void LiveDownloadDriver::OnDataRateChanged()
{
// 保留在切换码流前的校验失败次数，但是在下面这种情况，统计的校验失败次数会比实际的偏大，
// 如果A->B->A，而切换前 A 对应的LiveInstance的校验计算结果>0，而且全部切换的时间小于120秒，
// 那A对应的LiveInstance还在缓存中而被重用，因而A的校验次数会被重复统计。
// 我们认为偏大的值可以接受，所以在这没有精确计算校验失败次数
checksum_failed_times_ += live_streams_[data_rate_manager_.GetLastDataRatePos()]->GetInstance()->GetChecksumFailedTimes();
bool http_paused = live_streams_[data_rate_manager_.GetLastDataRatePos()]->GetHttpDownloader()->IsPausing();
bool p2p_paused = true;
if (live_streams_[data_rate_manager_.GetLastDataRatePos()]->GetP2PDownloader())
{
live_streams_[data_rate_manager_.GetLastDataRatePos()]->GetP2PDownloader()->IsPausing();
p2p_paused = false;
}
CalcCdnAccelerationStatusWhenStop(data_rate_manager_.GetLastDataRatePos());
for (vector<LiveStream__p>::iterator iter = live_streams_.begin();
iter != live_streams_.end(); ++iter)
{
(*iter)->Stop();
}
live_streams_[data_rate_manager_.GetCurrentDataRatePos()]->Start(GetPlayingPosition().GetBlockId());
// HttpDownloader的下载状态恢复
if (!http_paused)
{
GetHTTPControlTarget()->Resume();
}
// P2PDownloader的下载状态恢复
if (!p2p_paused)
{
GetP2PControlTarget()->Resume();
}
}
EC_VOID EngGetPlayingPosition(MediaEngineHandle handle, EC_U32 *pPosition)
{
GetPlayingPosition(handle, pPosition);
}
void LiveDownloadDriver::OnTimerElapsed(framework::timer::Timer * pointer)
{
if (pointer == &timer_)
{
if (playing_position_.GetSubPieceIndex() == 0)
{
JumpOrSwitchIfNeeded();
}
#ifndef STATISTIC_OFF
UpdateStatisticInfo();
statistic_->UpdateShareMemory();
#endif
if (http_download_max_speed_ < GetHTTPControlTarget()->GetSpeedInfo().NowDownloadSpeed)
{
http_download_max_speed_ = GetHTTPControlTarget()->GetSpeedInfo().NowDownloadSpeed;
}
if (GetP2PControlTarget())
{
if (p2p_download_max_speed_ < GetP2PControlTarget()->GetSpeedInfo().NowDownloadSpeed)
{
p2p_download_max_speed_ = GetP2PControlTarget()->GetSpeedInfo().NowDownloadSpeed;
}
if (udp_server_max_speed_ < GetP2PControlTarget()->GetUdpServerSpeedInfo().NowDownloadSpeed)
{
udp_server_max_speed_ = GetP2PControlTarget()->GetUdpServerSpeedInfo().NowDownloadSpeed;
}
}
++elapsed_seconds_since_started_;
if (bufferring_monitor_)
{
if (elapsed_seconds_since_started_ > 10 &&
GetRestPlayableTime() <= 1)
{
boost::uint32_t data_rate = GetDataRate();
if (data_rate > 0)
{
storage::LivePosition live_position = GetPlayingPosition();
boost::uint32_t bufferring_position_in_seconds = live_position.GetBlockId()*GetInstance()->GetLiveInterval() +
live_position.GetSubPieceIndex()*storage::HeaderSubPiece::Constants::SubPieceSizeInBytes/data_rate;
bufferring_monitor_->BufferringOccurs(bufferring_position_in_seconds);
}
}
}
if (max_upload_speed_during_this_connection_ < statistic::UploadStatisticModule::Inst()->GetUploadSpeed())
{
max_upload_speed_during_this_connection_ = statistic::UploadStatisticModule::Inst()->GetUploadSpeed();
}
total_upload_connection_count_ += statistic::UploadStatisticModule::Inst()->GetUploadCount();
if (statistic::UploadStatisticModule::Inst()->GetUploadCount() != 0)
{
++time_of_nonblank_upload_connections_;
}
rest_playable_times_.push_back(GetRestPlayableTime());
if (tick_count_since_last_recv_subpiece_.elapsed() > 180 * 1000 && !is_notify_restart_
&& ((GetHTTPControlTarget() && !GetHTTPControlTarget()->IsPausing()) ||
(GetP2PControlTarget() && !GetP2PControlTarget()->IsPausing())))
{
#ifdef PEER_PC_CLIENT
WindowsMessage::Inst().PostWindowsMessage(UM_LIVE_RESTART, NULL, NULL);
is_notify_restart_ = true;
max_push_data_interval_ = tick_count_since_last_recv_subpiece_.elapsed();
#endif
}
if (udpserver_count_ != UdpServerFromBSPool::Inst()->GetUdpServerCount())
{
udpserver_count_ = UdpServerFromBSPool::Inst()->GetUdpServerCount();
AddLiveUdpServerFromBS();
}
}
}
