Initial community commit

Src/replicant/nsmp3dec/mp3decode.h

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+/***************************************************************************\
+*
+*                    MPEG Layer3-Audio Decoder
+*                  <20> 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