spandsp 0.0.6
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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. | |
int | modem_connect_tones_tx_release (modem_connect_tones_tx_state_t *s) |
Release an instance of the modem connect tones generator. | |
int | modem_connect_tones_tx_free (modem_connect_tones_tx_state_t *s) |
Free an instance of the modem connect tones generator. | |
SPAN_DECLARE_NONSTD (int) modem_connect_tones_tx(modem_connect_tones_tx_state_t *s | |
Generate a block of modem connect tones samples. | |
int | modem_connect_tones_rx_get (modem_connect_tones_rx_state_t *s) |
Test if a modem_connect tone has been detected. | |
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. | |
int | modem_connect_tones_rx_release (modem_connect_tones_rx_state_t *s) |
Release an instance of the modem connect tones detector. | |
int | modem_connect_tones_rx_free (modem_connect_tones_rx_state_t *s) |
Free an instance of the modem connect tones detector. | |
const char * | modem_connect_tone_to_str (int tone) |
Variables | |
int16_t | amp [] |
int16_t int | len |
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_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, |
References modem_connect_tones_rx_state_s::am_level, modem_connect_tones_rx_state_s::callback_data, modem_connect_tones_rx_state_s::channel_level, modem_connect_tones_rx_state_s::flags_seen, modem_connect_tones_rx_state_s::framing_ok_announced, fsk_rx_init(), fsk_rx_signal_cutoff(), modem_connect_tones_rx_state_s::good_cycles, modem_connect_tones_rx_state_s::hit, MODEM_CONNECT_TONES_ANS, MODEM_CONNECT_TONES_ANS_PR, MODEM_CONNECT_TONES_ANSAM, MODEM_CONNECT_TONES_ANSAM_PR, MODEM_CONNECT_TONES_FAX_CED_OR_PREAMBLE, MODEM_CONNECT_TONES_FAX_PREAMBLE, MODEM_CONNECT_TONES_NONE, modem_connect_tones_rx_state_s::notch_level, modem_connect_tones_rx_state_s::num_bits, modem_connect_tones_rx_state_s::raw_bit_stream, modem_connect_tones_rx_state_s::tone_callback, modem_connect_tones_rx_state_s::tone_cycle_duration, modem_connect_tones_rx_state_s::tone_present, modem_connect_tones_rx_state_s::tone_type, modem_connect_tones_rx_state_s::v21rx, modem_connect_tones_rx_state_s::z15hz_1, and modem_connect_tones_rx_state_s::znotch_1.
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_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. |
References dds_phase_rate(), dds_scaling_dbm0(), modem_connect_tones_tx_state_s::duration_timer, modem_connect_tones_tx_state_s::hop_timer, MODEM_CONNECT_TONES_ANS, MODEM_CONNECT_TONES_ANS_PR, MODEM_CONNECT_TONES_ANSAM, MODEM_CONNECT_TONES_ANSAM_PR, MODEM_CONNECT_TONES_BELL_ANS, MODEM_CONNECT_TONES_CALLING_TONE, and MODEM_CONNECT_TONES_FAX_CNG.
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. |
SPAN_DECLARE_NONSTD | ( | int | ) |
Generate a block of modem connect tones samples.
Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
Get a bit of received non-ECM image data.
Get the next bit of a transmitted serial bit stream.
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 to generate. |
s | The context. |
amp | An array of signal samples. |
len | The number of samples in the array. |