[FFmpeg-devel] [PATCH v2 3/7] avcodec/aarch64/mpegvideoencdsp: add neon implementations for pix_sum and pix_norm1
Ramiro Polla
ramiro.polla at gmail.com
Wed Aug 21 17:55:51 EEST 2024
A55 A76
pix_norm1_c: 484.3 235.2
pix_norm1_neon: 193.8 ( 2.50x) 44.7 ( 5.26x)
pix_sum_c: 302.8 243.7
pix_sum_neon: 81.6 ( 3.71x) 26.0 ( 9.37x)
---
libavcodec/aarch64/Makefile | 2 +
libavcodec/aarch64/mpegvideoencdsp_init.c | 39 +++++++++++++
libavcodec/aarch64/mpegvideoencdsp_neon.S | 69 +++++++++++++++++++++++
libavcodec/mpegvideoencdsp.c | 4 +-
libavcodec/mpegvideoencdsp.h | 2 +
5 files changed, 115 insertions(+), 1 deletion(-)
create mode 100644 libavcodec/aarch64/mpegvideoencdsp_init.c
create mode 100644 libavcodec/aarch64/mpegvideoencdsp_neon.S
diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
index a3256bb1cc..de0653ebbc 100644
--- a/libavcodec/aarch64/Makefile
+++ b/libavcodec/aarch64/Makefile
@@ -10,6 +10,7 @@ OBJS-$(CONFIG_HPELDSP) += aarch64/hpeldsp_init_aarch64.o
OBJS-$(CONFIG_IDCTDSP) += aarch64/idctdsp_init_aarch64.o
OBJS-$(CONFIG_ME_CMP) += aarch64/me_cmp_init_aarch64.o
OBJS-$(CONFIG_MPEGAUDIODSP) += aarch64/mpegaudiodsp_init.o
+OBJS-$(CONFIG_MPEGVIDEOENC) += aarch64/mpegvideoencdsp_init.o
OBJS-$(CONFIG_NEON_CLOBBER_TEST) += aarch64/neontest.o
OBJS-$(CONFIG_PIXBLOCKDSP) += aarch64/pixblockdsp_init_aarch64.o
OBJS-$(CONFIG_VIDEODSP) += aarch64/videodsp_init.o
@@ -51,6 +52,7 @@ NEON-OBJS-$(CONFIG_IDCTDSP) += aarch64/idctdsp_neon.o \
aarch64/simple_idct_neon.o
NEON-OBJS-$(CONFIG_ME_CMP) += aarch64/me_cmp_neon.o
NEON-OBJS-$(CONFIG_MPEGAUDIODSP) += aarch64/mpegaudiodsp_neon.o
+NEON-OBJS-$(CONFIG_MPEGVIDEOENC) += aarch64/mpegvideoencdsp_neon.o
NEON-OBJS-$(CONFIG_PIXBLOCKDSP) += aarch64/pixblockdsp_neon.o
NEON-OBJS-$(CONFIG_VC1DSP) += aarch64/vc1dsp_neon.o
NEON-OBJS-$(CONFIG_VP8DSP) += aarch64/vp8dsp_neon.o
diff --git a/libavcodec/aarch64/mpegvideoencdsp_init.c b/libavcodec/aarch64/mpegvideoencdsp_init.c
new file mode 100644
index 0000000000..7eb632ed1b
--- /dev/null
+++ b/libavcodec/aarch64/mpegvideoencdsp_init.c
@@ -0,0 +1,39 @@
+/*
+ * 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 <stddef.h>
+#include <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/aarch64/cpu.h"
+#include "libavcodec/mpegvideoencdsp.h"
+#include "config.h"
+
+int ff_pix_sum16_neon(const uint8_t *pix, int line_size);
+int ff_pix_norm1_neon(const uint8_t *pix, int line_size);
+
+av_cold void ff_mpegvideoencdsp_init_aarch64(MpegvideoEncDSPContext *c,
+ AVCodecContext *avctx)
+{
+ int cpu_flags = av_get_cpu_flags();
+
+ if (have_neon(cpu_flags)) {
+ c->pix_sum = ff_pix_sum16_neon;
+ c->pix_norm1 = ff_pix_norm1_neon;
+ }
+}
diff --git a/libavcodec/aarch64/mpegvideoencdsp_neon.S b/libavcodec/aarch64/mpegvideoencdsp_neon.S
new file mode 100644
index 0000000000..6e7a9319ba
--- /dev/null
+++ b/libavcodec/aarch64/mpegvideoencdsp_neon.S
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2024 Ramiro Polla
+ *
+ * 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"
+
+function ff_pix_sum16_neon, export=1
+// x0 const uint8_t *pix
+// x1 int line_size
+
+ add x2, x0, w1, sxtw
+ sbfiz x1, x1, #1, #32
+ movi v0.16b, #0
+ mov w3, #16
+
+1:
+ ld1 {v1.16b}, [x0], x1
+ ld1 {v2.16b}, [x2], x1
+ subs w3, w3, #2
+ uadalp v0.8h, v1.16b
+ uadalp v0.8h, v2.16b
+ b.ne 1b
+
+ uaddlv s0, v0.8h
+ fmov w0, s0
+
+ ret
+endfunc
+
+function ff_pix_norm1_neon, export=1
+// x0 const uint8_t *pix
+// x1 int line_size
+
+ sxtw x1, w1
+ movi v4.16b, #0
+ movi v5.16b, #0
+ mov w2, #16
+
+1:
+ ld1 {v1.16b}, [x0], x1
+ subs w2, w2, #1
+ umull v2.8h, v1.8b, v1.8b
+ umull2 v3.8h, v1.16b, v1.16b
+ uadalp v4.4s, v2.8h
+ uadalp v5.4s, v3.8h
+ b.ne 1b
+
+ add v0.4s, v4.4s, v5.4s
+ uaddlv d0, v0.4s
+ fmov w0, s0
+
+ ret
+endfunc
diff --git a/libavcodec/mpegvideoencdsp.c b/libavcodec/mpegvideoencdsp.c
index 9ccf1c302e..1091c94574 100644
--- a/libavcodec/mpegvideoencdsp.c
+++ b/libavcodec/mpegvideoencdsp.c
@@ -245,7 +245,9 @@ av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c,
c->draw_edges = draw_edges_8_c;
-#if ARCH_ARM
+#if ARCH_AARCH64
+ ff_mpegvideoencdsp_init_aarch64(c, avctx);
+#elif ARCH_ARM
ff_mpegvideoencdsp_init_arm(c, avctx);
#elif ARCH_PPC
ff_mpegvideoencdsp_init_ppc(c, avctx);
diff --git a/libavcodec/mpegvideoencdsp.h b/libavcodec/mpegvideoencdsp.h
index 3925d87dab..f437bc4e4e 100644
--- a/libavcodec/mpegvideoencdsp.h
+++ b/libavcodec/mpegvideoencdsp.h
@@ -46,6 +46,8 @@ typedef struct MpegvideoEncDSPContext {
void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c,
AVCodecContext *avctx);
+void ff_mpegvideoencdsp_init_aarch64(MpegvideoEncDSPContext *c,
+ AVCodecContext *avctx);
void ff_mpegvideoencdsp_init_arm(MpegvideoEncDSPContext *c,
AVCodecContext *avctx);
void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c,
--
2.30.2
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