292 lines
9.0 KiB
C
292 lines
9.0 KiB
C
/*
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* $Id$
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*
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* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2011, Professor Benoit Macq
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* Copyright (c) 2010-2011, Kaori Hagihara
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* Copyright (c) 2011, Lucian Corlaciu, GSoC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include "j2kheader_manager.h"
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#ifdef SERVER
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#include "fcgi_stdio.h"
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#define logstream FCGI_stdout
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#else
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#define FCGI_stdout stdout
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#define FCGI_stderr stderr
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#define logstream stderr
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#endif //SERVER
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SIZmarker_param_t get_SIZmkrdata_from_j2kstream( Byte_t *SIZstream);
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CODmarker_param_t get_CODmkrdata_from_j2kstream( Byte_t *CODstream);
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bool get_mainheader_from_j2kstream( Byte_t *j2kstream, SIZmarker_param_t *SIZ, CODmarker_param_t *COD)
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{
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if( *j2kstream++ != 0xff || *j2kstream++ != 0x4f){
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fprintf( FCGI_stderr, "Error, j2kstream is not starting with SOC marker\n");
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return false;
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}
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if( SIZ){
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*SIZ = get_SIZmkrdata_from_j2kstream( j2kstream);
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if( SIZ->Lsiz == 0)
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return false;
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j2kstream += (SIZ->Lsiz+2);
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}
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if( COD){
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if( !SIZ)
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j2kstream += (big2( j2kstream+2) + 2);
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*COD = get_CODmkrdata_from_j2kstream( j2kstream);
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if( COD->Lcod == 0)
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return false;
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}
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return true;
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}
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SIZmarker_param_t get_SIZmkrdata_from_j2kstream( Byte_t *SIZstream)
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{
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SIZmarker_param_t SIZ ={0};
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int i;
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if( *SIZstream++ != 0xff || *SIZstream++ != 0x51){
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fprintf( FCGI_stderr, "Error, SIZ marker not found in the reconstructed j2kstream\n");
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return SIZ;
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}
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SIZ.Lsiz = big2( SIZstream);
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SIZ.Rsiz = big2( SIZstream+2);
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SIZ.Xsiz = big4( SIZstream+4);
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SIZ.Ysiz = big4( SIZstream+8);
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SIZ.XOsiz = big4( SIZstream+12);
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SIZ.YOsiz = big4( SIZstream+16);
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SIZ.XTsiz = big4( SIZstream+20);
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SIZ.YTsiz = big4( SIZstream+24);
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SIZ.XTOsiz = big4( SIZstream+28);
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SIZ.YTOsiz = big4( SIZstream+32);
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SIZ.Csiz = big2( SIZstream+36);
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SIZ.XTnum = ( SIZ.Xsiz-SIZ.XTOsiz+SIZ.XTsiz-1)/SIZ.XTsiz;
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SIZ.YTnum = ( SIZ.Ysiz-SIZ.YTOsiz+SIZ.YTsiz-1)/SIZ.YTsiz;
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for( i=0; i<(int)SIZ.Csiz; i++){
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SIZ.Ssiz[i] = *(SIZstream+(38+i*3));
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SIZ.XRsiz[i] = *(SIZstream+(39+i*3));
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SIZ.YRsiz[i] = *(SIZstream+(40+i*3));
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}
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return SIZ;
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}
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CODmarker_param_t get_CODmkrdata_from_j2kstream( Byte_t *CODstream)
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{
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CODmarker_param_t COD;
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int i;
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if( *CODstream++ != 0xff || *CODstream++ != 0x52){
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fprintf( FCGI_stderr, "Error, COD marker not found in the reconstructed j2kstream\n");
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return COD;
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}
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COD.Lcod = big2( CODstream);
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COD.Scod = *( CODstream+2);
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COD.prog_order = *( CODstream+3);
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COD.numOflayers = big2( CODstream+4);
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COD.numOfdecomp = *( CODstream+7);
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if(COD.Scod & 0x01){
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COD.XPsiz = (Byte4_t *)malloc( (COD.numOfdecomp+1)*sizeof(Byte4_t));
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COD.YPsiz = (Byte4_t *)malloc( (COD.numOfdecomp+1)*sizeof(Byte4_t));
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for( i=0; i<=COD.numOfdecomp; i++){
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//precinct size
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COD.XPsiz[i] = pow( 2, *( CODstream+12+i) & 0x0F);
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COD.YPsiz[i] = pow( 2, (*( CODstream+12+i) & 0xF0) >> 4);
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}
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}
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else{
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COD.XPsiz = (Byte4_t *)malloc( sizeof(Byte4_t));
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COD.YPsiz = (Byte4_t *)malloc( sizeof(Byte4_t));
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COD.XPsiz[0] = COD.YPsiz[0] = pow(2,15);
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}
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return COD;
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}
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bool modify_SIZmkrstream( SIZmarker_param_t SIZ, int difOfdecomplev, Byte_t *SIZstream);
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Byte2_t modify_CODmkrstream( CODmarker_param_t COD, int numOfdecomp, Byte_t *CODstream);
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bool modify_mainheader( Byte_t *j2kstream, int numOfdecomp, SIZmarker_param_t SIZ, CODmarker_param_t COD, Byte8_t *j2klen)
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{
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Byte2_t newLcod;
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if( *j2kstream++ != 0xff || *j2kstream++ != 0x4f){
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fprintf( FCGI_stderr, "Error, j2kstream is not starting with SOC marker\n");
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return false;
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}
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if(!modify_SIZmkrstream( SIZ, COD.numOfdecomp-numOfdecomp, j2kstream))
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return false;
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j2kstream += SIZ.Lsiz+2;
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if( !(newLcod = modify_CODmkrstream( COD, numOfdecomp, j2kstream)))
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return false;
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memmove( j2kstream+2+newLcod, j2kstream+2+COD.Lcod, (*j2klen)-(SIZ.Lsiz+COD.Lcod+6));
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*j2klen -= ( COD.Lcod - newLcod);
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return true;
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}
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bool modify_SIZmkrstream( SIZmarker_param_t SIZ, int difOfdecomplev, Byte_t *SIZstream)
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{
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int i;
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if( *SIZstream++ != 0xff || *SIZstream++ != 0x51){
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fprintf( FCGI_stderr, "Error, SIZ marker not found in the reconstructed j2kstream\n");
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return false;
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}
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for( i=0; i<difOfdecomplev; i++){
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SIZ.Xsiz = ceil( (double)SIZ.Xsiz/2.0);
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SIZ.Ysiz = ceil( (double)SIZ.Ysiz/2.0);
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SIZ.XOsiz = ceil( (double)SIZ.XOsiz/2.0);
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SIZ.YOsiz = ceil( (double)SIZ.YOsiz/2.0);
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SIZ.XTsiz = ceil( (double)SIZ.XTsiz/2.0);
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SIZ.YTsiz = ceil( (double)SIZ.YTsiz/2.0);
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SIZ.XTOsiz = ceil( (double)SIZ.XTOsiz/2.0);
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SIZ.YTOsiz = ceil( (double)SIZ.YTOsiz/2.0);
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}
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SIZstream += 4; // skip Lsiz + Rsiz
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modify_4Bytecode( SIZ.Xsiz, SIZstream);
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modify_4Bytecode( SIZ.Ysiz, SIZstream+4);
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modify_4Bytecode( SIZ.XOsiz, SIZstream+8);
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modify_4Bytecode( SIZ.YOsiz, SIZstream+12);
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modify_4Bytecode( SIZ.XTsiz, SIZstream+16);
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modify_4Bytecode( SIZ.YTsiz, SIZstream+20);
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modify_4Bytecode( SIZ.XTOsiz, SIZstream+24);
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modify_4Bytecode( SIZ.YTOsiz, SIZstream+28);
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return true;
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}
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Byte2_t modify_CODmkrstream( CODmarker_param_t COD, int numOfdecomp, Byte_t *CODstream)
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{
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Byte2_t newLcod;
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if( *CODstream++ != 0xff || *CODstream++ != 0x52){
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fprintf( FCGI_stderr, "Error, COD marker not found in the reconstructed j2kstream\n");
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return 0;
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}
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if( COD.Scod & 0x01){
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newLcod = 13+numOfdecomp;
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*CODstream++ = (Byte_t)((Byte2_t)(newLcod & 0xff00) >> 8);
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*CODstream++ = (Byte_t)(newLcod & 0x00ff);
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}
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else{
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newLcod = COD.Lcod;
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CODstream += 2;
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}
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CODstream += 5; // skip Scod & SGcod
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// SPcod
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*CODstream++ = (Byte_t) numOfdecomp;
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return newLcod;
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}
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bool modify_COCmkrstream( int numOfdecomp, Byte_t *COCstream, Byte2_t Csiz, Byte2_t *oldLcoc, Byte2_t *newLcoc);
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bool modify_tileheader( Byte_t *j2kstream, Byte8_t SOToffset, int numOfdecomp, Byte2_t Csiz, Byte8_t *j2klen)
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{
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Byte4_t Psot; // tile part length ref A.4.2 Start of tile-part SOT
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Byte_t *thstream, *SOTstream, *Psot_stream;
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Byte2_t oldLcoc, newLcoc;
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SOTstream = thstream = j2kstream+SOToffset;
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if( *SOTstream++ != 0xff || *SOTstream++ != 0x90){
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fprintf( FCGI_stderr, "Error, thstream is not starting with SOT marker\n");
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return false;
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}
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SOTstream += 4; // skip Lsot & Isot
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Psot = (SOTstream[0]<<24)+(SOTstream[1]<<16)+(SOTstream[2]<<8)+(SOTstream[3]);
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Psot_stream = SOTstream;
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thstream += 12; // move to next marker (SOT always 12bytes)
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while( !( *thstream == 0xff && *(thstream+1) == 0x93)){ // search SOD
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if( numOfdecomp != -1 && *thstream == 0xff && *(thstream+1) == 0x53){ // COC
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if( !modify_COCmkrstream( numOfdecomp, thstream, Csiz, &oldLcoc, &newLcoc))
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return false;
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memmove( thstream+newLcoc+2, thstream+oldLcoc+2, (*j2klen)-(thstream-j2kstream+oldLcoc+2));
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*j2klen -= ( oldLcoc - newLcoc);
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}
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thstream += 2;
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thstream += ((thstream[0]<<8)+(thstream[1])); // marker length
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}
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if( (*j2klen)-SOToffset != Psot){
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Psot = (*j2klen)-SOToffset;
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modify_4Bytecode( Psot, Psot_stream);
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}
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return true;
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}
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bool modify_COCmkrstream( int numOfdecomp, Byte_t *COCstream, Byte2_t Csiz, Byte2_t *oldLcoc, Byte2_t *newLcoc)
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{
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if( *COCstream++ != 0xff || *COCstream++ != 0x53){
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fprintf( FCGI_stderr, "Error, COC marker not found in the reconstructed j2kstream\n");
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return false;
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}
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*oldLcoc = big2( COCstream);
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*newLcoc = (Csiz < 257 ? 10 : 11) + numOfdecomp;
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*COCstream++ = (Byte_t)((Byte2_t)((*newLcoc) & 0xff00) >> 8);
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*COCstream++ = (Byte_t)((*newLcoc) & 0x00ff);
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if( Csiz < 257) COCstream +=2; // skip Ccoc & Scoc
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else COCstream += 3;
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*COCstream = numOfdecomp;
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return true;
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}
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