From: sunyuechi <sunyue...@iscas.ac.cn>

                                                      C908   X60
avg_8_2x2_c                                        :    1.0    1.0
avg_8_2x2_rvv_i32                                  :    0.7    0.7
avg_8_2x4_c                                        :    2.0    2.0
avg_8_2x4_rvv_i32                                  :    1.0    0.7
avg_8_2x8_c                                        :    4.0    3.7
avg_8_2x8_rvv_i32                                  :    1.5    1.2
avg_8_2x16_c                                       :    7.5    7.7
avg_8_2x16_rvv_i32                                 :    2.7    2.5
avg_8_2x32_c                                       :   14.2   15.0
avg_8_2x32_rvv_i32                                 :    5.0    4.5
avg_8_2x64_c                                       :   28.5   30.2
avg_8_2x64_rvv_i32                                 :    9.5    8.7
avg_8_2x128_c                                      :   80.0   70.5
avg_8_2x128_rvv_i32                                :   50.7   41.2
avg_8_4x2_c                                        :    1.7    2.0
avg_8_4x2_rvv_i32                                  :    0.7    0.7
avg_8_4x4_c                                        :    3.5    3.7
avg_8_4x4_rvv_i32                                  :    1.2    1.0
avg_8_4x8_c                                        :    6.7    7.0
avg_8_4x8_rvv_i32                                  :    1.5    1.2
avg_8_4x16_c                                       :   13.2   14.0
avg_8_4x16_rvv_i32                                 :    2.7    2.5
avg_8_4x32_c                                       :   26.2   27.7
avg_8_4x32_rvv_i32                                 :    5.0    4.5
avg_8_4x64_c                                       :   52.2   55.0
avg_8_4x64_rvv_i32                                 :    9.5    8.7
avg_8_4x128_c                                      :  146.0  117.5
avg_8_4x128_rvv_i32                                :   53.2   40.5
avg_8_8x2_c                                        :    3.5    3.5
avg_8_8x2_rvv_i32                                  :    0.7    0.7
avg_8_8x4_c                                        :    6.5    6.5
avg_8_8x4_rvv_i32                                  :    1.2    1.0
avg_8_8x8_c                                        :   12.7   13.2
avg_8_8x8_rvv_i32                                  :    2.0    1.5
avg_8_8x16_c                                       :   25.2   26.2
avg_8_8x16_rvv_i32                                 :    3.5    2.5
avg_8_8x32_c                                       :   50.0   52.7
avg_8_8x32_rvv_i32                                 :    6.5    4.7
avg_8_8x64_c                                       :   99.7  105.0
avg_8_8x64_rvv_i32                                 :   12.5    8.5
avg_8_8x128_c                                      :  225.7  218.0
avg_8_8x128_rvv_i32                                :   78.0   39.2
avg_8_16x2_c                                       :    6.2    6.7
avg_8_16x2_rvv_i32                                 :    1.2    0.7
avg_8_16x4_c                                       :   12.2   12.7
avg_8_16x4_rvv_i32                                 :    2.0    1.2
avg_8_16x8_c                                       :   24.7   26.0
avg_8_16x8_rvv_i32                                 :    3.5    1.7
avg_8_16x16_c                                      :   49.0   51.5
avg_8_16x16_rvv_i32                                :    6.2    3.2
avg_8_16x32_c                                      :   97.5  102.5
avg_8_16x32_rvv_i32                                :   11.5    5.7
avg_8_16x64_c                                      :  212.5  204.7
avg_8_16x64_rvv_i32                                :   22.5   11.0
avg_8_16x128_c                                     :  411.2  418.2
avg_8_16x128_rvv_i32                               :   76.0   47.7
avg_8_32x2_c                                       :   12.2   12.7
avg_8_32x2_rvv_i32                                 :    2.0    1.2
avg_8_32x4_c                                       :   24.2   25.5
avg_8_32x4_rvv_i32                                 :    3.2    1.7
avg_8_32x8_c                                       :   48.5   50.7
avg_8_32x8_rvv_i32                                 :    5.7    3.2
avg_8_32x16_c                                      :   96.5  101.2
avg_8_32x16_rvv_i32                                :   10.7    5.7
avg_8_32x32_c                                      :  192.5  202.5
avg_8_32x32_rvv_i32                                :   20.7   10.5
avg_8_32x64_c                                      :  411.2  404.5
avg_8_32x64_rvv_i32                                :   41.0   20.5
avg_8_32x128_c                                     :  834.7  855.2
avg_8_32x128_rvv_i32                               :  151.2  118.7
avg_8_64x2_c                                       :   24.0   25.2
avg_8_64x2_rvv_i32                                 :    3.2    1.7
avg_8_64x4_c                                       :   48.2   50.5
avg_8_64x4_rvv_i32                                 :    5.2    3.0
avg_8_64x8_c                                       :   95.7  100.7
avg_8_64x8_rvv_i32                                 :   10.0    5.2
avg_8_64x16_c                                      :  191.7  201.2
avg_8_64x16_rvv_i32                                :   19.2    9.5
avg_8_64x32_c                                      :  406.2  402.0
avg_8_64x32_rvv_i32                                :   38.0   18.5
avg_8_64x64_c                                      :  827.5  833.7
avg_8_64x64_rvv_i32                                :  148.2   95.2
avg_8_64x128_c                                     : 1607.7 1625.7
avg_8_64x128_rvv_i32                               :  252.0  179.5
avg_8_128x2_c                                      :   48.7   51.0
avg_8_128x2_rvv_i32                                :    5.5    2.7
avg_8_128x4_c                                      :   96.7  101.2
avg_8_128x4_rvv_i32                                :    9.7    5.0
avg_8_128x8_c                                      :  192.5  202.0
avg_8_128x8_rvv_i32                                :   19.0    9.0
avg_8_128x16_c                                     :  403.5  403.2
avg_8_128x16_rvv_i32                               :   37.0   17.5
avg_8_128x32_c                                     :  787.0  805.7
avg_8_128x32_rvv_i32                               :   73.5   34.2
avg_8_128x64_c                                     : 1635.7 1654.7
avg_8_128x64_rvv_i32                               :  229.5   68.5
avg_8_128x128_c                                    : 3217.0 3233.5
avg_8_128x128_rvv_i32                              :  435.0  321.2
w_avg_8_2x2_c                                      :    1.5    1.5
w_avg_8_2x2_rvv_i32                                :    1.2    1.2
w_avg_8_2x4_c                                      :    2.7    2.5
w_avg_8_2x4_rvv_i32                                :    1.7    1.7
w_avg_8_2x8_c                                      :    5.0    4.7
w_avg_8_2x8_rvv_i32                                :    2.7    2.5
w_avg_8_2x16_c                                     :    9.7    9.5
w_avg_8_2x16_rvv_i32                               :    4.7    4.5
w_avg_8_2x32_c                                     :   19.0   18.5
w_avg_8_2x32_rvv_i32                               :    9.0    8.0
w_avg_8_2x64_c                                     :   37.2   37.0
w_avg_8_2x64_rvv_i32                               :   17.5   15.5
w_avg_8_2x128_c                                    :  120.7   82.7
w_avg_8_2x128_rvv_i32                              :   71.2   49.0
w_avg_8_4x2_c                                      :    2.5    2.5
w_avg_8_4x2_rvv_i32                                :    1.2    1.2
w_avg_8_4x4_c                                      :    4.7    4.5
w_avg_8_4x4_rvv_i32                                :    1.7    1.5
w_avg_8_4x8_c                                      :    9.0    9.0
w_avg_8_4x8_rvv_i32                                :    2.7    2.5
w_avg_8_4x16_c                                     :   17.7   17.7
w_avg_8_4x16_rvv_i32                               :    5.0    4.2
w_avg_8_4x32_c                                     :   34.7   34.7
w_avg_8_4x32_rvv_i32                               :    9.0    8.0
w_avg_8_4x64_c                                     :   69.7   69.5
w_avg_8_4x64_rvv_i32                               :   17.2   15.5
w_avg_8_4x128_c                                    :  171.7  154.7
w_avg_8_4x128_rvv_i32                              :   87.0   48.0
w_avg_8_8x2_c                                      :    4.5    4.5
w_avg_8_8x2_rvv_i32                                :    1.5    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                                      :   17.2   17.0
w_avg_8_8x8_rvv_i32                                :    3.5    2.5
w_avg_8_8x16_c                                     :   34.0   34.0
w_avg_8_8x16_rvv_i32                               :    6.0    4.5
w_avg_8_8x32_c                                     :   67.5   68.0
w_avg_8_8x32_rvv_i32                               :   10.7    8.2
w_avg_8_8x64_c                                     :  135.7  135.0
w_avg_8_8x64_rvv_i32                               :   21.0   15.7
w_avg_8_8x128_c                                    :  304.0  280.0
w_avg_8_8x128_rvv_i32                              :   65.5   56.7
w_avg_8_16x2_c                                     :    8.5    8.7
w_avg_8_16x2_rvv_i32                               :    2.0    1.2
w_avg_8_16x4_c                                     :   16.7   17.0
w_avg_8_16x4_rvv_i32                               :    3.2    2.0
w_avg_8_16x8_c                                     :   33.5   33.5
w_avg_8_16x8_rvv_i32                               :    5.7    3.0
w_avg_8_16x16_c                                    :   66.7   62.2
w_avg_8_16x16_rvv_i32                              :   27.0    5.2
w_avg_8_16x32_c                                    :  132.5  133.0
w_avg_8_16x32_rvv_i32                              :   20.2    9.7
w_avg_8_16x64_c                                    :  264.2  239.0
w_avg_8_16x64_rvv_i32                              :   39.7   18.7
w_avg_8_16x128_c                                   :  572.5  541.2
w_avg_8_16x128_rvv_i32                             :  148.5   55.2
w_avg_8_32x2_c                                     :   16.7   16.7
w_avg_8_32x2_rvv_i32                               :    3.2    2.0
w_avg_8_32x4_c                                     :   33.2   33.2
w_avg_8_32x4_rvv_i32                               :    6.0    3.0
w_avg_8_32x8_c                                     :   66.0   66.0
w_avg_8_32x8_rvv_i32                               :   11.0    5.5
w_avg_8_32x16_c                                    :  131.2  122.7
w_avg_8_32x16_rvv_i32                              :   21.5    9.7
w_avg_8_32x32_c                                    :  262.2  268.7
w_avg_8_32x32_rvv_i32                              :   42.2   18.5
w_avg_8_32x64_c                                    :  544.2  547.0
w_avg_8_32x64_rvv_i32                              :   83.5   37.0
w_avg_8_32x128_c                                   : 1426.7 1139.7
w_avg_8_32x128_rvv_i32                             :  201.0  138.2
w_avg_8_64x2_c                                     :   33.0   33.0
w_avg_8_64x2_rvv_i32                               :    6.0    3.0
w_avg_8_64x4_c                                     :   65.7   65.7
w_avg_8_64x4_rvv_i32                               :   11.2    5.5
w_avg_8_64x8_c                                     :  131.0  131.5
w_avg_8_64x8_rvv_i32                               :   21.5   10.0
w_avg_8_64x16_c                                    :  289.2  262.7
w_avg_8_64x16_rvv_i32                              :   42.5   19.2
w_avg_8_64x32_c                                    :  548.7  525.2
w_avg_8_64x32_rvv_i32                              :   83.7   37.5
w_avg_8_64x64_c                                    : 1139.5 1208.2
w_avg_8_64x64_rvv_i32                              :  209.0  107.5
w_avg_8_64x128_c                                   : 2495.5 2300.5
w_avg_8_64x128_rvv_i32                             :  420.2  208.7
w_avg_8_128x2_c                                    :   66.0   66.5
w_avg_8_128x2_rvv_i32                              :   11.2    5.5
w_avg_8_128x4_c                                    :  131.2  132.5
w_avg_8_128x4_rvv_i32                              :   21.5   10.0
w_avg_8_128x8_c                                    :  280.2  275.7
w_avg_8_128x8_rvv_i32                              :   42.2   19.5
w_avg_8_128x16_c                                   :  549.0  527.7
w_avg_8_128x16_rvv_i32                             :  104.7   37.7
w_avg_8_128x32_c                                   : 1215.2 1068.5
w_avg_8_128x32_rvv_i32                             :  189.0   74.7
w_avg_8_128x64_c                                   : 2305.5 2145.5
w_avg_8_128x64_rvv_i32                             :  386.7  190.0
w_avg_8_128x128_c                                  : 5797.0 4600.2
w_avg_8_128x128_rvv_i32                            :  760.5  343.0
---
 libavcodec/riscv/Makefile      |   2 +
 libavcodec/riscv/vvc_mc_rvv.S  | 313 +++++++++++++++++++++++++++++++++
 libavcodec/riscv/vvcdsp_init.c |  71 ++++++++
 libavcodec/vvc/dsp.c           |   4 +-
 libavcodec/vvc/dsp.h           |   1 +
 5 files changed, 390 insertions(+), 1 deletion(-)
 create mode 100644 libavcodec/riscv/vvc_mc_rvv.S
 create mode 100644 libavcodec/riscv/vvcdsp_init.c

diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index 27b268ae39..6297664fc9 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -68,3 +68,5 @@ RV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvi.o \
 RVV-OBJS-$(CONFIG_VP9_DECODER) += riscv/vp9_intra_rvv.o
 OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_init.o
 RVV-OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_rvv.o
+OBJS-$(CONFIG_VVC_DECODER) += riscv/vvcdsp_init.o
+RVV-OBJS-$(CONFIG_VVC_DECODER) += riscv/vvc_mc_rvv.o
diff --git a/libavcodec/riscv/vvc_mc_rvv.S b/libavcodec/riscv/vvc_mc_rvv.S
new file mode 100644
index 0000000000..3c2bac37f7
--- /dev/null
+++ b/libavcodec/riscv/vvc_mc_rvv.S
@@ -0,0 +1,313 @@
+/*
+ * 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 is_w
+        .if \w <= 2
+                vsetivli        zero, \w, e8, mf8, ta, ma
+        .elseif \w <= 4 && \vlen == 128
+                vsetivli        zero, \w, e8, mf4, ta, ma
+        .elseif \w <= 4 && \vlen >= 256
+                vsetivli        zero, \w, e8, mf8, ta, ma
+        .elseif \w <= 8 && \vlen == 128
+                vsetivli        zero, \w, e8, mf2, ta, ma
+        .elseif \w <= 8 && \vlen >= 256
+                vsetivli        zero, \w, e8, mf4, ta, ma
+        .elseif \w <= 16 && \vlen == 128
+                vsetivli        zero, \w, e8, m1, 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 <= (\vlen / 4) || \is_w
+                li t0, 64
+                vsetvli         zero, t0, e8, m2, ta, ma
+        .else
+                li t0, \w
+                vsetvli         zero, t0, e8, m4, ta, ma
+        .endif
+.endm
+
+.macro vsetvlstatic16 w vlen is_w
+        .if \w <= 2
+                vsetivli        zero, \w, e16, mf4, ta, ma
+        .elseif \w <= 4 && \vlen == 128
+                vsetivli        zero, \w, e16, mf2, ta, ma
+        .elseif \w <= 4 && \vlen >= 256
+                vsetivli        zero, \w, e16, mf4, ta, ma
+        .elseif \w <= 8 && \vlen == 128
+                vsetivli        zero, \w, e16, m1, ta, ma
+        .elseif \w <= 8 && \vlen >= 256
+                vsetivli        zero, \w, e16, mf2, ta, ma
+        .elseif \w <= 16 && \vlen == 128
+                vsetivli        zero, \w, e16, m2, 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 <= (\vlen / 4) || \is_w
+                li t0, 64
+                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 <= 4 && \vlen >= 256
+                vsetivli        zero, \w, e32, mf2, ta, ma
+        .elseif \w <= 8 && \vlen == 128
+                vsetivli        zero, \w, e32, m2, ta, ma
+        .elseif \w <= 8 && \vlen >= 256
+                vsetivli        zero, \w, e32, m1, ta, ma
+        .elseif \w <= 16 && \vlen == 128
+                vsetivli        zero, \w, e32, m4, 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_nx1 w vlen
+        vsetvlstatic16    \w, \vlen, 0
+        vle16.v           v0, (a2)
+        vle16.v           v8, (a3)
+        vadd.vv           v8, v8, v0
+        vmax.vx           v8, v8, zero
+        vsetvlstatic8     \w, \vlen, 0
+        vnclipu.wi        v8, v8, 7
+        vse8.v            v8, (a0)
+.endm
+
+.macro avg w h vlen
+        csrw              vxrm, zero
+
+.if \w <= (\vlen / 4) && \h >= 4
+.rept (\h / 4)
+        addi              t1, a3, 128*2
+        addi              t3, a2, 128*2*2
+        add               t2, a0, a1
+        sh1add            t5, a1, a0
+        addi              t4, a3, 128*2*2
+        addi              a7, a3, 128*2*3
+        addi              t6, a2, 128*2*3
+        vsetvlstatic16    \w, \vlen, 0
+        addi              t0, a2, 128*2
+        add               a6, t5, a1
+        vle16.v           v0, (a2)
+        vle16.v           v4, (a3)
+        vle16.v           v8, (t0)
+        vle16.v           v12, (t1)
+        vle16.v           v16, (t3)
+        vle16.v           v20, (t4)
+        vle16.v           v24, (t6)
+        vle16.v           v28, (a7)
+        vadd.vv           v4, v4, v0
+        vadd.vv           v12, v12, v8
+        vadd.vv           v20, v20, v16
+        vadd.vv           v28, v28, v24
+        vmax.vx           v4, v4, zero
+        vmax.vx           v12, v12, zero
+        vmax.vx           v20, v20, zero
+        vmax.vx           v28, v28, zero
+        vsetvlstatic8     \w, \vlen, 0
+        addi              a2, a2, 128*8
+        vnclipu.wi        v4, v4, 7
+        vnclipu.wi        v12, v12, 7
+        vnclipu.wi        v20, v20, 7
+        vnclipu.wi        v28, v28, 7
+        addi              a3, a3, 128*8
+        vse8.v            v4, (a0)
+        vse8.v            v12, (t2)
+        vse8.v            v20, (t5)
+        sh2add            a0, a1, a0
+        vse8.v            v28, (a6)
+.endr
+
+.elseif (\w <= (\vlen / 4) && \h == 2) || (\w == (\vlen / 2))
+.rept (\h / 2)
+        vsetvlstatic16 \w, \vlen, 0
+        addi              t0, a2, 128*2
+        addi              t1, a3, 128*2
+        add               t2, a0, a1
+        vle16.v           v0, (a2)
+        vle16.v           v8, (a3)
+        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
+        vsetvlstatic8     \w, \vlen, 0
+        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
+.endr
+
+.else
+.rept \h
+        avg_nx1           \w, \vlen
+        .if \w == 128 && \vlen == 128
+        addi              a2, a2, 64*2
+        addi              a3, a3, 64*2
+        addi              a0, a0, 64
+        avg_nx1           \w, \vlen
+        addi              a0, a0, -64
+        addi              a2, a2, 128
+        addi              a3, a3, 128
+        .else
+        addi              a2, a2, 128*2
+        addi              a3, a3, 128*2
+        .endif
+        add               a0, a0, a1
+.endr
+.endif
+.endm
+
+.macro w_avg_nx1 w vlen
+        vsetvlstatic16    \w, \vlen, 1
+        vle16.v           v0, (a2)
+        vle16.v           v8, (a3)
+        vwmul.vx          v16, v0, a7
+        vwmacc.vx         v16, t3, v8
+        vsetvlstatic32    \w, \vlen
+        vadd.vx           v16, v16, t4
+        vsetvlstatic16    \w, \vlen, 1
+        vnsrl.wx          v16, v16, t6
+        vmax.vx           v16, v16, zero
+        vsetvlstatic8     \w, \vlen, 1
+        vnclipu.wi        v16, v16, 0
+        vse8.v            v16, (a0)
+.endm
+
+#if (__riscv_xlen == 64)
+.macro w_avg w h vlen
+        csrw              vxrm, zero
+        addi              t6, a6, 7
+        ld                t3, (sp)
+        ld                t4, 8(sp)
+        ld                t5, 16(sp)
+        add               t4, t4, t5
+        addi              t4, t4, 1       // o0 + o1 + 1
+        addi              t5, t6, -1      // shift - 1
+        sll               t4, t4, t5
+
+.if \w <= (\vlen / 8)
+        .rept (\h / 2)
+        vsetvlstatic16    \w, \vlen, 1
+        addi              t0, a2, 128*2
+        addi              t1, a3, 128*2
+        vle16.v           v0, (a2)
+        vle16.v           v8, (a3)
+        vle16.v           v20, (t0)
+        vle16.v           v24, (t1)
+        vwmul.vx          v16, v0, a7
+        vwmul.vx          v28, v20, a7
+        vwmacc.vx         v16, t3, v8
+        vwmacc.vx         v28, t3, v24
+        vsetvlstatic32    \w, \vlen
+        add               t2, a0, a1
+        vadd.vx           v16, v16, t4
+        vadd.vx           v28, v28, t4
+        vsetvlstatic16    \w, \vlen, 1
+        vnsrl.wx          v16, v16, t6
+        vnsrl.wx          v28, v28, t6
+        vmax.vx           v16, v16, zero
+        vmax.vx           v28, v28, zero
+        vsetvlstatic8     \w, \vlen, 1
+        addi              a2, a2, 128*4
+        vnclipu.wi        v16, v16, 0
+        vnclipu.wi        v28, v28, 0
+        vse8.v            v16, (a0)
+        addi              a3, a3, 128*4
+        vse8.v            v28, (t2)
+        sh1add            a0, a1, a0
+        .endr
+.else
+        .rept \h
+        w_avg_nx1         \w, \vlen
+        .if \w == (\vlen / 2)
+        addi              a2, a2, (\vlen / 2)
+        addi              a3, a3, (\vlen / 2)
+        addi              a0, a0, (\vlen / 4)
+        w_avg_nx1         \w, \vlen
+        addi              a2, a2, -(\vlen / 2)
+        addi              a3, a3, -(\vlen / 2)
+        addi              a0, a0, -(\vlen / 4)
+        .elseif \w == 128 && \vlen == 128
+        .rept 3
+        addi              a2, a2, (\vlen / 2)
+        addi              a3, a3, (\vlen / 2)
+        addi              a0, a0, (\vlen / 4)
+        w_avg_nx1         \w, \vlen
+        .endr
+        addi              a2, a2, -(\vlen / 2) * 3
+        addi              a3, a3, -(\vlen / 2) * 3
+        addi              a0, a0, -(\vlen / 4) * 3
+        .endif
+
+        addi              a2, a2, 128*2
+        addi              a3, a3, 128*2
+        add               a0, a0, a1
+        .endr
+.endif
+.endm
+#endif
+
+.macro func_avg name vlen
+func ff_vvc_\name\()_8_rvv_\vlen\(), zve32x
+.irp w,2,4,8,16,32,64,128
+        li                t3, \w
+        bne               a4, t3, \name\vlen\()end\w
+.irp h,2,4,8,16,32,64,128
+        li                t4, \h
+        bne               a5, t4, \name\vlen\()end\w\h
+        \name             \w \h \vlen
+        ret
+\name\vlen\()end\w\h:
+.endr
+\name\vlen\()end\w:
+.endr
+endfunc
+.endm
+
+func_avg avg 256
+func_avg avg 128
+#if (__riscv_xlen == 64)
+func_avg w_avg 256
+func_avg w_avg 128
+#endif
diff --git a/libavcodec/riscv/vvcdsp_init.c b/libavcodec/riscv/vvcdsp_init.c
new file mode 100644
index 0000000000..85b1ede061
--- /dev/null
+++ b/libavcodec/riscv/vvcdsp_init.c
@@ -0,0 +1,71 @@
+/*
+ * 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();
+
+    if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR) &&
+        ff_rv_vlen_least(256)) {
+        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) 
&&
+               ff_rv_vlen_least(128)) {
+        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 41e830a98a..c55a37d255 100644
--- a/libavcodec/vvc/dsp.c
+++ b/libavcodec/vvc/dsp.c
@@ -121,7 +121,9 @@ void ff_vvc_dsp_init(VVCDSPContext *vvcdsp, int bit_depth)
         break;
     }
 
-#if ARCH_X86
+#if 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 9810ac314c..dcb978549f 100644
--- a/libavcodec/vvc/dsp.h
+++ b/libavcodec/vvc/dsp.h
@@ -167,6 +167,7 @@ typedef struct VVCDSPContext {
 
 void ff_vvc_dsp_init(VVCDSPContext *hpc, 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 */
-- 
2.45.1

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