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Code Issues Releases Activity

lavu/floatdsp: RISC-V V butterflies_float

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Rémi Denis-Courmont 2022-09-26 17:52:35 +03:00 committed by Lynne
parent f4ea45040f
commit 47ce9735cc
2 changed files with 20 additions and 0 deletions
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2
libavutil/riscv/float_dsp_init.c
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@ -33,6 +33,7 @@ void ff_vector_fmul_scalar_rvv(float *dst, const float *src, float mul,
int len);
void ff_vector_fmul_add_rvv(float *dst, const float *src0, const float *src1,
const float *src2, int len);
void ff_butterflies_float_rvv(float *v1, float *v2, int len);
void ff_vector_dmul_rvv(double *dst, const double *src0, const double *src1,
int len);
@ -51,6 +52,7 @@ av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp)
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_rvv;
fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_rvv;
fdsp->vector_fmul_add = ff_vector_fmul_add_rvv;
fdsp->butterflies_float = ff_butterflies_float_rvv;
}
if (flags & AV_CPU_FLAG_RVV_F64) {

18
libavutil/riscv/float_dsp_rvv.S
View File

@ -93,6 +93,24 @@ func ff_vector_fmul_add_rvv, zve32f
ret
endfunc
// (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1]
func ff_butterflies_float_rvv, zve32f
1:
vsetvli t0, a2, e32, m1, ta, ma
vle32.v v16, (a0)
sub a2, a2, t0
vle32.v v24, (a1)
vfadd.vv v0, v16, v24
vfsub.vv v8, v16, v24
vse32.v v0, (a0)
sh2add a0, t0, a0
vse32.v v8, (a1)
sh2add a1, t0, a1
bnez a2, 1b
ret
endfunc
// (a0) = (a1) * (a2) [0..a3-1]
func ff_vector_dmul_rvv, zve64d
1: