synchronous 1:1 input to output with historyOverride work to provide the signal processing implementation. More...

#include <sync_block.h>

List of all members.

Public Member Functions
virtual int	work (int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)=0
	just like gr::block::general_work, only this arranges to call consume_each for you
void	forecast (int noutput_items, gr_vector_int &ninput_items_required)
	Estimate input requirements given output request.
int	general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
	compute output items from input items
int	fixed_rate_ninput_to_noutput (int ninput)
	Given ninput samples, return number of output samples that will be produced. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this.
int	fixed_rate_noutput_to_ninput (int noutput)
	Given noutput samples, return number of input samples required to produce noutput. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this.
Protected Member Functions
	sync_block (void)
	sync_block (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature)

Detailed Description

synchronous 1:1 input to output with history

Override work to provide the signal processing implementation.

Constructor & Destructor Documentation

gr::sync_block::sync_block ( void ) [inline, protected]

gr::sync_block::sync_block	(	const std::string &	name,
		gr::io_signature::sptr	input_signature,
		gr::io_signature::sptr	output_signature
	)		`[protected]`

Member Function Documentation

int gr::sync_block::fixed_rate_ninput_to_noutput ( int ninput ) [virtual]

Given ninput samples, return number of output samples that will be produced. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this.

Reimplemented from gr::block.

Reimplemented in gr::sync_interpolator, and gr::sync_decimator.

int gr::sync_block::fixed_rate_noutput_to_ninput ( int noutput ) [virtual]

Given noutput samples, return number of input samples required to produce noutput. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this.

Reimplemented from gr::block.

Reimplemented in gr::sync_interpolator, and gr::sync_decimator.

void gr::sync_block::forecast	(	int	noutput_items,
		gr_vector_int &	ninput_items_required
	)		`[virtual]`

Estimate input requirements given output request.

Parameters:

noutput_items	number of output items to produce
ninput_items_required	number of input items required on each input stream

Given a request to product noutput_items, estimate the number of data items required on each input stream. The estimate doesn't have to be exact, but should be close.

Reimplemented from gr::block.

Reimplemented in gr::sync_interpolator, gr::sync_decimator, gr::fft::ctrlport_probe_psd_impl, atsc_equalizer, and atsc_pad.

int gr::sync_block::general_work	(	int	noutput_items,
		gr_vector_int &	ninput_items,
		gr_vector_const_void_star &	input_items,
		gr_vector_void_star &	output_items
	)		`[virtual]`

compute output items from input items

Parameters:

noutput_items	number of output items to write on each output stream
ninput_items	number of input items available on each input stream
input_items	vector of pointers to the input items, one entry per input stream
output_items	vector of pointers to the output items, one entry per output stream

Returns:: number of items actually written to each output stream, or -1 on EOF. It is OK to return a value less than noutput_items. -1 <= return value <= noutput_items

general_work must call consume or consume_each to indicate how many items were consumed on each input stream.

Reimplemented from gr::block.

Reimplemented in gr::sync_interpolator, and gr::sync_decimator.

virtual int gr::sync_block::work	(	int	noutput_items,
		gr_vector_const_void_star &	input_items,
		gr_vector_void_star &	output_items
	)		`[pure virtual]`

just like gr::block::general_work, only this arranges to call consume_each for you

The user must override work to define the signal processing code

Implemented in tag_source_demo, gr::wxgui::oscope_sink_x, atsc_fpll, gr::fft::ctrlport_probe_psd_impl, atsc_equalizer, atsc_randomizer, gr::fft::fft_vcc_fftw, gr::fft::fft_vfc_fftw, gr::fft::goertzel_fc_impl, atsc_deinterleaver, atsc_fs_checker, atsc_rs_decoder, atsc_rs_encoder, atsc_viterbi_decoder, atsc_derandomizer, atsc_interleaver, atsc_pad, atsc_trellis_encoder, atsc_ds_to_softds, atsc_depad, and tag_sink_demo.

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

sync_block.h

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation