Client Developer Experience

QCameraInfo::availableCameras() returns empty list on qtubuntu, works on xcb

Bug #1438072 reported by Michael Zanetti on 2015-03-30

This bug affects 4 people

	Status	Importance	Assigned to	Milestone
Canonical System Image	Fix Released	Medium	Bill Filler	Canonical System Image 10 "OTA10"
Client Developer Experience	Fix Released	Undecided	Unassigned
qtubuntu-camera (Ubuntu)	Fix Committed	High	Ugo Riboni

Bug Description

Based on [1] I've created a small sample app to verify the issue and indeed it seems to be broken. QCameraInfo::availableCameras() returns an empty list on the BQ phone. It works if the same application is run on X11. Attached you'll find the sample app to reproduce. Watch out for the qDebug() print in main.cpp.

[1] https://askubuntu.com/questions/602892/qt-multimedia-doesnt-seem-to-work-on-touch

Tags:

Related branches

lp://staging/~uriboni/qtubuntu-camera/cameras-info

Merged into lp://staging/qtubuntu-camera/staging at revision 181

PS Jenkins bot: Approve (continuous-integration) on 2016-02-24

Florian Boucault (community): Needs Fixing on 2016-02-24

Revision history for this message

Michael Zanetti (mzanetti) wrote on 2015-03-30:

camera-example.tar.bz2 Edit (30.2 KiB, application/x-tar)

Revision history for this message

Michael Zanetti (mzanetti) wrote on 2015-03-30:

Also broken in current vivid images.

Revision history for this message

Launchpad Janitor (janitor) wrote on 2015-03-30:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in qtmultimedia-opensource-src (Ubuntu):
status:	New → Confirmed

Revision history for this message

Alexandr (desniza) wrote on 2015-07-04:

Confirm, doesn't works on ubuntu 14.04

Florian Boucault (fboucault) on 2016-01-12

Changed in qtubuntu-camera:
importance:	Undecided → High

Revision history for this message

J-B Vosteen (bart-jan-bart) wrote on 2016-01-22:

I tested the example with libqt5multimedia5-plugins installed and it worked.

qtmultimedia5-dev requires libqt5multimedia5-plugins to work correctly.

Revision history for this message

Velkan (velkan-s) wrote on 2016-01-23:

libqt5multimedia5-plugins is in all images by default.

And it still doesn't work on 15.04 OTA-8.5 .

Bill Filler (bfiller) on 2016-01-23

Changed in canonical-devices-system-image:
milestone:	none → ww08-2016
Changed in qtubuntu-camera:
assignee:	nobody → Florian Boucault (fboucault)
Changed in canonical-devices-system-image:
assignee:	nobody → Bill Filler (bfiller)
importance:	Undecided → Medium
Changed in qtubuntu-camera:
importance:	High → Medium

Pat McGowan (pat-mcgowan) on 2016-01-26

Changed in canonical-devices-system-image:
status:	New → Confirmed

Revision history for this message

Florian Boucault (fboucault) wrote on 2016-02-01:

Implementing that API in qtubuntu-camera requires implementing the following 2 interfaces in our QMediaServiceProviderPlugin:

QMediaServiceSupportedDevicesInterface http://doc.qt.io/qt-5/qmediaservicesupporteddevicesinterface.html
Implementing essentially the following methods:
devices(..)
deviceDescription(..)

QMediaServiceCameraInfoInterface http://doc.qt.io/qt-5/qmediaservicecamerainfointerface.html
Implementing essentially the following methods:
cameraPosition(..)
cameraOrientation(..)

This will require APIs currently unexposed in libhybris to be exposed.

While at it it would be good to fix AalVideoDeviceSelectorControl which hardcodes camera information at the moment.

Ugo Riboni (uriboni) on 2016-02-16

Changed in qtubuntu-camera:
assignee:	Florian Boucault (fboucault) → Ugo Riboni (uriboni)
status:	New → In Progress

Pat McGowan (pat-mcgowan) on 2016-02-19

Changed in canonical-devices-system-image:
status:	Confirmed → In Progress

Florian Boucault (fboucault) on 2016-03-03

no longer affects:	qtubuntu-camera
no longer affects:	qtmultimedia-opensource-src (Ubuntu)
Changed in qtubuntu-camera (Ubuntu):
status:	New → Fix Committed
assignee:	nobody → Ugo Riboni (uriboni)
importance:	Undecided → High