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authorDave Burke <daveburke@google.com>2012-04-17 09:51:45 -0700
committerDave Burke <daveburke@google.com>2012-04-17 23:04:43 -0700
commit9bf37cc9712506b2483650c82d3c41152337ef7e (patch)
tree77db44e2bae06e3d144b255628be2b7a55c581d3 /libSBRdec/src/sbrdec_drc.h
parenta37315fe10ee143d6d0b28c19d41a476a23e63ea (diff)
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Fraunhofer AAC codec.
License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
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diff --git a/libSBRdec/src/sbrdec_drc.h b/libSBRdec/src/sbrdec_drc.h
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+/***************************** MPEG-4 AAC Decoder **************************
+
+ (C) Copyright Fraunhofer IIS (2004)
+ All Rights Reserved
+
+ Please be advised that this software and/or program delivery is
+ Confidential Information of Fraunhofer and subject to and covered by the
+
+ Fraunhofer IIS Software Evaluation Agreement
+ between Google Inc. and Fraunhofer
+ effective and in full force since March 1, 2012.
+
+ You may use this software and/or program only under the terms and
+ conditions described in the above mentioned Fraunhofer IIS Software
+ Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+ $Id$
+ Author(s): Christian Griebel
+ Description: Dynamic range control (DRC) decoder tool for SBR
+
+ This software and/or program is protected by copyright law and international
+ treaties. Any reproduction or distribution of this software and/or program,
+ or any portion of it, may result in severe civil and criminal penalties, and
+ will be prosecuted to the maximum extent possible under law.
+
+******************************************************************************/
+
+#ifndef _SBRDEC_DRC_H_
+#define _SBRDEC_DRC_H_
+
+#include "sbrdecoder.h"
+
+
+#define SBRDEC_MAX_DRC_CHANNELS (6)
+#define SBRDEC_MAX_DRC_BANDS ( 16 )
+
+typedef struct
+{
+ FIXP_DBL prevFact_mag[(64)];
+ INT prevFact_exp;
+
+ FIXP_DBL currFact_mag[SBRDEC_MAX_DRC_BANDS];
+ FIXP_DBL nextFact_mag[SBRDEC_MAX_DRC_BANDS];
+ INT currFact_exp;
+ INT nextFact_exp;
+
+ UINT numBandsCurr;
+ UINT numBandsNext;
+ USHORT bandTopCurr[SBRDEC_MAX_DRC_BANDS];
+ USHORT bandTopNext[SBRDEC_MAX_DRC_BANDS];
+
+ SHORT drcInterpolationSchemeCurr;
+ SHORT drcInterpolationSchemeNext;
+
+ SHORT enable;
+
+ UCHAR winSequenceCurr;
+ UCHAR winSequenceNext;
+
+} SBRDEC_DRC_CHANNEL;
+
+typedef SBRDEC_DRC_CHANNEL * HANDLE_SBR_DRC_CHANNEL;
+
+
+void sbrDecoder_drcInitChannel (
+ HANDLE_SBR_DRC_CHANNEL hDrcData );
+
+void sbrDecoder_drcUpdateChannel (
+ HANDLE_SBR_DRC_CHANNEL hDrcData );
+
+void sbrDecoder_drcApplySlot (
+ HANDLE_SBR_DRC_CHANNEL hDrcData,
+ FIXP_DBL *qmfRealSlot,
+ FIXP_DBL *qmfImagSlot,
+ int col,
+ int numQmfSubSamples,
+ int maxShift );
+
+void sbrDecoder_drcApply (
+ HANDLE_SBR_DRC_CHANNEL hDrcData,
+ FIXP_DBL **QmfBufferReal,
+ FIXP_DBL **QmfBufferImag,
+ int numQmfSubSamples,
+ int *scaleFactor );
+
+
+#endif /* _SBRDEC_DRC_H_ */