--bench on AWS Graviton:
hevc_sao_band_8x8_8_c: 317.5
hevc_sao_band_8x8_8_neon: 97.5
hevc_sao_band_16x16_8_c: 1115.0
hevc_sao_band_16x16_8_neon: 322.7
hevc_sao_band_32x32_8_c: 4599.2
hevc_sao_band_32x32_8_neon: 1246.2
hevc_sao_band_48x48_8_c: 10021.7
hevc_sao_band_48x48_8_neon: 2740.5
hevc_sao_band_64x64_8_c: 17635.0
hevc_sao_band_64x64_8_neon: 4875.7
Signed-off-by: J. Dekker <j...@itanimul.li>
---
libavcodec/aarch64/hevcdsp_init_aarch64.c | 6 +++++-
libavcodec/aarch64/hevcdsp_sao_neon.S | 9 ++++++---
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/libavcodec/aarch64/hevcdsp_init_aarch64.c
b/libavcodec/aarch64/hevcdsp_init_aarch64.c
index b93cec9e44..2002530266 100644
--- a/libavcodec/aarch64/hevcdsp_init_aarch64.c
+++ b/libavcodec/aarch64/hevcdsp_init_aarch64.c
@@ -77,7 +77,11 @@ av_cold void ff_hevc_dsp_init_aarch64(HEVCDSPContext *c,
const int bit_depth)
c->idct_dc[1] = ff_hevc_idct_8x8_dc_8_neon;
c->idct_dc[2] = ff_hevc_idct_16x16_dc_8_neon;
c->idct_dc[3] = ff_hevc_idct_32x32_dc_8_neon;
- c->sao_band_filter[0] = ff_hevc_sao_band_filter_8x8_8_neon;
+ c->sao_band_filter[0] =
+ c->sao_band_filter[1] =
+ c->sao_band_filter[2] =
+ c->sao_band_filter[3] =
+ c->sao_band_filter[4] = ff_hevc_sao_band_filter_8x8_8_neon;
c->sao_edge_filter[0] = ff_hevc_sao_edge_filter_8x8_8_neon;
c->sao_edge_filter[1] =
c->sao_edge_filter[2] =
diff --git a/libavcodec/aarch64/hevcdsp_sao_neon.S
b/libavcodec/aarch64/hevcdsp_sao_neon.S
index c4b931aab7..263747149f 100644
--- a/libavcodec/aarch64/hevcdsp_sao_neon.S
+++ b/libavcodec/aarch64/hevcdsp_sao_neon.S
@@ -35,6 +35,7 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1
stp xzr, xzr, [sp, #32]
stp xzr, xzr, [sp, #48]
mov w8, #4
+ sxtw x6, w6
0:
ldrsh x9, [x4, x8, lsl #1] // x9 = sao_offset_val[k+1]
subs w8, w8, #1
@@ -44,8 +45,10 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1
bne 0b
ld1 {v16.16b-v19.16b}, [sp], #64
movi v20.8h, #1
+ sub x2, x2, x6 // stride_dst - width
+ sub x3, x3, x6 // stride_src - width
1: // beginning of line
- mov w8, w6
+ mov x8, x6
2:
// Simple layout for accessing 16bit values
// with 8bit LUT.
@@ -56,7 +59,7 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1
// +----------------------------------->
// i-0 i-1 i-2 i-3
// dst[x] = av_clip_pixel(src[x] + offset_table[src[x] >> shift]);
- ld1 {v2.8b}, [x1]
+ ld1 {v2.8b}, [x1], #8
// load src[x]
uxtl v0.8h, v2.8b
// >> shift
@@ -74,7 +77,7 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1
// clip + narrow
sqxtun v4.8b, v1.8h
// store
- st1 {v4.8b}, [x0]
+ st1 {v4.8b}, [x0], #8
// done 8 pixels
subs w8, w8, #8
bne 2b
--
2.30.1 (Apple Git-130)
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