From afb967b81e4169e9e563f6342f4f9f636627de5b Mon Sep 17 00:00:00 2001 From: sunyuechi Date: Fri, 3 Nov 2023 10:35:53 +0800 Subject: af_afir: RISC-V V fcmul_add MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Segmented loads are slow, so here we use unit-strided load and narrowing shifts. c910: fcmul_add_c: 2179 fcmul_add_rvv_f64: 1652 c908: fcmul_add_c: 4891.2 fcmul_add_rvv_f64: 2399.5 Signed-off-by: Rémi Denis-Courmont --- libavfilter/riscv/Makefile | 2 ++ libavfilter/riscv/af_afir_init.c | 42 ++++++++++++++++++++++++++++++ libavfilter/riscv/af_afir_rvv.S | 55 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 99 insertions(+) create mode 100644 libavfilter/riscv/Makefile create mode 100644 libavfilter/riscv/af_afir_init.c create mode 100644 libavfilter/riscv/af_afir_rvv.S (limited to 'libavfilter/riscv') diff --git a/libavfilter/riscv/Makefile b/libavfilter/riscv/Makefile new file mode 100644 index 0000000000..0b968a9c0d --- /dev/null +++ b/libavfilter/riscv/Makefile @@ -0,0 +1,2 @@ +OBJS += riscv/af_afir_init.o +RVV-OBJS += riscv/af_afir_rvv.o diff --git a/libavfilter/riscv/af_afir_init.c b/libavfilter/riscv/af_afir_init.c new file mode 100644 index 0000000000..52aa18c126 --- /dev/null +++ b/libavfilter/riscv/af_afir_init.c @@ -0,0 +1,42 @@ +/* + * Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS). + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#include "config.h" +#include "libavutil/attributes.h" +#include "libavutil/cpu.h" +#include "libavfilter/af_afirdsp.h" + +void ff_fcmul_add_rvv(float *sum, const float *t, const float *c, + ptrdiff_t len); + +av_cold void ff_afir_init_riscv(AudioFIRDSPContext *s) +{ +#if HAVE_RVV + int flags = av_get_cpu_flags(); + + if (flags & AV_CPU_FLAG_RVV_F64) { + if (flags & AV_CPU_FLAG_RVB_ADDR) { + s->fcmul_add = ff_fcmul_add_rvv; + } + } +#endif +} diff --git a/libavfilter/riscv/af_afir_rvv.S b/libavfilter/riscv/af_afir_rvv.S new file mode 100644 index 0000000000..04ec2e50d8 --- /dev/null +++ b/libavfilter/riscv/af_afir_rvv.S @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS). + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/riscv/asm.S" + +// void ff_fcmul_add(float *sum, const float *t, const float *c, int len) +func ff_fcmul_add_rvv, zve64f + li t1, 32 +1: + vsetvli t0, a3, e32, m4, ta, ma + vle64.v v24, (a0) + sub a3, a3, t0 + vnsrl.wx v16, v24, zero + vnsrl.wx v20, v24, t1 + vle64.v v24, (a1) + sh3add a1, t0, a1 + vnsrl.wx v0, v24, zero + vnsrl.wx v4, v24, t1 + vle64.v v24, (a2) + sh3add a2, t0, a2 + vnsrl.wx v8, v24, zero + vnsrl.wx v12, v24, t1 + vfmacc.vv v16, v0, v8 + vfmacc.vv v20, v4, v8 + vfnmsac.vv v16, v4, v12 + vfmacc.vv v20, v0, v12 + vsseg2e32.v v16, (a0) + sh3add a0, t0, a0 + bgtz a3, 1b + + flw fa0, 0(a1) + flw fa1, 0(a2) + flw fa2, 0(a0) + fmadd.s fa2, fa0, fa1, fa2 + fsw fa2, 0(a0) + + ret +endfunc -- cgit v1.2.3