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