[Bug 728438] v4l2: Implement a v4l2 video encoder

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=728438
  GStreamer | gst-plugins-good | git

--- Comment #9 from ayaka <lxr1234 at hotmail.com> 2014-04-28 08:08:39 UTC ---
(In reply to comment #6)
> (In reply to comment #5)
> > gstv4l2videoenc.c:558:gst_v4l2_video_enc_handle_frame:<v4l2video9enc0> erro
> > r: Failed to allocate required memory.
> > 0:00:02.883168960   336    0xde350 WARN            v4l2videoenc
> > gstv4l2videoenc.c:558:gst_v4l2_video_enc_handle_frame:<v4l2video9enc0> erro
> > r: Buffer pool activation failed
> > 
> > about that problem, it is causing by the try to reqbuf while the count = 0,
> > in s5p-mfc, the decoder will release the buffer but encoder won't.
> 
> This looks like a bug in the driver, calling reqbuf(0) should never fail
> according to the v4l2 spec. This issue is most likely fixed in recent kernel, I
> would suggest to search for a backport. If you'd like to share your work, for a
> little more transparency, you may just post an URI to it, in a comment or
> through the "Add Bug URLs" form.

And please review 
https://github.com/hizukiayaka/gst-plugins-good/commit/0c94a99f34967f9cc14ee94b2f880896e0cf27fe
Although it doesn't have any effect here, but it will avoid the future problem.

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