On 03/24/14 17:52, Tom wrote:
> Hello,
>
> while reading into the media-api issue I found out that for configuring the
> entity pads a frameformat is used.
>
> For that I found the negotiation rfc of that topic, but I don't really get
> the relevance of a frameformat.
>
> http://www.spinics.net/lists/linux-media/msg10006.html
>
> Can anyone explain why the media-api uses the frameformat instead of the
> pixelformat and what the main differences are?
The pixelformat describes the image format in memory, the mbus_framefmt
describes the image data as it is transferred over a hardware bus.
It's as simple as that. While the two are related (i.e. to get a certain
pixelformat you probably need to set up a specific mbus_framefmt), the
details of this relationship are board or even use-case dependent.
Regards,
Hans
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