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/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
Copyright (c) 2005 Dmitry Baryshev <ksquirrel@tut.by>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation;
either version 2 of the License, or (at your option) any later
version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <iostream>
#include <sstream>
#include <stdio.h>
#include <string.h>
#include "ksquirrel-libs/fmt_types.h"
#include "ksquirrel-libs/fileio.h"
#include "ksquirrel-libs/fmt_utils.h"
#include "fmt_codec_sct_defs.h"
#include "fmt_codec_sct.h"
#include "ksquirrel-libs/error.h"
#include "../xpm/codec_sct.xpm"
fmt_codec::fmt_codec() : fmt_codec_base()
{}
fmt_codec::~fmt_codec()
{}
void fmt_codec::options(codec_options *o)
{
o->version = "0.2.2";
o->name = "Scitex CT";
o->filter = "*.sct *.ct ";
o->config = "";
o->mime = "";
o->mimetype = "image/x-sct";
o->pixmap = codec_sct;
o->readable = true;
o->canbemultiple = false;
o->writestatic = false;
o->writeanimated = false;
o->needtempfile = false;
}
s32 fmt_codec::read_init(const std::string &file)
{
frs.open(file.c_str(), ios::binary | ios::in);
if(!frs.good())
return SQE_R_NOFILE;
currentImage = -1;
read_error = false;
finfo.animated = false;
return SQE_OK;
}
s32 fmt_codec::read_next()
{
currentImage++;
if(currentImage)
return SQE_NOTOK;
fmt_image image;
s8 comment[0x50 + 1], sig[2];
if(!frs.readK(comment, sizeof(comment) - 1)) return SQE_R_BADFILE;
if(!frs.readK(sig, sizeof(sig))) return SQE_R_BADFILE;
comment[0x50] = '\0';
frs.seekg(0x400, ios::beg);
if(!frs.readK(&sct, sizeof(sct_header))) return SQE_R_BADFILE;
sct.format = fmt_utils::konvertWord(sct.format);
if(sct.format != SCT_FORMAT_RGB && sct.format != SCT_FORMAT_GRAY && sct.format != SCT_FORMAT_CMYK)
return SQE_R_BADFILE;
if(sct.format == SCT_FORMAT_RGB && sct.channels != 3)
return SQE_R_BADFILE;
if(sct.format == SCT_FORMAT_GRAY && sct.channels != 1)
return SQE_R_BADFILE;
if(sct.format == SCT_FORMAT_CMYK && sct.channels != 4)
return SQE_R_BADFILE;
if((sct.width[0] != '+' && sct.width[0] != '-') || (sct.height[0] != '+' && sct.height[0] != '-'))
return SQE_R_BADFILE;
std::string buf;
buf.assign(sct.width, sizeof(sct.width));
std::stringstream ss(buf);
ss.setf(ios::hex);
ss >> image.h;
buf.assign(sct.height, sizeof(sct.height));
std::stringstream ss1(buf);
ss1.setf(ios::hex);
ss1 >> image.w;
image.compression = "-";
switch(sct.format)
{
case SCT_FORMAT_RGB:
image.colorspace = "RGB";
image.bpp = 24;
break;
case SCT_FORMAT_GRAY:
image.colorspace = "Grayscale";
image.bpp = 8;
break;
case SCT_FORMAT_CMYK:
image.colorspace = "CMYK";
image.bpp = 32;
break;
}
fmt_metaentry mt;
mt.group = "Comment";
mt.data = comment;
addmeta(mt);
finfo.image.push_back(image);
frs.seekg(0x800, ios::beg);
return (frs.good()) ? SQE_OK : SQE_R_BADFILE;
}
s32 fmt_codec::read_next_pass()
{
return SQE_OK;
}
s32 fmt_codec::read_scanline(RGBA *scan)
{
RGB rgb;
RGBA rgba;
u8 c, *p;
fmt_image *im = image(currentImage);
fmt_utils::fillAlpha(scan, im->w);
switch(sct.format)
{
case SCT_FORMAT_RGB:
for(s32 ch = 0;ch < 3;ch++)
for(s32 i = 0;i < im->w;i++)
{
if(!frs.readK(&c, sizeof(u8))) return SQE_R_BADFILE;
p = (u8 *)(scan + i);
*(p + ch) = c;
}
break;
case SCT_FORMAT_GRAY:
for(s32 i = 0;i < im->w;i++)
{
if(!frs.readK(&c, sizeof(c))) return SQE_R_BADFILE;
(scan+i)->r = c;
(scan+i)->g = c;
(scan+i)->b = c;
}
break;
case SCT_FORMAT_CMYK:
for(s32 ch = 0;ch < 4;ch++)
for(s32 i = 0;i < im->w;i++)
{
if(!frs.readK(&c, sizeof(u8))) return SQE_R_BADFILE;
p = (u8 *)(scan + i);
*(p + ch) = c;
}
for(s32 i = 0;i < im->w;i++)
{
scan[i].r = (scan[i].r * scan[i].a) >> 8;
scan[i].g = (scan[i].g * scan[i].a) >> 8;
scan[i].b = (scan[i].b * scan[i].a) >> 8;
scan[i].a = 255;
}
break;
}
return SQE_OK;
}
void fmt_codec::read_close()
{
frs.close();
finfo.meta.clear();
finfo.image.clear();
}
#include "fmt_codec_cd_func.h"
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