2017-11-18 18:35 GMT+01:00 Rafal Dabrowa <fatwild...@gmail.com>:
> For performance testing the following command was used:
>
> time ./ffmpeg -hide_banner -i ~/bbb-1280x720-cfg06.mkv -f yuv4mpegpipe -
> >/dev/null
An alternative is:
./ffmpeg -benchmark -i ~/bbb-1280x720-cfg06.mkv -f null -
> The video file was pre-read before test to minimize disk reads during testing.
> Program execution time without optimization was as follows:
>
> real 11m48.576s
> user 43m8.111s
> sys 0m12.469s
>
> Execution time with optimizations:
>
> real 6m17.046s
> user 21m19.792s
> sys 0m14.724s
Looks impressive.
> +av_cold void ff_hevc_dsp_init_aarch64(HEVCDSPContext *c, const int bit_depth)
> +{
> + int cpu_flags = av_get_cpu_flags();
> +
> + if (have_neon(cpu_flags) && bit_depth == 8) {
> + NEON8_FNASSIGN(c->put_hevc_epel, 0, 0, pel_pixels);
> + NEON8_FNASSIGN(c->put_hevc_epel, 0, 1, epel_h);
> + NEON8_FNASSIGN(c->put_hevc_epel, 1, 0, epel_v);
> + NEON8_FNASSIGN(c->put_hevc_epel, 1, 1, epel_hv);
> + NEON8_FNASSIGN(c->put_hevc_epel_uni, 1, 0, epel_uni_v);
> + NEON8_FNASSIGN(c->put_hevc_epel_uni, 1, 1, epel_uni_hv);
> + NEON8_FNASSIGN(c->put_hevc_epel_bi, 0, 0, pel_bi_pixels);
> + NEON8_FNASSIGN(c->put_hevc_epel_bi, 0, 1, epel_bi_h);
> + NEON8_FNASSIGN(c->put_hevc_epel_bi, 1, 0, epel_bi_v);
> + NEON8_FNASSIGN(c->put_hevc_epel_bi, 1, 1, epel_bi_hv);
> + NEON8_FNASSIGN(c->put_hevc_qpel, 0, 0, pel_pixels);
> + NEON8_FNASSIGN(c->put_hevc_qpel, 0, 1, qpel_h);
> + NEON8_FNASSIGN(c->put_hevc_qpel, 1, 0, qpel_v);
> + NEON8_FNASSIGN(c->put_hevc_qpel, 1, 1, qpel_hv);
> + NEON8_FNASSIGN(c->put_hevc_qpel_uni, 0, 1, qpel_uni_h);
> + NEON8_FNASSIGN(c->put_hevc_qpel_uni, 1, 0, qpel_uni_v);
> + NEON8_FNASSIGN(c->put_hevc_qpel_uni, 1, 1, qpel_uni_hv);
> + NEON8_FNASSIGN(c->put_hevc_qpel_bi, 0, 0, pel_bi_pixels);
> + NEON8_FNASSIGN(c->put_hevc_qpel_bi, 0, 1, qpel_bi_h);
> + NEON8_FNASSIGN(c->put_hevc_qpel_bi, 1, 0, qpel_bi_v);
> + NEON8_FNASSIGN(c->put_hevc_qpel_bi, 1, 1, qpel_bi_hv);
I wonder if it would have made sense to test and send that patches
in smaller portions, so that those with possible improvements
can be identified.
Thank you, Carl Eugen
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