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
32static rfbBool
33HandleCoRREBPP (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
44    hdr.nSubrects = rfbClientSwap32IfLE(hdr.nSubrects);
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
71