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114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
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/***************************************************************************\
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*
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* MPEG Layer3-Audio Decoder
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* <EFBFBD> 1997-2006 by Fraunhofer IIS
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* All Rights Reserved
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*
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* filename: mp3decode.h
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* project : ISO/MPEG-Decoder
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* author : Martin Sieler
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* date : 1998-05-26
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* contents/description: MPEG Layer-3 decoder
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*
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*
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\***************************************************************************/
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/*
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* $Date: 2011/01/28 21:45:29 $
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* $Id: mp3decode.h,v 1.5 2011/01/28 21:45:29 audiodsp Exp $
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*/
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#ifndef __MP3DECODE_H__
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#define __MP3DECODE_H__
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/* ------------------------ includes --------------------------------------*/
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#include "mpeg.h"
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#include "mpegbitstream.h"
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#include "huffdec.h"
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#include "mdct.h"
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#include "polyphase.h"
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#include "mp3ancofl.h"
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#ifdef ERROR_CONCEALMENT
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#include "conceal.h"
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#endif
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/*-------------------------------------------------------------------------*/
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//
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// MPEG Layer-3 decoding class.
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//
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// This is the main MPEG Layer-3 decoder object.
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//
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class NALIGN(16) CMp3Decode
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{
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public:
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CMp3Decode(CMpegBitStream &_Bs, int _crc_check, DecoderHooks *_hooks=0);
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~CMp3Decode();
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void Init(bool fFullReset = true);
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// PcmFormat: 0: integer, 1: 32 bit float (IEEE)
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SSC Decode(float *pPcm,
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size_t cbPcm,
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size_t *pcbUsed,
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unsigned char *ancData,
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size_t *numAncBytes = 0,
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int oflOn = 0,
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unsigned int *startDelay = 0,
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unsigned int *totalLength = 0);
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SSC GetLastAncData(unsigned char* ancData, size_t *numAncBytes);
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SSC GetOflVersion(int* oflVersion);
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protected:
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SSC DecodeOnNoMainData(float *pPcm);
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SSC DecodeNormal (float *pPcm, bool fCrcOk);
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void PolyphaseReorder();
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void ZeroISpectrum();
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void ZeroSpectrum();
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void ZeroPolySpectrum();
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void SetInfo();
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CMp3Huffman m_Mp3Huffman; // huffman decoder
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CMdct m_Mdct; // mdct
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CPolyphase m_Polyphase; // polyphase
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CMp3AncOfl m_AncOfl; // ancillary data and ofl
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#ifdef ERROR_CONCEALMENT
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CErrorConcealment m_Conceal; // error concealment
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#endif
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MPEG_INFO m_Info; // info structure
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CMpegBitStream &m_Bs; // bitstream
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CBitStream m_Db; // dynamic buffer
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MP3SI m_Si; // side info
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MP3SCF m_ScaleFac[2]; // scalefactors
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int m_ISpectrum[2][SSLIMIT*SBLIMIT]; // spectrum (integer)
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NALIGN(16) SPECTRUM m_Spectrum; // spectrum (float)
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NALIGN(16) POLYSPECTRUM m_PolySpectrum; // spectrum (post-mdct)
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int m_crc_check; // 0: no CRC check, 1: fail on CRC errors
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protected:
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enum { dynBufSize = 2048 } ;
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unsigned char m_dynBufMemory [dynBufSize] ;
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private:
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DecoderHooks *hooks;
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};
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/*-------------------------------------------------------------------------*/
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#endif
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