spandsp 3.0.0
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Go to the source code of this file.
Macros | |
#define | MODEM_CONNECT_TONES_FAX_CED MODEM_CONNECT_TONES_ANS |
FAX CED tone is the same as ANS tone. | |
Typedefs | |
typedef struct modem_connect_tones_tx_state_s | modem_connect_tones_tx_state_t |
typedef struct modem_connect_tones_rx_state_s | modem_connect_tones_rx_state_t |
Enumerations | |
enum | { MODEM_CONNECT_TONES_NONE = 0 , MODEM_CONNECT_TONES_FAX_CNG = 1 , MODEM_CONNECT_TONES_ANS = 2 , MODEM_CONNECT_TONES_ANS_PR = 3 , MODEM_CONNECT_TONES_ANSAM = 4 , MODEM_CONNECT_TONES_ANSAM_PR = 5 , MODEM_CONNECT_TONES_FAX_PREAMBLE = 6 , MODEM_CONNECT_TONES_FAX_CED_OR_PREAMBLE = 7 , MODEM_CONNECT_TONES_BELL_ANS = 8 , MODEM_CONNECT_TONES_CALLING_TONE = 9 } |
Functions | |
modem_connect_tones_tx_state_t * | modem_connect_tones_tx_init (modem_connect_tones_tx_state_t *s, int tone_type) |
Initialise an instance of the modem connect tones generator. More... | |
int | modem_connect_tones_tx_release (modem_connect_tones_tx_state_t *s) |
Release an instance of the modem connect tones generator. More... | |
int | modem_connect_tones_tx_free (modem_connect_tones_tx_state_t *s) |
Free an instance of the modem connect tones generator. More... | |
int | modem_connect_tones_tx (modem_connect_tones_tx_state_t *s, int16_t amp[], int len) |
Generate a block of modem connect tones samples. More... | |
int | modem_connect_tones_rx (modem_connect_tones_rx_state_t *s, const int16_t amp[], int len) |
Process a block of samples through an instance of the modem connect tones detector. More... | |
int | modem_connect_tones_rx_fillin (modem_connect_tones_rx_state_t *s, int len) |
Fake processing of a missing block of received modem connect tone samples. More... | |
int | modem_connect_tones_rx_get (modem_connect_tones_rx_state_t *s) |
Test if a modem_connect tone has been detected. More... | |
modem_connect_tones_rx_state_t * | modem_connect_tones_rx_init (modem_connect_tones_rx_state_t *s, int tone_type, tone_report_func_t tone_callback, void *user_data) |
Initialise an instance of the modem connect tones detector. More... | |
int | modem_connect_tones_rx_release (modem_connect_tones_rx_state_t *s) |
Release an instance of the modem connect tones detector. More... | |
int | modem_connect_tones_rx_free (modem_connect_tones_rx_state_t *s) |
Free an instance of the modem connect tones detector. More... | |
const char * | modem_connect_tone_to_str (int tone) |
typedef struct modem_connect_tones_rx_state_s modem_connect_tones_rx_state_t |
Modem connect tones receiver descriptor. This defines the state of a single working instance of the tone detector.
typedef struct modem_connect_tones_tx_state_s modem_connect_tones_tx_state_t |
Modem connect tones generator descriptor. This defines the state of a single working instance of the tone generator.
anonymous enum |
int modem_connect_tones_rx | ( | modem_connect_tones_rx_state_t * | s, |
const int16_t | amp[], | ||
int | len | ||
) |
Process a block of samples through an instance of the modem connect tones detector.
s | The context. |
amp | An array of signal samples. |
len | The number of samples in the array. |
int modem_connect_tones_rx_fillin | ( | modem_connect_tones_rx_state_t * | s, |
int | len | ||
) |
Fake processing of a missing block of received modem connect tone samples.
Fake processing of a missing block of received modem connect tone samples (e.g due to packet loss).
s | The context. |
len | The number of samples to fake. |
int modem_connect_tones_rx_free | ( | modem_connect_tones_rx_state_t * | s | ) |
Free an instance of the modem connect tones detector.
s | The context. |
int modem_connect_tones_rx_get | ( | modem_connect_tones_rx_state_t * | s | ) |
Test if a modem_connect tone has been detected.
s | The context. |
References modem_connect_tones_rx_state_s::hit, and MODEM_CONNECT_TONES_NONE.
modem_connect_tones_rx_state_t * modem_connect_tones_rx_init | ( | modem_connect_tones_rx_state_t * | s, |
int | tone_type, | ||
tone_report_func_t | tone_callback, | ||
void * | user_data | ||
) |
Initialise an instance of the modem connect tones detector.
s | The context. |
tone_type | The type of connect tone being tested for. |
tone_callback | An optional callback routine, used to report tones |
user_data | An opaque pointer passed to the callback routine, |
int modem_connect_tones_rx_release | ( | modem_connect_tones_rx_state_t * | s | ) |
Release an instance of the modem connect tones detector.
s | The context. |
int modem_connect_tones_tx | ( | modem_connect_tones_tx_state_t * | s, |
int16_t | amp[], | ||
int | len | ||
) |
Generate a block of modem connect tones samples.
s | The context. |
amp | An array of signal samples. |
len | The number of samples to generate. |
int modem_connect_tones_tx_free | ( | modem_connect_tones_tx_state_t * | s | ) |
Free an instance of the modem connect tones generator.
s | The context. |
modem_connect_tones_tx_state_t * modem_connect_tones_tx_init | ( | modem_connect_tones_tx_state_t * | s, |
int | tone_type | ||
) |
Initialise an instance of the modem connect tones generator.
s | The context. |
int modem_connect_tones_tx_release | ( | modem_connect_tones_tx_state_t * | s | ) |
Release an instance of the modem connect tones generator.
s | The context. |