How can I test the weight and biweight of H.264? I haven't seen the related
test code..
tests/checkasm/checkasm --bench --test=h264dsp
Rémi Denis-Courmont <r...@remlab.net> 于2024年8月15日周四 16:10写道：
>
>
> Le 3 août 2024 13:30:34 GMT+03:00, u...@foxmail.com a écrit :
> >From: sunyuechi <sunyue...@iscas.ac.cn>
> >
> > C908 X60
> >avg_8_2x2_c : 1.2 1.0
> >avg_8_2x2_rvv_i32 : 0.7 0.7
> >avg_8_2x4_c : 2.0 2.2
> >avg_8_2x4_rvv_i32 : 1.2 1.2
> >avg_8_2x8_c : 3.7 4.0
> >avg_8_2x8_rvv_i32 : 1.7 1.5
> >avg_8_2x16_c : 7.2 7.7
> >avg_8_2x16_rvv_i32 : 3.0 2.7
> >avg_8_2x32_c : 14.2 15.2
> >avg_8_2x32_rvv_i32 : 5.5 5.0
> >avg_8_2x64_c : 51.0 43.7
> >avg_8_2x64_rvv_i32 : 39.2 29.7
> >avg_8_2x128_c : 100.5 79.2
> >avg_8_2x128_rvv_i32 : 79.7 68.2
> >avg_8_4x2_c : 1.7 2.0
> >avg_8_4x2_rvv_i32 : 1.0 0.7
> >avg_8_4x4_c : 3.5 3.7
> >avg_8_4x4_rvv_i32 : 1.2 1.2
> >avg_8_4x8_c : 6.7 7.0
> >avg_8_4x8_rvv_i32 : 1.7 1.5
> >avg_8_4x16_c : 13.5 14.0
> >avg_8_4x16_rvv_i32 : 3.0 2.7
> >avg_8_4x32_c : 26.2 27.7
> >avg_8_4x32_rvv_i32 : 5.5 4.7
> >avg_8_4x64_c : 73.0 73.7
> >avg_8_4x64_rvv_i32 : 39.0 32.5
> >avg_8_4x128_c : 143.0 137.2
> >avg_8_4x128_rvv_i32 : 72.7 68.0
> >avg_8_8x2_c : 3.5 3.5
> >avg_8_8x2_rvv_i32 : 1.0 0.7
> >avg_8_8x4_c : 6.2 6.5
> >avg_8_8x4_rvv_i32 : 1.5 1.0
> >avg_8_8x8_c : 12.7 13.2
> >avg_8_8x8_rvv_i32 : 2.0 1.5
> >avg_8_8x16_c : 25.0 26.5
> >avg_8_8x16_rvv_i32 : 3.2 2.7
> >avg_8_8x32_c : 50.0 52.7
> >avg_8_8x32_rvv_i32 : 6.2 5.0
> >avg_8_8x64_c : 118.7 122.5
> >avg_8_8x64_rvv_i32 : 40.2 31.5
> >avg_8_8x128_c : 236.7 220.2
> >avg_8_8x128_rvv_i32 : 85.2 67.7
> >avg_8_16x2_c : 6.2 6.7
> >avg_8_16x2_rvv_i32 : 1.2 0.7
> >avg_8_16x4_c : 12.5 13.0
> >avg_8_16x4_rvv_i32 : 1.7 1.0
> >avg_8_16x8_c : 24.5 26.0
> >avg_8_16x8_rvv_i32 : 3.0 1.7
> >avg_8_16x16_c : 49.0 51.5
> >avg_8_16x16_rvv_i32 : 5.5 3.0
> >avg_8_16x32_c : 97.5 102.5
> >avg_8_16x32_rvv_i32 : 10.5 5.5
> >avg_8_16x64_c : 213.7 222.0
> >avg_8_16x64_rvv_i32 : 48.5 34.2
> >avg_8_16x128_c : 434.7 420.0
> >avg_8_16x128_rvv_i32 : 97.7 74.0
> >avg_8_32x2_c : 12.2 12.7
> >avg_8_32x2_rvv_i32 : 1.5 1.0
> >avg_8_32x4_c : 24.5 25.5
> >avg_8_32x4_rvv_i32 : 3.0 1.7
> >avg_8_32x8_c : 48.5 50.7
> >avg_8_32x8_rvv_i32 : 5.2 2.7
> >avg_8_32x16_c : 96.7 101.2
> >avg_8_32x16_rvv_i32 : 10.2 5.0
> >avg_8_32x32_c : 192.7 202.2
> >avg_8_32x32_rvv_i32 : 19.7 9.5
> >avg_8_32x64_c : 427.5 426.5
> >avg_8_32x64_rvv_i32 : 64.2 18.2
> >avg_8_32x128_c : 816.5 821.0
> >avg_8_32x128_rvv_i32 : 135.2 75.5
> >avg_8_64x2_c : 24.0 25.2
> >avg_8_64x2_rvv_i32 : 2.7 1.5
> >avg_8_64x4_c : 48.2 50.5
> >avg_8_64x4_rvv_i32 : 5.0 2.7
> >avg_8_64x8_c : 96.0 100.7
> >avg_8_64x8_rvv_i32 : 9.7 4.5
> >avg_8_64x16_c : 207.7 201.2
> >avg_8_64x16_rvv_i32 : 19.0 9.0
> >avg_8_64x32_c : 383.2 402.0
> >avg_8_64x32_rvv_i32 : 37.5 17.5
> >avg_8_64x64_c : 837.2 828.7
> >avg_8_64x64_rvv_i32 : 84.7 35.5
> >avg_8_64x128_c : 1640.7 1640.2
> >avg_8_64x128_rvv_i32 : 206.0 153.0
> >avg_8_128x2_c : 48.7 51.0
> >avg_8_128x2_rvv_i32 : 5.2 2.7
> >avg_8_128x4_c : 96.7 101.5
> >avg_8_128x4_rvv_i32 : 10.2 5.0
> >avg_8_128x8_c : 192.2 202.0
> >avg_8_128x8_rvv_i32 : 19.7 9.2
> >avg_8_128x16_c : 400.7 403.2
> >avg_8_128x16_rvv_i32 : 38.7 18.5
> >avg_8_128x32_c : 786.7 805.7
> >avg_8_128x32_rvv_i32 : 77.0 36.2
> >avg_8_128x64_c : 1615.5 1655.5
> >avg_8_128x64_rvv_i32 : 189.7 80.7
> >avg_8_128x128_c : 3182.0 3238.0
> >avg_8_128x128_rvv_i32 : 397.5 308.5
> >w_avg_8_2x2_c : 1.7 1.2
> >w_avg_8_2x2_rvv_i32 : 1.2 1.0
> >w_avg_8_2x4_c : 2.7 2.7
> >w_avg_8_2x4_rvv_i32 : 1.7 1.5
> >w_avg_8_2x8_c : 21.7 4.7
> >w_avg_8_2x8_rvv_i32 : 2.7 2.5
> >w_avg_8_2x16_c : 9.5 9.2
> >w_avg_8_2x16_rvv_i32 : 4.7 4.2
> >w_avg_8_2x32_c : 19.0 18.7
> >w_avg_8_2x32_rvv_i32 : 9.0 8.0
> >w_avg_8_2x64_c : 62.0 50.2
> >w_avg_8_2x64_rvv_i32 : 47.7 33.5
> >w_avg_8_2x128_c : 116.7 87.7
> >w_avg_8_2x128_rvv_i32 : 80.0 69.5
> >w_avg_8_4x2_c : 2.5 2.5
> >w_avg_8_4x2_rvv_i32 : 1.2 1.0
> >w_avg_8_4x4_c : 4.7 4.5
> >w_avg_8_4x4_rvv_i32 : 1.7 1.7
> >w_avg_8_4x8_c : 9.0 8.7
> >w_avg_8_4x8_rvv_i32 : 2.7 2.5
> >w_avg_8_4x16_c : 17.7 17.5
> >w_avg_8_4x16_rvv_i32 : 4.7 4.2
> >w_avg_8_4x32_c : 35.0 35.0
> >w_avg_8_4x32_rvv_i32 : 9.0 8.0
> >w_avg_8_4x64_c : 100.5 84.5
> >w_avg_8_4x64_rvv_i32 : 42.2 33.7
> >w_avg_8_4x128_c : 203.5 151.2
> >w_avg_8_4x128_rvv_i32 : 83.0 69.5
> >w_avg_8_8x2_c : 4.5 4.5
> >w_avg_8_8x2_rvv_i32 : 1.2 1.2
> >w_avg_8_8x4_c : 8.7 8.7
> >w_avg_8_8x4_rvv_i32 : 2.0 1.7
> >w_avg_8_8x8_c : 17.0 17.0
> >w_avg_8_8x8_rvv_i32 : 3.2 2.5
> >w_avg_8_8x16_c : 34.0 33.5
> >w_avg_8_8x16_rvv_i32 : 5.5 4.2
> >w_avg_8_8x32_c : 86.0 67.5
> >w_avg_8_8x32_rvv_i32 : 10.5 8.0
> >w_avg_8_8x64_c : 187.2 149.5
> >w_avg_8_8x64_rvv_i32 : 45.0 35.5
> >w_avg_8_8x128_c : 342.7 290.0
> >w_avg_8_8x128_rvv_i32 : 108.7 70.2
> >w_avg_8_16x2_c : 8.5 8.2
> >w_avg_8_16x2_rvv_i32 : 2.0 1.2
> >w_avg_8_16x4_c : 16.7 16.7
> >w_avg_8_16x4_rvv_i32 : 3.0 1.7
> >w_avg_8_16x8_c : 33.2 33.5
> >w_avg_8_16x8_rvv_i32 : 5.5 3.0
> >w_avg_8_16x16_c : 66.2 66.7
> >w_avg_8_16x16_rvv_i32 : 10.5 5.0
> >w_avg_8_16x32_c : 132.5 131.0
> >w_avg_8_16x32_rvv_i32 : 20.0 9.7
> >w_avg_8_16x64_c : 340.0 283.5
> >w_avg_8_16x64_rvv_i32 : 60.5 37.2
> >w_avg_8_16x128_c : 641.2 597.5
> >w_avg_8_16x128_rvv_i32 : 118.7 77.7
> >w_avg_8_32x2_c : 16.5 16.7
> >w_avg_8_32x2_rvv_i32 : 3.2 1.7
> >w_avg_8_32x4_c : 33.2 33.2
> >w_avg_8_32x4_rvv_i32 : 5.5 2.7
> >w_avg_8_32x8_c : 66.0 62.5
> >w_avg_8_32x8_rvv_i32 : 10.5 5.0
> >w_avg_8_32x16_c : 131.5 132.0
> >w_avg_8_32x16_rvv_i32 : 20.2 9.5
> >w_avg_8_32x32_c : 261.7 272.0
> >w_avg_8_32x32_rvv_i32 : 39.7 18.0
> >w_avg_8_32x64_c : 575.2 545.5
> >w_avg_8_32x64_rvv_i32 : 105.5 58.7
> >w_avg_8_32x128_c : 1154.2 1088.0
> >w_avg_8_32x128_rvv_i32 : 207.0 98.0
> >w_avg_8_64x2_c : 33.0 33.0
> >w_avg_8_64x2_rvv_i32 : 6.2 2.7
> >w_avg_8_64x4_c : 65.5 66.0
> >w_avg_8_64x4_rvv_i32 : 11.5 5.0
> >w_avg_8_64x8_c : 131.2 132.5
> >w_avg_8_64x8_rvv_i32 : 22.5 9.5
> >w_avg_8_64x16_c : 268.2 262.5
> >w_avg_8_64x16_rvv_i32 : 44.2 18.0
> >w_avg_8_64x32_c : 561.5 528.7
> >w_avg_8_64x32_rvv_i32 : 88.0 35.2
> >w_avg_8_64x64_c : 1136.2 1124.0
> >w_avg_8_64x64_rvv_i32 : 222.0 82.2
> >w_avg_8_64x128_c : 2345.0 2312.7
> >w_avg_8_64x128_rvv_i32 : 423.0 190.5
> >w_avg_8_128x2_c : 65.7 66.5
> >w_avg_8_128x2_rvv_i32 : 11.2 5.5
> >w_avg_8_128x4_c : 131.2 132.2
> >w_avg_8_128x4_rvv_i32 : 22.0 10.2
> >w_avg_8_128x8_c : 263.5 312.0
> >w_avg_8_128x8_rvv_i32 : 43.2 19.7
> >w_avg_8_128x16_c : 528.7 526.2
> >w_avg_8_128x16_rvv_i32 : 85.5 39.5
> >w_avg_8_128x32_c : 1067.7 1062.7
> >w_avg_8_128x32_rvv_i32 : 171.7 78.2
> >w_avg_8_128x64_c : 2234.7 2168.7
> >w_avg_8_128x64_rvv_i32 : 400.0 159.0
> >w_avg_8_128x128_c : 4752.5 4295.0
> >w_avg_8_128x128_rvv_i32 : 757.7 365.5
> >---
> > libavcodec/riscv/vvc/Makefile | 2 +
> > libavcodec/riscv/vvc/vvc_mc_rvv.S | 287 +++++++++++++++++++++++++++++
> > libavcodec/riscv/vvc/vvcdsp_init.c | 72 ++++++++
> > libavcodec/vvc/dsp.c | 2 +
> > libavcodec/vvc/dsp.h | 1 +
> > 5 files changed, 364 insertions(+)
> > create mode 100644 libavcodec/riscv/vvc/Makefile
> > create mode 100644 libavcodec/riscv/vvc/vvc_mc_rvv.S
> > create mode 100644 libavcodec/riscv/vvc/vvcdsp_init.c
> >
> >diff --git a/libavcodec/riscv/vvc/Makefile b/libavcodec/riscv/vvc/Makefile
> >new file mode 100644
> >index 0000000000..582b051579
> >--- /dev/null
> >+++ b/libavcodec/riscv/vvc/Makefile
> >@@ -0,0 +1,2 @@
> >+OBJS-$(CONFIG_VVC_DECODER) += riscv/vvc/vvcdsp_init.o
> >+RVV-OBJS-$(CONFIG_VVC_DECODER) += riscv/vvc/vvc_mc_rvv.o
> >diff --git a/libavcodec/riscv/vvc/vvc_mc_rvv.S
> b/libavcodec/riscv/vvc/vvc_mc_rvv.S
> >new file mode 100644
> >index 0000000000..10e1bd67ee
> >--- /dev/null
> >+++ b/libavcodec/riscv/vvc/vvc_mc_rvv.S
> >@@ -0,0 +1,287 @@
> >+/*
> >+ * Copyright (c) 2024 Institue of Software Chinese Academy of Sciences
> (ISCAS).
> >+ *
> >+ * This file is part of FFmpeg.
> >+ *
> >+ * FFmpeg is free software; you can redistribute it and/or
> >+ * modify it under the terms of the GNU Lesser General Public
> >+ * License as published by the Free Software Foundation; either
> >+ * version 2.1 of the License, or (at your option) any later version.
> >+ *
> >+ * FFmpeg is distributed in the hope that it will be useful,
> >+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
> >+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> >+ * Lesser General Public License for more details.
> >+ *
> >+ * You should have received a copy of the GNU Lesser General Public
> >+ * License along with FFmpeg; if not, write to the Free Software
> >+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> >+ */
> >+
> >+#include "libavutil/riscv/asm.S"
> >+
> >+.macro vsetvlstatic8 w, vlen
> >+ .if \w == 2 && \vlen == 128
> >+ vsetivli zero, \w, e8, mf8, ta, ma
> >+ .elseif \w == 4 && \vlen == 128
> >+ vsetivli zero, \w, e8, mf4, ta, ma
> >+ .elseif \w == 8 && \vlen == 128
> >+ vsetivli zero, \w, e8, mf2, ta, ma
> >+ .elseif \w == 16 && \vlen == 128
> >+ vsetivli zero, \w, e8, m1, ta, ma
> >+ .elseif \w == 32 && \vlen == 128
> >+ li t0, \w
> >+ vsetvli zero, t0, e8, m2, ta, ma
> >+ .elseif \w <= 4 && \vlen == 256
> >+ vsetivli zero, \w, e8, mf8, ta, ma
> >+ .elseif \w == 8 && \vlen == 256
> >+ vsetivli zero, \w, e8, mf4, ta, ma
> >+ .elseif \w == 16 && \vlen == 256
> >+ vsetivli zero, \w, e8, mf2, ta, ma
> >+ .elseif \w == 32 && \vlen == 256
> >+ li t0, \w
> >+ vsetvli zero, t0, e8, m1, ta, ma
> >+ .elseif \w == 64 && \vlen == 256
> >+ li t0, \w
> >+ vsetvli zero, t0, e8, m2, ta, ma
> >+ .else
> >+ li t0, \w
> >+ vsetvli zero, t0, e8, m4, ta, ma
> >+ .endif
> >+.endm
> >+
> >+.macro vsetvlstatic16 w, vlen
> >+ .if \w == 2 && \vlen == 128
> >+ vsetivli zero, \w, e16, mf4, ta, ma
> >+ .elseif \w == 4 && \vlen == 128
> >+ vsetivli zero, \w, e16, mf2, ta, ma
> >+ .elseif \w == 8 && \vlen == 128
> >+ vsetivli zero, \w, e16, m1, ta, ma
> >+ .elseif \w == 16 && \vlen == 128
> >+ vsetivli zero, \w, e16, m2, ta, ma
> >+ .elseif \w == 32 && \vlen == 128
> >+ li t0, \w
> >+ vsetvli zero, t0, e16, m4, ta, ma
> >+ .elseif \w <= 4 && \vlen == 256
> >+ vsetivli zero, \w, e16, mf4, ta, ma
> >+ .elseif \w == 8 && \vlen == 256
> >+ vsetivli zero, \w, e16, mf2, ta, ma
> >+ .elseif \w == 16 && \vlen == 256
> >+ vsetivli zero, \w, e16, m1, ta, ma
> >+ .elseif \w == 32 && \vlen == 256
> >+ li t0, \w
> >+ vsetvli zero, t0, e16, m2, ta, ma
> >+ .elseif \w == 64 && \vlen == 256
> >+ li t0, \w
> >+ vsetvli zero, t0, e16, m4, ta, ma
> >+ .else
> >+ li t0, \w
> >+ vsetvli zero, t0, e16, m8, ta, ma
> >+ .endif
> >+.endm
> >+
> >+.macro vsetvlstatic32 w, vlen
> >+ .if \w == 2
> >+ vsetivli zero, \w, e32, mf2, ta, ma
> >+ .elseif \w == 4 && \vlen == 128
> >+ vsetivli zero, \w, e32, m1, ta, ma
> >+ .elseif \w == 8 && \vlen == 128
> >+ vsetivli zero, \w, e32, m2, ta, ma
> >+ .elseif \w == 16 && \vlen == 128
> >+ vsetivli zero, \w, e32, m4, ta, ma
> >+ .elseif \w == 4 && \vlen == 256
> >+ vsetivli zero, \w, e32, mf2, ta, ma
> >+ .elseif \w == 8 && \vlen == 256
> >+ vsetivli zero, \w, e32, m1, ta, ma
> >+ .elseif \w == 16 && \vlen == 256
> >+ vsetivli zero, \w, e32, m2, ta, ma
> >+ .elseif \w == 32 && \vlen == 256
> >+ li t0, \w
> >+ vsetvli zero, t0, e32, m4, ta, ma
> >+ .else
> >+ li t0, \w
> >+ vsetvli zero, t0, e32, m8, ta, ma
> >+ .endif
> >+.endm
> >+
> >+.macro avg w, vlen, id
> >+\id\w\vlen:
> >+.if \w < 128
> >+ vsetvlstatic16 \w, \vlen
> >+ addi t0, a2, 128*2
> >+ addi t1, a3, 128*2
> >+ add t2, a0, a1
> >+ vle16.v v0, (a2)
> >+ vle16.v v8, (a3)
> >+ addi a5, a5, -2
> >+ vle16.v v16, (t0)
> >+ vle16.v v24, (t1)
> >+ vadd.vv v8, v8, v0
> >+ vadd.vv v24, v24, v16
> >+ vmax.vx v8, v8, zero
> >+ vmax.vx v24, v24, zero
>
> With short widths, scaling vertically (rather than horizontally) with
> strides is likely faster. See also the h.264 weight and biweight functions,
> which provide a similar algorithm.
>
> >+ vsetvlstatic8 \w, \vlen
> >+ addi a2, a2, 128*4
> >+ vnclipu.wi v8, v8, 7
> >+ vnclipu.wi v24, v24, 7
> >+ addi a3, a3, 128*4
> >+ vse8.v v8, (a0)
> >+ vse8.v v24, (t2)
> >+ sh1add a0, a1, a0
> >+.else
> >+ addi a5, a5, -1
> >+ mv t1, a0
> >+ mv t2, a2
> >+ mv t3, a3
> >+ mv t4, a4
> >+1:
> >+ vsetvli t0, a4, e16, m8, ta, ma
> >+ sub a4, a4, t0
> >+ vle16.v v0, (a2)
> >+ vle16.v v8, (a3)
> >+ vadd.vv v8, v8, v0
> >+ vmax.vx v8, v8, zero
> >+ vsetvli zero, zero, e8, m4, ta, ma
> >+ vnclipu.wi v8, v8, 7
> >+ vse8.v v8, (a0)
> >+ sh1add a2, t0, a2
> >+ sh1add a3, t0, a3
> >+ add a0, a0, t0
> >+ bnez a4, 1b
> >+ add a0, t1, a1
> >+ addi a2, t2, 128*2
> >+ addi a3, t3, 128*2
> >+ mv a4, t4
> >+.endif
> >+ bnez a5, \id\w\vlen\()b
> >+ ret
> >+.endm
> >+
> >+
> >+.macro AVG_JMP_TABLE id, vlen
> >+const jmp_table_\id\vlen
> >+ .4byte \id\()2\vlen\()f - jmp_table_\id\vlen
> >+ .4byte \id\()4\vlen\()f - jmp_table_\id\vlen
> >+ .4byte \id\()8\vlen\()f - jmp_table_\id\vlen
> >+ .4byte \id\()16\vlen\()f - jmp_table_\id\vlen
> >+ .4byte \id\()32\vlen\()f - jmp_table_\id\vlen
> >+ .4byte \id\()64\vlen\()f - jmp_table_\id\vlen
> >+ .4byte \id\()128\vlen\()f - jmp_table_\id\vlen
> >+endconst
> >+.endm
> >+
> >+.macro AVG_J vlen, id
> >+ clz t1, a4
> >+ neg t1, t1
> >+ lla t5, jmp_table_\id\vlen
> >+ sh2add t1, t1, t5
> >+ lw t1, ((__riscv_xlen-2)<<2)(t1)
> >+ add t1, t1, t5
> >+ jr t1
> >+.endm
> >+
> >+.macro func_avg vlen
> >+func ff_vvc_avg_8_rvv_\vlen\(), zve32x
> >+ lpad 0
> >+ AVG_JMP_TABLE 1, \vlen
> >+ csrwi vxrm, 0
> >+ AVG_J \vlen, 1
> >+ .irp w,2,4,8,16,32,64,128
> >+ avg \w, \vlen, 1
> >+ .endr
> >+endfunc
> >+.endm
> >+
> >+func_avg 128
> >+func_avg 256
> >+
> >+#if (__riscv_xlen == 64)
> >+.macro w_avg w, vlen, id
> >+\id\w\vlen:
> >+.if \w <= 32 || (\w == 64 && \vlen == 256)
> >+ vsetvlstatic16 \w, \vlen
> >+ addi t0, a2, 128*2
> >+ addi t1, a3, 128*2
> >+ vle16.v v0, (a2)
> >+ vle16.v v4, (a3)
> >+ addi a5, a5, -2
> >+ vle16.v v8, (t0)
> >+ vle16.v v12, (t1)
> >+ vwmul.vx v16, v0, a7
> >+ vwmul.vx v24, v8, a7
> >+ vwmacc.vx v16, t3, v4
> >+ vwmacc.vx v24, t3, v12
> >+ vsetvlstatic32 \w, \vlen
> >+ add t2, a0, a1
> >+ vadd.vx v16, v16, t4
> >+ vadd.vx v24, v24, t4
> >+ vsetvlstatic16 \w, \vlen
> >+ vnsrl.wx v16, v16, t6
> >+ vnsrl.wx v24, v24, t6
> >+ vmax.vx v16, v16, zero
> >+ vmax.vx v24, v24, zero
> >+ vsetvlstatic8 \w, \vlen
> >+ addi a2, a2, 128*4
> >+ vnclipu.wi v16, v16, 0
> >+ vnclipu.wi v24, v24, 0
> >+ vse8.v v16, (a0)
> >+ addi a3, a3, 128*4
> >+ vse8.v v24, (t2)
> >+ sh1add a0, a1, a0
> >+.else
> >+ addi a5, a5, -1
> >+ mv t1, a0
> >+ mv t2, a2
> >+ mv t5, a3
> >+ mv a6, a4
> >+1:
> >+ vsetvli t0, a4, e16, m4, ta, ma
> >+ sub a4, a4, t0
> >+ vle16.v v0, (a2)
> >+ vle16.v v4, (a3)
> >+ vwmul.vx v16, v0, a7
> >+ vwmacc.vx v16, t3, v4
> >+ vsetvli zero, zero, e32, m8, ta, ma
> >+ vadd.vx v16, v16, t4
> >+ vsetvli zero, zero, e16, m4, ta, ma
> >+ vnsrl.wx v16, v16, t6
> >+ vmax.vx v16, v16, zero
> >+ vsetvli zero, zero, e8, m2, ta, ma
> >+ vnclipu.wi v16, v16, 0
> >+ vse8.v v16, (a0)
> >+ sh1add a2, t0, a2
> >+ sh1add a3, t0, a3
> >+ add a0, a0, t0
> >+ bnez a4, 1b
> >+ add a0, t1, a1
> >+ addi a2, t2, 128*2
> >+ addi a3, t5, 128*2
> >+ mv a4, a6
> >+.endif
> >+ bnez a5, \id\w\vlen\()b
> >+ ret
> >+.endm
> >+
> >+.macro func_w_avg vlen
> >+func ff_vvc_w_avg_8_rvv_\vlen\(), zve32x
> >+ lpad 0
> >+ AVG_JMP_TABLE 2, \vlen
> >+ csrwi vxrm, 0
> >+ addi t6, a6, 7
> >+ ld t3, (sp)
> >+ ld t4, 8(sp)
> >+ ld t5, 16(sp)
> >+ addi t4, t4, 1 // o0 + o1 + 1
> >+ add t4, t4, t5
> >+ addi t5, t6, -1 // shift - 1
> >+ sll t4, t4, t5
> >+ AVG_J \vlen, 2
> >+ .irp w,2,4,8,16,32,64,128
> >+ w_avg \w, \vlen, 2
> >+ .endr
> >+endfunc
> >+.endm
> >+
> >+func_w_avg 128
> >+func_w_avg 256
> >+#endif
> >diff --git a/libavcodec/riscv/vvc/vvcdsp_init.c
> b/libavcodec/riscv/vvc/vvcdsp_init.c
> >new file mode 100644
> >index 0000000000..9819a7c570
> >--- /dev/null
> >+++ b/libavcodec/riscv/vvc/vvcdsp_init.c
> >@@ -0,0 +1,72 @@
> >+/*
> >+ * Copyright (c) 2024 Institue of Software Chinese Academy of Sciences
> (ISCAS).
> >+ *
> >+ * This file is part of FFmpeg.
> >+ *
> >+ * FFmpeg is free software; you can redistribute it and/or
> >+ * modify it under the terms of the GNU Lesser General Public
> >+ * License as published by the Free Software Foundation; either
> >+ * version 2.1 of the License, or (at your option) any later version.
> >+ *
> >+ * FFmpeg is distributed in the hope that it will be useful,
> >+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
> >+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> >+ * Lesser General Public License for more details.
> >+ *
> >+ * You should have received a copy of the GNU Lesser General Public
> >+ * License along with FFmpeg; if not, write to the Free Software
> >+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> >+ */
> >+
> >+#include "config.h"
> >+
> >+#include "libavutil/attributes.h"
> >+#include "libavutil/cpu.h"
> >+#include "libavutil/riscv/cpu.h"
> >+#include "libavcodec/vvc/dsp.h"
> >+
> >+#define bf(fn, bd, opt) fn##_##bd##_##opt
> >+
> >+#define AVG_PROTOTYPES(bd, opt)
> \
> >+void bf(ff_vvc_avg, bd, opt)(uint8_t *dst, ptrdiff_t dst_stride,
> \
> >+ const int16_t *src0, const int16_t *src1, int width, int height);
> \
> >+void bf(ff_vvc_w_avg, bd, opt)(uint8_t *dst, ptrdiff_t dst_stride,
> \
> >+ const int16_t *src0, const int16_t *src1, int width, int height,
> \
> >+ int denom, int w0, int w1, int o0, int o1);
> >+
> >+AVG_PROTOTYPES(8, rvv_128)
> >+AVG_PROTOTYPES(8, rvv_256)
> >+
> >+void ff_vvc_dsp_init_riscv(VVCDSPContext *const c, const int bd)
> >+{
> >+#if HAVE_RVV
> >+ const int flags = av_get_cpu_flags();
> >+ int vlenb = ff_get_rv_vlenb();
> >+
> >+ if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)
> &&
> >+ vlenb >= 32) {
> >+ switch (bd) {
> >+ case 8:
> >+ c->inter.avg = ff_vvc_avg_8_rvv_256;
> >+# if (__riscv_xlen == 64)
> >+ c->inter.w_avg = ff_vvc_w_avg_8_rvv_256;
> >+# endif
> >+ break;
> >+ default:
> >+ break;
> >+ }
> >+ } else if ((flags & AV_CPU_FLAG_RVV_I32) && (flags &
> AV_CPU_FLAG_RVB_ADDR) &&
> >+ vlenb >= 16) {
> >+ switch (bd) {
> >+ case 8:
> >+ c->inter.avg = ff_vvc_avg_8_rvv_128;
> >+# if (__riscv_xlen == 64)
> >+ c->inter.w_avg = ff_vvc_w_avg_8_rvv_128;
> >+# endif
> >+ break;
> >+ default:
> >+ break;
> >+ }
> >+ }
> >+#endif
> >+}
> >diff --git a/libavcodec/vvc/dsp.c b/libavcodec/vvc/dsp.c
> >index 648d54ebb2..0d2e315395 100644
> >--- a/libavcodec/vvc/dsp.c
> >+++ b/libavcodec/vvc/dsp.c
> >@@ -123,6 +123,8 @@ void ff_vvc_dsp_init(VVCDSPContext *vvcdsp, int
> bit_depth)
> >
> > #if ARCH_AARCH64
> > ff_vvc_dsp_init_aarch64(vvcdsp, bit_depth);
> >+#elif ARCH_RISCV
> >+ ff_vvc_dsp_init_riscv(vvcdsp, bit_depth);
> > #elif ARCH_X86
> > ff_vvc_dsp_init_x86(vvcdsp, bit_depth);
> > #endif
> >diff --git a/libavcodec/vvc/dsp.h b/libavcodec/vvc/dsp.h
> >index 0b49b97021..4933cca891 100644
> >--- a/libavcodec/vvc/dsp.h
> >+++ b/libavcodec/vvc/dsp.h
> >@@ -181,6 +181,7 @@ typedef struct VVCDSPContext {
> > void ff_vvc_dsp_init(VVCDSPContext *hpc, int bit_depth);
> >
> > void ff_vvc_dsp_init_aarch64(VVCDSPContext *hpc, const int bit_depth);
> >+void ff_vvc_dsp_init_riscv(VVCDSPContext *hpc, const int bit_depth);
> > void ff_vvc_dsp_init_x86(VVCDSPContext *hpc, const int bit_depth);
> >
> > #endif /* AVCODEC_VVC_DSP_H */
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