[Live-devel] Too many buffered packets

[Rawling, Stuart]

Hi, 
Today I cam across an issue where the source was seemingly buffering up
thousands of packets.  I got a crash in my client which after looking at the
backtrace could be to do with a memory / stack issue.  Basically I found a
backtrace that was 16 *thousand* frames long.  It seems that there were
thousands of buffered packets in the linked list for some reason.  When I
called pause, it called MultiFramedRTPSource::reset which deleted the
buffers in the linked list.

I was wondering if anyone had any suggestions as to what caused this and how
I could fix it.  

The stack trace below is a sample of the many thousands I received.  I am
calling all actions on live555 in a single thread.

Stuart

#16137 0x0543175e in ~H264BufferedPacket (this=0x94e0b7b8) at
H264VideoRTPSource.cpp:162
#16138 0x05430827 in ~BufferedPacket (this=0xae68e0f8) at
MultiFramedRTPSource.cpp:316
#16139 0x0543175e in ~H264BufferedPacket (this=0xae68e0f8) at
H264VideoRTPSource.cpp:162
#16140 0x05430827 in ~BufferedPacket (this=0x94e0e8a8) at
MultiFramedRTPSource.cpp:316
#16141 0x0543175e in ~H264BufferedPacket (this=0x94e0e8a8) at
H264VideoRTPSource.cpp:162
#16142 0x05430827 in ~BufferedPacket (this=0x94e0de30) at
MultiFramedRTPSource.cpp:316
#16143 0x0543175e in ~H264BufferedPacket (this=0x94e0de30) at
H264VideoRTPSource.cpp:162
#16144 0x05430827 in ~BufferedPacket (this=0xae6e9b78) at
MultiFramedRTPSource.cpp:316
#16145 0x0543175e in ~H264BufferedPacket (this=0xae6e9b78) at
H264VideoRTPSource.cpp:162
#16146 0x05430827 in ~BufferedPacket (this=0x86fbf08) at
MultiFramedRTPSource.cpp:316
#16147 0x0543175e in ~H264BufferedPacket (this=0x86fbf08) at
H264VideoRTPSource.cpp:162
#16148 0x05430274 in ReorderingPacketBuffer::reset (this=0xa19bbf20) at
MultiFramedRTPSource.cpp:459
#16149 0x05430eaf in MultiFramedRTPSource::doStopGettingFrames
(this=0xa19bcb60) at MultiFramedRTPSource.cpp:106
#16150 0x054143da in FramedSource::stopGettingFrames (this=0xa19bcb60) at
FramedSource.cpp:107
#16151 0x05429fd3 in MediaSink::stopPlaying (this=0xb1e29760) at
MediaSink.cpp:83
#16152 0x057fddb1 in PELCO_RECEIVER_LIVE555_RTP_PLUGIN::RtpReceiver::Stop
(this=0xb1e296e8) at Source/RtpReceiver.cpp:379
#16153 0x057f3b22 in
PELCO_RECEIVER_LIVE555_RTP_PLUGIN::ReceiverLive555MediaObject::ProcessPause
(this=0xa19e3250) at Source/ReceiverLive555MediaObject.cpp:185
#16154 0x002ad3c1 in MPF_SDK::BaseMediaObject::_ProcessNextCommand
(this=0xa19e3250, waitForCommand=1) at Source/BaseMediaObject.cpp:1079
#16155 0x002ad6bc in MPF_SDK::BaseMediaObject::Process (this=0xa19e3250) at
Source/BaseMediaObject.cpp:951
#16156 0x002aa880 in MPF_SDK::MediaObjectThread::svc (this=0xa19e33e0) at
Source/BaseMediaObject.cpp:62
#16157 0x00852cc2 in ACE_Task_Base::svc_run () from ./Libs/libACE.so.5.6.6
#16158 0x00852f2d in ACE_Thread_Adapter::invoke_i () from
./Libs/libACE.so.5.6.6
#16159 0x00852fa6 in ACE_Thread_Adapter::invoke () from
./Libs/libACE.so.5.6.6
#16160 0x007e0fd1 in ace_thread_adapter () from ./Libs/libACE.so.5.6.6
#16161 0x00cb732f in start_thread () from /lib/libpthread.so.0
#16162 0x00e6220e in clone () from /lib/libc.so.6



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