[PATCH] cam: Convert RGB variations to BGR

[Milan Zamazal]

Pavel Machek <pavel at ucw.cz> writes:

> Hi!
>
>> > From looking at the code, soft ISP seemed to be able to do other stuff
>> > than ARGB, but for some reason ARGB is selected by default, and I
>> > guess I can get better performance by forcing right format.
>> 
>> Software ISP debayering supports multiple output formats and `cam' can
>> request a particular output format.  For example,
>> 
>>   cam -c1 -C4 -s pixelformat=BGR888 -Ffoo#.ppm
>> 
>> outputs the right thing.  Example of requesting an output in a different
>> format:
>> 
>>   cam -c1 -C4 -s pixelformat=ARGB8888 -Ffoo#.raw
>> 
>> It works; is it a problem in your application?
>
> Well, problem is that if you do something like "cam -c1 -Ffoo#.ppm" it
> decides to use ARGB8888 and fails writing into ppm. That is not great.

Maybe `cam' could be enhanced to select BGR888, if available, in case
ppm file output is requested.