[FFmpeg-cvslog] lavc/h264dsp: stick R-V V biweight to 16-bit
Rémi Denis-Courmont
git at videolan.org
Fri Aug 2 21:24:39 EEST 2024
ffmpeg | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Mon Jul 29 21:20:37 2024 +0300| [afd45c7ff74cc947d427202c1e9adc9ddc1987f8] | committer: Rémi Denis-Courmont
lavc/h264dsp: stick R-V V biweight to 16-bit
T-Head C908 (ns):
h264_biweight2_8_c: 2414.5
h264_biweight2_8_rvv_i32: 701.8 (before)
h264_biweight2_8_rvv_i32: 468.5 (after)
h264_biweight4_8_c: 4655.3
h264_biweight4_8_rvv_i32: 1377.5 (before)
h264_biweight4_8_rvv_i32: 931.8 (after)
h264_biweight8_8_c: 9701.5
h264_biweight8_8_rvv_i32: 2896.0 (before)
h264_biweight8_8_rvv_i32: 2070.5 (after)
h264_biweight16_8_c: 18025.0
h264_biweight16_8_rvv_i32: 3460.8 (before)
h264_biweight16_8_rvv_i32: 1978.0 (after)
SpacemiT X60 (ns):
h264_biweight2_8_c: 2415.5
h264_biweight2_8_rvv_i32: 478.2 (before)
h264_biweight2_8_rvv_i32: 362.8 (after)
h264_biweight4_8_c: 4655.3
h264_biweight4_8_rvv_i32: 946.7 (before)
h264_biweight4_8_rvv_i32: 727.3 (after)
h264_biweight8_8_c: 9061.8
h264_biweight8_8_rvv_i32: 2071.7 (before)
h264_biweight8_8_rvv_i32: 1685.8 (after)
h264_biweight16_8_c: 18020.5
h264_biweight16_8_rvv_i32: 3457.2 (before)
h264_biweight16_8_rvv_i32: 1935.8 (after)
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=afd45c7ff74cc947d427202c1e9adc9ddc1987f8
---
libavcodec/riscv/h264dsp_rvv.S | 43 +++++++++++++++++++-----------------------
1 file changed, 19 insertions(+), 24 deletions(-)
diff --git a/libavcodec/riscv/h264dsp_rvv.S b/libavcodec/riscv/h264dsp_rvv.S
index a38bf7ef1d..0e08de43e4 100644
--- a/libavcodec/riscv/h264dsp_rvv.S
+++ b/libavcodec/riscv/h264dsp_rvv.S
@@ -56,22 +56,21 @@ func ff_h264_biweight_pixels_simple_8_rvv, zve32x
addi a7, a7, 1
ori a7, a7, 1
sll a7, a7, a4
+ addi a4, a4, 1
1:
- vsetvli zero, t6, e32, m4, ta, ma
+ vsetvli zero, t6, e16, m2, ta, ma
vle8.v v8, (a0)
addi a3, a3, -1
vle8.v v12, (a1)
add a1, a1, a2
vmv.v.x v16, a7
- vsetvli zero, zero, e16, m2, ta, ma
- vzext.vf2 v24, v8
- vzext.vf2 v28, v12
- vwmaccsu.vx v16, a5, v24
- vwmaccsu.vx v16, a6, v28
- vnclip.wx v16, v16, a4
+ vsetvli zero, zero, e8, m1, ta, ma
+ vwmaccsu.vx v16, a5, v8
+ vwmaccsu.vx v16, a6, v12
+ vsetvli zero, zero, e16, m2, ta, ma
vmax.vx v16, v16, zero
vsetvli zero, zero, e8, m1, ta, ma
- vnclipu.wi v8, v16, 1
+ vnclipu.wx v8, v16, a4
vse8.v v8, (a0)
add a0, a0, a2
bnez a3, 1b
@@ -121,33 +120,29 @@ func ff_h264_biweight_pixels_8_rvv, zve32x
addi a7, a7, 1
ori a7, a7, 1
sll a7, a7, a4
+ addi a4, a4, 1
1:
mv t0, a0
mv t1, a1
mv t5, t6
2:
- vsetvli t2, a3, e32, m8, ta, ma
+ vsetvli t2, a3, e16, m8, ta, ma
vlsseg2e8.v v0, (t0), a2
- vlsseg2e8.v v4, (t1), a2
+ vlsseg2e8.v v8, (t1), a2
addi t5, t5, -2
vmv.v.x v16, a7
vmv.v.x v24, a7
- vsetvli zero, zero, e16, m4, ta, ma
- vzext.vf2 v8, v0
- vzext.vf2 v12, v2
- vwmaccsu.vx v16, a5, v8
- vwmaccsu.vx v24, a5, v12
- vzext.vf2 v8, v4
- vzext.vf2 v12, v6
+ vsetvli zero, zero, e8, m4, ta, ma
+ vwmaccsu.vx v16, a5, v0
+ vwmaccsu.vx v24, a5, v4
vwmaccsu.vx v16, a6, v8
vwmaccsu.vx v24, a6, v12
- vnclip.wx v8, v16, a4
- vnclip.wx v12, v24, a4
- vmax.vx v8, v8, zero
- vmax.vx v12, v12, zero
- vsetvli zero, zero, e8, m2, ta, ma
- vnclipu.wi v0, v8, 1
- vnclipu.wi v2, v12, 1
+ vsetvli zero, zero, e16, m8, ta, ma
+ vmax.vx v16, v16, zero
+ vmax.vx v24, v24, zero
+ vsetvli zero, zero, e8, m4, ta, ma
+ vnclipu.wx v0, v16, a4
+ vnclipu.wx v4, v24, a4
vssseg2e8.v v0, (t0), a2
addi t0, t0, 2
addi t1, t1, 2
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