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Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +00001/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
2 *
3 * This is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This software is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this software; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
16 * USA.
17 */
18//
19// RRE decoding function.
20//
21// This file is #included after having set the following macros:
22// BPP - 8, 16 or 32
23// EXTRA_ARGS - optional extra arguments
24// FILL_RECT - fill a rectangle with a single colour
25
26#include <rdr/InStream.h>
27
28namespace rfb {
29
30// CONCAT2E concatenates its arguments, expanding them if they are macros
31
32#ifndef CONCAT2E
33#define CONCAT2(a,b) a##b
34#define CONCAT2E(a,b) CONCAT2(a,b)
35#endif
36
37#define PIXEL_T rdr::CONCAT2E(U,BPP)
38#define READ_PIXEL CONCAT2E(readOpaque,BPP)
39#define RRE_DECODE CONCAT2E(rreDecode,BPP)
40
41void RRE_DECODE (const Rect& r, rdr::InStream* is
42#ifdef EXTRA_ARGS
43 , EXTRA_ARGS
44#endif
45 )
46{
47 int nSubrects = is->readU32();
48 PIXEL_T bg = is->READ_PIXEL();
49 FILL_RECT(r, bg);
50
51 for (int i = 0; i < nSubrects; i++) {
52 PIXEL_T pix = is->READ_PIXEL();
53 int x = is->readU16();
54 int y = is->readU16();
55 int w = is->readU16();
56 int h = is->readU16();
57 FILL_RECT(Rect(r.tl.x+x, r.tl.y+y, r.tl.x+x+w, r.tl.y+y+h), pix);
58 }
59}
60
61#undef PIXEL_T
62#undef READ_PIXEL
63#undef RRE_DECODE
64}