107                                 break;
 108                         case CODEC_UNKNOWN:
 109                         default:
 110                                 break;
 111                 }
 112         }
 113 }
 114
 115 opj_image_t* opj_decode(opj_dinfo_t *dinfo, opj_cio_t *cio) {
 116         if(dinfo && cio) {
 117                 switch(dinfo->codec_format) {
 118                         case CODEC_J2K:
 119                                 return j2k_decode((opj_j2k_t*)dinfo->j2k_handle, cio);
 120                         case CODEC_JPT:
 121                                 return j2k_decode_jpt_stream((opj_j2k_t*)dinfo->j2k_handle, cio);
 122                         case CODEC_JP2:
 123                                 return jp2_decode((opj_jp2_t*)dinfo->jp2_handle, cio);
 124                 }
 125         }
 126
 127         return NULL;
 128 }
 129
 130 opj_cinfo_t* opj_create_compress(OPJ_CODEC_FORMAT format) {
 131         opj_cinfo_t *cinfo = (opj_cinfo_t*)opj_malloc(sizeof(opj_cinfo_t));
 132         if(!cinfo) return NULL;
 133         cinfo->is_decompressor = false;
 134         switch(format) {
 135                 case CODEC_J2K:
 136                         /* get a J2K coder handle */
 137                         cinfo->j2k_handle = (void*)j2k_create_compress((opj_common_ptr)cinfo);
 138                         if(!cinfo->j2k_handle) {
 139                                 opj_free(cinfo);
 140                                 return NULL;
 141                         }
 142                         break;
 143                 case CODEC_JP2:
 144                         /* get a JP2 coder handle */
 145                         cinfo->jp2_handle = (void*)jp2_create_compress((opj_common_ptr)cinfo);
 146                         if(!cinfo->jp2_handle) {
 147                                 opj_free(cinfo);
 148                                 return NULL;
 149                         }
 150                         break;
 151                 case CODEC_JPT:
 152                 case CODEC_UNKNOWN:
 153                 default:
 154                         opj_free(cinfo);
 155                         return NULL;
 156         }
 157
 158         cinfo->codec_format = format;
 159
 160         return cinfo;
 161 }
 162
 163 void opj_destroy_compress(opj_cinfo_t *cinfo) {
 164         if(cinfo) {
 165                 /* destroy the codec */
 166                 switch(cinfo->codec_format) {
 167                         case CODEC_J2K:
 168                                 j2k_destroy_decompress((opj_j2k_t*)cinfo->j2k_handle);
 169                                 break;
 170                         case CODEC_JP2:
 171                                 jp2_destroy_decompress((opj_jp2_t*)cinfo->jp2_handle);
 172                                 break;
 173                         case CODEC_JPT:
 174                         case CODEC_UNKNOWN:
 175                         default:
 176                                 break;
 177                 }
 178                 /* destroy the decompressor */
 179                 opj_free(cinfo);
 180         }
 181 }
 182
 183 void opj_set_default_encoder_parameters(opj_cparameters_t *parameters) {
 184         if(parameters) {
 185                 memset(parameters, 0, sizeof(opj_cparameters_t));
 186                 /* default coding parameters */
 187                 parameters->numresolution = 6;
 188                 parameters->cblockw_init = 64;
 189                 parameters->cblockh_init = 64;
 190                 parameters->prog_order = LRCP;
 191                 parameters->roi_compno = -1;            /* no ROI */
 192                 parameters->subsampling_dx = 1;
 193                 parameters->subsampling_dy = 1;
 194
 195                 parameters->decod_format = -1;
 196                 parameters->cod_format = -1;
 197         }
 198 }
 199
 200 void opj_setup_encoder(opj_cinfo_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image) {
 201         if(cinfo && parameters && image) {
 202                 switch(cinfo->codec_format) {
 203                         case CODEC_J2K:
 204                                 j2k_setup_encoder((opj_j2k_t*)cinfo->j2k_handle, parameters, image);
 205                                 break;
 206                         case CODEC_JP2:
 207                                 jp2_setup_encoder((opj_jp2_t*)cinfo->jp2_handle, parameters, image);
 208                                 break;
 209                         case CODEC_JPT:
 210                         case CODEC_UNKNOWN:
 211                         default:
 212                                 break;
 213                 }
 214         }
 215 }
 216
 217 bool opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index) {
 218         if(cinfo && cio && image) {
 219                 switch(cinfo->codec_format) {
 220                         case CODEC_J2K:
 221                                 return j2k_encode((opj_j2k_t*)cinfo->j2k_handle, cio, image, index);
 222                         case CODEC_JP2:
 223                                 return jp2_encode((opj_jp2_t*)cinfo->jp2_handle, cio, image, index);
 224                         case CODEC_JPT:
 225                         case CODEC_UNKNOWN:
 226                         default:
 227                                 break;
 228                 }
 229         }
 230
 231         return false;
 232 }
 233
 234