From: Rémi Denis-Courmont <r...@remlab.net>
---
libavutil/riscv/float_dsp_init.c | 9 ++++++++-
libavutil/riscv/float_dsp_rvv.S | 18 ++++++++++++++++++
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/libavutil/riscv/float_dsp_init.c b/libavutil/riscv/float_dsp_init.c
index de567c50d2..b829c0f736 100644
--- a/libavutil/riscv/float_dsp_init.c
+++ b/libavutil/riscv/float_dsp_init.c
@@ -28,12 +28,19 @@
void ff_vector_fmul_scalar_rvv(float *dst, const float *src, float mul,
int len);
+void ff_vector_dmul_scalar_rvv(double *dst, const double *src, double mul,
+ int len);
+
av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp)
{
#if HAVE_RVV
int flags = av_get_cpu_flags();
- if (flags & AV_CPU_FLAG_RV_ZVE32F)
+ if (flags & AV_CPU_FLAG_RV_ZVE32F) {
fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_rvv;
+
+ if (flags & AV_CPU_FLAG_RV_ZVE64D)
+ fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_rvv;
+ }
#endif
}
diff --git a/libavutil/riscv/float_dsp_rvv.S b/libavutil/riscv/float_dsp_rvv.S
index 5095ed5bfc..e82d56ac15 100644
--- a/libavutil/riscv/float_dsp_rvv.S
+++ b/libavutil/riscv/float_dsp_rvv.S
@@ -38,3 +38,21 @@ NOHWF mv a2, a3
ret
endfunc
+
+// (a0) = (a1) * fa0 [0..a2-1]
+func ff_vector_dmul_scalar_rvv, zve64d
+NOHWD fmv.d.x fa0, a2
+NOHWD mv a2, a3
+1:
+ vsetvli t0, a2, e64, m1, ta, ma
+ slli t1, t0, 3
+ vle64.v v16, (a1)
+ add a1, a1, t1
+ vfmul.vf v16, v16, fa0
+ sub a2, a2, t0
+ vse64.v v16, (a0)
+ add a0, a0, t1
+ bnez a2, 1b
+
+ ret
+endfunc
--
2.37.2
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