On Wed, 2018-02-07 at 10:31 +0800, Jun Zhao wrote:
>
> On 2018/2/6 16:17, Haihao Xiang wrote:
> > It is possible B frame is not supported for VAEntrypointEncSliceLP and
> > the underlying driver has advertised it, so it is better to disable B
> > frame instead of returning error for this case
> >
> > Signed-off-by: Haihao Xiang <haihao.xi...@intel.com>
> > ---
> > libavcodec/vaapi_encode.c | 7 +++----
> > 1 file changed, 3 insertions(+), 4 deletions(-)
> >
> > diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
> > index 550ea47991d..e371f5761ee 100644
> > --- a/libavcodec/vaapi_encode.c
> > +++ b/libavcodec/vaapi_encode.c
> > @@ -1094,10 +1094,9 @@ static av_cold int
> > vaapi_encode_config_attributes(AVCodecContext *avctx)
> > goto fail;
> > }
> > if (avctx->max_b_frames > 0 && ref_l1 < 1) {
> > - av_log(avctx, AV_LOG_ERROR, "B frames are not "
> > - "supported (%#x).\n", attr[i].value);
> > - err = AVERROR(EINVAL);
> > - goto fail;
> > + av_log(avctx, AV_LOG_WARNING, "B frames are not "
> > + "supported (%#x) by the underlying driver.\n",
> > attr[i].value);
> > + avctx->max_b_frames = 0;
>
> I think check b frames when enable low_power in vaapi_encode_xxx_init()
> more better.
VAConfigAttribEncMaxRefFrames is applicable for other CODECs and non-low power
mode. so I think it is better to handle this case in vaapi_encoder.c
Thanks
Haihao
> > }
> > }
> > break;
>
>
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