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
|
/* 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 GOB_DATAIO_H
#define GOB_DATAIO_H
#include "common/endian.h"
#include "common/file.h"
namespace Gob {
#define MAX_FILES 30
#define MAX_DATA_FILES 8
#define MAX_SLOT_COUNT 8
class DataIO;
class DataStream : public Common::SeekableReadStream {
public:
DataStream(DataIO &io, int16 handle, uint32 dSize, bool dispose = false);
DataStream(byte *buf, uint32 dSize, bool dispose = true);
virtual ~DataStream();
virtual int32 pos() const;
virtual int32 size() const;
virtual bool seek(int32 offset, int whence = SEEK_SET);
virtual bool eos() const;
virtual uint32 read(void *dataPtr, uint32 dataSize);
private:
DataIO *_io;
int16 _handle;
uint32 _size;
byte *_data;
bool _dispose;
Common::MemoryReadStream *_stream;
};
class DataIO {
public:
struct ChunkDesc {
char chunkName[13];
uint32 size;
uint32 offset;
byte packed;
ChunkDesc() : size(0), offset(0), packed(0) { chunkName[0] = 0; }
};
int32 unpackData(byte *src, byte *dest);
void openDataFile(const char *src, bool itk = 0);
void closeDataFile(bool itk = 0);
byte *getUnpackedData(const char *name);
void closeData(int16 handle);
int16 openData(const char *path);
bool existData(const char *path);
DataStream *openAsStream(int16 handle, bool dispose = false);
int32 getDataSize(const char *name);
byte *getData(const char *path);
DataStream *getDataStream(const char *path);
DataIO(class GobEngine *vm);
~DataIO();
protected:
Common::File _filesHandles[MAX_FILES];
ChunkDesc *_dataFiles [MAX_DATA_FILES];
uint16 _numDataChunks [MAX_DATA_FILES];
int16 _dataFileHandles[MAX_DATA_FILES];
bool _dataFileItk [MAX_DATA_FILES];
ChunkDesc *_chunk [MAX_SLOT_COUNT * MAX_DATA_FILES];
int32 _chunkPos [MAX_SLOT_COUNT * MAX_DATA_FILES];
bool _isCurrentSlot[MAX_SLOT_COUNT * MAX_DATA_FILES];
class GobEngine *_vm;
bool isDataFileChunk(int16 handle) const;
bool isPacked (int16 handle) const;
int getFile (int16 handle) const;
int getSlot (int16 handle) const;
int getIndex(int16 handle) const;
int getIndex (int file, int slot) const;
int16 getHandle(int file, int slot) const;
int16 file_open(const char *path);
Common::File *file_getHandle(int16 handle);
const Common::File *file_getHandle(int16 handle) const;
int16 getChunk(const char *chunkName);
char freeChunk(int16 handle);
int32 readChunk(int16 handle, byte *buf, uint16 size);
int16 seekChunk(int16 handle, int32 pos, int16 from);
uint32 getChunkPos(int16 handle) const;
int32 getChunkSize(const char *chunkName, int32 &packSize);
uint32 getPos(int16 handle);
void seekData(int16 handle, int32 pos, int16 from);
int32 readData(int16 handle, byte *buf, uint16 size);
friend class DataStream;
};
} // End of namespace Gob
#endif // GOB_DATAIO_H
|
