spandsp 3.0.0
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#include <fax_modems.h>
Public Attributes | ||
bool | use_tep | |
True if talker echo protection should be sent for the image modems. | ||
span_tone_report_func_t | tone_callback | |
The callback function used to report detected tones. | ||
void * | tone_callback_user_data | |
A user specified opaque pointer passed to the tone_callback function. | ||
int | transmit_on_idle | |
hdlc_tx_state_t | hdlc_tx | |
An HDLC context used when transmitting HDLC messages. | ||
hdlc_rx_state_t | hdlc_rx | |
An HDLC context used when receiving HDLC messages. | ||
fsk_tx_state_t | v21_tx | |
A V.21 FSK modem context used when transmitting HDLC over V.21 messages. | ||
fsk_rx_state_t | v21_rx | |
A V.21 FSK modem context used when receiving HDLC over V.21 messages. | ||
union { | ||
v17_tx_state_t v17_tx | ||
A V.17 modem context used when sending FAXes at 7200bps, 9600bps 12000bps or 14400bps. | ||
v17_rx_state_t v17_rx | ||
A V.29 modem context used when receiving FAXes at 7200bps, 9600bps 12000bps or 14400bps. | ||
v27ter_tx_state_t v27ter_tx | ||
A V.27ter modem context used when sending FAXes at 2400bps or 4800bps. | ||
v27ter_rx_state_t v27ter_rx | ||
A V.27ter modem context used when receiving FAXes at 2400bps or 4800bps. | ||
v29_tx_state_t v29_tx | ||
A V.29 modem context used when sending FAXes at 7200bps or 9600bps. | ||
v29_rx_state_t v29_rx | ||
A V.29 modem context used when receiving FAXes at 7200bps or 9600bps. | ||
} | fast_modems | |
silence_gen_state_t | silence_gen | |
Used to insert timed silences. | ||
modem_connect_tones_tx_state_t | connect_tx | |
CED or CNG generator. | ||
modem_connect_tones_rx_state_t | connect_rx | |
CED or CNG detector. | ||
dc_restore_state_t | dc_restore | |
int | fast_modem | |
The fast modem type currently in use. | ||
int | current_rx_type | |
The currently selected receiver type. | ||
int | current_tx_type | |
The currently selected transmitter type. | ||
int | bit_rate | |
bool | short_train | |
span_put_bit_func_t | put_bit | |
The callback function used to put each bit received. | ||
void * | put_bit_user_data | |
A user specified opaque pointer passed to the put_bit routine. | ||
span_get_bit_func_t | get_bit | |
The callback function used to get the next bit to be transmitted. | ||
void * | get_bit_user_data | |
A user specified opaque pointer passed to the get_bit function. | ||
hdlc_frame_handler_t | hdlc_accept | |
void * | hdlc_accept_user_data | |
bool | rx_signal_present | |
True if a carrier is present. Otherwise false. | ||
bool | rx_trained | |
True if a modem has trained correctly. | ||
bool | rx_frame_received | |
True if an HDLC frame has been received correctly. | ||
int | deferred_rx_handler_updates | |
span_rx_handler_t | rx_handler | |
The current receive signal handler. | ||
span_rx_handler_t | base_rx_handler | |
The current receive signal handler. Actual receiving hops between this and a dummy receive routine. | ||
void * | rx_user_data | |
span_rx_fillin_handler_t | rx_fillin_handler | |
The current receive missing signal fill-in handler. | ||
span_rx_fillin_handler_t | base_rx_fillin_handler | |
The current receive signal fillin handler. Actual receiving hops between this and a dummy receive routine. | ||
void * | rx_fillin_user_data | |
span_tx_handler_t | tx_handler | |
The current transmit signal handler. | ||
void * | tx_user_data | |
span_tx_handler_t | next_tx_handler | |
The next transmit signal handler, for two stage transmit operations. E.g. a short silence followed by a modem signal. | ||
void * | next_tx_user_data | |
int | tx_bit_rate | |
The current bit rate of the transmitter. | ||
int | rx_bit_rate | |
The current bit rate of the receiver. | ||
bool | transmit | |
If true, transmission is in progress. | ||
int | audio_rx_log | |
Audio logging file handle for received audio. | ||
int | audio_tx_log | |
Audio logging file handle for transmitted audio. | ||
logging_state_t | logging | |
Error and flow logging control. | ||
The set of modems needed for FAX, plus the auxilliary stuff, like tone generation.
int fax_modems_state_s::transmit_on_idle |
If true, transmit silence when there is nothing else to transmit. If false return only the actual generated audio. Note that this only affects untimed silences. Timed silences (e.g. the 75ms silence between V.21 and a high speed modem) will alway be transmitted as silent audio.
Referenced by fax_set_transmit_on_idle(), fax_tx(), faxtester_set_transmit_on_idle(), faxtester_tx(), t31_set_transmit_on_idle(), t31_tx(), t38_gateway_set_transmit_on_idle(), and t38_gateway_tx().