52 lines
1.6 KiB
C++
52 lines
1.6 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "freescape/freescape.h"
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namespace Freescape {
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byte *FreescapeEngine::decompressC64RLE(byte *buffer, int *size, byte marker) {
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Common::MemoryReadWriteStream *tmp = new Common::MemoryReadWriteStream(DisposeAfterUse::NO);
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// Format is: [ Byte, Marker, Length ] or [ Byte ]
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for (int i = 0; i < *size - 1; ) {
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if (buffer[i] == marker && i > 0) {
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int length = buffer[i + 1];
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byte value = buffer[i - 1];
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if (length == 0)
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tmp->writeByte(value);
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for (int j = 0; j < length; j++) {
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tmp->writeByte(value);
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}
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i += 2;
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} else {
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tmp->writeByte(buffer[i]);
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i += 1;
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}
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}
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*size = tmp->size();
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byte *data = tmp->getData();
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delete tmp;
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return data;
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}
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} // namespace Freescape
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