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#ifndef COMMON_DOT_H
#define COMMON_DOT_H
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#endif
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif
#define FLOAT float
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#define NULL_CHAR '\0'
#define MAX_U_32_NUM 0xFFFFFFFF
#ifndef PI
#define PI 3.14159265358979
#endif
#define PI2 PI/2
#define PI4 PI/4
#define PI64 PI/64
#define LN_TO_LOG10 0.2302585093
#define VOL_REF_NUM 0
#define MPEG_AUDIO_ID 1
#define MPEG_PHASE2_LSF 0 /* 1995-07-11 SHN */
#define MAC_WINDOW_SIZE 24
#define MONO 1
#define STEREO 2
#define BITS_IN_A_BYTE 8
#define WORD 16
#define MAX_NAME_SIZE 255
#define SBLIMIT 32
#define SSLIMIT 18
#define FFT_SIZE 1024
#define HAN_SIZE 512
#define SCALE_BLOCK 12
#define SCALE_RANGE 64
#define SCALE 32768
#define CRC16_POLYNOMIAL 0x8005
#define CRC8_POLYNOMIAL 0x1D
/* MPEG Header Definitions - Mode Values */
#define MPG_MD_STEREO 0
#define MPG_MD_JOINT_STEREO 1
#define MPG_MD_DUAL_CHANNEL 2
#define MPG_MD_MONO 3
/* Mode Extension */
#define MPG_MD_LR_LR 0
#define MPG_MD_LR_I 1
#define MPG_MD_MS_LR 2
#define MPG_MD_MS_I 3
/* "bit_stream.h" Definitions */
#define MINIMUM 4 /* Minimum size of the buffer in bytes */
#define MAX_LENGTH 32 /* Maximum length of word written or
read from bit stream */
#define READ_MODE 0
#define WRITE_MODE 1
#define ALIGNING 8
#define BINARY 0
#define ASCII 1
#define BUFFER_SIZE 4096
#define FLOAT8 float
#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 dab_extension;
int dab_length;
int bitrate_index;
int sampling_frequency;
int padding;
int extension;
int mode;
int mode_ext;
int copyright;
int original;
int emphasis;
}
frame_header;
/* Parent Structure Interpreting some Frame Parameters in Header */
typedef struct
{
frame_header *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 nch; /* num channels: 1 for mono, 2 for stereo */
int jsbound; /* first band of joint stereo coding */
int sblimit; /* total number of sub bands */
}
frame_info;
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;
enum byte_order
{ order_unknown, order_bigEndian, order_littleEndian };
extern enum byte_order NativeByteOrder;
/* "bit_stream.h" Type Definitions */
/***********************************************************************
*
* Global Variable External Declarations
*
***********************************************************************/
extern char *mode_names[4];
extern char *version_names[2];
extern double s_freq[2][4];
extern int bitrate[2][15];
extern double multiple[64];
int js_bound (int);
void hdr_to_frps (frame_info *);
int BitrateIndex (int, int);
int SmpFrqIndex (long, int *);
void new_ext (char *filename, char *extname, char *newname);
#endif
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