aarch64: h264 chroma motion compensation NEON optimizations

Since RV40 and VC-1 use almost the same algorithm so optimizations for
those two decoders are easy to do and included.

1 files changed, 48 insertions, 0 deletions

diff --git a/libavcodec/aarch64/rv40dsp_init_aarch64.c b/libavcodec/aarch64/rv40dsp_init_aarch64.c
new file mode 100644
index 0000000000..0bb404f6d2
--- /dev/null
+++ b/libavcodec/aarch64/rv40dsp_init_aarch64.c
@@ -0,0 +1,48 @@
+/*
+ * 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
+ */
+
+#include <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/aarch64/cpu.h"
+#include "libavcodec/rv34dsp.h"
+
+#include "config.h"
+
+void ff_put_rv40_chroma_mc8_neon(uint8_t *dst, uint8_t *src, int stride, int h,
+                                 int x, int y);
+void ff_put_rv40_chroma_mc4_neon(uint8_t *dst, uint8_t *src, int stride, int h,
+                                 int x, int y);
+
+void ff_avg_rv40_chroma_mc8_neon(uint8_t *dst, uint8_t *src, int stride, int h,
+                                 int x, int y);
+void ff_avg_rv40_chroma_mc4_neon(uint8_t *dst, uint8_t *src, int stride, int h,
+                                 int x, int y);
+
+av_cold void ff_rv40dsp_init_aarch64(RV34DSPContext *c)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (have_neon(cpu_flags)) {
+        c->put_chroma_pixels_tab[0] = ff_put_rv40_chroma_mc8_neon;
+        c->put_chroma_pixels_tab[1] = ff_put_rv40_chroma_mc4_neon;
+        c->avg_chroma_pixels_tab[0] = ff_avg_rv40_chroma_mc8_neon;
+        c->avg_chroma_pixels_tab[1] = ff_avg_rv40_chroma_mc4_neon;
+    }
+}