aboutsummaryrefslogtreecommitdiff
path: root/queen/resource.cpp
blob: c7994b4be0256063af511bcfe372c576e1d268ac (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
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003 The ScummVM project
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 */

#include "queen/queen.h"
#include "queen/resource.h"

namespace Queen {

#define	DEMO_JAS_VERSION_OFFSET	0x119A8
#define JAS_VERSION_OFFSET	0x12484

static const char *tableFilename = "queen.tbl";

const GameVersion Resource::_gameVersions[] = {
	{ "PEM10", true,  false, 0x00000008 },
	{ "CEM10", false, false, 0x0000584E },
	{ "PFM10", true,  false, 0x0002CD93 },
	{ "CFM10", false, false, 0x00032585 },
	{ "PGM10", true,  false, 0x00059ACA },
	{ "CGM10", false, false, 0x0005F2A7 },
	{ "PIM10", true,  false, 0x000866B1 },
	{ "CIM10", false, false, 0x0008BEE2 },
	{ "PE100", true,  true,  0x000B343C },
	{ "PE100", true,  true,  0x000B40F5 }
};

Resource::Resource(const Common::String &datafilePath, const char *datafileName)
	: _JAS2Pos(0), _datafilePath(datafilePath), _resourceEntries(0), _resourceTable(NULL) {

	_resourceFile = new File();
	_resourceFile->open(datafileName, _datafilePath);
	if (_resourceFile->isOpen() == false)
		error("Could not open resource file '%s%s'", _datafilePath.c_str(), datafileName);
	
	if (_resourceFile->readUint32BE() == 'QTBL') {
		readTableCompResource();
	} else {
		_gameVersion = detectGameVersion(_resourceFile->size());
	
		if (!readTableFile()) {
			//check if it is the english floppy version, for which we have a hardcoded version of the tables
			if (!strcmp(_gameVersion->versionString, _gameVersions[VER_ENG_FLOPPY].versionString)) {
				_gameVersion = &_gameVersions[VER_ENG_FLOPPY];
				_resourceEntries = 1076;
				_resourceTable = _resourceTablePEM10;
			} else {
				error("Couldn't find tablefile '%s%s'",  _datafilePath.c_str(), tableFilename);
			}
		}
	}
	if (strcmp(_gameVersion->versionString, JASVersion()))
		error("Verifying game version failed! (expected: '%s', found: '%s')", _gameVersion->versionString, JASVersion());

	debug(5, "Detected game version: %s, which has %d resource entries", _gameVersion->versionString, _resourceEntries);

	_JAS2Ptr = (char *)loadFile("QUEEN2.JAS", 0);
}

Resource::~Resource() {
	_resourceFile->close();
	if(_resourceTable != _resourceTablePEM10) 
		delete[] _resourceTable;
	delete[] _JAS2Ptr;
}

int32 Resource::resourceIndex(const char *filename) {

	char entryName[14];
	char *ptr = entryName;
	
	assert(strlen(filename));
	strcpy(entryName, filename);
	do
		*ptr = toupper(*ptr);
	while (*ptr++);

	uint32 low = 0;
	uint32 high = _resourceEntries - 1;

	if (!strcmp(entryName, _resourceTable[low].filename))
		return low;
	if (!strcmp(entryName, _resourceTable[high].filename))
		return high;
	

	//Use simple binary search to locate file
	for(;;) {
		uint32 cur = (low + high) / 2;
		int32 diff = strcmp(entryName, _resourceTable[cur].filename);

		if (!diff)
			return cur;

		if ((cur == low) || (cur == high))
			break;

		if (diff > 0)
			low = cur;
		else
			high = cur;
	}

	warning("Couldn't find file '%s'", entryName);
	return -1;
}

char *Resource::getJAS2Line() {
        char *startOfLine = _JAS2Ptr + _JAS2Pos;
        char *curPos = startOfLine;
        while (*curPos++ != 0xd) ;
        *(curPos-1) = '\0';     // '\r'
        *curPos = '\0';         // '\n'
        _JAS2Pos = (curPos - _JAS2Ptr) + 1;
        return startOfLine;
}

uint32 Resource::fileSize(const char *filename) {
	return _resourceTable[resourceIndex(filename)].size;
}

uint32 Resource::fileOffset(const char *filename) {
	return _resourceTable[resourceIndex(filename)].offset;
}

uint8 *Resource::loadFile(const char *filename, uint32 skipBytes, byte *dstBuf) {
	uint32 size = fileSize(filename);
	if (dstBuf == NULL) {
		dstBuf = new byte[size];
	}
	// skip 'skipBytes' bytes (useful for headers)
	_resourceFile->seek(fileOffset(filename) + skipBytes, SEEK_SET);
	_resourceFile->read(dstBuf, size - skipBytes);
	return dstBuf;
}

bool Resource::exists(const char *filename) {
	return resourceIndex(filename) >= 0;
}

const char *Resource::JASVersion() {
	static char versionStr[6];
	if (_gameVersion->isDemo)
		_resourceFile->seek(fileOffset("QUEEN.JAS") + DEMO_JAS_VERSION_OFFSET, SEEK_SET );
	else
		_resourceFile->seek(fileOffset("QUEEN.JAS") + JAS_VERSION_OFFSET, SEEK_SET);
	_resourceFile->read(versionStr, 6);
	return versionStr;
}

bool Resource::isDemo() {
	return _gameVersion->isDemo;
}

bool Resource::isFloppy() {
	return _gameVersion->isFloppy;
}

Language Resource::getLanguage() {
	switch (_gameVersion->versionString[1]) {
		case 'E':
			return ENGLISH;
		case 'G':
			return GERMAN;
		case 'F':
			return FRENCH;
		case 'I':
			return ITALIAN;
		default:
			return ENGLISH;
	}
}

const GameVersion *Resource::detectGameVersion(uint32 dataFilesize) {
	const GameVersion *pgv = NULL;
	//detect game version based on resource file size.
	//we try to verify that it is indeed the version we think it is later on
	switch(dataFilesize) {
	case 3724538:
		pgv = &_gameVersions[VER_DEMO_PCGAMES];
		break;
	case 3732177:
		pgv = &_gameVersions[VER_DEMO];
		break;
	case 22677657:
		pgv = &_gameVersions[VER_ENG_FLOPPY];
		break;
	case 190787021:
		pgv = &_gameVersions[VER_ENG_TALKIE];
		break;
	case 22157304: // computed from FREH_FAT.H
		pgv = &_gameVersions[VER_FRE_FLOPPY];
		break;
	case 186689095:
		pgv = &_gameVersions[VER_FRE_TALKIE];
		break;
	case 22240013: // computed from GERH_FAT.H
		pgv = &_gameVersions[VER_GER_FLOPPY];
		break;
	case 217648975: // computed from GERC_FAT.H
		pgv = &_gameVersions[VER_GER_TALKIE];
		break;
	case 22461366: // computed from ITAH_FAT.H
		pgv = &_gameVersions[VER_ITA_FLOPPY];
		break;
	case 190795582: // computed from ITAC_FAT.H
		pgv = &_gameVersions[VER_ITA_TALKIE];
		break;
	default:
		error("Unknown/unsupported FOTAQ version");
	}
	return pgv;
}

bool Resource::readTableFile() {
	File tableFile;
	tableFile.open(tableFilename, _datafilePath);
	if (!tableFile.isOpen())	
		tableFile.open(tableFilename, ""); //try current directory
	if (tableFile.isOpen() && tableFile.readUint32BE() == 'QTBL') {
		tableFile.seek(_gameVersion->tableOffset);
		_resourceEntries = tableFile.readUint16BE();
		_resourceTable = new ResourceEntry[_resourceEntries];
		ResourceEntry *pre = _resourceTable;
		for (uint32 i = 0; i < _resourceEntries; ++i, ++pre) {
			tableFile.read(pre->filename, 12);
			pre->filename[12] = '\0';
			pre->inBundle = tableFile.readByte();
			pre->offset = tableFile.readUint32BE();
			pre->size = tableFile.readUint32BE();
		}
		return true;
	}
	return false;
}

void Resource::readTableCompResource() {
	GameVersion *gv = new GameVersion;
	_resourceFile->read(gv->versionString, 6);
	gv->isFloppy = _resourceFile->readByte() != 0;
	gv->isDemo = _resourceFile->readByte() != 0;
	_compression = _resourceFile->readByte();
	_resourceEntries = _resourceFile->readUint16BE();
	_gameVersion = gv;
	
	_resourceFile->seek(15, SEEK_SET);
	_resourceTable = new ResourceEntry[_resourceEntries];
	ResourceEntry *pre = _resourceTable;
	for (uint32 i = 0; i < _resourceEntries; ++i, ++pre) {
		_resourceFile->read(pre->filename, 12);
		pre->filename[12] = '\0';
		pre->inBundle = _resourceFile->readByte();
		pre->offset = _resourceFile->readUint32BE();
		pre->size = _resourceFile->readUint32BE();
	}
}

File *Resource::giveMP3(const char *filename) {
	assert(strstr(filename, ".SB"));
	_resourceFile->seek(fileOffset(filename), SEEK_SET);
	return _resourceFile;
}

} // End of namespace Queen