Bug#509939: This problem persists in current testing and unstable

[Eugen Dedu]

Jaime Alberto Silva wrote:
> This problem is still present in the current testing and unstable versions
> of ekiga.
> 
> I expended several hours in the last days trying to make my Dell Inspiron
> 1420's uvcvideo integrated webcam (05a9:2640 OmniVision OV2640) work with
> ekiga.
> 
> I had checked the bug reports but only for uvcvideo, never for v4l2. Late
> last night I figure it out that Ekiga didn't had support for V4L2, by
> watching at Ekiga's dependencies I guessed that I must install libpt's v4l2
> plugin:
> 
> jaime at inspironjaime2:~$ apt-cache depends ekiga
> ekiga
>   Depends: libatk1.0-0
>   Depends: libavahi-client3
>   Depends: libavahi-common3
>   Depends: libavahi-glib1
>   Depends: libc6
>   Depends: libdbus-glib-1-2
>   Depends: libebook1.2-9
>   Depends: libedataserver1.2-9
>   Depends: libgcc1
>   Depends: libgconf2-4
>   Depends: libglib2.0-0
>   Depends: libgnome2-0
>   Depends: libgnomeui-0
>   Depends: libgtk2.0-0
>   Depends: libldap-2.4-2
>   Depends: libnotify1
>   Depends: <libnotify1-gtk2.10>
>     libnotify1
>   Depends: libopal3.4.2
>   Depends: libpango1.0-0
>   Depends: <libpt2.4.2>
>   Depends: libsigc++-2.0-0c2a
>   Depends: libstdc++6
>   Depends: libx11-6
>   Depends: libxext6
>   Depends: libxml2
>   Depends: libxv1
>   Depends: gconf2
>   Depends: evolution-data-server
>  |Depends: <libpt2.4.2-plugins-alsa>
>   Depends: <libpt2.4.2-plugins-oss>
>  |Depends: <libpt2.4.2-plugins-v4l2>
>  |Depends: <libpt2.4.2-plugins-v4l>
>  |Depends: <libpt2.4.2-plugins-avc>
>   Depends: <libpt2.4.2-plugins-dc>
>   Suggests: siproxd
>   Suggests: gnugk
>   Suggests: <mediaproxy>
>   Suggests: ser
>   Suggests: openser
>   Suggests: rtpproxy
>   Suggests: asterisk
>   Suggests: yate
>   Suggests: <callweaver>
>   Recommends: yelp
> jaime at inspironjaime2:~$
> 
> However when I tried to install libpt2.4.2-plugins-v4l2 I got an error
> saying that the package was not available. So I made a search for libpt:
> 
> jaime at inspironjaime2:~$ apt-cache search libpt
> libpt-1.10.10-plugins-avc - PWLib Video Plugin for IEEE1394 (FireWire) AVC
> devices
> libpt-1.10.10-plugins-dc - PWLib Video Plugin for IEEE1394 (Firewire) DC
> Devices
> libpt-1.11.2 - Portable Windows Library
> libpt-1.11.2-dbg - Portable Windows Library development debug files
> libpt-1.11.2-dev - Portable Windows Library development files
> libpt-1.11.2-doc - Portable Windows Library documentation & sample files
> libpt-1.11.2-plugins-alsa - Portable Windows Library Audio Plugin for the
> ALSA Interface
> libpt-1.11.2-plugins-avc - PWLib Video Plugin for IEEE1394 (FireWire) AVC
> devices
> libpt-1.11.2-plugins-dc - PWLib Video Plugin for IEEE1394 (Firewire) DC
> Devices
> libpt-1.11.2-plugins-oss - Portable Windows Library Audio Plugins for the
> OSS Interface
> libpt-1.11.2-plugins-v4l - Portable Windows Library Video Plugin for
> Video4Linux
> libpt-1.11.2-plugins-v4l2 - Portable Windows Library Video Plugin for
> Video4Linux v2
> libpth-dev - The GNU Portable Threads (development)
> libpth20 - The GNU Portable Threads
> libpthread-stubs0 - pthread stubs not provided by native libc
> libpthread-stubs0-dev - pthread stubs not provided by native libc,
> development files
> libpty-ruby - transitional dummy package
> libruby - Libraries necessary to run Ruby 1.8.x
> libruby1.8 - Libraries necessary to run Ruby 1.8
> glibc-doc - GNU C Library: Documentation
> libpt-1.10.10 - Portable Windows Library
> libpt-1.10.10-dbg - Portable Windows Library development debug files
> libpt-1.10.10-dev - Portable Windows Library development files
> libpt-1.10.10-doc - Portable Windows Library documentation & sample files
> libpt-1.10.10-plugins-alsa - Portable Windows Library Audio Plugin for the
> ALSA Interface
> libpt-1.10.10-plugins-oss - Portable Windows Library Audio Plugins for the
> OSS Interface
> libpt-1.10.10-plugins-v4l - Portable Windows Library Video Plugin for
> Video4Linux
> libpt-1.10.10-plugins-v4l2 - Portable Windows Library Video Plugin for
> Video4Linux v2
> libpt-dev - Portable Tools Library development files
> libpt-doc - Portable Tools Library documentation & sample files
> libpt2.6.1 - Portable Tools Library
> libpt2.6.1-dbg - Portable Tools Library development debug files
> libpt2.6.1-plugins-alsa - PTLib audio plugin for the ALSA Interface
> libpt2.6.1-plugins-oss - PTLib audio plugin for the OSS Interface
> libpt2.6.1-plugins-v4l - Portable Tools Library video plugin for Video4Linux
> libpt2.6.1-plugins-v4l2 - Portable Tools Library video plugin for
> Video4Linux v2
> jaime at inspironjaime2:~$
> 
> So I tought I had to install libpt2.6.1-plugins-v4l2, however I checked
> which libraries ekiga is linked against:
> 
> jaime at inspironjaime2:~$ ldd /usr/bin/ekiga | grep libpt
>     libpt.so.1.10.10 => /usr/lib/libpt.so.1.10.10 (0x00007fef750c1000)
>     libpthread.so.0 => /lib/libpthread.so.0 (0x00007fef73f28000)
> jaime at inspironjaime2:~$ ls -l /usr/lib/libpt.so.1.10.10
> -rw-r--r-- 1 root root 4033536 2008-04-02 00:58 /usr/lib/libpt.so.1.10.10
> jaime at inspironjaime2:~$ dpkg -S /usr/lib/libpt.so.1.10.10
> libpt-1.10.10: /usr/lib/libpt.so.1.10.10
> jaime at inspironjaime2:~$
> 
> And I found that the correct package is libpt-1.10.10-plugins-v4l2. After
> installing it the camera worked perfectly.
> 
> All this brings me to a question: Why ekiga's dependencies list libpt2.4.2*
> but you must use libpt-1.10.10* ?
> 
> Can you imagine a regular desktop user trying to figure this out?

I understand your frustration and time spent.

The error above is that, I suppose, apt-cache depends ekiga looks at the 
experimental version of ekiga, while you have unstable version installed.

As for v4l2, in the next build (I hope in one week), v4l2 will be the 
first choice, before v4l, so it will be installed by default.

Maybe it is better to have all plugins in one package, anyway the 
plugins have between 10kB and 100kB (from memory).

-- 
Eugen