LibVNCServer/LibVNCClient
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corre.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  * corre.c - handle CoRRE 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 a CoRRE
26  * encoded rectangle with BPP bits per pixel.
27  */
28 
29 #define HandleCoRREBPP CONCAT2E(HandleCoRRE,BPP)
30 #define CARDBPP CONCAT3E(uint,BPP,_t)
31 
32 static rfbBool
33 HandleCoRREBPP (rfbClient* client, int rx, int ry, int rw, int rh)
34 {
35  rfbRREHeader hdr;
36  int i;
37  CARDBPP pix;
38  uint8_t *ptr;
39  int x, y, w, h;
40 
41  if (!ReadFromRFBServer(client, (char *)&hdr, sz_rfbRREHeader))
42  return FALSE;
43 
45 
46  if (!ReadFromRFBServer(client, (char *)&pix, sizeof(pix)))
47  return FALSE;
48 
49  FillRectangle(client, rx, ry, rw, rh, pix);
50 
51  if (!ReadFromRFBServer(client, client->buffer, hdr.nSubrects * (4 + (BPP / 8))))
52  return FALSE;
53 
54  ptr = (uint8_t *)client->buffer;
55 
56  for (i = 0; i < hdr.nSubrects; i++) {
57  pix = *(CARDBPP *)ptr;
58  ptr += BPP/8;
59  x = *ptr++;
60  y = *ptr++;
61  w = *ptr++;
62  h = *ptr++;
63 
64  FillRectangle(client, rx+x, ry+y, w, h, pix);
65  }
66 
67  return TRUE;
68 }
69 
70 #undef CARDBPP