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Diffstat (limited to 'engines/voyeur/files.cpp')
-rw-r--r-- | engines/voyeur/files.cpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/engines/voyeur/files.cpp b/engines/voyeur/files.cpp new file mode 100644 index 0000000000..4480f48f18 --- /dev/null +++ b/engines/voyeur/files.cpp @@ -0,0 +1,143 @@ +/* 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 "voyeur/files.h" + +namespace Voyeur { + +FilesManager::FilesManager() { + _decompressSize = 0x7000; +} + +bool FilesManager::openBOLTLib(const Common::String &filename, BoltFile *&boltFile) { + if (boltFile != NULL) { + _curLibPtr = boltFile; + return true; + } + + // TODO: Specific library classes for buoy.blt versus stampblt.blt + // Create the bolt file interface object and load the index + boltFile = _curLibPtr = new BoltFile(); + return true; +} + +/*------------------------------------------------------------------------*/ + +#define BOLT_GROUP_SIZE 16 + +BoltFile *BoltFile::_curLibPtr = NULL; +BoltGroup *BoltFile::_curGroupPtr = NULL; +byte *BoltFile::_curMemInfoPtr = NULL; +int BoltFile::_fromGroupFlag = 0; + +BoltFile::BoltFile() { + if (!_curFd.open("buoy.blt")) + error("Could not open buoy.blt"); + _curFilePosition = 0; + + // Read in the file header + byte header[16]; + _curFd.read(&header[0], 16); + + if (strncmp((const char *)&header[0], "BOLT", 4) != 0) + error("Tried to load non-bolt file"); + + int totalGroups = header[11] ? header[11] : 0x100; + for (int i = 0; i < totalGroups; ++i) + _groups.push_back(BoltGroup(_curFd.readStream(_curFd.size()))); +} + +BoltFile::~BoltFile() { + _curFd.close(); +} + +bool BoltFile::getBoltGroup(uint32 id) { + ++_fromGroupFlag; + _curLibPtr = this; + _curGroupPtr = &_groups[(id >> 8) & 0xff]; + int count = _curGroupPtr->_count ? _curGroupPtr->_count : 256; + + if (_curGroupPtr->_groupPtr) { + // Group already loaded + _curMemInfoPtr = _curGroupPtr->_groupPtr; + } else { + // Load the group + _curGroupPtr->load(); + } + + if (_curGroupPtr->_callInitGro) + initGro(); + + if ((id >> 16) == 0) { + if (!_curGroupPtr->_loaded) { + _curGroupPtr->load(); + } else { + id &= 0xff00; + for (int idx = 0; idx < count; ++idx, ++id) { + byte *member = getBoltMember(id); + assert(member); + } + } + } + + resolveAll(); + --_fromGroupFlag; + return true; +} + +/*------------------------------------------------------------------------*/ + +BoltGroup::BoltGroup(Common::SeekableReadStream *f): _file(f) { + byte buffer[BOLT_GROUP_SIZE]; + + _groupPtr = NULL; + + _file->read(&buffer[0], BOLT_GROUP_SIZE); + _loaded = false; + _callInitGro = buffer[1] != 0; + _count = buffer[3]; + _fileOffset = READ_LE_UINT32(&buffer[8]); +} + +void BoltGroup::load() { + _file->seek(_fileOffset); + + byte header[4]; + _file->read(&header[0], 4); + + // Read the entries + int count = _count ? _count : 256; + for (int i = 0; i < count; ++i) + _entries.push_back(BoltEntry(_file)); +} + +/*------------------------------------------------------------------------*/ + +BoltEntry::BoltEntry(Common::SeekableReadStream *f): _file(f) { + +} + +void BoltEntry::load() { + +} + +} // End of namespace Voyeur |