g72x.h File Reference

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Classes
struct	g72x_state
Defines
#define	AUDIO_ENCODING_ULAW   (1)
#define	AUDIO_ENCODING_ALAW   (2)
#define	AUDIO_ENCODING_LINEAR   (3)
Functions
void	g72x_init_state (struct g72x_state *)
int	g721_encoder (int sample, int in_coding, struct g72x_state *state_ptr)
int	g721_decoder (int code, int out_coding, struct g72x_state *state_ptr)
int	g723_24_encoder (int sample, int in_coding, struct g72x_state *state_ptr)
int	g723_24_decoder (int code, int out_coding, struct g72x_state *state_ptr)
int	g723_40_encoder (int sample, int in_coding, struct g72x_state *state_ptr)
int	g723_40_decoder (int code, int out_coding, struct g72x_state *state_ptr)
int	quantize (int d, int y, short *table, int size)
int	reconstruct (int, int, int)
void	update (int code_size, int y, int wi, int fi, int dq, int sr, int dqsez, struct g72x_state *state_ptr)
int	tandem_adjust_alaw (int sr, int se, int y, int i, int sign, short *qtab)
int	tandem_adjust_ulaw (int sr, int se, int y, int i, int sign, short *qtab)
unsigned char	linear2alaw (int pcm_val)
int	alaw2linear (unsigned char a_val)
unsigned char	linear2ulaw (int pcm_val)
int	ulaw2linear (unsigned char u_val)
int	predictor_zero (struct g72x_state *state_ptr)
int	predictor_pole (struct g72x_state *state_ptr)
int	step_size (struct g72x_state *state_ptr)

---

Define Documentation

#define AUDIO_ENCODING_ALAW   (2)

#define AUDIO_ENCODING_LINEAR   (3)

#define AUDIO_ENCODING_ULAW   (1)

---

Function Documentation

int alaw2linear

(

unsigned char

a_val

)

int g721_decoder	(	int	code,
		int	out_coding,
		struct g72x_state *	state_ptr
	)

int g721_encoder	(	int	sample,
		int	in_coding,
		struct g72x_state *	state_ptr
	)

int g723_24_decoder	(	int	code,
		int	out_coding,
		struct g72x_state *	state_ptr
	)

int g723_24_encoder	(	int	sample,
		int	in_coding,
		struct g72x_state *	state_ptr
	)

int g723_40_decoder	(	int	code,
		int	out_coding,
		struct g72x_state *	state_ptr
	)

int g723_40_encoder	(	int	sample,
		int	in_coding,
		struct g72x_state *	state_ptr
	)

void g72x_init_state

(

struct g72x_state *

)

unsigned char linear2alaw

(

int

pcm_val

)

unsigned char linear2ulaw

(

int

pcm_val

)

int predictor_pole

(

struct g72x_state *

state_ptr

)

int predictor_zero

(

struct g72x_state *

state_ptr

)

int quantize	(	int	d,
		int	y,
		short *	table,
		int	size
	)

int reconstruct	(	int	,
		int	,
		int
	)

int step_size

(

struct g72x_state *

state_ptr

)

int tandem_adjust_alaw	(	int	sr,
		int	se,
		int	y,
		int	i,
		int	sign,
		short *	qtab
	)

int tandem_adjust_ulaw	(	int	sr,
		int	se,
		int	y,
		int	i,
		int	sign,
		short *	qtab
	)

int ulaw2linear

(

unsigned char

u_val

)

void update	(	int	code_size,
		int	y,
		int	wi,
		int	fi,
		int	dq,
		int	sr,
		int	dqsez,
		struct g72x_state *	state_ptr
	)