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112 lines
3.0 KiB
C++
112 lines
3.0 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 "director/dib.h"
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#include "common/stream.h"
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#include "common/substream.h"
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#include "common/textconsole.h"
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#include "graphics/pixelformat.h"
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#include "graphics/surface.h"
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#include "graphics/palette.h"
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#include "image/codecs/codec.h"
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#include "common/util.h"
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#include "common/debug.h"
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#include "image/codecs/bmp_raw.h"
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#include "common/system.h"
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namespace Director {
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DIBDecoder::DIBDecoder() {
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_surface = 0;
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_palette = 0;
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_paletteColorCount = 0;
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_codec = 0;
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}
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DIBDecoder::~DIBDecoder() {
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destroy();
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}
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void DIBDecoder::destroy() {
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_surface = 0;
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delete[] _palette;
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_palette = 0;
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_paletteColorCount = 0;
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delete _codec;
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_codec = 0;
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}
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void DIBDecoder::loadPalette(Common::SeekableReadStream &stream) {
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uint16 steps = stream.size() / 6;
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uint16 index = (steps * 3) - 1;
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_paletteColorCount = steps;
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_palette = new byte[index];
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for (uint8 i = 0; i < steps; i++) {
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_palette[index - 2] = stream.readByte();
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stream.readByte();
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_palette[index - 1] = stream.readByte();
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stream.readByte();
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_palette[index] = stream.readByte();
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stream.readByte();
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index -= 3;
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}
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}
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bool DIBDecoder::loadStream(Common::SeekableReadStream &stream) {
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uint32 headerSize = stream.readUint32LE();
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if (headerSize != 40)
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return false;
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uint32 width = stream.readUint32LE();
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uint32 height = stream.readUint32LE();
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stream.readUint16LE(); // planes
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uint16 bitsPerPixel = stream.readUint16LE();
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uint32 compression = stream.readUint32BE();
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uint32 imageSize = stream.readUint32LE();
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/* uint32 pixelsPerMeterX = */ stream.readUint32LE();
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/* uint32 pixelsPerMeterY = */ stream.readUint32LE();
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_paletteColorCount = stream.readUint32LE();
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/* uint32 colorsImportant = */ stream.readUint32LE();
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_paletteColorCount = (_paletteColorCount == 0) ? 255: _paletteColorCount;
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uint16 imageRawSize = stream.size() - 40;
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Common::SeekableSubReadStream subStream(&stream, 40, stream.size());
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_codec = Image::createBitmapCodec(compression, width, height, bitsPerPixel);
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if (!_codec)
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return false;
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_surface = _codec->decodeFrame(subStream);
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return true;
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}
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} // End of namespace Director
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