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446 lines
9.3 KiB
446 lines
9.3 KiB
/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
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Copyright (c) 2004 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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as32 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 <stdlib.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/error.h"
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#include "ksquirrel-libs/fmt_utils.h"
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#include "fmt_codec_bmp_defs.h"
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#include "fmt_codec_bmp.h"
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#include "../xpm/codec_bmp.xpm"
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/*
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*
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* This library works with the graphics-file formats used by the Microsoft Windows(tm)
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* operating system.
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*
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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 = "1.1.2";
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o->name = "Windows Bitmap";
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o->filter = "*.bmp *.dib ";
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o->config = "";
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o->mime = "";
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o->mimetype = "image/x-bmp";
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o->pixmap = codec_bmp;
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o->readable = true;
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o->canbemultiple = false;
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o->writestatic = true;
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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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pal_entr = 0;
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currentImage = -1;
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read_error = false;
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if(!frs.readK(&bfh, sizeof(BITMAPFILE_HEADER)))
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return SQE_R_BADFILE;
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if(!frs.readK(&bih, sizeof(BITMAPINFO_HEADER)))
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return SQE_R_BADFILE;
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if(bfh.Type != BMP_IDENTIFIER || bih.Size != 40)
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return SQE_R_BADFILE;
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if(bih.Compression != BI_RGB)
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return SQE_R_NOTSUPPORTED;
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finfo.animated = false;
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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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RGBA rgba;
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s32 i, j, scanShouldBe;
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if(bih.BitCount < 16)
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pal_entr = 1 << bih.BitCount;
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else
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pal_entr = 0;
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image.w = bih.Width;
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image.h = bih.Height;
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image.bpp = bih.BitCount;
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scanShouldBe = bih.Width;
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switch(image.bpp)
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{
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case 1:
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{
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s32 _tmp = scanShouldBe;
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scanShouldBe /= 8;
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scanShouldBe = scanShouldBe + ((_tmp%8)?1:0);
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}
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break;
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case 4: scanShouldBe = ((image.w)%2)?((scanShouldBe+1)/2):(scanShouldBe/2); break;
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case 8: break;
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case 16: scanShouldBe *= 2; break;
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case 24: scanShouldBe *= 3; break;
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case 32: break;
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default:
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return SQE_R_BADFILE;
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}
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for(j = 0;j < 4;j++)
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if((scanShouldBe+j)%4 == 0)
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{
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filler = j;
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break;
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}
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if(image.bpp < 16)
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{
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/* read palette */
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for(i = 0;i < pal_entr;i++)
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{
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if(!frs.readK(&rgba, sizeof(RGBA)))
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return SQE_R_BADFILE;
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(pal)[i].r = rgba.b;
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(pal)[i].g = rgba.g;
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(pal)[i].b = rgba.r;
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}
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}
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/* fseek to image bits */
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frs.seekg(bfh.OffBits, ios::beg);
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image.needflip = true;
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image.colorspace = (pal_entr ? "Color indexed":"RGB");
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image.compression = "-";
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finfo.image.push_back(image);
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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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u16 remain, scanShouldBe, j, counter = 0;
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u8 bt, dummy;
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fmt_image *im = image(currentImage);
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fmt_utils::fillAlpha(scan, im->w);
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switch(im->bpp)
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{
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case 1:
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{
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u8 index;
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remain=((im->w)<=8)?(0):((im->w)%8);
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scanShouldBe = im->w;
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s32 _tmp = scanShouldBe;
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scanShouldBe /= 8;
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scanShouldBe = scanShouldBe + ((_tmp%8)?1:0);
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// @todo get rid of miltiple 'if'
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for(j = 0;j < scanShouldBe;j++)
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{
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if(!frs.readK(&bt, 1))
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return SQE_R_BADFILE;
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if(j==scanShouldBe-1 && (remain-0)<=0 && remain)break; index = (bt & 128) >> 7; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-1)<=0 && remain)break; index = (bt & 64) >> 6; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-2)<=0 && remain)break; index = (bt & 32) >> 5; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-3)<=0 && remain)break; index = (bt & 16) >> 4; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-4)<=0 && remain)break; index = (bt & 8) >> 3; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-5)<=0 && remain)break; index = (bt & 4) >> 2; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-6)<=0 && remain)break; index = (bt & 2) >> 1; memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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if(j==scanShouldBe-1 && (remain-7)<=0 && remain)break; index = (bt & 1); memcpy(scan+(counter++), (pal)+index, sizeof(RGB));
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}
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for(j = 0;j < filler;j++)
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{
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if(!frs.readK(&dummy, 1))
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return SQE_R_BADFILE;
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}
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}
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break;
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case 4:
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{
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u8 index;
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remain = (im->w)%2;
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s32 ck = (im->w%2)?(im->w + 1):(im->w);
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ck /= 2;
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for(j = 0;j < ck-1;j++)
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{
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if(!frs.readK(&bt, 1))
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return SQE_R_BADFILE;
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index = (bt & 0xf0) >> 4;
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memcpy(scan+(counter++), (pal)+index, 3);
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index = bt & 0xf;
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memcpy(scan+(counter++), (pal)+index, 3);
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}
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if(!frs.readK(&bt, 1))
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return SQE_R_BADFILE;
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index = (bt & 0xf0) >> 4;
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memcpy(scan+(counter++), (pal)+index, 3);
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if(!remain)
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{
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index = bt & 0xf;
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memcpy(scan+(counter++), (pal)+index, 3);
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}
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for(j = 0;j < filler;j++)
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{
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if(!frs.readK(&dummy, 1))
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return SQE_R_BADFILE;
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}
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}
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break;
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case 8:
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{
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for(j = 0;j < im->w;j++)
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{
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if(!frs.readK(&bt, 1))
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return SQE_R_BADFILE;
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memcpy(scan+(counter++), (pal)+bt, 3);
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}
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for(j = 0;j < filler;j++)
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{
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if(!frs.readK(&dummy, 1))
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return SQE_R_BADFILE;
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}
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}
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break;
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case 16:
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{
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u16 word;
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for(j = 0;j < im->w;j++)
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{
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if(!frs.readK(&word, 2))
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return SQE_R_BADFILE;
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scan[counter].b = (word&0x1f) << 3;
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scan[counter].g = ((word&0x3e0) >> 5) << 3;
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scan[counter++].r = ((word&0x7c00)>>10) << 3;
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}
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for(j = 0;j < filler;j++)
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{
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if(!frs.readK(&dummy, 1))
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return SQE_R_BADFILE;
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}
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}
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break;
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case 24:
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{
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RGB rgb;
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for(j = 0;j < im->w;j++)
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{
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if(!frs.readK(&rgb, sizeof(RGB)))
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return SQE_R_BADFILE;
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scan[counter].r = rgb.b;
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scan[counter].g = rgb.g;
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scan[counter].b = rgb.r;
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counter++;
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}
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for(j = 0;j < filler;j++)
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{
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if(!frs.readK(&dummy, 1))
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return SQE_R_BADFILE;
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}
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}
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break;
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case 32:
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{
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RGBA rgba;
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for(j = 0;j < im->w;j++)
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{
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if(!frs.readK(&rgba, sizeof(RGBA)))
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return SQE_R_BADFILE;
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scan[j].r = rgba.b;
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scan[j].g = rgba.g;
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scan[j].b = rgba.r;
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}
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}
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break;
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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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void fmt_codec::getwriteoptions(fmt_writeoptionsabs *opt)
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{
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opt->interlaced = false;
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opt->compression_scheme = CompressionNo;
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opt->compression_min = 0;
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opt->compression_max = 0;
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opt->compression_def = 0;
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opt->passes = 1;
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opt->needflip = true;
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opt->palette_flags = 0 | fmt_image::pure32;
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}
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s32 fmt_codec::write_init(const std::string &file, const fmt_image &image, const fmt_writeoptions &opt)
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{
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if(!image.w || !image.h || file.empty())
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return SQE_W_WRONGPARAMS;
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writeimage = image;
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writeopt = opt;
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fws.open(file.c_str(), ios::binary | ios::out);
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if(!fws.good())
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return SQE_W_NOFILE;
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m_FILLER = (image.w < 4) ? (4-image.w) : image.w%4;
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return SQE_OK;
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}
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s32 fmt_codec::write_next()
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{
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m_bfh.Type = BMP_IDENTIFIER;
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m_bfh.Size = 0;
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m_bfh.Reserved1 = 0;
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m_bfh.OffBits = sizeof(BITMAPFILE_HEADER) + sizeof(BITMAPINFO_HEADER);
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m_bih.Size = 40;
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m_bih.Width = writeimage.w;
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m_bih.Height = writeimage.h;
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m_bih.Planes = 1;
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m_bih.BitCount = 24;
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m_bih.Compression = BI_RGB;
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m_bih.SizeImage = 0;
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m_bih.XPelsPerMeter = 0;
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m_bih.YPelsPerMeter = 0;
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m_bih.ClrUsed = 0;
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m_bih.ClrImportant = 0;
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if(!fws.writeK(&m_bfh, sizeof(BITMAPFILE_HEADER)))
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return SQE_W_ERROR;
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if(!fws.writeK(&m_bih, sizeof(BITMAPINFO_HEADER)))
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return SQE_W_ERROR;
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return SQE_OK;
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}
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s32 fmt_codec::write_next_pass()
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{
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return SQE_OK;
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}
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s32 fmt_codec::write_scanline(RGBA *scan)
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{
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s8 fillchar = '0';
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RGB rgb;
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for(s32 x = 0;x < writeimage.w;x++)
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{
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rgb.r = scan[x].b;
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rgb.g = scan[x].g;
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rgb.b = scan[x].r;
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if(!fws.writeK(&rgb, sizeof(RGB)))
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return SQE_W_ERROR;
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}
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if(m_FILLER)
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{
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for(s32 s = 0;s < m_FILLER;s++)
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fws.writeK(&fillchar, sizeof(s8));
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}
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return SQE_OK;
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}
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void fmt_codec::write_close()
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{
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fws.close();
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}
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std::string fmt_codec::extension(const s32 /*bpp*/)
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{
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return std::string("bmp");
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}
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#include "fmt_codec_cd_func.h"
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