> > On 06/02/18 08:17, Haihao Xiang wrote: > > > Although VAEntrypointEncSliceLP was added in old version of VAAPI, we > > > never implemented it for VAAPI H265 encoder before. so it is reasonable > > > to require VAAPI 1.0 > > > > > > Signed-off-by: Haihao Xiang <haihao.xi...@intel.com> > > > --- > > > libavcodec/vaapi_encode_h265.c | 18 +++++++++++++++++- > > > 1 file changed, 17 insertions(+), 1 deletion(-) > > > > > > diff --git a/libavcodec/vaapi_encode_h265.c > > > b/libavcodec/vaapi_encode_h265.c > > > index f3b4f6c7e26..efe1148127f 100644 > > > --- a/libavcodec/vaapi_encode_h265.c > > > +++ b/libavcodec/vaapi_encode_h265.c > > > @@ -65,6 +65,7 @@ typedef struct VAAPIEncodeH265Options { > > > int aud; > > > int profile; > > > int level; > > > + int low_power; > > > } VAAPIEncodeH265Options; > > > > > > > > > @@ -914,7 +915,18 @@ static av_cold int > > > vaapi_encode_h265_init(AVCodecContext *avctx) > > > avctx->profile); > > > return AVERROR(EINVAL); > > > } > > > - ctx->va_entrypoint = VAEntrypointEncSlice; > > > + > > > + if (opt->low_power) { > > > +#if VA_CHECK_VERSION(1, 0, 0) > > > + ctx->va_entrypoint = VAEntrypointEncSliceLP; > > > +#else > > > + av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not " > > > + "supported with this VAAPI version.\n"); > > > + return AVERROR(EINVAL); > > > +#endif > > > + } else { > > > + ctx->va_entrypoint = VAEntrypointEncSlice; > > > + } > > > > > > if (avctx->bit_rate > 0) { > > > if (avctx->rc_max_rate == avctx->bit_rate) > > > @@ -986,6 +998,10 @@ static const AVOption vaapi_encode_h265_options[] = { > > > { LEVEL("6.2", 186) }, > > > #undef LEVEL > > > > > > + { "low_power", "Use low-power encoding mode (experimental: only > > > supported " > > > > Do you want to copy this comment? > > > > Actually I want to delete the comments in (), but the limitation for HEVC low > power encoding still exist. It would be better to add some VAAPI attributes to > query the capability/limitation etc. > > > > > + "on some platforms, does not support all features)", > > > + OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, > > > + > > > { NULL }, > > > }; > > > > > > > > > > How can I test this (and the following patch)? It doesn't appear to exist > > on > > any current platform/driver. > > > > Cannon Lake support HEVC low power encoding, do you have this > platform? https:/ > /github.com/intel/media-driver/ should support this feature but it isn't ready > in https://github.com/intel/intel-vaapi-driver. > > > I don't like how this code is being copied around, but I guess it would work > > for now. I'll look into doing something more sensible here. > > > > I also dislike duplicated code. I wanted to add some common options for VAAPI > encoder in FFmpeg, such as QP. However low power encoding is not available for > some codecs, such as VP8, so I copied&pasted the code here. > > Another thing is a driver may not support both VAEntrypointEncSliceLP and > VAEntrypointEncSlice, so I want to change the value range of low_power to -1, > 0, > 1. -1 means auto mode, FFmpeg-vaapi will select the first applicable > entrypoint, > what is your comment for this proposal?
Hi Mark, Do you have any comment to the above proposal? https://github.com/xhaihao/media- driver only supports VAEntrypointEncSliceLP for vp9 on Cannonlake. With the above proposal, the end user doesn't need to know which entrypoint is supported by the underly driver. Thank Haihao _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel