capidtmf.h File Reference

Go to the source code of this file.

Data Structures
struct	tag_capidtmf_recv_state
struct	tag_capidtmf_state

Macros
#define	CAPIDTMF_TONE_GROUP_COUNT   2
#define	CAPIDTMF_LOW_GROUP_FREQUENCIES   4
#define	CAPIDTMF_HIGH_GROUP_FREQUENCIES   4
#define	DSPDTMF_RX_SENSITIVITY_LOW_DEFAULT   50 /* -52 dBm */
#define	DSPDTMF_RX_SENSITIVITY_HIGH_DEFAULT   50 /* -52 dBm */
#define	DSPDTMF_RX_HIGH_EXCEEDING_LOW_DEFAULT   10 /* dB */
#define	DSPDTMF_RX_LOW_EXCEEDING_HIGH_DEFAULT   10 /* dB */
#define	DSPDTMF_RX_HARMONICS_SEL_DEFAULT   12 /* dB */
#define	CAPIDTMF_RECV_BASE_FREQUENCY_COUNT   (CAPIDTMF_LOW_GROUP_FREQUENCIES + CAPIDTMF_HIGH_GROUP_FREQUENCIES)
#define	CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT   8
#define	CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT   (CAPIDTMF_RECV_BASE_FREQUENCY_COUNT + CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT)
#define	CAPIDTMF_RECV_POSITIVE_COEFF_COUNT   16
#define	CAPIDTMF_RECV_NEGATIVE_COEFF_COUNT   (CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT - CAPIDTMF_RECV_POSITIVE_COEFF_COUNT)
#define	CAPIDTMF_RECV_ACCUMULATE_CYCLES   205
#define	CAPIDTMF_RECV_FUNDAMENTAL_OFFSET   (0xff35L * 2)
#define	CAPIDTMF_RECV_FUNDAMENTAL_DECREMENT   (0x0028L * 2)
#define	CAPIDTMF_RECV_DIGIT_BUFFER_SIZE   32
#define	CAPIDTMF_RECV_STATE_IDLE   0x00
#define	CAPIDTMF_RECV_STATE_DTMF_ACTIVE   0x01
#define	capidtmf_indication(p_state, buffer)   (((p_state)->recv.indication_state != (p_state)->recv.indication_state_ack) ? capidtmf_recv_indication(p_state, buffer) : 0)
#define	capidtmf_recv_process_block(p_state, buffer, length)   { if ((p_state)->recv.state != CAPIDTMF_RECV_STATE_IDLE) capidtmf_recv_block(p_state, buffer, length); }

Typedefs
typedef struct tag_capidtmf_recv_state	t_capidtmf_recv_state
typedef struct tag_capidtmf_state	t_capidtmf_state

Functions
word	capidtmf_recv_indication (t_capidtmf_state *p_state, byte *buffer)
void	capidtmf_recv_block (t_capidtmf_state *p_state, byte *buffer, word length)
void	capidtmf_init (t_capidtmf_state *p_state, byte ulaw)
void	capidtmf_recv_enable (t_capidtmf_state *p_state, word min_digit_duration, word min_gap_duration)
void	capidtmf_recv_disable (t_capidtmf_state *p_state)

Macro Definition Documentation

#define CAPIDTMF_HIGH_GROUP_FREQUENCIES   4

Definition at line 32 of file capidtmf.h.

#define capidtmf_indication	(		p_state,
			buffer
	)		(((p_state)->recv.indication_state != (p_state)->recv.indication_state_ack) ? capidtmf_recv_indication(p_state, buffer) : 0)

Definition at line 75 of file capidtmf.h.

#define CAPIDTMF_LOW_GROUP_FREQUENCIES   4

Definition at line 31 of file capidtmf.h.

#define CAPIDTMF_RECV_ACCUMULATE_CYCLES   205

Definition at line 43 of file capidtmf.h.

#define CAPIDTMF_RECV_BASE_FREQUENCY_COUNT   (CAPIDTMF_LOW_GROUP_FREQUENCIES + CAPIDTMF_HIGH_GROUP_FREQUENCIES)

Definition at line 38 of file capidtmf.h.

#define CAPIDTMF_RECV_DIGIT_BUFFER_SIZE   32

Definition at line 46 of file capidtmf.h.

#define CAPIDTMF_RECV_FUNDAMENTAL_DECREMENT   (0x0028L * 2)

Definition at line 45 of file capidtmf.h.

#define CAPIDTMF_RECV_FUNDAMENTAL_OFFSET   (0xff35L * 2)

Definition at line 44 of file capidtmf.h.

#define CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT   8

Definition at line 39 of file capidtmf.h.

#define CAPIDTMF_RECV_NEGATIVE_COEFF_COUNT   (CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT - CAPIDTMF_RECV_POSITIVE_COEFF_COUNT)

Definition at line 42 of file capidtmf.h.

#define CAPIDTMF_RECV_POSITIVE_COEFF_COUNT   16

Definition at line 41 of file capidtmf.h.

#define capidtmf_recv_process_block	(		p_state,
			buffer,
			length
	)		{ if ((p_state)->recv.state != CAPIDTMF_RECV_STATE_IDLE) capidtmf_recv_block(p_state, buffer, length); }

Definition at line 76 of file capidtmf.h.

#define CAPIDTMF_RECV_STATE_DTMF_ACTIVE   0x01

Definition at line 48 of file capidtmf.h.

#define CAPIDTMF_RECV_STATE_IDLE   0x00

Definition at line 47 of file capidtmf.h.

#define CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT   (CAPIDTMF_RECV_BASE_FREQUENCY_COUNT + CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT)

Definition at line 40 of file capidtmf.h.

#define CAPIDTMF_TONE_GROUP_COUNT   2

Definition at line 30 of file capidtmf.h.

#define DSPDTMF_RX_HARMONICS_SEL_DEFAULT   12 /* dB */

Definition at line 37 of file capidtmf.h.

#define DSPDTMF_RX_HIGH_EXCEEDING_LOW_DEFAULT   10 /* dB */

Definition at line 35 of file capidtmf.h.

#define DSPDTMF_RX_LOW_EXCEEDING_HIGH_DEFAULT   10 /* dB */

Definition at line 36 of file capidtmf.h.

#define DSPDTMF_RX_SENSITIVITY_HIGH_DEFAULT   50 /* -52 dBm */

Definition at line 34 of file capidtmf.h.

#define DSPDTMF_RX_SENSITIVITY_LOW_DEFAULT   50 /* -52 dBm */

Definition at line 33 of file capidtmf.h.

Typedef Documentation

typedef struct tag_capidtmf_recv_state t_capidtmf_recv_state

typedef struct tag_capidtmf_state t_capidtmf_state

Function Documentation

void capidtmf_init	(	t_capidtmf_state *	p_state,
		byte	ulaw
	)

Definition at line 678 of file capidtmf.c.

void capidtmf_recv_block	(	t_capidtmf_state *	p_state,
		byte *	buffer,
		word	length
	)

Definition at line 490 of file capidtmf.c.

void capidtmf_recv_disable

(

t_capidtmf_state *

p_state

)

Definition at line 449 of file capidtmf.c.

void capidtmf_recv_enable	(	t_capidtmf_state *	p_state,
		word	min_digit_duration,
		word	min_gap_duration
	)

Definition at line 430 of file capidtmf.c.

word capidtmf_recv_indication	(	t_capidtmf_state *	p_state,
		byte *	buffer
	)

Definition at line 464 of file capidtmf.c.