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iptvstreamhandler.cpp
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iptvstreamhandler.cpp
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// -*- Mode: c++ -*-
// Qt headers
#include <QUdpSocket>
// MythTV headers
#include "iptvstreamhandler.h"
#include "rtppacketbuffer.h"
#include "rtptsdatapacket.h"
#include "rtpdatapacket.h"
#include "rtpfecpacket.h"
#include "mythlogging.h"
#define LOC QString("IPTVSH(%1): ").arg(_device)
QMap<QString,IPTVStreamHandler*> IPTVStreamHandler::s_handlers;
QMap<QString,uint> IPTVStreamHandler::s_handlers_refcnt;
QMutex IPTVStreamHandler::s_handlers_lock;
IPTVStreamHandler *IPTVStreamHandler::Get(const QString &devname)
{
QMutexLocker locker(&s_handlers_lock);
QString devkey = devname.toUpper();
QMap<QString,IPTVStreamHandler*>::iterator it = s_handlers.find(devkey);
if (it == s_handlers.end())
{
IPTVStreamHandler *newhandler = new IPTVStreamHandler(devkey);
newhandler->Start();
s_handlers[devkey] = newhandler;
s_handlers_refcnt[devkey] = 1;
LOG(VB_RECORD, LOG_INFO,
QString("IPTVSH: Creating new stream handler %1 for %2")
.arg(devkey).arg(devname));
}
else
{
s_handlers_refcnt[devkey]++;
uint rcount = s_handlers_refcnt[devkey];
LOG(VB_RECORD, LOG_INFO,
QString("IPTVSH: Using existing stream handler %1 for %2")
.arg(devkey)
.arg(devname) + QString(" (%1 in use)").arg(rcount));
}
return s_handlers[devkey];
}
void IPTVStreamHandler::Return(IPTVStreamHandler * & ref)
{
QMutexLocker locker(&s_handlers_lock);
QString devname = ref->_device;
QMap<QString,uint>::iterator rit = s_handlers_refcnt.find(devname);
if (rit == s_handlers_refcnt.end())
return;
if (*rit > 1)
{
ref = NULL;
(*rit)--;
return;
}
QMap<QString,IPTVStreamHandler*>::iterator it = s_handlers.find(devname);
if ((it != s_handlers.end()) && (*it == ref))
{
LOG(VB_RECORD, LOG_INFO, QString("IPTVSH: Closing handler for %1")
.arg(devname));
ref->Stop();
delete *it;
s_handlers.erase(it);
}
else
{
LOG(VB_GENERAL, LOG_ERR,
QString("IPTVSH Error: Couldn't find handler for %1")
.arg(devname));
}
s_handlers_refcnt.erase(rit);
ref = NULL;
}
IPTVStreamHandler::IPTVStreamHandler(const QString &device) :
StreamHandler(device)
{
memset(m_sockets, 0, sizeof(m_sockets));
QStringList parts = device.split("!");
if (parts.size() >= 5)
{
m_addr = QHostAddress(parts[0]);
m_ports[0] = parts[1].toInt();
m_ports[1] = parts[2].toInt();
m_ports[2] = parts[3].toInt();
m_bitrate = parts[4].toInt();
}
else
{
m_ports[0] = -1;
m_ports[1] = -1;
m_ports[2] = -1;
m_bitrate = -1;
}
}
void IPTVStreamHandler::SetRunningDesired(bool desired)
{
StreamHandler::SetRunningDesired(desired);
if (!desired)
exit(0);
}
void IPTVStreamHandler::run(void)
{
RunProlog();
LOG(VB_GENERAL, LOG_INFO, LOC + "run()");
SetRunning(true, false, false);
// TODO Error handling..
// Setup
for (uint i = 0; i < sizeof(m_ports)/sizeof(int); i++)
{
if (m_ports[i] >= 0)
{
m_sockets[i] = new QUdpSocket();
m_read_helpers[i] = new IPTVStreamHandlerReadHelper(
this, m_sockets[i], i);
m_sockets[i]->bind(m_addr, m_ports[i]);
}
}
m_buffer = new RTPPacketBuffer(m_bitrate);
m_write_helper = new IPTVStreamHandlerWriteHelper(this);
m_write_helper->Start();
// Enter event loop
exec();
// Clean up
for (uint i = 0; i < sizeof(m_ports)/sizeof(int); i++)
{
if (m_sockets[i])
{
delete m_sockets[i];
m_sockets[i] = NULL;
delete m_read_helpers[i];
m_read_helpers[i] = NULL;
}
}
delete m_buffer;
m_buffer = NULL;
delete m_write_helper;
m_write_helper = NULL;
SetRunning(false, false, false);
RunEpilog();
}
void IPTVStreamHandlerReadHelper::ReadPending(void)
{
QHostAddress sender;
quint16 senderPort;
if (0 == m_stream)
{
while (m_socket->hasPendingDatagrams())
{
RTPDataPacket packet(m_parent->m_buffer->GetEmptyPacket());
QByteArray &data = packet.GetDataReference();
data.resize(m_socket->pendingDatagramSize());
m_socket->readDatagram(data.data(), data.size(),
&sender, &senderPort);
m_parent->m_buffer->PushDataPacket(packet);
}
}
else
{
while (m_socket->hasPendingDatagrams())
{
RTPFECPacket packet(m_parent->m_buffer->GetEmptyPacket());
QByteArray &data = packet.GetDataReference();
data.resize(m_socket->pendingDatagramSize());
m_socket->readDatagram(data.data(), data.size(),
&sender, &senderPort);
m_parent->m_buffer->PushFECPacket(packet, m_stream - 1);
}
}
}
#define LOC_WH QString("IPTVSH(%1): ").arg(m_parent->_device)
void IPTVStreamHandlerWriteHelper::timerEvent(QTimerEvent*)
{
if (!m_parent->m_buffer->HasAvailablePacket())
return;
while (true)
{
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;
}
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("RunTS(): data_length = %1 remainder = %2")
.arg(ts_packet.GetTSDataSize()).arg(remainder));
}
}
m_parent->m_buffer->FreePacket(packet);
}
}