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31618a13f5
This is essentially same ads attempting to open the file in question but without incurring I/O cost.
137 lines
4.4 KiB
C++
137 lines
4.4 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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#ifndef NEVERHOOD_RESOURCEMAN_H
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#define NEVERHOOD_RESOURCEMAN_H
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#include "common/array.h"
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#include "common/file.h"
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#include "common/hashmap.h"
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#include "neverhood/neverhood.h"
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#include "neverhood/blbarchive.h"
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#include "neverhood/nhcarchive.h"
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namespace Neverhood {
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class ResourceMan;
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struct ResourceHandle;
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class ResourceFileEntry {
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private:
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int resourceHandle;
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BlbArchive *archive;
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BlbArchiveEntry *archiveEntry;
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NhcArchive *nhcArchive;
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NhcArchiveEntry *nhcArchiveEntry;
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friend struct ResourceHandle;
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friend class ResourceMan;
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public:
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ResourceFileEntry() : resourceHandle(-1), archive(nullptr), archiveEntry(nullptr), nhcArchive(nullptr), nhcArchiveEntry(nullptr) {}
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};
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struct Resource {
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ResourceFileEntry *entry;
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int useRefCount;
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};
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struct ResourceData {
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byte *data;
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int dataRefCount;
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ResourceData() : data(NULL), dataRefCount() {}
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};
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struct ResourceHandle {
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friend class ResourceMan;
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public:
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ResourceHandle();
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~ResourceHandle();
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bool isValid() const { return _resourceFileEntry != NULL
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&& (_resourceFileEntry->archiveEntry != NULL
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|| (_resourceFileEntry->nhcArchiveEntry != NULL && _resourceFileEntry->nhcArchiveEntry->isNormal())); }
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byte type() const {
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if (_resourceFileEntry == NULL)
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return 0;
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if (_resourceFileEntry->nhcArchiveEntry != NULL && _resourceFileEntry->nhcArchiveEntry->isNormal())
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return _resourceFileEntry->nhcArchiveEntry->type;
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if (_resourceFileEntry->archiveEntry != NULL)
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return _resourceFileEntry->archiveEntry->type;
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return 0;
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}
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const byte *data() const { return _data; }
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uint32 size() const {
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if (_resourceFileEntry == NULL)
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return 0;
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if (_resourceFileEntry->nhcArchiveEntry != NULL && _resourceFileEntry->nhcArchiveEntry->isNormal())
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return _resourceFileEntry->nhcArchiveEntry->size;
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if (_resourceFileEntry->archiveEntry != NULL)
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return _resourceFileEntry->archiveEntry->size;
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return 0;
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}
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const byte *extData() const { return _extData; }
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uint32 fileHash() const {
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if (_resourceFileEntry == NULL)
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return 0;
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if (_resourceFileEntry->nhcArchiveEntry != NULL && _resourceFileEntry->nhcArchiveEntry->isNormal())
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return _resourceFileEntry->nhcArchiveEntry->fileHash;
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if (_resourceFileEntry->archiveEntry != NULL)
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return _resourceFileEntry->archiveEntry->fileHash;
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return 0;
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}
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protected:
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ResourceFileEntry *_resourceFileEntry;
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const byte *_extData;
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const byte *_data;
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};
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class ResourceMan {
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public:
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ResourceMan();
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~ResourceMan();
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void addArchive(const Common::String &filename, bool isOptional = false);
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bool addNhcArchive(const Common::String &filename);
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ResourceFileEntry *findEntrySimple(uint32 fileHash);
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ResourceFileEntry *findEntry(uint32 fileHash, ResourceFileEntry **firstEntry = NULL);
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Common::SeekableReadStream *createStream(uint32 fileHash);
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Common::SeekableReadStream *createNhcStream(uint32 fileHash, uint32 type);
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bool nhcExists(uint32 fileHash, uint32 type);
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bool exists(uint32 fileHash);
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const ResourceFileEntry& getEntry(uint index) { return _entries[index]; }
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uint getEntryCount() { return _entries.size(); }
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void queryResource(uint32 fileHash, ResourceHandle &resourceHandle);
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void loadResource(ResourceHandle &resourceHandle, bool applyResourceFixes);
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void unloadResource(ResourceHandle &resourceHandle);
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void purgeResources();
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protected:
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typedef Common::HashMap<uint32, ResourceFileEntry> EntriesMap;
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Common::Array<BlbArchive*> _archives;
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Common::Array<NhcArchive*> _nhcArchives;
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EntriesMap _entries;
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Common::HashMap<uint32, ResourceData*> _data;
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Common::Array<Resource*> _resources;
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};
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} // End of namespace Neverhood
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#endif /* NEVERHOOD_RESOURCEMAN_H */
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