v34_rx_state_t Struct Reference

Public Attributes
bool	calling_party
	True if this is the calling side modem.
bool	duplex
	True if this is a full duplex modem.
bool	half_duplex_source
bool	half_duplex_state
int	bit_rate
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_put_bit_func_t	put_aux_bit
	The callback function used to put each aux bit received.
void *	put_aux_bit_user_data
	A user specified opaque pointer passed to the put_aux_bit routine.
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.
int	baud_rate
	The current baud rate selection, as a value from 0 to 5.
bool	high_carrier
	True if using the higher of the two carrier frequency options.
int	stage
int	received_event
uint32_t	scramble_reg
	The register for the data scrambler.
int	scrambler_tap
	The scrambler tap which selects between the caller and answerer scramblers.
uint16_t	v0_pattern
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.
bool	signal_present
bitstream_state_t	bs
uint32_t	bitstream
uint32_t	r0
	Mapping frame output.
uint16_t	qbits [8]
uint16_t	ibits [4]
int	mjk [8]
	(x0,y0) (x1,y1)...
int	step_2d
v34_parameters_t	parms
	Parameters for the current bit rate and baud rate.
complexi16_t	yt
	yt's are the noise corrupted points fed to the viterbi decoder. Assumed to have format 9:7 (7 fractional bits)
complexi16_t	xt [4]
complexi16_t	x [3]
complexi16_t	h [3]
complexi16_t	xy [2][4]
	These are quantized points in the respective 2D coset (0,1,2,3)
viterbi_t	viterbi
int16_t	ww [3]
	ww contains old z, current z and current w
uint32_t	carrier_phase
	The current phase of the carrier (i.e. the DDS parameter).
int32_t	carrier_phase_rate_save
	The carrier update rate saved for reuse when using short training.
int32_t	cc_carrier_phase_rate
	The update rate for the phase of the control channel carrier (i.e. the DDS increment).
int32_t	v34_carrier_phase_rate
	The update rate for the phase of the V.34 carrier (i.e. the DDS increment).
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.
int	eq_step
	Current read offset into the equalizer buffer.
int	eq_put_step
	Current write offset into the equalizer buffer.
int	shaper_sets
float	agc_scaling
	The scaling factor assessed by the AGC algorithm.
float	agc_scaling_save
	The previous value of agc_scaling, needed to reuse old training.
ted_t	pri_ted
ted_t	cc_ted
float	carrier_track_p
	The proportional part of the carrier tracking filter.
float	carrier_track_i
	The integral part of the carrier tracking filter.
const v34_rx_shaper_t *	shaper_re
const v34_rx_shaper_t *	shaper_im
int	total_baud_timing_correction
	The total symbol timing correction since the carrier came up. This is only for performance analysis purposes.
int	baud_half
	The current half of the baud.
int	round_trip_delay_estimate
	The measured round trip delay estimate, in sample times.
int	duration
int	bit_count
int	target_bits
uint16_t	crc
uint32_t	last_angles [2]
uint8_t	info_buf [25]
	Buffer for receiving info frames.
int	super_frame
int	data_frame
int	s_bit_cnt
int	aux_bit_cnt
uint8_t	rxbuf [50]
int	rxbits
int	rxptr
int	blip_duration
v34_capabilities_t	far_capabilities
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.
bool	info0_acknowledgement
union {
info1a_t   info1a
info1c_t   info1c
infoh_t   infoh
};
int	step
int	persistence1
int	persistence2
int	mp_count
int	mp_len
int	mp_and_fill_len
int	mp_seen
int	dft_ptr
complexf_t	dft_buffer [160]
float	l1_l2_gains [25]
float	l1_l2_phases [25]
float	base_phase
complexf_t	last_sample
int	l1_l2_duration
int	current_demodulator
span_sample_timer_t	sample_time
	Used to align the transmit and receive positions, to ensure things like round trip delay are properly handled.
span_sample_timer_t	tone_ab_hop_time
logging_state_t *	logging

Member Data Documentation

half_duplex_source

bool v34_rx_state_t::half_duplex_source

The current source end when in half-duplex mode

Referenced by v34_half_duplex_change_mode(), and v34_restart().

half_duplex_state

bool v34_rx_state_t::half_duplex_state

The current operating state when in half-duplex mode

Referenced by v34_half_duplex_change_mode().

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The documentation for this struct was generated from the following file:

• private/v34.h