#define         BS_FORMAT       ASCII /* BINARY or ASCII = 2x bytes */#endif#define         BUFFER_SIZE     4096#define         MIN(A, B)       ((A) < (B) ? (A) : (B))#define         MAX(A, B)       ((A) > (B) ? (A) : (B))/*************************************************************************  Global Type Definitions************************************************************************//* Structure for Reading Layer II Allocation Tables from File */typedef struct {    unsigned int    steps;    unsigned int    bits;    unsigned int    group;    unsigned int    quant;} sb_alloc, *alloc_ptr;typedef sb_alloc        al_table[SBLIMIT][16];/* Header Information Structure */typedef struct {    int version;    int lay;    int error_protection;    int bitrate_index;    int sampling_frequency;    int padding;    int extension;    int mode;    int mode_ext;    int copyright;    int original;    int emphasis;} layer, *the_layer;/* Parent Structure Interpreting some Frame Parameters in Header */typedef struct {    layer       *header;        /* raw header information */    int         actual_mode;    /* when writing IS, may forget if 0 chs */    al_table    *alloc;         /* bit allocation table read in */    int         tab_num;        /* number of table as loaded */    int         stereo;         /* 1 for mono, 2 for stereo */    int         jsbound;        /* first band of joint stereo coding */    int         sblimit;        /* total number of sub bands */} frame_params;/* AIFF Definitions */#define IFF_ID_FORM 0x464f524d /* "FORM" */#define IFF_ID_AIFF 0x41494646 /* "AIFF" */#define IFF_ID_COMM 0x434f4d4d /* "COMM" */#define IFF_ID_SSND 0x53534e44 /* "SSND" */#define IFF_ID_MPEG 0x4d504547 /* "MPEG" */#define AIFF_FORM_HEADER_SIZE 12#define AIFF_SSND_HEADER_SIZE 16typedef struct  blockAlign_struct {    unsigned long   offset;    unsigned long   blockSize;} blockAlign;typedef struct  IFF_AIFF_struct {    short           numChannels;    unsigned long   numSampleFrames;    short           sampleSize;    double          sampleRate;    unsigned long   sampleType;    blockAlign      blkAlgn;} IFF_AIFF;enum byte_order { order_unknown, order_bigEndian, order_littleEndian };extern enum byte_order NativeByteOrder;/* "bit_stream.h" Type Definitions */typedef struct  bit_stream_struc {    FILE        *pt;            /* pointer to bit stream device */    unsigned char *buf;         /* bit stream buffer */    int         buf_size;       /* size of buffer (in number of bytes) */    long        totbit;         /* bit counter of bit stream */    int         buf_byte_idx;   /* pointer to top byte in buffer */    int         buf_bit_idx;    /* pointer to top bit of top byte in buffer */    int         mode;           /* bit stream open in read or write mode */    int         eob;            /* end of buffer index */    int         eobs;           /* end of bit stream flag */    char        format;        /* format of file in rd mode (BINARY/ASCII) */} Bit_stream_struc;#include "l3side.h"/*************************************************************************  Global Variable External Declarations************************************************************************/extern char     *mode_names[4];extern char     *layer_names[3];extern char	*version_names[2];extern double   s_freq[2][4];extern int      bitrate[2][3][15];extern double FAR multiple[64];/*************************************************************************  Global Function Prototype Declarations************************************************************************//* The following functions are in the file "common.c" */#ifdef  PROTO_ARGSextern FILE           *OpenTableFile(char*);extern int            read_bit_alloc(int, al_table*);extern int            pick_table(frame_params*);extern int            js_bound(int, int);extern void           hdr_to_frps(frame_params*);extern void           WriteHdr(frame_params*, FILE*);extern void           WriteBitAlloc(unsigned int[2][SBLIMIT], frame_params*,                        FILE*);extern void           WriteScale(unsigned int[2][SBLIMIT],                        unsigned int[2][SBLIMIT], unsigned int[2][3][SBLIMIT],                        frame_params*, FILE*);extern void           WriteSamples(int, unsigned int FAR [SBLIMIT],                        unsigned int[SBLIMIT], frame_params*, FILE*);extern int            NumericQ(char*);extern int            BitrateIndex(int, int, int);extern int            SmpFrqIndex(long, int*);extern int            memcheck(char*, int, int);extern void           FAR *mem_alloc(unsigned long, char*);extern void           mem_free(void**);extern void           double_to_extended(double*, char[10]);extern void           extended_to_double(char[10], double*);extern int            aiff_read_headers(FILE*, IFF_AIFF*);extern int            aiff_seek_to_sound_data(FILE*);extern int            aiff_write_headers(FILE*, IFF_AIFF*);extern int            refill_buffer(Bit_stream_struc*);extern void           empty_buffer(Bit_stream_struc*, int);extern void           open_bit_stream_w(Bit_stream_struc*, char*, int);extern void           open_bit_stream_r(Bit_stream_struc*, char*, int);extern void           close_bit_stream_r(Bit_stream_struc*);extern void           close_bit_stream_w(Bit_stream_struc*);extern void           alloc_buffer(Bit_stream_struc*, int);extern void           desalloc_buffer(Bit_stream_struc*);extern void           back_track_buffer(Bit_stream_struc*, int);extern unsigned int   get1bit(Bit_stream_struc*);extern void           put1bit(Bit_stream_struc*, int);extern unsigned long  look_ahead(Bit_stream_struc*, int);extern unsigned long  getbits(Bit_stream_struc*, int);extern void           putbits(Bit_stream_struc*, unsigned int, int);extern void           byte_ali_putbits(Bit_stream_struc*, unsigned int, int);extern unsigned long  byte_ali_getbits(Bit_stream_struc*, int);extern unsigned long  sstell(Bit_stream_struc*);extern int            end_bs(Bit_stream_struc*);extern int            seek_sync(Bit_stream_struc*, long, int);extern void           I_CRC_calc(frame_params*, unsigned int[2][SBLIMIT],                        unsigned int*);extern void           II_CRC_calc(frame_params*, unsigned int[2][SBLIMIT],                        unsigned int[2][SBLIMIT], unsigned int*);extern void           update_CRC(unsigned int, unsigned int, unsigned int*);extern void           read_absthr(FLOAT*, int);extern unsigned int   hget1bit(); /* MI */extern unsigned long  hgetbits(int);extern unsigned long  hsstell();extern void           hputbuf(unsigned int,int);extern enum byte_order DetermineByteOrder();extern void SwapBytesInWords( short *loc, int words );#ifdef  MACINTOSHextern void           set_mac_file_attr(char[MAX_NAME_SIZE], short, OSType,                        OSType);#endif#ifdef MS_DOSextern void           new_ext(char *filename, char *extname, char *newname); #endif#elseextern FILE           *OpenTableFile();extern int            read_bit_alloc();extern int            pick_table();extern int            js_bound();extern void           hdr_to_frps();extern void           WriteHdr();extern void           WriteBitAlloc();extern void           WriteScale();extern void           WriteSamples();extern int            NumericQ();extern int            BitrateIndex();extern int            SmpFrqIndex();extern int            memcheck();extern void           FAR *mem_alloc();extern void           mem_free();extern void           double_to_extended();extern void           extended_to_double();extern int            aiff_read_headers();extern int            aiff_seek_to_sound_data();extern int            aiff_write_headers();extern int            refill_buffer();extern void           empty_buffer();extern void           open_bit_stream_w();extern void           open_bit_stream_r();extern void           close_bit_stream_r();extern void           close_bit_stream_w();extern void           alloc_buffer();extern void           desalloc_buffer();extern void           back_track_buffer();extern unsigned int   get1bit();extern void           put1bit();extern unsigned long  look_ahead();extern unsigned long  getbits();extern void           putbits();extern void           byte_ali_putbits();extern unsigned long  byte_ali_getbits();extern unsigned long  sstell();extern int            end_bs();extern int            seek_sync();extern void           I_CRC_calc();extern void           II_CRC_calc();extern void           update_CRC();extern void           read_absthr();extern unsigned int   hget1bit();extern unsigned long  hgetbits();extern unsigned long  hsstell();extern void           hputbuf();#ifdef MS_DOSextern void           new_ext(); #endif#endif#endif