text: /*
   * 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
  
  #define OPJ_UNUSED(x) (void)x
  
  /** @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, false 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,
                                 opj_event_mgr_t *);
  
  /**
   * 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);
  
  static OPJ_BOOL opj_jp2_skip_jp2c(opj_jp2_t *jp2,
                                    opj_stream_private_t *stream,
                                    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 recognized.
  */
  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 file Header box - JP2 Header box (warning, this is a super box).
   *
   * @param  jp2      the jpeg2000 file codec.
   * @param  stream      the stream to write data to.
   * @param  p_manager  user event manager.
   *
   * @return true if writing was successful.
   */
  static OPJ_BOOL opj_jp2_write_jp2h(opj_jp2_t *jp2,
                                     opj_stream_private_t *stream,
                                     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 image Image.
  @param color Collector for profile, cdef and pclr data.
  @param p_manager the user event manager.
  @return true in case of success
  */
  static OPJ_BOOL opj_jp2_apply_pclr(opj_image_t *image,
                                     opj_jp2_color_t *color,
                                     opj_event_mgr_t * p_manager);
  
  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, false 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.
   * Developers wanting to extend the library can add their own writing procedures.
   */
  static OPJ_BOOL opj_jp2_setup_end_header_writing(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager);
  
  /**
   * Sets up the procedures to do on reading header after the codestream.
   * Developers wanting to extend the library can add their own writing procedures.
   */
  static OPJ_BOOL opj_jp2_setup_end_header_reading(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager);
  
  /**
   * 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);
  
  /**
   * Executes 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 recognized, 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 launch to make sure the codec parameters
   * are valid. Developers wanting to extend the library can add their own validation procedures.
   */
  static OPJ_BOOL opj_jp2_setup_encoding_validation(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager);
  
  /**
   * Sets up the procedures to do on writing header. Developers wanting to extend the library can add their own writing procedures.
   */
  static OPJ_BOOL opj_jp2_setup_header_writing(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager);
  
  static 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);
  
  static 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}
  };
  
  static 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 recognized, 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 launch to make sure the codec parameters
   * are valid. Developers wanting to extend the library can add their own validation procedures.
   */
  static OPJ_BOOL opj_jp2_setup_decoding_validation(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager);
  
  /**
   * Sets up the procedures to do on reading header.
   * Developers wanting to extend the library can add their own writing procedures.
   */
  static OPJ_BOOL opj_jp2_setup_header_reading(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager);
  
  /* ----------------------------------------------------------------------- */
  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)
  {
      /* 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);
          if (bleft > (OPJ_OFF_T)(0xFFFFFFFFU - 8U)) {
              opj_event_msg(p_manager, EVT_ERROR,
                            "Cannot handle box sizes higher than 2^32\n");
              return OPJ_FALSE;
          }
          box->length = (OPJ_UINT32)bleft + 8U;
          assert((OPJ_OFF_T)box->length == bleft + 8);
          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
  
  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)
  {
      /* preconditions */
      assert(p_image_header_data != 00);
      assert(jp2 != 00);
      assert(p_manager != 00);
  
      if (jp2->comps != NULL) {
          opj_event_msg(p_manager, EVT_WARNING,
                        "Ignoring ihdr box. First ihdr box already read\n");
          return OPJ_TRUE;
      }
  
      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;
  
      if (jp2->h < 1 || jp2->w < 1 || jp2->numcomps < 1) {
          opj_event_msg(p_manager, EVT_ERROR,
                        "Wrong values for: w(%d) h(%d) numcomps(%d) (ihdr)\n",
                        jp2->w, jp2->h, jp2->numcomps);
          return OPJ_FALSE;
      }
      if ((jp2->numcomps - 1U) >=
              16384U) { /* unsigned underflow is well defined: 1U <= jp2->numcomps <= 16384U */
          opj_event_msg(p_manager, EVT_ERROR, "Invalid number of components (ihdr)\n");
          return OPJ_FALSE;
      }
  
      /* 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;
  
      jp2->j2k->m_cp.allow_different_bit_depth_sign = (jp2->bpc == 255);
      jp2->j2k->ihdr_w = jp2->w;
      jp2->j2k->ihdr_h = jp2->h;
      jp2->has_ihdr = 1;
  
      return OPJ_TRUE;
  }
  
  static 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;
  }
  
  static 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;
      OPJ_BYTE * l_bpcc_data, * l_current_bpcc_ptr;
  
      /* preconditions */
      assert(jp2 != 00);
      assert(p_nb_bytes_written != 00);
      l_bpcc_size = 8 + jp2->numcomps;
  
      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;
  }
  
  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
                                   )
  {
      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;
  }
  
  static 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;
  }
  
  static 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 == 65535U) {
                  continue;
              }
  
              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_BOOL *) 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_BYTE mtyp = cmap[i].mtyp;
              OPJ_BYTE pcol = cmap[i].pcol;
              /* See ISO 15444-1 Table I.14 – MTYPi field values */
              if (mtyp != 0 && mtyp != 1) {
                  opj_event_msg(p_manager, EVT_ERROR,
                                "Invalid value for cmap[%d].mtyp = %d.\n", i,
                                mtyp);
                  is_sane = OPJ_FALSE;
              } else 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] && mtyp == 1) {
                  opj_event_msg(p_manager, EVT_ERROR, "Component %d is mapped twice.\n", pcol);
                  is_sane = OPJ_FALSE;
              } else if (mtyp == 0 && 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 if (mtyp == 1 && pcol != i) {
                  /* OpenJPEG implementation limitation. See assert(i == pcol); */
                  /* in opj_jp2_apply_pclr() */
                  opj_event_msg(p_manager, EVT_ERROR,
                                "Implementation limitation: for palette mapping, "
                                "pcol[%d] should be equal to %d, but is equal "
                                "to %d.\n", i, 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;
              }
          }
          /* Issue 235/447 weird cmap */
          if (1 && is_sane && (image->numcomps == 1U)) {
              for (i = 0; i < nr_channels; i++) {
                  if (!pcol_usage[i]) {
                      is_sane = 0U;
                      opj_event_msg(p_manager, EVT_WARNING,
                                    "Component mapping seems wrong. Trying to correct.\n");
                      break;
                  }
              }
              if (!is_sane) {
                  is_sane = OPJ_TRUE;
                  for (i = 0; i < nr_channels; i++) {
                      cmap[i].mtyp = 1U;
                      cmap[i].pcol = (OPJ_BYTE) i;
                  }
              }
          }
          opj_free(pcol_usage);
          if (!is_sane) {
              return OPJ_FALSE;
          }
      }
  
      return OPJ_TRUE;
  }
  
  /* file9.jp2 */
  static OPJ_BOOL opj_jp2_apply_pclr(opj_image_t *image,
                                     opj_jp2_color_t *color,
                                     opj_event_mgr_t * p_manager)
  {
      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;
  
      for (i = 0; i < nr_channels; ++i) {
          /* Palette mapping: */
          cmp = cmap[i].cmp;
          if (image->comps[cmp].data == NULL) {
              opj_event_msg(p_manager, EVT_ERROR,
                            "image->comps[%d].data == NULL in opj_jp2_apply_pclr().\n", i);
              return OPJ_FALSE;
          }
      }
  
      old_comps = image->comps;
      new_comps = (opj_image_comp_t*)
                  opj_malloc(nr_channels * sizeof(opj_image_comp_t));
      if (!new_comps) {
          opj_event_msg(p_manager, EVT_ERROR,
                        "Memory allocation failure in opj_jp2_apply_pclr().\n");
          return OPJ_FALSE;
      }
      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_image_data_alloc(sizeof(OPJ_INT32) * old_comps[cmp].w * old_comps[cmp].h);
          if (!new_comps[i].data) {
              while (i > 0) {
                  -- i;
                  opj_image_data_free(new_comps[i].data);
              }
              opj_free(new_comps);
              opj_event_msg(p_manager, EVT_ERROR,
                            "Memory allocation failure in opj_jp2_apply_pclr().\n");
              return OPJ_FALSE;
          }
          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); /* verified above */
          max = new_comps[pcol].w * new_comps[pcol].h;
  
          /* Direct use: */
          if (cmap[i].mtyp == 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 (j = 0; j < max; ++j) {
          if (old_comps[j].data) {
              opj_image_data_free(old_comps[j].data);
          }
      }
  
      opj_free(old_comps);
      image->comps = new_comps;
      image->numcomps = nr_channels;
  
      return OPJ_TRUE;
  }/* apply_pclr() */
  
  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
                                   )
  {
      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(sizeof(OPJ_UINT32) * nr_channels *
                                         nr_entries);
      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;
  }
  
  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
                                   )
  {
      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;
  }
  
  static void opj_jp2_apply_cdef(opj_image_t *image, opj_jp2_color_t *color,
                                 opj_event_mgr_t *manager)
  {
      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) {
              opj_event_msg(manager, EVT_WARNING, "opj_jp2_apply_cdef: 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) {
              opj_event_msg(manager, EVT_WARNING, "opj_jp2_apply_cdef: 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() */
  
  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
                                   )
  {
      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;
  }
  
  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
                                   )
  {
      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) &&
                  (jp2->enumcs != 14)) { /* handled below for CIELab) */
              /* 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 */
  
          p_colr_header_data += 4;
  
          if (jp2->enumcs == 14) { /* CIELab */
              OPJ_UINT32 *cielab;
              OPJ_UINT32 rl, ol, ra, oa, rb, ob, il;
  
              cielab = (OPJ_UINT32*)opj_malloc(9 * sizeof(OPJ_UINT32));
              if (cielab == NULL) {
                  opj_event_msg(p_manager, EVT_ERROR, "Not enough memory for cielab\n");
                  return OPJ_FALSE;
              }
              cielab[0] = 14; /* enumcs */
  
              /* default values */
              rl = ra = rb = ol = oa = ob = 0;
              il = 0x00443530; /* D50 */
              cielab[1] = 0x44454600;/* DEF */
  
              if (p_colr_header_size == 35) {
                  opj_read_bytes(p_colr_header_data, &rl, 4);
                  p_colr_header_data += 4;
                  opj_read_bytes(p_colr_header_data, &ol, 4);
                  p_colr_header_data += 4;
                  opj_read_bytes(p_colr_header_data, &ra, 4);
                  p_colr_header_data += 4;
                  opj_read_bytes(p_colr_header_data, &oa, 4);
                  p_colr_header_data += 4;
                  opj_read_bytes(p_colr_header_data, &rb, 4);
                  p_colr_header_data += 4;
                  opj_read_bytes(p_colr_header_data, &ob, 4);
                  p_colr_header_data += 4;
                  opj_read_bytes(p_colr_header_data, &il, 4);
                  p_colr_header_data += 4;
  
                  cielab[1] = 0;
              } else if (p_colr_header_size != 7) {
                  opj_event_msg(p_manager, EVT_WARNING,
                                "Bad COLR header box (CIELab, bad size: %d)\n", p_colr_header_size);
              }
              cielab[2] = rl;
              cielab[4] = ra;
              cielab[6] = rb;
              cielab[3] = ol;
              cielab[5] = oa;
              cielab[7] = ob;
              cielab[8] = il;
  
              jp2->color.icc_profile_buf = (OPJ_BYTE*)cielab;
              jp2->color.icc_profile_len = 0;
          }
          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->j2k->m_specific_param.m_decoder.m_numcomps_to_decode) {
          /* Bypass all JP2 component transforms */
          return OPJ_TRUE;
      }
  
      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 if (jp2->enumcs == 12) {
              p_image->color_space = OPJ_CLRSPC_CMYK;
          } 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 {
                  if (!opj_jp2_apply_pclr(p_image, &(jp2->color), p_manager)) {
                      return OPJ_FALSE;
                  }
              }
          }
  
          /* Apply the color space if needed */
          if (jp2->color.jp2_cdef) {
              opj_jp2_apply_cdef(p_image, &(jp2->color), p_manager);
          }
  
          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;
  }
  
  static 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;
  }
  
  static 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;
      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_size = 16 + 4 * jp2->numcl;
  
      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;
  }
  
  static 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;
  }
  
  static 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);
  
      OPJ_UNUSED(jp2);
  
      /* 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;
  }
  
  OPJ_BOOL opj_jp2_set_threads(opj_jp2_t *jp2, OPJ_UINT32 num_threads)
  {
      return opj_j2k_set_threads(jp2->j2k, num_threads);
  }
  
  /* ----------------------------------------------------------------------- */
  /* 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) {
          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) {
          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 */
      if (! opj_jp2_setup_end_header_reading(jp2, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* 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 */
      if (! opj_jp2_setup_end_header_writing(jp2, p_manager)) {
          return OPJ_FALSE;
      }
  
      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);
  }
  
  static OPJ_BOOL opj_jp2_setup_end_header_writing(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager)
  {
      /* preconditions */
      assert(jp2 != 00);
      assert(p_manager != 00);
  
  #ifdef USE_JPIP
      if (jp2->jpip_on) {
          if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                                 (opj_procedure)opj_jpip_write_iptr, p_manager)) {
              return OPJ_FALSE;
          }
      }
  #endif
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_write_jp2c, p_manager)) {
          return OPJ_FALSE;
      }
      /* DEVELOPER CORNER, add your custom procedures */
  #ifdef USE_JPIP
      if (jp2->jpip_on) {
          if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                                 (opj_procedure)opj_jpip_write_cidx, p_manager)) {
              return OPJ_FALSE;
          }
          if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                                 (opj_procedure)opj_jpip_write_fidx, p_manager)) {
              return OPJ_FALSE;
          }
      }
  #endif
      return OPJ_TRUE;
  }
  
  static OPJ_BOOL opj_jp2_setup_end_header_reading(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager)
  {
      /* preconditions */
      assert(jp2 != 00);
      assert(p_manager != 00);
  
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_read_header_procedure, p_manager)) {
          return OPJ_FALSE;
      }
      /* DEVELOPER CORNER, add your custom procedures */
  
      return OPJ_TRUE;
  }
  
  static 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);
  
      OPJ_UNUSED(p_manager);
  
      /* 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;
  }
  
  static 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;
      const opj_jp2_header_handler_t * l_current_handler_misplaced;
      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_handler_misplaced = opj_jp2_img_find_handler(box.type);
          l_current_data_size = box.length - l_nb_bytes_read;
  
          if ((l_current_handler != 00) || (l_current_handler_misplaced != 00)) {
              if (l_current_handler == 00) {
                  opj_event_msg(p_manager, EVT_WARNING,
                                "Found a misplaced '%c%c%c%c' box outside jp2h box\n",
                                (OPJ_BYTE)(box.type >> 24), (OPJ_BYTE)(box.type >> 16),
                                (OPJ_BYTE)(box.type >> 8), (OPJ_BYTE)(box.type >> 0));
                  if (jp2->jp2_state & JP2_STATE_HEADER) {
                      /* read anyway, we already have jp2h */
                      l_current_handler = l_current_handler_misplaced;
                  } else {
                      opj_event_msg(p_manager, EVT_WARNING,
                                    "JPEG2000 Header box not read yet, '%c%c%c%c' box will be ignored\n",
                                    (OPJ_BYTE)(box.type >> 24), (OPJ_BYTE)(box.type >> 16),
                                    (OPJ_BYTE)(box.type >> 8), (OPJ_BYTE)(box.type >> 0));
                      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;
                      }
                      continue;
                  }
              }
              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) {
                  if (jp2->jp2_state & JP2_STATE_CODESTREAM) {
                      /* If we already read the codestream, do not error out */
                      /* Needed for data/input/nonregression/issue254.jp2 */
                      opj_event_msg(p_manager, EVT_WARNING,
                                    "Problem with skipping JPEG2000 box, stream error\n");
                      opj_free(l_current_data);
                      return OPJ_TRUE;
                  } else {
                      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;
  }
  
  /**
   * Executes 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 */
      if (! opj_jp2_setup_encoding_validation(jp2, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* validation of the parameters codec */
      if (! opj_jp2_exec(jp2, jp2->m_validation_list, stream, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* customization of the encoding */
      if (! opj_jp2_setup_header_writing(jp2, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* 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);
  }
  
  static 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;
  }
  
  static 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 recognized.
  */
  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;
      jp2->has_jp2h = 1;
  
      return OPJ_TRUE;
  }
  
  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
                                          )
  {
      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 */
      if (! opj_jp2_setup_decoding_validation(jp2, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* customization of the encoding */
      if (! opj_jp2_setup_header_reading(jp2, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* 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;
      }
      if (jp2->has_jp2h == 0) {
          opj_event_msg(p_manager, EVT_ERROR, "JP2H box missing. Required.\n");
          return OPJ_FALSE;
      }
      if (jp2->has_ihdr == 0) {
          opj_event_msg(p_manager, EVT_ERROR, "IHDR box_missing. Required.\n");
          return OPJ_FALSE;
      }
  
      return opj_j2k_read_header(p_stream,
                                 jp2->j2k,
                                 p_image,
                                 p_manager);
  }
  
  static OPJ_BOOL opj_jp2_setup_encoding_validation(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager)
  {
      /* preconditions */
      assert(jp2 != 00);
      assert(p_manager != 00);
  
      if (! opj_procedure_list_add_procedure(jp2->m_validation_list,
                                             (opj_procedure)opj_jp2_default_validation, p_manager)) {
          return OPJ_FALSE;
      }
      /* DEVELOPER CORNER, add your custom validation procedure */
  
      return OPJ_TRUE;
  }
  
  static OPJ_BOOL opj_jp2_setup_decoding_validation(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager)
  {
      /* preconditions */
      assert(jp2 != 00);
      assert(p_manager != 00);
  
      OPJ_UNUSED(jp2);
      OPJ_UNUSED(p_manager);
  
      /* DEVELOPER CORNER, add your custom validation procedure */
  
      return OPJ_TRUE;
  }
  
  static OPJ_BOOL opj_jp2_setup_header_writing(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager)
  {
      /* preconditions */
      assert(jp2 != 00);
      assert(p_manager != 00);
  
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_write_jp, p_manager)) {
          return OPJ_FALSE;
      }
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_write_ftyp, p_manager)) {
          return OPJ_FALSE;
      }
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_write_jp2h, p_manager)) {
          return OPJ_FALSE;
      }
      if (jp2->jpip_on) {
          if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                                 (opj_procedure)opj_jpip_skip_iptr, p_manager)) {
              return OPJ_FALSE;
          }
      }
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_skip_jp2c, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* DEVELOPER CORNER, insert your custom procedures */
  
      return OPJ_TRUE;
  }
  
  static OPJ_BOOL opj_jp2_setup_header_reading(opj_jp2_t *jp2,
          opj_event_mgr_t * p_manager)
  {
      /* preconditions */
      assert(jp2 != 00);
      assert(p_manager != 00);
  
      if (! opj_procedure_list_add_procedure(jp2->m_procedure_list,
                                             (opj_procedure)opj_jp2_read_header_procedure, p_manager)) {
          return OPJ_FALSE;
      }
  
      /* DEVELOPER CORNER, add your custom procedures */
  
      return OPJ_TRUE;
  }
  
  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_decoded_components(opj_jp2_t *p_jp2,
                                          OPJ_UINT32 numcomps,
                                          const OPJ_UINT32* comps_indices,
                                          opj_event_mgr_t * p_manager)
  {
      return opj_j2k_set_decoded_components(p_jp2->j2k,
                                            numcomps, comps_indices,
                                            p_manager);
  }
  
  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 (p_jp2->j2k->m_specific_param.m_decoder.m_numcomps_to_decode) {
          /* Bypass all JP2 component transforms */
          return OPJ_TRUE;
      }
  
      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 if (p_jp2->enumcs == 24) {
          p_image->color_space = OPJ_CLRSPC_EYCC;
      } else if (p_jp2->enumcs == 12) {
          p_image->color_space = OPJ_CLRSPC_CMYK;
      } 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 {
              if (!opj_jp2_apply_pclr(p_image, &(p_jp2->color), p_manager)) {
                  return OPJ_FALSE;
              }
          }
      }
  
      /* Apply the color space if needed */
      if (p_jp2->color.jp2_cdef) {
          opj_jp2_apply_cdef(p_image, &(p_jp2->color), p_manager);
      }
  
      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);
  }
  
  /* ----------------------------------------------------------------------- */
  
  OPJ_BOOL opj_jp2_encoder_set_extra_options(
      opj_jp2_t *p_jp2,
      const char* const* p_options,
      opj_event_mgr_t * p_manager)
  {
      return opj_j2k_encoder_set_extra_options(p_jp2->j2k, p_options, 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];
  
      OPJ_UNUSED(jp2);
  
      /* 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];
  
      OPJ_UNUSED(jp2);
  
      /* 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 */
  