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/**
* @licence app begin@
* Copyright (C) 2011-2014 BMW AG
*
* This file is part of COVESA Project Dlt Viewer.
*
* Contributions are licensed to the COVESA Alliance under one or more
* Contribution License Agreements.
*
* \copyright
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* \author Alexander Wenzel <alexander.aw.wenzel@bmw.de> 2011-2012
*
* \file qdltsegmentedmsg.cpp
* For further information see http://www.covesa.global/.
* @licence end@
*/
#include <QByteArray>
#include "qdltsegmentedmsg.h"
QDltSegmentedMsg::QDltSegmentedMsg()
{
handle = 0;
size = 0;
chunks = 0;
chunkSize = 0;
chunksAdded = 0;
state = DltSegStart;
}
int QDltSegmentedMsg::add(QDltMsg &msg)
{
QDltArgument argument;
if(msg.getNumberOfArguments()<1)
{
error = "Invalid number of arguments in start segment message";
return -1;
}
msg.getArgument(0,argument);
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoStrg)
{
error = "Invalid Type in start segment message";
return -1;
}
QString str = argument.getValue().toString();
if(str=="NWST")
{
// start of segmented message
if(msg.getNumberOfArguments()!=6)
{
error = "Invalid number of arguments in start segment message";
return -1;
}
msg.getArgument(1,argument); // get handle
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in start segment message";
return -1;
}
handle = argument.getValue().toUInt();
msg.getArgument(2,argument); // get header
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoRawd)
{
error = "Invalid Type in start segment message";
return -1;
}
header = argument.getData();
msg.getArgument(3,argument); // get size
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in start segment message";
return -1;
}
size = argument.getValue().toUInt();
msg.getArgument(4,argument); // get chunks
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in start segment message";
return -1;
}
chunks = argument.getValue().toUInt();
msg.getArgument(5,argument); // get chunk size
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in start segment message";
return -1;
}
chunkSize = argument.getValue().toUInt();
if(state != DltSegStart)
{
error = "Start segment received several times";
return -1;
}
state = DltSegChunk;
payload.resize(size);
}
else if(str=="NWCH")
{
// chunk of segmented message
if(msg.getNumberOfArguments()!=4)
{
error = "Invalid number of arguments in chunk segment message";
return -1;
}
msg.getArgument(1,argument); // get handle
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in chunk segment message";
return -1;
}
if(handle != argument.getValue())
{
error = "Handle unequal in chunk message";
return -1;
}
msg.getArgument(2,argument); // get sequence
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in chunk segment message";
return -1;
}
uint32_t sequence = argument.getValue().toUInt();
if(sequence>=chunks)
{
error = QString("Sequence bigger than number of chunks: Sequence = %1, Chunks = %2").arg(sequence).arg(chunks);
return -1;
}
msg.getArgument(3,argument); // get chunk
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoRawd)
{
error = "Invalid Type in chunk segment message";
return -1;
}
payload.replace(sequence*chunkSize,chunkSize,argument.getData());
chunksAdded += 1;
}
else if(str=="NWEN")
{
// end of segmented message
if(msg.getNumberOfArguments()!=2)
{
error = "Invalid number of arguments in end segment message";
return -1;
}
msg.getArgument(1,argument); // get handle
if(argument.getTypeInfo()!=QDltArgument::DltTypeInfoUInt)
{
error = "Invalid Type in end segment message";
return -1;
}
if(handle != argument.getValue())
{
error = "Invalid handle in end chunk";
return -1;
}
if(state != DltSegChunk)
{
error = "End chunk received without start chunk";
return -1;
}
if(chunksAdded!=chunks)
{
error = QString("Number of chunks mismatch: Received = %1, Total = %2").arg(chunksAdded).arg(chunks);
return -1;
}
state = DltSegFinish;
}
else
{
error = "Invalid segmented message string";
return -1;
}
return 0;
}
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