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lavc/sbrdsp: R-V V sbr_hf_g_filt

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hf_g_filt_c:      1552.5
hf_g_filt_rvv_f32: 679.5
This commit is contained in:
Rémi Denis-Courmont 2023-10-30 22:03:59 +02:00
parent 44a0148fad
commit f68ad5d2de
2 changed files with 23 additions and 0 deletions
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3
libavcodec/riscv/sbrdsp_init.c
View File

@ -26,6 +26,8 @@
void ff_sbr_sum64x5_rvv(float *z);
float ff_sbr_sum_square_rvv(float (*x)[2], int n);
void ff_sbr_neg_odd_64_rvv(float *x);
void ff_sbr_hf_g_filt_rvv(float (*Y)[2], const float (*X_high)[40][2],
const float *g_filt, int m_max, intptr_t ixh);
av_cold void ff_sbrdsp_init_riscv(SBRDSPContext *c)
{
@ -35,6 +37,7 @@ av_cold void ff_sbrdsp_init_riscv(SBRDSPContext *c)
if ((flags & AV_CPU_FLAG_RVV_F32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
c->sum64x5 = ff_sbr_sum64x5_rvv;
c->sum_square = ff_sbr_sum_square_rvv;
c->hf_g_filt = ff_sbr_hf_g_filt_rvv;
}
#if __riscv_xlen >= 64
if ((flags & AV_CPU_FLAG_RVV_I64) && (flags & AV_CPU_FLAG_RVB_ADDR))

20
libavcodec/riscv/sbrdsp_rvv.S
View File

@ -84,3 +84,23 @@ func ff_sbr_neg_odd_64_rvv, zve64x
ret
endfunc
#endif
func ff_sbr_hf_g_filt_rvv, zve32f
li t1, 40 * 2 * 4
sh3add a1, a4, a1
1:
vsetvli t0, a3, e32, m4, ta, ma
vlsseg2e32.v v16, (a1), t1
mul t2, t0, t1
vle32.v v8, (a2)
sub a3, a3, t0
vfmul.vv v16, v16, v8
add a1, t2, a1
vfmul.vv v20, v20, v8
sh2add a2, t0, a2
vsseg2e32.v v16, (a0)
sh3add a0, t0, a0
bnez a3, 1b
ret
endfunc