@@ -46,6 +46,8 @@ void ff_vector_dmac_scalar_rvv(double *dst, const double *src, double mul,
int len);
void ff_vector_dmul_scalar_rvv(double *dst, const double *src, double mul,
int len);
+double ff_scalarproduct_double_rvv(const double *v1, const double *v2,
+ size_t len);
av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp)
{
@@ -68,6 +70,7 @@ av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp)
fdsp->vector_dmul = ff_vector_dmul_rvv;
fdsp->vector_dmac_scalar = ff_vector_dmac_scalar_rvv;
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_rvv;
+ fdsp->scalarproduct_double = ff_scalarproduct_double_rvv;
}
}
#endif
@@ -249,3 +249,24 @@ NOHWD mv a2, a3
ret
endfunc
+
+func ff_scalarproduct_double_rvv, zve64f
+ vsetvli t0, zero, e64, m8, ta, ma
+ vmv.v.x v8, zero
+ vmv.s.x v0, zero
+1:
+ vsetvli t0, a2, e64, m8, tu, ma
+ vle64.v v16, (a0)
+ sub a2, a2, t0
+ vle64.v v24, (a1)
+ sh3add a0, t0, a0
+ vfmacc.vv v8, v16, v24
+ sh3add a1, t0, a1
+ bnez a2, 1b
+
+ vsetvli t0, zero, e64, m8, ta, ma
+ vfredusum.vs v0, v8, v0
+ vfmv.f.s fa0, v0
+NOHWD fmv.x.w a0, fa0
+ ret
+endfunc