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lavc/aacencdsp: R-V V quant_bands 

T-Head C908:
quant_bands_signed_c:        576.0
quant_bands_signed_rvv_f32:   48.7
quant_bands_unsigned_c:      414.2
quant_bands_unsigned_rvv_f32: 31.7

SpacemiT X60:
quant_bands_signed_c:        497.7
quant_bands_signed_rvv_f32:   23.0
quant_bands_unsigned_c:      353.5
quant_bands_unsigned_rvv_f32: 16.2
This commit is contained in:
Rémi Denis-Courmont 2024-05-31 22:17:19 +03:00
parent be6f8c439a
commit fd4977c876
2 changed files with 34 additions and 0 deletions
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3
libavcodec/riscv/aacencdsp_init.c
View File

@ -26,6 +26,8 @@
#include "libavcodec/aacencdsp.h"
void ff_abs_pow34_rvv(float *out, const float *in, const int size);
void ff_aac_quant_bands_rvv(int *, const float *, const float *, int, int,
int, const float, const float);
av_cold void ff_aacenc_dsp_init_riscv(AACEncDSPContext *s)
{
@ -35,6 +37,7 @@ av_cold void ff_aacenc_dsp_init_riscv(AACEncDSPContext *s)
if (flags & AV_CPU_FLAG_RVV_F32) {
if (flags & AV_CPU_FLAG_RVB_ADDR) {
s->abs_pow34 = ff_abs_pow34_rvv;
s->quant_bands = ff_aac_quant_bands_rvv;
}
}
#endif

31
libavcodec/riscv/aacencdsp_rvv.S
View File

@ -1,5 +1,6 @@
/*
* Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS).
* Copyright © 2024 Rémi Denis-Courmont.
*
* This file is part of FFmpeg.
*
@ -36,3 +37,33 @@ func ff_abs_pow34_rvv, zve32f
ret
endfunc
func ff_aac_quant_bands_rvv, zve32f
NOHWF fmv.w.x fa0, a6
NOHWF fmv.w.x fa1, a7
fcvt.s.w ft0, a5
bnez a4, .L1 # signed?
.irp signed, 0, 1
.L\signed:
vsetvli t0, a3, e32, m8, ta, ma
vle32.v v16, (a2)
sub a3, a3, t0
.if \signed
vle32.v v8, (a1)
sh2add a1, t0, a1
.endif
vfmul.vf v16, v16, fa0
sh2add a2, t0, a2
vfadd.vf v16, v16, fa1
vfmin.vf v16, v16, ft0
.if \signed
vfsgnjx.vv v16, v16, v8
.endif
vfcvt.x.f.v v16, v16
vse32.v v16, (a0)
sh2add a0, t0, a0
bnez a3, .L\signed
ret
.endr
endfunc