GNU Radio 3.6.4.1 C++ API
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Polyphase synthesis filterbank with gr_complex input, gr_complex output and float taps. More...
#include <gr_pfb_synthesizer_ccf.h>
Public Member Functions | |
~gr_pfb_synthesizer_ccf () | |
void | set_taps (const std::vector< float > &taps) |
void | print_taps () |
std::vector< std::vector< float > > | taps () const |
void | set_channel_map (const std::vector< int > &map) |
std::vector< int > | channel_map () const |
int | work (int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) |
just like gr_block::general_work, only this arranges to call consume_each for you | |
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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 | |
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. |
Friends | |
GR_CORE_API gr_pfb_synthesizer_ccf_sptr | gr_make_pfb_synthesizer_ccf (unsigned int numchans, const std::vector< float > &taps, bool twox) |
Additional Inherited Members | |
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gr_sync_interpolator (void) | |
gr_sync_interpolator (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature, unsigned interpolation) | |
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gr_sync_block (void) | |
gr_sync_block (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature) | |
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gr_block (void) | |
gr_block (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature) | |
void | set_fixed_rate (bool fixed_rate) |
void | add_item_tag (unsigned int which_output, uint64_t abs_offset, const pmt::pmt_t &key, const pmt::pmt_t &value, const pmt::pmt_t &srcid=pmt::PMT_F) |
Adds a new tag onto the given output buffer. | |
void | add_item_tag (unsigned int which_output, const gr_tag_t &tag) |
Adds a new tag onto the given output buffer. | |
void | remove_item_tag (unsigned int which_input, uint64_t abs_offset, const pmt::pmt_t &key, const pmt::pmt_t &value, const pmt::pmt_t &srcid=pmt::PMT_F) |
Removes a tag from the given input buffer. | |
void | remove_item_tag (unsigned int which_input, const gr_tag_t &tag) |
Removes a tag from the given input buffer. | |
void | get_tags_in_range (std::vector< gr_tag_t > &v, unsigned int which_input, uint64_t abs_start, uint64_t abs_end) |
Given a [start,end), returns a vector of all tags in the range. | |
void | get_tags_in_range (std::vector< gr_tag_t > &v, unsigned int which_input, uint64_t abs_start, uint64_t abs_end, const pmt::pmt_t &key) |
Given a [start,end), returns a vector of all tags in the range with a given key. | |
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gr_basic_block (void) | |
gr_basic_block (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature) | |
Protected constructor prevents instantiation by non-derived classes. | |
void | set_input_signature (gr_io_signature_sptr iosig) |
may only be called during constructor | |
void | set_output_signature (gr_io_signature_sptr iosig) |
may only be called during constructor | |
void | set_color (vcolor color) |
Allow the flowgraph to set for sorting and partitioning. | |
vcolor | color () const |
bool | has_msg_handler (pmt::pmt_t which_port) |
Tests if there is a handler attached to port which_port . | |
virtual void | dispatch_msg (pmt::pmt_t which_port, pmt::pmt_t msg) |
Polyphase synthesis filterbank with gr_complex input, gr_complex output and float taps.
gr_pfb_synthesizer_ccf::~gr_pfb_synthesizer_ccf | ( | ) |
std::vector<int> gr_pfb_synthesizer_ccf::channel_map | ( | ) | const |
Gets the current channel map.
void gr_pfb_synthesizer_ccf::print_taps | ( | ) |
Print all of the filterbank taps to screen.
void gr_pfb_synthesizer_ccf::set_channel_map | ( | const std::vector< int > & | map | ) |
Set the channel map. Channels are numbers as: N/2+1 | ... | N-1 | 0 | 1 | 2 | ... | N/2 <——————- 0 ——————–> freq
So input stream 0 goes to channel 0, etc. Setting a new channel map allows the user to specify where in frequency he/she wants the input stream to go. This is especially useful to avoid putting signals into the channels on the edge of the spectrum which can either wrap around (in the case of odd number of channels) and be affected by filter rolloff in the transmitter.
The map must be at least the number of streams being sent to the block. Less and the algorithm will not have enough data to properly setup the buffers. Any more channels specified will be ignored.
void gr_pfb_synthesizer_ccf::set_taps | ( | const std::vector< float > & | taps | ) |
Resets the filterbank's filter taps with the new prototype filter
taps | (vector/list of floats) The prototype filter to populate the filterbank. |
std::vector<std::vector<float> > gr_pfb_synthesizer_ccf::taps | ( | ) | const |
Return a vector<vector<>> of the filterbank taps
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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
Implements gr_sync_block.
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friend |
Build the polyphase synthesis filterbank.
numchans | (unsigned integer) Specifies the number of channels M |
taps | (vector/list of floats) The prototype filter to populate the filterbank. |
twox | (bool) use 2x oversampling or not (default is no) |