LibVNCServer/LibVNCClient
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rre.c
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1 /*
2  * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
3  *
4  * This is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This software is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this software; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
17  * USA.
18  */
19 
20 /*
21  * rre.c - handle RRE encoding.
22  *
23  * This file shouldn't be compiled directly. It is included multiple times by
24  * rfbproto.c, each time with a different definition of the macro BPP. For
25  * each value of BPP, this file defines a function which handles an RRE
26  * encoded rectangle with BPP bits per pixel.
27  */
28 
29 #define HandleRREBPP CONCAT2E(HandleRRE,BPP)
30 #define CARDBPP CONCAT3E(uint,BPP,_t)
31 
32 static rfbBool
33 HandleRREBPP (rfbClient* client, int rx, int ry, int rw, int rh)
34 {
35  rfbRREHeader hdr;
36  int i;
37  CARDBPP pix;
38  rfbRectangle subrect;
39 
40  if (!ReadFromRFBServer(client, (char *)&hdr, sz_rfbRREHeader))
41  return FALSE;
42 
44 
45  if (!ReadFromRFBServer(client, (char *)&pix, sizeof(pix)))
46  return FALSE;
47 
48  FillRectangle(client, rx, ry, rw, rh, pix);
49 
50  for (i = 0; i < hdr.nSubrects; i++) {
51  if (!ReadFromRFBServer(client, (char *)&pix, sizeof(pix)))
52  return FALSE;
53 
54  if (!ReadFromRFBServer(client, (char *)&subrect, sz_rfbRectangle))
55  return FALSE;
56 
57  subrect.x = rfbClientSwap16IfLE(subrect.x);
58  subrect.y = rfbClientSwap16IfLE(subrect.y);
59  subrect.w = rfbClientSwap16IfLE(subrect.w);
60  subrect.h = rfbClientSwap16IfLE(subrect.h);
61 
62  FillRectangle(client, rx+subrect.x, ry+subrect.y, subrect.w, subrect.h, pix);
63  }
64 
65  return TRUE;
66 }
67 
68 #undef CARDBPP