GST_MESSAGE_DEVICE_ADDED never called

Osmo Antero osmoma at gmail.com
Fri Jul 10 14:43:57 PDT 2015


Re-hi,
I want to be more precise.
It can take upto 10 - 15 seconds before audio-recorder (or gstreamer
monitor) detects new hw.
The device (like my USB webcam with mic) appears in the GUI but the delay
feels like a bug.

Moma


On Fri, Jul 10, 2015 at 10:33 PM, Osmo Antero <osmoma at gmail.com> wrote:

> Hello,
>
> Check system messages with dmesg to see if the kernel detects your camera.
> $ dmesg -wH
> ...
>
> You may also study how audio-recorder handles new and removed audio-input
> devices.
> Ref:
> http://bazaar.launchpad.net/~audio-recorder/audio-recorder/trunk/view/head:/src/gst-devices.c
>
> Sometimes it takes upto 5 - 6 seconds before audio-recorder (or Gstreamer)
> reacts to new hw.
> Audio-recorder has also a refresh-button to reload the device list.
> Disconnected devices are handled immediately.
>
> A.r: https://launchpad.net/~audio-recorder
>
> Moma.
>
> On Fri, Jul 10, 2015 at 5:26 PM, Luis Garcia <garcia.luis at gmx.de> wrote:
>
>>
>> It is a logitech camera, an USB Webcam.
>> I am running Suse Linux.
>> When I connect the camera it appears in /dev the new device, /dev/video0.
>> And I added :
>>     if (!gst_device_monitor_start (monitor))
>>     g_error ("Failed to start device monitor!");
>>
>> to check if device monitor starts, and it starts without an error.
>>
>> Greetings
>>  *Gesendet:* Freitag, 10. Juli 2015 um 18:08 Uhr
>> *Von:* "Olivier CrĂȘte" <olivier.crete at collabora.com>
>> *An:* gstreamer-devel at lists.freedesktop.org
>> *Betreff:* Re: GST_MESSAGE_DEVICE_ADDED never called
>> Hi,
>>
>> Is it a USB Webcam? Are you running a generic desktop distribution
>> (Fedora, Ubuntu, etc) or something strange?
>> When you connect the camera, does a /dev/video<X> device appear? Check
>> the return value of gst_device_monitor_start().
>>
>> Olivier
>> --
>> Olivier CrĂȘte
>> olivier.crete at collabora.com
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>
>
> --
> Sent from my PC, laptop or phone with Ubuntu-Linux.
>



-- 
Sent from my PC, laptop or phone with Ubuntu-Linux.
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