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                 default:
  56                         opj_free(dinfo);
  57                         return NULL;
  58         }
  59
  60         dinfo->codec_format = format;
  61
  62         return dinfo;
  63 }
  64
  65 void opj_destroy_decompress(opj_dinfo_t *dinfo) {
  66         if(dinfo) {
  67                 /* destroy the codec */
  68                 switch(dinfo->codec_format) {
  69                         case CODEC_J2K:
  70                         case CODEC_JPT:
  71                                 j2k_destroy_decompress((opj_j2k_t*)dinfo->j2k_handle);
  72                                 break;
  73                         case CODEC_JP2:
  74                                 jp2_destroy_decompress((opj_jp2_t*)dinfo->jp2_handle);
  75                                 break;
  76                 }
  77                 /* destroy the decompressor */
  78                 opj_free(dinfo);
  79         }
  80 }
  81
  82 void opj_set_default_decoder_parameters(opj_dparameters_t *parameters) {
  83         if(parameters) {
  84                 memset(parameters, 0, sizeof(opj_dparameters_t));
  85                 /* default decoding parameters */
  86                 parameters->cp_layer = 0;
  87                 parameters->cp_reduce = 0;
  88
  89                 parameters->decod_format = -1;
  90                 parameters->cod_format = -1;
  91         }
  92 }
  93
  94 void opj_setup_decoder(opj_dinfo_t *dinfo, opj_dparameters_t *parameters) {
  95         if(dinfo && parameters) {
  96                 switch(dinfo->codec_format) {
  97                         case CODEC_J2K:
  98                         case CODEC_JPT:
  99                                 j2k_setup_decoder((opj_j2k_t*)dinfo->j2k_handle, parameters);
 100                                 break;
 101                         case CODEC_JP2:
 102                                 jp2_setup_decoder((opj_jp2_t*)dinfo->jp2_handle, parameters);
 103                                 break;
 104                 }
 105         }
 106 }
 107
 108 opj_image_t* opj_decode(opj_dinfo_t *dinfo, opj_cio_t *cio) {
 109         if(dinfo && cio) {
 110                 switch(dinfo->codec_format) {
 111                         case CODEC_J2K:
 112                                 return j2k_decode((opj_j2k_t*)dinfo->j2k_handle, cio);
 113                         case CODEC_JPT:
 114                                 return j2k_decode_jpt_stream((opj_j2k_t*)dinfo->j2k_handle, cio);
 115                         case CODEC_JP2:
 116                                 return jp2_decode((opj_jp2_t*)dinfo->jp2_handle, cio);
 117                 }
 118         }
 119
 120         return NULL;
 121 }
 122
 123 opj_cinfo_t* opj_create_compress(OPJ_CODEC_FORMAT format) {
 124         opj_cinfo_t *cinfo = (opj_cinfo_t*)opj_malloc(sizeof(opj_cinfo_t));
 125         if(!cinfo) return NULL;
 126         cinfo->is_decompressor = false;
 127         switch(format) {
 128                 case CODEC_J2K:
 129                         /* get a J2K coder handle */
 130                         cinfo->j2k_handle = (void*)j2k_create_compress((opj_common_ptr)cinfo);
 131                         if(!cinfo->j2k_handle) {
 132                                 opj_free(cinfo);
 133                                 return NULL;
 134                         }
 135                         break;
 136                 case CODEC_JP2:
 137                         /* get a JP2 coder handle */
 138                         cinfo->jp2_handle = (void*)jp2_create_compress((opj_common_ptr)cinfo);
 139                         if(!cinfo->jp2_handle) {
 140                                 opj_free(cinfo);
 141                                 return NULL;
 142                         }
 143                         break;
 144                 default:
 145                         opj_free(cinfo);
 146                         return NULL;
 147         }
 148
 149         cinfo->codec_format = format;
 150
 151         return cinfo;
 152 }
 153
 154 void opj_destroy_compress(opj_cinfo_t *cinfo) {
 155         if(cinfo) {
 156                 /* destroy the codec */
 157                 switch(cinfo->codec_format) {
 158                         case CODEC_J2K:
 159                                 j2k_destroy_decompress((opj_j2k_t*)cinfo->j2k_handle);
 160                                 break;
 161                         case CODEC_JP2:
 162                                 jp2_destroy_decompress((opj_jp2_t*)cinfo->jp2_handle);
 163                                 break;
 164                 }
 165                 /* destroy the decompressor */
 166                 opj_free(cinfo);
 167         }
 168 }
 169
 170 void opj_set_default_encoder_parameters(opj_cparameters_t *parameters) {
 171         if(parameters) {
 172                 memset(parameters, 0, sizeof(opj_cparameters_t));
 173                 /* default coding parameters */
 174                 parameters->numresolution = 6;
 175                 parameters->cblockw_init = 64;
 176                 parameters->cblockh_init = 64;
 177                 parameters->prog_order = LRCP;
 178                 parameters->roi_compno = -1;            /* no ROI */
 179                 parameters->subsampling_dx = 1;
 180                 parameters->subsampling_dy = 1;
 181
 182                 parameters->decod_format = -1;
 183                 parameters->cod_format = -1;
 184         }
 185 }
 186
 187 void opj_setup_encoder(opj_cinfo_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image) {
 188         if(cinfo && parameters && image) {
 189                 switch(cinfo->codec_format) {
 190                         case CODEC_J2K:
 191                                 j2k_setup_encoder((opj_j2k_t*)cinfo->j2k_handle, parameters, image);
 192                                 break;
 193                         case CODEC_JP2:
 194                                 jp2_setup_encoder((opj_jp2_t*)cinfo->jp2_handle, parameters, image);
 195                                 break;
 196                 }
 197         }
 198 }
 199
 200 bool opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index) {
 201         if(cinfo && cio && image) {
 202                 switch(cinfo->codec_format) {
 203                         case CODEC_J2K:
 204                                 return j2k_encode((opj_j2k_t*)cinfo->j2k_handle, cio, image, index);
 205                         case CODEC_JP2:
 206                                 return jp2_encode((opj_jp2_t*)cinfo->jp2_handle, cio, image, index);
 207                 }
 208         }
 209
 210         return false;
 211 }
 212
 213