Rational Resampling Polyphase FIR filter with float input, float output and float taps. More...
#include <gr_rational_resampler_base_fff.h>
Public Member Functions | |
| ~gr_rational_resampler_base_fff () | |
| unsigned | history () const |
| void | set_history (unsigned history) |
| unsigned | interpolation () const |
| unsigned | decimation () const |
| void | set_taps (const std::vector< float > &taps) |
| 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 | |
Friends | |
| GR_CORE_API gr_rational_resampler_base_fff_sptr | gr_make_rational_resampler_base_fff (unsigned interpolation, unsigned decimation, const std::vector< float > &taps) |
Detailed Description
Rational Resampling Polyphase FIR filter with float input, float output and float taps.
Constructor & Destructor Documentation
| gr_rational_resampler_base_fff::~gr_rational_resampler_base_fff | ( | ) |
Member Function Documentation
| unsigned gr_rational_resampler_base_fff::decimation | ( | ) | const [inline] |
| void gr_rational_resampler_base_fff::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.
| int gr_rational_resampler_base_fff::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.
Implements gr_block.
| unsigned gr_rational_resampler_base_fff::history | ( | ) | const [inline] |
Assume block computes y_i = f(x_i, x_i-1, x_i-2, x_i-3...) History is the number of x_i's that are examined to produce one y_i. This comes in handy for FIR filters, where we use history to ensure that our input contains the appropriate "history" for the filter. History should be equal to the number of filter taps.
Reimplemented from gr_block.
| unsigned gr_rational_resampler_base_fff::interpolation | ( | ) | const [inline] |
| void gr_rational_resampler_base_fff::set_history | ( | unsigned | history | ) | [inline] |
Reimplemented from gr_block.
References gr_block::history().
| void gr_rational_resampler_base_fff::set_taps | ( | const std::vector< float > & | taps | ) |
Friends And Related Function Documentation
| GR_CORE_API gr_rational_resampler_base_fff_sptr gr_make_rational_resampler_base_fff | ( | unsigned | interpolation, |
| unsigned | decimation, | ||
| const std::vector< float > & | taps | ||
| ) | [friend] |
The documentation for this class was generated from the following file:
