Constantin Kaplinsky | a2adc8d | 2006-05-25 05:01:55 +0000 | [diff] [blame^] | 1 | /* 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 | |
| 28 | namespace 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 | |
| 41 | void 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 | } |