mirror of
https://github.com/libretro/scummvm.git
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86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "file.h"
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#define MD5_COMPUTE_SIZE 1024
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uint32 File::computeMD5() {
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uint32 total = 0;
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seek(0);
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for (int idx = 0; idx < MD5_COMPUTE_SIZE; ++idx)
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total += readByte();
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seek(0);
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return total;
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}
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void Surface::setPaletteEntry(byte index, byte r, byte g, byte b) {
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byte *pal = _palette + index * 3;
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pal[0] = r;
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pal[1] = g;
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pal[2] = b;
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}
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void Surface::saveToFile(const char *filename) {
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WriteFile f(filename);
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f.writeByte('B');
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f.writeByte('M');
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f.writeLong(0x436 + _w * _h + 2); // File size
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f.writeWord(0); // Custom 1
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f.writeWord(0); // Custom 2
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f.writeLong(0x436); // Pixels offset
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int pitch = _w;
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if (pitch % 4)
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pitch += 4 - (pitch % 4);
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f.writeLong(40); // Info size
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f.writeLong(_w); // Width
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f.writeLong(_h); // Height
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f.writeWord(1); // # Planes
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f.writeWord(8); // Bits per pixel
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f.writeLong(0); // Compression
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f.writeLong(pitch * _h); // Image size
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f.writeLong(3790); // Pixels per meter X
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f.writeLong(3800); // Pixels per meter Y
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f.writeLong(0); // color count
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f.writeLong(0); // important colors
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// Palette
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byte *pal = _palette;
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for (int idx = 0; idx < 256; ++idx, pal += 3) {
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f.write(pal, 3);
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f.writeByte(0);
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}
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// Write out each line from the bottom up
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for (int y = _h - 1; y >= 0; --y) {
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byte *lineP = getBasePtr(0, y);
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f.write(lineP, _w);
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if (_w % 4)
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f.writeRepeating(0, 4 - (_w % 4));
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}
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}
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