Optimize the put and avg filtering for 8x8 chroma blocks
Signed-off-by: Arnie Chang <arnie.ch...@sifive.com>
---
libavcodec/h264chroma.c | 2 +
libavcodec/h264chroma.h | 1 +
libavcodec/riscv/Makefile | 3 +
libavcodec/riscv/h264_chroma_init_riscv.c | 39 ++
libavcodec/riscv/h264_mc_chroma.S | 492 ++++++++++++++++++++++
libavcodec/riscv/h264_mc_chroma.h | 34 ++
6 files changed, 571 insertions(+)
create mode 100644 libavcodec/riscv/h264_chroma_init_riscv.c
create mode 100644 libavcodec/riscv/h264_mc_chroma.S
create mode 100644 libavcodec/riscv/h264_mc_chroma.h
diff --git a/libavcodec/h264chroma.c b/libavcodec/h264chroma.c
index 60b86b6fba..1eeab7bc40 100644
--- a/libavcodec/h264chroma.c
+++ b/libavcodec/h264chroma.c
@@ -58,5 +58,7 @@ av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
ff_h264chroma_init_mips(c, bit_depth);
#elif ARCH_LOONGARCH64
ff_h264chroma_init_loongarch(c, bit_depth);
+#elif ARCH_RISCV
+ ff_h264chroma_init_riscv(c, bit_depth);
#endif
}
diff --git a/libavcodec/h264chroma.h b/libavcodec/h264chroma.h
index b8f9c8f4fc..9c81c18a76 100644
--- a/libavcodec/h264chroma.h
+++ b/libavcodec/h264chroma.h
@@ -37,5 +37,6 @@ void ff_h264chroma_init_ppc(H264ChromaContext *c, int bit_depth);
void ff_h264chroma_init_x86(H264ChromaContext *c, int bit_depth);
void ff_h264chroma_init_mips(H264ChromaContext *c, int bit_depth);
void ff_h264chroma_init_loongarch(H264ChromaContext *c, int bit_depth);
+void ff_h264chroma_init_riscv(H264ChromaContext *c, int bit_depth);
#endif /* AVCODEC_H264CHROMA_H */
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile
index 965942f4df..08b76c93cb 100644
--- a/libavcodec/riscv/Makefile
+++ b/libavcodec/riscv/Makefile
@@ -19,3 +19,6 @@ OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \
RVV-OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_rvv.o
OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_init.o
RVV-OBJS-$(CONFIG_VORBIS_DECODER) += riscv/vorbisdsp_rvv.o
+
+OBJS-$(CONFIG_H264CHROMA) += riscv/h264_chroma_init_riscv.o
+RVV-OBJS-$(CONFIG_H264CHROMA) += riscv/h264_mc_chroma.o
diff --git a/libavcodec/riscv/h264_chroma_init_riscv.c b/libavcodec/riscv/h264_chroma_init_riscv.c
new file mode 100644
index 0000000000..b6f98ba693
--- /dev/null
+++ b/libavcodec/riscv/h264_chroma_init_riscv.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2023 SiFive, Inc. All rights reserved.
+ *
+ * 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 <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavcodec/h264chroma.h"
+#include "config.h"
+#include "h264_mc_chroma.h"
+
+av_cold void ff_h264chroma_init_riscv(H264ChromaContext *c, int bit_depth)
+{
+#if HAVE_RVV
+ const int high_bit_depth = bit_depth > 8;
+
+ if (!high_bit_depth) {
+ c->put_h264_chroma_pixels_tab[0] = h264_put_chroma_mc8_rvv;
+ c->avg_h264_chroma_pixels_tab[0] = h264_avg_chroma_mc8_rvv;
+ }
+#endif
+}
\ No newline at end of file
diff --git a/libavcodec/riscv/h264_mc_chroma.S b/libavcodec/riscv/h264_mc_chroma.S
new file mode 100644
index 0000000000..a02866f633
--- /dev/null
+++ b/libavcodec/riscv/h264_mc_chroma.S
@@ -0,0 +1,492 @@
+/*
+ * Copyright (c) 2023 SiFive, Inc. All rights reserved.
+ *
+ * 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
+ */
+ .text
+
+ .globl h264_put_chroma_mc8_rvv
+ .p2align 1
+ .type h264_put_chroma_mc8_rvv,@function
+h264_put_chroma_mc8_rvv:
+ slliw t2, a5, 3
+ mulw t1, a5, a4
+ sh3add a5, a4, t2
+ slliw a4, a4, 3
+ subw a5, t1, a5
+ subw a7, a4, t1
+ addiw a6, a5, 64
+ subw t0, t2, t1
+ vsetivli t3, 8, e8, m1, ta, mu
+ beqz t1, .LBB0_4
+ blez a3, .LBB0_17
+ li t4, 0
+ li t2, 0
+ addi a5, t3, 1
+ slli t3, a2, 2
+.LBB0_3: # if (xy != 0)
+ add a4, a1, t4
+ vsetvli zero, a5, e8, m1, ta, ma
+ addiw t2, t2, 4
+ vle8.v v10, (a4)
+ add a4, a4, a2
+ vslidedown.vi v11, v10, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v8, v10, a6
+ vwmaccu.vx v8, a7, v11
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v12, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a4, a2
+ vwmaccu.vx v8, t0, v12
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v13, v12, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v10, v12, a6
+ vwmaccu.vx v8, t1, v13
+ vwmaccu.vx v10, a7, v13
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v14, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a4, a2
+ vwmaccu.vx v10, t0, v14
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v15, v14, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v12, v14, a6
+ vwmaccu.vx v10, t1, v15
+ vwmaccu.vx v12, a7, v15
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v14, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a4, a2
+ vwmaccu.vx v12, t0, v14
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v15, v14, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v16, v14, a6
+ vwmaccu.vx v12, t1, v15
+ vwmaccu.vx v16, a7, v15
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v14, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a0, t4
+ add t4, t4, t3
+ vwmaccu.vx v16, t0, v14
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v14, v14, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vnclipu.wi v15, v8, 6
+ vwmaccu.vx v16, t1, v14
+ vse8.v v15, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v10, 6
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v12, 6
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v16, 6
+ vse8.v v8, (a4)
+ blt t2, a3, .LBB0_3
+ j .LBB0_17
+.LBB0_4:
+ bnez a4, .LBB0_9
+ beqz t2, .LBB0_9
+ blez a3, .LBB0_17
+ li a4, 0
+ li t1, 0
+ slli a7, a2, 2
+.LBB0_8: # if ((x8 - xy) == 0 && (y8 -xy) != 0)
+ add a5, a1, a4
+ vsetvli zero, zero, e8, m1, ta, ma
+ addiw t1, t1, 4
+ vle8.v v8, (a5)
+ add a5, a5, a2
+ add t2, a5, a2
+ vwmulu.vx v10, v8, a6
+ vle8.v v8, (a5)
+ vwmulu.vx v12, v8, a6
+ vle8.v v9, (t2)
+ add t2, t2, a2
+ add a5, t2, a2
+ vwmaccu.vx v10, t0, v8
+ vle8.v v8, (t2)
+ vle8.v v14, (a5)
+ add a5, a0, a4
+ add a4, a4, a7
+ vwmaccu.vx v12, t0, v9
+ vnclipu.wi v15, v10, 6
+ vwmulu.vx v10, v9, a6
+ vse8.v v15, (a5)
+ add a5, a5, a2
+ vnclipu.wi v9, v12, 6
+ vwmaccu.vx v10, t0, v8
+ vwmulu.vx v12, v8, a6
+ vse8.v v9, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v10, 6
+ vwmaccu.vx v12, t0, v14
+ vse8.v v8, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v12, 6
+ vse8.v v8, (a5)
+ blt t1, a3, .LBB0_8
+ j .LBB0_17
+.LBB0_9:
+ beqz a4, .LBB0_14
+ bnez t2, .LBB0_14
+ blez a3, .LBB0_17
+ li a4, 0
+ li t2, 0
+ addi t0, t3, 1
+ slli t1, a2, 2
+.LBB0_13: # if ((x8 - xy) != 0 && (y8 -xy) == 0)
+ add a5, a1, a4
+ vsetvli zero, t0, e8, m1, ta, ma
+ addiw t2, t2, 4
+ vle8.v v8, (a5)
+ add a5, a5, a2
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v10, v8, a6
+ vwmaccu.vx v10, a7, v9
+ vsetvli zero, t0, e8, m1, ta, ma
+ vle8.v v8, (a5)
+ add a5, a5, a2
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v12, v8, a6
+ vwmaccu.vx v12, a7, v9
+ vsetvli zero, t0, e8, m1, ta, ma
+ vle8.v v8, (a5)
+ add a5, a5, a2
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v14, v8, a6
+ vwmaccu.vx v14, a7, v9
+ vsetvli zero, t0, e8, m1, ta, ma
+ vle8.v v8, (a5)
+ add a5, a0, a4
+ add a4, a4, t1
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vnclipu.wi v16, v10, 6
+ vse8.v v16, (a5)
+ add a5, a5, a2
+ vnclipu.wi v10, v12, 6
+ vwmulu.vx v12, v8, a6
+ vse8.v v10, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v14, 6
+ vwmaccu.vx v12, a7, v9
+ vse8.v v8, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v12, 6
+ vse8.v v8, (a5)
+ blt t2, a3, .LBB0_13
+ j .LBB0_17
+.LBB0_14:
+ blez a3, .LBB0_17
+ li a4, 0
+ li t2, 0
+ slli a7, a2, 2
+.LBB0_16: # the final else, none of the above conditions are met
+ add t0, a1, a4
+ vsetvli zero, zero, e8, m1, ta, ma
+ add a5, a0, a4
+ add a4, a4, a7
+ addiw t2, t2, 4
+ vle8.v v8, (t0)
+ add t0, t0, a2
+ add t1, t0, a2
+ vwmulu.vx v10, v8, a6
+ vle8.v v8, (t0)
+ add t0, t1, a2
+ vle8.v v9, (t1)
+ vle8.v v12, (t0)
+ vnclipu.wi v13, v10, 6
+ vwmulu.vx v10, v8, a6
+ vse8.v v13, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v10, 6
+ vwmulu.vx v10, v9, a6
+ vse8.v v8, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v10, 6
+ vwmulu.vx v10, v12, a6
+ vse8.v v8, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v10, 6
+ vse8.v v8, (a5)
+ blt t2, a3, .LBB0_16
+.LBB0_17: # Exit h264_put_chroma_mc8_rvv
+ ret
+.Lfunc_end0:
+ .size h264_put_chroma_mc8_rvv, .Lfunc_end0-h264_put_chroma_mc8_rvv
+
+ .globl h264_avg_chroma_mc8_rvv
+ .p2align 1
+ .type h264_avg_chroma_mc8_rvv,@function
+h264_avg_chroma_mc8_rvv:
+ slliw t2, a5, 3
+ mulw t1, a5, a4
+ sh3add a5, a4, t2
+ slliw a4, a4, 3
+ subw a5, t1, a5
+ subw a7, a4, t1
+ addiw a6, a5, 64
+ subw t0, t2, t1
+ vsetivli t3, 8, e8, m1, ta, mu
+ beqz t1, .LBB1_4
+ blez a3, .LBB1_17
+ li t4, 0
+ li t2, 0
+ addi a5, t3, 1
+ slli t3, a2, 2
+.LBB1_3: # if (xy != 0)
+ add a4, a1, t4
+ vsetvli zero, a5, e8, m1, ta, ma
+ addiw t2, t2, 4
+ vle8.v v10, (a4)
+ add a4, a4, a2
+ vslidedown.vi v11, v10, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v8, v10, a6
+ vwmaccu.vx v8, a7, v11
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v12, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a4, a2
+ vwmaccu.vx v8, t0, v12
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v13, v12, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v10, v12, a6
+ vwmaccu.vx v8, t1, v13
+ vwmaccu.vx v10, a7, v13
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v14, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a4, a2
+ vwmaccu.vx v10, t0, v14
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v15, v14, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v12, v14, a6
+ vwmaccu.vx v10, t1, v15
+ vwmaccu.vx v12, a7, v15
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v14, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a4, a2
+ vwmaccu.vx v12, t0, v14
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v15, v14, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v16, v14, a6
+ vwmaccu.vx v12, t1, v15
+ vwmaccu.vx v16, a7, v15
+ vsetvli zero, a5, e8, m1, ta, ma
+ vle8.v v14, (a4)
+ vsetivli zero, 8, e8, m1, ta, ma
+ add a4, a0, t4
+ add t4, t4, t3
+ vwmaccu.vx v16, t0, v14
+ vsetvli zero, a5, e8, m1, ta, ma
+ vslidedown.vi v14, v14, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vnclipu.wi v15, v8, 6
+ vle8.v v8, (a4)
+ vwmaccu.vx v16, t1, v14
+ vaaddu.vv v8, v15, v8
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v10, 6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v12, 6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v16, 6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a4)
+ blt t2, a3, .LBB1_3
+ j .LBB1_17
+.LBB1_4:
+ bnez a4, .LBB1_9
+ beqz t2, .LBB1_9
+ blez a3, .LBB1_17
+ li t2, 0
+ li t1, 0
+ slli a7, a2, 2
+.LBB1_8: # if ((x8 - xy) == 0 && (y8 -xy) != 0)
+ add a4, a1, t2
+ vsetvli zero, zero, e8, m1, ta, ma
+ addiw t1, t1, 4
+ vle8.v v8, (a4)
+ add a4, a4, a2
+ vwmulu.vx v10, v8, a6
+ vle8.v v8, (a4)
+ add a4, a4, a2
+ add a5, a4, a2
+ vle8.v v9, (a4)
+ add a4, a5, a2
+ vle8.v v12, (a5)
+ vwmaccu.vx v10, t0, v8
+ vle8.v v13, (a4)
+ add a4, a0, t2
+ add t2, t2, a7
+ vnclipu.wi v14, v10, 6
+ vwmulu.vx v10, v8, a6
+ vle8.v v8, (a4)
+ vaaddu.vv v8, v14, v8
+ vwmaccu.vx v10, t0, v9
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v10, 6
+ vwmulu.vx v10, v9, a6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vwmaccu.vx v10, t0, v12
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v10, 6
+ vwmulu.vx v10, v12, a6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vwmaccu.vx v10, t0, v13
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v10, 6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a4)
+ blt t1, a3, .LBB1_8
+ j .LBB1_17
+.LBB1_9:
+ beqz a4, .LBB1_14
+ bnez t2, .LBB1_14
+ blez a3, .LBB1_17
+ li a5, 0
+ li t2, 0
+ addi t0, t3, 1
+ slli t1, a2, 2
+.LBB1_13: # if ((x8 - xy) != 0 && (y8 -xy) == 0)
+ add a4, a1, a5
+ vsetvli zero, t0, e8, m1, ta, ma
+ addiw t2, t2, 4
+ vle8.v v8, (a4)
+ add a4, a4, a2
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v10, v8, a6
+ vwmaccu.vx v10, a7, v9
+ vsetvli zero, t0, e8, m1, ta, ma
+ vle8.v v8, (a4)
+ add a4, a4, a2
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v12, v8, a6
+ vwmaccu.vx v12, a7, v9
+ vsetvli zero, t0, e8, m1, ta, ma
+ vle8.v v8, (a4)
+ add a4, a4, a2
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vwmulu.vx v14, v8, a6
+ vwmaccu.vx v14, a7, v9
+ vsetvli zero, t0, e8, m1, ta, ma
+ vle8.v v8, (a4)
+ add a4, a0, a5
+ add a5, a5, t1
+ vslidedown.vi v9, v8, 1
+ vsetivli zero, 8, e8, m1, ta, ma
+ vnclipu.wi v16, v10, 6
+ vle8.v v10, (a4)
+ vaaddu.vv v10, v16, v10
+ vse8.v v10, (a4)
+ add a4, a4, a2
+ vnclipu.wi v10, v12, 6
+ vle8.v v11, (a4)
+ vwmulu.vx v12, v8, a6
+ vaaddu.vv v10, v10, v11
+ vwmaccu.vx v12, a7, v9
+ vse8.v v10, (a4)
+ add a4, a4, a2
+ vnclipu.wi v10, v14, 6
+ vle8.v v8, (a4)
+ vaaddu.vv v8, v10, v8
+ vse8.v v8, (a4)
+ add a4, a4, a2
+ vnclipu.wi v8, v12, 6
+ vle8.v v9, (a4)
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a4)
+ blt t2, a3, .LBB1_13
+ j .LBB1_17
+.LBB1_14:
+ blez a3, .LBB1_17
+ li a4, 0
+ li t0, 0
+ slli a7, a2, 2
+.LBB1_16: # the final else, none of the above conditions are met
+ add a5, a1, a4
+ vsetvli zero, zero, e8, m1, ta, ma
+ addiw t0, t0, 4
+ vle8.v v8, (a5)
+ add a5, a5, a2
+ add t1, a5, a2
+ vwmulu.vx v10, v8, a6
+ vle8.v v8, (a5)
+ add a5, t1, a2
+ vle8.v v9, (t1)
+ vle8.v v12, (a5)
+ add a5, a0, a4
+ add a4, a4, a7
+ vnclipu.wi v13, v10, 6
+ vle8.v v10, (a5)
+ vwmulu.vx v14, v8, a6
+ vaaddu.vv v10, v13, v10
+ vse8.v v10, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v14, 6
+ vle8.v v10, (a5)
+ vaaddu.vv v8, v8, v10
+ vwmulu.vx v10, v9, a6
+ vse8.v v8, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v10, 6
+ vle8.v v9, (a5)
+ vwmulu.vx v10, v12, a6
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a5)
+ add a5, a5, a2
+ vnclipu.wi v8, v10, 6
+ vle8.v v9, (a5)
+ vaaddu.vv v8, v8, v9
+ vse8.v v8, (a5)
+ blt t0, a3, .LBB1_16
+.LBB1_17: # Exit h264_avg_chroma_mc8_rvv
+ ret
+.Lfunc_end1:
+ .size h264_avg_chroma_mc8_rvv, .Lfunc_end1-h264_avg_chroma_mc8_rvv
diff --git a/libavcodec/riscv/h264_mc_chroma.h b/libavcodec/riscv/h264_mc_chroma.h
new file mode 100644
index 0000000000..cb350d0e4a
--- /dev/null
+++ b/libavcodec/riscv/h264_mc_chroma.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2023 SiFive, Inc. All rights reserved.
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_RISCV_H264_MC_CHROMA_H
+#define AVCODEC_RISCV_H264_MC_CHROMA_H
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stddef.h>
+#include "config.h"
+
+#if HAVE_RVV
+void h264_put_chroma_mc8_rvv(uint8_t *p_dst, const uint8_t *p_src, ptrdiff_t stride, int h, int x, int y);
+void h264_avg_chroma_mc8_rvv(uint8_t *p_dst, const uint8_t *p_src, ptrdiff_t stride, int h, int x, int y);
+#endif
+#endif
\ No newline at end of file
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