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spandsp 0.0.6
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#include <v29rx.h>
Public Attributes | |
| int | bit_rate |
| The bit rate of the modem. Valid values are 4800, 7200 and 9600. | |
| 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. | |
| modem_status_func_t | status_handler |
| The callback function used to report modem status changes. | |
| void * | status_user_data |
| A user specified opaque pointer passed to the status function. | |
| qam_report_handler_t | qam_report |
| A callback function which may be enabled to report every symbol's constellation position. | |
| void * | qam_user_data |
| A user specified opaque pointer passed to the qam_report callback routine. | |
| float | agc_scaling |
| The scaling factor accessed by the AGC algorithm. | |
| float | agc_scaling_save |
| The previous value of agc_scaling, needed to reuse old training. | |
| float | eq_delta |
| The current delta factor for updating the equalizer coefficients. | |
| complexf_t | eq_coeff [33] |
| The adaptive equalizer coefficients. | |
| complexf_t | eq_coeff_save [33] |
| A saved set of adaptive equalizer coefficients for use after restarts. | |
| complexf_t | eq_buf [33] |
| The equalizer signal buffer. | |
| float | symbol_sync_low [2] |
| float | symbol_sync_high [2] |
| float | symbol_sync_dc_filter [2] |
| float | baud_phase |
| float | training_error |
| A measure of how much mismatch there is between the real constellation, and the decoded symbol positions. | |
| float | carrier_track_p |
| The proportional part of the carrier tracking filter. | |
| float | carrier_track_i |
| The integral part of the carrier tracking filter. | |
| float | rrc_filter [27] |
| The root raised cosine (RRC) pulse shaping filter buffer. | |
| int | rrc_filter_step |
| Current offset into the RRC pulse shaping filter buffer. | |
| uint32_t | scramble_reg |
| The register for the data scrambler. | |
| uint8_t | training_scramble_reg |
| The register for the training scrambler. | |
| int | training_cd |
| The current step in the table of CD constellation positions. | |
| int | old_train |
| TRUE if the previous trained values are to be reused. | |
| int | training_stage |
| The section of the training data we are currently in. | |
| int | training_count |
| A count of how far through the current training step we are. | |
| int16_t | last_sample |
| The value of the last signal sample, using the a simple HPF for signal power estimation. | |
| int | signal_present |
| >0 if a signal above the minimum is present. It may or may not be a V.29 signal. | |
| int | carrier_drop_pending |
| Whether or not a carrier drop was detected and the signal delivery is pending. | |
| int | low_samples |
| A count of the current consecutive samples below the carrier off threshold. | |
| int16_t | high_sample |
| A highest magnitude sample seen. | |
| uint32_t | carrier_phase |
| The current phase of the carrier (i.e. the DDS parameter). | |
| int32_t | carrier_phase_rate |
| The update rate for the phase of the carrier (i.e. the DDS increment). | |
| int32_t | carrier_phase_rate_save |
| The carrier update rate saved for reuse when using short training. | |
| power_meter_t | power |
| A power meter, to measure the HPF'ed signal power in the channel. | |
| int32_t | carrier_on_power |
| The power meter level at which carrier on is declared. | |
| int32_t | carrier_off_power |
| The power meter level at which carrier off is declared. | |
| int | eq_step |
| Current read offset into the equalizer buffer. | |
| int | eq_put_step |
| Current write offset into the equalizer buffer. | |
| int | eq_skip |
| Symbol counter to the next equalizer update. | |
| int | baud_half |
| The current half of the baud. | |
| int | total_baud_timing_correction |
| The total symbol timing correction since the carrier came up. This is only for performance analysis purposes. | |
| int32_t | start_angles [2] |
| Starting phase angles for the coarse carrier aquisition step. | |
| int32_t | angles [16] |
| History list of phase angles for the coarse carrier aquisition step. | |
| int | constellation_state |
| The position of the current symbol in the constellation, used for differential decoding. | |
| logging_state_t | logging |
| Error and flow logging control. | |
V.29 modem receive side descriptor. This defines the working state for a single instance of a V.29 modem receiver.
| float v29_rx_state_s::baud_phase |
Baud phase for symbol sync.
Referenced by v29_rx_restart().
| float v29_rx_state_s::symbol_sync_dc_filter[2] |
DC filter for symbol sync.
Referenced by v29_rx_restart().
| float v29_rx_state_s::symbol_sync_high[2] |
High band edge filter for symbol sync.
Referenced by v29_rx_restart().
| float v29_rx_state_s::symbol_sync_low[2] |
Low band edge filter for symbol sync.
Referenced by v29_rx_restart().