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<p class="MsoNormal">Hi, everyone<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We recently upgrade gstreamer from 1.4.5 to gstreamer 1.6.0 and we encountered a strange problem.<o:p></o:p></p>
<p class="MsoNormal">Videotestsrc get SIGSEGV sometime by loop following command:<o:p></o:p></p>
<p class="MsoNormal"> gst-launch-1.0 videotestsrc num-buffers=100 ! video/x-raw,format=I420 ! fakesink<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="border:none;padding:0in">the backtrack is :<o:p></o:p></p>
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<p class="MsoNormal">Setting pipeline to PAUSED ...<o:p></o:p></p>
<p class="MsoNormal">Pipeline is PREROLLING ...<o:p></o:p></p>
<p class="MsoNormal">Caught SIGSEGV<o:p></o:p></p>
<p class="MsoNormal">#0 0x76c762c0 in poll () at ../sysdeps/unix/syscall-template.S:81<o:p></o:p></p>
<p class="MsoNormal">#1 0x76d4f854 in g_main_context_iterate (priority=<optimized out>, n_fds=2, fds=0x3a7f78, timeout=-1, context=0x3a7db0)<o:p></o:p></p>
<p class="MsoNormal">#2 0x76d4f854 in g_main_context_iterate (context=0x3a7db0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)<o:p></o:p></p>
<p class="MsoNormal">#3 0x76d4fc0c in g_main_loop_run (loop=0x3a7c10)<o:p></o:p></p>
<p class="MsoNormal">#4 0x76ebea34 in gst_bus_poll (bus=bus@entry=0x2a0d48 [GstBus], events=events@entry=GST_MESSAGE_ANY, timeout=<optimized out>)<o:p></o:p></p>
<p class="MsoNormal">#5 0x00013d48 in event_loop (pipeline=0x3a6098 [GstPipeline], blocking=blocking@entry=1, do_progress=2124655120,<o:p></o:p></p>
<p class="MsoNormal">#6 0x00012e94 in main (argc=1993417836, argv=0x46f)<o:p></o:p></p>
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<p class="MsoNormal" style="border:none;padding:0in">Spinning. Please run 'gdb gst-launch-1.0 25103' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">the looping time is not fix, sometime only need loop several times, sometimes need loop several minutes.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But when I disable the ORC, it works fine.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The same problem happens to videoconvert who also use ORC code. When disable ORC, it works.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My platform is ARM A9. Same command loop on PC has no problem.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there any bug in 1.6.0 ORC code?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Another question: how much performance loss for elements such as videoconvert/audioconvert if I disable ORC ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Mingke<o:p></o:p></p>
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