Closed
Bug 845049
Opened 11 years ago
Closed 11 years ago
Camera - emulator - can't open real camera, "Camera device '/dev/video0' is in use"
Categories
(Firefox OS Graveyard :: General, defect)
Tracking
(Not tracked)
RESOLVED
FIXED
People
(Reporter: mikeh, Unassigned)
References
Details
Attachments
(1 file, 1 obsolete file)
The attached patch is supposed to allow the b2g emulator to use real camera hardware, if present on the host system. On a Lenovo Thinkpad X220 running Ubuntu 12.10 x86_64, the laptop's webcam shows up as /dev/video0 and works in other applications (e.g. Skype); but on starting the emulator and opening the camera app, the following error is emitted: emulator: ERROR: _camera_client_create: Camera device '/dev/video0' is in use Various commands[1] show that no one seems to have /dev/video0 open. 1. http://superuser.com/questions/97844/how-can-i-determine-what-process-has-a-file-open-in-linux
Reporter | ||
Comment 1•11 years ago
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It looks like on Ubuntu 12.10, users are created without belonging to the 'video' group, which is required to access /dev/video0. The following command addresses this issue: # sudo usermod -a -G video <userid> With that done, logcat shows the following: D( 281:0x119) Emulated camera list: name=/dev/video0 channel=0 pix=1448695129 dir=back framedims=640x480,640x360,352x288,320x240,800x448,960x544,1280x720,424x240 V( 281:0x119) Initialize: V( 281:0x119) Name=/dev/video0 V( 281:0x119) Facing 'back' V( 281:0x119) Dimensions=640x480,640x360,352x288,320x240,800x448,960x544,1280x720,424x240 E( 281:0x119) connectClient: Unable to connect to the camera service 'name=/dev/video0': Invalid argument D( 281:0x119) Initialize: Fake camera is facing none V( 281:0x119) 1 cameras are being emulated. Fake camera ID is 0 I( 281:0x119) 1074238600[42607160]: getListOfCameras : get_number_of_cameras() returned 1 sotaro, any chance your patch(es) in bug 803471 will address not being able to connect to the camera service?
Flags: needinfo?(sotaro.ikeda.g)
Comment 2•11 years ago
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(In reply to Mike Habicher [:mikeh] from comment #1) > > sotaro, any chance your patch(es) in bug 803471 will address not being able > to connect to the camera service? After applying the patch, it works!!! And preview screen is rendered correctly.
Flags: needinfo?(sotaro.ikeda.g)
Comment 3•11 years ago
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(In reply to Sotaro Ikeda [:sotaro] from comment #2) > (In reply to Mike Habicher [:mikeh] from comment #1) > > > > sotaro, any chance your patch(es) in bug 803471 will address not being able > > to connect to the camera service? > > After applying the patch, it works!!! And preview screen is rendered > correctly. PC camera's video is rendered on preview. And a taken picture is also image from PC's camera.
Reporter | ||
Comment 4•11 years ago
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(In reply to Sotaro Ikeda [:sotaro] from comment #2) > > After applying the patch, it works!!! And preview screen is rendered > correctly. \o/ \o/ \o/ \o/ \o/ \o/ \o/ We should get your patch landed. :)
Reporter | ||
Comment 5•11 years ago
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Attachment #718082 -
Attachment is obsolete: true
Attachment #723949 -
Flags: review?(mwu)
Updated•11 years ago
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Attachment #723949 -
Flags: review?(mwu) → review+
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Description
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