302 lines
6.5 KiB
C
302 lines
6.5 KiB
C
/*
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* Copyright (c) 2003-2004, Yannick Verschueren
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* Copyright (c) 2003-2004, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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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 "j2k.h"
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#include "cio.h"
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#include "tcd.h"
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#include "int.h"
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#define JPIP_JPIP 0x6a706970
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#define JP2_JP 0x6a502020
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#define JP2_FTYP 0x66747970
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#define JP2_JP2H 0x6a703268
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#define JP2_IHDR 0x69686472
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#define JP2_COLR 0x636f6c72
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#define JP2_JP2C 0x6a703263
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#define JP2_URL 0x75726c20
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#define JP2_DBTL 0x6474626c
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#define JP2_BPCC 0x62706363
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#define JP2 0x6a703220
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void jp2_write_url(char *Idx_file)
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{
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int len, lenp, i;
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char str[256];
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sprintf(str, "%s", Idx_file);
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_URL, 4); // DBTL
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cio_write(0,1); // VERS
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cio_write(0,3); // FLAG
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for (i=0; i<strlen(str); i++) {
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cio_write(str[i], 1);
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}
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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}
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void jp2_write_dbtl(char *Idx_file)
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{
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int len, lenp;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_DBTL, 4); // DBTL
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cio_write(1,2); // NDR : Only 1
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jp2_write_url(Idx_file); // URL Box
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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}
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int jp2_write_ihdr(j2k_image_t *j2k_img)
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{
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int len, lenp,i;
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int depth_0,depth, sign, BPC_ok=1;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_IHDR, 4); // IHDR
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cio_write(j2k_img->y1-j2k_img->x0,4); // HEIGHT
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cio_write(j2k_img->x1-j2k_img->x0,4); // WIDTH
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cio_write(j2k_img->numcomps,2); // NC
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depth_0=j2k_img->comps[0].prec-1;
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sign=j2k_img->comps[0].sgnd;
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for(i=1;i<j2k_img->numcomps;i++)
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{
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depth=j2k_img->comps[i].prec-1;
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sign=j2k_img->comps[i].sgnd;
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if(depth_0!=depth) BPC_ok=0;
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}
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if (BPC_ok)
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cio_write(depth_0+(sign<<7),1);
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else
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cio_write(255,1);
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cio_write(7,1); // C : Always 7
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cio_write(1,1); // UnkC, colorspace unknow
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cio_write(0,1); // IPR, no intellectual property
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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return BPC_ok;
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}
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void jp2_write_bpcc(j2k_image_t *j2k_img)
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{
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int len, lenp, i;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_BPCC, 4); // BPCC
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for(i=0;i<j2k_img->numcomps;i++)
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cio_write(j2k_img->comps[i].prec-1+(j2k_img->comps[i].sgnd<<7),1);
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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}
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void jp2_write_colr(int BPC_ok, j2k_image_t *j2k_img)
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{
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int len, lenp, meth;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_COLR, 4); // COLR
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if ((j2k_img->numcomps==1 || j2k_img->numcomps==3) && (BPC_ok && j2k_img->comps[0].prec==8))
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meth=1;
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else
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meth=2;
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cio_write(meth,1); // METH
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cio_write(0,1); // PREC
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cio_write(0,1); // APPROX
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if (meth==1)
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cio_write(j2k_img->numcomps>1?16:17,4); // EnumCS
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if (meth==2)
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cio_write(0,1); // PROFILE (??)
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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}
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/*
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* Write the JP2H box
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*
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* JP2 Header box
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*
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*/
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void jp2_write_jp2h(j2k_image_t *j2k_img)
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{
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int len, lenp, BPC_ok;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_JP2H, 4); /* JP2H */
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BPC_ok=jp2_write_ihdr(j2k_img);
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if (!BPC_ok)
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jp2_write_bpcc(j2k_img);
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jp2_write_colr(BPC_ok, j2k_img);
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); /* L */
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cio_seek(lenp+len);
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}
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/*
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* Write the FTYP box
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*
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* File type box
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*
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*/
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void jp2_write_ftyp()
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{
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int len, lenp;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_FTYP, 4); /* FTYP */
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cio_write(JP2,4); /* BR */
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cio_write(0,4); /* MinV */
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cio_write(JP2,4); /* CL0 : JP2 */
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cio_write(JPIP_JPIP,4); /* CL1 : JPIP */
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); /* L */
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cio_seek(lenp+len);
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}
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/*
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* Read the FTYP box
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*
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* File type box
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*
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*/
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void jp2_read_ftyp(int length)
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{
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int BR, MinV, type, i;
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BR = cio_read(4); /* BR */
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MinV = cio_read(4); /* MinV */
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length-=8;
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for (i=length/4;i>0;i--)
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type = cio_read(4); /* CLi : JP2, JPIP */
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}
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int jp2_write_jp2c(char *J2K_file)
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{
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int len, lenp, totlen, i;
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FILE *src;
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char *j2kfile;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_JP2C, 4); // JP2C
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src=fopen(J2K_file, "rb");
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fseek(src, 0, SEEK_END);
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totlen=ftell(src);
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fseek(src, 0, SEEK_SET);
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j2kfile=(char*)malloc(totlen);
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fread(j2kfile, 1, totlen, src);
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fclose(src);
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for (i=0;i<totlen;i++)
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cio_write(j2kfile[i],1);
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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return lenp;
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}
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void jp2_write_jp()
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{
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int len, lenp;
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lenp=cio_tell();
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cio_skip(4);
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cio_write(JP2_JP, 4); // JP
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cio_write(0x0d0a870a,4);
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len=cio_tell()-lenp;
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cio_seek(lenp);
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cio_write(len,4); // L
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cio_seek(lenp+len);
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}
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/*
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* Read the JP box
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*
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* JPEG 2000 signature
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*
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* return 1 if error else 0
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*/
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int jp2_read_jp()
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{
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if (0x0d0a870a!=cio_read(4))
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return 1;
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else
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return 0;
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}
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