tccxxx_aacdec.h

自己在wince的环境下做的一移动数字电视驱动

/**************************************************************************************
 * EAAC+ decoder
 *
 * aacdec.h - public C API for AAC decoder
 **************************************************************************************/

#ifndef _AACDEC_H
#define _AACDEC_H

//#define ENABLE_FILE_PLAY // WINCE NOT USED
#ifdef ENABLE_FILE_PLAY
//#include "selfifc.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif

#ifndef NULL
#define NULL    0
#endif

/* according to spec (13818-7 section 8.2.2, 14496-3 section 4.5.3)
 * max size of input buffer = 
 *    6144 bits =  768 bytes per SCE or CCE-I
 *   12288 bits = 1536 bytes per CPE
 *       0 bits =    0 bytes per CCE-D (uses bits from the SCE/CPE/CCE-I it is coupled to)
 */
#ifndef AAC_MAX_NCHANS				/* if max channels isn't set in makefile, */
#define AAC_MAX_NCHANS		2		/* set to default max number of channels  */
#endif
#define AAC_MAX_NSAMPS		1024
#define AAC_MAINBUF_SIZE	(768 * AAC_MAX_NCHANS)

#define	AAC_SUPPORT_LD

#define AAC_NUM_PROFILES	3
#define AAC_PROFILE_MP		0
#define AAC_PROFILE_LC		1
#define AAC_PROFILE_SSR		2
#define AAC_PROFILE_LD		21
#define AAC_PROFILE_LTP     3	// V207

#define AAC_TRANSFORM_LENGTH_1024
#define AAC_TRANSFORM_LENGTH_960

enum {
	ERR_AAC_NONE                          =   0,
	ERR_AAC_INDATA_UNDERFLOW              =  -1,
	ERR_AAC_NULL_POINTER                  =  -2,
	ERR_AAC_INVALID_ADTS_HEADER           =  -3,
	ERR_AAC_INVALID_ADIF_HEADER           =  -4,
	ERR_AAC_INVALID_FRAME                 =  -5,
	ERR_AAC_MPEG4_UNSUPPORTED             =  -6,
	ERR_AAC_CHANNEL_MAP                   =  -7,
	ERR_AAC_SYNTAX_ELEMENT                =  -8,

	ERR_AAC_DEQUANT                       =  -9,
	ERR_AAC_STEREO_PROCESS                = -10,
	ERR_AAC_PNS                           = -11,
	ERR_AAC_SHORT_BLOCK_DEINT             = -12,
	ERR_AAC_TNS                           = -13,
	ERR_AAC_IMDCT                         = -14,
	ERR_AAC_NCHANS_TOO_HIGH               = -15,

	ERR_AAC_SBR_INIT                      = -16,
	ERR_AAC_SBR_BITSTREAM                 = -17,
	ERR_AAC_SBR_DATA                      = -18,
	ERR_AAC_SBR_PCM_FORMAT                = -19,
	ERR_AAC_SBR_NCHANS_TOO_HIGH           = -20,
	ERR_AAC_SBR_SINGLERATE_UNSUPPORTED    = -21,

	ERR_AAC_RAWBLOCK_PARAMS               = -22,


	ERR_AAC_PS_INIT                      = -23,
	ERR_AAC_SECTION_READ                 = -24,
	
	ERR_AAC_HUFFMAN_SPEC				 = -25,	//JR-KIM 2007.10.16, (Added)
	
	ERR_AAC_CANNOT_DECODE_THIS_PROFILE   = -26,	// V207
	
	ERR_UNKNOWN               = -9999
};

typedef struct _AACFrameInfo {
	int bitRate;
	int nChans;
	int sampRateCore;
	int sampRateOut;
	int bitsPerSample;
	int outputSamps;		
	int profile;
	int tnsUsed;
	int pnsUsed;
	int format;				//GYkim 2007.07.10
	int total_play_time;	//GYkim 2007.07.12
	int atom_meta_ofst;		//GYkim 2007.07.12
	int	file_size;			//GYkim 2007.07.12	
	int nDSE_data_count;	//GYkim 2007.09.10	
	unsigned char	*pDSE_data_buff;//GYkim 2007.09.10	
	int TransformLength;		//JR-KIM 2007.10.23
	int nDSE_curr_instTag;	//JR-KIM 2007.11.27
} AACFrameInfo;

/* AAC file format */

typedef void *HAACDecoder;

#if 0 // WINCE NOT USED
//NEW_VER_START  
#define AAC_MAX_PCM_LENGTH 1024

#define SEEK_SET 0 /* start of stream (see fseek) */
#define SEEK_CUR 1 /* current position in stream (see fseek) */
#define SEEK_END 2 /* end of stream (see fseek) */

#define FILE_CHUNK_NUM  10

#define MP4_LIB

// New Structures and defines.
#define READBUF_SIZE	(2 * AAC_MAINBUF_SIZE * AAC_MAX_NCHANS)	/* pick something big enough to hold a bunch of frames */

enum {
	AAC_FF_Unknown = 0,		/* should be 0 on init */
	AAC_FF_ADTS = 1,
	AAC_FF_ADIF = 2,
	AAC_FF_MP4 = 3,//GYkim 2007.07.10
	AAC_FF_RAW =  4

};

#define		PCM_BUFF_NUM	1
#define		STCO_BFSZ	10*1024
#define		MAX_ADTS_SCAN_NUM 512
#define		TEST_ADTS_SCAN_NUM 512

#ifdef ENABLE_FILE_PLAY
unsigned int  STCO_buffer[STCO_BFSZ];
extern unsigned int *gEAACp_stco_buffer;
extern unsigned int gEAACp_stco_buffer_sz;
#endif
#else
#define		PCM_BUFF_NUM	1
#endif
 
typedef struct _CodecOpen_data {
	HAACDecoder		hAACDecoder;
	AACFrameInfo	*haacFrameInfo;
	void			*inFile;
#ifdef ENABLE_FILE_PLAY	
	SFWrapper		*hMP4FF_transport;
#endif	
	int				nFrameCount;
	unsigned char	*readBuf;
	unsigned char	*readPtr;
	int				bytesLeft;
	unsigned long   id3tag_size_offst;//JR-KIM 2007.10.16, (Added)
	unsigned long   avg_length_frame; //JR-KIM 2007.10.16, (Added)
} CodecOpenData;

#if 0 // WINCE NOT USED
typedef struct
{	
	HAACDecoder 	*hAACDecoder;
	CodecOpenData	stCodecOpendata;
#ifdef ENABLE_FILE_PLAY	
	SFWrapper		MP4FF_transport;
#endif	
	AACFrameInfo 	aacFrameInfo;

	int				bytesLeft;
	unsigned char 	*readPtr;
	int				eofReached;	

	char 			pcEncodedData[READBUF_SIZE];

	short 			psLeft[2048*PCM_BUFF_NUM+1024]; 
	short 			psRight[2048*PCM_BUFF_NUM+1024];

	//BufferState 	*pOutput; 
	void			*pOutput;
	int				buffer_ptr[2];

	unsigned short 	usValid;

	unsigned int 	usSampleRate;

	unsigned char 	ucChannels;

	unsigned char 	ucIsVBR;

	unsigned long 	ulFirstFrame;

	unsigned long 	ulLength;

	unsigned long 	ulTimeLength;

	unsigned long	ulBitRate;

	unsigned long 	ulTimePos;
	
} tAAC;
#endif

/* public C API */
HAACDecoder EAACPlus_Get_Instance(void);
void AACFreeDecoder(HAACDecoder hAACDecoder);
int AACDecode_parsing(HAACDecoder hAACDecoder, unsigned char **inbuf, int *bytesLeft);
int AACDecode(HAACDecoder hAACDecoder, unsigned char **inbuf, int *bytesLeft, short *ch_L, short *ch_R);

int AACFindSyncWord(unsigned char *buf, int nBytes);
void AACGetLastFrameInfo(HAACDecoder hAACDecoder, AACFrameInfo *aacFrameInfo);
int AACSetRawBlockParams(HAACDecoder hAACDecoder, int copyLast, AACFrameInfo *aacFrameInfo);
int AACFlushCodec(HAACDecoder hAACDecoder);
int EAACPlusCodecSeek(HAACDecoder hAACDecoder, unsigned int frm_cnt); //JR-KIM 2007.10.16, (Added)

unsigned int EAACPlus_Get_Instance_Size(void);
HAACDecoder EAACPlus_Create(void *instance);

int EAACPlusCodecSetTrasformLength(HAACDecoder hAACDecoder, AACFrameInfo *aacFrameInfo); //JR-KIM 2007.11.08, (Added)

#define EAACPlusCodecGetInstance EAACPlus_Get_Instance
#define EAACPlusCodecDecode AACDecode
#define EAACPlusCodecParsing AACDecode_parsing
#define EAACPlusCodecSetRawBlockParams AACSetRawBlockParams
#define EAACPlusCodecGetLastFrameInfo AACGetLastFrameInfo

#ifdef __cplusplus
}
#endif

#endif	/* _AACDEC_H */