aboutsummaryrefslogtreecommitdiff
path: root/engines/sci/resource.h
blob: 584c61dbd60dc6642266ceba98ebeb9c5615dd68 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
/* 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_H
#define SCI_RESOURCE_H

#include "common/str.h"
#include "common/list.h"
#include "common/hashmap.h"

#include "sci/graphics/helpers.h"		// for ViewType
#include "sci/decompressor.h"
#include "sci/sci.h"

namespace Common {
class File;
class FSList;
class FSNode;
class WriteStream;
class SeekableReadStream;
}

namespace Sci {

enum {
	/** The maximum allowed size for a compressed or decompressed resource */
	SCI_MAX_RESOURCE_SIZE = 0x0400000
};

/** 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 */
};

enum {
	MAX_OPENED_VOLUMES = 5 ///< Max number of simultaneously opened volumes
};

enum ResourceType {
	kResourceTypeView = 0,
	kResourceTypePic,
	kResourceTypeScript,
	kResourceTypeText,
	kResourceTypeSound,
	kResourceTypeMemory,
	kResourceTypeVocab,
	kResourceTypeFont,
	kResourceTypeCursor,
	kResourceTypePatch,
	kResourceTypeBitmap,
	kResourceTypePalette,
	kResourceTypeCdAudio,
	kResourceTypeAudio,
	kResourceTypeSync,
	kResourceTypeMessage,
	kResourceTypeMap,
	kResourceTypeHeap,
	kResourceTypeAudio36,
	kResourceTypeSync36,
	kResourceTypeUnknown1, // Translation, currently unsupported
	kResourceTypeUnknown2,
	kResourceTypeRobot,
	kResourceTypeVMD,
	kResourceTypeInvalid,

	// Mac-only resources, these resource types are self-defined
	// Numbers subject to change
	kResourceTypeMacIconBarPictN = -1, // IBIN resources (icon bar, not selected)
	kResourceTypeMacIconBarPictS = -2, // IBIS resources (icon bar, selected)
	kResourceTypeMacPict = -3          // PICT resources (inventory)
};

const char *getResourceTypeName(ResourceType restype);


enum ResVersion {
	kResVersionUnknown,
	kResVersionSci0Sci1Early,
	kResVersionSci1Middle,
	kResVersionSci1Late,
	kResVersionSci11,
	kResVersionSci11Mac,
	kResVersionSci32
};

class ResourceManager;
class ResourceSource;

class ResourceId {
	static inline ResourceType fixupType(ResourceType type) {
		if (type < kResourceTypeMacPict || type > kResourceTypeInvalid)
			return kResourceTypeInvalid;
		return type;
	}

	ResourceType _type;
	uint16 _number;
	uint32 _tuple; // Only used for audio36 and sync36

public:
	ResourceId() : _type(kResourceTypeInvalid), _number(0), _tuple(0) { }

	ResourceId(ResourceType type_, uint16 number_, uint32 tuple_ = 0)
			: _type(fixupType(type_)), _number(number_), _tuple(tuple_) {
	}

	ResourceId(ResourceType type_, uint16 number_, byte noun, byte verb, byte cond, byte seq)
			: _type(fixupType(type_)), _number(number_) {
		_tuple = (noun << 24) | (verb << 16) | (cond << 8) | seq;
	}

	Common::String toString() const {
		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;
	}

	inline ResourceType getType() const { return _type; }
	inline uint16 getNumber() const { return _number; }
	inline uint32 getTuple() const { return _tuple; }

	inline uint hash() const {
		return ((uint)((_type << 16) | _number)) ^ _tuple;
	}

	bool operator==(const ResourceId &other) const {
		return (_type == other._type) && (_number == other._number) && (_tuple == other._tuple);
	}

	bool operator<(const ResourceId &other) const {
		return (_type < other._type) || ((_type == other._type) && (_number < other._number))
			    || ((_type == other._type) && (_number == other._number) && (_tuple < other._tuple));
	}
};

struct ResourceIdHash : public Common::UnaryFunction<ResourceId, uint> {
	uint operator()(ResourceId val) const { return val.hash(); }
};

/** Class for storing resources in memory */
class Resource {
	friend class ResourceManager;

	// FIXME: These 'friend' declarations are meant to be a temporary hack to
	// ease transition to the ResourceSource class system.
	friend class ResourceSource;
	friend class PatchResourceSource;
	friend class WaveResourceSource;
	friend class AudioVolumeResourceSource;
	friend class MacResourceForkResourceSource;

// NOTE : Currently most member variables lack the underscore prefix and have
// public visibility to let the rest of the engine compile without changes.
public:
	byte *data;
	uint32 size;
	byte *_header;
	uint32 _headerSize;

public:
	Resource(ResourceId id);
	~Resource();
	void unalloc();

	inline ResourceType getType() const { return _id.getType(); }
	inline uint16 getNumber() const { return _id.getNumber(); }

	/**
	 * Write the resource to the specified stream.
	 * This method is used only by the "dump" debugger command.
	 */
	void writeToStream(Common::WriteStream *stream) const;

	// FIXME: This audio specific method is a hack. After all, why should a
	// Resource have audio specific methods? But for now we keep this, as it
	// eases transition.
	uint32 getAudioCompressionType() const;

protected:
	ResourceId _id;	// TODO: _id could almost be made const, only readResourceInfo() modifies it...
	int32 _fileOffset; /**< Offset in file */
	ResourceStatus _status;
	uint16 _lockers; /**< Number of places where this resource was locked */
	ResourceSource *_source;

	bool loadPatch(Common::SeekableReadStream *file);
	bool loadFromPatchFile();
	bool loadFromWaveFile(Common::SeekableReadStream *file);
	bool loadFromAudioVolumeSCI1(Common::SeekableReadStream *file);
	bool loadFromAudioVolumeSCI11(Common::SeekableReadStream *file);
	int decompress(ResVersion volVersion, Common::SeekableReadStream *file);
	int readResourceInfo(ResVersion volVersion, Common::SeekableReadStream *file, uint32 &szPacked, ResourceCompression &compression);
};

typedef Common::HashMap<ResourceId, Resource *, ResourceIdHash> ResourceMap;

class ResourceManager {
	// FIXME: These 'friend' declarations are meant to be a temporary hack to
	// ease transition to the ResourceSource class system.
	friend class ResourceSource;
	friend class DirectoryResourceSource;
	friend class PatchResourceSource;
	friend class ExtMapResourceSource;
	friend class IntMapResourceSource;
	friend class AudioVolumeResourceSource;
	friend class ExtAudioMapResourceSource;
	friend class WaveResourceSource;
	friend class MacResourceForkResourceSource;

public:
	/**
	 * Creates a new SCI resource manager.
	 */
	ResourceManager();
	~ResourceManager();


	/**
	 * Initializes the resource manager.
	 */
	void init();

	int addAppropriateSources();
	int addAppropriateSources(const Common::FSList &fslist);	// TODO: Switch from FSList to Common::Archive?

	/**
	 * 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 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.
	 * @param res	The resource to free
	 */
	void unlockResource(Resource *res);

	/**
	 * Tests whether a resource exists.
	 *
	 * 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.
	 *
	 * @param id	Id of the resource to check
	 * @return		non-NULL if the resource exists, NULL otherwise
	 */
	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);
	int getAudioLanguage() const;
	bool isVGA() const { return (_viewType == kViewVga) || (_viewType == kViewVga11); }
	bool isAmiga32color() const { return _viewType == kViewAmiga; }
	bool isSci11Mac() const { return _volVersion == kResVersionSci11Mac; }
	ViewType getViewType() const { return _viewType; }
	const char *getMapVersionDesc() const { return versionDescription(_mapVersion); }
	const char *getVolVersionDesc() const { return versionDescription(_volVersion); }
	ResVersion getVolVersion() const { return _volVersion; }

	/**
	 * Adds the appropriate GM patch from the Sierra MIDI utility as 4.pat, without
	 * requiring the user to rename the file to 4.pat. Thus, the original Sierra
	 * archive can be extracted in the extras directory, and the GM patches can be
	 * applied per game, if applicable.
	 */
	void addNewGMPatch(SciGameId gameId);

	bool detectHires();
	// Detects, if standard font of current game includes extended characters (>0x80)
	bool detectFontExtended();
	// Detects, if SCI1.1 game uses palette merging
	bool detectForPaletteMergingForSci11();

	/**
	 * Finds the internal Sierra ID of the current game from script 0.
	 */
	Common::String findSierraGameId();

	/**
	 * Finds the location of the game object from script 0.
	 * @param addSci11ScriptOffset	Adjust the return value for SCI1.1 and newer
	 *        games. Needs to be false when the heap is accessed directly inside
	 *        findSierraGameId().
	 */
	reg_t findGameObject(bool addSci11ScriptOffset = true);

protected:
	// Maximum number of bytes to allow being 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.
	enum {
		MAX_MEMORY = 256 * 1024	// 256KB
	};

	ViewType _viewType; // Used to determine if the game has EGA or VGA graphics
	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

	/**
	 * 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 Common::String &path);

	ResourceSource *findVolume(ResourceSource *map, int volume_nr);

	/**
	 * Adds a source to the resource manager's list of sources.
	 * @param source	The new source to add
	 * @return		A pointer to the added source structure, or NULL if an error occurred.
	 */
	ResourceSource *addSource(ResourceSource *source);

	/**
	 * Add an external (i.e., separate file) map resource to the resource
	 * manager's list of sources.
	 * @param filename	 The name of the volume to add
	 * @param volume_nr  The volume number the map starts at, 0 for <SCI2.1
	 * @return		A pointer to the added source structure, or NULL if an error occurred.
	 */
	ResourceSource *addExternalMap(const Common::String &filename, int volume_nr = 0);

	ResourceSource *addExternalMap(const Common::FSNode *mapFile, int volume_nr = 0);

	/**
	 * 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 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::SeekableReadStream *getVolumeFile(ResourceSource *source);
	void loadResource(Resource *res);
	void freeOldResources();
	void addResource(ResourceId resId, ResourceSource *src, uint32 offset, uint32 size = 0);
	Resource *updateResource(ResourceId resId, ResourceSource *src, uint32 size);
	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();
	void readResourcePatchesBase36();
	void processPatch(ResourceSource *source, ResourceType resourceType, uint16 resourceNr, uint32 tuple = 0);

	/**
	 * Process wave files as patches for Audio resources.
	 */
	void readWaveAudioPatches();
	void processWavePatch(ResourceId resourceId, Common::String name);

 	/**
	 * Applies to all versions before 0.000.395 (i.e. KQ4 old, XMAS 1988 and LSL2).
	 * Old SCI versions used two word header for script blocks (first word equal
	 * to 0x82, meaning of the second one unknown). New SCI versions used one
	 * word header.
	 * Also, old SCI versions assign 120 degrees to left & right, and 60 to up
	 * and down. Later versions use an even 90 degree distribution.
	 */
	bool hasOldScriptHeader();

	void printLRU();
	void addToLRU(Resource *res);
	void removeFromLRU(Resource *res);

	ResourceCompression getViewCompression();
	ViewType detectViewType();
	bool hasSci0Voc999();
	bool hasSci1Voc900();
	void detectSciVersion();
};

class SoundResource {
public:
	struct Channel {
		byte number;
		byte poly;
		uint16 prio;
		uint16 size;
		byte *data;
		long time;
		byte prev;
	};

	struct Track {
		byte type;
		byte channelCount;
		Channel *channels;
		int16 digitalChannelNr;
		uint16 digitalSampleRate;
		uint16 digitalSampleSize;
		uint16 digitalSampleStart;
		uint16 digitalSampleEnd;
	};
public:
	SoundResource(uint32 resNumber, ResourceManager *resMan, SciVersion soundVersion);
	~SoundResource();
#if 0
	Track *getTrackByNumber(uint16 number);
#endif
	Track *getTrackByType(byte type);
	Track *getDigitalTrack();
	int getChannelFilterMask(int hardwareMask, bool wantsRhythm);
	byte getInitialVoiceCount(byte channel);

private:
	SciVersion _soundVersion;
	int _trackCount;
	Track *_tracks;
	Resource *_innerResource;
	ResourceManager *_resMan;
};

} // End of namespace Sci

#endif // SCI_RESOURCE_H