openjpeg/libopenjpeg/openjpeg.c

211 lines
6.1 KiB
C

/*
* Copyright (c) 2005, Hervé Drolon, FreeImage Team
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "opj_includes.h"
opj_dinfo_t* opj_create_decompress(OPJ_CODEC_FORMAT format) {
opj_dinfo_t *dinfo = (opj_dinfo_t*)opj_malloc(sizeof(opj_dinfo_t));
if(!dinfo) return NULL;
dinfo->is_decompressor = true;
switch(format) {
case CODEC_J2K:
case CODEC_JPT:
/* get a J2K decoder handle */
dinfo->j2k_handle = (void*)j2k_create_decompress((opj_common_ptr)dinfo);
if(!dinfo->j2k_handle) {
opj_free(dinfo);
return NULL;
}
break;
case CODEC_JP2:
/* get a JP2 decoder handle */
dinfo->jp2_handle = (void*)jp2_create_decompress((opj_common_ptr)dinfo);
if(!dinfo->jp2_handle) {
opj_free(dinfo);
return NULL;
}
break;
default:
opj_free(dinfo);
return NULL;
}
dinfo->codec_format = format;
return dinfo;
}
void opj_destroy_decompress(opj_dinfo_t *dinfo) {
if(dinfo) {
/* destroy the codec */
switch(dinfo->codec_format) {
case CODEC_J2K:
case CODEC_JPT:
j2k_destroy_decompress((opj_j2k_t*)dinfo->j2k_handle);
break;
case CODEC_JP2:
jp2_destroy_decompress((opj_jp2_t*)dinfo->jp2_handle);
break;
}
/* destroy the decompressor */
opj_free(dinfo);
}
}
void opj_set_default_decoder_parameters(opj_dparameters_t *parameters) {
if(parameters) {
memset(parameters, 0, sizeof(opj_dparameters_t));
/* default decoding parameters */
parameters->cp_layer = 0;
parameters->cp_reduce = 0;
parameters->decod_format = -1;
parameters->cod_format = -1;
}
}
void opj_setup_decoder(opj_dinfo_t *dinfo, opj_dparameters_t *parameters) {
if(dinfo && parameters) {
switch(dinfo->codec_format) {
case CODEC_J2K:
case CODEC_JPT:
j2k_setup_decoder((opj_j2k_t*)dinfo->j2k_handle, parameters);
break;
case CODEC_JP2:
jp2_setup_decoder((opj_jp2_t*)dinfo->jp2_handle, parameters);
break;
}
}
}
opj_image_t* opj_decode(opj_dinfo_t *dinfo, opj_cio_t *cio) {
if(dinfo && cio) {
switch(dinfo->codec_format) {
case CODEC_J2K:
return j2k_decode((opj_j2k_t*)dinfo->j2k_handle, cio);
case CODEC_JPT:
return j2k_decode_jpt_stream((opj_j2k_t*)dinfo->j2k_handle, cio);
case CODEC_JP2:
return jp2_decode((opj_jp2_t*)dinfo->jp2_handle, cio);
}
}
return NULL;
}
opj_cinfo_t* opj_create_compress(OPJ_CODEC_FORMAT format) {
opj_cinfo_t *cinfo = (opj_cinfo_t*)opj_malloc(sizeof(opj_cinfo_t));
if(!cinfo) return NULL;
cinfo->is_decompressor = false;
switch(format) {
case CODEC_J2K:
/* get a J2K coder handle */
cinfo->j2k_handle = (void*)j2k_create_compress((opj_common_ptr)cinfo);
if(!cinfo->j2k_handle) {
opj_free(cinfo);
return NULL;
}
break;
case CODEC_JP2:
/* get a JP2 coder handle */
cinfo->jp2_handle = (void*)jp2_create_compress((opj_common_ptr)cinfo);
if(!cinfo->jp2_handle) {
opj_free(cinfo);
return NULL;
}
break;
default:
opj_free(cinfo);
return NULL;
}
cinfo->codec_format = format;
return cinfo;
}
void opj_destroy_compress(opj_cinfo_t *cinfo) {
if(cinfo) {
/* destroy the codec */
switch(cinfo->codec_format) {
case CODEC_J2K:
j2k_destroy_decompress((opj_j2k_t*)cinfo->j2k_handle);
break;
case CODEC_JP2:
jp2_destroy_decompress((opj_jp2_t*)cinfo->jp2_handle);
break;
}
/* destroy the decompressor */
opj_free(cinfo);
}
}
void opj_set_default_encoder_parameters(opj_cparameters_t *parameters) {
if(parameters) {
memset(parameters, 0, sizeof(opj_cparameters_t));
/* default coding parameters */
parameters->numresolution = 6;
parameters->cblockw_init = 64;
parameters->cblockh_init = 64;
parameters->prog_order = LRCP;
parameters->roi_compno = -1; /* no ROI */
parameters->subsampling_dx = 1;
parameters->subsampling_dy = 1;
parameters->decod_format = -1;
parameters->cod_format = -1;
}
}
void opj_setup_encoder(opj_cinfo_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image) {
if(cinfo && parameters && image) {
switch(cinfo->codec_format) {
case CODEC_J2K:
j2k_setup_encoder((opj_j2k_t*)cinfo->j2k_handle, parameters, image);
break;
case CODEC_JP2:
jp2_setup_encoder((opj_jp2_t*)cinfo->jp2_handle, parameters, image);
break;
}
}
}
bool opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index) {
if(cinfo && cio && image) {
switch(cinfo->codec_format) {
case CODEC_J2K:
return j2k_encode((opj_j2k_t*)cinfo->j2k_handle, cio, image, index);
case CODEC_JP2:
return jp2_encode((opj_jp2_t*)cinfo->jp2_handle, cio, image, index);
}
}
return false;
}