[libcamera-devel] libcamerasrc on librem 5: bayer support missing

[Rafael Diniz]

This work will also be useful for supporting both Pinephone 1 cameras.

Rafael

On 12/17/22 20:35, Pavel Machek via libcamera-devel wrote:
> Hi!
> 
>>> Is there any way to get libcamerasrc (gstreamer glue) to work on
>>> Librem 5?
>>>
>>> As far as I can tell, libcamerasrc does not support bayer formats,
>>> thus I can't really use gstreamer glue on Librem 5.
>>>
>>> Would it be simple to add such support?
>>>
>>
>> Simplicity is relative to the knowledge of the dev doing the work. But it
>> is relatively simple. In GStreamer Bayer formats have their own
>> media type
> 
> I know, but there's a difference in "can be solved with 10 lines of
> code" and "needs 1000 lines to be written".
> 
>> (video/x-bayer). There isn't a libgstbayer library for it, so no custom
>> stride/padding can be used for now (since nothing is ever set in stone)
>> though it's much easier. In general, if you add the missing formats, we
>> request a basic implementation in bayer2rgb and rgb2bayer software
>> elements. This is extremely useful when using and debugging.
>>
>> Note that "some" patterns are already supported. If it's the case, you just
>> need to map these into libcamerasrc.
> 
> I'm looking for GRBG8 support, so I assume simply doing the mapping
> should be enough. I guess this is the "10 lines of code" case, but I
> don't know much about gstreamer or libcamera, so it will likely take
> me some time to figure which lines...
> 
> Best regards,
> 									Pavel
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