void OnExpire(event e,
int members,
int senders,
double rtcp_bw,
int we_sent,
double *avg_rtcp_size,
int *initial,
time_tp tc,
time_tp *tp,
int *pmembers)
{
/* This function is responsible for deciding whether to send
* an RTCP report or BYE packet now, or to reschedule transmission.
* It is also responsible for updating the pmembers, initial, tp,
* and avg_rtcp_size state variables. This function should be called
* upon expiration of the event timer used by Schedule(). */
double t; /* Interval */
double tn; /* Next transmit time */
/* In the case of a BYE, we use "unconditional reconsideration" to
* reschedule the transmission of the BYE if necessary */
if (TypeOfEvent(e) == EVENT_BYE) {
t = rtcp_interval(members,
senders,
rtcp_bw,
we_sent,
*avg_rtcp_size,
*initial);
tn = *tp + t;
if (tn <= tc) {
SendBYEPacket(e);
exit(1);
} else {
Schedule(tn, e);
}
} else if (TypeOfEvent(e) == EVENT_REPORT) {
t = rtcp_interval(members,
senders,
rtcp_bw,
we_sent,
*avg_rtcp_size,
*initial);
tn = *tp + t;
if (tn <= tc) {
SendRTCPReport(e);
*avg_rtcp_size = (1./16.)*SentPacketSize(e) +
(15./16.)*(*avg_rtcp_size);
*tp = tc;
/* We must redraw the interval. Don't reuse the
one computed above, since its not actually
distributed the same, as we are conditioned
on it being small enough to cause a packet to
be sent */
t = rtcp_interval(members,
senders,
rtcp_bw,
we_sent,
*avg_rtcp_size,
*initial);
Schedule(t+tc,e);
*initial = 0;
} else {
Schedule(tn, e);
}
*pmembers = members;
}
}
void IPTVStreamHandlerWriteHelper::timerEvent(QTimerEvent* event)
{
if (event->timerId() == m_timer_rtcp)
{
SendRTCPReport();
return;
}
if (!m_parent->m_buffer->HasAvailablePacket())
return;
while (!m_parent->m_use_rtp_streaming)
{
UDPPacket packet(m_parent->m_buffer->PopDataPacket());
if (packet.GetDataReference().isEmpty())
break;
int remainder = 0;
{
QMutexLocker locker(&m_parent->_listener_lock);
QByteArray &data = packet.GetDataReference();
IPTVStreamHandler::StreamDataList::const_iterator sit;
sit = m_parent->_stream_data_list.begin();
for (; sit != m_parent->_stream_data_list.end(); ++sit)
{
remainder = sit.key()->ProcessData(
reinterpret_cast<const unsigned char*>(data.data()),
data.size());
}
}
if (remainder != 0)
{
LOG(VB_RECORD, LOG_INFO, LOC_WH +
QString("data_length = %1 remainder = %2")
.arg(packet.GetDataReference().size()).arg(remainder));
}
m_parent->m_buffer->FreePacket(packet);
}
while (m_parent->m_use_rtp_streaming)
{
RTPDataPacket packet(m_parent->m_buffer->PopDataPacket());
if (!packet.IsValid())
break;
if (packet.GetPayloadType() == RTPDataPacket::kPayLoadTypeTS)
{
RTPTSDataPacket ts_packet(packet);
if (!ts_packet.IsValid())
{
m_parent->m_buffer->FreePacket(packet);
continue;
}
uint exp_seq_num = m_last_sequence_number + 1;
uint seq_num = ts_packet.GetSequenceNumber();
if (m_last_sequence_number &&
((exp_seq_num&0xFFFF) != (seq_num&0xFFFF)))
{
LOG(VB_RECORD, LOG_INFO, LOC_WH +
QString("Sequence number mismatch %1!=%2")
.arg(seq_num).arg(exp_seq_num));
if (seq_num > exp_seq_num)
{
m_lost_interval = seq_num - exp_seq_num;
m_lost += m_lost_interval;
}
}
m_last_sequence_number = seq_num;
m_last_timestamp = ts_packet.GetTimeStamp();
LOG(VB_RECORD, LOG_DEBUG,
QString("Processing RTP packet(seq:%1 ts:%2)")
.arg(m_last_sequence_number).arg(m_last_timestamp));
m_parent->_listener_lock.lock();
int remainder = 0;
IPTVStreamHandler::StreamDataList::const_iterator sit;
sit = m_parent->_stream_data_list.begin();
for (; sit != m_parent->_stream_data_list.end(); ++sit)
{
remainder = sit.key()->ProcessData(
ts_packet.GetTSData(), ts_packet.GetTSDataSize());
}
m_parent->_listener_lock.unlock();
if (remainder != 0)
{
LOG(VB_RECORD, LOG_INFO, LOC_WH +
QString("data_length = %1 remainder = %2")
.arg(ts_packet.GetTSDataSize()).arg(remainder));
}
}
m_parent->m_buffer->FreePacket(packet);
}
}