Re: [PATCH 3/4] kms++util: Add verification module

[Tomi Valkeinen <tomi.valkeinen@ti.com>]

On 18/12/17 13:36, Laurent Pinchart wrote:

> The problem with PNG (or any other format really) is that you not only need to
> encode the image into the target format (PNG or JPG would require external
> libraries, simpler formats such as BMP or PNM could be handled internally),
> but you also need to convert the image to a particular RGB or YUV format
> depending on what the output format requires.

Yes, that's the "hassle" part I was referring to =).

Maybe we need to invent a new file format that can store all kinds of 
formats? (https://xkcd.com/927/)

> If you want to do so, I would like to reuse code from the v4l2convert library.
> The code should be moved to a library that doesn't depend on V4L2, as the
> current API encapsulate conversion in other operations. Other tools such as
> raw2rgbpnm could then be ported to use that library;

Yep, so I agree that doing color format conversions shouldn't really be 
kms++'s job, but at the same time I'd like to be able to export 
framebuffers.

And I'm fine with adding dependencies to kms++, as long as all those are 
optional.

Aren't there "big" image conversion libraries that would do the job? 
Imagemagick? Or something? I have used "convert" command to do some 
conversions, that comes from ImageMagick.

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