/* * The copyright in this software is being made available under the 2-clauses * BSD License, included below. This software may be subject to other third * party and contributor rights, including patent rights, and no such rights * are granted under this license. * * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2014, Professor Benoit Macq * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2003-2007, Francois-Olivier Devaux * Copyright (c) 2003-2014, Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * Copyright (c) 2010-2011, Kaori Hagihara * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR * Copyright (c) 2012, CS Systemes d'Information, France * 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 */ /*@{*/ #define OPJ_BOX_SIZE 1024 /** @name Local static functions */ /*@{*/ /*static void jp2_write_url(opj_cio_t *cio, char *Idx_file);*/ /** * Reads a IHDR box - Image Header box * * @param p_image_header_data pointer to actual data (already read from file) * @param jp2 the jpeg2000 file codec. * @param p_image_header_size the size of the image header * @param p_manager the user event manager. * * @return true if the image header is valid, false else. */ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2, OPJ_BYTE *p_image_header_data, OPJ_UINT32 p_image_header_size, opj_event_mgr_t * p_manager ); /** * Writes the Image Header box - Image Header box. * * @param jp2 jpeg2000 file codec. * @param p_nb_bytes_written pointer to store the nb of bytes written by the function. * * @return the data being copied. */ static OPJ_BYTE * opj_jp2_write_ihdr(opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ); /** * Writes the Bit per Component box. * * @param jp2 jpeg2000 file codec. * @param p_nb_bytes_written pointer to store the nb of bytes written by the function. * * @return the data being copied. */ static OPJ_BYTE * opj_jp2_write_bpcc( opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ); /** * Reads a Bit per Component box. * * @param p_bpc_header_data pointer to actual data (already read from file) * @param jp2 the jpeg2000 file codec. * @param p_bpc_header_size the size of the bpc header * @param p_manager the user event manager. * * @return true if the bpc header is valid, fale else. */ static OPJ_BOOL opj_jp2_read_bpcc( opj_jp2_t *jp2, OPJ_BYTE * p_bpc_header_data, OPJ_UINT32 p_bpc_header_size, opj_event_mgr_t * p_manager ); static OPJ_BOOL opj_jp2_read_cdef( opj_jp2_t * jp2, OPJ_BYTE * p_cdef_header_data, OPJ_UINT32 p_cdef_header_size, opj_event_mgr_t * p_manager ); static void opj_jp2_apply_cdef(opj_image_t *image, opj_jp2_color_t *color); /** * Writes the Channel Definition box. * * @param jp2 jpeg2000 file codec. * @param p_nb_bytes_written pointer to store the nb of bytes written by the function. * * @return the data being copied. */ static OPJ_BYTE * opj_jp2_write_cdef( opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ); /** * Writes the Colour Specification box. * * @param jp2 jpeg2000 file codec. * @param p_nb_bytes_written pointer to store the nb of bytes written by the function. * * @return the data being copied. */ static OPJ_BYTE * opj_jp2_write_colr( opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ); /** * Writes a FTYP box - File type box * * @param cio the stream to write data to. * @param jp2 the jpeg2000 file codec. * @param p_manager the user event manager. * * @return true if writing was successful. */ static OPJ_BOOL opj_jp2_write_ftyp( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); /** * Reads a a FTYP box - File type box * * @param p_header_data the data contained in the FTYP box. * @param jp2 the jpeg2000 file codec. * @param p_header_size the size of the data contained in the FTYP box. * @param p_manager the user event manager. * * @return true if the FTYP box is valid. */ static OPJ_BOOL opj_jp2_read_ftyp( opj_jp2_t *jp2, OPJ_BYTE * p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t * p_manager ); OPJ_BOOL opj_jp2_skip_jp2c( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); /** * Reads the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box). * * @param p_header_data the data contained in the file header box. * @param jp2 the jpeg2000 file codec. * @param p_header_size the size of the data contained in the file header box. * @param p_manager the user event manager. * * @return true if the JP2 Header box was successfully reconized. */ static OPJ_BOOL opj_jp2_read_jp2h( opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t * p_manager ); /** * Writes the Jpeg2000 codestream Header box - JP2C Header box. This function must be called AFTER the coding has been done. * * @param cio the stream to write data to. * @param jp2 the jpeg2000 file codec. * @param p_manager user event manager. * * @return true if writing was successful. */ static OPJ_BOOL opj_jp2_write_jp2c( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); #ifdef USE_JPIP /** * Write index Finder box * @param cio the stream to write to. * @param jp2 the jpeg2000 file codec. * @param p_manager user event manager. */ static OPJ_BOOL opj_jpip_write_iptr( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); /** * Write index Finder box * @param cio the stream to write to. * @param jp2 the jpeg2000 file codec. * @param p_manager user event manager. */ static OPJ_BOOL opj_jpip_write_cidx(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); /** * Write file Index (superbox) * @param cio the stream to write to. * @param jp2 the jpeg2000 file codec. * @param p_manager user event manager. */ static OPJ_BOOL opj_jpip_write_fidx(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); #endif /* USE_JPIP */ /** * Reads a jpeg2000 file signature box. * * @param p_header_data the data contained in the signature box. * @param jp2 the jpeg2000 file codec. * @param p_header_size the size of the data contained in the signature box. * @param p_manager the user event manager. * * @return true if the file signature box is valid. */ static OPJ_BOOL opj_jp2_read_jp(opj_jp2_t *jp2, OPJ_BYTE * p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t * p_manager); /** * Writes a jpeg2000 file signature box. * * @param cio the stream to write data to. * @param jp2 the jpeg2000 file codec. * @param p_manager the user event manager. * * @return true if writing was successful. */ static OPJ_BOOL opj_jp2_write_jp( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); /** Apply collected palette data @param color Collector for profile, cdef and pclr data @param image */ static void opj_jp2_apply_pclr(opj_image_t *image, opj_jp2_color_t *color); static void opj_jp2_free_pclr(opj_jp2_color_t *color); /** * Collect palette data * * @param jp2 JP2 handle * @param p_pclr_header_data FIXME DOC * @param p_pclr_header_size FIXME DOC * @param p_manager * * @return Returns true if successful, returns false otherwise */ static OPJ_BOOL opj_jp2_read_pclr( opj_jp2_t *jp2, OPJ_BYTE * p_pclr_header_data, OPJ_UINT32 p_pclr_header_size, opj_event_mgr_t * p_manager ); /** * Collect component mapping data * * @param jp2 JP2 handle * @param p_cmap_header_data FIXME DOC * @param p_cmap_header_size FIXME DOC * @param p_manager FIXME DOC * * @return Returns true if successful, returns false otherwise */ static OPJ_BOOL opj_jp2_read_cmap( opj_jp2_t * jp2, OPJ_BYTE * p_cmap_header_data, OPJ_UINT32 p_cmap_header_size, opj_event_mgr_t * p_manager ); /** * Reads the Color Specification box. * * @param p_colr_header_data pointer to actual data (already read from file) * @param jp2 the jpeg2000 file codec. * @param p_colr_header_size the size of the color header * @param p_manager the user event manager. * * @return true if the bpc header is valid, fale else. */ static OPJ_BOOL opj_jp2_read_colr( opj_jp2_t *jp2, OPJ_BYTE * p_colr_header_data, OPJ_UINT32 p_colr_header_size, opj_event_mgr_t * p_manager ); /*@}*/ /*@}*/ /** * Sets up the procedures to do on writing header after the codestream. * Developpers wanting to extend the library can add their own writing procedures. */ static void opj_jp2_setup_end_header_writing (opj_jp2_t *jp2); /** * Sets up the procedures to do on reading header after the codestream. * Developpers wanting to extend the library can add their own writing procedures. */ static void opj_jp2_setup_end_header_reading (opj_jp2_t *jp2); /** * Reads a jpeg2000 file header structure. * * @param jp2 the jpeg2000 file header structure. * @param stream the stream to read data from. * @param p_manager the user event manager. * * @return true if the box is valid. */ static OPJ_BOOL opj_jp2_read_header_procedure( opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ); /** * Excutes the given procedures on the given codec. * * @param p_procedure_list the list of procedures to execute * @param jp2 the jpeg2000 file codec to execute the procedures on. * @param stream the stream to execute the procedures on. * @param p_manager the user manager. * * @return true if all the procedures were successfully executed. */ static OPJ_BOOL opj_jp2_exec ( opj_jp2_t * jp2, opj_procedure_list_t * p_procedure_list, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ); /** * Reads a box header. The box is the way data is packed inside a jpeg2000 file structure. * * @param cio the input stream to read data from. * @param box the box structure to fill. * @param p_number_bytes_read pointer to an int that will store the number of bytes read from the stream (shoul usually be 2). * @param p_manager user event manager. * * @return true if the box is reconized, false otherwise */ static OPJ_BOOL opj_jp2_read_boxhdr(opj_jp2_box_t *box, OPJ_UINT32 * p_number_bytes_read, opj_stream_private_t *cio, opj_event_mgr_t * p_manager); /** * Sets up the validation ,i.e. adds the procedures to lauch to make sure the codec parameters * are valid. Developpers wanting to extend the library can add their own validation procedures. */ static void opj_jp2_setup_encoding_validation (opj_jp2_t *jp2); /** * Sets up the procedures to do on writing header. Developpers wanting to extend the library can add their own writing procedures. */ static void opj_jp2_setup_header_writing (opj_jp2_t *jp2); OPJ_BOOL opj_jp2_default_validation ( opj_jp2_t * jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ); /** * Finds the image execution function related to the given box id. * * @param p_id the id of the handler to fetch. * * @return the given handler or NULL if it could not be found. */ static const opj_jp2_header_handler_t * opj_jp2_img_find_handler (OPJ_UINT32 p_id); /** * Finds the execution function related to the given box id. * * @param p_id the id of the handler to fetch. * * @return the given handler or NULL if it could not be found. */ static const opj_jp2_header_handler_t * opj_jp2_find_handler (OPJ_UINT32 p_id ); const opj_jp2_header_handler_t jp2_header [] = { {JP2_JP,opj_jp2_read_jp}, {JP2_FTYP,opj_jp2_read_ftyp}, {JP2_JP2H,opj_jp2_read_jp2h} }; const opj_jp2_header_handler_t jp2_img_header [] = { {JP2_IHDR,opj_jp2_read_ihdr}, {JP2_COLR,opj_jp2_read_colr}, {JP2_BPCC,opj_jp2_read_bpcc}, {JP2_PCLR,opj_jp2_read_pclr}, {JP2_CMAP,opj_jp2_read_cmap}, {JP2_CDEF,opj_jp2_read_cdef} }; /** * Reads a box header. The box is the way data is packed inside a jpeg2000 file structure. Data is read from a character string * * @param box the box structure to fill. * @param p_data the character string to read data from. * @param p_number_bytes_read pointer to an int that will store the number of bytes read from the stream (shoul usually be 2). * @param p_box_max_size the maximum number of bytes in the box. * @param p_manager FIXME DOC * * @return true if the box is reconized, false otherwise */ static OPJ_BOOL opj_jp2_read_boxhdr_char( opj_jp2_box_t *box, OPJ_BYTE * p_data, OPJ_UINT32 * p_number_bytes_read, OPJ_UINT32 p_box_max_size, opj_event_mgr_t * p_manager ); /** * Sets up the validation ,i.e. adds the procedures to lauch to make sure the codec parameters * are valid. Developpers wanting to extend the library can add their own validation procedures. */ static void opj_jp2_setup_decoding_validation (opj_jp2_t *jp2); /** * Sets up the procedures to do on reading header. * Developpers wanting to extend the library can add their own writing procedures. */ static void opj_jp2_setup_header_reading (opj_jp2_t *jp2); /* ----------------------------------------------------------------------- */ OPJ_BOOL opj_jp2_read_boxhdr(opj_jp2_box_t *box, OPJ_UINT32 * p_number_bytes_read, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { /* read header from file */ OPJ_BYTE l_data_header [8]; /* preconditions */ assert(cio != 00); assert(box != 00); assert(p_number_bytes_read != 00); assert(p_manager != 00); *p_number_bytes_read = (OPJ_UINT32)opj_stream_read_data(cio,l_data_header,8,p_manager); if (*p_number_bytes_read != 8) { return OPJ_FALSE; } /* process read data */ opj_read_bytes(l_data_header,&(box->length), 4); opj_read_bytes(l_data_header+4,&(box->type), 4); if(box->length == 0)/* last box */ { const OPJ_OFF_T bleft = opj_stream_get_number_byte_left(cio); box->length = (OPJ_UINT32)bleft; assert( (OPJ_OFF_T)box->length == bleft ); return OPJ_TRUE; } /* do we have a "special very large box ?" */ /* read then the XLBox */ if (box->length == 1) { OPJ_UINT32 l_xl_part_size; OPJ_UINT32 l_nb_bytes_read = (OPJ_UINT32)opj_stream_read_data(cio,l_data_header,8,p_manager); if (l_nb_bytes_read != 8) { if (l_nb_bytes_read > 0) { *p_number_bytes_read += l_nb_bytes_read; } return OPJ_FALSE; } *p_number_bytes_read = 16; opj_read_bytes(l_data_header,&l_xl_part_size, 4); if (l_xl_part_size != 0) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box sizes higher than 2^32\n"); return OPJ_FALSE; } opj_read_bytes(l_data_header+4,&(box->length), 4); } return OPJ_TRUE; } #if 0 static void jp2_write_url(opj_cio_t *cio, char *Idx_file) { OPJ_UINT32 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 OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2, OPJ_BYTE *p_image_header_data, OPJ_UINT32 p_image_header_size, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(p_image_header_data != 00); assert(jp2 != 00); assert(p_manager != 00); if (p_image_header_size != 14) { opj_event_msg(p_manager, EVT_ERROR, "Bad image header box (bad size)\n"); return OPJ_FALSE; } opj_read_bytes(p_image_header_data,&(jp2->h),4); /* HEIGHT */ p_image_header_data += 4; opj_read_bytes(p_image_header_data,&(jp2->w),4); /* WIDTH */ p_image_header_data += 4; opj_read_bytes(p_image_header_data,&(jp2->numcomps),2); /* NC */ p_image_header_data += 2; /* allocate memory for components */ jp2->comps = (opj_jp2_comps_t*) opj_calloc(jp2->numcomps, sizeof(opj_jp2_comps_t)); if (jp2->comps == 0) { opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to handle image header (ihdr)\n"); return OPJ_FALSE; } opj_read_bytes(p_image_header_data,&(jp2->bpc),1); /* BPC */ ++ p_image_header_data; opj_read_bytes(p_image_header_data,&(jp2->C),1); /* C */ ++ p_image_header_data; /* Should be equal to 7 cf. chapter about image header box of the norm */ if (jp2->C != 7){ opj_event_msg(p_manager, EVT_INFO, "JP2 IHDR box: compression type indicate that the file is not a conforming JP2 file (%d) \n", jp2->C); } opj_read_bytes(p_image_header_data,&(jp2->UnkC),1); /* UnkC */ ++ p_image_header_data; opj_read_bytes(p_image_header_data,&(jp2->IPR),1); /* IPR */ ++ p_image_header_data; return OPJ_TRUE; } OPJ_BYTE * opj_jp2_write_ihdr(opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ) { OPJ_BYTE * l_ihdr_data,* l_current_ihdr_ptr; /* preconditions */ assert(jp2 != 00); assert(p_nb_bytes_written != 00); /* default image header is 22 bytes wide */ l_ihdr_data = (OPJ_BYTE *) opj_calloc(1,22); if (l_ihdr_data == 00) { return 00; } l_current_ihdr_ptr = l_ihdr_data; opj_write_bytes(l_current_ihdr_ptr,22,4); /* write box size */ l_current_ihdr_ptr+=4; opj_write_bytes(l_current_ihdr_ptr,JP2_IHDR, 4); /* IHDR */ l_current_ihdr_ptr+=4; opj_write_bytes(l_current_ihdr_ptr,jp2->h, 4); /* HEIGHT */ l_current_ihdr_ptr+=4; opj_write_bytes(l_current_ihdr_ptr, jp2->w, 4); /* WIDTH */ l_current_ihdr_ptr+=4; opj_write_bytes(l_current_ihdr_ptr, jp2->numcomps, 2); /* NC */ l_current_ihdr_ptr+=2; opj_write_bytes(l_current_ihdr_ptr, jp2->bpc, 1); /* BPC */ ++l_current_ihdr_ptr; opj_write_bytes(l_current_ihdr_ptr, jp2->C, 1); /* C : Always 7 */ ++l_current_ihdr_ptr; opj_write_bytes(l_current_ihdr_ptr, jp2->UnkC, 1); /* UnkC, colorspace unknown */ ++l_current_ihdr_ptr; opj_write_bytes(l_current_ihdr_ptr, jp2->IPR, 1); /* IPR, no intellectual property */ ++l_current_ihdr_ptr; *p_nb_bytes_written = 22; return l_ihdr_data; } OPJ_BYTE * opj_jp2_write_bpcc( opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ) { OPJ_UINT32 i; /* room for 8 bytes for box and 1 byte for each component */ OPJ_UINT32 l_bpcc_size = 8 + jp2->numcomps; OPJ_BYTE * l_bpcc_data,* l_current_bpcc_ptr; /* preconditions */ assert(jp2 != 00); assert(p_nb_bytes_written != 00); l_bpcc_data = (OPJ_BYTE *) opj_calloc(1,l_bpcc_size); if (l_bpcc_data == 00) { return 00; } l_current_bpcc_ptr = l_bpcc_data; opj_write_bytes(l_current_bpcc_ptr,l_bpcc_size,4); /* write box size */ l_current_bpcc_ptr += 4; opj_write_bytes(l_current_bpcc_ptr,JP2_BPCC,4); /* BPCC */ l_current_bpcc_ptr += 4; for (i = 0; i < jp2->numcomps; ++i) { opj_write_bytes(l_current_bpcc_ptr, jp2->comps[i].bpcc, 1); /* write each component information */ ++l_current_bpcc_ptr; } *p_nb_bytes_written = l_bpcc_size; return l_bpcc_data; } OPJ_BOOL opj_jp2_read_bpcc( opj_jp2_t *jp2, OPJ_BYTE * p_bpc_header_data, OPJ_UINT32 p_bpc_header_size, opj_event_mgr_t * p_manager ) { OPJ_UINT32 i; /* preconditions */ assert(p_bpc_header_data != 00); assert(jp2 != 00); assert(p_manager != 00); if (jp2->bpc != 255 ){ opj_event_msg(p_manager, EVT_WARNING, "A BPCC header box is available although BPC given by the IHDR box (%d) indicate components bit depth is constant\n",jp2->bpc); } /* and length is relevant */ if (p_bpc_header_size != jp2->numcomps) { opj_event_msg(p_manager, EVT_ERROR, "Bad BPCC header box (bad size)\n"); return OPJ_FALSE; } /* read info for each component */ for (i = 0; i < jp2->numcomps; ++i) { opj_read_bytes(p_bpc_header_data,&jp2->comps[i].bpcc ,1); /* read each BPCC component */ ++p_bpc_header_data; } return OPJ_TRUE; } static OPJ_BYTE * opj_jp2_write_cdef(opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written) { /* room for 8 bytes for box, 2 for n */ OPJ_UINT32 l_cdef_size = 10; OPJ_BYTE * l_cdef_data,* l_current_cdef_ptr; OPJ_UINT32 l_value; OPJ_UINT16 i; /* preconditions */ assert(jp2 != 00); assert(p_nb_bytes_written != 00); assert(jp2->color.jp2_cdef != 00); assert(jp2->color.jp2_cdef->info != 00); assert(jp2->color.jp2_cdef->n > 0U); l_cdef_size += 6U * jp2->color.jp2_cdef->n; l_cdef_data = (OPJ_BYTE *) opj_malloc(l_cdef_size); if (l_cdef_data == 00) { return 00; } l_current_cdef_ptr = l_cdef_data; opj_write_bytes(l_current_cdef_ptr,l_cdef_size,4); /* write box size */ l_current_cdef_ptr += 4; opj_write_bytes(l_current_cdef_ptr,JP2_CDEF,4); /* BPCC */ l_current_cdef_ptr += 4; l_value = jp2->color.jp2_cdef->n; opj_write_bytes(l_current_cdef_ptr,l_value,2); /* N */ l_current_cdef_ptr += 2; for (i = 0U; i < jp2->color.jp2_cdef->n; ++i) { l_value = jp2->color.jp2_cdef->info[i].cn; opj_write_bytes(l_current_cdef_ptr,l_value,2); /* Cni */ l_current_cdef_ptr += 2; l_value = jp2->color.jp2_cdef->info[i].typ; opj_write_bytes(l_current_cdef_ptr,l_value,2); /* Typi */ l_current_cdef_ptr += 2; l_value = jp2->color.jp2_cdef->info[i].asoc; opj_write_bytes(l_current_cdef_ptr,l_value,2); /* Asoci */ l_current_cdef_ptr += 2; } *p_nb_bytes_written = l_cdef_size; return l_cdef_data; } OPJ_BYTE * opj_jp2_write_colr( opj_jp2_t *jp2, OPJ_UINT32 * p_nb_bytes_written ) { /* room for 8 bytes for box 3 for common data and variable upon profile*/ OPJ_UINT32 l_colr_size = 11; OPJ_BYTE * l_colr_data,* l_current_colr_ptr; /* preconditions */ assert(jp2 != 00); assert(p_nb_bytes_written != 00); assert(jp2->meth == 1 || jp2->meth == 2); switch (jp2->meth) { case 1 : l_colr_size += 4; /* EnumCS */ break; case 2 : assert(jp2->color.icc_profile_len); /* ICC profile */ l_colr_size += jp2->color.icc_profile_len; break; default : return 00; } l_colr_data = (OPJ_BYTE *) opj_calloc(1,l_colr_size); if (l_colr_data == 00) { return 00; } l_current_colr_ptr = l_colr_data; opj_write_bytes(l_current_colr_ptr,l_colr_size,4); /* write box size */ l_current_colr_ptr += 4; opj_write_bytes(l_current_colr_ptr,JP2_COLR,4); /* BPCC */ l_current_colr_ptr += 4; opj_write_bytes(l_current_colr_ptr, jp2->meth,1); /* METH */ ++l_current_colr_ptr; opj_write_bytes(l_current_colr_ptr, jp2->precedence,1); /* PRECEDENCE */ ++l_current_colr_ptr; opj_write_bytes(l_current_colr_ptr, jp2->approx,1); /* APPROX */ ++l_current_colr_ptr; if (jp2->meth == 1) { /* Meth value is restricted to 1 or 2 (Table I.9 of part 1) */ opj_write_bytes(l_current_colr_ptr, jp2->enumcs,4); } /* EnumCS */ else { if (jp2->meth == 2) { /* ICC profile */ OPJ_UINT32 i; for(i = 0; i < jp2->color.icc_profile_len; ++i) { opj_write_bytes(l_current_colr_ptr, jp2->color.icc_profile_buf[i], 1); ++l_current_colr_ptr; } } } *p_nb_bytes_written = l_colr_size; return l_colr_data; } void opj_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 OPJ_BOOL opj_jp2_check_color(opj_image_t *image, opj_jp2_color_t *color, opj_event_mgr_t *p_manager) { OPJ_UINT16 i; /* testcase 4149.pdf.SIGSEGV.cf7.3501 */ if (color->jp2_cdef) { opj_jp2_cdef_info_t *info = color->jp2_cdef->info; OPJ_UINT16 n = color->jp2_cdef->n; OPJ_UINT32 nr_channels = image->numcomps; /* FIXME image->numcomps == jp2->numcomps before color is applied ??? */ /* cdef applies to cmap channels if any */ if (color->jp2_pclr && color->jp2_pclr->cmap) { nr_channels = (OPJ_UINT32)color->jp2_pclr->nr_channels; } for (i = 0; i < n; i++) { if (info[i].cn >= nr_channels) { opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n", info[i].cn, nr_channels); return OPJ_FALSE; } if (info[i].asoc > 0 && (OPJ_UINT32)(info[i].asoc - 1) >= nr_channels) { opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n", info[i].asoc - 1, nr_channels); return OPJ_FALSE; } } /* issue 397 */ /* ISO 15444-1 states that if cdef is present, it shall contain a complete list of channel definitions. */ while (nr_channels > 0) { for(i = 0; i < n; ++i) { if ((OPJ_UINT32)info[i].cn == (nr_channels - 1U)) { break; } } if (i == n) { opj_event_msg(p_manager, EVT_ERROR, "Incomplete channel definitions.\n"); return OPJ_FALSE; } --nr_channels; } } /* testcases 451.pdf.SIGSEGV.f4c.3723, 451.pdf.SIGSEGV.5b5.3723 and 66ea31acbb0f23a2bbc91f64d69a03f5_signal_sigsegv_13937c0_7030_5725.pdf */ if (color->jp2_pclr && color->jp2_pclr->cmap) { OPJ_UINT16 nr_channels = color->jp2_pclr->nr_channels; opj_jp2_cmap_comp_t *cmap = color->jp2_pclr->cmap; OPJ_BOOL *pcol_usage, is_sane = OPJ_TRUE; /* verify that all original components match an existing one */ for (i = 0; i < nr_channels; i++) { if (cmap[i].cmp >= image->numcomps) { opj_event_msg(p_manager, EVT_ERROR, "Invalid component index %d (>= %d).\n", cmap[i].cmp, image->numcomps); is_sane = OPJ_FALSE; } } pcol_usage = opj_calloc(nr_channels, sizeof(OPJ_BOOL)); if (!pcol_usage) { opj_event_msg(p_manager, EVT_ERROR, "Unexpected OOM.\n"); return OPJ_FALSE; } /* verify that no component is targeted more than once */ for (i = 0; i < nr_channels; i++) { OPJ_UINT16 pcol = cmap[i].pcol; assert(cmap[i].mtyp == 0 || cmap[i].mtyp == 1); if (pcol >= nr_channels) { opj_event_msg(p_manager, EVT_ERROR, "Invalid component/palette index for direct mapping %d.\n", pcol); is_sane = OPJ_FALSE; } else if (pcol_usage[pcol] && cmap[i].mtyp == 1) { opj_event_msg(p_manager, EVT_ERROR, "Component %d is mapped twice.\n", pcol); is_sane = OPJ_FALSE; } else if (cmap[i].mtyp == 0 && cmap[i].pcol != 0) { /* I.5.3.5 PCOL: If the value of the MTYP field for this channel is 0, then * the value of this field shall be 0. */ opj_event_msg(p_manager, EVT_ERROR, "Direct use at #%d however pcol=%d.\n", i, pcol); is_sane = OPJ_FALSE; } else pcol_usage[pcol] = OPJ_TRUE; } /* verify that all components are targeted at least once */ for (i = 0; i < nr_channels; i++) { if (!pcol_usage[i] && cmap[i].mtyp != 0) { opj_event_msg(p_manager, EVT_ERROR, "Component %d doesn't have a mapping.\n", i); is_sane = OPJ_FALSE; } } opj_free(pcol_usage); if (!is_sane) { return OPJ_FALSE; } } return OPJ_TRUE; } /* file9.jp2 */ void opj_jp2_apply_pclr(opj_image_t *image, opj_jp2_color_t *color) { opj_image_comp_t *old_comps, *new_comps; OPJ_BYTE *channel_size, *channel_sign; OPJ_UINT32 *entries; opj_jp2_cmap_comp_t *cmap; OPJ_INT32 *src, *dst; OPJ_UINT32 j, max; OPJ_UINT16 i, nr_channels, cmp, pcol; OPJ_INT32 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)); if (!new_comps) { /* FIXME no error code for opj_jp2_apply_pclr */ /* FIXME event manager error callback */ return; } for(i = 0; i < nr_channels; ++i) { pcol = cmap[i].pcol; cmp = cmap[i].cmp; /* Direct use */ if(cmap[i].mtyp == 0){ assert( pcol == 0 ); new_comps[i] = old_comps[cmp]; } else { assert( i == pcol ); new_comps[pcol] = old_comps[cmp]; } /* Palette mapping: */ new_comps[i].data = (OPJ_INT32*) opj_malloc(old_comps[cmp].w * old_comps[cmp].h * sizeof(OPJ_INT32)); if (!new_comps[i].data) { opj_free(new_comps); new_comps = NULL; /* FIXME no error code for opj_jp2_apply_pclr */ /* FIXME event manager error callback */ return; } new_comps[i].prec = channel_size[i]; new_comps[i].sgnd = channel_sign[i]; } top_k = color->jp2_pclr->nr_entries - 1; for(i = 0; i < nr_channels; ++i) { /* Palette mapping: */ cmp = cmap[i].cmp; pcol = cmap[i].pcol; src = old_comps[cmp].data; assert( src ); max = new_comps[pcol].w * new_comps[pcol].h; /* Direct use: */ if(cmap[i].mtyp == 0) { assert( cmp == 0 ); dst = new_comps[i].data; assert( dst ); for(j = 0; j < max; ++j) { dst[j] = src[j]; } } else { assert( i == pcol ); dst = new_comps[pcol].data; assert( dst ); 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] = (OPJ_INT32)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; opj_jp2_free_pclr(color); }/* apply_pclr() */ OPJ_BOOL opj_jp2_read_pclr( opj_jp2_t *jp2, OPJ_BYTE * p_pclr_header_data, OPJ_UINT32 p_pclr_header_size, opj_event_mgr_t * p_manager ) { opj_jp2_pclr_t *jp2_pclr; OPJ_BYTE *channel_size, *channel_sign; OPJ_UINT32 *entries; OPJ_UINT16 nr_entries,nr_channels; OPJ_UINT16 i, j; OPJ_UINT32 l_value; OPJ_BYTE *orig_header_data = p_pclr_header_data; /* preconditions */ assert(p_pclr_header_data != 00); assert(jp2 != 00); assert(p_manager != 00); (void)p_pclr_header_size; if(jp2->color.jp2_pclr) return OPJ_FALSE; if (p_pclr_header_size < 3) return OPJ_FALSE; opj_read_bytes(p_pclr_header_data, &l_value , 2); /* NE */ p_pclr_header_data += 2; nr_entries = (OPJ_UINT16) l_value; if ((nr_entries == 0U) || (nr_entries > 1024U)) { opj_event_msg(p_manager, EVT_ERROR, "Invalid PCLR box. Reports %d entries\n", (int)nr_entries); return OPJ_FALSE; } opj_read_bytes(p_pclr_header_data, &l_value , 1); /* NPC */ ++p_pclr_header_data; nr_channels = (OPJ_UINT16) l_value; if (nr_channels == 0U) { opj_event_msg(p_manager, EVT_ERROR, "Invalid PCLR box. Reports 0 palette columns\n"); return OPJ_FALSE; } if (p_pclr_header_size < 3 + (OPJ_UINT32)nr_channels) return OPJ_FALSE; entries = (OPJ_UINT32*) opj_malloc((size_t)nr_channels * nr_entries * sizeof(OPJ_UINT32)); if (!entries) return OPJ_FALSE; channel_size = (OPJ_BYTE*) opj_malloc(nr_channels); if (!channel_size) { opj_free(entries); return OPJ_FALSE; } channel_sign = (OPJ_BYTE*) opj_malloc(nr_channels); if (!channel_sign) { opj_free(entries); opj_free(channel_size); return OPJ_FALSE; } jp2_pclr = (opj_jp2_pclr_t*)opj_malloc(sizeof(opj_jp2_pclr_t)); if (!jp2_pclr) { opj_free(entries); opj_free(channel_size); opj_free(channel_sign); return OPJ_FALSE; } 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 = (OPJ_BYTE) l_value; jp2_pclr->cmap = NULL; jp2->color.jp2_pclr = jp2_pclr; for(i = 0; i < nr_channels; ++i) { opj_read_bytes(p_pclr_header_data, &l_value , 1); /* Bi */ ++p_pclr_header_data; channel_size[i] = (OPJ_BYTE)((l_value & 0x7f) + 1); channel_sign[i] = (l_value & 0x80) ? 1 : 0; } for(j = 0; j < nr_entries; ++j) { for(i = 0; i < nr_channels; ++i) { OPJ_UINT32 bytes_to_read = (OPJ_UINT32)((channel_size[i]+7)>>3); if (bytes_to_read > sizeof(OPJ_UINT32)) bytes_to_read = sizeof(OPJ_UINT32); if ((ptrdiff_t)p_pclr_header_size < (ptrdiff_t)(p_pclr_header_data - orig_header_data) + (ptrdiff_t)bytes_to_read) return OPJ_FALSE; opj_read_bytes(p_pclr_header_data, &l_value , bytes_to_read); /* Cji */ p_pclr_header_data += bytes_to_read; *entries = (OPJ_UINT32) l_value; entries++; } } return OPJ_TRUE; } OPJ_BOOL opj_jp2_read_cmap( opj_jp2_t * jp2, OPJ_BYTE * p_cmap_header_data, OPJ_UINT32 p_cmap_header_size, opj_event_mgr_t * p_manager ) { opj_jp2_cmap_comp_t *cmap; OPJ_BYTE i, nr_channels; OPJ_UINT32 l_value; /* preconditions */ assert(jp2 != 00); assert(p_cmap_header_data != 00); assert(p_manager != 00); (void)p_cmap_header_size; /* Need nr_channels: */ if(jp2->color.jp2_pclr == NULL) { opj_event_msg(p_manager, EVT_ERROR, "Need to read a PCLR box before the CMAP box.\n"); return OPJ_FALSE; } /* Part 1, I.5.3.5: 'There shall be at most one Component Mapping box * inside a JP2 Header box' : */ if(jp2->color.jp2_pclr->cmap) { opj_event_msg(p_manager, EVT_ERROR, "Only one CMAP box is allowed.\n"); return OPJ_FALSE; } nr_channels = jp2->color.jp2_pclr->nr_channels; if (p_cmap_header_size < (OPJ_UINT32)nr_channels * 4) { opj_event_msg(p_manager, EVT_ERROR, "Insufficient data for CMAP box.\n"); return OPJ_FALSE; } cmap = (opj_jp2_cmap_comp_t*) opj_malloc(nr_channels * sizeof(opj_jp2_cmap_comp_t)); if (!cmap) return OPJ_FALSE; for(i = 0; i < nr_channels; ++i) { opj_read_bytes(p_cmap_header_data, &l_value, 2); /* CMP^i */ p_cmap_header_data +=2; cmap[i].cmp = (OPJ_UINT16) l_value; opj_read_bytes(p_cmap_header_data, &l_value, 1); /* MTYP^i */ ++p_cmap_header_data; cmap[i].mtyp = (OPJ_BYTE) l_value; opj_read_bytes(p_cmap_header_data, &l_value, 1); /* PCOL^i */ ++p_cmap_header_data; cmap[i].pcol = (OPJ_BYTE) l_value; } jp2->color.jp2_pclr->cmap = cmap; return OPJ_TRUE; } void opj_jp2_apply_cdef(opj_image_t *image, opj_jp2_color_t *color) { opj_jp2_cdef_info_t *info; OPJ_UINT16 i, n, cn, asoc, acn; info = color->jp2_cdef->info; n = color->jp2_cdef->n; for(i = 0; i < n; ++i) { /* WATCH: acn = asoc - 1 ! */ asoc = info[i].asoc; cn = info[i].cn; if( cn >= image->numcomps) { fprintf(stderr, "cn=%d, numcomps=%d\n", cn, image->numcomps); continue; } if(asoc == 0 || asoc == 65535) { image->comps[cn].alpha = info[i].typ; continue; } acn = (OPJ_UINT16)(asoc - 1); if( acn >= image->numcomps ) { fprintf(stderr, "acn=%d, numcomps=%d\n", acn, image->numcomps); continue; } /* Swap only if color channel */ if((cn != acn) && (info[i].typ == 0)) { opj_image_comp_t saved; OPJ_UINT16 j; 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)); /* Swap channels in following channel definitions, don't bother with j <= i that are already processed */ for (j = (OPJ_UINT16)(i + 1U); j < n ; ++j) { if (info[j].cn == cn) { info[j].cn = acn; } else if (info[j].cn == acn) { info[j].cn = cn; } /* asoc is related to color index. Do not update. */ } } image->comps[cn].alpha = info[i].typ; } if(color->jp2_cdef->info) opj_free(color->jp2_cdef->info); opj_free(color->jp2_cdef); color->jp2_cdef = NULL; }/* jp2_apply_cdef() */ OPJ_BOOL opj_jp2_read_cdef( opj_jp2_t * jp2, OPJ_BYTE * p_cdef_header_data, OPJ_UINT32 p_cdef_header_size, opj_event_mgr_t * p_manager ) { opj_jp2_cdef_info_t *cdef_info; OPJ_UINT16 i; OPJ_UINT32 l_value; /* preconditions */ assert(jp2 != 00); assert(p_cdef_header_data != 00); assert(p_manager != 00); (void)p_cdef_header_size; /* Part 1, I.5.3.6: 'The shall be at most one Channel Definition box * inside a JP2 Header box.'*/ if(jp2->color.jp2_cdef) return OPJ_FALSE; if (p_cdef_header_size < 2) { opj_event_msg(p_manager, EVT_ERROR, "Insufficient data for CDEF box.\n"); return OPJ_FALSE; } opj_read_bytes(p_cdef_header_data,&l_value ,2); /* N */ p_cdef_header_data+= 2; if ( (OPJ_UINT16)l_value == 0){ /* szukw000: FIXME */ opj_event_msg(p_manager, EVT_ERROR, "Number of channel description is equal to zero in CDEF box.\n"); return OPJ_FALSE; } if (p_cdef_header_size < 2 + (OPJ_UINT32)(OPJ_UINT16)l_value * 6) { opj_event_msg(p_manager, EVT_ERROR, "Insufficient data for CDEF box.\n"); return OPJ_FALSE; } cdef_info = (opj_jp2_cdef_info_t*) opj_malloc(l_value * sizeof(opj_jp2_cdef_info_t)); if (!cdef_info) return OPJ_FALSE; jp2->color.jp2_cdef = (opj_jp2_cdef_t*)opj_malloc(sizeof(opj_jp2_cdef_t)); if(!jp2->color.jp2_cdef) { opj_free(cdef_info); return OPJ_FALSE; } jp2->color.jp2_cdef->info = cdef_info; jp2->color.jp2_cdef->n = (OPJ_UINT16) l_value; for(i = 0; i < jp2->color.jp2_cdef->n; ++i) { opj_read_bytes(p_cdef_header_data, &l_value, 2); /* Cn^i */ p_cdef_header_data +=2; cdef_info[i].cn = (OPJ_UINT16) l_value; opj_read_bytes(p_cdef_header_data, &l_value, 2); /* Typ^i */ p_cdef_header_data +=2; cdef_info[i].typ = (OPJ_UINT16) l_value; opj_read_bytes(p_cdef_header_data, &l_value, 2); /* Asoc^i */ p_cdef_header_data +=2; cdef_info[i].asoc = (OPJ_UINT16) l_value; } return OPJ_TRUE; } OPJ_BOOL opj_jp2_read_colr( opj_jp2_t *jp2, OPJ_BYTE * p_colr_header_data, OPJ_UINT32 p_colr_header_size, opj_event_mgr_t * p_manager ) { OPJ_UINT32 l_value; /* preconditions */ assert(jp2 != 00); assert(p_colr_header_data != 00); assert(p_manager != 00); if (p_colr_header_size < 3) { opj_event_msg(p_manager, EVT_ERROR, "Bad COLR header box (bad size)\n"); return OPJ_FALSE; } /* Part 1, I.5.3.3 : 'A conforming JP2 reader shall ignore all Colour * Specification boxes after the first.' */ if(jp2->color.jp2_has_colr) { opj_event_msg(p_manager, EVT_INFO, "A conforming JP2 reader shall ignore all Colour Specification boxes after the first, so we ignore this one.\n"); p_colr_header_data += p_colr_header_size; return OPJ_TRUE; } opj_read_bytes(p_colr_header_data,&jp2->meth ,1); /* METH */ ++p_colr_header_data; opj_read_bytes(p_colr_header_data,&jp2->precedence ,1); /* PRECEDENCE */ ++p_colr_header_data; opj_read_bytes(p_colr_header_data,&jp2->approx ,1); /* APPROX */ ++p_colr_header_data; if (jp2->meth == 1) { if (p_colr_header_size < 7) { opj_event_msg(p_manager, EVT_ERROR, "Bad COLR header box (bad size: %d)\n", p_colr_header_size); return OPJ_FALSE; } if (p_colr_header_size > 7) { /* testcase Altona_Technical_v20_x4.pdf */ opj_event_msg(p_manager, EVT_WARNING, "Bad COLR header box (bad size: %d)\n", p_colr_header_size); } opj_read_bytes(p_colr_header_data,&jp2->enumcs ,4); /* EnumCS */ jp2->color.jp2_has_colr = 1; } else if (jp2->meth == 2) { /* ICC profile */ OPJ_INT32 it_icc_value = 0; OPJ_INT32 icc_len = (OPJ_INT32)p_colr_header_size - 3; jp2->color.icc_profile_len = (OPJ_UINT32)icc_len; jp2->color.icc_profile_buf = (OPJ_BYTE*) opj_calloc(1,(size_t)icc_len); if (!jp2->color.icc_profile_buf) { jp2->color.icc_profile_len = 0; return OPJ_FALSE; } for (it_icc_value = 0; it_icc_value < icc_len; ++it_icc_value) { opj_read_bytes(p_colr_header_data,&l_value,1); /* icc values */ ++p_colr_header_data; jp2->color.icc_profile_buf[it_icc_value] = (OPJ_BYTE) l_value; } jp2->color.jp2_has_colr = 1; } else if (jp2->meth > 2) { /* ISO/IEC 15444-1:2004 (E), Table I.9 Legal METH values: conforming JP2 reader shall ignore the entire Colour Specification box.*/ opj_event_msg(p_manager, EVT_INFO, "COLR BOX meth value is not a regular value (%d), " "so we will ignore the entire Colour Specification box. \n", jp2->meth); } return OPJ_TRUE; } OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2, opj_stream_private_t *p_stream, opj_image_t* p_image, opj_event_mgr_t * p_manager) { if (!p_image) return OPJ_FALSE; /* J2K decoding */ if( ! opj_j2k_decode(jp2->j2k, p_stream, p_image, p_manager) ) { opj_event_msg(p_manager, EVT_ERROR, "Failed to decode the codestream in the JP2 file\n"); return OPJ_FALSE; } if (!jp2->ignore_pclr_cmap_cdef){ if (!opj_jp2_check_color(p_image, &(jp2->color), p_manager)) { return OPJ_FALSE; } /* Set Image Color Space */ if (jp2->enumcs == 16) p_image->color_space = OPJ_CLRSPC_SRGB; else if (jp2->enumcs == 17) p_image->color_space = OPJ_CLRSPC_GRAY; else if (jp2->enumcs == 18) p_image->color_space = OPJ_CLRSPC_SYCC; else if (jp2->enumcs == 24) p_image->color_space = OPJ_CLRSPC_EYCC; else p_image->color_space = OPJ_CLRSPC_UNKNOWN; if(jp2->color.jp2_pclr) { /* Part 1, I.5.3.4: Either both or none : */ if( !jp2->color.jp2_pclr->cmap) opj_jp2_free_pclr(&(jp2->color)); else opj_jp2_apply_pclr(p_image, &(jp2->color)); } /* Apply the color space if needed */ if(jp2->color.jp2_cdef) { opj_jp2_apply_cdef(p_image, &(jp2->color)); } if(jp2->color.icc_profile_buf) { p_image->icc_profile_buf = jp2->color.icc_profile_buf; p_image->icc_profile_len = jp2->color.icc_profile_len; jp2->color.icc_profile_buf = NULL; } } return OPJ_TRUE; } OPJ_BOOL opj_jp2_write_jp2h(opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ) { opj_jp2_img_header_writer_handler_t l_writers [4]; opj_jp2_img_header_writer_handler_t * l_current_writer; OPJ_INT32 i, l_nb_pass; /* size of data for super box*/ OPJ_UINT32 l_jp2h_size = 8; OPJ_BOOL l_result = OPJ_TRUE; /* to store the data of the super box */ OPJ_BYTE l_jp2h_data [8]; /* preconditions */ assert(stream != 00); assert(jp2 != 00); assert(p_manager != 00); memset(l_writers,0,sizeof(l_writers)); if (jp2->bpc == 255) { l_nb_pass = 3; l_writers[0].handler = opj_jp2_write_ihdr; l_writers[1].handler = opj_jp2_write_bpcc; l_writers[2].handler = opj_jp2_write_colr; } else { l_nb_pass = 2; l_writers[0].handler = opj_jp2_write_ihdr; l_writers[1].handler = opj_jp2_write_colr; } if (jp2->color.jp2_cdef != NULL) { l_writers[l_nb_pass].handler = opj_jp2_write_cdef; l_nb_pass++; } /* write box header */ /* write JP2H type */ opj_write_bytes(l_jp2h_data+4,JP2_JP2H,4); l_current_writer = l_writers; for (i=0;i<l_nb_pass;++i) { l_current_writer->m_data = l_current_writer->handler(jp2,&(l_current_writer->m_size)); if (l_current_writer->m_data == 00) { opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to hold JP2 Header data\n"); l_result = OPJ_FALSE; break; } l_jp2h_size += l_current_writer->m_size; ++l_current_writer; } if (! l_result) { l_current_writer = l_writers; for (i=0;i<l_nb_pass;++i) { if (l_current_writer->m_data != 00) { opj_free(l_current_writer->m_data ); } ++l_current_writer; } return OPJ_FALSE; } /* write super box size */ opj_write_bytes(l_jp2h_data,l_jp2h_size,4); /* write super box data on stream */ if (opj_stream_write_data(stream,l_jp2h_data,8,p_manager) != 8) { opj_event_msg(p_manager, EVT_ERROR, "Stream error while writing JP2 Header box\n"); l_result = OPJ_FALSE; } if (l_result) { l_current_writer = l_writers; for (i=0;i<l_nb_pass;++i) { if (opj_stream_write_data(stream,l_current_writer->m_data,l_current_writer->m_size,p_manager) != l_current_writer->m_size) { opj_event_msg(p_manager, EVT_ERROR, "Stream error while writing JP2 Header box\n"); l_result = OPJ_FALSE; break; } ++l_current_writer; } } l_current_writer = l_writers; /* cleanup */ for (i=0;i<l_nb_pass;++i) { if (l_current_writer->m_data != 00) { opj_free(l_current_writer->m_data ); } ++l_current_writer; } return l_result; } OPJ_BOOL opj_jp2_write_ftyp(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_UINT32 i; OPJ_UINT32 l_ftyp_size = 16 + 4 * jp2->numcl; OPJ_BYTE * l_ftyp_data, * l_current_data_ptr; OPJ_BOOL l_result; /* preconditions */ assert(cio != 00); assert(jp2 != 00); assert(p_manager != 00); l_ftyp_data = (OPJ_BYTE *) opj_calloc(1,l_ftyp_size); if (l_ftyp_data == 00) { opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to handle ftyp data\n"); return OPJ_FALSE; } l_current_data_ptr = l_ftyp_data; opj_write_bytes(l_current_data_ptr, l_ftyp_size,4); /* box size */ l_current_data_ptr += 4; opj_write_bytes(l_current_data_ptr, JP2_FTYP,4); /* FTYP */ l_current_data_ptr += 4; opj_write_bytes(l_current_data_ptr, jp2->brand,4); /* BR */ l_current_data_ptr += 4; opj_write_bytes(l_current_data_ptr, jp2->minversion,4); /* MinV */ l_current_data_ptr += 4; for (i = 0; i < jp2->numcl; i++) { opj_write_bytes(l_current_data_ptr, jp2->cl[i],4); /* CL */ } l_result = (opj_stream_write_data(cio,l_ftyp_data,l_ftyp_size,p_manager) == l_ftyp_size); if (! l_result) { opj_event_msg(p_manager, EVT_ERROR, "Error while writing ftyp data to stream\n"); } opj_free(l_ftyp_data); return l_result; } OPJ_BOOL opj_jp2_write_jp2c(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_OFF_T j2k_codestream_exit; OPJ_BYTE l_data_header [8]; /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); assert(opj_stream_has_seek(cio)); j2k_codestream_exit = opj_stream_tell(cio); opj_write_bytes(l_data_header, (OPJ_UINT32) (j2k_codestream_exit - jp2->j2k_codestream_offset), 4); /* size of codestream */ opj_write_bytes(l_data_header + 4,JP2_JP2C,4); /* JP2C */ if (! opj_stream_seek(cio,jp2->j2k_codestream_offset,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } if (opj_stream_write_data(cio,l_data_header,8,p_manager) != 8) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } if (! opj_stream_seek(cio,j2k_codestream_exit,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } return OPJ_TRUE; } OPJ_BOOL opj_jp2_write_jp( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { /* 12 bytes will be read */ OPJ_BYTE l_signature_data [12]; /* preconditions */ assert(cio != 00); assert(jp2 != 00); assert(p_manager != 00); /* write box length */ opj_write_bytes(l_signature_data,12,4); /* writes box type */ opj_write_bytes(l_signature_data+4,JP2_JP,4); /* writes magic number*/ opj_write_bytes(l_signature_data+8,0x0d0a870a,4); if (opj_stream_write_data(cio,l_signature_data,12,p_manager) != 12) { return OPJ_FALSE; } return OPJ_TRUE; } /* ----------------------------------------------------------------------- */ /* JP2 decoder interface */ /* ----------------------------------------------------------------------- */ void opj_jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters) { /* setup the J2K codec */ opj_j2k_setup_decoder(jp2->j2k, parameters); /* further JP2 initializations go here */ jp2->color.jp2_has_colr = 0; jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG; } /* ----------------------------------------------------------------------- */ /* JP2 encoder interface */ /* ----------------------------------------------------------------------- */ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image, opj_event_mgr_t * p_manager) { OPJ_UINT32 i; OPJ_UINT32 depth_0; OPJ_UINT32 sign; OPJ_UINT32 alpha_count; OPJ_UINT32 color_channels = 0U; OPJ_UINT32 alpha_channel = 0U; if(!jp2 || !parameters || !image) return OPJ_FALSE; /* setup the J2K codec */ /* ------------------- */ /* Check if number of components respects standard */ if (image->numcomps < 1 || image->numcomps > 16384) { opj_event_msg(p_manager, EVT_ERROR, "Invalid number of components specified while setting up JP2 encoder\n"); return OPJ_FALSE; } if (opj_j2k_setup_encoder(jp2->j2k, parameters, image, p_manager ) == OPJ_FALSE) { return OPJ_FALSE; } /* setup the JP2 codec */ /* ------------------- */ /* Profile box */ jp2->brand = JP2_JP2; /* BR */ jp2->minversion = 0; /* MinV */ jp2->numcl = 1; jp2->cl = (OPJ_UINT32*) opj_malloc(jp2->numcl * sizeof(OPJ_UINT32)); if (!jp2->cl){ jp2->cl = NULL; opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n"); return OPJ_FALSE; } 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)); if (!jp2->comps) { jp2->comps = NULL; opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n"); /* Memory of jp2->cl will be freed by opj_jp2_destroy */ return OPJ_FALSE; } 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++) { OPJ_UINT32 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); } /* Colour Specification box */ if(image->icc_profile_len) { jp2->meth = 2; jp2->enumcs = 0; } else { 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 */ } /* Channel Definition box */ /* FIXME not provided by parameters */ /* We try to do what we can... */ alpha_count = 0U; for (i = 0; i < image->numcomps; i++) { if (image->comps[i].alpha != 0) { alpha_count++; alpha_channel = i; } } if (alpha_count == 1U) { /* no way to deal with more than 1 alpha channel */ switch (jp2->enumcs) { case 16: case 18: color_channels = 3; break; case 17: color_channels = 1; break; default: alpha_count = 0U; break; } if (alpha_count == 0U) { opj_event_msg(p_manager, EVT_WARNING, "Alpha channel specified but unknown enumcs. No cdef box will be created.\n"); } else if (image->numcomps < (color_channels+1)) { opj_event_msg(p_manager, EVT_WARNING, "Alpha channel specified but not enough image components for an automatic cdef box creation.\n"); alpha_count = 0U; } else if ((OPJ_UINT32)alpha_channel < color_channels) { opj_event_msg(p_manager, EVT_WARNING, "Alpha channel position conflicts with color channel. No cdef box will be created.\n"); alpha_count = 0U; } } else if (alpha_count > 1) { opj_event_msg(p_manager, EVT_WARNING, "Multiple alpha channels specified. No cdef box will be created.\n"); } if (alpha_count == 1U) { /* if here, we know what we can do */ jp2->color.jp2_cdef = (opj_jp2_cdef_t*)opj_malloc(sizeof(opj_jp2_cdef_t)); if(!jp2->color.jp2_cdef) { opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to setup the JP2 encoder\n"); return OPJ_FALSE; } /* no memset needed, all values will be overwritten except if jp2->color.jp2_cdef->info allocation fails, */ /* in which case jp2->color.jp2_cdef->info will be NULL => valid for destruction */ jp2->color.jp2_cdef->info = (opj_jp2_cdef_info_t*) opj_malloc(image->numcomps * sizeof(opj_jp2_cdef_info_t)); if (!jp2->color.jp2_cdef->info) { /* memory will be freed by opj_jp2_destroy */ opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to setup the JP2 encoder\n"); return OPJ_FALSE; } jp2->color.jp2_cdef->n = (OPJ_UINT16) image->numcomps; /* cast is valid : image->numcomps [1,16384] */ for (i = 0U; i < color_channels; i++) { jp2->color.jp2_cdef->info[i].cn = (OPJ_UINT16)i; /* cast is valid : image->numcomps [1,16384] */ jp2->color.jp2_cdef->info[i].typ = 0U; jp2->color.jp2_cdef->info[i].asoc = (OPJ_UINT16)(i+1U); /* No overflow + cast is valid : image->numcomps [1,16384] */ } for (; i < image->numcomps; i++) { if (image->comps[i].alpha != 0) { /* we'll be here exactly once */ jp2->color.jp2_cdef->info[i].cn = (OPJ_UINT16)i; /* cast is valid : image->numcomps [1,16384] */ jp2->color.jp2_cdef->info[i].typ = 1U; /* Opacity channel */ jp2->color.jp2_cdef->info[i].asoc = 0U; /* Apply alpha channel to the whole image */ } else { /* Unknown channel */ jp2->color.jp2_cdef->info[i].cn = (OPJ_UINT16)i; /* cast is valid : image->numcomps [1,16384] */ jp2->color.jp2_cdef->info[i].typ = 65535U; jp2->color.jp2_cdef->info[i].asoc = 65535U; } } } jp2->precedence = 0; /* PRECEDENCE */ jp2->approx = 0; /* APPROX */ jp2->jpip_on = parameters->jpip_on; return OPJ_TRUE; } OPJ_BOOL opj_jp2_encode(opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t * p_manager) { return opj_j2k_encode(jp2->j2k, stream, p_manager); } OPJ_BOOL opj_jp2_end_decompress(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); /* customization of the end encoding */ opj_jp2_setup_end_header_reading(jp2); /* write header */ if (! opj_jp2_exec (jp2,jp2->m_procedure_list,cio,p_manager)) { return OPJ_FALSE; } return opj_j2k_end_decompress(jp2->j2k, cio, p_manager); } OPJ_BOOL opj_jp2_end_compress( opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); /* customization of the end encoding */ opj_jp2_setup_end_header_writing(jp2); if (! opj_j2k_end_compress(jp2->j2k,cio,p_manager)) { return OPJ_FALSE; } /* write header */ return opj_jp2_exec(jp2,jp2->m_procedure_list,cio,p_manager); } void opj_jp2_setup_end_header_writing (opj_jp2_t *jp2) { /* preconditions */ assert(jp2 != 00); #ifdef USE_JPIP if( jp2->jpip_on ) opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jpip_write_iptr ); #endif opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_write_jp2c ); /* DEVELOPER CORNER, add your custom procedures */ #ifdef USE_JPIP if( jp2->jpip_on ) { opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jpip_write_cidx ); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jpip_write_fidx ); } #endif } void opj_jp2_setup_end_header_reading (opj_jp2_t *jp2) { /* preconditions */ assert(jp2 != 00); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_read_header_procedure ); /* DEVELOPER CORNER, add your custom procedures */ } OPJ_BOOL opj_jp2_default_validation ( opj_jp2_t * jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_BOOL l_is_valid = OPJ_TRUE; OPJ_UINT32 i; /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); /* JPEG2000 codec validation */ /* STATE checking */ /* make sure the state is at 0 */ l_is_valid &= (jp2->jp2_state == JP2_STATE_NONE); /* make sure not reading a jp2h ???? WEIRD */ l_is_valid &= (jp2->jp2_img_state == JP2_IMG_STATE_NONE); /* POINTER validation */ /* make sure a j2k codec is present */ l_is_valid &= (jp2->j2k != 00); /* make sure a procedure list is present */ l_is_valid &= (jp2->m_procedure_list != 00); /* make sure a validation list is present */ l_is_valid &= (jp2->m_validation_list != 00); /* PARAMETER VALIDATION */ /* number of components */ l_is_valid &= (jp2->numcl > 0); /* width */ l_is_valid &= (jp2->h > 0); /* height */ l_is_valid &= (jp2->w > 0); /* precision */ for (i = 0; i < jp2->numcomps; ++i) { l_is_valid &= ((jp2->comps[i].bpcc & 0x7FU) < 38U); /* 0 is valid, ignore sign for check */ } /* METH */ l_is_valid &= ((jp2->meth > 0) && (jp2->meth < 3)); /* stream validation */ /* back and forth is needed */ l_is_valid &= opj_stream_has_seek(cio); return l_is_valid; } OPJ_BOOL opj_jp2_read_header_procedure( opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ) { opj_jp2_box_t box; OPJ_UINT32 l_nb_bytes_read; const opj_jp2_header_handler_t * l_current_handler; OPJ_UINT32 l_last_data_size = OPJ_BOX_SIZE; OPJ_UINT32 l_current_data_size; OPJ_BYTE * l_current_data = 00; /* preconditions */ assert(stream != 00); assert(jp2 != 00); assert(p_manager != 00); l_current_data = (OPJ_BYTE*)opj_calloc(1,l_last_data_size); if (l_current_data == 00) { opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to handle jpeg2000 file header\n"); return OPJ_FALSE; } while (opj_jp2_read_boxhdr(&box,&l_nb_bytes_read,stream,p_manager)) { /* is it the codestream box ? */ if (box.type == JP2_JP2C) { if (jp2->jp2_state & JP2_STATE_HEADER) { jp2->jp2_state |= JP2_STATE_CODESTREAM; opj_free(l_current_data); return OPJ_TRUE; } else { opj_event_msg(p_manager, EVT_ERROR, "bad placed jpeg codestream\n"); opj_free(l_current_data); return OPJ_FALSE; } } else if (box.length == 0) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of undefined sizes\n"); opj_free(l_current_data); return OPJ_FALSE; } /* testcase 1851.pdf.SIGSEGV.ce9.948 */ else if (box.length < l_nb_bytes_read) { opj_event_msg(p_manager, EVT_ERROR, "invalid box size %d (%x)\n", box.length, box.type); opj_free(l_current_data); return OPJ_FALSE; } l_current_handler = opj_jp2_find_handler(box.type); l_current_data_size = box.length - l_nb_bytes_read; if (l_current_handler != 00) { if ((OPJ_OFF_T)l_current_data_size > opj_stream_get_number_byte_left(stream)) { /* do not even try to malloc if we can't read */ opj_event_msg(p_manager, EVT_ERROR, "Invalid box size %d for box '%c%c%c%c'. Need %d bytes, %d bytes remaining \n", box.length, (OPJ_BYTE)(box.type>>24), (OPJ_BYTE)(box.type>>16), (OPJ_BYTE)(box.type>>8), (OPJ_BYTE)(box.type>>0), l_current_data_size, (OPJ_UINT32)opj_stream_get_number_byte_left(stream)); opj_free(l_current_data); return OPJ_FALSE; } if (l_current_data_size > l_last_data_size) { OPJ_BYTE* new_current_data = (OPJ_BYTE*)opj_realloc(l_current_data,l_current_data_size); if (!new_current_data) { opj_free(l_current_data); opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to handle jpeg2000 box\n"); return OPJ_FALSE; } l_current_data = new_current_data; l_last_data_size = l_current_data_size; } l_nb_bytes_read = (OPJ_UINT32)opj_stream_read_data(stream,l_current_data,l_current_data_size,p_manager); if (l_nb_bytes_read != l_current_data_size) { opj_event_msg(p_manager, EVT_ERROR, "Problem with reading JPEG2000 box, stream error\n"); opj_free(l_current_data); return OPJ_FALSE; } if (! l_current_handler->handler(jp2,l_current_data,l_current_data_size,p_manager)) { opj_free(l_current_data); return OPJ_FALSE; } } else { if (!(jp2->jp2_state & JP2_STATE_SIGNATURE)) { opj_event_msg(p_manager, EVT_ERROR, "Malformed JP2 file format: first box must be JPEG 2000 signature box\n"); opj_free(l_current_data); return OPJ_FALSE; } if (!(jp2->jp2_state & JP2_STATE_FILE_TYPE)) { opj_event_msg(p_manager, EVT_ERROR, "Malformed JP2 file format: second box must be file type box\n"); opj_free(l_current_data); return OPJ_FALSE; } jp2->jp2_state |= JP2_STATE_UNKNOWN; if (opj_stream_skip(stream,l_current_data_size,p_manager) != l_current_data_size) { opj_event_msg(p_manager, EVT_ERROR, "Problem with skipping JPEG2000 box, stream error\n"); opj_free(l_current_data); return OPJ_FALSE; } } } opj_free(l_current_data); return OPJ_TRUE; } /** * Excutes the given procedures on the given codec. * * @param p_procedure_list the list of procedures to execute * @param jp2 the jpeg2000 file codec to execute the procedures on. * @param stream the stream to execute the procedures on. * @param p_manager the user manager. * * @return true if all the procedures were successfully executed. */ static OPJ_BOOL opj_jp2_exec ( opj_jp2_t * jp2, opj_procedure_list_t * p_procedure_list, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ) { OPJ_BOOL (** l_procedure) (opj_jp2_t * jp2, opj_stream_private_t *, opj_event_mgr_t *) = 00; OPJ_BOOL l_result = OPJ_TRUE; OPJ_UINT32 l_nb_proc, i; /* preconditions */ assert(p_procedure_list != 00); assert(jp2 != 00); assert(stream != 00); assert(p_manager != 00); l_nb_proc = opj_procedure_list_get_nb_procedures(p_procedure_list); l_procedure = (OPJ_BOOL (**) (opj_jp2_t * jp2, opj_stream_private_t *, opj_event_mgr_t *)) opj_procedure_list_get_first_procedure(p_procedure_list); for (i=0;i<l_nb_proc;++i) { l_result = l_result && (*l_procedure) (jp2,stream,p_manager); ++l_procedure; } /* and clear the procedure list at the end. */ opj_procedure_list_clear(p_procedure_list); return l_result; } OPJ_BOOL opj_jp2_start_compress(opj_jp2_t *jp2, opj_stream_private_t *stream, opj_image_t * p_image, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(jp2 != 00); assert(stream != 00); assert(p_manager != 00); /* customization of the validation */ opj_jp2_setup_encoding_validation (jp2); /* validation of the parameters codec */ if (! opj_jp2_exec(jp2,jp2->m_validation_list,stream,p_manager)) { return OPJ_FALSE; } /* customization of the encoding */ opj_jp2_setup_header_writing(jp2); /* write header */ if (! opj_jp2_exec (jp2,jp2->m_procedure_list,stream,p_manager)) { return OPJ_FALSE; } return opj_j2k_start_compress(jp2->j2k,stream,p_image,p_manager); } const opj_jp2_header_handler_t * opj_jp2_find_handler (OPJ_UINT32 p_id) { OPJ_UINT32 i, l_handler_size = sizeof(jp2_header) / sizeof(opj_jp2_header_handler_t); for (i=0;i<l_handler_size;++i) { if (jp2_header[i].id == p_id) { return &jp2_header[i]; } } return NULL; } /** * Finds the image execution function related to the given box id. * * @param p_id the id of the handler to fetch. * * @return the given handler or 00 if it could not be found. */ static const opj_jp2_header_handler_t * opj_jp2_img_find_handler (OPJ_UINT32 p_id) { OPJ_UINT32 i, l_handler_size = sizeof(jp2_img_header) / sizeof(opj_jp2_header_handler_t); for (i=0;i<l_handler_size;++i) { if (jp2_img_header[i].id == p_id) { return &jp2_img_header[i]; } } return NULL; } /** * Reads a jpeg2000 file signature box. * * @param p_header_data the data contained in the signature box. * @param jp2 the jpeg2000 file codec. * @param p_header_size the size of the data contained in the signature box. * @param p_manager the user event manager. * * @return true if the file signature box is valid. */ static OPJ_BOOL opj_jp2_read_jp(opj_jp2_t *jp2, OPJ_BYTE * p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t * p_manager ) { OPJ_UINT32 l_magic_number; /* preconditions */ assert(p_header_data != 00); assert(jp2 != 00); assert(p_manager != 00); if (jp2->jp2_state != JP2_STATE_NONE) { opj_event_msg(p_manager, EVT_ERROR, "The signature box must be the first box in the file.\n"); return OPJ_FALSE; } /* assure length of data is correct (4 -> magic number) */ if (p_header_size != 4) { opj_event_msg(p_manager, EVT_ERROR, "Error with JP signature Box size\n"); return OPJ_FALSE; } /* rearrange data */ opj_read_bytes(p_header_data,&l_magic_number,4); if (l_magic_number != 0x0d0a870a ) { opj_event_msg(p_manager, EVT_ERROR, "Error with JP Signature : bad magic number\n"); return OPJ_FALSE; } jp2->jp2_state |= JP2_STATE_SIGNATURE; return OPJ_TRUE; } /** * Reads a a FTYP box - File type box * * @param p_header_data the data contained in the FTYP box. * @param jp2 the jpeg2000 file codec. * @param p_header_size the size of the data contained in the FTYP box. * @param p_manager the user event manager. * * @return true if the FTYP box is valid. */ static OPJ_BOOL opj_jp2_read_ftyp( opj_jp2_t *jp2, OPJ_BYTE * p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t * p_manager ) { OPJ_UINT32 i, l_remaining_bytes; /* preconditions */ assert(p_header_data != 00); assert(jp2 != 00); assert(p_manager != 00); if (jp2->jp2_state != JP2_STATE_SIGNATURE) { opj_event_msg(p_manager, EVT_ERROR, "The ftyp box must be the second box in the file.\n"); return OPJ_FALSE; } /* assure length of data is correct */ if (p_header_size < 8) { opj_event_msg(p_manager, EVT_ERROR, "Error with FTYP signature Box size\n"); return OPJ_FALSE; } opj_read_bytes(p_header_data,&jp2->brand,4); /* BR */ p_header_data += 4; opj_read_bytes(p_header_data,&jp2->minversion,4); /* MinV */ p_header_data += 4; l_remaining_bytes = p_header_size - 8; /* the number of remaining bytes should be a multiple of 4 */ if ((l_remaining_bytes & 0x3) != 0) { opj_event_msg(p_manager, EVT_ERROR, "Error with FTYP signature Box size\n"); return OPJ_FALSE; } /* div by 4 */ jp2->numcl = l_remaining_bytes >> 2; if (jp2->numcl) { jp2->cl = (OPJ_UINT32 *) opj_calloc(jp2->numcl, sizeof(OPJ_UINT32)); if (jp2->cl == 00) { opj_event_msg(p_manager, EVT_ERROR, "Not enough memory with FTYP Box\n"); return OPJ_FALSE; } } for (i = 0; i < jp2->numcl; ++i) { opj_read_bytes(p_header_data,&jp2->cl[i],4); /* CLi */ p_header_data += 4; } jp2->jp2_state |= JP2_STATE_FILE_TYPE; return OPJ_TRUE; } OPJ_BOOL opj_jp2_skip_jp2c( opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(jp2 != 00); assert(stream != 00); assert(p_manager != 00); jp2->j2k_codestream_offset = opj_stream_tell(stream); if (opj_stream_skip(stream,8,p_manager) != 8) { return OPJ_FALSE; } return OPJ_TRUE; } static OPJ_BOOL opj_jpip_skip_iptr( opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(jp2 != 00); assert(stream != 00); assert(p_manager != 00); jp2->jpip_iptr_offset = opj_stream_tell(stream); if (opj_stream_skip(stream,24,p_manager) != 24) { return OPJ_FALSE; } return OPJ_TRUE; } /** * Reads the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box). * * @param p_header_data the data contained in the file header box. * @param jp2 the jpeg2000 file codec. * @param p_header_size the size of the data contained in the file header box. * @param p_manager the user event manager. * * @return true if the JP2 Header box was successfully reconized. */ static OPJ_BOOL opj_jp2_read_jp2h( opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t * p_manager ) { OPJ_UINT32 l_box_size=0, l_current_data_size = 0; opj_jp2_box_t box; const opj_jp2_header_handler_t * l_current_handler; OPJ_BOOL l_has_ihdr = 0; /* preconditions */ assert(p_header_data != 00); assert(jp2 != 00); assert(p_manager != 00); /* make sure the box is well placed */ if ((jp2->jp2_state & JP2_STATE_FILE_TYPE) != JP2_STATE_FILE_TYPE ) { opj_event_msg(p_manager, EVT_ERROR, "The box must be the first box in the file.\n"); return OPJ_FALSE; } jp2->jp2_img_state = JP2_IMG_STATE_NONE; /* iterate while remaining data */ while (p_header_size > 0) { if (! opj_jp2_read_boxhdr_char(&box,p_header_data,&l_box_size,p_header_size, p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Stream error while reading JP2 Header box\n"); return OPJ_FALSE; } if (box.length > p_header_size) { opj_event_msg(p_manager, EVT_ERROR, "Stream error while reading JP2 Header box: box length is inconsistent.\n"); return OPJ_FALSE; } l_current_handler = opj_jp2_img_find_handler(box.type); l_current_data_size = box.length - l_box_size; p_header_data += l_box_size; if (l_current_handler != 00) { if (! l_current_handler->handler(jp2,p_header_data,l_current_data_size,p_manager)) { return OPJ_FALSE; } } else { jp2->jp2_img_state |= JP2_IMG_STATE_UNKNOWN; } if (box.type == JP2_IHDR) { l_has_ihdr = 1; } p_header_data += l_current_data_size; p_header_size -= box.length; } if (l_has_ihdr == 0) { opj_event_msg(p_manager, EVT_ERROR, "Stream error while reading JP2 Header box: no 'ihdr' box.\n"); return OPJ_FALSE; } jp2->jp2_state |= JP2_STATE_HEADER; return OPJ_TRUE; } OPJ_BOOL opj_jp2_read_boxhdr_char( opj_jp2_box_t *box, OPJ_BYTE * p_data, OPJ_UINT32 * p_number_bytes_read, OPJ_UINT32 p_box_max_size, opj_event_mgr_t * p_manager ) { OPJ_UINT32 l_value; /* preconditions */ assert(p_data != 00); assert(box != 00); assert(p_number_bytes_read != 00); assert(p_manager != 00); if (p_box_max_size < 8) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of less than 8 bytes\n"); return OPJ_FALSE; } /* process read data */ opj_read_bytes(p_data, &l_value, 4); p_data += 4; box->length = (OPJ_UINT32)(l_value); opj_read_bytes(p_data, &l_value, 4); p_data += 4; box->type = (OPJ_UINT32)(l_value); *p_number_bytes_read = 8; /* do we have a "special very large box ?" */ /* read then the XLBox */ if (box->length == 1) { OPJ_UINT32 l_xl_part_size; if (p_box_max_size < 16) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle XL box of less than 16 bytes\n"); return OPJ_FALSE; } opj_read_bytes(p_data,&l_xl_part_size, 4); p_data += 4; *p_number_bytes_read += 4; if (l_xl_part_size != 0) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box sizes higher than 2^32\n"); return OPJ_FALSE; } opj_read_bytes(p_data, &l_value, 4); *p_number_bytes_read += 4; box->length = (OPJ_UINT32)(l_value); if (box->length == 0) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of undefined sizes\n"); return OPJ_FALSE; } } else if (box->length == 0) { opj_event_msg(p_manager, EVT_ERROR, "Cannot handle box of undefined sizes\n"); return OPJ_FALSE; } if (box->length < *p_number_bytes_read) { opj_event_msg(p_manager, EVT_ERROR, "Box length is inconsistent.\n"); return OPJ_FALSE; } return OPJ_TRUE; } OPJ_BOOL opj_jp2_read_header( opj_stream_private_t *p_stream, opj_jp2_t *jp2, opj_image_t ** p_image, opj_event_mgr_t * p_manager ) { /* preconditions */ assert(jp2 != 00); assert(p_stream != 00); assert(p_manager != 00); /* customization of the validation */ opj_jp2_setup_decoding_validation (jp2); /* customization of the encoding */ opj_jp2_setup_header_reading(jp2); /* validation of the parameters codec */ if (! opj_jp2_exec(jp2,jp2->m_validation_list,p_stream,p_manager)) { return OPJ_FALSE; } /* read header */ if (! opj_jp2_exec (jp2,jp2->m_procedure_list,p_stream,p_manager)) { return OPJ_FALSE; } return opj_j2k_read_header( p_stream, jp2->j2k, p_image, p_manager); } void opj_jp2_setup_encoding_validation (opj_jp2_t *jp2) { /* preconditions */ assert(jp2 != 00); opj_procedure_list_add_procedure(jp2->m_validation_list, (opj_procedure)opj_jp2_default_validation); /* DEVELOPER CORNER, add your custom validation procedure */ } void opj_jp2_setup_decoding_validation (opj_jp2_t *jp2) { /* preconditions */ assert(jp2 != 00); /* DEVELOPER CORNER, add your custom validation procedure */ } void opj_jp2_setup_header_writing (opj_jp2_t *jp2) { /* preconditions */ assert(jp2 != 00); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_write_jp ); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_write_ftyp ); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_write_jp2h ); if( jp2->jpip_on ) opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jpip_skip_iptr ); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_skip_jp2c ); /* DEVELOPER CORNER, insert your custom procedures */ } void opj_jp2_setup_header_reading (opj_jp2_t *jp2) { /* preconditions */ assert(jp2 != 00); opj_procedure_list_add_procedure(jp2->m_procedure_list,(opj_procedure)opj_jp2_read_header_procedure ); /* DEVELOPER CORNER, add your custom procedures */ } OPJ_BOOL opj_jp2_read_tile_header ( opj_jp2_t * p_jp2, OPJ_UINT32 * p_tile_index, OPJ_UINT32 * p_data_size, OPJ_INT32 * p_tile_x0, OPJ_INT32 * p_tile_y0, OPJ_INT32 * p_tile_x1, OPJ_INT32 * p_tile_y1, OPJ_UINT32 * p_nb_comps, OPJ_BOOL * p_go_on, opj_stream_private_t *p_stream, opj_event_mgr_t * p_manager ) { return opj_j2k_read_tile_header(p_jp2->j2k, p_tile_index, p_data_size, p_tile_x0, p_tile_y0, p_tile_x1, p_tile_y1, p_nb_comps, p_go_on, p_stream, p_manager); } OPJ_BOOL opj_jp2_write_tile ( opj_jp2_t *p_jp2, OPJ_UINT32 p_tile_index, OPJ_BYTE * p_data, OPJ_UINT32 p_data_size, opj_stream_private_t *p_stream, opj_event_mgr_t * p_manager ) { return opj_j2k_write_tile (p_jp2->j2k,p_tile_index,p_data,p_data_size,p_stream,p_manager); } OPJ_BOOL opj_jp2_decode_tile ( opj_jp2_t * p_jp2, OPJ_UINT32 p_tile_index, OPJ_BYTE * p_data, OPJ_UINT32 p_data_size, opj_stream_private_t *p_stream, opj_event_mgr_t * p_manager ) { return opj_j2k_decode_tile (p_jp2->j2k,p_tile_index,p_data,p_data_size,p_stream,p_manager); } void opj_jp2_destroy(opj_jp2_t *jp2) { if (jp2) { /* destroy the J2K codec */ opj_j2k_destroy(jp2->j2k); jp2->j2k = 00; if (jp2->comps) { opj_free(jp2->comps); jp2->comps = 00; } if (jp2->cl) { opj_free(jp2->cl); jp2->cl = 00; } if (jp2->color.icc_profile_buf) { opj_free(jp2->color.icc_profile_buf); jp2->color.icc_profile_buf = 00; } if (jp2->color.jp2_cdef) { if (jp2->color.jp2_cdef->info) { opj_free(jp2->color.jp2_cdef->info); jp2->color.jp2_cdef->info = NULL; } opj_free(jp2->color.jp2_cdef); jp2->color.jp2_cdef = 00; } if (jp2->color.jp2_pclr) { if (jp2->color.jp2_pclr->cmap) { opj_free(jp2->color.jp2_pclr->cmap); jp2->color.jp2_pclr->cmap = NULL; } if (jp2->color.jp2_pclr->channel_sign) { opj_free(jp2->color.jp2_pclr->channel_sign); jp2->color.jp2_pclr->channel_sign = NULL; } if (jp2->color.jp2_pclr->channel_size) { opj_free(jp2->color.jp2_pclr->channel_size); jp2->color.jp2_pclr->channel_size = NULL; } if (jp2->color.jp2_pclr->entries) { opj_free(jp2->color.jp2_pclr->entries); jp2->color.jp2_pclr->entries = NULL; } opj_free(jp2->color.jp2_pclr); jp2->color.jp2_pclr = 00; } if (jp2->m_validation_list) { opj_procedure_list_destroy(jp2->m_validation_list); jp2->m_validation_list = 00; } if (jp2->m_procedure_list) { opj_procedure_list_destroy(jp2->m_procedure_list); jp2->m_procedure_list = 00; } opj_free(jp2); } } OPJ_BOOL opj_jp2_set_decode_area( opj_jp2_t *p_jp2, opj_image_t* p_image, OPJ_INT32 p_start_x, OPJ_INT32 p_start_y, OPJ_INT32 p_end_x, OPJ_INT32 p_end_y, opj_event_mgr_t * p_manager ) { return opj_j2k_set_decode_area(p_jp2->j2k, p_image, p_start_x, p_start_y, p_end_x, p_end_y, p_manager); } OPJ_BOOL opj_jp2_get_tile( opj_jp2_t *p_jp2, opj_stream_private_t *p_stream, opj_image_t* p_image, opj_event_mgr_t * p_manager, OPJ_UINT32 tile_index ) { if (!p_image) return OPJ_FALSE; opj_event_msg(p_manager, EVT_WARNING, "JP2 box which are after the codestream will not be read by this function.\n"); if (! opj_j2k_get_tile(p_jp2->j2k, p_stream, p_image, p_manager, tile_index) ){ opj_event_msg(p_manager, EVT_ERROR, "Failed to decode the codestream in the JP2 file\n"); return OPJ_FALSE; } if (!opj_jp2_check_color(p_image, &(p_jp2->color), p_manager)) { return OPJ_FALSE; } /* Set Image Color Space */ if (p_jp2->enumcs == 16) p_image->color_space = OPJ_CLRSPC_SRGB; else if (p_jp2->enumcs == 17) p_image->color_space = OPJ_CLRSPC_GRAY; else if (p_jp2->enumcs == 18) p_image->color_space = OPJ_CLRSPC_SYCC; else p_image->color_space = OPJ_CLRSPC_UNKNOWN; if(p_jp2->color.jp2_pclr) { /* Part 1, I.5.3.4: Either both or none : */ if( !p_jp2->color.jp2_pclr->cmap) opj_jp2_free_pclr(&(p_jp2->color)); else opj_jp2_apply_pclr(p_image, &(p_jp2->color)); } /* Apply the color space if needed */ if(p_jp2->color.jp2_cdef) { opj_jp2_apply_cdef(p_image, &(p_jp2->color)); } if(p_jp2->color.icc_profile_buf) { p_image->icc_profile_buf = p_jp2->color.icc_profile_buf; p_image->icc_profile_len = p_jp2->color.icc_profile_len; p_jp2->color.icc_profile_buf = NULL; } return OPJ_TRUE; } /* ----------------------------------------------------------------------- */ /* JP2 encoder interface */ /* ----------------------------------------------------------------------- */ opj_jp2_t* opj_jp2_create(OPJ_BOOL p_is_decoder) { opj_jp2_t *jp2 = (opj_jp2_t*)opj_calloc(1,sizeof(opj_jp2_t)); if (jp2) { /* create the J2K codec */ if (! p_is_decoder) { jp2->j2k = opj_j2k_create_compress(); } else { jp2->j2k = opj_j2k_create_decompress(); } if (jp2->j2k == 00) { opj_jp2_destroy(jp2); return 00; } /* Color structure */ jp2->color.icc_profile_buf = NULL; jp2->color.icc_profile_len = 0; jp2->color.jp2_cdef = NULL; jp2->color.jp2_pclr = NULL; jp2->color.jp2_has_colr = 0; /* validation list creation */ jp2->m_validation_list = opj_procedure_list_create(); if (! jp2->m_validation_list) { opj_jp2_destroy(jp2); return 00; } /* execution list creation */ jp2->m_procedure_list = opj_procedure_list_create(); if (! jp2->m_procedure_list) { opj_jp2_destroy(jp2); return 00; } } return jp2; } void jp2_dump(opj_jp2_t* p_jp2, OPJ_INT32 flag, FILE* out_stream) { /* preconditions */ assert(p_jp2 != 00); j2k_dump(p_jp2->j2k, flag, out_stream); } opj_codestream_index_t* jp2_get_cstr_index(opj_jp2_t* p_jp2) { return j2k_get_cstr_index(p_jp2->j2k); } opj_codestream_info_v2_t* jp2_get_cstr_info(opj_jp2_t* p_jp2) { return j2k_get_cstr_info(p_jp2->j2k); } OPJ_BOOL opj_jp2_set_decoded_resolution_factor(opj_jp2_t *p_jp2, OPJ_UINT32 res_factor, opj_event_mgr_t * p_manager) { return opj_j2k_set_decoded_resolution_factor(p_jp2->j2k, res_factor, p_manager); } /* JPIP specific */ #ifdef USE_JPIP static OPJ_BOOL opj_jpip_write_iptr(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_OFF_T j2k_codestream_exit; OPJ_BYTE l_data_header [24]; /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); assert(opj_stream_has_seek(cio)); j2k_codestream_exit = opj_stream_tell(cio); opj_write_bytes(l_data_header, 24, 4); /* size of iptr */ opj_write_bytes(l_data_header + 4,JPIP_IPTR,4); /* IPTR */ #if 0 opj_write_bytes(l_data_header + 4 + 4, 0, 8); /* offset */ opj_write_bytes(l_data_header + 8 + 8, 0, 8); /* length */ #else opj_write_double(l_data_header + 4 + 4, 0); /* offset */ opj_write_double(l_data_header + 8 + 8, 0); /* length */ #endif if (! opj_stream_seek(cio,jp2->jpip_iptr_offset,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } if (opj_stream_write_data(cio,l_data_header,24,p_manager) != 24) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } if (! opj_stream_seek(cio,j2k_codestream_exit,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } return OPJ_TRUE; } static OPJ_BOOL opj_jpip_write_fidx(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_OFF_T j2k_codestream_exit; OPJ_BYTE l_data_header [24]; /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); assert(opj_stream_has_seek(cio)); opj_write_bytes(l_data_header, 24, 4); /* size of iptr */ opj_write_bytes(l_data_header + 4,JPIP_FIDX,4); /* IPTR */ opj_write_double(l_data_header + 4 + 4, 0); /* offset */ opj_write_double(l_data_header + 8 + 8, 0); /* length */ if (opj_stream_write_data(cio,l_data_header,24,p_manager) != 24) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } j2k_codestream_exit = opj_stream_tell(cio); if (! opj_stream_seek(cio,j2k_codestream_exit,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } return OPJ_TRUE; } static OPJ_BOOL opj_jpip_write_cidx(opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_OFF_T j2k_codestream_exit; OPJ_BYTE l_data_header [24]; /* preconditions */ assert(jp2 != 00); assert(cio != 00); assert(p_manager != 00); assert(opj_stream_has_seek(cio)); j2k_codestream_exit = opj_stream_tell(cio); opj_write_bytes(l_data_header, 24, 4); /* size of iptr */ opj_write_bytes(l_data_header + 4,JPIP_CIDX,4); /* IPTR */ #if 0 opj_write_bytes(l_data_header + 4 + 4, 0, 8); /* offset */ opj_write_bytes(l_data_header + 8 + 8, 0, 8); /* length */ #else opj_write_double(l_data_header + 4 + 4, 0); /* offset */ opj_write_double(l_data_header + 8 + 8, 0); /* length */ #endif if (! opj_stream_seek(cio,j2k_codestream_exit,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } if (opj_stream_write_data(cio,l_data_header,24,p_manager) != 24) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } j2k_codestream_exit = opj_stream_tell(cio); if (! opj_stream_seek(cio,j2k_codestream_exit,p_manager)) { opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n"); return OPJ_FALSE; } return OPJ_TRUE; } #if 0 static void write_prxy( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_BYTE l_data_header [8]; OPJ_OFF_T len, lenp; lenp = opj_stream_tell(cio); opj_stream_skip(cio, 4, p_manager); /* L [at the end] */ opj_write_bytes(l_data_header,JPIP_PRXY,4); /* IPTR */ opj_stream_write_data(cio,l_data_header,4,p_manager); opj_write_bytes( l_data_header, offset_jp2c, 8); /* OOFF */ opj_stream_write_data(cio,l_data_header,8,p_manager); opj_write_bytes( l_data_header, length_jp2c, 4); /* OBH part 1 */ opj_write_bytes( l_data_header+4, JP2_JP2C, 4); /* OBH part 2 */ opj_stream_write_data(cio,l_data_header,8,p_manager); opj_write_bytes( l_data_header, 1, 1);/* NI */ opj_stream_write_data(cio,l_data_header,1,p_manager); opj_write_bytes( l_data_header, offset_idx, 8); /* IOFF */ opj_stream_write_data(cio,l_data_header,8,p_manager); opj_write_bytes( l_data_header, length_idx, 4); /* IBH part 1 */ opj_write_bytes( l_data_header+4, JPIP_CIDX, 4); /* IBH part 2 */ opj_stream_write_data(cio,l_data_header,8,p_manager); len = opj_stream_tell(cio)-lenp; opj_stream_skip(cio, lenp, p_manager); opj_write_bytes(l_data_header,len,4);/* L */ opj_stream_write_data(cio,l_data_header,4,p_manager); opj_stream_seek(cio, lenp+len,p_manager); } #endif #if 0 static int write_fidx( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_stream_private_t *cio, opj_event_mgr_t * p_manager ) { OPJ_BYTE l_data_header [4]; OPJ_OFF_T len, lenp; lenp = opj_stream_tell(cio); opj_stream_skip(cio, 4, p_manager); opj_write_bytes(l_data_header,JPIP_FIDX,4); /* FIDX */ opj_stream_write_data(cio,l_data_header,4,p_manager); write_prxy( offset_jp2c, length_jp2c, offset_idx, length_idx, cio,p_manager); len = opj_stream_tell(cio)-lenp; opj_stream_skip(cio, lenp, p_manager); opj_write_bytes(l_data_header,len,4);/* L */ opj_stream_write_data(cio,l_data_header,4,p_manager); opj_stream_seek(cio, lenp+len,p_manager); return len; } #endif #endif /* USE_JPIP */