[FFmpeg-devel] [PATCH 2/4] kmsgrab: Remove multiple-plane formats

[Carl Eugen Hoyos]

2017-09-15 23:53 GMT+02:00 Mark Thompson <sw at jkqxz.net>:
> On 15/09/17 22:50, Carl Eugen Hoyos wrote:
>> 2017-09-15 23:44 GMT+02:00 Mark Thompson <sw at jkqxz.net>:
>>> On 15/09/17 22:43, Carl Eugen Hoyos wrote:
>>>> 2017-09-15 22:51 GMT+02:00 Mark Thompson <sw at jkqxz.net>:
>>>>> The planes have no reason to be contiguous, assuming they
>>>>> are results in very broken output.
>>>>
>>>> Is being contiguous a requirement of DRM?
>>>
>>> For multiple-plane formats, no.  Hence the change.
>>
>> Is it a requirement in FFmpeg?
>>
>> Sorry if I misunderstand, Carl Eugen
>
> Right, sorry, I wasn't reading the right thing into the question.
>
> Only the address of the first plane is retrievable, so we don't know
> the addresses of the other planes.  Assuming they are contiguous
> is a possible guess, but not one we can actually make in practice.

How are the formats supposed to be used?

Just curious, Carl Eugen