vncoutstream.cpp

vncviewer_source_1.0

/* Copyright (C) 2006 Lucas Gomez  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 FILES
#include "VncOutStream.h"
#include "VncViewer.pan"

//LITERALS

//CONSTANTS

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------
// VncOutStream::VncOutStream()
// C++ default constructor can NOT contain any code, that might leave.
// -----------------------------------------------------------------------------
//
VncOutStream::VncOutStream(MStreamBuf* aOS,TInt aBufSize)
{
    iOS=aOS;
    iBufSize = aBufSize;
    iBuf.CreateMaxL(iBufSize);
    iPtr=0;
	iEnd=iBufSize;
}

// ---------------------------------------------------------------------------
// VncOutStream::~VncOutStream()
// Destructor.
// ---------------------------------------------------------------------------
//
VncOutStream::~VncOutStream()
{

}

void VncOutStream::WriteBytes(RBuf8& aData,TInt aOffset,TInt aLength)
{
	if(aLength<VncOutConstants::KMinBulkSize) 
	{
      	OutStream::WriteBytes(aData,aOffset,aLength);
      	return;
    }

    Flush();
    TRequestStatus status;
    iOS->WriteL(aData.Mid(aOffset),aLength,status);

    iPtrOffset+=aLength;
}
	
void VncOutStream::Flush()
{
	TRequestStatus status;
	iOS->WriteL(iBuf,iPtr,status);
    
    iPtrOffset+=iPtr;
    iPtr=0;
}

TInt VncOutStream::Length()
{
    return iPtrOffset+iPtr;
}

TInt VncOutStream::Overrun(TInt aItemSize,TInt aNItems)
{
	if(aItemSize>iBufSize)
      	User::Leave(EVncViewerVncInStreamOverrun);

    Flush();

    if(aItemSize*aNItems>iEnd)
      	aNItems=iEnd/aItemSize;

    return aNItems;
}