/src/FreeImage/Source/LibOpenJPEG/jp2.c
https://bitbucket.org/cabalistic/ogredeps/ · C · 1210 lines · 811 code · 218 blank · 181 comment · 168 complexity · f2709592cd610c26b6f5915451bbee6e MD5 · raw file
- /*
- * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
- * Copyright (c) 2002-2007, Professor Benoit Macq
- * Copyright (c) 2001-2003, David Janssens
- * Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
- * Copyright (c) 2005, Herve Drolon, FreeImage Team
- * 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 "opj_includes.h"
- /** @defgroup JP2 JP2 - JPEG-2000 file format reader/writer */
- /*@{*/
- /** @name Local static functions */
- /*@{*/
- /**
- Read box headers
- @param cinfo Codec context info
- @param cio Input stream
- @param box
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_boxhdr(opj_common_ptr cinfo, opj_cio_t *cio, opj_jp2_box_t *box);
- /*static void jp2_write_url(opj_cio_t *cio, char *Idx_file);*/
- /**
- Read the IHDR box - Image Header box
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_ihdr(opj_jp2_t *jp2, opj_cio_t *cio);
- static void jp2_write_ihdr(opj_jp2_t *jp2, opj_cio_t *cio);
- static void jp2_write_bpcc(opj_jp2_t *jp2, opj_cio_t *cio);
- static opj_bool jp2_read_bpcc(opj_jp2_t *jp2, opj_cio_t *cio);
- static void jp2_write_colr(opj_jp2_t *jp2, opj_cio_t *cio);
- /**
- Write the FTYP box - File type box
- @param jp2 JP2 handle
- @param cio Output buffer stream
- */
- static void jp2_write_ftyp(opj_jp2_t *jp2, opj_cio_t *cio);
- /**
- Read the FTYP box - File type box
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_ftyp(opj_jp2_t *jp2, opj_cio_t *cio);
- static int jp2_write_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
- static opj_bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset);
- static void jp2_write_jp(opj_cio_t *cio);
- /**
- Read the JP box - JPEG 2000 signature
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio);
- /**
- Decode the structure of a JP2 file
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @param color Collector for profile, cdef and pclr data
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_struct(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_color_t *color);
- /**
- Apply collected palette data
- @param color Collector for profile, cdef and pclr data
- @param image
- */
- static void jp2_apply_pclr(opj_jp2_color_t *color, opj_image_t *image, opj_common_ptr cinfo);
- /**
- Collect palette data
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @param box
- @param color Collector for profile, cdef and pclr data
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_pclr(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color);
- /**
- Collect component mapping data
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @param box
- @param color Collector for profile, cdef and pclr data
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_cmap(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color);
- /**
- Collect colour specification data
- @param jp2 JP2 handle
- @param cio Input buffer stream
- @param box
- @param color Collector for profile, cdef and pclr data
- @return Returns true if successful, returns false otherwise
- */
- static opj_bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color);
- /**
- Write file Index (superbox)
- @param[in] offset_jp2c offset of jp2c box
- @param[in] length_jp2c length of jp2c box
- @param[in] offset_idx offset of cidx box
- @param[in] length_idx length of cidx box
- @param[in] cio file output handle
- @return length of fidx box
- */
- static int write_fidx( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio);
- /**
- Write index Finder box
- @param[in] offset offset of fidx box
- @param[in] length length of fidx box
- @param[in] cio file output handle
- */
- static void write_iptr( int offset, int length, opj_cio_t *cio);
- /**
- Write proxy box
- @param[in] offset_jp2c offset of jp2c box
- @param[in] length_jp2c length of jp2c box
- @param[in] offset_idx offset of cidx box
- @param[in] length_idx length of cidx box
- @param[in] cio file output handle
- */
- static void write_prxy( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio);
- /*@}*/
- /*@}*/
- /* ----------------------------------------------------------------------- */
- static opj_bool jp2_read_boxhdr(opj_common_ptr cinfo, opj_cio_t *cio, opj_jp2_box_t *box) {
- box->init_pos = cio_tell(cio);
- box->length = cio_read(cio, 4);
- box->type = cio_read(cio, 4);
- if (box->length == 1) {
- if (cio_read(cio, 4) != 0) {
- opj_event_msg(cinfo, EVT_ERROR, "Cannot handle box sizes higher than 2^32\n");
- return OPJ_FALSE;
- }
- box->length = cio_read(cio, 4);
- if (box->length == 0)
- box->length = cio_numbytesleft(cio) + 12;
- }
- else if (box->length == 0) {
- box->length = cio_numbytesleft(cio) + 8;
- }
-
- return OPJ_TRUE;
- }
- #if 0
- static void jp2_write_url(opj_cio_t *cio, char *Idx_file) {
- unsigned int i;
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_URL, 4); /* DBTL */
- cio_write(cio, 0, 1); /* VERS */
- cio_write(cio, 0, 3); /* FLAG */
- if(Idx_file) {
- for (i = 0; i < strlen(Idx_file); i++) {
- cio_write(cio, Idx_file[i], 1);
- }
- }
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- #endif
- static opj_bool jp2_read_ihdr(opj_jp2_t *jp2, opj_cio_t *cio) {
- opj_jp2_box_t box;
- opj_common_ptr cinfo = jp2->cinfo;
- jp2_read_boxhdr(cinfo, cio, &box);
- if (JP2_IHDR != box.type) {
- opj_event_msg(cinfo, EVT_ERROR, "Expected IHDR Marker\n");
- return OPJ_FALSE;
- }
- jp2->h = cio_read(cio, 4); /* HEIGHT */
- jp2->w = cio_read(cio, 4); /* WIDTH */
- jp2->numcomps = cio_read(cio, 2); /* NC */
- jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
- jp2->bpc = cio_read(cio, 1); /* BPC */
- jp2->C = cio_read(cio, 1); /* C */
- jp2->UnkC = cio_read(cio, 1); /* UnkC */
- jp2->IPR = cio_read(cio, 1); /* IPR */
- if (cio_tell(cio) - box.init_pos != box.length) {
- opj_event_msg(cinfo, EVT_ERROR, "Error with IHDR Box\n");
- return OPJ_FALSE;
- }
- return OPJ_TRUE;
- }
- static void jp2_write_ihdr(opj_jp2_t *jp2, opj_cio_t *cio) {
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_IHDR, 4); /* IHDR */
- cio_write(cio, jp2->h, 4); /* HEIGHT */
- cio_write(cio, jp2->w, 4); /* WIDTH */
- cio_write(cio, jp2->numcomps, 2); /* NC */
- cio_write(cio, jp2->bpc, 1); /* BPC */
- cio_write(cio, jp2->C, 1); /* C : Always 7 */
- cio_write(cio, jp2->UnkC, 1); /* UnkC, colorspace unknown */
- cio_write(cio, jp2->IPR, 1); /* IPR, no intellectual property */
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- static void jp2_write_bpcc(opj_jp2_t *jp2, opj_cio_t *cio) {
- unsigned int i;
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_BPCC, 4); /* BPCC */
- for (i = 0; i < jp2->numcomps; i++) {
- cio_write(cio, jp2->comps[i].bpcc, 1);
- }
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- static opj_bool jp2_read_bpcc(opj_jp2_t *jp2, opj_cio_t *cio) {
- unsigned int i;
- opj_jp2_box_t box;
- opj_common_ptr cinfo = jp2->cinfo;
- jp2_read_boxhdr(cinfo, cio, &box);
- if (JP2_BPCC != box.type) {
- opj_event_msg(cinfo, EVT_ERROR, "Expected BPCC Marker\n");
- return OPJ_FALSE;
- }
- for (i = 0; i < jp2->numcomps; i++) {
- jp2->comps[i].bpcc = cio_read(cio, 1);
- }
- if (cio_tell(cio) - box.init_pos != box.length) {
- opj_event_msg(cinfo, EVT_ERROR, "Error with BPCC Box\n");
- return OPJ_FALSE;
- }
- return OPJ_TRUE;
- }
- static void jp2_write_colr(opj_jp2_t *jp2, opj_cio_t *cio) {
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_COLR, 4); /* COLR */
- cio_write(cio, jp2->meth, 1); /* METH */
- cio_write(cio, jp2->precedence, 1); /* PRECEDENCE */
- cio_write(cio, jp2->approx, 1); /* APPROX */
- if(jp2->meth == 2)
- jp2->enumcs = 0;
- cio_write(cio, jp2->enumcs, 4); /* EnumCS */
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- static void jp2_free_pclr(opj_jp2_color_t *color)
- {
- opj_free(color->jp2_pclr->channel_sign);
- opj_free(color->jp2_pclr->channel_size);
- opj_free(color->jp2_pclr->entries);
- if(color->jp2_pclr->cmap) opj_free(color->jp2_pclr->cmap);
- opj_free(color->jp2_pclr); color->jp2_pclr = NULL;
- }
- static void free_color_data(opj_jp2_color_t *color)
- {
- if(color->jp2_pclr)
- {
- jp2_free_pclr(color);
- }
- if(color->jp2_cdef)
- {
- if(color->jp2_cdef->info) opj_free(color->jp2_cdef->info);
- opj_free(color->jp2_cdef);
- }
- if(color->icc_profile_buf) opj_free(color->icc_profile_buf);
- }
- static void jp2_apply_pclr(opj_jp2_color_t *color, opj_image_t *image, opj_common_ptr cinfo)
- {
- opj_image_comp_t *old_comps, *new_comps;
- unsigned char *channel_size, *channel_sign;
- unsigned int *entries;
- opj_jp2_cmap_comp_t *cmap;
- int *src, *dst;
- unsigned int j, max;
- unsigned short i, nr_channels, cmp, pcol;
- int k, top_k;
- channel_size = color->jp2_pclr->channel_size;
- channel_sign = color->jp2_pclr->channel_sign;
- entries = color->jp2_pclr->entries;
- cmap = color->jp2_pclr->cmap;
- nr_channels = color->jp2_pclr->nr_channels;
- old_comps = image->comps;
- new_comps = (opj_image_comp_t*)
- opj_malloc(nr_channels * sizeof(opj_image_comp_t));
- for(i = 0; i < nr_channels; ++i)
- {
- pcol = cmap[i].pcol; cmp = cmap[i].cmp;
- if( pcol < nr_channels )
- new_comps[pcol] = old_comps[cmp];
- else
- {
- opj_event_msg(cinfo, EVT_ERROR, "Error with pcol value %d (max: %d). skipping\n", pcol, nr_channels);
- continue;
- }
- if(cmap[i].mtyp == 0) /* Direct use */
- {
- old_comps[cmp].data = NULL; continue;
- }
- /* Palette mapping: */
- new_comps[pcol].data = (int*)
- opj_malloc(old_comps[cmp].w * old_comps[cmp].h * sizeof(int));
- new_comps[pcol].prec = channel_size[i];
- new_comps[pcol].sgnd = channel_sign[i];
- }
- top_k = color->jp2_pclr->nr_entries - 1;
- for(i = 0; i < nr_channels; ++i)
- {
- /* Direct use: */
- if(cmap[i].mtyp == 0) continue;
- /* Palette mapping: */
- cmp = cmap[i].cmp; pcol = cmap[i].pcol;
- src = old_comps[cmp].data;
- dst = new_comps[pcol].data;
- max = new_comps[pcol].w * new_comps[pcol].h;
- for(j = 0; j < max; ++j)
- {
- /* The index */
- if((k = src[j]) < 0) k = 0; else if(k > top_k) k = top_k;
- /* The colour */
- dst[j] = entries[k * nr_channels + pcol];
- }
- }
- max = image->numcomps;
- for(i = 0; i < max; ++i)
- {
- if(old_comps[i].data) opj_free(old_comps[i].data);
- }
- opj_free(old_comps);
- image->comps = new_comps;
- image->numcomps = nr_channels;
- jp2_free_pclr(color);
- }/* apply_pclr() */
- static opj_bool jp2_read_pclr(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color)
- {
- opj_jp2_pclr_t *jp2_pclr;
- unsigned char *channel_size, *channel_sign;
- unsigned int *entries;
- unsigned short nr_entries, nr_channels;
- unsigned short i, j;
- unsigned char uc;
- OPJ_ARG_NOT_USED(box);
- OPJ_ARG_NOT_USED(jp2);
- /* Part 1, I.5.3.4: 'There shall be at most one Palette box inside
- * a JP2 Header box' :
- */
- if(color->jp2_pclr) return OPJ_FALSE;
- nr_entries = (unsigned short)cio_read(cio, 2); /* NE */
- nr_channels = (unsigned short)cio_read(cio, 1);/* NPC */
- entries = (unsigned int*)
- opj_malloc(nr_channels * nr_entries * sizeof(unsigned int));
- channel_size = (unsigned char*)opj_malloc(nr_channels);
- channel_sign = (unsigned char*)opj_malloc(nr_channels);
- jp2_pclr = (opj_jp2_pclr_t*)opj_malloc(sizeof(opj_jp2_pclr_t));
- jp2_pclr->channel_sign = channel_sign;
- jp2_pclr->channel_size = channel_size;
- jp2_pclr->entries = entries;
- jp2_pclr->nr_entries = nr_entries;
- jp2_pclr->nr_channels = nr_channels;
- jp2_pclr->cmap = NULL;
- color->jp2_pclr = jp2_pclr;
- for(i = 0; i < nr_channels; ++i)
- {
- uc = cio_read(cio, 1); /* Bi */
- channel_size[i] = (uc & 0x7f) + 1;
- channel_sign[i] = (uc & 0x80)?1:0;
- }
- for(j = 0; j < nr_entries; ++j)
- {
- for(i = 0; i < nr_channels; ++i)
- {
- /* Cji */
- *entries++ = cio_read(cio, channel_size[i]>>3);
- }
- }
- return OPJ_TRUE;
- }/* jp2_read_pclr() */
- static opj_bool jp2_read_cmap(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color)
- {
- opj_jp2_cmap_comp_t *cmap;
- unsigned short i, nr_channels;
- OPJ_ARG_NOT_USED(box);
- OPJ_ARG_NOT_USED(jp2);
- /* Need nr_channels: */
- if(color->jp2_pclr == NULL) return OPJ_FALSE;
- /* Part 1, I.5.3.5: 'There shall be at most one Component Mapping box
- * inside a JP2 Header box' :
- */
- if(color->jp2_pclr->cmap) return OPJ_FALSE;
- nr_channels = color->jp2_pclr->nr_channels;
- cmap = (opj_jp2_cmap_comp_t*)
- opj_malloc(nr_channels * sizeof(opj_jp2_cmap_comp_t));
- for(i = 0; i < nr_channels; ++i)
- {
- cmap[i].cmp = (unsigned short)cio_read(cio, 2);
- cmap[i].mtyp = cio_read(cio, 1);
- cmap[i].pcol = cio_read(cio, 1);
- }
- color->jp2_pclr->cmap = cmap;
- return OPJ_TRUE;
- }/* jp2_read_cmap() */
- static void jp2_apply_cdef(opj_image_t *image, opj_jp2_color_t *color)
- {
- opj_jp2_cdef_info_t *info;
- int color_space;
- unsigned short i, n, cn, typ, asoc, acn;
- color_space = image->color_space;
- info = color->jp2_cdef->info;
- n = color->jp2_cdef->n;
- for(i = 0; i < n; ++i)
- {
- /* WATCH: acn = asoc - 1 ! */
- if((asoc = info[i].asoc) == 0) continue;
- cn = info[i].cn; typ = info[i].typ; acn = asoc - 1;
- if(cn != acn)
- {
- opj_image_comp_t saved;
- memcpy(&saved, &image->comps[cn], sizeof(opj_image_comp_t));
- memcpy(&image->comps[cn], &image->comps[acn], sizeof(opj_image_comp_t));
- memcpy(&image->comps[acn], &saved, sizeof(opj_image_comp_t));
- info[i].asoc = cn + 1;
- info[acn].asoc = info[acn].cn + 1;
- }
- }
- if(color->jp2_cdef->info) opj_free(color->jp2_cdef->info);
- opj_free(color->jp2_cdef); color->jp2_cdef = NULL;
- }/* jp2_apply_cdef() */
- static opj_bool jp2_read_cdef(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color)
- {
- opj_jp2_cdef_info_t *info;
- unsigned short i, n;
- OPJ_ARG_NOT_USED(box);
- OPJ_ARG_NOT_USED(jp2);
- /* Part 1, I.5.3.6: 'The shall be at most one Channel Definition box
- * inside a JP2 Header box.'
- */
- if(color->jp2_cdef) return OPJ_FALSE;
- if((n = (unsigned short)cio_read(cio, 2)) == 0) return OPJ_FALSE; /* szukw000: FIXME */
- info = (opj_jp2_cdef_info_t*)
- opj_malloc(n * sizeof(opj_jp2_cdef_info_t));
- color->jp2_cdef = (opj_jp2_cdef_t*)opj_malloc(sizeof(opj_jp2_cdef_t));
- color->jp2_cdef->info = info;
- color->jp2_cdef->n = n;
- for(i = 0; i < n; ++i)
- {
- info[i].cn = (unsigned short)cio_read(cio, 2);
- info[i].typ = (unsigned short)cio_read(cio, 2);
- info[i].asoc = (unsigned short)cio_read(cio, 2);
- }
- return OPJ_TRUE;
- }/* jp2_read_cdef() */
- static opj_bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_box_t *box, opj_jp2_color_t *color)
- {
- int skip_len;
- opj_common_ptr cinfo;
- /* Part 1, I.5.3.3 : 'A conforming JP2 reader shall ignore all Colour
- * Specification boxes after the first.'
- */
- if(color->jp2_has_colr) return OPJ_FALSE;
- cinfo = jp2->cinfo;
- jp2->meth = cio_read(cio, 1); /* METH */
- jp2->precedence = cio_read(cio, 1); /* PRECEDENCE */
- jp2->approx = cio_read(cio, 1); /* APPROX */
- if (jp2->meth == 1)
- {
- jp2->enumcs = cio_read(cio, 4); /* EnumCS */
- }
- else
- if (jp2->meth == 2)
- {
- /* skip PROFILE */
- skip_len = box->init_pos + box->length - cio_tell(cio);
- if (skip_len < 0)
- {
- opj_event_msg(cinfo, EVT_ERROR, "Error with COLR box size\n");
- return OPJ_FALSE;
- }
- if(skip_len > 0)
- {
- unsigned char *start;
- start = cio_getbp(cio);
- color->icc_profile_buf = (unsigned char*)opj_malloc(skip_len);
- color->icc_profile_len = skip_len;
- cio_skip(cio, box->init_pos + box->length - cio_tell(cio));
- memcpy(color->icc_profile_buf, start, skip_len);
- }
- }
- if (cio_tell(cio) - box->init_pos != box->length)
- {
- opj_event_msg(cinfo, EVT_ERROR, "Error with COLR Box\n");
- return OPJ_FALSE;
- }
- color->jp2_has_colr = 1;
- return OPJ_TRUE;
- }/* jp2_read_colr() */
- opj_bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio, opj_jp2_color_t *color)
- {
- opj_jp2_box_t box;
- int jp2h_end;
- opj_common_ptr cinfo = jp2->cinfo;
- jp2_read_boxhdr(cinfo, cio, &box);
- do
- {
- if (JP2_JP2H != box.type)
- {
- if (box.type == JP2_JP2C)
- {
- opj_event_msg(cinfo, EVT_ERROR, "Expected JP2H Marker\n");
- return OPJ_FALSE;
- }
- cio_skip(cio, box.length - 8);
- if(cio->bp >= cio->end) return OPJ_FALSE;
- jp2_read_boxhdr(cinfo, cio, &box);
- }
- } while(JP2_JP2H != box.type);
- if (!jp2_read_ihdr(jp2, cio))
- return OPJ_FALSE;
- jp2h_end = box.init_pos + box.length;
- if (jp2->bpc == 255)
- {
- if (!jp2_read_bpcc(jp2, cio))
- return OPJ_FALSE;
- }
- jp2_read_boxhdr(cinfo, cio, &box);
- while(cio_tell(cio) < jp2h_end)
- {
- if(box.type == JP2_COLR)
- {
- if( !jp2_read_colr(jp2, cio, &box, color))
- {
- cio_seek(cio, box.init_pos + 8);
- cio_skip(cio, box.length - 8);
- }
- jp2_read_boxhdr(cinfo, cio, &box);
- continue;
- }
- if(box.type == JP2_CDEF && !jp2->ignore_pclr_cmap_cdef)
- {
- if( !jp2_read_cdef(jp2, cio, &box, color))
- {
- cio_seek(cio, box.init_pos + 8);
- cio_skip(cio, box.length - 8);
- }
- jp2_read_boxhdr(cinfo, cio, &box);
- continue;
- }
- if(box.type == JP2_PCLR && !jp2->ignore_pclr_cmap_cdef)
- {
- if( !jp2_read_pclr(jp2, cio, &box, color))
- {
- cio_seek(cio, box.init_pos + 8);
- cio_skip(cio, box.length - 8);
- }
- jp2_read_boxhdr(cinfo, cio, &box);
- continue;
- }
- if(box.type == JP2_CMAP && !jp2->ignore_pclr_cmap_cdef)
- {
- if( !jp2_read_cmap(jp2, cio, &box, color))
- {
- cio_seek(cio, box.init_pos + 8);
- cio_skip(cio, box.length - 8);
- }
- jp2_read_boxhdr(cinfo, cio, &box);
- continue;
- }
- cio_seek(cio, box.init_pos + 8);
- cio_skip(cio, box.length - 8);
- jp2_read_boxhdr(cinfo, cio, &box);
- }/* while(cio_tell(cio) < box_end) */
- cio_seek(cio, jp2h_end);
- /* Part 1, I.5.3.3 : 'must contain at least one' */
- return (color->jp2_has_colr == 1);
- }/* jp2_read_jp2h() */
- opj_image_t* opj_jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_codestream_info_t *cstr_info)
- {
- opj_common_ptr cinfo;
- opj_image_t *image = NULL;
- opj_jp2_color_t color;
- if(!jp2 || !cio)
- {
- return NULL;
- }
- memset(&color, 0, sizeof(opj_jp2_color_t));
- cinfo = jp2->cinfo;
- /* JP2 decoding */
- if(!jp2_read_struct(jp2, cio, &color))
- {
- free_color_data(&color);
- opj_event_msg(cinfo, EVT_ERROR, "Failed to decode jp2 structure\n");
- return NULL;
- }
- /* J2K decoding */
- image = j2k_decode(jp2->j2k, cio, cstr_info);
- if(!image)
- {
- free_color_data(&color);
- opj_event_msg(cinfo, EVT_ERROR, "Failed to decode J2K image\n");
- return NULL;
- }
-
- if (!jp2->ignore_pclr_cmap_cdef){
- /* Set Image Color Space */
- if (jp2->enumcs == 16)
- image->color_space = CLRSPC_SRGB;
- else if (jp2->enumcs == 17)
- image->color_space = CLRSPC_GRAY;
- else if (jp2->enumcs == 18)
- image->color_space = CLRSPC_SYCC;
- else
- image->color_space = CLRSPC_UNKNOWN;
- if(color.jp2_cdef)
- {
- jp2_apply_cdef(image, &color);
- }
- if(color.jp2_pclr)
- {
- /* Part 1, I.5.3.4: Either both or none : */
- if( !color.jp2_pclr->cmap)
- jp2_free_pclr(&color);
- else
- jp2_apply_pclr(&color, image, cinfo);
- }
- if(color.icc_profile_buf)
- {
- image->icc_profile_buf = color.icc_profile_buf;
- color.icc_profile_buf = NULL;
- image->icc_profile_len = color.icc_profile_len;
- }
- }
-
- return image;
- }/* opj_jp2_decode() */
- void jp2_write_jp2h(opj_jp2_t *jp2, opj_cio_t *cio) {
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_JP2H, 4); /* JP2H */
- jp2_write_ihdr(jp2, cio);
- if (jp2->bpc == 255) {
- jp2_write_bpcc(jp2, cio);
- }
- jp2_write_colr(jp2, cio);
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- static void jp2_write_ftyp(opj_jp2_t *jp2, opj_cio_t *cio) {
- unsigned int i;
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_FTYP, 4); /* FTYP */
- cio_write(cio, jp2->brand, 4); /* BR */
- cio_write(cio, jp2->minversion, 4); /* MinV */
- for (i = 0; i < jp2->numcl; i++) {
- cio_write(cio, jp2->cl[i], 4); /* CL */
- }
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- static opj_bool jp2_read_ftyp(opj_jp2_t *jp2, opj_cio_t *cio) {
- int i;
- opj_jp2_box_t box;
- opj_common_ptr cinfo = jp2->cinfo;
- jp2_read_boxhdr(cinfo, cio, &box);
- if (JP2_FTYP != box.type) {
- opj_event_msg(cinfo, EVT_ERROR, "Expected FTYP Marker\n");
- return OPJ_FALSE;
- }
- jp2->brand = cio_read(cio, 4); /* BR */
- jp2->minversion = cio_read(cio, 4); /* MinV */
- jp2->numcl = (box.length - 16) / 4;
- jp2->cl = (unsigned int *) opj_malloc(jp2->numcl * sizeof(unsigned int));
- for (i = 0; i < (int)jp2->numcl; i++) {
- jp2->cl[i] = cio_read(cio, 4); /* CLi */
- }
- if (cio_tell(cio) - box.init_pos != box.length) {
- opj_event_msg(cinfo, EVT_ERROR, "Error with FTYP Box\n");
- return OPJ_FALSE;
- }
- return OPJ_TRUE;
- }
- static int jp2_write_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info) {
- unsigned int j2k_codestream_offset, j2k_codestream_length;
- opj_jp2_box_t box;
- opj_j2k_t *j2k = jp2->j2k;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_JP2C, 4); /* JP2C */
- /* J2K encoding */
- j2k_codestream_offset = cio_tell(cio);
- if(!j2k_encode(j2k, cio, image, cstr_info)) {
- opj_event_msg(j2k->cinfo, EVT_ERROR, "Failed to encode image\n");
- return 0;
- }
- j2k_codestream_length = cio_tell(cio) - j2k_codestream_offset;
- jp2->j2k_codestream_offset = j2k_codestream_offset;
- jp2->j2k_codestream_length = j2k_codestream_length;
- box.length = 8 + jp2->j2k_codestream_length;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- return box.length;
- }
- static opj_bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset) {
- opj_jp2_box_t box;
- opj_common_ptr cinfo = jp2->cinfo;
- jp2_read_boxhdr(cinfo, cio, &box);
- do {
- if(JP2_JP2C != box.type) {
- cio_skip(cio, box.length - 8);
- jp2_read_boxhdr(cinfo, cio, &box);
- }
- } while(JP2_JP2C != box.type);
- *j2k_codestream_offset = cio_tell(cio);
- *j2k_codestream_length = box.length - 8;
- return OPJ_TRUE;
- }
- static void jp2_write_jp(opj_cio_t *cio) {
- opj_jp2_box_t box;
- box.init_pos = cio_tell(cio);
- cio_skip(cio, 4);
- cio_write(cio, JP2_JP, 4); /* JP2 signature */
- cio_write(cio, 0x0d0a870a, 4);
- box.length = cio_tell(cio) - box.init_pos;
- cio_seek(cio, box.init_pos);
- cio_write(cio, box.length, 4); /* L */
- cio_seek(cio, box.init_pos + box.length);
- }
- static opj_bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio) {
- opj_jp2_box_t box;
- opj_common_ptr cinfo = jp2->cinfo;
- jp2_read_boxhdr(cinfo, cio, &box);
- if (JP2_JP != box.type) {
- opj_event_msg(cinfo, EVT_ERROR, "Expected JP Marker\n");
- return OPJ_FALSE;
- }
- if (0x0d0a870a != cio_read(cio, 4)) {
- opj_event_msg(cinfo, EVT_ERROR, "Error with JP Marker\n");
- return OPJ_FALSE;
- }
- if (cio_tell(cio) - box.init_pos != box.length) {
- opj_event_msg(cinfo, EVT_ERROR, "Error with JP Box size\n");
- return OPJ_FALSE;
- }
- return OPJ_TRUE;
- }
- static opj_bool jp2_read_struct(opj_jp2_t *jp2, opj_cio_t *cio,
- opj_jp2_color_t *color) {
- if (!jp2_read_jp(jp2, cio))
- return OPJ_FALSE;
- if (!jp2_read_ftyp(jp2, cio))
- return OPJ_FALSE;
- if (!jp2_read_jp2h(jp2, cio, color))
- return OPJ_FALSE;
- if (!jp2_read_jp2c(jp2, cio, &jp2->j2k_codestream_length, &jp2->j2k_codestream_offset))
- return OPJ_FALSE;
-
- return OPJ_TRUE;
- }
- static int write_fidx( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio)
- {
- int len, lenp;
-
- lenp = cio_tell( cio);
- cio_skip( cio, 4); /* L [at the end] */
- cio_write( cio, JPIP_FIDX, 4); /* IPTR */
-
- write_prxy( offset_jp2c, length_jp2c, offset_idx, length_idx, cio);
- len = cio_tell( cio)-lenp;
- cio_seek( cio, lenp);
- cio_write( cio, len, 4); /* L */
- cio_seek( cio, lenp+len);
- return len;
- }
- static void write_prxy( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio)
- {
- int len, lenp;
- lenp = cio_tell( cio);
- cio_skip( cio, 4); /* L [at the end] */
- cio_write( cio, JPIP_PRXY, 4); /* IPTR */
-
- cio_write( cio, offset_jp2c, 8); /* OOFF */
- cio_write( cio, length_jp2c, 4); /* OBH part 1 */
- cio_write( cio, JP2_JP2C, 4); /* OBH part 2 */
-
- cio_write( cio, 1,1); /* NI */
- cio_write( cio, offset_idx, 8); /* IOFF */
- cio_write( cio, length_idx, 4); /* IBH part 1 */
- cio_write( cio, JPIP_CIDX, 4); /* IBH part 2 */
- len = cio_tell( cio)-lenp;
- cio_seek( cio, lenp);
- cio_write( cio, len, 4); /* L */
- cio_seek( cio, lenp+len);
- }
- static void write_iptr( int offset, int length, opj_cio_t *cio)
- {
- int len, lenp;
-
- lenp = cio_tell( cio);
- cio_skip( cio, 4); /* L [at the end] */
- cio_write( cio, JPIP_IPTR, 4); /* IPTR */
-
- cio_write( cio, offset, 8);
- cio_write( cio, length, 8);
- len = cio_tell( cio)-lenp;
- cio_seek( cio, lenp);
- cio_write( cio, len, 4); /* L */
- cio_seek( cio, lenp+len);
- }
- /* ----------------------------------------------------------------------- */
- /* JP2 decoder interface */
- /* ----------------------------------------------------------------------- */
- opj_jp2_t* jp2_create_decompress(opj_common_ptr cinfo) {
- opj_jp2_t *jp2 = (opj_jp2_t*) opj_calloc(1, sizeof(opj_jp2_t));
- if(jp2) {
- jp2->cinfo = cinfo;
- /* create the J2K codec */
- jp2->j2k = j2k_create_decompress(cinfo);
- if(jp2->j2k == NULL) {
- jp2_destroy_decompress(jp2);
- return NULL;
- }
- }
- return jp2;
- }
- void jp2_destroy_decompress(opj_jp2_t *jp2) {
- if(jp2) {
- /* destroy the J2K codec */
- j2k_destroy_decompress(jp2->j2k);
- if(jp2->comps) {
- opj_free(jp2->comps);
- }
- if(jp2->cl) {
- opj_free(jp2->cl);
- }
- opj_free(jp2);
- }
- }
- void jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters) {
- /* setup the J2K codec */
- j2k_setup_decoder(jp2->j2k, parameters);
- /* further JP2 initializations go here */
- jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
- }
- /* ----------------------------------------------------------------------- */
- /* JP2 encoder interface */
- /* ----------------------------------------------------------------------- */
- opj_jp2_t* jp2_create_compress(opj_common_ptr cinfo) {
- opj_jp2_t *jp2 = (opj_jp2_t*)opj_malloc(sizeof(opj_jp2_t));
- if(jp2) {
- jp2->cinfo = cinfo;
- /* create the J2K codec */
- jp2->j2k = j2k_create_compress(cinfo);
- if(jp2->j2k == NULL) {
- jp2_destroy_compress(jp2);
- return NULL;
- }
- }
- return jp2;
- }
- void jp2_destroy_compress(opj_jp2_t *jp2) {
- if(jp2) {
- /* destroy the J2K codec */
- j2k_destroy_compress(jp2->j2k);
- if(jp2->comps) {
- opj_free(jp2->comps);
- }
- if(jp2->cl) {
- opj_free(jp2->cl);
- }
- opj_free(jp2);
- }
- }
- void jp2_setup_encoder(opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image) {
- int i;
- int depth_0, sign;
- if(!jp2 || !parameters || !image)
- return;
- /* setup the J2K codec */
- /* ------------------- */
- /* Check if number of components respects standard */
- if (image->numcomps < 1 || image->numcomps > 16384) {
- opj_event_msg(jp2->cinfo, EVT_ERROR, "Invalid number of components specified while setting up JP2 encoder\n");
- return;
- }
- j2k_setup_encoder(jp2->j2k, parameters, image);
- /* setup the JP2 codec */
- /* ------------------- */
-
- /* Profile box */
- jp2->brand = JP2_JP2; /* BR */
- jp2->minversion = 0; /* MinV */
- jp2->numcl = 1;
- jp2->cl = (unsigned int*) opj_malloc(jp2->numcl * sizeof(unsigned int));
- jp2->cl[0] = JP2_JP2; /* CL0 : JP2 */
- /* Image Header box */
- jp2->numcomps = image->numcomps; /* NC */
- jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
- jp2->h = image->y1 - image->y0; /* HEIGHT */
- jp2->w = image->x1 - image->x0; /* WIDTH */
- /* BPC */
- depth_0 = image->comps[0].prec - 1;
- sign = image->comps[0].sgnd;
- jp2->bpc = depth_0 + (sign << 7);
- for (i = 1; i < image->numcomps; i++) {
- int depth = image->comps[i].prec - 1;
- sign = image->comps[i].sgnd;
- if (depth_0 != depth)
- jp2->bpc = 255;
- }
- jp2->C = 7; /* C : Always 7 */
- jp2->UnkC = 0; /* UnkC, colorspace specified in colr box */
- jp2->IPR = 0; /* IPR, no intellectual property */
-
- /* BitsPerComponent box */
- for (i = 0; i < image->numcomps; i++) {
- jp2->comps[i].bpcc = image->comps[i].prec - 1 + (image->comps[i].sgnd << 7);
- }
- jp2->meth = 1;
- if (image->color_space == 1)
- jp2->enumcs = 16; /* sRGB as defined by IEC 61966-2.1 */
- else if (image->color_space == 2)
- jp2->enumcs = 17; /* greyscale */
- else if (image->color_space == 3)
- jp2->enumcs = 18; /* YUV */
- jp2->precedence = 0; /* PRECEDENCE */
- jp2->approx = 0; /* APPROX */
-
- jp2->jpip_on = parameters->jpip_on;
- }
- opj_bool opj_jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info) {
- int pos_iptr, pos_cidx, pos_jp2c, len_jp2c, len_cidx, end_pos, pos_fidx, len_fidx;
- pos_jp2c = pos_iptr = -1; /* remove a warning */
- /* JP2 encoding */
- /* JPEG 2000 Signature box */
- jp2_write_jp(cio);
- /* File Type box */
- jp2_write_ftyp(jp2, cio);
- /* JP2 Header box */
- jp2_write_jp2h(jp2, cio);
- if( jp2->jpip_on){
- pos_iptr = cio_tell( cio);
- cio_skip( cio, 24); /* IPTR further ! */
-
- pos_jp2c = cio_tell( cio);
- }
- /* J2K encoding */
- if(!(len_jp2c = jp2_write_jp2c( jp2, cio, image, cstr_info))){
- opj_event_msg(jp2->cinfo, EVT_ERROR, "Failed to encode image\n");
- return OPJ_FALSE;
- }
- if( jp2->jpip_on){
- pos_cidx = cio_tell( cio);
-
- len_cidx = write_cidx( pos_jp2c+8, cio, image, *cstr_info, len_jp2c-8);
-
- pos_fidx = cio_tell( cio);
- len_fidx = write_fidx( pos_jp2c, len_jp2c, pos_cidx, len_cidx, cio);
-
- end_pos = cio_tell( cio);
-
- cio_seek( cio, pos_iptr);
- write_iptr( pos_fidx, len_fidx, cio);
-
- cio_seek( cio, end_pos);
- }
- return OPJ_TRUE;
- }