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diff --git a/media/libstagefright/codecs/aacenc/inc/channel_map.h b/media/libstagefright/codecs/aacenc/inc/channel_map.h
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+/*
+ ** 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: channel_map.h
+
+ Content: channel mapping functions
+
+*******************************************************************************/
+
+#ifndef _CHANNEL_MAP_H
+#define _CHANNEL_MAP_H
+
+#include "psy_const.h"
+#include "qc_data.h"
+
+Word16 InitElementInfo (Word16 nChannels, ELEMENT_INFO* elInfo);
+
+Word16 InitElementBits(ELEMENT_BITS *elementBits,
+ ELEMENT_INFO elInfo,
+ Word32 bitrateTot,
+ Word16 averageBitsTot,
+ Word16 staticBitsTot);
+
+#endif /* CHANNEL_MAP_H */