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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_SCICORE_RESOURCE_H
#define SCI_SCICORE_RESOURCE_H
#include "common/str.h"
#include "common/file.h"
#include "common/archive.h"
#include "sound/audiostream.h"
#include "sound/mixer.h" // for SoundHandle
#include "sci/decompressor.h"
namespace Common {
class ReadStream;
}
namespace Sci {
/** The maximum allowed size for a compressed or decompressed resource */
#define SCI_MAX_RESOURCE_SIZE 0x0400000
/** SCI versions */
enum SciVersion {
SCI_VERSION_AUTODETECT,
SCI_VERSION_0_EARLY, // Early KQ4, 1988 xmas card
SCI_VERSION_0_LATE, // KQ4, LSL2, LSL3, SQ3 etc
SCI_VERSION_01, // KQ1 and multilingual games (S.old.*)
SCI_VERSION_1_EGA, // EGA with parser, QFG2
SCI_VERSION_1_EARLY, // KQ5. (EGA/VGA)
SCI_VERSION_1_MIDDLE, // LSL1, JONESCD. (EGA?/VGA)
SCI_VERSION_1_LATE, // ECO1, LSL5. (EGA/VGA)
SCI_VERSION_1_1, // KQ6, ECO2
SCI_VERSION_32 // GK
};
/** Resource status types */
enum ResourceStatus {
kResStatusNoMalloc = 0,
kResStatusAllocated,
kResStatusEnqueued, /**< In the LRU queue */
kResStatusLocked /**< Allocated and in use */
};
/** Initialization result types */
enum {
SCI_ERROR_IO_ERROR = 1,
SCI_ERROR_INVALID_RESMAP_ENTRY = 2, /**< Invalid resource.map entry */
SCI_ERROR_RESMAP_NOT_FOUND = 3,
SCI_ERROR_NO_RESOURCE_FILES_FOUND = 4, /**< No resource at all was found */
SCI_ERROR_UNKNOWN_COMPRESSION = 5,
SCI_ERROR_DECOMPRESSION_ERROR = 6, /**< sanity checks failed during decompression */
SCI_ERROR_RESOURCE_TOO_BIG = 8 /**< Resource size exceeds SCI_MAX_RESOURCE_SIZE */
/* the first critical error number */
};
#define MAX_OPENED_VOLUMES 5 // Max number of simultaneously opened volumes
enum ResSourceType {
kSourceDirectory = 0,
kSourcePatch,
kSourceVolume,
kSourceExtMap,
kSourceIntMap,
kSourceAudioVolume,
kSourceExtAudioMap
};
#define SCI0_RESMAP_ENTRIES_SIZE 6
#define SCI1_RESMAP_ENTRIES_SIZE 6
#define SCI11_RESMAP_ENTRIES_SIZE 5
enum ResourceType {
kResourceTypeView = 0,
kResourceTypePic,
kResourceTypeScript,
kResourceTypeText,
kResourceTypeSound,
kResourceTypeMemory,
kResourceTypeVocab,
kResourceTypeFont,
kResourceTypeCursor,
kResourceTypePatch,
kResourceTypeBitmap,
kResourceTypePalette,
kResourceTypeCdAudio,
kResourceTypeAudio,
kResourceTypeSync,
kResourceTypeMessage,
kResourceTypeMap,
kResourceTypeHeap,
kResourceTypeAudio36,
kResourceTypeSync36,
kResourceTypeInvalid
};
const char *getResourceTypeName(ResourceType restype);
#define sci0_last_resource kResourceTypePatch
#define sci1_last_resource kResourceTypeHeap
/* Used for autodetection */
/** resource type for SCI1 resource.map file */
struct resource_index_t {
uint16 wOffset;
uint16 wSize;
};
struct ResourceSource {
ResSourceType source_type;
bool scanned;
Common::String location_name; // FIXME: Replace by FSNode ?
int volume_number;
ResourceSource *associated_map;
};
class ResourceManager;
class ResourceId {
public:
ResourceType type;
uint16 number;
uint32 tuple; // Only used for audio36 and sync36
ResourceId() : type(kResourceTypeInvalid), number(0), tuple(0) { };
ResourceId(ResourceType type_, uint16 number_, uint32 tuple_ = 0) : type(type_), number(number_), tuple(tuple_) {
if ((type < kResourceTypeView) || (type > kResourceTypeInvalid))
type = kResourceTypeInvalid;
}
ResourceId(ResourceType type_, uint16 number_, byte noun, byte verb, byte cond, byte seq) : type(type_), number(number_) {
tuple = (noun << 24) | (verb << 16) | (cond << 8) | seq;
if ((type < kResourceTypeView) || (type > kResourceTypeInvalid))
type = kResourceTypeInvalid;
}
Common::String toString() {
char buf[32];
snprintf(buf, 32, "%s.%i", getResourceTypeName(type), number);
Common::String retStr = buf;
if (tuple != 0) {
snprintf(buf, 32, "(%i, %i, %i, %i)", tuple >> 24, (tuple >> 16) & 0xff, (tuple >> 8) & 0xff, tuple & 0xff);
retStr += buf;
}
return retStr;
}
};
struct ResourceIdHash : public Common::UnaryFunction<ResourceId, uint> {
uint operator()(ResourceId val) const { return ((uint)((val.type << 16) | val.number)) ^ val.tuple; }
};
struct ResourceIdEqualTo : public Common::BinaryFunction<ResourceId, ResourceId, bool> {
bool operator()(const ResourceId &x, const ResourceId &y) const { return (x.type == y.type) && (x.number == y.number) && (x.tuple == y.tuple); }
};
struct ResourceIdLess : public Common::BinaryFunction<ResourceId, ResourceId, bool> {
bool operator()(const ResourceId &x, const ResourceId &y) const {
return (x.type < y.type) || ((x.type == y.type) && (x.number < y.number))
|| ((x.type == y.type) && (x.number == y.number) && (x.tuple < y.tuple));
}
};
/** Class for storing resources in memory */
class Resource {
friend class ResourceManager;
public:
Resource();
~Resource();
void unalloc();
// NOTE : Currently all member data has the same name and public visibility
// to let the rest of the engine compile without changes
public:
byte *data;
ResourceId id;
uint32 size;
byte *header;
uint32 headerSize;
protected:
uint32 file_offset; /**< Offset in file */
ResourceStatus status;
uint16 lockers; /**< Number of places where this resource was locked */
ResourceSource *source;
};
typedef Common::HashMap<ResourceId, Resource *, ResourceIdHash, ResourceIdEqualTo> ResourceMap;
class ResourceManager {
public:
enum ResVersion {
kResVersionUnknown,
kResVersionSci0Sci1Early,
kResVersionSci1Middle,
kResVersionSci1Late,
kResVersionSci11,
kResVersionSci32
};
// TODO: Amiga
enum ViewType {
kViewEga,
kViewVga,
kViewVga11
};
bool isVGA() const { return (_viewType == kViewVga) || (_viewType == kViewVga11); }
/**
* Returns the SCI version as detected by the resource manager
* @return SCI version
*/
SciVersion sciVersion() const { return _sciVersion; }
/**
* Creates a new SCI resource manager.
* @param version The SCI version to look for; use SCI_VERSION_AUTODETECT
* in the default case.
* @param maxMemory Maximum number of bytes to allow allocated for resources
*
* @note maxMemory will not be interpreted as a hard limit, only as a restriction
* for resources which are not explicitly locked. However, a warning will be
* issued whenever this limit is exceeded.
*/
ResourceManager(int maxMemory);
~ResourceManager();
/**
* Looks up a resource's data.
* @param id: The resource type to look for
* @param lock: non-zero iff the resource should be locked
* @return (Resource *): The resource, or NULL if it doesn't exist
* @note Locked resources are guaranteed not to have their contents freed until
* they are unlocked explicitly (by unlockResource).
*/
Resource *findResource(ResourceId id, bool lock);
/* Unlocks a previously locked resource
** (Resource *) res: The resource to free
** Returns : (void)
*/
void unlockResource(Resource *res);
/* Tests whether a resource exists
** (ResourceId) id: Id of the resource to check
** Returns : (Resource *) non-NULL if the resource exists, NULL otherwise
** This function may often be much faster than finding the resource
** and should be preferred for simple tests.
** The resource object returned is, indeed, the resource in question, but
** it should be used with care, as it may be unallocated.
** Use scir_find_resource() if you want to use the data contained in the resource.
*/
Resource *testResource(ResourceId id);
/**
* Returns a list of all resources of the specified type.
* @param type: The resource type to look for
* @param mapNumber: For audio36 and sync36, limit search to this map
* @return: The resource list
*/
Common::List<ResourceId> *listResources(ResourceType type, int mapNumber = -1);
void setAudioLanguage(int language);
protected:
ViewType _viewType; // Used to determine if the game has EGA or VGA graphics
int _maxMemory; //!< Config option: Maximum total byte number allocated
Common::List<ResourceSource *> _sources;
int _memoryLocked; //!< Amount of resource bytes in locked memory
int _memoryLRU; //!< Amount of resource bytes under LRU control
Common::List<Resource *> _LRU; //!< Last Resource Used list
ResourceMap _resMap;
Common::List<Common::File *> _volumeFiles; //!< list of opened volume files
ResourceSource *_audioMapSCI1; //!< Currently loaded audio map for SCI1
ResVersion _volVersion; //!< RESOURCE.0xx version
ResVersion _mapVersion; //!< RESOURCE.MAP version
SciVersion _sciVersion; //!< Detected SCI version */
/**
* Add a path to the resource manager's list of sources.
* @return a pointer to the added source structure, or NULL if an error occurred.
*/
ResourceSource *addPatchDir(const char *path);
ResourceSource *getVolume(ResourceSource *map, int volume_nr);
/**
* Adds a source to the resource manager's list of sources.
* @param map The map associated with this source
* @param type The source type
* @param filename The name of the source to add
* @return A pointer to the added source structure, or NULL if an error occurred.
*/
ResourceSource *addSource(ResourceSource *map, ResSourceType type, const char *filename,
int number);
/**
* Add an external (i.e., separate file) map resource to the resource manager's list of sources.
* @param file_name The name of the volume to add
* @return A pointer to the added source structure, or NULL if an error occurred.
*/
ResourceSource *addExternalMap(const char *file_name);
/**
* Add an internal (i.e., resource) map to the resource manager's list of sources.
* @param name The name of the resource to add
* @param resNr The map resource number
* @return A pointer to the added source structure, or NULL if an error occurred.
*/
ResourceSource *addInternalMap(const char *name, int resNr);
/**
* Scans newly registered resource sources for resources, earliest addition first.
* @param detected_version: Pointer to the detected version number,
* used during startup. May be NULL.
* @return One of SCI_ERROR_*.
*/
void scanNewSources();
int addAppropriateSources();
int addInternalSources();
void freeResourceSources();
/**
* Returns a string describing a ResVersion
* @param version: The resource version
* @return: The description of version
*/
const char *versionDescription(ResVersion version) const;
Common::File *getVolumeFile(const char *filename);
void loadResource(Resource *res);
bool loadPatch(Resource *res, Common::File &file);
bool loadFromPatchFile(Resource *res);
bool loadFromAudioVolumeSCI1(Resource *res, Common::File &file);
bool loadFromAudioVolumeSCI11(Resource *res, Common::File &file);
void freeOldResources();
int decompress(Resource *res, Common::File *file);
int readResourceInfo(Resource *res, Common::File *file, uint32&szPacked, ResourceCompression &compression);
void addResource(ResourceId resId, ResourceSource *src, uint32 offset, uint32 size = 0);
void removeAudioResource(ResourceId resId);
/**--- Resource map decoding functions ---*/
ResVersion detectMapVersion();
ResVersion detectVolVersion();
/**
* Reads the SCI0 resource.map file from a local directory.
* @param map The map
* @return 0 on success, an SCI_ERROR_* code otherwise
*/
int readResourceMapSCI0(ResourceSource *map);
/**
* Reads the SCI1 resource.map file from a local directory.
* @param map The map
* @return 0 on success, an SCI_ERROR_* code otherwise
*/
int readResourceMapSCI1(ResourceSource *map);
/**
* Reads SCI1.1 audio map resources
* @param map The map
* @return 0 on success, an SCI_ERROR_* code otherwise
*/
int readAudioMapSCI11(ResourceSource *map);
/**
* Reads SCI1 audio map files
* @param map The map
* @param unload Unload the map instead of loading it
* @return 0 on success, an SCI_ERROR_* code otherwise
*/
int readAudioMapSCI1(ResourceSource *map, bool unload = false);
/**--- Patch management functions ---*/
/**
* Reads patch files from a local directory.
*/
void readResourcePatches(ResourceSource *source);
void processPatch(ResourceSource *source, ResourceType restype, int resnumber);
void printLRU();
void addToLRU(Resource *res);
void removeFromLRU(Resource *res);
ResourceCompression getViewCompression();
ViewType detectViewType();
bool hasOldScriptHeader();
bool hasSci0Voc999();
bool hasSci1Voc900();
SciVersion detectSciVersion();
};
} // End of namespace Sci
#endif // SCI_SCICORE_RESOURCE_H
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