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| -rw-r--r-- | engines/sherlock/decompress.cpp | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/engines/sherlock/decompress.cpp b/engines/sherlock/decompress.cpp deleted file mode 100644 index 8e02da3212..0000000000 --- a/engines/sherlock/decompress.cpp +++ /dev/null @@ -1,128 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - */ - -#include "sherlock/decompress.h" - -namespace Sherlock { - -/** - * Decompresses an LZW compressed resource. If no outSize is specified, it will - * decompress the entire resource. If, however, an explicit size is specified, - * then it means we're already within a resource, and only want to decompress - * part of it. - */ -Common::SeekableReadStream *decompressLZ(Common::SeekableReadStream &source, int32 outSize) { - if (outSize == -1) { - source.seek(5); - outSize = source.readSint32LE(); - } - - byte lzWindow[4096]; - uint16 lzWindowPos; - uint16 cmd; - - byte *outBuffer = new byte[outSize]; - byte *outBufferEnd = outBuffer + outSize; - Common::MemoryReadStream *outS = new Common::MemoryReadStream(outBuffer, outSize, DisposeAfterUse::YES); - - memset(lzWindow, 0xFF, 0xFEE); - lzWindowPos = 0xFEE; - cmd = 0; - - do { - cmd >>= 1; - if (!(cmd & 0x100)) - cmd = source.readByte() | 0xFF00; - - if (cmd & 1) { - byte literal = source.readByte(); - *outBuffer++ = literal; - lzWindow[lzWindowPos] = literal; - lzWindowPos = (lzWindowPos + 1) & 0x0FFF; - } else { - int copyPos, copyLen; - copyPos = source.readByte(); - copyLen = source.readByte(); - copyPos = copyPos | ((copyLen & 0xF0) << 4); - copyLen = (copyLen & 0x0F) + 3; - while (copyLen--) { - byte literal = lzWindow[copyPos]; - copyPos = (copyPos + 1) & 0x0FFF; - *outBuffer++ = literal; - lzWindow[lzWindowPos] = literal; - lzWindowPos = (lzWindowPos + 1) & 0x0FFF; - } - } - } while (outBuffer < outBufferEnd); - - return outS; -} - - -/** - * Decompresses a Rose Tattoo resource - * -Common::SeekableReadStream *decompress32(Common::SeekableReadStream &source, int32 outSize) { - if (outSize == -1) { - outSize = source.readSint32LE(); - } - - byte lzWindow[8192]; - byte *outBuffer = new byte[outSize]; - byte *outBufferEnd = outBuffer + outSize; - Common::MemoryReadStream *outS = new Common::MemoryReadStream(outBuffer, outSize, DisposeAfterUse::YES); - - memset(lzWindow, 0xFF, 8192); - int lzWindowPos = 0xFEE; - int cmd = 0; - - do { - cmd >>= 1; - if (!(cmd & 0x100)) - cmd = source.readByte() | 0xFF00; - - if (cmd & 1) { - byte literal = source.readByte(); - *outBuffer++ = literal; - lzWindow[lzWindowPos] = literal; - lzWindowPos = (lzWindowPos + 1) & 0x0FFF; - } else { - int copyPos, copyLen; - copyPos = source.readByte(); - copyLen = source.readByte(); - copyPos = copyPos | ((copyLen & 0xF0) << 4); - copyLen = (copyLen & 0x0F) + 3; - while (copyLen--) { - byte literal = lzWindow[copyPos]; - copyPos = (copyPos + 1) & 0x0FFF; - *outBuffer++ = literal; - lzWindow[lzWindowPos] = literal; - lzWindowPos = (lzWindowPos + 1) & 0x0FFF; - } - } - } while (outBuffer < outBufferEnd); - - return outS; -} -*/ - -} // namespace Sherlock |