Offer to Implement VAAPI/VDPAU support in mesa/etnaviv for the CODA VPU

[Luís Mendes]

Hi Lucas,

I was able to play the video with CODA support in X windows like you said.
I used the following command line:

gst-launch-1.0 filesrc location=/home/ubuntu/trailer_1080p_h264_mp3.avi ! \
avidemux ! h264parse ! v4l2video1dec capture-io-mode=dmabuf ! \
 xvimagesink device=1 sync=0

The video does play, but it is like in slow motion, I don't know why... it
is just using a single core at 45% core utilization only.

Regards,
Luís

On Wed, Nov 8, 2017 at 2:45 PM, Luís Mendes <luis.p.mendes at gmail.com> wrote:

> Hi Lucas,
>
> Ok, great, that's good news! I'll try it, but I still think that a
> VDPAU/VAAPI driver would be nice to increase compatibility with standard
> video player applications like VLC for instance.
>
> I could give a try at developing a VDPAU or VAAPI driver... at some point
> I may need to ask some details about mesa or inner driver workings, but
> that would be it.
>
> What is your opinion about having such a feature?
>
> Regards,
> Luís
>
> On Wed, Nov 8, 2017 at 2:33 PM, Lucas Stach <l.stach at pengutronix.de>
> wrote:
>
>> Am Mittwoch, den 08.11.2017, 14:24 +0000 schrieb Luís Mendes:
>> > Yesterday I tried Fabio's tutorial for enabling the VPU with
>> > gstreamer in console mode (https://imxdev.gitlab.io/tutorial/Decoding
>> > _video_with_a_mainline_kernel_on_i.MX6/). It was beautiful to see the
>> > i.MX6 playing a H.264 video smoothly in high definition.
>> > Then I tried to achieve the same under X, but it wasn't possible
>> > because drm is in use by X.
>> >
>> > That gave me the idea that implementing a functional VDPAU/VAAPI may
>> > not be so far away and that I may be able to implement such
>> > functionality in my spare time even if at a not so fast pace.
>> >
>> > What do you etnaviv guys say? Does it looks feasible?
>>
>> Just swap the kmssink at the end of the pipeline with a xvimagesink and
>> be done with it. The only complication is that the armada driver
>> exposes 2 XV adapters, one going to a KMS plane (not really functional
>> on i.MX6) and one using the GPU accel path. You need to choose the
>> right one by either configuring the right default in the xorg.conf or
>> using the device parameter for the xvimagesink.
>>
>> Regards,
>> Lucas
>>
>
>
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