rmaac-detector.h

Sigma SMP8634 Mrua v. 2.8.2.0

/*****************************************
 Copyright © 2001-2003  
 Sigma Designs, Inc. All Rights Reserved
 Proprietary and Confidential
 *****************************************/
/**
  @file   rmaac-detector.h
  @brief  
  Simple Interface to an AAC (adif/adts/dsi) detector.

  @author Oriol Prieto Gasco
  @date   2005-03-22
*/

#ifndef __RMAACDETECTOR_H__
#define __RMAACDETECTOR_H__

#include "rmdetector-common.h"
typedef enum {
	AAC_DSI_AUDIO,
	AAC_ADTS_AUDIO,
	AAC_ADIF_AUDIO
} RMaacType;


typedef enum {
	AAC_DSI_RESET = 0,
	AAC_DSI_SKIP_2ND_BYTE,
	AAC_DSI_SKIP_3RD_BYTE,
	AAC_DSI_SKIP_4TH_BYTE,
	AAC_DSI_READ_AOT,
	AAC_DSI_READ_FI,
	AAC_DSI_READ_XFI0,
	AAC_DSI_READ_XFI1,
	AAC_DSI_READ_XFI2,
	AAC_DSI_SKIP_CD0,
	AAC_DSI_SKIP_CD1,
	AAC_DSI_READ_CHANCONF,
	AAC_FOUND_DSI_AUDIO,
	AAC_DSI_DISCARDED

} dsiAACState;

typedef enum {
	AAC_ADIF_SEEK_A = 0,
	AAC_ADIF_SEEK_D,
	AAC_ADIF_SEEK_I,
	AAC_ADIF_SEEK_F,
	AAC_ADIF_READ_CR,
	AAC_ADIF_SKIP_CRI,
	AAC_ADIF_READ_BR0,
	AAC_ADIF_READ_BR1,
	AAC_ADIF_READ_BR2,
	AAC_ADIF_OFF5_READ_SFI,
	AAC_ADIF_OFF5_READ_FCE,
	AAC_ADIF_OFF5_READ_BCE,
	AAC_ADIF_OFF25_READ_SFI,
	AAC_ADIF_OFF25_READ_FCE,
	AAC_ADIF_OFF25_READ_BCE,
	AAC_FOUND_ADIF_AUDIO,
	AAC_ADIF_DISCARDED
} adifAACState;

typedef enum {
	AAC_ADTS_SEEK_SYNC0 = 0,
	AAC_ADTS_SEEK_SYNC1,
	AAC_ADTS_READ_FI,
	AAC_ADTS_READ_CC,
	AAC_FOUND_ADTS_AUDIO,
} adtsAACState;


class RMaacDetector : public RMobject
{
 public:
	RMaacDetector ();
	~RMaacDetector ();

	// Resets the detector to parse a new bitstream.
	void Reset (void);

	RMbool Detect (RMuint8 *pbuffer, RMuint32 size);

	RMstatus GetType(eAudioFormat_type *audioType);
	RMstatus GetParams(RMuint32 *frequency, RMuint32 *channelCount, RMuint32 *bitrate);
	RMstatus GetAudioSpecificInfo(struct RM_Detection_Specific_Info *info);

	RMbool isAAC (RMaacType *aac_type, RMuint32 *frequency, RMuint32 *numberOfChannels);

	RMbool GetDSIParams(RMuint32 *frequency, RMuint32 *numberOfChannels);
	RMbool GetADTSParams(RMuint32 *frequency, RMuint32 *numberOfChannels);
	RMbool GetADIFParams(RMuint32 *frequency, RMuint32 *numberOfChannels);

 private:
	dsiAACState m_dsiAACState;
	RMuint32 m_dsiFrequency;
	RMuint32 m_dsiChannelNo;
	RMuint16 m_dsiAudioObjectType;
	RMuint8  m_dsiFrequencyIndex;
	RMuint8  m_dsiChannelConf;
	RMuint32 m_dsiPacketCount;

	adifAACState m_adifAACState;
	RMuint32 m_adifFrequency;
	RMuint32 m_adifChannelNo;
	RMuint8  m_adifBitstreamType;
	RMuint8  m_adifNumPCEs;
	RMuint8  m_adifSkipCount;
	RMuint8  m_adifFrequencyIndex;
	RMuint8  m_adifFrontChannels;
	RMuint8  m_adifSideChannels;
	RMuint8  m_adifBackChannels;

	adtsAACState m_adtsAACState;
	RMuint8 m_adtsFrequencyIndex;
	RMuint8 m_adtsChannelConf;
	RMuint32 m_adtsPacketCount;
	RMuint32 m_adtsFrequency;
	RMuint32 m_adtsChannelNo;


	RMuint32 m_parsedBytes;
};


#endif // __RMAACDETECTOR_H__