From eeebe6ad1fe61fc0be2e63658abb6441ab38c916 Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Date: Thu, 28 Sep 2006 08:04:16 +0000
Subject: [PATCH] add FASTDIV macro for ARM. Reported speed-up on MPEG-4
 decoding: 1.8% Patch by Siarhei Siamashka %siarhei P siamashka A gmail P com%
 Original thread: Date: Sep 28, 2006 2:26 AM Subject: [Ffmpeg-devel] [PATCH]
 ARM implementation of FASTDIV

Originally committed as revision 6366 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavutil/internal.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/libavutil/internal.h b/libavutil/internal.h
index 83f776cc2e..96a6d29d8a 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -114,6 +114,17 @@ extern const uint32_t inverse[256];
             );\
         ret;\
     })
+#elif defined(ARCH_ARMV4L)
+#    define FASTDIV(a,b) \
+    ({\
+        int ret,dmy;\
+        asm volatile(\
+            "umull %1, %0, %2, %3"\
+            :"=&r"(ret),"=&r"(dmy)\
+            :"r"(a),"r"(inverse[b])\
+            );\
+        ret;\
+    })
 #elif defined(CONFIG_FASTDIV)
 #    define FASTDIV(a,b)   ((uint32_t)((((uint64_t)a)*inverse[b])>>32))
 #else