Camera in Scratchbox

[pierreq]

Hi. I am using Maemo SDK5 on Ubuntu 10.4.
I need to develop application using camera on Scratchbox.
Can I redirect the webcam in the laptop so that it will be used as a device camera? How to do it? I have working camera in Ubuntu at /dev/video0. The scratchbox camera at /scratchbox/dev/video0 doesn't work when I try it from outside of scratchbox (mplayer tv:// -tv driver=v4l2:width=640:height=480:device=/scratchbox/dev/video0). When I run Xephyr I don't see camera entry, why?
I am also getting this error when running af-sb-init.sh start
http://pastebin.com/uUiQurAf

I don't have the device all the time and I need this camera support in Scratchbox.
I'm beginner.

[divanov]

/dev/video0 should be created inside scratchbox filesystem when you connect camera to the PC.
This is not an error, but just create a directory
mkdir -p /home/piotr/MyDocs/.camera

It's actually quite strange since .camera was changed to DCIM some year ago.

[pierreq]

Thank you for your reply.
Why then the camera is not in the menu in Xephyr? http://img10.imageshack.us/img10/8158/screenshotjtf.png

How to check that camera is working?

Maybe this will be useful: http://pastebin.com/0MFnZaKR
It is the full log of af-sb-init.sh start (the .camera problem was removed with command you suggested). I'm observing many other errors (with hal etc.)

[divanov]

Why then the camera is not in the menu in Xephyr?

Because camera-ui is not installed?

apt-get install camera-ui

[pierreq]

Thank you. There is some error when I try to install the package:

[sbox-FREMANTLE_X86: ~] > fakeroot apt-get install camera-ui.*
Reading package lists... Done
Building dependency tree... Done
Note, selecting osso-camera-ui-l10n-zhhk for regex 'camera-ui.*'
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Do you want to continue [Y/n]? Y
Setting up camkeyd (0.0.2-2) ...
start: Unable to send message: Connection refused
dpkg: error processing camkeyd (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 camkeyd
E: Sub-process /scratchbox/devkits/debian-etch/bin/dpkg returned an error code (1)

and when I try to run camkeyd I got an error:

[sbox-FREMANTLE_X86: ~] > camkeyd
system dbus init fail

when the emulation is stopped and

hal init fail: (null)

when it is started

[divanov]

[sbox-FREMANTLE_X86: ~] > fakeroot apt-get install camera-ui.*

You don't need dot and asterisk.

[pierreq]

Yea that's strange but it doesn't work without it:

[sbox-FREMANTLE_X86: ~] > fakeroot apt-get install camera-ui  
Reading package lists... Done
Building dependency tree... Done
E: Couldn't find package camera-ui

and I have the repos:

[sbox-FREMANTLE_X86: ~] > cat /etc/apt/sources.list                 
deb http://repository.maemo.org/ fremantle/sdk free non-free
deb-src http://repository.maemo.org/ fremantle/sdk free
deb http://repository.maemo.org/ fremantle/tools free non-free
deb-src http://repository.maemo.org/ fremantle/tools free
deb http://repository.maemo.org/ fremantle/4bc37c7c77ebe90177c050b805a8dc79 nokia-binaries
deb http://repository.maemo.org/extras-devel/ fremantle free non-free
deb-src http://repository.maemo.org/extras-devel/ fremantle free
deb http://repository.maemo.org/extras/ fremantle free non-free
deb-src http://repository.maemo.org/extras/ fremantle free

[gnuton]

It doesn't work because the camera-ui package cannot be downloaded from any repository.
It's shipped with the device.
Anyway this doesn't prevent you from making your camera application.

[divanov]

Ok, it's not in public repository for some reason.

[pierreq]

Hi gulton.
Your post made me lost. It is not consistent with previous indications given from divanov.
Can you say more about it?

I am complete beginner and I dont have the device at the moment to test. I must develop this application on Scratchbox.

[divanov]

camera-ui is only camera application, you don't need it for developing your own camera application. That's what Antonio was trying to say.

[gnuton]

camera-ui is only camera application, you don't need it for developing your own camera application. That's what Antonio was trying to say.

correct! ;D

[pierreq]

Thank you but I still have problem.
I compiled the examples (including example_camera) from http://maemo.org/development/sdks/maemo_5_examples/

I am getting the following error on scratchbox:

run-standalone.sh ./example_camera
hildon-desktop[8952]: GLIB WARNING ** ClutterX11 - clutter_x11_texture_pixmap_sync_window: Got X error but pixmap is still set
hildon-desktop[8952]: GLIB WARNING ** ClutterX11 - Unable to query pixmap: e0003d

and on the emulator screen I see the message "Failed to initialize pipeline" from the file http://vcs.maemo.org/svn/maemoexampl...ample_camera.c.

[divanov]

The former two are warnings from hildon-desktop. You can put more g_critical calls to initialize_pipeline function to find exact place where GStreamer pipeline creation fails.

[pierreq]

When I changed the driver to: #define VIDEO_SRC "videotestsrc"
I got this error:

[sbox-FREMANTLE_X86: ~/examples/maemo-examples] > run-standalone.sh ./example_camera
OIL: ERROR liboiltest.c 405: oil_test_check_impl(): function mas10_u8_mmx_2 in class mas10_u8_l15 failed check (9034 > 0) || (outside=0)
example_camera[13526]: GLIB WARNING ** default - GST error: Internal data flow error., gstbasesrc.c(2378): gst_base_src_loop (): /GstPipeline:test-camera/GstVideoTestSrc:camera_src:
streaming task paused, reason not-linked (-1)

My video driver is basically this one: #define VIDEO_SRC "v4l2" (tested on mplayer outside scratchbox) when I use this in example_camera the error message in emulator is again : "Failed to initialize pipeline" and program doesn't terminate, the xterm shows:

[sbox-FREMANTLE_X86: ~/examples/maemo-examples] > run-standalone.sh ./example_camera
example_camera[13671]: GLIB CRITICAL ** default - Couldn't create pipeline elements

and the camera LED is still offline in laptop.