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/*
* Copyright (C) 2008-2014 The QXmpp developers
*
* Author:
* Jeremy Lainé
*
* Source:
* https://github.com/qxmpp-project/qxmpp
*
* This file is a part of QXmpp library.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
*/
#include <QDataStream>
#include <QDebug>
#include "QXmppRtcpPacket.h"
#define RTP_VERSION 2
class QXmppRtcpPacketPrivate : public QSharedData
{
public:
/// Number of report blocks.
quint8 count;
/// Payload type.
quint8 type;
/// Raw payload data.
QByteArray payload;
};
/// Constructs an empty RTCP packet
QXmppRtcpPacket::QXmppRtcpPacket()
: d(new QXmppRtcpPacketPrivate())
{
}
/// Constructs a copy of other.
///
/// \param other
///
QXmppRtcpPacket::QXmppRtcpPacket(const QXmppRtcpPacket &other)
: d(other.d)
{
}
QXmppRtcpPacket::~QXmppRtcpPacket()
{
}
/// Assigns the other packet to this one.
///
/// \param other
///
QXmppRtcpPacket& QXmppRtcpPacket::operator=(const QXmppRtcpPacket& other)
{
d = other.d;
return *this;
}
/// Parses an RTCP packet.
///
/// \param ba
bool QXmppRtcpPacket::decode(const QByteArray &ba)
{
quint8 tmp, type;
quint16 len;
// fixed header
QDataStream stream(ba);
stream >> tmp;
stream >> type;
stream >> len;
if (stream.status() != QDataStream::Ok)
return false;
// check version
if ((tmp >> 6) != RTP_VERSION)
return false;
const int payloadLength = len << 2;
d->count = (tmp & 0x1f);
d->type = type;
d->payload.resize(payloadLength);
return stream.readRawData(d->payload.data(), payloadLength) == payloadLength;
}
/// Encodes an RTCP packet.
QByteArray QXmppRtcpPacket::encode() const
{
QByteArray ba;
ba.resize(4 + d->payload.size());
QDataStream stream(&ba, QIODevice::WriteOnly);
stream << quint8((RTP_VERSION << 6) | (d->count & 0x1f));
stream << d->type;
stream << quint16(d->payload.size() >> 2);
stream.writeRawData(d->payload.constData(), d->payload.size());
return ba;
}
/// Returns the number of report blocks.
quint8 QXmppRtcpPacket::count() const
{
return d->count;
}
/// Sets the number of report blocks.
///
/// \param count
void QXmppRtcpPacket::setCount(quint8 count)
{
d->count = count;
}
/// Returns the RTCP packet type.
quint8 QXmppRtcpPacket::type() const
{
return d->type;
}
/// Sets the RTCP packet type.
///
/// \param type
void QXmppRtcpPacket::setType(quint8 type)
{
d->type = type;
}
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