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| ndufresne | pinchartl: are you aware of ucv change that lead to the entity info to be "Video Capture N" ?
just updated my box to 5.15.6, and had to pick a camera in the browser .... The name used to be made from the device model ... And this is not just the browser, this issue is visble in firefox, chrome, cheese, in gst-device-monitor-1.0 kind of a massive user experience regression .... | [15:02] |
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| pinchartl | what was the previous kernel version ? | [15:22] |
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| pinchartl | ndufresne: e3f60e7e1a2b451f538f9926763432249bcf39c4 maybe ?
ribalda: ^^ | [15:35] |
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| ndufresne | pinchartl: looks like a good candidate, that's were the useless string "Video Captuere" came from
To fix the regression, I'd take the model name as base name instead and ad capture/output/meta instead of just N *add ribalda: basically the regression is to have dropped dev->name from the name, it creates unusable strings and these goes straight to our users (which are now all confused) | [16:05] |
| pinchartl | ndufresne: that will often exceed the 32 characters limit for the name though, resulting in truncated strings, and thus duplicate entity names
I'm fine reverting the patch as a quick fix until a better solution can be implemented one option could be to split the entity name and video device name ndufresne: can I let you discuss this with Ricardo ? | [16:08] |
| ndufresne | pinchartl: or give both parts a fixed number of char, so you truncate equally ;-
but yeah, I'll post on the ML but for UI users, this is clearly a big regression (wasn't great, but wasn't as bad as it is now) note that camera naming is equally bad on Windows fwiw | [16:13] |
| pinchartl | no, it's the fault of userspace for never have implemented a proper naming scheme for devices of course ;-) (V4L2 sucks in that regard)
we've fixed it in libcamera: we don't expose a name anymore :-D | [16:14] |
| ndufresne | well, you mean there is nothing usable by userland at all ;-D | [16:15] |
| pinchartl | exactly :-)
it's only really postponing the problem of course, I'd like to get back to device naming at some point | [16:15] |
| ndufresne | but libcamera can have the luxury to create a mapping ;-P
and exceed the 32chat limit | [16:15] |
| pinchartl | yes | [16:15] |
| ndufresne | having that mapping in every single userland would be a terrible experience | [16:15] |
| pinchartl | yeswhat I fought against was an API that would expose a name naively without thinking about all the consequences (such as localization). I expect this will be "fun" to handle | [16:16] |
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| ndufresne | localization would likely be important, but the translation work does not seems dramatically high | [16:39] |
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| pinchartl | I don't think it will be that difficult. my only concern is that it has to be considered in the API design, that's all
we had other priorities, so that's why I didn't want to expose a bad name right away | [17:12] |
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| nm | I'm having a problem with v4l2 on Kernel versions 5.15.x. When getting the name of a camera by using "v4l2_capability card" it is returning "Video Capture 4" instead of the name of the camera. My code works correctly with kernel versions 5.14. Can anybody help? | [18:03] |
| I'm searching the archives for this channel and found additional information. Thanks. | [18:08] | |
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| pinchartl | ndufresne: does that ring a bell ? :-) | [18:21] |
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| ndufresne | ndufresne back from lunch
haha, I'm not the only one on Fedora which got the update recently heading to the ML to resume our discussions here pinchartl: outch, just saw, autosel 5.4, 5.10, 5.14, 5.15 | [18:52] |
| pinchartl | there are too many patches backported to stable kernels if you ask me | [18:57] |
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| ndufresne | in general I'm mostly happy with these, but this one is only a cleanup to satisty a test
which turns out to carry a user experience regression (user facing change) it didn't fix any user issue, it only created one | [19:08] |
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| ribalda | ndufresne: pinchartl: Sorry for coming late to the party
I believe there was a proposal with name-function ID but I agree with a fast revert and then figure out a betters solution | [22:23] |
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