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[06:54] <mriesch> in a mc topology with one device and one subdev, should "media0" appear in /sys/class/video4linux/{video0,v4l-subdev0}/ ?
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[06:55] <mriesch> if i understand correctly, this is how v4l-compliance determines the corresponding media controller. in my setup /dev/media0 exists, but it doesn't appear in the sysfs directories
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[07:19] <hverkuil> mriesch: no, it's not there.
[07:20] <hverkuil> See mi_get_media_fd() in utils/common/media-info.cpp
[07:21] <hverkuil> It's found in /sys/dev/char/81\:6/device/mediaX (for a /dev/videoX with major ID 81 and minor ID 6)
[07:24] <mriesch> hverkuil: ok.. don't /sys/dev/char/maj:min/device/ and /sys/class/video4linux/mydevname/ point to the same directory?
[07:24] <mriesch> anyway the problem is that media0 does not appear in any of the two :-)
[07:30] <hverkuil> mriesch: no, mediaX isn't part of the video4linux class (intentionally)
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[07:51] <mriesch> hverkuil: i checked what vivid does but it seems the bridge driver (hacky version and not to be trusted fully) does it right. indeed media0 appears in the bridge device directory.
[07:51] <mriesch> but the subdevice directory lacks the entry
[07:52] <mriesch> if you have any further pointers i'd be grateful...
[07:52] <mriesch> gotta run now, though. thanks a lot!
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[16:49] <paulk> btw something I never thought of: can there be multiple clients to a v4l2 dma capture device that each queue their buffers alternatively?
[16:49] <paulk> assuming they all use the same format
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[16:49] <paulk> if so, should I be worried about disabling the device at any single streamoff ?
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