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/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
Copyright (c) 2005 Dmitry Baryshev <[email protected]>
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 <cctype>
#include <stdio.h>
#include <string.h>
#include "ksquirrel-libs/fmt_types.h"
#include "ksquirrel-libs/fmt_utils.h"
#include "ksquirrel-libs/fileio.h"
#include "ksquirrel-libs/error.h"
#include "fmt_codec_sun_defs.h"
#include "fmt_codec_sun.h"
#include "../xpm/codec_sun.xpm"
/*
*
* The icons found in the Open Look and SunView Graphical User Interfaces available
* on the Sun Microsystems UNIX-based platforms are stored in a simple format known
* as the Sun Icon format
*
*/
static const RGB mono[2] = { RGB(255,255,255), RGB(0,0,0) };
static const char * lex[5] =
{
"Format_version",
"Width",
"Height",
"Depth",
"Valid_bits_per_item"
};
// internal function
bool scanForLex(ifstreamK &f, bool digit = false);
fmt_codec::fmt_codec() : fmt_codec_base()
{}
fmt_codec::~fmt_codec()
{}
void fmt_codec::options(codec_options *o)
{
o->version = "0.9.1";
o->name = "SUN Icon";
o->filter = "*.sun ";
o->config = "";
o->mime = "/\\* Format_";
o->mimetype = "image/x-sun";
o->pixmap = codec_sun;
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::in);
if(!frs.good())
return SQE_R_NOFILE;
currentImage = -1;
finfo.animated = false;
return SQE_OK;
}
s32 fmt_codec::read_next()
{
currentImage++;
if(currentImage)
return SQE_NOTOK;
fmt_image image;
s8 str[128];
u32 var, ver;
u32 * pointers[5] =
{
&ver,
(u32 *)&image.w,
(u32 *)&image.h,
(u32 *)&image.bpp,
&validbits
};
for(s32 i = 0;i < 5;i++)
{
if(!scanForLex(frs))
return SQE_R_BADFILE;
frs.getline(str, 127, '=');
if(!frs.good())
return SQE_R_BADFILE;
if(strncmp(lex[i], str, strlen(lex[i])))
return SQE_R_BADFILE;
frs >> var;
*(pointers[i]) = var;
}
if(ver != SUN_ICON_VERSION)
return SQE_R_BADFILE;
// ignore images with width != 64 or height != 64
// TODO: get rid of this if()
if(image.w != 64 || image.h != 64)
return SQE_R_NOTSUPPORTED;
if(image.bpp != 1)
return SQE_R_NOTSUPPORTED;
if(validbits != 16 && validbits != 32)
return SQE_R_BADFILE;
if(!scanForLex(frs, true))
return SQE_R_BADFILE;
image.compression = "-";
image.colorspace = "Monochrome";
finfo.image.push_back(image);
line = -1;
return SQE_OK;
}
s32 fmt_codec::read_next_pass()
{
return SQE_OK;
}
s32 fmt_codec::read_scanline(RGBA *scan)
{
RGB rgb;
RGBA rgba;
u32 var, i = 0, j = 0;
s32 decoded = 0;
u8 indexes[32];
bool lasthex;
fmt_image *im = image(currentImage);
fmt_utils::fillAlpha(scan, im->w);
line++;
while(decoded < im->w)
{
if(!frs.readCHex(var))
return SQE_R_BADFILE;
if(validbits == 16)
fmt_utils::expandMono2Byte(var, indexes);
else
fmt_utils::expandMono4Byte(var, indexes);
decoded += validbits;
lasthex = (decoded >= im->w && line == im->h-1);
if(!scanForLex(frs, true) && !lasthex)
return SQE_R_BADFILE;
j = i + validbits;
for(u32 k = 0;i < j;i++,k++)
memcpy(scan+i, mono+indexes[k], sizeof(RGB));
}
return SQE_OK;
}
void fmt_codec::read_close()
{
frs.close();
finfo.meta.clear();
finfo.image.clear();
}
bool scanForLex(ifstreamK &f, bool digit)
{
u8 c;
bool found = false;
while(f.readK(&c, sizeof(u8)))
{
// cout << "Read " << c << endl;
if((!digit && isalpha(c)) || (digit && isdigit(c)))
{
found = true;
break;
}
}
if(found)
f.seekg(-1, ios::cur);
return found;
}
#include "fmt_codec_cd_func.h"
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