Seems very trivial.
On 1/18/20, Zhao Zhili <quinkbl...@foxmail.com> wrote:
> ./ffmpeg -threads 1 -f lavfi -i anoisesrc -f lavfi -t 30 -i anoisesrc -t
> 600 -lavfi afir -benchmark -f null -
>
> Test results on Snapdragon 845:
> Without SIMD:
> size=N/A time=00:10:00.00 bitrate=N/A speed=32.2x
> bench: utime=21.900s stime=1.000s rtime=18.607s
> bench: maxrss=46708kB
> With SIMD:
> size=N/A time=00:10:00.00 bitrate=N/A speed=46.6x
> bench: utime=16.150s stime=1.040s rtime=12.867s
> bench: maxrss=46608kB
>
> Test results on HiSilicon Kirin 970:
> Without SIMD:
> size=N/A time=00:10:00.00 bitrate=N/A speed=20.7x
> bench: utime=32.292s stime=1.032s rtime=28.963s
> bench: maxrss=42412kB
> With SIMD:
> size=N/A time=00:10:00.00 bitrate=N/A speed=27.6x
> bench: utime=24.964s stime=0.952s rtime=21.703s
> bench: maxrss=42368kB
>
> ---
> libavfilter/aarch64/Makefile | 2 ++
> libavfilter/aarch64/af_afir_init.c | 31 +++++++++++++++++++++
> libavfilter/aarch64/af_afir_neon.S | 43 ++++++++++++++++++++++++++++++
> libavfilter/af_afir.c | 2 ++
> libavfilter/af_afir.h | 1 +
> 5 files changed, 79 insertions(+)
> create mode 100644 libavfilter/aarch64/af_afir_init.c
> create mode 100644 libavfilter/aarch64/af_afir_neon.S
>
> diff --git a/libavfilter/aarch64/Makefile b/libavfilter/aarch64/Makefile
> index b58daa3a3f..f52d7a4842 100644
> --- a/libavfilter/aarch64/Makefile
> +++ b/libavfilter/aarch64/Makefile
> @@ -1,3 +1,5 @@
> +OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/af_afir_init.o
> OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/vf_nlmeans_init.o
>
> +NEON-OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/af_afir_neon.o
> NEON-OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/vf_nlmeans_neon.o
> diff --git a/libavfilter/aarch64/af_afir_init.c
> b/libavfilter/aarch64/af_afir_init.c
> new file mode 100644
> index 0000000000..db06536380
> --- /dev/null
> +++ b/libavfilter/aarch64/af_afir_init.c
> @@ -0,0 +1,31 @@
> +/*
> + * 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/aarch64/cpu.h"
> +#include "libavfilter/af_afir.h"
> +
> +void ff_fcmul_add_neon(float *sum, const float *t, const float *c,
> + ptrdiff_t len);
> +
> +av_cold void ff_afir_init_aarch64(AudioFIRDSPContext *s)
> +{
> + int cpu_flags = av_get_cpu_flags();
> +
> + if (have_neon(cpu_flags))
> + s->fcmul_add = ff_fcmul_add_neon;
> +}
> diff --git a/libavfilter/aarch64/af_afir_neon.S
> b/libavfilter/aarch64/af_afir_neon.S
> new file mode 100644
> index 0000000000..60583f9591
> --- /dev/null
> +++ b/libavfilter/aarch64/af_afir_neon.S
> @@ -0,0 +1,43 @@
> +/*
> + * Copyright (c) 2020 Zhao Zhili
> + *
> + * 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/aarch64/asm.S"
> +
> +// void ff_fcmul_add_neon(float *sum, const float *t, const float *c,
> ptrdiff_t len);
> +function ff_fcmul_add_neon, export=1
> +1:
> + ld2 {v0.4S, v1.4S}, [x1], #32 // load t
> + ld2 {v2.4S, v3.4S}, [x2], #32 // load c
> + ld2 {v4.4S, v5.4S}, [x0] // load sum
> + fmla v4.4S, v0.4S, v2.4S
> + fmls v4.4S, v1.4S, v3.4S
> + fmla v5.4S, v0.4S, v3.4S
> + fmla v5.4S, v1.4S, v2.4S
> + st2 {v4.4S, v5.4S}, [x0], #32 // store sum
> + subs x3, x3, #4
> + b.ne 1b
> + ldr s0, [x1] // load t
> + ldr s1, [x2] // load c
> + ldr s2, [x0] // load sum
> + fmul s0, s0, s1
> + fadd s2, s2, s0
> + str s2, [x0] // store sum
> + ret
> +endfunc
> diff --git a/libavfilter/af_afir.c b/libavfilter/af_afir.c
> index 7c7e8458d4..25dddc8c6b 100644
> --- a/libavfilter/af_afir.c
> +++ b/libavfilter/af_afir.c
> @@ -829,6 +829,8 @@ void ff_afir_init(AudioFIRDSPContext *dsp)
>
> if (ARCH_X86)
> ff_afir_init_x86(dsp);
> + if (ARCH_AARCH64)
> + ff_afir_init_aarch64(dsp);
> }
>
> static av_cold int init(AVFilterContext *ctx)
> diff --git a/libavfilter/af_afir.h b/libavfilter/af_afir.h
> index 4f44675848..d5f32f50a4 100644
> --- a/libavfilter/af_afir.h
> +++ b/libavfilter/af_afir.h
> @@ -101,6 +101,7 @@ typedef struct AudioFIRContext {
> } AudioFIRContext;
>
> void ff_afir_init(AudioFIRDSPContext *s);
> +void ff_afir_init_aarch64(AudioFIRDSPContext *s);
> void ff_afir_init_x86(AudioFIRDSPContext *s);
>
> #endif /* AVFILTER_AFIR_H */
> --
> 2.24.0
>
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