/* * $Id$ * * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2014, Professor Benoit Macq * Copyright (c) 2010-2011, Kaori Hagihara * 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 #include #include #include #include #include "jp2k_decoder.h" #include "openjpeg.h" static void error_callback(const char *msg, void *client_data); static void warning_callback(const char *msg, void *client_data); static void info_callback(const char *msg, void *client_data); static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox); Byte_t * j2k_to_pnm(const char *fn, ihdrbox_param_t **ihdrbox) { Byte_t *pnmstream = NULL; opj_dparameters_t parameters; /* decompression parameters */ opj_image_t *image = NULL; opj_codec_t *l_codec = NULL; /* handle to a decompressor */ opj_stream_t *l_stream = NULL; /* set decoding parameters to default values */ opj_set_default_decoder_parameters(¶meters); /* set a byte stream */ l_stream = opj_stream_create_default_file_stream(fn, OPJ_TRUE); if (!l_stream) { fprintf(stderr, "ERROR -> failed to create the stream from the file\n"); return NULL; } /* decode the code-stream */ /* ---------------------- */ /* JPEG-2000 codestream */ /* get a decoder handle */ l_codec = opj_create_decompress(OPJ_CODEC_J2K); /* catch events using our callbacks and give a local context */ opj_set_info_handler(l_codec, info_callback, 00); opj_set_warning_handler(l_codec, warning_callback, 00); opj_set_error_handler(l_codec, error_callback, 00); /* setup the decoder decoding parameters using user parameters */ if (!opj_setup_decoder(l_codec, ¶meters)) { fprintf(stderr, "ERROR -> j2k_dump: failed to setup the decoder\n"); opj_stream_destroy(l_stream); opj_destroy_codec(l_codec); return NULL; } /* Read the main header of the codestream and if necessary the JP2 boxes*/ if (! opj_read_header(l_stream, l_codec, &image)) { fprintf(stderr, "ERROR -> j2k_to_image: failed to read the header\n"); opj_stream_destroy(l_stream); opj_destroy_codec(l_codec); opj_image_destroy(image); return NULL; } #ifdef TODO /*decode area could be set from j2k_to_pnm call, modify the protocol between JPIP viewer and opj_dec_server*/ if (! opj_set_decode_area(l_codec, image, parameters.DA_x0, parameters.DA_y0, parameters.DA_x1, parameters.DA_y1)) { fprintf(stderr, "ERROR -> j2k_to_image: failed to set the decoded area\n"); opj_stream_destroy(l_stream); opj_destroy_codec(l_codec); opj_image_destroy(image); return NULL; } #endif /*TODO*/ /* Get the decoded image */ if (!(opj_decode(l_codec, l_stream, image) && opj_end_decompress(l_codec, l_stream))) { fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n"); opj_stream_destroy(l_stream); opj_destroy_codec(l_codec); opj_image_destroy(image); return NULL; } fprintf(stderr, "image is decoded!\n"); /* close the byte stream */ opj_stream_destroy(l_stream); /* create output image */ /* ------------------- */ if ((pnmstream = imagetopnm(image, ihdrbox)) == NULL) { fprintf(stderr, "PNM image not generated\n"); } /* free remaining structures */ if (l_codec) { opj_destroy_codec(l_codec); } /* free image data structure */ opj_image_destroy(image); return pnmstream; } /** sample error callback expecting a FILE* client object */ static void error_callback(const char *msg, void *client_data) { FILE *stream = (FILE*)client_data; fprintf(stream, "[ERROR] %s", msg); } /** sample warning callback expecting a FILE* client object */ static void warning_callback(const char *msg, void *client_data) { FILE *stream = (FILE*)client_data; fprintf(stream, "[WARNING] %s", msg); } /** sample debug callback expecting no client object */ static void info_callback(const char *msg, void *client_data) { (void)client_data; (void)msg; /* fprintf(stdout, "[INFO] %s", msg); */ } static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox) { OPJ_UINT32 adjustR, adjustG = 0, adjustB = 0; OPJ_SIZE_T datasize; Byte_t *pix = NULL, *ptr = NULL; OPJ_UINT32 i; if (*ihdrbox) { if ((*ihdrbox)->nc != image->numcomps) { fprintf(stderr, "Exception: num of components not identical, codestream: %d, ihdrbox: %d\n", image->numcomps, (*ihdrbox)->nc); } if ((*ihdrbox)->width != image->comps[0].w) { (*ihdrbox)->width = image->comps[0].w; } if ((*ihdrbox)->height != image->comps[0].h) { (*ihdrbox)->height = image->comps[0].h; } if ((*ihdrbox)->bpc != image->comps[0].prec) { fprintf(stderr, "Exception: bits per component not identical, codestream: %d, ihdrbox: %d\n", image->comps[0].prec, (*ihdrbox)->bpc); } } else { *ihdrbox = (ihdrbox_param_t *)malloc(sizeof(ihdrbox_param_t)); (*ihdrbox)->width = image->comps[0].w; (*ihdrbox)->height = image->comps[0].h; assert(image->comps[0].prec < 256); (*ihdrbox)->bpc = (Byte_t)image->comps[0].prec; assert(image->numcomps < USHRT_MAX); (*ihdrbox)->nc = (Byte2_t)image->numcomps; } datasize = (image->numcomps) * (image->comps[0].w) * (image->comps[0].h); if (image->comps[0].prec > 8) { adjustR = image->comps[0].prec - 8; printf("PNM CONVERSION: Truncating component 0 from %d bits to 8 bits\n", image->comps[0].prec); } else { adjustR = 0; } if (image->numcomps == 3) { if (image->comps[1].prec > 8) { adjustG = image->comps[1].prec - 8; printf("PNM CONVERSION: Truncating component 1 from %d bits to 8 bits\n", image->comps[1].prec); } else { adjustG = 0; } if (image->comps[2].prec > 8) { adjustB = image->comps[2].prec - 8; printf("PNM CONVERSION: Truncating component 2 from %d bits to 8 bits\n", image->comps[2].prec); } else { adjustB = 0; } } pix = (Byte_t *)malloc(datasize); ptr = pix; for (i = 0; i < image->comps[0].w * image->comps[0].h; i++) { int r, g, b; r = image->comps[0].data[i]; r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0); /* if( adjustR > 0) */ *(ptr++) = (Byte_t)((r >> adjustR) + ((r >> (adjustR - 1)) % 2)); if (image->numcomps == 3) { g = image->comps[1].data[i]; g += (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0); *(ptr++) = (Byte_t)((g >> adjustG) + ((g >> (adjustG - 1)) % 2)); b = image->comps[2].data[i]; b += (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0); *(ptr++) = (Byte_t)((b >> adjustB) + ((b >> (adjustB - 1)) % 2)); } } return pix; }