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diff --git a/media/libstagefright/codecs/aacenc/inc/quantize.h b/media/libstagefright/codecs/aacenc/inc/quantize.h
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+++ b/media/libstagefright/codecs/aacenc/inc/quantize.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:		quantize.h
+
+	Content:	Quantization functions
+
+*******************************************************************************/
+
+#ifndef _QUANTIZE_H_
+#define _QUANTIZE_H_
+#include "typedefs.h"
+
+/* quantizing */
+
+#define MAX_QUANT 8191
+
+void QuantizeSpectrum(Word16 sfbCnt, 
+                      Word16 maxSfbPerGroup,
+                      Word16 sfbPerGroup,
+                      Word16 *sfbOffset, Word32 *mdctSpectrum,
+                      Word16 globalGain, Word16 *scalefactors,
+                      Word16 *quantizedSpectrum);
+
+Word32 calcSfbDist(const Word32 *spec,
+                   Word16  sfbWidth,
+                   Word16  gain);
+
+#endif /* _QUANTIZE_H_ */