mirror of
https://github.com/TigerVNC/tigervnc.git
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![Constantin Kaplinsky](/assets/img/avatar_default.png)
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
174 lines
4.4 KiB
C++
174 lines
4.4 KiB
C++
/* Copyright (C) 2002-2004 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include <rdr/OutStream.h>
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#include <rdr/MemOutStream.h>
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#include <rfb/msgTypes.h>
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#include <rfb/Exception.h>
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#include <rfb/ConnParams.h>
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#include <rfb/SMsgWriterV3.h>
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using namespace rfb;
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SMsgWriterV3::SMsgWriterV3(ConnParams* cp, rdr::OutStream* os)
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: SMsgWriter(cp, os), updateOS(0), realOS(os), nRectsInUpdate(0),
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nRectsInHeader(0), wsccb(0),
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needSetDesktopSize(false)
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{
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}
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SMsgWriterV3::~SMsgWriterV3()
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{
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delete updateOS;
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}
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void SMsgWriterV3::writeServerInit()
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{
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os->writeU16(cp->width);
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os->writeU16(cp->height);
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cp->pf().write(os);
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os->writeString(cp->name());
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endMsg();
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}
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void SMsgWriterV3::startMsg(int type)
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{
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if (os != realOS)
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throw Exception("startMsg called while writing an update?");
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os->writeU8(type);
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}
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void SMsgWriterV3::endMsg()
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{
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os->flush();
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}
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bool SMsgWriterV3::writeSetDesktopSize() {
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if (!cp->supportsDesktopResize) return false;
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needSetDesktopSize = true;
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return true;
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}
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void SMsgWriterV3::cursorChange(WriteSetCursorCallback* cb)
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{
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wsccb = cb;
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}
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void SMsgWriterV3::writeSetCursor(int width, int height, int hotspotX,
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int hotspotY, void* data, void* mask)
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{
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if (!wsccb) return;
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if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
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throw Exception("SMsgWriterV3::writeSetCursor: nRects out of sync");
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os->writeS16(hotspotX);
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os->writeS16(hotspotY);
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os->writeU16(width);
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os->writeU16(height);
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os->writeU32(pseudoEncodingCursor);
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os->writeBytes(data, width * height * (cp->pf().bpp/8));
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os->writeBytes(mask, (width+7)/8 * height);
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}
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void SMsgWriterV3::writeFramebufferUpdateStart(int nRects)
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{
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startMsg(msgTypeFramebufferUpdate);
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os->pad(1);
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if (wsccb) nRects++;
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if (needSetDesktopSize) nRects++;
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os->writeU16(nRects);
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nRectsInUpdate = 0;
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nRectsInHeader = nRects;
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if (wsccb) {
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wsccb->writeSetCursorCallback();
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wsccb = 0;
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}
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}
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void SMsgWriterV3::writeFramebufferUpdateStart()
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{
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nRectsInUpdate = nRectsInHeader = 0;
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if (!updateOS)
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updateOS = new rdr::MemOutStream;
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os = updateOS;
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}
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void SMsgWriterV3::writeFramebufferUpdateEnd()
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{
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if (needSetDesktopSize) {
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if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
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throw Exception("SMsgWriterV3 setDesktopSize: nRects out of sync");
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os->writeS16(0);
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os->writeS16(0);
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os->writeU16(cp->width);
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os->writeU16(cp->height);
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os->writeU32(pseudoEncodingDesktopSize);
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needSetDesktopSize = false;
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}
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if (nRectsInUpdate != nRectsInHeader && nRectsInHeader)
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throw Exception("SMsgWriterV3::writeFramebufferUpdateEnd: "
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"nRects out of sync");
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if (os == updateOS) {
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os = realOS;
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startMsg(msgTypeFramebufferUpdate);
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os->pad(1);
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os->writeU16(nRectsInUpdate);
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os->writeBytes(updateOS->data(), updateOS->length());
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updateOS->clear();
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}
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updatesSent++;
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endMsg();
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}
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bool SMsgWriterV3::needFakeUpdate()
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{
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return wsccb || needSetDesktopSize;
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}
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void SMsgWriterV3::startRect(const Rect& r, unsigned int encoding)
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{
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if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
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throw Exception("SMsgWriterV3::startRect: nRects out of sync");
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currentEncoding = encoding;
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lenBeforeRect = os->length();
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if (encoding != encodingCopyRect)
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rawBytesEquivalent += 12 + r.width() * r.height() * (bpp()/8);
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os->writeS16(r.tl.x);
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os->writeS16(r.tl.y);
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os->writeU16(r.width());
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os->writeU16(r.height());
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os->writeU32(encoding);
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}
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void SMsgWriterV3::endRect()
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{
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if (currentEncoding <= encodingMax) {
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bytesSent[currentEncoding] += os->length() - lenBeforeRect;
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rectsSent[currentEncoding]++;
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}
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}
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void SMsgWriterV3::setOutStream(rdr::OutStream* os_)
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{
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SMsgWriter::setOutStream(os_);
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realOS = os;
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}
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