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author | Paul Gilbert | 2012-04-29 11:01:40 +1000 |
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committer | Paul Gilbert | 2012-04-29 11:01:40 +1000 |
commit | f21bfe1c41148368f30b0602a8e8820fbd543543 (patch) | |
tree | 33dd374be4b3f994250df07d98421ee3bfc58f29 /engines/tony | |
parent | 40680deaa5f94b1644cf277b8c9a89796a1ff815 (diff) | |
download | scummvm-rg350-f21bfe1c41148368f30b0602a8e8820fbd543543.tar.gz scummvm-rg350-f21bfe1c41148368f30b0602a8e8820fbd543543.tar.bz2 scummvm-rg350-f21bfe1c41148368f30b0602a8e8820fbd543543.zip |
TONY: Added resource update manager
Diffstat (limited to 'engines/tony')
-rw-r--r-- | engines/tony/module.mk | 1 | ||||
-rw-r--r-- | engines/tony/tony.h | 2 | ||||
-rw-r--r-- | engines/tony/utils.cpp | 114 | ||||
-rw-r--r-- | engines/tony/utils.h | 54 |
4 files changed, 171 insertions, 0 deletions
diff --git a/engines/tony/module.mk b/engines/tony/module.mk index b4d0d7321d..0ec4563207 100644 --- a/engines/tony/module.mk +++ b/engines/tony/module.mk @@ -3,6 +3,7 @@ MODULE := engines/tony MODULE_OBJS := \ detection.o \ tony.o \ + utils.o \ mpal/expr.o \ mpal/loadmpc.o \ mpal/mpal.o \ diff --git a/engines/tony/tony.h b/engines/tony/tony.h index 804e489d82..9bf5f4cb98 100644 --- a/engines/tony/tony.h +++ b/engines/tony/tony.h @@ -31,6 +31,7 @@ #include "engines/engine.h" #include "tony/mpal/mpal.h" +#include "tony/utils.h" /** * This is the namespace of the Tony engine. @@ -67,6 +68,7 @@ protected: public: LPCUSTOMFUNCTION FuncList[300]; Common::RandomSource _randomSource; + RMResUpdate _resUpdate; public: TonyEngine(OSystem *syst, const TonyGameDescription *gameDesc); virtual ~TonyEngine(); diff --git a/engines/tony/utils.cpp b/engines/tony/utils.cpp new file mode 100644 index 0000000000..1368111a05 --- /dev/null +++ b/engines/tony/utils.cpp @@ -0,0 +1,114 @@ +/* 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 "tony/utils.h" +#include "mpal/lzo.h" + +namespace Tony { + +/****************************************************************************\ +* Resource Update +\****************************************************************************/ + +RMResUpdate::RMResUpdate() { + _infos = NULL; +} + +RMResUpdate::~RMResUpdate() { + if (_infos) { + delete[] _infos; + _infos = NULL; + } + + if (_hFile.isOpen()) + _hFile.close(); +} + +void RMResUpdate::Init(const Common::String &fileName) { + // Open the resource update file + if (!_hFile.open(fileName)) + // It doesn't exist, so exit immediately + return; + + uint8 version; + uint32 i; + + version = _hFile.readByte(); + _numUpd = _hFile.readUint32LE(); + + _infos = new ResUpdInfo[_numUpd]; + + // Load the index of the resources in the file + for (i=0; i<_numUpd; ++i) { + ResUpdInfo &info = _infos[i]; + + info.dwRes = _hFile.readUint32LE(); + info.offset = _hFile.readUint32LE(); + info.size = _hFile.readUint32LE(); + info.cmpSize = _hFile.readUint32LE(); + } +} + +const byte *RMResUpdate::QueryResource(uint32 dwRes) { + // If there isn't an update file, return NULL + if (!_hFile.isOpen()) + return NULL; + + uint32 i; + for (i=0; i < _numUpd; ++i) + if (_infos[i].dwRes == dwRes) + // Found the index + break; + + if (i==_numUpd) + // Couldn't find a matching resource, so return NULL + return NULL; + + const ResUpdInfo &info = _infos[i]; + byte *cmpBuf = new byte[info.cmpSize]; + uint32 dwRead; + + // Move to the correct offset and read in the compressed data + _hFile.seek(info.offset); + dwRead = _hFile.read(cmpBuf, info.cmpSize); + + if (info.cmpSize > dwRead) { + // Error occurred reading data, so return NULL + delete[] cmpBuf; + return NULL; + } + + // Allocate space for the output resource + byte *lpDestBuf = new byte[info.size]; + uint32 dwSize; + + // Decompress the data + MPAL::lzo1x_decompress(cmpBuf, info.cmpSize, lpDestBuf, &dwSize); + + // Delete buffer for compressed data + delete [] cmpBuf; + + // Return the resource + return lpDestBuf; +} + +} // End of namespace Tony diff --git a/engines/tony/utils.h b/engines/tony/utils.h new file mode 100644 index 0000000000..b1afcca074 --- /dev/null +++ b/engines/tony/utils.h @@ -0,0 +1,54 @@ +/* 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. + * + */ + +#ifndef TONY_UTILS_H +#define TONY_UTILS_H + +#include "common/scummsys.h" +#include "common/file.h" +#include "common/str.h" + +namespace Tony { + +class RMResUpdate { + struct ResUpdInfo { + uint32 dwRes; + uint32 offset; + uint32 size; + uint32 cmpSize; + }; + + uint32 _numUpd; + ResUpdInfo *_infos; + Common::File _hFile; + +public: + RMResUpdate(); + ~RMResUpdate(); + + void Init(const Common::String &fileName); + const byte *QueryResource(uint32 dwRes); +}; + +} // End of namespace Tony + +#endif /* TONY_H */ |