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208 lines
4.8 KiB
208 lines
4.8 KiB
/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
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Copyright (c) 2005 Dmitry Baryshev <ksquirrel@tut.by>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation;
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either version 2 of the License, or (at your option) any later
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version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <iostream>
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#include <stdio.h>
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#include <string.h>
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#include "ksquirrel-libs/fmt_types.h"
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#include "ksquirrel-libs/fileio.h"
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#include "ksquirrel-libs/fmt_utils.h"
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#include "fmt_codec_koala_defs.h"
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#include "fmt_codec_koala.h"
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#include "ksquirrel-libs/error.h"
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#include "../xpm/codec_koala.xpm"
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// Code partially taken from FreeImage3
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/*
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*
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* Commodore 64 Koala
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*
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*/
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const RGB c64pal[16] =
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{
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RGB( 0, 0, 0 ), // Black
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RGB( 255, 255, 255 ), // White
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RGB( 170, 17, 17 ), // Red
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RGB( 12, 204, 204 ), // Cyan
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RGB( 221, 51, 221 ), // Purple
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RGB( 0, 187, 0 ), // Green
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RGB( 0, 0, 204 ), // Blue
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RGB( 255, 255, 140 ), // Yellow
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RGB( 204, 119, 34 ), // Orange
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RGB( 136, 68, 0 ), // Brown
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RGB( 255, 153, 136 ), // Light red
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RGB( 92, 92, 92 ), // Gray 1
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RGB( 170, 170, 170 ), // Gray 2
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RGB( 140, 255, 178 ), // Light green
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RGB( 39, 148, 255 ), // Light blue
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RGB( 196, 196, 196 ) // Gray 3
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};
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fmt_codec::fmt_codec() : fmt_codec_base()
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{}
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fmt_codec::~fmt_codec()
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{}
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void fmt_codec::options(codec_options *o)
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{
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o->version = "0.2.2";
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o->name = "Commodore 64 Koala";
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o->filter = "*.koa *.kla ";
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o->config = "";
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o->mime = "\x0000\x0060";
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o->mimetype = "image/x-koala";
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o->pixmap = codec_koala;
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o->readable = true;
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o->canbemultiple = false;
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o->writestatic = false;
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o->writeanimated = false;
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o->needtempfile = false;
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}
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s32 fmt_codec::read_init(const std::string &file)
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{
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frs.open(file.c_str(), ios::binary | ios::in);
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if(!frs.good())
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return SQE_R_NOFILE;
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currentImage = -1;
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read_error = false;
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finfo.animated = false;
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pixel_mask[0] = 0xc0;
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pixel_mask[1] = 0x30;
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pixel_mask[2] = 0x0c;
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pixel_mask[3] = 0x03;
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pixel_displ[0] = 6;
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pixel_displ[1] = 4;
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pixel_displ[2] = 2;
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pixel_displ[3] = 0;
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return SQE_OK;
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}
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s32 fmt_codec::read_next()
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{
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currentImage++;
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if(currentImage)
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return SQE_NOTOK;
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fmt_image image;
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u8 load[2];
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if(!frs.readK(load, sizeof(load)))
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return SQE_R_BADFILE;
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if(load[0] != 0x00 || load[1] != 0x60)
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{
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((u8 *)&koala)[0] = load[0];
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((u8 *)&koala)[1] = load[1];
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if(!frs.readK((u8 *)&koala + 2, 10001 - 2))
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return SQE_R_BADFILE;
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}
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else
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{
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if(!frs.readK((u8 *)&koala, 10001))
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return SQE_R_BADFILE;
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}
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foundcolor = 0;
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image.w = KOALA_WIDTH;
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image.h = KOALA_HEIGHT;
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image.bpp = 8;
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image.compression = "-";
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image.colorspace = fmt_utils::colorSpaceByBpp(8);
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finfo.image.push_back(image);
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line = -1;
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return SQE_OK;
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}
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s32 fmt_codec::read_next_pass()
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{
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return SQE_OK;
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}
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s32 fmt_codec::read_scanline(RGBA *scan)
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{
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line++;
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fmt_image *im = image(currentImage);
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fmt_utils::fillAlpha(scan, im->w);
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for(s32 x = 0;x < KOALA_WIDTH / 2;x++)
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{
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index = (x / 4) * 8 + (line % 8) + (line / 8) * KOALA_WIDTH;
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colorindex = (x / 4) + (line / 8) * 40;
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pixel = (koala.image[index] & pixel_mask[x % 4]) >> pixel_displ[x % 4];
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// Retrieve RGB values
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switch(pixel)
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{
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case 0: // Background
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foundcolor = koala.background;
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break;
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case 1: // Color 1
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foundcolor = koala.color1[colorindex] >> 4;
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break;
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case 2: // Color 2
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foundcolor = koala.color1[colorindex] & 0xf;
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break;
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case 3: // Color 3
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foundcolor = koala.color2[colorindex] & 0xf;
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break;
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}
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memcpy(scan+x*2, c64pal+foundcolor, sizeof(RGB));
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memcpy(scan+x*2+1, c64pal+foundcolor, sizeof(RGB));
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}
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return SQE_OK;
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}
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void fmt_codec::read_close()
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{
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frs.close();
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finfo.meta.clear();
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finfo.image.clear();
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}
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#include "fmt_codec_cd_func.h"
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