From b39a2d19d4d59d21ae1d0413e0e9ca0e08f2d1e9 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Tue, 22 Jun 2010 19:15:27 +0000
Subject: [PATCH] Add a macro to pack 4 bytes into native byte-order so they
 can be written at once using a single 32-bit store.

Originally committed as revision 23715 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/mathops.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavcodec/mathops.h b/libavcodec/mathops.h
index df692fdfd3..917112b86e 100644
--- a/libavcodec/mathops.h
+++ b/libavcodec/mathops.h
@@ -146,5 +146,13 @@ if ((y) < (x)) {\
 #   define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
 #endif
 
+#ifndef PACK4x8
+# if HAVE_BIGENDIAN
+#  define PACK4x8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
+# else
+#  define PACK4x8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a))
+# endif
+#endif
+
 #endif /* AVCODEC_MATHOPS_H */