aarch64: h264 idct NEON assembler optimizations

Ported from ARMv7 NEON.

1 files changed, 61 insertions, 0 deletions

diff --git a/libavcodec/aarch64/neon.S b/libavcodec/aarch64/neon.S
new file mode 100644
index 0000000000..3af9bcdabd
--- /dev/null
+++ b/libavcodec/aarch64/neon.S
@@ -0,0 +1,61 @@
+/*
+ * 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
+ */
+
+.macro  transpose_4x4H  r0, r1, r2, r3, r4, r5, r6, r7
+        trn1            \r4\().4H,  \r0\().4H,  \r1\().4H
+        trn2            \r5\().4H,  \r0\().4H,  \r1\().4H
+        trn1            \r7\().4H,  \r3\().4H,  \r2\().4H
+        trn2            \r6\().4H,  \r3\().4H,  \r2\().4H
+        trn1            \r0\().2S,  \r4\().2S,  \r7\().2S
+        trn2            \r3\().2S,  \r4\().2S,  \r7\().2S
+        trn1            \r1\().2S,  \r5\().2S,  \r6\().2S
+        trn2            \r2\().2S,  \r5\().2S,  \r6\().2S
+.endm
+
+.macro  transpose_8x8H  r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
+        trn1            \r8\().8H,  \r0\().8H,  \r1\().8H
+        trn2            \r9\().8H,  \r0\().8H,  \r1\().8H
+        trn1            \r1\().8H,  \r2\().8H,  \r3\().8H
+        trn2            \r3\().8H,  \r2\().8H,  \r3\().8H
+        trn1            \r0\().8H,  \r4\().8H,  \r5\().8H
+        trn2            \r5\().8H,  \r4\().8H,  \r5\().8H
+        trn1            \r2\().8H,  \r6\().8H,  \r7\().8H
+        trn2            \r7\().8H,  \r6\().8H,  \r7\().8H
+
+        trn1            \r4\().4S,  \r0\().4S,  \r2\().4S
+        trn2            \r2\().4S,  \r0\().4S,  \r2\().4S
+        trn1            \r6\().4S,  \r5\().4S,  \r7\().4S
+        trn2            \r7\().4S,  \r5\().4S,  \r7\().4S
+        trn1            \r5\().4S,  \r9\().4S,  \r3\().4S
+        trn2            \r9\().4S,  \r9\().4S,  \r3\().4S
+        trn1            \r3\().4S,  \r8\().4S,  \r1\().4S
+        trn2            \r8\().4S,  \r8\().4S,  \r1\().4S
+
+        trn1            \r0\().2D,  \r3\().2D,  \r4\().2D
+        trn2            \r4\().2D,  \r3\().2D,  \r4\().2D
+
+        trn1            \r1\().2D,  \r5\().2D,  \r6\().2D
+        trn2            \r5\().2D,  \r5\().2D,  \r6\().2D
+
+        trn2            \r6\().2D,  \r8\().2D,  \r2\().2D
+        trn1            \r2\().2D,  \r8\().2D,  \r2\().2D
+
+        trn1            \r3\().2D,  \r9\().2D,  \r7\().2D
+        trn2            \r7\().2D,  \r9\().2D,  \r7\().2D
+
+.endm