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.
*
* 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.
*/
//
// RRE decoding function.
//
// This file is #included after having set the following macro:
// BPP - 8, 16 or 32
#include <rdr/InStream.h>
namespace rfb {
// CONCAT2E concatenates its arguments, expanding them if they are macros
#ifndef CONCAT2E
#define CONCAT2(a,b) a##b
#define CONCAT2E(a,b) CONCAT2(a,b)
#endif
#define PIXEL_T rdr::CONCAT2E(U,BPP)
#define READ_PIXEL CONCAT2E(readOpaque,BPP)
#define RRE_DECODE CONCAT2E(rreDecode,BPP)
void RRE_DECODE (const Rect& r, rdr::InStream* is,
const PixelFormat& pf, ModifiablePixelBuffer* pb)
{
int nSubrects = is->readU32();
PIXEL_T bg = is->READ_PIXEL();
pb->fillRect(pf, r, bg);
for (int i = 0; i < nSubrects; i++) {
PIXEL_T pix = is->READ_PIXEL();
int x = is->readU16();
int y = is->readU16();
int w = is->readU16();
int h = is->readU16();
pb->fillRect(pf, Rect(r.tl.x+x, r.tl.y+y, r.tl.x+x+w, r.tl.y+y+h), pix);
}
}
#undef PIXEL_T
#undef READ_PIXEL
#undef RRE_DECODE
}
|
