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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#include <stdio.h>
19#include <rdr/OutStream.h>
20#include <rfb/msgTypes.h>
21#include <rfb/PixelFormat.h>
22#include <rfb/Rect.h>
23#include <rfb/ConnParams.h>
24#include <rfb/Decoder.h>
25#include <rfb/CMsgWriter.h>
26
27using namespace rfb;
28
29CMsgWriter::CMsgWriter(ConnParams* cp_, rdr::OutStream* os_)
30 : cp(cp_), os(os_)
31{
32}
33
34CMsgWriter::~CMsgWriter()
35{
36}
37
38void CMsgWriter::writeSetPixelFormat(const PixelFormat& pf)
39{
40 startMsg(msgTypeSetPixelFormat);
41 os->pad(3);
42 pf.write(os);
43 endMsg();
44}
45
46void CMsgWriter::writeSetEncodings(int nEncodings, rdr::U32* encodings)
47{
48 startMsg(msgTypeSetEncodings);
49 os->skip(1);
50 os->writeU16(nEncodings);
51 for (int i = 0; i < nEncodings; i++)
52 os->writeU32(encodings[i]);
53 endMsg();
54}
55
56// Ask for encodings based on which decoders are supported. Assumes higher
57// encoding numbers are more desirable.
58
59void CMsgWriter::writeSetEncodings(int preferredEncoding, bool useCopyRect)
60{
61 int nEncodings = 0;
62 rdr::U32 encodings[encodingMax+3];
Pierre Ossmanc754cce2011-11-14 15:44:11 +000063
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000064 if (cp->supportsLocalCursor)
65 encodings[nEncodings++] = pseudoEncodingCursor;
66 if (cp->supportsDesktopResize)
67 encodings[nEncodings++] = pseudoEncodingDesktopSize;
Pierre Ossman49f88222009-03-20 13:02:50 +000068 if (cp->supportsExtendedDesktopSize)
69 encodings[nEncodings++] = pseudoEncodingExtendedDesktopSize;
Peter Åstrandc39e0782009-01-15 12:21:42 +000070 if (cp->supportsDesktopRename)
71 encodings[nEncodings++] = pseudoEncodingDesktopName;
Pierre Ossmanc754cce2011-11-14 15:44:11 +000072
73 encodings[nEncodings++] = pseudoEncodingLastRect;
Pierre Ossmanc898d9a2011-11-14 16:22:23 +000074 encodings[nEncodings++] = pseudoEncodingContinuousUpdates;
Pierre Ossmanc754cce2011-11-14 15:44:11 +000075 encodings[nEncodings++] = pseudoEncodingFence;
76
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000077 if (Decoder::supported(preferredEncoding)) {
78 encodings[nEncodings++] = preferredEncoding;
79 }
Pierre Ossmanc754cce2011-11-14 15:44:11 +000080
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +000081 if (useCopyRect) {
82 encodings[nEncodings++] = encodingCopyRect;
83 }
Pierre Ossman090e7d62009-03-12 10:16:07 +000084
85 /*
86 * Prefer encodings in this order:
87 *
88 * Tight, ZRLE, Hextile, *
89 */
90
91 if ((preferredEncoding != encodingTight) &&
92 Decoder::supported(encodingTight))
93 encodings[nEncodings++] = encodingTight;
94
95 if ((preferredEncoding != encodingZRLE) &&
96 Decoder::supported(encodingZRLE))
97 encodings[nEncodings++] = encodingZRLE;
98
99 if ((preferredEncoding != encodingHextile) &&
100 Decoder::supported(encodingHextile))
101 encodings[nEncodings++] = encodingHextile;
102
103 // Remaining encodings
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +0000104 for (int i = encodingMax; i >= 0; i--) {
Pierre Ossman090e7d62009-03-12 10:16:07 +0000105 switch (i) {
106 case encodingTight:
107 case encodingZRLE:
108 case encodingHextile:
109 break;
110 default:
111 if ((i != preferredEncoding) && Decoder::supported(i))
112 encodings[nEncodings++] = i;
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +0000113 }
114 }
Pierre Ossman090e7d62009-03-12 10:16:07 +0000115
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +0000116 if (cp->customCompressLevel && cp->compressLevel >= 0 && cp->compressLevel <= 9)
117 encodings[nEncodings++] = pseudoEncodingCompressLevel0 + cp->compressLevel;
Pierre Ossman3d2ccc42009-03-11 14:33:49 +0000118 if (!cp->noJpeg && cp->qualityLevel >= 0 && cp->qualityLevel <= 9)
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +0000119 encodings[nEncodings++] = pseudoEncodingQualityLevel0 + cp->qualityLevel;
120
121 writeSetEncodings(nEncodings, encodings);
122}
123
124void CMsgWriter::writeFramebufferUpdateRequest(const Rect& r, bool incremental)
125{
126 startMsg(msgTypeFramebufferUpdateRequest);
127 os->writeU8(incremental);
128 os->writeU16(r.tl.x);
129 os->writeU16(r.tl.y);
130 os->writeU16(r.width());
131 os->writeU16(r.height());
132 endMsg();
133}
134
135
136void CMsgWriter::keyEvent(rdr::U32 key, bool down)
137{
138 startMsg(msgTypeKeyEvent);
139 os->writeU8(down);
140 os->pad(2);
141 os->writeU32(key);
142 endMsg();
143}
144
145
146void CMsgWriter::pointerEvent(const Point& pos, int buttonMask)
147{
148 Point p(pos);
149 if (p.x < 0) p.x = 0;
150 if (p.y < 0) p.y = 0;
151 if (p.x >= cp->width) p.x = cp->width - 1;
152 if (p.y >= cp->height) p.y = cp->height - 1;
153
154 startMsg(msgTypePointerEvent);
155 os->writeU8(buttonMask);
156 os->writeU16(p.x);
157 os->writeU16(p.y);
158 endMsg();
159}
160
161
Adam Tkacacf6c6b2009-02-13 12:42:05 +0000162void CMsgWriter::clientCutText(const char* str, rdr::U32 len)
Constantin Kaplinskya2adc8d2006-05-25 05:01:55 +0000163{
164 startMsg(msgTypeClientCutText);
165 os->pad(3);
166 os->writeU32(len);
167 os->writeBytes(str, len);
168 endMsg();
169}