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fmt-ops: add R-V V optimizations for f32_s16

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sunyuechi 2024-09-17 08:58:14 +08:00 • committed by Wim Taymans
parent 8166b9c580
commit d932e52d5b
6 changed files with 71 additions and 0 deletions
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43
spa/plugins/audioconvert/fmt-ops-rvv.c Normal file
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@ -0,0 +1,43 @@
/* Spa */
/* SPDX-FileCopyrightText: Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS). */
/* SPDX-License-Identifier: MIT */
#include "fmt-ops.h"
#if HAVE_RVV
void
conv_f32_to_s16_rvv(struct convert *conv, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
uint32_t n_samples)
{
if (n_samples * conv->n_channels <= 4) {
conv_f32_to_s16_c(conv, dst, src, n_samples);
return;
}
__asm__ __volatile__ (
".option arch, +v \n\t"
"ld a1, (a1) \n\t"
"ld a2, (a2) \n\t"
"lwu a0, 16(a0) \n\t"
"li t0, 1191182336 \n\t"
"mul a0, a0, a3 \n\t"
"fmv.w.x fa5, t0 \n\t"
"1: \n\t"
"vsetvli t0, a0, e32, m8, ta, ma \n\t"
"vle32.v v8, (a2) \n\t"
"sub a0, a0, t0 \n\t"
"vfmul.vf v8, v8, fa5 \n\t"
"vsetvli zero, zero, e16, m4, ta, ma \n\t"
"vfncvt.x.f.w v8, v8 \n\t"
"slli t0, t0, 1 \n\t"
"vse16.v v8, (a1) \n\t"
"add a2, a2, t0 \n\t"
"add a1, a1, t0 \n\t"
"add a2, a2, t0 \n\t"
"bnez a0, 1b \n\t"
:
:
: "cc", "memory"
);
}
#endif