imx6 / mainline linux / basic problems

[Bing Song]

Sorry, I have some basic question:

1. v4l2video1dec is video decoder plugin based on V4L2 mem to mem API? And the backend is VPU decoder on imx6? VPU decoder is implemented in Kernel? There is VPU lib in user space, do you use VPU lib?

2. What is the best implement of video decoder based on hardware? There are VA-API, CODA, V4L2 mem to mem, also have vpudec based on gstvideodecoder base.

3. vpudec can get best performance and can link with V4L2 output, also can link with videoconvert_ipu and glimangsink, all can get best performance. Should avoid video frame copy as video decoder will use hardware buffer which is non-cachable buffer. IPU and G2D can used to do CSC and resize.

Regards,
Song Bing.

-----Original Message-----
From: gstreamer-devel [mailto:gstreamer-devel-bounces at lists.freedesktop.org] On Behalf Of Ian Molton
Sent: Friday, February 06, 2015 11:25 PM
To: Discussion of the development of and with GStreamer
Subject: Re: imx6 / mainline linux / basic problems

On 06/02/15 13:26, Jean-Michel Hautbois wrote:
> Hi Ian,

Hi!

>> You mentioned that you have been testing this without gstreamer - 
>> what tool are you using to do so?
>
> v4l2-ctl is the one.

Ok, I might be being dense here, but I cant see how.

Does it have some magic option for generating test data? or are you feeding that in from somewhere else?

I'm a bit new to debugging v4l stuff.

-Ian
_______________________________________________
gstreamer-devel mailing list
gstreamer-devel at lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel