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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
package com.tigervnc.rfb;
import com.tigervnc.rdr.*;
abstract public class CMsgWriter {
abstract public void writeClientInit(boolean shared);
synchronized public void writeSetPixelFormat(PixelFormat pf)
{
startMsg(MsgTypes.msgTypeSetPixelFormat);
os.pad(3);
pf.write(os);
endMsg();
}
synchronized public void writeSetEncodings(int nEncodings, int[] encodings)
{
startMsg(MsgTypes.msgTypeSetEncodings);
os.skip(1);
os.writeU16(nEncodings);
for (int i = 0; i < nEncodings; i++)
os.writeU32(encodings[i]);
endMsg();
}
// Ask for encodings based on which decoders are supported. Assumes higher
// encoding numbers are more desirable.
synchronized public void writeSetEncodings(int preferredEncoding, boolean useCopyRect)
{
int nEncodings = 0;
int[] encodings = new int[Encodings.encodingMax+3];
if (cp.supportsLocalCursor)
encodings[nEncodings++] = Encodings.pseudoEncodingCursor;
if (cp.supportsDesktopResize)
encodings[nEncodings++] = Encodings.pseudoEncodingDesktopSize;
if (cp.supportsExtendedDesktopSize)
encodings[nEncodings++] = Encodings.pseudoEncodingExtendedDesktopSize;
if (cp.supportsDesktopRename)
encodings[nEncodings++] = Encodings.pseudoEncodingDesktopName;
if (cp.supportsClientRedirect)
encodings[nEncodings++] = Encodings.pseudoEncodingClientRedirect;
encodings[nEncodings++] = Encodings.pseudoEncodingLastRect;
encodings[nEncodings++] = Encodings.pseudoEncodingContinuousUpdates;
encodings[nEncodings++] = Encodings.pseudoEncodingFence;
if (Decoder.supported(preferredEncoding)) {
encodings[nEncodings++] = preferredEncoding;
}
if (useCopyRect) {
encodings[nEncodings++] = Encodings.encodingCopyRect;
}
/*
* Prefer encodings in this order:
*
* Tight, ZRLE, Hextile, *
*/
if ((preferredEncoding != Encodings.encodingTight) &&
Decoder.supported(Encodings.encodingTight))
encodings[nEncodings++] = Encodings.encodingTight;
if ((preferredEncoding != Encodings.encodingZRLE) &&
Decoder.supported(Encodings.encodingZRLE))
encodings[nEncodings++] = Encodings.encodingZRLE;
if ((preferredEncoding != Encodings.encodingHextile) &&
Decoder.supported(Encodings.encodingHextile))
encodings[nEncodings++] = Encodings.encodingHextile;
// Remaining encodings
for (int i = Encodings.encodingMax; i >= 0; i--) {
switch (i) {
case Encodings.encodingTight:
case Encodings.encodingZRLE:
case Encodings.encodingHextile:
break;
default:
if ((i != preferredEncoding) && Decoder.supported(i))
encodings[nEncodings++] = i;
}
}
encodings[nEncodings++] = Encodings.pseudoEncodingLastRect;
if (cp.customCompressLevel && cp.compressLevel >= 0 && cp.compressLevel <= 9)
encodings[nEncodings++] = Encodings.pseudoEncodingCompressLevel0 + cp.compressLevel;
if (!cp.noJpeg && cp.qualityLevel >= 0 && cp.qualityLevel <= 9)
encodings[nEncodings++] = Encodings.pseudoEncodingQualityLevel0 + cp.qualityLevel;
writeSetEncodings(nEncodings, encodings);
}
synchronized public void writeFramebufferUpdateRequest(Rect r, boolean incremental)
{
startMsg(MsgTypes.msgTypeFramebufferUpdateRequest);
os.writeU8(incremental?1:0);
os.writeU16(r.tl.x);
os.writeU16(r.tl.y);
os.writeU16(r.width());
os.writeU16(r.height());
endMsg();
}
synchronized public void writeKeyEvent(int key, boolean down)
{
startMsg(MsgTypes.msgTypeKeyEvent);
os.writeU8(down?1:0);
os.pad(2);
os.writeU32(key);
endMsg();
}
synchronized public void writePointerEvent(Point pos, int buttonMask)
{
Point p = new Point(pos.x,pos.y);
if (p.x < 0) p.x = 0;
if (p.y < 0) p.y = 0;
if (p.x >= cp.width) p.x = cp.width - 1;
if (p.y >= cp.height) p.y = cp.height - 1;
startMsg(MsgTypes.msgTypePointerEvent);
os.writeU8(buttonMask);
os.writeU16(p.x);
os.writeU16(p.y);
endMsg();
}
synchronized public void writeClientCutText(String str, int len)
{
startMsg(MsgTypes.msgTypeClientCutText);
os.pad(3);
os.writeU32(len);
try {
byte[] utf8str = str.getBytes("UTF8");
os.writeBytes(utf8str, 0, len);
} catch(java.io.UnsupportedEncodingException e) {
e.printStackTrace();
}
endMsg();
}
abstract public void startMsg(int type);
abstract public void endMsg();
synchronized public void setOutStream(OutStream os_) { os = os_; }
ConnParams getConnParams() { return cp; }
OutStream getOutStream() { return os; }
protected CMsgWriter(ConnParams cp_, OutStream os_) {cp = cp_; os = os_;}
ConnParams cp;
OutStream os;
static LogWriter vlog = new LogWriter("CMsgWriter");
}
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