From: Rémi Denis-Courmont <r...@remlab.net>
---
libavcodec/riscv/audiodsp_init.c | 2 ++
libavcodec/riscv/audiodsp_rvv.S | 19 +++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/libavcodec/riscv/audiodsp_init.c b/libavcodec/riscv/audiodsp_init.c
index ddd561484f..6f38b7bc83 100644
--- a/libavcodec/riscv/audiodsp_init.c
+++ b/libavcodec/riscv/audiodsp_init.c
@@ -29,6 +29,7 @@ void ff_vector_clipf_rvf(float *dst, const float *src, int
len, float min, float
void ff_vector_clipf_rvv(float *dst, const float *src, int len, float min,
float max);
void ff_vector_clip_int32_rvv(int32_t *dst, const int32_t *src, int32_t min,
int32_t max, unsigned int len);
+int32_t ff_scalarproduct_int16_rvv(const int16_t *v1, const int16_t *v2, int
len);
av_cold void ff_audiodsp_init_riscv(AudioDSPContext *c)
{
@@ -38,6 +39,7 @@ av_cold void ff_audiodsp_init_riscv(AudioDSPContext *c)
c->vector_clipf = ff_vector_clipf_rvf;
#if HAVE_RVV
if (flags & AV_CPU_FLAG_RV_ZVE32X) {
+ c->scalarproduct_int16 = ff_scalarproduct_int16_rvv;
c->vector_clip_int32 = ff_vector_clip_int32_rvv;
if (flags & AV_CPU_FLAG_RV_ZVE32F)
diff --git a/libavcodec/riscv/audiodsp_rvv.S b/libavcodec/riscv/audiodsp_rvv.S
index 427b424cb9..f4308f27c5 100644
--- a/libavcodec/riscv/audiodsp_rvv.S
+++ b/libavcodec/riscv/audiodsp_rvv.S
@@ -20,6 +20,25 @@
#include "libavutil/riscv/asm.S"
+func ff_scalarproduct_int16_rvv, zve32x
+ vsetvli zero, zero, e16, m1, ta, ma
+ vmv.s.x v8, zero
+1:
+ vsetvli t0, a2, e16, m1, ta, ma
+ vle16.v v16, (a0)
+ sub a2, a2, t0
+ vle16.v v24, (a1)
+ sh1add a0, t0, a0
+ vwmul.vv v0, v16, v24
+ sh1add a1, t0, a1
+ vsetvli zero, t0, e32, m2, ta, ma
+ vredsum.vs v8, v0, v8
+ bnez a2, 1b
+
+ vmv.x.s a0, v8
+ ret
+endfunc
+
func ff_vector_clip_int32_rvv, zve32x
1:
vsetvli t0, a4, e32, m1, ta, ma
--
2.37.2
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