ZlibInStream.h
1.49 KB
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
//
// Copyright (C) 2002 RealVNC Ltd. All Rights Reserved.
//
// This 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 software 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 software; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// ZlibInStream streams from a compressed data stream ("underlying"),
// decompressing with zlib on the fly.
//
#ifndef __RDR_ZLIBINSTREAM_H__
#define __RDR_ZLIBINSTREAM_H__
#pragma once
#include "InStream.h"
struct z_stream_s;
namespace rdr {
class ZlibInStream : public InStream {
public:
ZlibInStream(int bufSize=0);
virtual ~ZlibInStream();
void setUnderlying(InStream* is, int bytesIn);
void reset();
int pos();
private:
int overrun(int itemSize, int nItems);
void decompress();
InStream* underlying;
int bufSize;
int offset;
z_stream_s* zs;
int bytesIn;
U8* start;
};
} // end of namespace rdr
#endif