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/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SCI_RESOURCE_INTERN_H
#define SCI_RESOURCE_INTERN_H
#include "sci/resource.h"
namespace Common {
class MacResManager;
}
namespace Sci {
enum ResSourceType {
kSourceDirectory = 0,
kSourcePatch,
kSourceVolume,
kSourceExtMap,
kSourceIntMap,
kSourceAudioVolume,
kSourceExtAudioMap,
kSourceWave,
kSourceMacResourceFork,
kSourceChunk
};
class ResourceSource {
protected:
const ResSourceType _sourceType;
const Common::String _name;
public:
bool _scanned;
const Common::FSNode * const _resourceFile;
const int _volumeNumber;
protected:
ResourceSource(ResSourceType type, const Common::String &name, int volNum = 0, const Common::FSNode *resFile = 0);
public:
virtual ~ResourceSource();
ResSourceType getSourceType() const { return _sourceType; }
const Common::String &getLocationName() const { return _name; }
// Auxiliary method, used by loadResource implementations.
Common::SeekableReadStream *getVolumeFile(ResourceManager *resMan, Resource *res);
/**
* TODO: Document this
*/
virtual ResourceSource *findVolume(ResourceSource *map, int volNum) {
return NULL;
}
/**
* Scan this source for TODO.
*/
virtual void scanSource(ResourceManager *resMan) {}
/**
* Load a resource.
*/
virtual void loadResource(ResourceManager *resMan, Resource *res);
// FIXME: This audio specific method is a hack. After all, why should a
// ResourceSource or a Resource (which uses this method) have audio
// specific methods? But for now we keep this, as it eases transition.
virtual uint32 getAudioCompressionType() const { return 0; }
};
class DirectoryResourceSource : public ResourceSource {
public:
DirectoryResourceSource(const Common::String &name) : ResourceSource(kSourceDirectory, name) {}
virtual void scanSource(ResourceManager *resMan);
};
class PatchResourceSource : public ResourceSource {
public:
PatchResourceSource(const Common::String &name) : ResourceSource(kSourcePatch, name) {}
virtual void loadResource(ResourceManager *resMan, Resource *res);
};
class VolumeResourceSource : public ResourceSource {
protected:
ResourceSource * const _associatedMap;
public:
VolumeResourceSource(const Common::String &name, ResourceSource *map, int volNum, ResSourceType type = kSourceVolume)
: ResourceSource(type, name, volNum), _associatedMap(map) {
}
VolumeResourceSource(const Common::String &name, ResourceSource *map, int volNum, const Common::FSNode *resFile)
: ResourceSource(kSourceVolume, name, volNum, resFile), _associatedMap(map) {
}
virtual ResourceSource *findVolume(ResourceSource *map, int volNum) {
if (_associatedMap == map && _volumeNumber == volNum)
return this;
return NULL;
}
};
class ExtMapResourceSource : public ResourceSource {
public:
ExtMapResourceSource(const Common::String &name, int volNum, const Common::FSNode *resFile = 0)
: ResourceSource(kSourceExtMap, name, volNum, resFile) {
}
virtual void scanSource(ResourceManager *resMan);
};
class IntMapResourceSource : public ResourceSource {
public:
IntMapResourceSource(const Common::String &name, int volNum)
: ResourceSource(kSourceIntMap, name, volNum) {
}
virtual void scanSource(ResourceManager *resMan);
};
class AudioVolumeResourceSource : public VolumeResourceSource {
protected:
uint32 _audioCompressionType;
int32 *_audioCompressionOffsetMapping;
public:
AudioVolumeResourceSource(ResourceManager *resMan, const Common::String &name, ResourceSource *map, int volNum);
virtual void loadResource(ResourceManager *resMan, Resource *res);
virtual uint32 getAudioCompressionType() const;
};
class ExtAudioMapResourceSource : public ResourceSource {
public:
ExtAudioMapResourceSource(const Common::String &name, int volNum)
: ResourceSource(kSourceExtAudioMap, name, volNum) {
}
virtual void scanSource(ResourceManager *resMan);
};
class WaveResourceSource : public ResourceSource {
public:
WaveResourceSource(const Common::String &name) : ResourceSource(kSourceWave, name) {}
virtual void loadResource(ResourceManager *resMan, Resource *res);
};
/**
* Reads SCI1.1+ resources from a Mac resource fork.
*/
class MacResourceForkResourceSource : public ResourceSource {
public:
MacResourceForkResourceSource(const Common::String &name, int volNum);
~MacResourceForkResourceSource();
virtual void scanSource(ResourceManager *resMan);
virtual void loadResource(ResourceManager *resMan, Resource *res);
protected:
Common::MacResManager *_macResMan;
bool isCompressableResource(ResourceType type) const;
void decompressResource(Common::SeekableReadStream *stream, Resource *resource) const;
};
#ifdef ENABLE_SCI32
/**
* Reads resources from SCI2.1+ chunk resources
*/
class ChunkResourceSource : public ResourceSource {
public:
ChunkResourceSource(const Common::String &name, uint16 number);
virtual void scanSource(ResourceManager *resMan);
virtual void loadResource(ResourceManager *resMan, Resource *res);
protected:
uint16 _number;
struct ResourceEntry {
uint32 offset;
uint32 length;
};
Common::HashMap<ResourceId, ResourceEntry, ResourceIdHash> _resMap;
};
#endif
} // End of namespace Sci
#endif // SCI_RESOURCE_INTERN_H
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