adding ffmpeg specific version

1 files changed, 57 insertions, 0 deletions

diff --git a/ffmpeg1/libavcodec/rnd_avg.h b/ffmpeg1/libavcodec/rnd_avg.h
new file mode 100644
index 0000000..50ab59a
--- /dev/null
+++ b/ffmpeg1/libavcodec/rnd_avg.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2001-2003 BERO <bero@geocities.co.jp>
+ * Copyright (c) 2011 Oskar Arvidsson
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_RND_AVG_H
+#define AVCODEC_RND_AVG_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define CALL_2X_PIXELS(a, b, n)\
+static void a(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h){\
+    b(block  , pixels  , line_size, h);\
+    b(block+n, pixels+n, line_size, h);\
+}
+
+#define         BYTE_VEC32(c)   ((c)*0x01010101UL)
+#define         BYTE_VEC64(c)   ((c)*0x0001000100010001UL)
+
+static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
+{
+    return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
+}
+
+static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
+{
+    return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
+}
+
+static inline uint64_t rnd_avg64(uint64_t a, uint64_t b)
+{
+    return (a | b) - (((a ^ b) & ~BYTE_VEC64(0x01)) >> 1);
+}
+
+static inline uint64_t no_rnd_avg64(uint64_t a, uint64_t b)
+{
+    return (a & b) + (((a ^ b) & ~BYTE_VEC64(0x01)) >> 1);
+}
+
+#endif /* AVCODEC_RND_AVG_H */