ClientConnectionCoRRE.cpp

//  Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
//
//  This file is part of the VNC system.
//
//  The VNC system 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 program 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 program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
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// If the source code for the VNC system is not available from the place 
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// CoRRE (Compact Rising Rectangle Encoding)
//
// The bits of the ClientConnection object to do with CoRRE.

#include "stdhdrs.h"
#include "vncviewer.h"
#include "ClientConnection.h"


void ClientConnection::ReadCoRRERect(rfbFramebufferUpdateRectHeader *pfburh)
{
	// An RRE rect is always followed by a background color
	// For speed's sake we read them together into a buffer.
	char tmpbuf[sz_rfbRREHeader+4];			// biggest pixel is 4 bytes long
    rfbRREHeader *prreh = (rfbRREHeader *) tmpbuf;
	CARD8 *pcolor = (CARD8 *) tmpbuf + sz_rfbRREHeader;
	ReadExact(tmpbuf, sz_rfbRREHeader + m_minPixelBytes);

	prreh->nSubrects = Swap32IfLE(prreh->nSubrects);


    if (prreh->nSubrects == 0) return;

	// The size of an CoRRE subrect including color info
	int subRectSize = m_minPixelBytes + sz_rfbCoRRERectangle;

	// Read subrects into the buffer 
	CheckBufferSize(subRectSize * prreh->nSubrects);
	ReadExact(m_netbuf, subRectSize * prreh->nSubrects);

}