/*
 * $Id: tpix_manager.c,v 1.4 2014/03/16 12:29:52 drolon Exp $
 *
 * Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2011, Professor Benoit Macq
 * Copyright (c) 2003-2004, Yannick Verschueren
 * Copyright (c) 2010-2011, Kaori Hagihara
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*! \file
 *  \brief Modification of jpip.c from 2KAN indexer
 */

#include "opj_includes.h"

#define MAX(a,b) ((a)>(b)?(a):(b))

/* 
 * Get number of maximum tile parts per tile
 *
 * @param[in] cstr_info codestream information
 * @return              number of maximum tile parts per tile
 */
int get_num_max_tile_parts( opj_codestream_info_t cstr_info);


/* 
 * Write faix box of tpix
 *
 * @param[in] coff offset of j2k codestream
 * @param[in] compno    component number
 * @param[in] cstr_info codestream information
 * @param[in] j2klen    length of j2k codestream
 * @param[in] cio       file output handle
 * @return              length of faix box
 */

int opj_write_tpix( int coff, 
                    opj_codestream_info_t cstr_info, 
                    int j2klen, opj_stream_private_t *cio,
                    opj_event_mgr_t * p_manager )
{
  OPJ_BYTE l_data_header [4];
  OPJ_UINT32 len;
  OPJ_OFF_T lenp;

  lenp = opj_stream_tell(cio);
  opj_stream_skip(cio, 4, p_manager);
  opj_write_bytes(l_data_header,JPIP_TPIX,4); /* TPIX */
  opj_stream_write_data(cio,l_data_header,4,p_manager);
  
  opj_write_tpixfaix( coff, 0, cstr_info, j2klen, cio,p_manager);

  len = (OPJ_UINT32)(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 (int)len;
}

int opj_write_tpixfaix( int coff,
                        int compno, 
                        opj_codestream_info_t cstr_info, 
                        int j2klen, 
                        opj_stream_private_t *cio,
                        opj_event_mgr_t * p_manager )
{
  OPJ_UINT32 len;
  OPJ_OFF_T lenp;
  OPJ_UINT32 i, j;
  OPJ_UINT32 Aux;
  OPJ_UINT32 num_max_tile_parts;
  OPJ_UINT32 size_of_coding; /* 4 or 8 */
  opj_tp_info_t tp;
  OPJ_BYTE l_data_header [8];
  OPJ_UINT32 version;

  num_max_tile_parts = (OPJ_UINT32)get_num_max_tile_parts( cstr_info);

  if( j2klen > pow( 2, 32)){
    size_of_coding =  8;
    version = num_max_tile_parts == 1 ? 1:3;
  }
  else{
    size_of_coding = 4;
    version = num_max_tile_parts == 1 ? 0:2;
  }

  lenp = opj_stream_tell(cio);
  opj_stream_skip(cio, 4, p_manager);         /* L [at the end]      */
  opj_write_bytes(l_data_header,JPIP_FAIX,4); /* FAIX */
  opj_stream_write_data(cio,l_data_header,4,p_manager);
  opj_write_bytes(l_data_header,version,1);   /* Version 0 = 4 bytes */
  opj_stream_write_data(cio,l_data_header,1,p_manager);

  opj_write_bytes(l_data_header,num_max_tile_parts,size_of_coding);         /* NMAX           */
  opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);
  opj_write_bytes(l_data_header,(OPJ_UINT32)(cstr_info.tw*cstr_info.th),size_of_coding);  /* M              */
  opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);

  for (i = 0; i < (OPJ_UINT32)(cstr_info.tw*cstr_info.th); i++)
    {
    for (j = 0; j < (OPJ_UINT32)cstr_info.tile[i].num_tps; j++)
      {
      tp = cstr_info.tile[i].tp[j];

      opj_write_bytes(l_data_header,(OPJ_UINT32)(tp.tp_start_pos-coff),size_of_coding);            /* start position */
      opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);
      opj_write_bytes(l_data_header,(OPJ_UINT32)(tp.tp_end_pos-tp.tp_start_pos+1),size_of_coding); /* length         */
      opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);

      if (version & 0x02)
        {
        if( cstr_info.tile[i].num_tps == 1 && cstr_info.numdecompos[compno] > 1)
          Aux = (OPJ_UINT32)(cstr_info.numdecompos[compno] + 1);
        else
          Aux = j + 1;

        opj_write_bytes(l_data_header,Aux,4);
        opj_stream_write_data(cio,l_data_header,4,p_manager);

        /*cio_write(img.tile[i].tile_parts[j].num_reso_AUX,4);*/ /* Aux_i,j : Auxiliary value */
        /* fprintf(stderr,"AUX value %d\n",Aux);*/
        }
      /*cio_write(0,4);*/
      }
    /* PADDING */
    while (j < num_max_tile_parts)
      {

          opj_write_bytes(l_data_header,0,size_of_coding);/* start position            */
      opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);
      opj_write_bytes(l_data_header,0,size_of_coding);/* length                    */
      opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);

      if (version & 0x02)
      opj_write_bytes(l_data_header,0,4);      /* Aux_i,j : Auxiliary value */
      opj_stream_write_data(cio,l_data_header,4,p_manager);
      j++;
      }
    }
  
  len = (OPJ_UINT32)(opj_stream_tell(cio)-lenp);
  opj_stream_seek(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 (int)len;
}

int get_num_max_tile_parts( opj_codestream_info_t cstr_info)
{
  int num_max_tp = 0, i;

  for( i=0; i<cstr_info.tw*cstr_info.th; i++)
    num_max_tp = MAX( cstr_info.tile[i].num_tps, num_max_tp);
  
  return num_max_tp;
}
