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/* Copyright (C) 2002-2004 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.
*/
#include <rdr/OutStream.h>
#include <rdr/MemOutStream.h>
#include <rfb/msgTypes.h>
#include <rfb/Exception.h>
#include <rfb/ConnParams.h>
#include <rfb/SMsgWriterV3.h>
using namespace rfb;
SMsgWriterV3::SMsgWriterV3(ConnParams* cp, rdr::OutStream* os)
: SMsgWriter(cp, os), updateOS(0), realOS(os), nRectsInUpdate(0),
nRectsInHeader(0), wsccb(0),
needSetDesktopSize(false)
{
}
SMsgWriterV3::~SMsgWriterV3()
{
delete updateOS;
}
void SMsgWriterV3::writeServerInit()
{
os->writeU16(cp->width);
os->writeU16(cp->height);
cp->pf().write(os);
os->writeString(cp->name());
endMsg();
}
void SMsgWriterV3::startMsg(int type)
{
if (os != realOS)
throw Exception("startMsg called while writing an update?");
os->writeU8(type);
}
void SMsgWriterV3::endMsg()
{
os->flush();
}
bool SMsgWriterV3::writeSetDesktopSize() {
if (!cp->supportsDesktopResize) return false;
needSetDesktopSize = true;
return true;
}
void SMsgWriterV3::cursorChange(WriteSetCursorCallback* cb)
{
wsccb = cb;
}
void SMsgWriterV3::writeSetCursor(int width, int height, int hotspotX,
int hotspotY, void* data, void* mask)
{
if (!wsccb) return;
if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
throw Exception("SMsgWriterV3::writeSetCursor: nRects out of sync");
os->writeS16(hotspotX);
os->writeS16(hotspotY);
os->writeU16(width);
os->writeU16(height);
os->writeU32(pseudoEncodingCursor);
os->writeBytes(data, width * height * (cp->pf().bpp/8));
os->writeBytes(mask, (width+7)/8 * height);
}
void SMsgWriterV3::writeFramebufferUpdateStart(int nRects)
{
startMsg(msgTypeFramebufferUpdate);
os->pad(1);
if (wsccb) nRects++;
if (needSetDesktopSize) nRects++;
os->writeU16(nRects);
nRectsInUpdate = 0;
nRectsInHeader = nRects;
if (wsccb) {
wsccb->writeSetCursorCallback();
wsccb = 0;
}
}
void SMsgWriterV3::writeFramebufferUpdateStart()
{
nRectsInUpdate = nRectsInHeader = 0;
if (!updateOS)
updateOS = new rdr::MemOutStream;
os = updateOS;
}
void SMsgWriterV3::writeFramebufferUpdateEnd()
{
if (needSetDesktopSize) {
if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
throw Exception("SMsgWriterV3 setDesktopSize: nRects out of sync");
os->writeS16(0);
os->writeS16(0);
os->writeU16(cp->width);
os->writeU16(cp->height);
os->writeU32(pseudoEncodingDesktopSize);
needSetDesktopSize = false;
}
if (nRectsInUpdate != nRectsInHeader && nRectsInHeader)
throw Exception("SMsgWriterV3::writeFramebufferUpdateEnd: "
"nRects out of sync");
if (os == updateOS) {
os = realOS;
startMsg(msgTypeFramebufferUpdate);
os->pad(1);
os->writeU16(nRectsInUpdate);
os->writeBytes(updateOS->data(), updateOS->length());
updateOS->clear();
}
updatesSent++;
endMsg();
}
bool SMsgWriterV3::needFakeUpdate()
{
return wsccb || needSetDesktopSize;
}
void SMsgWriterV3::startRect(const Rect& r, unsigned int encoding)
{
if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
throw Exception("SMsgWriterV3::startRect: nRects out of sync");
currentEncoding = encoding;
lenBeforeRect = os->length();
if (encoding != encodingCopyRect)
rawBytesEquivalent += 12 + r.width() * r.height() * (bpp()/8);
os->writeS16(r.tl.x);
os->writeS16(r.tl.y);
os->writeU16(r.width());
os->writeU16(r.height());
os->writeU32(encoding);
}
void SMsgWriterV3::endRect()
{
if (currentEncoding <= encodingMax) {
bytesSent[currentEncoding] += os->length() - lenBeforeRect;
rectsSent[currentEncoding]++;
}
}
void SMsgWriterV3::setOutStream(rdr::OutStream* os_)
{
SMsgWriter::setOutStream(os_);
realOS = os;
}
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