RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-01-30 11:24:17 +00:00
Code Issues Projects Releases Wiki Activity

arm/aarch64: vp9lpf: Calculate !hev directly

Browse Source 
Previously we first calculated hev, and then negated it.

Since we were able to schedule the negation in the middle
of another calculation, we don't see any gain in all cases.

Before:                     Cortex A7      A8      A9     A53  A53/AArch64
vp9_loop_filter_v_4_8_neon:     147.0   129.0   115.8    89.0         88.7
vp9_loop_filter_v_8_8_neon:     242.0   198.5   174.7   140.0        136.7
vp9_loop_filter_v_16_8_neon:    500.0   419.5   382.7   293.0        275.7
vp9_loop_filter_v_16_16_neon:   971.2   825.5   731.5   579.0        453.0
After:
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

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2017-01-12 16:52:33 +02:00
parent 3fcf788fbb
commit e1f9de86f4
2 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/aarch64/vp9lpf_neon.S
View File

@ -292,7 +292,7 @@
.if \mix != 0
sxtl v1.8h, v1.8b
.endif
cmhi v5\sz, v5\sz, v3\sz // hev
cmhs v5\sz, v3\sz, v5\sz // !hev
.if \wd == 8
// If a 4/8 or 8/4 mix is used, clear the relevant half of v6
.if \mix != 0
@ -306,11 +306,10 @@
.elseif \wd == 8
bic v4\sz, v4\sz, v6\sz // fm && !flat8in
.endif
mvn v5\sz, v5\sz // !hev
and v5\sz, v5\sz, v4\sz // !hev && fm && !flat8in
.if \wd == 16
and v7\sz, v7\sz, v6\sz // flat8out && flat8in && fm
.endif
and v5\sz, v5\sz, v4\sz // !hev && fm && !flat8in
mul_sz \tmp3\().8h, \tmp4\().8h, \tmp3\().8h, \tmp4\().8h, \tmp5\().8h, \tmp5\().8h, \sz // 3 * (q0 - p0)
bic \tmp1\sz, \tmp1\sz, v5\sz // if (!hev) av_clip_int8 = 0

5
libavcodec/arm/vp9lpf_neon.S
View File

@ -141,7 +141,7 @@
.if \wd == 8
vcle.u8 d6, d6, d0 @ flat8in
.endif
vcgt.u8 d5, d5, d3 @ hev
vcle.u8 d5, d5, d3 @ !hev
.if \wd == 8
vand d6, d6, d4 @ flat8in && fm
.endif
@ -151,11 +151,10 @@
.elseif \wd == 8
vbic d4, d4, d6 @ fm && !flat8in
.endif
vmvn d5, d5 @ !hev
vand d5, d5, d4 @ !hev && fm && !flat8in
.if \wd == 16
vand d7, d7, d6 @ flat8out && flat8in && fm
.endif
vand d5, d5, d4 @ !hev && fm && !flat8in
vmul.s16 \tmpq2, \tmpq2, \tmpq3 @ 3 * (q0 - p0)
vbic \tmp1, \tmp1, d5 @ if (!hev) av_clip_int8 = 0