isdn_audio.h File Reference

Go to the source code of this file.

Data Structures
struct	adpcm_state
struct	dtmf_state
struct	silence_state

Macros
#define	DTMF_NPOINTS   205 /* Number of samples for DTMF recognition */

Typedefs
typedef struct adpcm_state	adpcm_state
typedef struct dtmf_state	dtmf_state
typedef struct silence_state	silence_state

Functions
void	isdn_audio_ulaw2alaw (unsigned char *, unsigned long)
void	isdn_audio_alaw2ulaw (unsigned char *, unsigned long)
adpcm_state *	isdn_audio_adpcm_init (adpcm_state *, int)
int	isdn_audio_adpcm2xlaw (adpcm_state *, int, unsigned char *, unsigned char *, int)
int	isdn_audio_xlaw2adpcm (adpcm_state *, int, unsigned char *, unsigned char *, int)
void	isdn_audio_calc_dtmf (modem_info *, unsigned char *, int, int)
void	isdn_audio_eval_dtmf (modem_info *)
dtmf_state *	isdn_audio_dtmf_init (dtmf_state *)
void	isdn_audio_calc_silence (modem_info *, unsigned char *, int, int)
void	isdn_audio_eval_silence (modem_info *)
silence_state *	isdn_audio_silence_init (silence_state *)
void	isdn_audio_put_dle_code (modem_info *, u_char)

Macro Definition Documentation

#define DTMF_NPOINTS   205 /* Number of samples for DTMF recognition */

Definition at line 12 of file isdn_audio.h.

Typedef Documentation

typedef struct adpcm_state adpcm_state

typedef struct dtmf_state dtmf_state

typedef struct silence_state silence_state

Function Documentation

int isdn_audio_adpcm2xlaw	(	adpcm_state *	,
		int	,
		unsigned char *	,
		unsigned char *	,
		int
	)

Definition at line 361 of file isdn_audio.c.

adpcm_state* isdn_audio_adpcm_init	(	adpcm_state *	,
		int
	)

Definition at line 329 of file isdn_audio.c.

void isdn_audio_alaw2ulaw	(	unsigned char *	,
		unsigned	long
	)

Definition at line 223 of file isdn_audio.c.

void isdn_audio_calc_dtmf	(	modem_info *	,
		unsigned char *	,
		int	,
		int
	)

Definition at line 593 of file isdn_audio.c.

void isdn_audio_calc_silence	(	modem_info *	,
		unsigned char *	,
		int	,
		int
	)

Definition at line 634 of file isdn_audio.c.

dtmf_state* isdn_audio_dtmf_init

(

dtmf_state *

)

Definition at line 344 of file isdn_audio.c.

void isdn_audio_eval_dtmf

(

modem_info *

)

Definition at line 495 of file isdn_audio.c.

void isdn_audio_eval_silence

(

modem_info *

)

Definition at line 691 of file isdn_audio.c.

void isdn_audio_put_dle_code	(	modem_info *	,
		u_char
	)

Definition at line 661 of file isdn_audio.c.

silence_state* isdn_audio_silence_init

(

silence_state *

)

Definition at line 622 of file isdn_audio.c.

void isdn_audio_ulaw2alaw	(	unsigned char *	,
		unsigned	long
	)

Definition at line 217 of file isdn_audio.c.

int isdn_audio_xlaw2adpcm	(	adpcm_state *	,
		int	,
		unsigned char *	,
		unsigned char *	,
		int
	)

Definition at line 396 of file isdn_audio.c.