1 files changed, 62 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/inc/log2.h b/media/libstagefright/codecs/amrwbenc/inc/log2.h
new file mode 100644
index 0000000..91bdbec
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+++ b/media/libstagefright/codecs/amrwbenc/inc/log2.h
@@ -0,0 +1,62 @@
+
+/*
+ ** Copyright 2003-2010, VisualOn, Inc.
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+
+/********************************************************************************
+*
+*      File             : log2.h
+*      Purpose          : Computes log2(L_x)
+*
+********************************************************************************
+*/
+#ifndef __LOG2_H__
+#define __LOG2_H__
+ 
+/*
+********************************************************************************
+*                         INCLUDE FILES
+********************************************************************************
+*/
+#include "typedef.h"
+ 
+/*
+********************************************************************************
+*                         DEFINITION OF DATA TYPES
+********************************************************************************
+*/
+ 
+/*
+********************************************************************************
+*                         DECLARATION OF PROTOTYPES
+********************************************************************************
+*/
+void Log2 (
+		Word32 L_x,        /* (i) : input value                                 */
+		Word16 *exponent,  /* (o) : Integer part of Log2.   (range: 0<=val<=30) */
+		Word16 *fraction   /* (o) : Fractional part of Log2. (range: 0<=val<1)*/
+	  );
+
+void Log2_norm (
+		Word32 L_x,         /* (i) : input value (normalized)                    */
+		Word16 exp,         /* (i) : norm_l (L_x)                                */
+		Word16 *exponent,   /* (o) : Integer part of Log2.   (range: 0<=val<=30) */
+		Word16 *fraction    /* (o) : Fractional part of Log2. (range: 0<=val<1)  */
+	       );
+
+#endif  //__LOG2_H__
+
+