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libksquirrel/kernel/kls_cut/fmt_codec_cut.cpp

174 lines
3.6 KiB

/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
Copyright (c) 2004 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
as32 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "ksquirrel-libs/fmt_types.h"
#include "ksquirrel-libs/fileio.h"
#include "ksquirrel-libs/error.h"
#include "ksquirrel-libs/fmt_utils.h"
#include "fmt_codec_cut_defs.h"
#include "fmt_codec_cut.h"
#include "../xpm/codec_cut.xpm"
/*
*
* The Dr. Halo file format is a device-independent interchange format used for
* transporting image data from one hardware environment or operating system to
* another. This format is associated with the HALO Image File Format
* Library.
*
*/
fmt_codec::fmt_codec() : fmt_codec_base()
{
for(s32 i = 0;i < 256;i++)
memset(pal+i, i, sizeof(RGB));
}
fmt_codec::~fmt_codec()
{}
void fmt_codec::options(codec_options *o)
{
o->version = "0.1.1";
o->name = "Dr. Halo CUT";
o->filter = "*.cut ";
o->config = "";
o->mime = "";
o->mimetype = "image/x-cut";
o->pixmap = codec_cut;
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;
finfo.animated = false;
return SQE_OK;
}
s32 fmt_codec::read_next()
{
s16 width, height;
s32 dummy;
currentImage++;
if(currentImage)
return SQE_NOTOK;
fmt_image image;
if(!frs.readK(&width, sizeof(s16))) return SQE_R_BADFILE;
if(!frs.readK(&height, sizeof(s16))) return SQE_R_BADFILE;
if(!frs.readK(&dummy, sizeof(s32))) return SQE_R_BADFILE;
image.w = width;
image.h = height;
image.bpp = 8;
image.compression = "RLE";
image.colorspace = "Color indexed";
finfo.image.push_back(image);
return SQE_OK;
}
s32 fmt_codec::read_next_pass()
{
return SQE_OK;
}
s32 fmt_codec::read_scanline(RGBA *scan)
{
s32 i = 0, j;
u8 count, run, c;
fmt_image *im = image(currentImage);
fmt_utils::fillAlpha(scan, im->w);
while(i < im->w)
{
if(!frs.readK(&count, 1)) return SQE_R_BADFILE;
if(count == 0)
{
frs.readK(&c, 1);
if(!frs.readK(&c, 1)) return SQE_R_BADFILE;
continue; // ugly hack
}
else if(count & 0x80)
{
count &= ~(0x80);
if(!frs.readK(&run, 1)) return SQE_R_BADFILE;
for(j = 0;j < count;j++)
{
memcpy(scan+i, pal+run, sizeof(RGB));
i++;
}
}
else
{
for(j = 0;j < count;j++)
{
if(!frs.readK(&run, 1)) return SQE_R_BADFILE;
memcpy(scan+i, pal+run, sizeof(RGB));
i++;
}
}
}
return SQE_OK;
}
void fmt_codec::read_close()
{
frs.close();
finfo.meta.clear();
finfo.image.clear();
}
#include "fmt_codec_cd_func.h"