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
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
|
/* 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.
*
* $URL$
* $Id$
*
*/
// Resource library
#include "common/util.h"
#include "common/debug.h"
#include "sci/sci.h"
#include "sci/engine/state.h"
#include "sci/engine/kernel.h"
#include "sci/tools.h"
#include "sci/resource.h"
#include "sci/vocabulary.h"
#include "sci/decompressor.h"
namespace Sci {
#undef SCI_REQUIRE_RESOURCE_FILES
//#define SCI_VERBOSE_RESMGR 1
static const char *sci_error_types[] = {
"No error",
"I/O error",
"Resource is empty (size 0)",
"resource.map entry is invalid",
"resource.map file not found",
"No resource files found",
"Unknown compression method",
"Decompression failed: Decompression buffer overflow",
"Decompression failed: Sanity check failed",
"Decompression failed: Resource too big",
"SCI version is unsupported"
};
// These are the 20 resource types supported by SCI1.1
static const char *resourceTypeNames[] = {
"view", "pic", "script", "text", "sound",
"memory", "vocab", "font", "cursor",
"patch", "bitmap", "palette", "cdaudio",
"audio", "sync", "message", "map", "heap",
"audio36", "sync36"
};
static const char *resourceTypeSuffixes[] = {
"v56", "p56", "scr", "tex", "snd",
" ", "voc", "fon", "cur", "pat",
"bit", "pal", "cda", "aud", "syn",
"msg", "map", "hep", "aud", "syn"
};
const char *getResourceTypeName(ResourceType restype) {
if (restype != kResourceTypeInvalid)
return resourceTypeNames[restype];
else
return "invalid";
}
//-- Resource main functions --
Resource::Resource() {
data = NULL;
size = 0;
file_offset = 0;
status = kResStatusNoMalloc;
lockers = 0;
source = NULL;
header = NULL;
headerSize = 0;
}
Resource::~Resource() {
delete[] data;
if (source && source->source_type == kSourcePatch)
delete source;
}
void Resource::unalloc() {
delete[] data;
data = NULL;
status = kResStatusNoMalloc;
}
//-- Resmgr helper functions --
// Resource source list management
ResourceSource *ResourceManager::addExternalMap(const char *file_name) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = kSourceExtMap;
newsrc->location_name = file_name;
newsrc->scanned = false;
newsrc->associated_map = NULL;
_sources.push_back(newsrc);
return newsrc;
}
ResourceSource *ResourceManager::addSource(ResourceSource *map, ResSourceType type, const char *filename, int number) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = type;
newsrc->scanned = false;
newsrc->location_name = filename;
newsrc->volume_number = number;
newsrc->associated_map = map;
_sources.push_back(newsrc);
return newsrc;
}
ResourceSource *ResourceManager::addPatchDir(const char *dirname) {
ResourceSource *newsrc = new ResourceSource();
newsrc->source_type = kSourceDirectory;
newsrc->scanned = false;
newsrc->location_name = dirname;
_sources.push_back(newsrc);
return 0;
}
ResourceSource *ResourceManager::getVolume(ResourceSource *map, int volume_nr) {
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
ResourceSource *src = *it;
if ((src->source_type == kSourceVolume || src->source_type == kSourceAudioVolume)
&& src->associated_map == map && src->volume_number == volume_nr)
return src;
}
return NULL;
}
// Resource manager constructors and operations
bool ResourceManager::loadPatch(Resource *res, Common::File &file) {
// We assume that the resource type matches res->type
file.seek(res->file_offset + 2, SEEK_SET);
res->data = new byte[res->size];
if (res->headerSize > 0)
res->header = new byte[res->headerSize];
if ((res->data == NULL) || ((res->headerSize > 0) && (res->header == NULL))) {
error("Can't allocate %d bytes needed for loading %s", res->size + res->headerSize, res->id.toString().c_str());
}
unsigned int really_read;
if (res->headerSize > 0) {
really_read = file.read(res->header, res->headerSize);
if (really_read != res->headerSize)
error("Read %d bytes from %s but expected %d", really_read, res->id.toString().c_str(), res->headerSize);
}
really_read = file.read(res->data, res->size);
if (really_read != res->size)
error("Read %d bytes from %s but expected %d", really_read, res->id.toString().c_str(), res->size);
res->status = kResStatusAllocated;
return true;
}
bool ResourceManager::loadFromPatchFile(Resource *res) {
Common::File file;
const char *filename = res->source->location_name.c_str();
if (file.open(filename) == false) {
warning("Failed to open patch file %s", filename);
res->unalloc();
return false;
}
return loadPatch(res, file);
}
bool ResourceManager::loadFromAudioVolumeSCI11(Resource *res, Common::File &file) {
ResourceType type = (ResourceType)(file.readByte() & 0x7f);
if (((res->id.type == kResourceTypeAudio || res->id.type == kResourceTypeAudio36) && (type != kResourceTypeAudio))
|| ((res->id.type == kResourceTypeSync || res->id.type == kResourceTypeSync36) && (type != kResourceTypeSync))) {
warning("Resource type mismatch loading %s from %s", res->id.toString().c_str(), file.getName());
res->unalloc();
return false;
}
res->headerSize = file.readByte();
if (type == kResourceTypeAudio) {
if (res->headerSize != 11 && res->headerSize != 12) {
warning("Unsupported audio header");
res->unalloc();
return false;
}
// Load sample size
file.seek(7, SEEK_CUR);
res->size = file.readUint32LE();
}
return loadPatch(res, file);
}
bool ResourceManager::loadFromAudioVolumeSCI1(Resource *res, Common::File &file) {
res->data = new byte[res->size];
if (res->data == NULL) {
error("Can't allocate %d bytes needed for loading %s", res->size, res->id.toString().c_str());
}
unsigned int really_read = file.read(res->data, res->size);
if (really_read != res->size)
warning("Read %d bytes from %s but expected %d", really_read, res->id.toString().c_str(), res->size);
res->status = kResStatusAllocated;
return true;
}
Common::File *ResourceManager::getVolumeFile(const char *filename) {
Common::List<Common::File *>::iterator it = _volumeFiles.begin();
Common::File *file;
// check if file is already opened
while (it != _volumeFiles.end()) {
file = *it;
if (scumm_stricmp(file->getName(), filename) == 0) {
// move file to top
if (it != _volumeFiles.begin()) {
_volumeFiles.erase(it);
_volumeFiles.push_front(file);
}
return file;
}
it ++;
}
// adding a new file
file = new Common::File;
if (file->open(filename)) {
if (_volumeFiles.size() == MAX_OPENED_VOLUMES) {
it = --_volumeFiles.end();
delete *it;
_volumeFiles.erase(it);
}
_volumeFiles.push_front(file);
return file;
}
// failed
delete file;
return NULL;
}
void ResourceManager::loadResource(Resource *res) {
Common::File *file;
if (res->source->source_type == kSourcePatch && loadFromPatchFile(res))
return;
// Either loading from volume or patch loading failed
file = getVolumeFile(res->source->location_name.c_str());
if (!file) {
warning("Failed to open %s", res->source->location_name.c_str());
res->unalloc();
return;
}
file->seek(res->file_offset, SEEK_SET);
if (res->source->source_type == kSourceAudioVolume) {
if (_sciVersion < SCI_VERSION_1_1)
loadFromAudioVolumeSCI1(res, *file);
else
loadFromAudioVolumeSCI11(res, *file);
} else {
int error = decompress(res, file);
if (error) {
warning("Error %d occured while reading %s from resource file: %s",
error, res->id.toString().c_str(), sci_error_types[error]);
res->unalloc();
}
}
}
Resource *ResourceManager::testResource(ResourceId id) {
if (_resMap.contains(id))
return _resMap.getVal(id);
return NULL;
}
int sci0_get_compression_method(Common::ReadStream &stream) {
uint16 compressionMethod;
stream.readUint16LE();
stream.readUint16LE();
stream.readUint16LE();
compressionMethod = stream.readUint16LE();
if (stream.err())
return SCI_ERROR_IO_ERROR;
return compressionMethod;
}
int ResourceManager::guessSciVersion() {
Common::File file;
char filename[MAXPATHLEN];
int compression;
Resource *res;
int i;
for (i = 0; i < 1000; i++) {
res = testResource(ResourceId(kResourceTypeView, i));
if (!res)
continue;
if (res->source->source_type == kSourceDirectory)
continue;
strcpy(filename, res->source->location_name.c_str());
if (!file.open(filename))
continue;
file.seek(res->file_offset, SEEK_SET);
compression = sci0_get_compression_method(file);
file.close();
if (compression == 3) {
return SCI_VERSION_01;
}
}
// Try the same thing with pics
for (i = 0; i < 1000; i++) {
res = testResource(ResourceId(kResourceTypePic, i));
if (!res)
continue;
if (res->source->source_type == kSourceDirectory)
continue;
strcpy(filename, res->source->location_name.c_str());
if (!file.open(filename))
continue;
file.seek(res->file_offset, SEEK_SET);
compression = sci0_get_compression_method(file);
file.close();
if (compression == 3) {
return SCI_VERSION_01;
}
}
return SCI_VERSION_AUTODETECT;
}
int ResourceManager::addAppropriateSources() {
ResourceSource *map;
if (!Common::File::exists("RESOURCE.MAP"))
return 0;
map = addExternalMap("RESOURCE.MAP");
Common::ArchiveMemberList files;
SearchMan.listMatchingMembers(files, "RESOURCE.0??");
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
const Common::String name = (*x)->getName();
const char *dot = strrchr(name.c_str(), '.');
int number = atoi(dot + 1);
addSource(map, kSourceVolume, name.c_str(), number);
}
addPatchDir(".");
if (Common::File::exists("MESSAGE.MAP"))
addSource(addExternalMap("MESSAGE.MAP"), kSourceVolume, "RESOURCE.MSG", 0);
return 1;
}
int ResourceManager::addInternalSources() {
Common::List<ResourceId> *resources = listResources(kResourceTypeMap);
Common::List<ResourceId>::iterator itr = resources->begin();
while (itr != resources->end()) {
ResourceSource *src = addSource(NULL, kSourceIntMap, "MAP", itr->number);
if ((itr->number == 65535) && Common::File::exists("RESOURCE.SFX"))
addSource(src, kSourceAudioVolume, "RESOURCE.SFX", 0);
else if (Common::File::exists("RESOURCE.AUD"))
addSource(src, kSourceAudioVolume, "RESOURCE.AUD", 0);
itr++;
}
return 1;
}
void ResourceManager::scanNewSources() {
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
ResourceSource *source = *it;
if (!source->scanned) {
source->scanned = true;
switch (source->source_type) {
case kSourceDirectory:
readResourcePatches(source);
break;
case kSourceExtMap:
if (_mapVersion < SCI_VERSION_1)
readResourceMapSCI0(source);
else
readResourceMapSCI1(source);
break;
case kSourceExtAudioMap:
readAudioMapSCI1(source);
break;
case kSourceIntMap:
readAudioMapSCI11(source);
break;
default:
break;
}
}
}
}
void ResourceManager::freeResourceSources() {
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it)
delete *it;
_sources.clear();
}
ResourceManager::ResourceManager(int version, int maxMemory) {
_maxMemory = maxMemory;
_memoryLocked = 0;
_memoryLRU = 0;
_LRU.clear();
_resMap.clear();
_sciVersion = version;
_audioMapSCI1 = NULL;
addAppropriateSources();
if (version != SCI_VERSION_AUTODETECT) {
_mapVersion = version;
_volVersion = version;
} else {
_mapVersion = detectMapVersion();
_volVersion = detectVolVersion();
}
debug("Using resource map version %d %s", _mapVersion, versionNames[_mapVersion]);
debug("Using volume version %d %s", _volVersion, versionNames[_volVersion]);
scanNewSources();
addInternalSources();
scanNewSources();
if (version == SCI_VERSION_AUTODETECT)
switch (_mapVersion) {
case SCI_VERSION_0:
if (testResource(ResourceId(kResourceTypeVocab, VOCAB_RESOURCE_SCI0_MAIN_VOCAB))) {
version = guessSciVersion() ? SCI_VERSION_01 : SCI_VERSION_0;
} else if (testResource(ResourceId(kResourceTypeVocab, VOCAB_RESOURCE_SCI1_MAIN_VOCAB))) {
version = guessSciVersion();
if (version != SCI_VERSION_01) {
version = testResource(ResourceId(kResourceTypeVocab, 912)) ? SCI_VERSION_0 : SCI_VERSION_01;
}
} else {
version = guessSciVersion() ? SCI_VERSION_01 : SCI_VERSION_0;
}
break;
case SCI_VERSION_01_VGA_ODD:
version = _mapVersion;
break;
case SCI_VERSION_1:
_sciVersion = version = SCI_VERSION_1;
break;
case SCI_VERSION_1_1:
// No need to handle SCI 1.1 here - it was done in resource_map.cpp
version = SCI_VERSION_1_1;
break;
default:
version = SCI_VERSION_AUTODETECT;
}
_isVGA = false;
// Determine if the game is using EGA graphics or not
if (version == SCI_VERSION_0) {
_isVGA = false; // There is no SCI0 VGA game
} else if (version >= SCI_VERSION_1_1) {
_isVGA = true; // There is no SCI11 EGA game
} else {
// SCI01 or SCI1: EGA games have the second byte of their views set
// to 0, VGA ones to non-zero
int i = 0;
while (true) {
Resource *res = findResource(ResourceId(kResourceTypeView, i), 0);
if (res) {
_isVGA = (res->data[1] != 0);
break;
}
i++;
}
}
_sciVersion = version;
// temporary version printout - should be reworked later
switch (_sciVersion) {
case SCI_VERSION_0:
debug("Resmgr: Detected SCI0");
break;
case SCI_VERSION_01:
debug("Resmgr: Detected SCI01");
break;
case SCI_VERSION_01_VGA_ODD:
debug("Resmgr: Detected SCI01VGA - Jones/CD or similar");
break;
case SCI_VERSION_1:
debug("Resmgr: Detected SCI1");
break;
case SCI_VERSION_1_1:
debug("Resmgr: Detected SCI1.1");
break;
#ifdef ENABLE_SCI32
case SCI_VERSION_32:
debug("Resmgr: Couldn't determine SCI version");
break;
#endif
default:
debug("Resmgr: Couldn't determine SCI version");
break;
}
if (_isVGA)
debug("Resmgr: Detected VGA graphic resources");
else
debug("Resmgr: Detected non-VGA/EGA graphic resources");
}
ResourceManager::~ResourceManager() {
// freeing resources
ResourceMap::iterator itr = _resMap.begin();
while (itr != _resMap.end()) {
delete itr->_value;
itr ++;
}
freeResourceSources();
_resMap.empty();
Common::List<Common::File *>::iterator it = _volumeFiles.begin();
while (it != _volumeFiles.end()) {
delete *it;
it ++;
}
}
void ResourceManager::removeFromLRU(Resource *res) {
if (res->status != kResStatusEnqueued) {
warning("Resmgr: trying to remove resource that isn't enqueued");
return;
}
_LRU.remove(res);
_memoryLRU -= res->size;
res->status = kResStatusAllocated;
}
void ResourceManager::addToLRU(Resource *res) {
if (res->status != kResStatusAllocated) {
warning("Resmgr: trying to enqueue resource with state %d", res->status);
return;
}
_LRU.push_front(res);
_memoryLRU += res->size;
#if SCI_VERBOSE_RESMGR
debug("Adding %s.%03d (%d bytes) to lru control: %d bytes total",
getResourceTypeName(res->type), res->number, res->size,
mgr->_memoryLRU);
#endif
res->status = kResStatusEnqueued;
}
void ResourceManager::printLRU() {
int mem = 0;
int entries = 0;
Common::List<Resource *>::iterator it = _LRU.begin();
Resource *res;
while (it != _LRU.end()) {
res = *it;
debug("\t%s: %d bytes", res->id.toString().c_str(), res->size);
mem += res->size;
entries ++;
it ++;
}
debug("Total: %d entries, %d bytes (mgr says %d)", entries, mem, _memoryLRU);
}
void ResourceManager::freeOldResources() {
while (_maxMemory < _memoryLRU) {
assert(!_LRU.empty());
Resource *goner = *_LRU.reverse_begin();
removeFromLRU(goner);
goner->unalloc();
#ifdef SCI_VERBOSE_RESMGR
printf("Resmgr-debug: LRU: Freeing %s.%03d (%d bytes)\n", getResourceTypeName(goner->type), goner->number, goner->size);
#endif
}
}
Common::List<ResourceId> *ResourceManager::listResources(ResourceType type, int mapNumber) {
Common::List<ResourceId> *resources = new Common::List<ResourceId>;
ResourceMap::iterator itr = _resMap.begin();
while (itr != _resMap.end()) {
if ((itr->_value->id.type == type) && ((mapNumber == -1) || (itr->_value->id.number == mapNumber)))
resources->push_back(itr->_value->id);
itr++;
}
return resources;
}
Resource *ResourceManager::findResource(ResourceId id, bool lock) {
Resource *retval = testResource(id);
if (!retval)
return NULL;
if (retval->status == kResStatusNoMalloc)
loadResource(retval);
else if (retval->status == kResStatusEnqueued)
removeFromLRU(retval);
// Unless an error occured, the resource is now either
// locked or allocated, but never queued or freed.
freeOldResources();
if (lock) {
if (retval->status == kResStatusAllocated) {
retval->status = kResStatusLocked;
retval->lockers = 0;
_memoryLocked += retval->size;
}
retval->lockers++;
} else if (retval->status != kResStatusLocked) { // Don't lock it
if (retval->status == kResStatusAllocated)
addToLRU(retval);
}
if (retval->data)
return retval;
else {
warning("Resmgr: Failed to read %s", retval->id.toString().c_str());
return NULL;
}
}
void ResourceManager::unlockResource(Resource *res) {
assert(res);
if (res->status != kResStatusLocked) {
warning("[Resmgr] Attempt to unlock unlocked resource %s", res->id.toString().c_str());
return;
}
if (!--res->lockers) { // No more lockers?
res->status = kResStatusAllocated;
_memoryLocked -= res->size;
addToLRU(res);
}
freeOldResources();
}
int ResourceManager::detectMapVersion() {
Common::File file;
byte buff[6];
ResourceSource *rsrc= 0;
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
rsrc = *it;
if (rsrc->source_type == kSourceExtMap) {
file.open(rsrc->location_name);
break;
}
}
if (file.isOpen() == false) {
warning("Failed to open resource map file");
return SCI_VERSION_AUTODETECT;
}
// detection
// SCI0 and SCI01 maps have last 6 bytes set to FF
file.seek(-4, SEEK_END);
uint32 uEnd = file.readUint32LE();
if (uEnd == 0xFFFFFFFF) {
// check if 0 or 01 - try to read resources in SCI0 format and see if exists
file.seek(0, SEEK_SET);
while (file.read(buff, 6) == 6 && !(buff[0] == 0xFF && buff[1] == 0xFF && buff[2] == 0xFF)) {
if (getVolume(rsrc, (buff[5] & 0xFC) >> 2) == NULL)
return SCI_VERSION_01_VGA_ODD;
}
return SCI_VERSION_0;
}
// SCI1 and SCI1.1 maps consist of a fixed 3-byte header, a directory list (3-bytes each) that has one entry
// of id FFh and points to EOF. The actual entries have 6-bytes on SCI1 and 5-bytes on SCI1.1
byte directoryType = 0;
uint16 directoryOffset = 0;
uint16 lastDirectoryOffset = 0;
uint16 directorySize = 0;
int mapDetected = 0;
file.seek(0, SEEK_SET);
while (!file.eos()) {
directoryType = file.readByte();
directoryOffset = file.readUint16LE();
if ((directoryType < 0x80) || ((directoryType > 0xA0) && (directoryType != 0xFF)))
break;
// Offset is above file size? -> definitely not SCI1/SCI1.1
if (directoryOffset > file.size())
break;
if (lastDirectoryOffset) {
directorySize = directoryOffset - lastDirectoryOffset;
if ((directorySize % 5) && (directorySize % 6 == 0))
mapDetected = SCI_VERSION_1;
if ((directorySize % 5 == 0) && (directorySize % 6))
mapDetected = SCI_VERSION_1_1;
}
if (directoryType==0xFF) {
// FFh entry needs to point to EOF
if (directoryOffset != file.size())
break;
if (mapDetected)
return mapDetected;
return SCI_VERSION_1;
}
lastDirectoryOffset = directoryOffset;
}
#ifdef ENABLE_SCI32
// late SCI1.1 and SCI32 maps have last directory entry set to 0xFF
// offset set to filesize and 4 more bytes
// TODO/FIXME: This code was not updated in r43000, which changed the behavior of this
// function a lot. To make it compile again "off" was changed to the newly introduced
// "lastDirectoryOffset". This is probably not the correct fix, since before r43000
// the loop above could not prematurely terminate and thus this would always check the
// last directory entry instead of the last checked directory entry.
file.seek(lastDirectoryOffset - 7, SEEK_SET);
if (file.readByte() == 0xFF && file.readUint16LE() == file.size())
return SCI_VERSION_32; // TODO : check if there is a difference between these maps
#endif
return SCI_VERSION_AUTODETECT;
}
int ResourceManager::detectVolVersion() {
Common::File file;
ResourceSource *rsrc;
for (Common::List<ResourceSource *>::iterator it = _sources.begin(); it != _sources.end(); ++it) {
rsrc = *it;
if (rsrc->source_type == kSourceVolume) {
file.open(rsrc->location_name);
break;
}
}
if (file.isOpen() == false) {
warning("Failed to open volume file");
return SCI_VERSION_AUTODETECT;
}
// SCI0 volume format: {wResId wPacked+4 wUnpacked wCompression} = 8 bytes
// SCI1 volume format: {bResType wResNumber wPacked+4 wUnpacked wCompression} = 9 bytes
// SCI1.1 volume format: {bResType wResNumber wPacked wUnpacked wCompression} = 9 bytes
// SCI32 volume format : {bResType wResNumber dwPacked dwUnpacked wCompression} = 13 bytes
// Try to parse volume with SCI0 scheme to see if it make sense
// Checking 1MB of data should be enough to determine the version
uint16 resId, wCompression;
uint32 dwPacked, dwUnpacked;
int curVersion = SCI_VERSION_0;
bool failed = false;
// Check for SCI0, SCI1, SCI1.1 and SCI32 v2 (Gabriel Knight 1 CD) formats
while (!file.eos() && file.pos() < 0x100000) {
if (curVersion > SCI_VERSION_0)
file.readByte();
resId = file.readUint16LE();
dwPacked = (curVersion < SCI_VERSION_32) ? file.readUint16LE() : file.readUint32LE();
dwUnpacked = (curVersion < SCI_VERSION_32) ? file.readUint16LE() : file.readUint32LE();
wCompression = (curVersion < SCI_VERSION_32) ? file.readUint16LE() : file.readUint32LE();
if (file.eos())
return curVersion;
int chk = (curVersion == SCI_VERSION_0) ? 4 : 20;
int offs = curVersion < SCI_VERSION_1_1 ? 4 : 0;
if ((curVersion < SCI_VERSION_32 && wCompression > chk)
|| (curVersion == SCI_VERSION_32 && wCompression != 0 && wCompression != 32)
|| (wCompression == 0 && dwPacked != dwUnpacked + offs)
|| (dwUnpacked < dwPacked - offs)) {
// Retry with a newer SCI version
if (curVersion == SCI_VERSION_0) {
curVersion = SCI_VERSION_1;
} else if (curVersion == SCI_VERSION_1) {
curVersion = SCI_VERSION_1_1;
} else if (curVersion == SCI_VERSION_1_1) {
curVersion = SCI_VERSION_32;
} else {
// All version checks failed, exit loop
failed = true;
break;
}
file.seek(0, SEEK_SET);
continue;
}
if (curVersion < SCI_VERSION_1_1)
file.seek(dwPacked - 4, SEEK_CUR);
else if (curVersion == SCI_VERSION_1_1)
file.seek((9 + dwPacked) % 2 ? dwPacked + 1 : dwPacked, SEEK_CUR);
else if (curVersion == SCI_VERSION_32)
file.seek(dwPacked, SEEK_CUR);//(9 + wPacked) % 2 ? wPacked + 1 : wPacked, SEEK_CUR);
}
if (!failed)
return curVersion;
// Failed to detect volume version
return SCI_VERSION_AUTODETECT;
}
// version-agnostic patch application
void ResourceManager::processPatch(ResourceSource *source, ResourceType restype, int resnumber) {
Common::File file;
Resource *newrsc;
ResourceId resId = ResourceId(restype, resnumber);
byte patchtype, patch_data_offset;
int fsize;
if (resnumber == -1)
return;
if (!file.open(source->location_name)) {
perror("""__FILE__"": (""__LINE__""): failed to open");
return;
}
fsize = file.size();
if (fsize < 3) {
debug("Patching %s failed - file too small", source->location_name.c_str());
return;
}
patchtype = file.readByte() & 0x7F;
patch_data_offset = file.readByte();
if (patchtype != restype) {
debug("Patching %s failed - resource type mismatch", source->location_name.c_str());
return;
}
if (patch_data_offset + 2 >= fsize) {
debug("Patching %s failed - patch starting at offset %d can't be in file of size %d",
source->location_name.c_str(), patch_data_offset + 2, fsize);
return;
}
// Prepare destination, if neccessary
if (_resMap.contains(resId) == false) {
newrsc = new Resource;
_resMap.setVal(resId, newrsc);
} else
newrsc = _resMap.getVal(resId);
// Overwrite everything, because we're patching
newrsc->id = resId;
newrsc->status = kResStatusNoMalloc;
newrsc->source = source;
newrsc->size = fsize - patch_data_offset - 2;
newrsc->headerSize = patch_data_offset;
newrsc->file_offset = 0;
debug("Patching %s - OK", source->location_name.c_str());
}
void ResourceManager::readResourcePatches(ResourceSource *source) {
// Note: since some SCI1 games(KQ5 floppy, SQ4) might use SCI0 naming scheme for patch files
// this function tries to read patch file with any supported naming scheme,
// regardless of _sciVersion value
Common::String mask, name;
Common::ArchiveMemberList files;
int number;
const char *szResType;
ResourceSource *psrcPatch;
bool bAdd;
for (int i = kResourceTypeView; i < kResourceTypeAudio36; i ++) {
files.clear();
szResType = getResourceTypeName((ResourceType)i);
// SCI0 naming - type.nnn
mask = szResType;
mask += ".???";
SearchMan.listMatchingMembers(files, mask);
// SCI1 and later naming - nnn.typ
mask = "*.";
mask += resourceTypeSuffixes[i];
SearchMan.listMatchingMembers(files, mask);
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); x++) {
bAdd = false;
name = (*x)->getName();
// SCI1 scheme
if (isdigit(name[0])) {
number = atoi(name.c_str());
bAdd = true;
} else {
// SCI0 scheme
int resname_len = strlen(szResType);
if (scumm_strnicmp(name.c_str(), szResType, resname_len) == 0
&& !isalpha(name[resname_len + 1])) {
number = atoi(name.c_str() + resname_len + 1);
bAdd = true;
}
}
if (bAdd) {
psrcPatch = new ResourceSource;
psrcPatch->source_type = kSourcePatch;
psrcPatch->location_name = name;
processPatch(psrcPatch, (ResourceType)i, number);
}
}
}
}
int ResourceManager::readResourceMapSCI0(ResourceSource *map) {
Common::File file;
Resource *res;
ResourceType type;
uint16 number, id;
uint32 offset;
if (!file.open(map->location_name))
return SCI_ERROR_RESMAP_NOT_FOUND;
file.seek(0, SEEK_SET);
byte bMask = 0xFC;
// FIXME: The code above seems to give correct results for Jones
//byte bMask = _mapVersion == SCI_VERSION_01_VGA_ODD ? 0xF0 : 0xFC;
byte bShift = _mapVersion == SCI_VERSION_01_VGA_ODD ? 28 : 26;
do {
id = file.readUint16LE();
offset = file.readUint32LE();
if (file.ioFailed()) {
warning("Error while reading %s: ", map->location_name.c_str());
perror("");
return SCI_ERROR_RESMAP_NOT_FOUND;
}
if (offset == 0xFFFFFFFF)
break;
type = (ResourceType)(id >> 11);
number = id & 0x7FF;
ResourceId resId = ResourceId(type, number);
// adding a new resource
if (_resMap.contains(resId) == false) {
res = new Resource;
res->file_offset = offset & (((~bMask) << 24) | 0xFFFFFF);
res->id = resId;
res->source = getVolume(map, offset >> bShift);
if (!res->source) {
warning("Could not get volume for resource %d, VolumeID %d\n", id, offset >> bShift);
}
_resMap.setVal(resId, res);
}
} while (!file.eos());
return 0;
}
int ResourceManager::readResourceMapSCI1(ResourceSource *map) {
Common::File file;
Resource *res;
if (!file.open(map->location_name))
return SCI_ERROR_RESMAP_NOT_FOUND;
resource_index_t resMap[32];
memset(resMap, 0, sizeof(resource_index_t) * 32);
byte type = 0, prevtype = 0;
byte nEntrySize = _mapVersion == SCI_VERSION_1_1 ? SCI11_RESMAP_ENTRIES_SIZE : SCI1_RESMAP_ENTRIES_SIZE;
ResourceId resId;
// Read resource type and offsets to resource offsets block from .MAP file
// The last entry has type=0xFF (0x1F) and offset equals to map file length
do {
type = file.readByte() & 0x1F;
resMap[type].wOffset = file.readUint16LE();
resMap[prevtype].wSize = (resMap[type].wOffset
- resMap[prevtype].wOffset) / nEntrySize;
prevtype = type;
} while (type != 0x1F); // the last entry is FF
// reading each type's offsets
uint32 off = 0;
for (type = 0; type < 32; type++) {
if (resMap[type].wOffset == 0) // this resource does not exist in map
continue;
file.seek(resMap[type].wOffset);
for (int i = 0; i < resMap[type].wSize; i++) {
uint16 number = file.readUint16LE();
int volume_nr = 0;
if (_mapVersion == SCI_VERSION_1_1) {
// offset stored in 3 bytes
off = file.readUint16LE();
off |= file.readByte() << 16;
off <<= 1;
} else {
// offset/volume stored in 4 bytes
off = file.readUint32LE();
if (_mapVersion < SCI_VERSION_1_1) {
volume_nr = off >> 28; // most significant 4 bits
off &= 0x0FFFFFFF; // least significant 28 bits
} else {
// in SCI32 it's a plain offset
}
}
if (file.ioFailed()) {
warning("Error while reading %s: ", map->location_name.c_str());
perror("");
return SCI_ERROR_RESMAP_NOT_FOUND;
}
resId = ResourceId((ResourceType)type, number);
// adding new resource only if it does not exist
if (_resMap.contains(resId) == false) {
res = new Resource;
_resMap.setVal(resId, res);
res->id = resId;
res->source = getVolume(map, volume_nr);
res->file_offset = off;
}
}
}
return 0;
}
void ResourceManager::addResource(ResourceId resId, ResourceSource *src, uint32 offset, uint32 size) {
// Adding new resource only if it does not exist
if (_resMap.contains(resId) == false) {
Resource *res = new Resource;
_resMap.setVal(resId, res);
res->id = resId;
res->source = src;
res->file_offset = offset;
res->size = size;
}
}
void ResourceManager::removeAudioResource(ResourceId resId) {
// Remove resource, unless it was loaded from a patch
if (_resMap.contains(resId)) {
Resource *res = _resMap.getVal(resId);
if (res->source->source_type == kSourceAudioVolume) {
if (res->lockers == 0) {
_resMap.erase(resId);
delete res;
} else {
warning("Failed to remove resource %s (still in use)", resId.toString().c_str());
}
}
}
}
// Early SCI1.1 65535.MAP structure (uses RESOURCE.AUD):
// =========
// 6-byte entries:
// w nEntry
// dw offset
// Late SCI1.1 65535.MAP structure (uses RESOURCE.SFX):
// =========
// 5-byte entries:
// w nEntry
// tb offset (cumulative)
// Early SCI1.1 MAP structure:
// ===============
// 10-byte entries:
// b noun
// b verb
// b cond
// b seq
// dw offset
// w syncSize + syncAscSize
// Late SCI1.1 MAP structure:
// ===============
// Header:
// dw baseOffset
// Followed by 7 or 11-byte entries:
// b noun
// b verb
// b cond
// b seq
// tb cOffset (cumulative offset)
// w syncSize (iff seq has bit 7 set)
// w syncAscSize (iff seq has bit 6 set)
int ResourceManager::readAudioMapSCI11(ResourceSource *map) {
bool isEarly = true;
uint32 offset = 0;
Resource *mapRes = findResource(ResourceId(kResourceTypeMap, map->volume_number), false);
if (!mapRes) {
warning("Failed to open %i.MAP", map->volume_number);
return SCI_ERROR_RESMAP_NOT_FOUND;
}
ResourceSource *src = getVolume(map, 0);
if (!src)
return SCI_ERROR_NO_RESOURCE_FILES_FOUND;
byte *ptr = mapRes->data;
if (map->volume_number == 65535) {
// Heuristic to detect late SCI1.1 map format
if ((mapRes->size >= 6) && (ptr[mapRes->size - 6] != 0xff))
isEarly = false;
while (ptr < mapRes->data + mapRes->size) {
uint16 n = READ_LE_UINT16(ptr);
ptr += 2;
if (n == 0xffff)
break;
if (isEarly) {
offset = READ_LE_UINT32(ptr);
ptr += 4;
} else {
offset += READ_LE_UINT24(ptr);
ptr += 3;
}
addResource(ResourceId(kResourceTypeAudio, n), src, offset);
}
} else {
// Heuristic to detect late SCI1.1 map format
if ((mapRes->size >= 11) && (ptr[mapRes->size - 11] == 0xff))
isEarly = false;
if (!isEarly) {
offset = READ_LE_UINT32(ptr);
ptr += 4;
}
while (ptr < mapRes->data + mapRes->size) {
uint32 n = READ_BE_UINT32(ptr);
int syncSize = 0;
ptr += 4;
if (n == 0xffffffff)
break;
if (isEarly) {
offset = READ_LE_UINT32(ptr);
ptr += 4;
} else {
offset += READ_LE_UINT24(ptr);
ptr += 3;
}
if (isEarly || (n & 0x80)) {
syncSize = READ_LE_UINT16(ptr);
ptr += 2;
if (syncSize > 0)
addResource(ResourceId(kResourceTypeSync36, map->volume_number, n & 0xffffff3f), src, offset, syncSize);
}
if (n & 0x40) {
syncSize += READ_LE_UINT16(ptr);
ptr += 2;
}
addResource(ResourceId(kResourceTypeAudio36, map->volume_number, n & 0xffffff3f), src, offset + syncSize);
}
}
return 0;
}
// AUDIOnnn.MAP contains 10-byte entries:
// w nEntry
// dw offset+volume (as in resource.map)
// dw size
// ending with 10 0xFFs
int ResourceManager::readAudioMapSCI1(ResourceSource *map, bool unload) {
Common::File file;
if (!file.open(map->location_name))
return SCI_ERROR_RESMAP_NOT_FOUND;
while (1) {
uint16 n = file.readUint16LE();
uint32 offset = file.readUint32LE();
uint32 size = file.readUint32LE();
if (file.ioFailed()) {
warning("Error while reading %s", map->location_name.c_str());
return SCI_ERROR_RESMAP_NOT_FOUND;
}
if (n == 0xffff)
break;
byte volume_nr = offset >> 28; // most significant 4 bits
offset &= 0x0fffffff; // least significant 28 bits
ResourceSource *src = getVolume(map, volume_nr);
if (src) {
if (unload)
removeAudioResource(ResourceId(kResourceTypeAudio, n));
else
addResource(ResourceId(kResourceTypeAudio, n), src, offset, size);
} else {
warning("Failed to find audio volume %i", volume_nr);
}
}
return 0;
}
void ResourceManager::setAudioLanguage(int language) {
if (_audioMapSCI1) {
if (_audioMapSCI1->volume_number == language) {
// This language is already loaded
return;
}
// We already have a map loaded, so we unload it first
readAudioMapSCI1(_audioMapSCI1, true);
// Remove all volumes that use this map from the source list
Common::List<ResourceSource *>::iterator it = _sources.begin();
while (it != _sources.end()) {
ResourceSource *src = *it;
if (src->associated_map == _audioMapSCI1) {
it = _sources.erase(it);
delete src;
} else {
++it;
}
}
// Remove the map itself from the source list
_sources.remove(_audioMapSCI1);
delete _audioMapSCI1;
_audioMapSCI1 = NULL;
}
char filename[9];
snprintf(filename, 9, "AUDIO%03d", language);
Common::String fullname = Common::String(filename) + ".MAP";
if (!Common::File::exists(fullname)) {
warning("No audio map found for language %i", language);
return;
}
_audioMapSCI1 = addSource(NULL, kSourceExtAudioMap, fullname.c_str(), language);
// Search for audio volumes for this language and add them to the source list
Common::ArchiveMemberList files;
SearchMan.listMatchingMembers(files, Common::String(filename) + ".0??");
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
const Common::String name = (*x)->getName();
const char *dot = strrchr(name.c_str(), '.');
int number = atoi(dot + 1);
addSource(_audioMapSCI1, kSourceAudioVolume, name.c_str(), number);
}
scanNewSources();
}
int ResourceManager::readResourceInfo(Resource *res, Common::File *file,
uint32&szPacked, ResourceCompression &compression) {
// SCI0 volume format: {wResId wPacked+4 wUnpacked wCompression} = 8 bytes
// SCI1 volume format: {bResType wResNumber wPacked+4 wUnpacked wCompression} = 9 bytes
// SCI1.1 volume format: {bResType wResNumber wPacked wUnpacked wCompression} = 9 bytes
// SCI32 volume format : {bResType wResNumber dwPacked dwUnpacked wCompression} = 13 bytes
uint16 w, number, szUnpacked;
uint32 wCompression;
ResourceType type;
switch (_volVersion) {
case SCI_VERSION_0:
w = file->readUint16LE();
type = (ResourceType)(w >> 11);
number = w & 0x7FF;
szPacked = file->readUint16LE() - 4;
szUnpacked = file->readUint16LE();
wCompression = file->readUint16LE();
break;
case SCI_VERSION_1:
type = (ResourceType)(file->readByte() & 0x7F);
number = file->readUint16LE();
szPacked = file->readUint16LE() - 4;
szUnpacked = file->readUint16LE();
wCompression = file->readUint16LE();
break;
case SCI_VERSION_1_1:
type = (ResourceType)(file->readByte() & 0x7F);
number = file->readUint16LE();
szPacked = file->readUint16LE();
szUnpacked = file->readUint16LE();
wCompression = file->readUint16LE();
break;
#ifdef ENABLE_SCI32
case SCI_VERSION_32:
type = (ResourceType)(file->readByte() &0x7F);
number = file->readUint16LE();
szPacked = file->readUint32LE();
szUnpacked = file->readUint32LE();
wCompression = file->readUint16LE();
break;
#endif
default:
return SCI_ERROR_INVALID_RESMAP_ENTRY;
}
// check if there were errors while reading
if (file->ioFailed())
return SCI_ERROR_IO_ERROR;
res->id = ResourceId(type, number);
res->size = szUnpacked;
// checking compression method
switch (wCompression) {
case 0:
compression = kCompNone;
break;
case 1:
compression = (_sciVersion == SCI_VERSION_0) ? kCompLZW : kCompHuffman;
break;
case 2:
compression = (_sciVersion == SCI_VERSION_0) ? kCompHuffman : kCompLZW1;
break;
case 3:
compression = kCompLZW1View;
break;
case 4:
compression = kCompLZW1Pic;
break;
case 18:
case 19:
case 20:
compression = kCompDCL;
break;
#ifdef ENABLE_SCI32
case 32:
compression = kCompSTACpack;
break;
#endif
default:
compression = kCompUnknown;
}
return compression == kCompUnknown ? SCI_ERROR_UNKNOWN_COMPRESSION : 0;
}
int ResourceManager::decompress(Resource *res, Common::File *file) {
int error;
uint32 szPacked = 0;
ResourceCompression compression = kCompUnknown;
// fill resource info
error = readResourceInfo(res, file, szPacked, compression);
if (error)
return error;
// getting a decompressor
Decompressor *dec = NULL;
switch (compression) {
case kCompNone:
dec = new Decompressor;
break;
case kCompHuffman:
dec = new DecompressorHuffman;
break;
case kCompLZW:
case kCompLZW1:
case kCompLZW1View:
case kCompLZW1Pic:
dec = new DecompressorLZW(compression);
break;
case kCompDCL:
dec = new DecompressorDCL;
break;
#ifdef ENABLE_SCI32
case kCompSTACpack:
dec = new DecompressorLZS;
break;
#endif
default:
warning("Resource %s: Compression method %d not supported", res->id.toString().c_str(), compression);
return SCI_ERROR_UNKNOWN_COMPRESSION;
}
res->data = new byte[res->size];
res->status = kResStatusAllocated;
error = res->data ? dec->unpack(file, res->data, szPacked, res->size) : SCI_ERROR_RESOURCE_TOO_BIG;
if (error)
res->unalloc();
delete dec;
return error;
}
} // End of namespace Sci
|