90 lines
1.7 KiB
C++
90 lines
1.7 KiB
C++
/* $Header: /cvs/root/winamp/vlb/overlapadd.h,v 1.2 2011/06/13 02:06:03 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: overlapadd.h
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* project : MPEG-2 AAC Decoder
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* contents/description: time domain overlap add buffer object
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*
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\***************************************************************************/
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#ifndef __OVERLAPADD_H__
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#define __OVERLAPADD_H__
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/** Buffer For Time Domain Overlap/Add Data.
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This simple helper class provides a self-initializing buffer for one frame
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worth of time domain signal data, associated window shape information and
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appropriate access methods.
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*/
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class COverlapAddBuffer
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{
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protected :
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enum
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{
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BufferSize = 1024
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} ;
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public :
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COverlapAddBuffer ()
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{
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m_WindowShape = 0 ;
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for (int i = 0 ; i < COverlapAddBuffer::BufferSize ; i++)
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{
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m_Buffer [i] = 0.0F ;
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}
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}
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~COverlapAddBuffer () {} ;
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// buffer access
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float &operator [] (int index)
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{
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return m_Buffer [index] ;
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}
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// window shape access
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int GetWindowShape (void) const
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{
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return m_WindowShape ;
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}
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void SetWindowShape (int shape)
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{
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m_WindowShape = shape ;
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}
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#if defined (WIN32) && defined (_M_IX86)
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float *AccessBuffer (void)
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{
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return m_Buffer ;
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}
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#endif
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protected :
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int m_WindowShape ;
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float m_Buffer [COverlapAddBuffer::BufferSize] ;
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} ;
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#endif
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