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gr_sync_interpolator Class Reference
[Signal Processing Blocks]

#include <gr_sync_interpolator.h>

Inheritance diagram for gr_sync_interpolator:

gr_sync_block gr_block gr_bytes_to_syms gr_interleave gr_interp_fir_filter_ccc gr_interp_fir_filter_ccf gr_interp_fir_filter_fcc gr_interp_fir_filter_fff gr_interp_fir_filter_fsf gr_interp_fir_filter_scc List of all members.

Detailed Description

synchronous 1:N input to output with history

Override work to provide the signal processing implementation.


Public Member Functions

unsigned interpolation () const
void set_interpolation (unsigned interpolation)
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

Protected Member Functions

 gr_sync_interpolator (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature, unsigned interpolation)


Constructor & Destructor Documentation

gr_sync_interpolator::gr_sync_interpolator const std::string &  name,
gr_io_signature_sptr  input_signature,
gr_io_signature_sptr  output_signature,
unsigned  interpolation
[protected]
 


Member Function Documentation

void gr_sync_interpolator::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_sync_block.

int gr_sync_interpolator::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_sync_block.

unsigned gr_sync_interpolator::interpolation  )  const [inline]
 

void gr_sync_interpolator::set_interpolation unsigned  interpolation  )  [inline]
 


The documentation for this class was generated from the following files:
Generated on Tue Mar 29 19:32:30 2005 for GNU Radio 2.x by  doxygen 1.4.2