/*
 * $Id: phix_manager.c 897 2011-08-28 21:43:57Z Kaori.Hagihara@gmail.com $
 *
 * 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"


/* 
 * Write faix box of phix
 *
 * @param[in] coff      offset of j2k codestream
 * @param[in] compno    component number
 * @param[in] cstr_info codestream information
 * @param[in] EPHused   true if if EPH option used
 * @param[in] j2klen    length of j2k codestream
 * @param[in] cio       file output handle
 * @return              length of faix box
 */

int opj_write_phix( int coff, opj_codestream_info_t cstr_info, OPJ_BOOL EPHused, int j2klen, opj_stream_private_t *cio,
              opj_event_mgr_t * p_manager )
{
  OPJ_BYTE l_data_header [8];
  int len, compno, i;
  opj_jp2_box_t *box;
  OPJ_OFF_T lenp = 0;

  box = (opj_jp2_box_t *)opj_calloc( cstr_info.numcomps, sizeof(opj_jp2_box_t));
  
  for( i=0;i<2;i++){
    if (i)
      opj_stream_seek( cio, lenp, p_manager);
      
    lenp = opj_stream_tell(cio);
    opj_stream_skip(cio, 4, p_manager);         /* L [at the end]      */
    opj_write_bytes(l_data_header,JPIP_PHIX,4); /* PHIX */
    opj_stream_write_data(cio,l_data_header,4,p_manager);
      
    opj_write_manf( i, cstr_info.numcomps, box, cio, p_manager );

    for( compno=0; compno<cstr_info.numcomps; compno++){       
      box[compno].length = opj_write_phixfaix( coff, compno, cstr_info, EPHused, j2klen, cio,p_manager);
      box[compno].type = JPIP_FAIX;
    }

    len = (OPJ_UINT32)(opj_stream_tell(cio)-lenp);
    opj_stream_seek(cio, 4, 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);
  }

  opj_free(box);

  return len;
}


int opj_write_phixfaix( int coff, int compno, opj_codestream_info_t cstr_info, OPJ_BOOL EPHused, int j2klen, opj_stream_private_t *cio,
              opj_event_mgr_t * p_manager )
{
  int tileno, version, i, nmax, size_of_coding; /* 4 or 8 */
  opj_tile_info_t *tile_Idx;
  opj_packet_info_t packet;
  int resno, precno, layno, num_packet;
  int numOfres, numOfprec, numOflayers;
  OPJ_BYTE l_data_header [8];
  OPJ_OFF_T lenp;
  OPJ_UINT32 len;

  packet.end_ph_pos = packet.start_pos = -1;
  (void)EPHused; /* unused ? */


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

  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);

  nmax = 0;
  for( i=0; i<=cstr_info.numdecompos[compno]; i++)
    nmax += cstr_info.tile[0].ph[i] * cstr_info.tile[0].pw[i] * cstr_info.numlayers;
  
  opj_write_bytes(l_data_header,nmax,size_of_coding);         /* NMAX           */
  opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);
  opj_write_bytes(l_data_header,cstr_info.tw*cstr_info.th,size_of_coding);  /* M              */
  opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);
  
  for( tileno=0; tileno<cstr_info.tw*cstr_info.th; tileno++){
    tile_Idx = &cstr_info.tile[ tileno];
    
    num_packet = 0;
    numOfres = cstr_info.numdecompos[compno] + 1;

    for( resno=0; resno<numOfres ; resno++){
      numOfprec = tile_Idx->pw[resno]*tile_Idx->ph[resno];
      for( precno=0; precno<numOfprec; precno++){
	numOflayers = cstr_info.numlayers;
	for( layno=0; layno<numOflayers; layno++){
	  
	  switch ( cstr_info.prog){
	  case OPJ_LRCP:
	    packet = tile_Idx->packet[ ((layno*numOfres+resno)*cstr_info.numcomps+compno)*numOfprec+precno];
	    break;
	  case OPJ_RLCP:
	    packet = tile_Idx->packet[ ((resno*numOflayers+layno)*cstr_info.numcomps+compno)*numOfprec+precno];
	    break;
	  case OPJ_RPCL:
	    packet = tile_Idx->packet[ ((resno*numOfprec+precno)*cstr_info.numcomps+compno)*numOflayers+layno];
	    break;
	  case OPJ_PCRL:
	    packet = tile_Idx->packet[ ((precno*cstr_info.numcomps+compno)*numOfres+resno)*numOflayers + layno];
	    break;
	  case OPJ_CPRL:
	    packet = tile_Idx->packet[ ((compno*numOfprec+precno)*numOfres+resno)*numOflayers + layno];
	    break;
	  default:
	    fprintf( stderr, "failed to ppix indexing\n");
	  }

    opj_write_bytes(l_data_header,(OPJ_UINT32)(packet.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)(packet.end_ph_pos-packet.start_pos+1),size_of_coding); /* length         */
    opj_stream_write_data(cio,l_data_header,size_of_coding,p_manager);
	  
	  num_packet++;
	}
      }
    }

    /* PADDING */
    while( num_packet < nmax){
      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);
      num_packet++;
    }
  }

  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 len;
}
