/**************************************************************************
*
*	FILENAME				:	const.tab
*
*	DESCRIPTION			:	Constants for speech channel coding and decoding
*
**************************************************************************/

/* CONSTANTS FOR CONVOLUTIONAL CODING */
#define	K				5 /* Constraint Length */
#define	Nber_bits_quantif		8 /* Quantization */
#define	Decoding_delay		30 /* Decoding Delay */
/* Polynomial generators : these polynomials should be under the format
1+...+X**4 to match the decoding procedure : */
#define	G1				0x01F /* First Polynomial */
#define	G2				0x01B /* Second Polynomial */
#define	G3				0x015 /* Third Polynomial */

/* FRAME FORMAT : */
/* Size of the three sensitivity classes  */
/* these sizes correspond to the coding of two speech frames at a time */
/*                                         ---                         */
#define	N0		51 /* One Frame : Less sensitive class (class 0) */
#define	N1		56 /* One Frame : Moderate sensitive (class 1) */
#define	N2		30 /* One Frame : Most sensitive (class2) */
#define	N0_2		102 /* Two Frames : Less sensitive class (class 0) */
#define	N1_2		112 /* Two Frames : Moderate sensitive (class 1) */
#define	N2_2		60 /* Two Frames : Most sensitive (class 2) */
#define	N1_2_coded	168 /* Two Frames after coding : size of class 1 after coding */
#define	N2_2_coded	162 /* Two Frames after coding : size of class 2 after coding including CRC bits, (K-1) bits to empty the encoder */
/* N0_2 + N1_2_coded + N2_2_coded	=	size of a coded frame (60 ms  at 7200b/s)
						=	432
						=	Long_time_slot */

#define	Length_vocoder_frame	137 /* 30 ms speech frame at 4567 b/s */
#define	Length_2_frames		274 /* Two 30 ms speech frames */
#define	Length_time_slot		432 /* 60 ms frame at 7200 b/s */

/* PUNCTURING CHARACTERISTICS: */
#define	Period_pct			8 /* Puncturing Period */
#define	Ai_j_SIZE		Period_pct*6 /* Size of Puncturing Arrays */

/* BAD FRAME INDICATOR: CRC */
#define	SIZE_CRC			8 /* Number of bits of the CRC (Cyclic Redundant Check) */
#define	Fs_SIZE_CRC			4 /* Number of bits of the CRC (Frame Stealing Active) */

#define	SIZE_TAB_CRC1		29	/* Amount of bits taken into account */
#define	SIZE_TAB_CRC2		29	/* In every of the 8 CRC bits */
#define	SIZE_TAB_CRC3		29
#define	SIZE_TAB_CRC4		30
#define	SIZE_TAB_CRC5		30
#define	SIZE_TAB_CRC6		29
#define	SIZE_TAB_CRC7		29
#define	SIZE_TAB_CRC8		35

/* CONSTANTS FOR MATRIX INTERLEAVING */
#define	LINES				24
#define	COLUMNS			18
/* LINES * COLUMNS = Length_time_slot  = 432 */