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Diffstat (limited to 'engines/titanic/compression.cpp')
| -rw-r--r-- | engines/titanic/compression.cpp | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/engines/titanic/compression.cpp b/engines/titanic/compression.cpp deleted file mode 100644 index 0c12ee089f..0000000000 --- a/engines/titanic/compression.cpp +++ /dev/null @@ -1,291 +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 "titanic/compression.h" -#include "common/textconsole.h" - -namespace Titanic { - -CompressionData::CompressionData() { - _commandNum = 0; - _field4 = 0; - _field8 = 0; - _fieldC = 0; - _field10 = 0; - _field14 = 0; -} - -/*------------------------------------------------------------------------*/ - -Compression::Compression() { - _srcPtr = nullptr; - _srcCount = 0; - _field8 = 0; - _destPtr = nullptr; - _destCount = 0; - _field14 = 0; - _errorMessage = nullptr; - _compressionData = nullptr; - _createFn = nullptr; - _destroyFn = nullptr; - _field28 = 0; - _field2C = 0; - _field30 = 0; - _field34 = 0; -} - -Compression::~Compression() { - close(); -} - -void Compression::initDecompress(const char *version, int v) { - if (!version || *version != '1') - error("Bad version"); - - _errorMessage = nullptr; - if (!_createFn) { - _createFn = &Compression::createMethod; - _field28 = 0; - } - - if (!_destroyFn) { - _destroyFn = &Compression::destroyMethod; - } - - _compressionData = (this->*_createFn)(_field28, 1); - _compressionData->_field14 = 0; - _compressionData->_fieldC = 0; - if (v < 0) { - v = -v; - _compressionData->_fieldC = 1; - } - - if (v < 8 || v > 15) - error("Bad parameter"); - - _compressionData->_field10 = v; - _compressionData->_field14 = sub1(_compressionData->_fieldC ? nullptr : &Compression::method3, 1 << v); - - if (_compressionData->_field14) - sub2(); - else - close(); -} - -void Compression::initCompress(const char *version, int v) { - error("TODO"); -} - - -int Compression::sub1(Method3Fn fn, int v) { - return 0; -} - -void Compression::close() { - if (_destroyFn) - (this->*_destroyFn)(_compressionData); -} - -CompressionData *Compression::createMethod(int v1, int v2) { - return new CompressionData(); -} - -void Compression::destroyMethod(CompressionData *ptr) { - delete ptr; -} - -int Compression::compress(int v) { - return 0; -} - -int Compression::decompress(size_t count) { - if (!_compressionData || !_srcPtr || !count) - // Needed fields aren't set - return -2; - - int result = -5; - int ebx = 5; - uint v; - - for (;;) { - switch (_compressionData->_commandNum) { - case 0: - if (!_srcCount) - return result; - - result = 0; - --_srcCount; - ++_field8; - _compressionData->_field4 = *_srcPtr++; - - if ((_compressionData->_field4 & 0xf) == 8) { - _compressionData->_commandNum = 13; - _compressionData->_field4 = ebx; - _errorMessage = "unknown compression method"; - } else { - if ((_compressionData->_field4 / 16 + 8) > _compressionData->_field10) { - _compressionData->_commandNum = 13; - _compressionData->_field4 = ebx; - _errorMessage = "invalid window size"; - } else { - _compressionData->_commandNum = 1; - } - } - break; - - case 1: - if (!_srcCount) - return result; - - result = 0; - --_srcCount; - ++_field8; - v = *_srcPtr++; - if ((_compressionData->_field4 * 256 + v) % 31) { - _compressionData->_commandNum = 13; - _compressionData->_field4 = ebx; - ebx = 5; - _errorMessage = "incorrect header check"; - } else if (!(v & 0x20)) { - _compressionData->_commandNum = 7; - ebx = 5; - } else { - _compressionData->_commandNum = 2; - ebx = 5; - } - break; - - case 2: - if (!_srcCount) - return result; - - result = 0; - --_srcCount; - ++_field8; - _compressionData->_field8 = (uint)*_srcPtr++ << 24; - _compressionData->_commandNum = 3; - break; - - case 3: - if (!_srcCount) - return result; - - result = 0; - --_srcCount; - ++_field8; - _compressionData->_field8 += (uint)*_srcPtr++ << 16; - _compressionData->_commandNum = 4; - break; - - case 4: - if (!_srcCount) - return result; - - result = 0; - --_srcCount; - ++_field8; - _compressionData->_field8 = (uint)*_srcPtr++ << 8; - _compressionData->_commandNum = ebx; - break; - - case 5: - if (!_srcCount) - return result; - - --_srcCount; - ++_field8; - _compressionData->_field8 += *_srcPtr++; - _compressionData->_commandNum = ebx; - _field30 = _compressionData->_field8; - _compressionData->_commandNum = 6; - return 2; - - case 6: - _compressionData->_commandNum = 13; - _compressionData->_field4 = 0; - _errorMessage = "need dictionary"; - return -2; - - case 7: - error("TODO"); - break; - - case 8: - if (!_srcCount) - return result; - - --_srcCount; - ++_field8; - _compressionData->_field8 += *_srcPtr++ << 24; - _compressionData->_commandNum = 9; - break; - - case 9: - if (!_srcCount) - return result; - - --_srcCount; - ++_field8; - _compressionData->_field8 += *_srcPtr++ << 16; - _compressionData->_commandNum = 10; - break; - - case 10: - if (!_srcCount) - return result; - - --_srcCount; - ++_field8; - _compressionData->_field8 += *_srcPtr++ << 8; - _compressionData->_commandNum = 11; - break; - - case 11: - if (!_srcCount) - return result; - - --_srcCount; - ++_field8; - _compressionData->_field8 += *_srcPtr++ << 8; - - if (_compressionData->_field4 == _compressionData->_field8) { - _compressionData->_commandNum = 12; - } else { - _compressionData->_commandNum = 13; - _compressionData->_field4 = ebx; - _errorMessage = "incorrect data check"; - } - break; - - case 12: - return 1; - - case 13: - return -3; - - default: - return -2; - } - } -} - -} // End of namespace Titanic |