blob: 14df2a84527e487c969045252c37bb3beeb62287 (
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
|
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
* Copyright (C) 2011 D. R. Commander. 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.
*/
//
// ZlibOutStream streams to a compressed data stream (underlying), compressing
// with zlib on the fly.
//
#ifndef __RDR_ZLIBOUTSTREAM_H__
#define __RDR_ZLIBOUTSTREAM_H__
#include <rdr/BufferedOutStream.h>
struct z_stream_s;
namespace rdr {
class ZlibOutStream : public BufferedOutStream {
public:
ZlibOutStream(OutStream* os=nullptr, int compressionLevel=-1);
virtual ~ZlibOutStream();
void setUnderlying(OutStream* os);
void setCompressionLevel(int level=-1);
void flush() override;
void cork(bool enable) override;
private:
bool flushBuffer() override;
void deflate(int flush);
void checkCompressionLevel();
OutStream* underlying;
int compressionLevel;
int newLevel;
z_stream_s* zs;
};
} // end of namespace rdr
#endif
|
