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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//
Pierre Ossmanbcc295e2014-02-12 13:16:43 +010021// This file is #included after having set the following macro:
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000022// BPP - 8, 16 or 32
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000023
24#include <rdr/InStream.h>
25
26namespace rfb {
27
28// CONCAT2E concatenates its arguments, expanding them if they are macros
29
30#ifndef CONCAT2E
31#define CONCAT2(a,b) a##b
32#define CONCAT2E(a,b) CONCAT2(a,b)
33#endif
34
35#define PIXEL_T rdr::CONCAT2E(U,BPP)
36#define READ_PIXEL CONCAT2E(readOpaque,BPP)
37#define RRE_DECODE CONCAT2E(rreDecode,BPP)
38
Pierre Ossman0c9bd4b2014-07-09 16:44:11 +020039void RRE_DECODE (const Rect& r, rdr::InStream* is,
40 const PixelFormat& pf, ModifiablePixelBuffer* pb)
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000041{
42 int nSubrects = is->readU32();
43 PIXEL_T bg = is->READ_PIXEL();
Pierre Ossman56f99d62015-06-05 12:57:02 +020044 pb->fillRect(pf, r, &bg);
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000045
46 for (int i = 0; i < nSubrects; i++) {
47 PIXEL_T pix = is->READ_PIXEL();
48 int x = is->readU16();
49 int y = is->readU16();
50 int w = is->readU16();
51 int h = is->readU16();
Pierre Ossman56f99d62015-06-05 12:57:02 +020052 pb->fillRect(pf, Rect(r.tl.x+x, r.tl.y+y, r.tl.x+x+w, r.tl.y+y+h), &pix);
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000053 }
54}
55
56#undef PIXEL_T
57#undef READ_PIXEL
58#undef RRE_DECODE
59}