89 lines
2.0 KiB
C++
89 lines
2.0 KiB
C++
/* $Header: /cvs/root/winamp/vlb/adif.cpp,v 1.1 2009/04/28 20:21:07 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: adif.cpp
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* project : MPEG-2 AAC Decoder
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* contents/description: audio data interchange format header
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*
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\***************************************************************************/
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#include "adif.h"
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// CAUTION: some elements read more than 16bits,
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// this is not supported by CDolbyBitStream::Get().
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CAdifHeader::CAdifHeader ()
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: m_CopyrightIdPresent (1),
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m_OriginalCopy (1),
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m_Home (1),
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m_BitstreamType (1),
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m_NumProgramConfigElements (4)
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{
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m_BitRate = 0 ;
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}
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CAdifHeader::~CAdifHeader ()
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{
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}
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#include<stdio.h>
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void CAdifHeader::Read (CDolbyBitStream &bs)
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{
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char A[4];
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A[0]=(char)(bs.Get (8));
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A[1]=(char)(bs.Get (8));
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A[2]=(char)(bs.Get (8));
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A[3]=(char)(bs.Get (8));
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if (A[0]!= 'A') throw ENoAdifHeader () ;
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if (A[1]!= 'D') throw ENoAdifHeader () ;
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if (A[2]!= 'I') throw ENoAdifHeader () ;
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if (A[3]!= 'F') throw ENoAdifHeader () ;
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if (m_CopyrightIdPresent.Read (bs))
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{
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for (int i = 0 ; i < 9 ; i++)
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{
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bs.Get (8) ; // CopyrightId
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}
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}
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m_OriginalCopy.Read (bs) ;
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m_Home.Read (bs) ;
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m_BitstreamType.Read (bs) ;
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m_BitRate = bs.Get (16) ;
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m_BitRate <<= 7 ;
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m_BitRate |= bs.Get (7) ;
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//
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m_NumProgramConfigElements.Read (bs) ;
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for (int i = 0 ; i <= m_NumProgramConfigElements ; i++)
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{
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if (m_BitstreamType == 0)
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{
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// we don't care much about adif_buffer_fullness
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bs.Get (16) ;
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bs.Get (4) ;
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}
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m_ProgramConfigElement[i].Read (bs);
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}
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}
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CProgramConfig &CAdifHeader::GetProgramConfig (int index)
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{
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return m_ProgramConfigElement [index] ;
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}
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