Date: Thu, 26 May 2011 15:30:36 +0200 From: Matthias Apitz <guru@unixarea.de> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-multimedia@freebsd.org Subject: Ekiga && PTlib: pwc.ko ./. webcamd Message-ID: <20110526133032.GA24919@sh4-5.1blu.de>
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Hello Hans,
I've ported PTlib, Opal and Ekiga from SVN and Git to FreeBSD HEAD
(r220692, ~mid of April); the webcamd(8) is from ports from the same day;
in PTlib is support for V4L (plugin vidinput_v4l.cxx, attached) which
works fine in Ekiga when I use the kernel mod pwc.ko (from the ports as
well);
it crashes Ekiga when webcamd(8) and its pwc.ko is used while opening
the webcam:
stderr:
2011/05/23 16:26:18.817 0:11.012 PVideoInputDevice_V4L: trying to open Philips SPC 900NC webcam
gdb backtrace:
(gdb) bt
#0 0x2a57dcda in memcpy () from /lib/libc.so.7
#1 0x2b8a504c in PVideoInputDevice_V4L::GetFrameDataNoDelay () from /usr/local/lib/ptlib-2.10.1/devices/videoinput/v4l_pwplugin.so
#2 0x2b8a50c9 in PVideoInputDevice_V4L::GetFrameData () from /usr/local/lib/ptlib-2.10.1/devices/videoinput/v4l_pwplugin.so
#3 0x285935b1 in GMVideoInputManager_ptlib::get_frame_data (this=0x2b5d5470, data=0x2b604000 '¥' <repeats 200 times>...)
at ../lib/engine/components/ptlib/videoinput-manager-ptlib.cpp:190
#4 0x28523a87 in Ekiga::VideoInputCore::get_frame_data (this=0x2aeda200, data=0x2b604000 '¥' <repeats 200 times>...)
at ../lib/engine/videoinput/videoinput-core.cpp:381
#5 0x285241fe in Ekiga::VideoInputCore::VideoPreviewManager::Main (this=0x2aeda318)
at ../lib/engine/videoinput/videoinput-core.cpp:110
#6 0x294b473e in PThread::PX_ThreadStart () from /usr/local/lib/libpt.so.2.10-beta1
#7 0x2a46846a in pthread_getprio () from /lib/libthr.so.3
#8 0x00000000 in ?? ()
Before debugging further this, can you imagine why this works with
pwc.ko and not with webcamd(8)?
Thanks
matthias
--
Matthias Apitz
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e <guru@unixarea.de> - w http://www.unixarea.de/
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