[FFmpeg-devel] [PATCHv6 4/4] libavcodec: v4l2: add support for v4l2 mem2mem codecs

[Jorge Ramirez]

On 08/29/2017 01:50 PM, wm4 wrote:
>>> If you want to support direct FD/dmabuf export, adapting to
>>> AVHWFramesContext now would probably be easier in total. Especially
>>> because of the implied API change. But I'd wait for Mark Thompson's
>>> comments on that before making any big changes. AFAIK he posted a
>>> proposal patch for a DRM AVHWFramesContext too.
>> why not just add a FD to the AVBufferRef and let the user decide whether
>> to use it or not?
> Because there's too much framework-y stuff in ffmpeg that expects
> AVHWFramesContext. It's basically needed to do anything with it, and
> avoids ad-hoc approaches the old hwaccel API was full of.

understood...so at some point I will have to use the AVHWFramesContext 
(to integrate dmabuf)...will add it to my list.
thanks