Outline but no actual functions.
Signed-off-by: John Cox <j...@kynesim.co.uk>
---
libavfilter/aarch64/Makefile | 2 ++
libavfilter/aarch64/vf_bwdif_init_aarch64.c | 39 +++++++++++++++++++++
libavfilter/aarch64/vf_bwdif_neon.S | 25 +++++++++++++
libavfilter/bwdif.h | 1 +
libavfilter/vf_bwdif.c | 2 ++
5 files changed, 69 insertions(+)
create mode 100644 libavfilter/aarch64/vf_bwdif_init_aarch64.c
create mode 100644 libavfilter/aarch64/vf_bwdif_neon.S
diff --git a/libavfilter/aarch64/Makefile b/libavfilter/aarch64/Makefile
index b58daa3a3f..b68209bc94 100644
--- a/libavfilter/aarch64/Makefile
+++ b/libavfilter/aarch64/Makefile
@@ -1,3 +1,5 @@
+OBJS-$(CONFIG_BWDIF_FILTER) += aarch64/vf_bwdif_init_aarch64.o
OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/vf_nlmeans_init.o
+NEON-OBJS-$(CONFIG_BWDIF_FILTER) += aarch64/vf_bwdif_neon.o
NEON-OBJS-$(CONFIG_NLMEANS_FILTER) += aarch64/vf_nlmeans_neon.o
diff --git a/libavfilter/aarch64/vf_bwdif_init_aarch64.c
b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
new file mode 100644
index 0000000000..86d53b2ca1
--- /dev/null
+++ b/libavfilter/aarch64/vf_bwdif_init_aarch64.c
@@ -0,0 +1,39 @@
+/*
+ * bwdif aarch64 NEON optimisations
+ *
+ * Copyright (c) 2023 John Cox <j...@kynesim.co.uk>
+ *
+ * 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/common.h"
+#include "libavfilter/bwdif.h"
+#include "libavutil/aarch64/cpu.h"
+
+void
+ff_bwdif_init_aarch64(BWDIFContext *s, int bit_depth)
+{
+ const int cpu_flags = av_get_cpu_flags();
+
+ if (bit_depth != 8)
+ return;
+
+ if (!have_neon(cpu_flags))
+ return;
+
+}
+
diff --git a/libavfilter/aarch64/vf_bwdif_neon.S
b/libavfilter/aarch64/vf_bwdif_neon.S
new file mode 100644
index 0000000000..639ab22998
--- /dev/null
+++ b/libavfilter/aarch64/vf_bwdif_neon.S
@@ -0,0 +1,25 @@
+/*
+ * bwdif aarch64 NEON optimisations
+ *
+ * Copyright (c) 2023 John Cox <j...@kynesim.co.uk>
+ *
+ * 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"
+
diff --git a/libavfilter/bwdif.h b/libavfilter/bwdif.h
index 5749345f78..6a0f70487a 100644
--- a/libavfilter/bwdif.h
+++ b/libavfilter/bwdif.h
@@ -39,5 +39,6 @@ typedef struct BWDIFContext {
void ff_bwdif_init_filter_line(BWDIFContext *bwdif, int bit_depth);
void ff_bwdif_init_x86(BWDIFContext *bwdif, int bit_depth);
+void ff_bwdif_init_aarch64(BWDIFContext *bwdif, int bit_depth);
#endif /* AVFILTER_BWDIF_H */
diff --git a/libavfilter/vf_bwdif.c b/libavfilter/vf_bwdif.c
index e278cf1217..39a51429ac 100644
--- a/libavfilter/vf_bwdif.c
+++ b/libavfilter/vf_bwdif.c
@@ -369,6 +369,8 @@ av_cold void ff_bwdif_init_filter_line(BWDIFContext *s, int
bit_depth)
#if ARCH_X86
ff_bwdif_init_x86(s, bit_depth);
+#elif ARCH_AARCH64
+ ff_bwdif_init_aarch64(s, bit_depth);
#endif
}
--
2.39.2
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