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
|
/* Copyright (C) 2000-2003 Constantin Kaplinsky. All Rights Reserved.
* Copyright (C) 2011 D. R. Commander
*
* 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.
*/
#ifndef __RFB_TIGHTENCODER_H__
#define __RFB_TIGHTENCODER_H__
#include <rdr/MemOutStream.h>
#include <rdr/ZlibOutStream.h>
#include <rfb/JpegCompressor.h>
#include <rfb/Encoder.h>
// FIXME: Check if specifying extern "C" is really necessary.
#include <stdio.h>
extern "C" {
#include <jpeglib.h>
}
namespace rfb {
struct TIGHT_CONF {
unsigned int maxRectSize, maxRectWidth;
unsigned int monoMinRectSize;
int idxZlibLevel, monoZlibLevel, rawZlibLevel;
int idxMaxColorsDivisor;
int palMaxColorsWithJPEG;
int jpegQuality;
JPEG_SUBSAMP jpegSubSample;
};
//
// Compression level stuff. The following array contains various
// encoder parameters for each of 10 compression levels (0..9).
// Last three parameters correspond to JPEG quality levels (0..9).
//
// NOTE: s_conf[9].maxRectSize should be >= s_conf[i].maxRectSize,
// where i in [0..8]. RequiredBuffSize() method depends on this.
// FIXME: Is this comment obsolete?
//
class TightEncoder : public Encoder {
public:
static Encoder* create(SMsgWriter* writer);
virtual void setCompressLevel(int level);
virtual void setQualityLevel(int level);
virtual int getNumRects(const Rect &r);
virtual bool writeRect(const Rect& r, ImageGetter* ig, Rect* actual);
virtual ~TightEncoder();
private:
TightEncoder(SMsgWriter* writer);
bool checkSolidTile(Rect& r, ImageGetter *ig, rdr::U32* colorPtr,
bool needSameColor);
void extendSolidArea(const Rect& r, ImageGetter *ig,
rdr::U32 colorValue, Rect& er);
void findBestSolidArea(Rect& r, ImageGetter* ig, rdr::U32 colorValue,
Rect& bestr);
void sendRectSimple(const Rect& r, ImageGetter* ig);
void writeSubrect(const Rect& r, ImageGetter* ig, bool forceSolid = false);
SMsgWriter* writer;
rdr::MemOutStream mos;
rdr::ZlibOutStream zos[4];
JpegCompressor jc;
static const int defaultCompressLevel;
static const TIGHT_CONF conf[];
const TIGHT_CONF* pconf;
const TIGHT_CONF* pjconf;
};
}
#endif
|
