./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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