much better ME for b frames (a bit slow though)

fixed MC rounding for b frames
fixed hq mode with b-frames

Originally committed as revision 406 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 10 insertions, 0 deletions

diff --git a/libavcodec/common.h b/libavcodec/common.h
index 96b545d0dc..21cdd541b4 100644
--- a/libavcodec/common.h
+++ b/libavcodec/common.h
@@ -881,6 +881,16 @@ static inline int mid_pred(int a, int b, int c)
     return a + b + c - vmin - vmax;
 }
 
+static inline int clip(int a, int amin, int amax)
+{
+    if (a < amin)
+        return amin;
+    else if (a > amax)
+        return amax;
+    else
+        return a;
+}
+
 /* memory */
 void *av_mallocz(int size);