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| author | Martin Storsjö <martin@martin.st> | 2017-01-14 20:49:19 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2017-03-11 13:14:50 +0200 |
| commit | 3fbbad29847c79f422128ad88f174c53a5f6c449 (patch) | |
| tree | 8a216f6a2b93a2a706384540d89d134a14539bc6 /libavcodec/vc1.c | |
| parent | dda45c087b2c09ba9e485c51ff9c8f2aaca709a9 (diff) | |
| download | ffmpeg-3fbbad29847c79f422128ad88f174c53a5f6c449.tar.gz | |
arm/aarch64: vp9lpf: Keep the comparison to E within 8 bit
The theoretical maximum value of E is 193, so we can just
saturate the addition to 255.
Before: Cortex A7 A8 A9 A53 A53/AArch64
vp9_loop_filter_v_4_8_neon: 143.0 127.7 114.8 88.0 87.7
vp9_loop_filter_v_8_8_neon: 241.0 197.2 173.7 140.0 136.7
vp9_loop_filter_v_16_8_neon: 497.0 419.5 379.7 293.0 275.7
vp9_loop_filter_v_16_16_neon: 965.2 818.7 731.4 579.0 452.0
After:
vp9_loop_filter_v_4_8_neon: 136.0 125.7 112.6 84.0 83.0
vp9_loop_filter_v_8_8_neon: 234.0 195.5 171.5 136.0 133.7
vp9_loop_filter_v_16_8_neon: 490.0 417.5 377.7 289.0 271.0
vp9_loop_filter_v_16_16_neon: 951.2 814.7 732.3 571.0 446.7
This is cherrypicked from libav commit
c582cb8537367721bb399a5d01b652c20142b756.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/vc1.c')
0 files changed, 0 insertions, 0 deletions