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62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/* $Header: /cvs/root/winamp/vlb/stereo.h,v 1.1 2009/04/28 20:21:10 audiodsp Exp $ */
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/***************************************************************************\
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*
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* Copyright 2000-2002 Dolby Laboratories, Inc. All Rights
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* Reserved. Do not copy. Do not distribute.
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* Confidential information.
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*
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* (C) copyright Fraunhofer - IIS (1998)
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* All Rights Reserved
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*
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* filename: stereo.h
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* project : MPEG-2 AAC Decoder
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* contents/description: mid/side and intensity stereo processing
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*
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\***************************************************************************/
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#ifndef __STEREO_H__
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#define __STEREO_H__
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#include "bitsequence.h"
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class CChannelInfo ;
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class CBlock ;
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/** Joint Stereo Processing.
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This class represents the stereo processing tool for decoding mid/side and
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intensity coded bands of spectral coefficients.
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The Stereo Processing tool is not profile-dependent and the CJointStereo
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implementation follows the Read()/Apply() convention used for all tools
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as far as applicable.
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*/
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class CJointStereo
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{
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public :
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CJointStereo () ;
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~CJointStereo () ;
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void Read (const CChannelInfo &info, CDolbyBitStream &bs) ;
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void ApplyMS (const CChannelInfo &info, CBlock &left, CBlock &right) ;
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void ApplyIS (const CChannelInfo &info, CBlock &left, CBlock &right) ;
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protected :
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enum
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{
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MaximumGroups = 8,
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MaximumBands = 64
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} ;
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bool m_MsUsed [CJointStereo::MaximumGroups][CJointStereo::MaximumBands] ;
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CVLBBitSequence m_MsMaskPresent ;
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} ;
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#endif
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