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| author | Martin Storsjö <martin@martin.st> | 2019-03-30 01:02:24 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2019-04-16 13:46:13 +0300 |
| commit | 0282f6f3d5916fdd169c3af6c3250ed214308f5c (patch) | |
| tree | 3cea200fbf206581f879d3c59189e22b87ae927c /src/loopfilter.h | |
| parent | 204bf2115ff91d1a594ab47c7d8adaf2b1b80b07 (diff) | |
arm64: loopfilter: Implement NEON loop filters
The exact relative speedup compared to C code is a bit vague and hard
to measure, depending on eactly how many filtered blocks are skipped,
as the NEON version always filters 16 pixels at a time, while the
C code can skip processing individual 4 pixel blocks.
Additionally, the checkasm benchmarking code runs the same function
repeatedly on the same buffer, which can make the filter take
different codepaths on each run, as the function updates the buffer
which will be used as input for the next run.
If tweaking the checkasm test data to try to avoid skipped blocks,
the relative speedups compared to C is between 2x and 5x, while
it is around 1x to 4x with the current checkasm test as such.
Benchmark numbers from a tweaked checkasm that avoids skipped
blocks:
Cortex A53 A72 A73
lpf_h_sb_uv_w4_8bpc_c: 2954.7 1399.3 1655.3
lpf_h_sb_uv_w4_8bpc_neon: 895.5 650.8 692.0
lpf_h_sb_uv_w6_8bpc_c: 3879.2 1917.2 2257.7
lpf_h_sb_uv_w6_8bpc_neon: 1125.6 759.5 838.4
lpf_h_sb_y_w4_8bpc_c: 6711.0 3275.5 3913.7
lpf_h_sb_y_w4_8bpc_neon: 1744.0 1342.1 1351.5
lpf_h_sb_y_w8_8bpc_c: 10695.7 6155.8 6638.9
lpf_h_sb_y_w8_8bpc_neon: 2146.5 1560.4 1609.1
lpf_h_sb_y_w16_8bpc_c: 11355.8 6292.0 6995.9
lpf_h_sb_y_w16_8bpc_neon: 2475.4 1949.6 1968.4
lpf_v_sb_uv_w4_8bpc_c: 2639.7 1204.8 1425.9
lpf_v_sb_uv_w4_8bpc_neon: 510.7 351.4 334.7
lpf_v_sb_uv_w6_8bpc_c: 3468.3 1757.1 2021.5
lpf_v_sb_uv_w6_8bpc_neon: 625.0 415.0 397.8
lpf_v_sb_y_w4_8bpc_c: 5428.7 2731.7 3068.5
lpf_v_sb_y_w4_8bpc_neon: 1172.6 792.1 768.0
lpf_v_sb_y_w8_8bpc_c: 8946.1 4412.8 5121.0
lpf_v_sb_y_w8_8bpc_neon: 1565.5 1063.6 1062.7
lpf_v_sb_y_w16_8bpc_c: 8978.9 4411.7 5112.0
lpf_v_sb_y_w16_8bpc_neon: 1775.0 1288.1 1236.7
Diffstat (limited to 'src/loopfilter.h')
| -rw-r--r-- | src/loopfilter.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/loopfilter.h b/src/loopfilter.h index 7f8fd13..c159050 100644 --- a/src/loopfilter.h +++ b/src/loopfilter.h @@ -53,6 +53,7 @@ typedef struct Dav1dLoopFilterDSPContext { } Dav1dLoopFilterDSPContext; bitfn_decls(void dav1d_loop_filter_dsp_init, Dav1dLoopFilterDSPContext *c); +bitfn_decls(void dav1d_loop_filter_dsp_init_arm, Dav1dLoopFilterDSPContext *c); bitfn_decls(void dav1d_loop_filter_dsp_init_x86, Dav1dLoopFilterDSPContext *c); #endif /* DAV1D_SRC_LOOPFILTER_H */ |