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Re: [Spca50x-devs] spcagui - segmentation fault Kubuntu 7.10, Suse 10.3




Le mardi 29 janvier 2008 08:25, jansuz a écrit :
> Below is the output from gdb after recompiling spcagui with -g (on
> Kubuntu 7.10 amf64).
>
> Jansuz
>
> $ gdb ./spcagui
> GNU gdb 6.6-debian
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu"...
> Using host libthread_db library "/lib/libthread_db.so.1".
> (gdb) run
> Starting program:
> /home/janusz/myKubuntu/webcam/mxhaard.free.fr/spcagui20060127/spcagui
> [Thread debugging using libthread_db enabled]
> [New Thread 47107383081520 (LWP 6859)]
> SpcaGui version: 0.3.5 date: 18 September 2005
> video device /dev/video0
> Camera found: Labtec Webcam Pro
> VIDIOCGPICT brightnes=32768 hue=0 color=0 contrast=32768
> whiteness=0depth=24 palette=4
> Bridge found: ZC301-2
> Unable to find a StreamId !!
> StreamId: 6 Unknow Camera
> try palette 15 depth 12
> Available  palette 15
> try palette 3 depth 16
> Available  palette 3
> try palette 4 depth 24
> Available  palette 4
> try palette 5 depth 32
> Available  palette 5
> probe size in
> Available Resolutions width 640  heigth 480
> Available Resolutions width 384  heigth 288
> Available Resolutions width 352  heigth 288
> Available Resolutions width 320  heigth 240
> Available Resolutions width 192  heigth 144
> Available Resolutions width 176  heigth 144
> Available Resolutions width 160  heigth 120
>   grabbing method default MMAP asked
> VIDIOCGMBUF size 2457632  frames 2  offets[0]=0 offsets[1]=1228816
> VIDIOCGPICT brightnes=32768 hue=0 color=0 contrast=32768
> whiteness=0depth=12 palette=15
> VIDIOCGPICT brightnes=32768 hue=0 color=0 contrast=32768
> whiteness=0depth=12 palette=15
> VIDIOCGPICT brightnes=32768 hue=0 color=0 contrast=32768
> whiteness=0depth=12 palette=15
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 47107383081520 (LWP 6859)]
> draw_surface (x=0, y=0, surface=0x0, screen=0x63b970) at gui.c:35
> 35        dest.w = surface->w;
> (gdb) VIDIOCSPICT brightnes=32768 hue=0 color=0 contrast=32768
> whiteness=0depth=12 palette=15
>
> backtrace
> #0  draw_surface (x=0, y=0, surface=0x0, screen=0x63b970) at gui.c:35
> #1  0x0000000000401d87 in telecom () at spcagui.c:315
> #2  0x0000000000402d86 in main (argc=1, argv=<value optimized out>) at
> spcagui.c:131
> (gdb)
>
> Denver Gingerich wrote:
> > On Jan 28, 2008 9:11 PM, Denver Gingerich <denver@xxxxxxxxxx> wrote:
> >> $ gdb ./spcagui
> >> ...
> >> (gdb) run
> >> ...
> >> [SIGSEGV]
> >> (gdb) backtrace
> >> [send us the stuff you get here]
> >>
> >> This will show us the functions that were being called at the time the
> >> segfault occurred.  I'm not sure if it's compiled with debugging
> >> symbols by default; if it is, then we may need you to re-send the
> >
> > That should be "if it isn't [compiled with debugging symbols]".
> >
> >> backtrace after compiling with -g, but just send us the backtrace for
> >> now.
> >>
> >> Denver
>
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Hi All,
This is a common mistake, trigerred  by people that don't read the readme ...
gspcagui used is own widgets and need to be installed first with a 
make install as root !!
regards
-- 
Michel Xhaard
http://mxhaard.free.fr

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