aarch64: NEON optimized FIR audio resampling

Optimized for the default filter length 16.

30% faster opus silk decoding.

1 files changed, 28 insertions, 0 deletions

diff --git a/libavresample/aarch64/asm-offsets.h b/libavresample/aarch64/asm-offsets.h
new file mode 100644
index 0000000000..856f191b23
--- /dev/null
+++ b/libavresample/aarch64/asm-offsets.h
@@ -0,0 +1,28 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVRESAMPLE_AARCH64_ASM_OFFSETS_H
+#define AVRESAMPLE_AARCH64_ASM_OFFSETS_H
+
+/* struct ResampleContext */
+#define FILTER_BANK                     0x10
+#define FILTER_LENGTH                   0x18
+#define PHASE_SHIFT                     0x34
+#define PHASE_MASK                      (PHASE_SHIFT + 0x04) // loaded as pair
+
+#endif /* AVRESAMPLE_AARCH64_ASM_OFFSETS_H */