[libre-riscv-dev] [Bug 137] NLNet 2019 Video Acceleration Proposal

[bugzilla-daemon at libre-riscv.org]

http://bugs.libre-riscv.org/show_bug.cgi?id=137

--- Comment #8 from cand at gmx.com ---
Rough relative complexities:

MP3                     1       1%
AC3                     1       1%
Vorbis                  1       1%
Opus                    1       1%

MJPEG (JPEG)            2       2%
MPEG1/2                 2       2%
MPEG4 ASP (xvid)        4       5%
H.264                   10      11%
H.265                   20      23%
VP8                     8       9%
VP9                     10      11%
AV1                     28      32%

This doesn't translate well to budget though, no sense in spending a third on
AV1. Perhaps a more sensible goal would be to target the largest hot spots of
each, with only smaller budget differences due to complexity.

Another point to consider is that while ffmpeg is the prime lib, parts of accel
code made for ffmpeg aren't really usable in the various standalone libs.
Different structures, etc. In order to not write things twice, some decisions
need to be made on which upstreams particularly matter.

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