[FFmpeg-devel] [PATCH 11/29] lavu/floatdsp: RISC-V V vector_fmac_scalar
remi at remlab.net
remi at remlab.net
Thu Sep 22 21:37:08 EEST 2022
From: Rémi Denis-Courmont <remi at remlab.net>
---
libavutil/riscv/float_dsp_init.c | 3 +++
libavutil/riscv/float_dsp_rvv.S | 19 +++++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/libavutil/riscv/float_dsp_init.c b/libavutil/riscv/float_dsp_init.c
index 6027a67b46..c2d93e0cd7 100644
--- a/libavutil/riscv/float_dsp_init.c
+++ b/libavutil/riscv/float_dsp_init.c
@@ -27,6 +27,8 @@
void ff_vector_fmul_rvv(float *dst, const float *src0, const float *src1,
int len);
+void ff_vector_fmac_scalar_rvv(float *dst, const float *src, float mul,
+ int len);
void ff_vector_fmul_scalar_rvv(float *dst, const float *src, float mul,
int len);
@@ -42,6 +44,7 @@ av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp)
if (flags & AV_CPU_FLAG_RV_ZVE32F) {
fdsp->vector_fmul = ff_vector_fmul_rvv;
+ fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_rvv;
fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_rvv;
if (flags & AV_CPU_FLAG_RV_ZVE64D) {
diff --git a/libavutil/riscv/float_dsp_rvv.S b/libavutil/riscv/float_dsp_rvv.S
index b16c0f3005..1c1fa906e6 100644
--- a/libavutil/riscv/float_dsp_rvv.S
+++ b/libavutil/riscv/float_dsp_rvv.S
@@ -39,6 +39,25 @@ func ff_vector_fmul_rvv, zve32f
ret
endfunc
+// (a0) += (a1) * fa0 [0..a2-1]
+func ff_vector_fmac_scalar_rvv, zve32f
+NOHWF fmv.w.x fa0, a2
+NOHWF mv a2, a3
+1:
+ vsetvli t0, a2, e32, m1, ta, ma
+ slli t1, t0, 2
+ vle32.v v24, (a1)
+ add a1, a1, t1
+ vle32.v v16, (a0)
+ vfmacc.vf v16, fa0, v24
+ sub a2, a2, t0
+ vse32.v v16, (a0)
+ add a0, a0, t1
+ bnez a2, 1b
+
+ ret
+endfunc
+
// (a0) = (a1) * fa0 [0..a2-1]
func ff_vector_fmul_scalar_rvv, zve32f
NOHWF fmv.w.x fa0, a2
--
2.37.2
More information about the ffmpeg-devel
mailing list