GNU Radio 3.6.4.2 C++ API
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IIR filter with float input, float output and double tapsThis filter uses the Direct Form I implementation, where fftaps
contains the feed-forward taps, and fbtaps
the feedback ones.
More...
#include <gr_iir_filter_ffd.h>
Public Member Functions | |
~gr_iir_filter_ffd () | |
void | set_taps (const std::vector< double > &fftaps, const std::vector< double > &fbtaps) throw (std::invalid_argument) |
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 More... | |
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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) | |
virtual | ~gr_sync_block (void) |
int | general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) |
implements work -> calls work More... | |
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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) | |
long | unique_id (void) const |
std::string | name (void) const |
virtual | ~gr_block (void) |
gr_io_signature_sptr | input_signature (void) const |
gr_io_signature_sptr | output_signature (void) const |
void | set_input_signature (gr_io_signature_sptr sig) |
void | set_output_signature (gr_io_signature_sptr sig) |
virtual bool | check_topology (int ninputs, int noutputs) |
virtual void | forecast (int, std::vector< int > &) |
Overload me! I am the forecast. More... | |
virtual bool | start (void) |
virtual bool | stop (void) |
void | consume_each (const int how_many_items) |
Call during work to consume items. More... | |
void | consume (const size_t i, const int how_many_items) |
void | produce (const size_t o, const int how_many_items) |
uint64_t | nitems_read (const size_t which_input=0) |
Get absolute count of all items consumed on the given input port. More... | |
uint64_t | nitems_written (const size_t which_output=0) |
Get absolute count of all items produced on the given output port. More... | |
void | add_item_tag (const size_t which_output, const gr_tag_t &tag) |
void | add_item_tag (const size_t which_output, uint64_t abs_offset, const pmt::pmt_t &key, const pmt::pmt_t &value, const pmt::pmt_t &srcid=pmt::PMT_F) |
void | get_tags_in_range (std::vector< gr_tag_t > &tags, const size_t which_input, uint64_t abs_start, uint64_t abs_end, const pmt::pmt_t &key=pmt::pmt_t()) |
void | set_alignment (const size_t alignment) |
bool | is_unaligned (void) |
size_t | fixed_rate_noutput_to_ninput (const size_t noutput_items) |
size_t | interpolation (void) const |
void | set_interpolation (const size_t) |
size_t | decimation (void) const |
void | set_decimation (const size_t) |
int | max_noutput_items (void) const |
void | set_max_noutput_items (int) |
void | unset_max_noutput_items (void) |
bool | is_set_max_noutput_items (void) const |
unsigned | history (void) const |
void | set_history (unsigned history) |
void | set_fixed_rate (const bool fixed_rate) |
bool | fixed_rate (void) const |
Get the fixed rate setting. More... | |
void | set_relative_rate (const double relative_rate) |
double | relative_rate (void) const |
Get the relative rate setting. More... | |
void | set_output_multiple (const size_t multiple) |
size_t | output_multiple (void) const |
Get the output multiple setting. More... | |
tag_propagation_policy_t | tag_propagation_policy (void) |
void | set_tag_propagation_policy (tag_propagation_policy_t p) |
void | set_max_output_buffer (long) |
void | set_max_output_buffer (int, long) |
long | max_output_buffer (size_t) |
void | set_min_output_buffer (long) |
void | set_min_output_buffer (int, long) |
long | min_output_buffer (size_t) |
std::string | symbol_name () const |
bool | alias_set () |
std::string | alias () |
pmt::pmt_t | alias_pmt () |
void | set_block_alias (std::string name) |
template<typename T > | |
void | set_msg_handler (pmt::pmt_t which_port, T msg_handler) |
void | message_port_register_in (pmt::pmt_t) |
void | message_port_register_out (pmt::pmt_t) |
void | message_port_pub (pmt::pmt_t, pmt::pmt_t) |
void | message_port_sub (pmt::pmt_t, pmt::pmt_t) |
void | message_port_unsub (pmt::pmt_t, pmt::pmt_t) |
virtual bool | message_port_is_hier (pmt::pmt_t port_id) |
virtual bool | message_port_is_hier_in (pmt::pmt_t port_id) |
virtual bool | message_port_is_hier_out (pmt::pmt_t port_id) |
pmt::pmt_t | message_ports_in () |
Get input message port names. More... | |
pmt::pmt_t | message_ports_out () |
Get output message port names. More... | |
bool | empty_p (pmt::pmt_t which_port) |
is the queue empty? More... | |
bool | empty_p () |
void | insert_tail (pmt::pmt_t, pmt::pmt_t) |
pmt::pmt_t | delete_head_nowait (pmt::pmt_t) |
pmt::pmt_t | delete_head_blocking (pmt::pmt_t) |
msg_queue_t::iterator | get_iterator (pmt::pmt_t which_port) |
void | erase_msg (pmt::pmt_t which_port, msg_queue_t::iterator it) |
virtual bool | has_msg_port (pmt::pmt_t which_port) |
bool | has_msg_handler (pmt::pmt_t which_port) |
Tests if there is a handler attached to port which_port . More... | |
virtual void | dispatch_msg (pmt::pmt_t which_port, pmt::pmt_t msg) |
void | set_processor_affinity (const std::vector< int > &mask) |
Set the thread's affinity to processor core n . More... | |
void | unset_processor_affinity () |
Remove processor affinity to a specific core. More... | |
std::vector< int > | processor_affinity () |
Get the current processor affinity. More... | |
void | work (const InputItems &, const OutputItems &) |
implements work -> calls general work More... | |
void | notify_topology (const size_t, const size_t) |
notifications of new topological commits More... | |
void | notify_active (void) |
start notification More... | |
void | notify_inactive (void) |
stop notification More... | |
virtual void | propagate_tags (const size_t, const gras::TagIter &) |
implements tag_propagation_policy() More... | |
void | _update_input_reserve (void) |
gras::BufferQueueSptr | input_buffer_allocator (const size_t, const gras::SBufferConfig &) |
gras::BufferQueueSptr | output_buffer_allocator (const size_t, const gras::SBufferConfig &) |
Friends | |
GR_CORE_API gr_iir_filter_ffd_sptr | gr_make_iir_filter_ffd (const std::vector< double > &fftaps, const std::vector< double > &fbtaps) throw (std::invalid_argument) |
IIR filter with float input, float output and double taps
This filter uses the Direct Form I implementation, where fftaps
contains the feed-forward taps, and fbtaps
the feedback ones.
The input and output satisfy a difference equation of the form \f{ y[n] - \sum_{k=1}^{M} a_k y[n-k] = \sum_{k=0}^{N} b_k x[n-k] \f}
with the corresponding rational system function \f{ H(z) = \ frac{\sum_{k=0}^{M} b_k z^{-k}}{1 - \sum_{k=1}^{N} a_k z^{-k}} \f}
Note that some texts define the system function with a + in the denominator. If you're using that convention, you'll need to negate the feedback taps.
gr_iir_filter_ffd::~gr_iir_filter_ffd | ( | ) |
void gr_iir_filter_ffd::set_taps | ( | const std::vector< double > & | fftaps, |
const std::vector< double > & | fbtaps | ||
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throw | ( | std::invalid_argument | |
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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
Reimplemented from gr_sync_block.
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friend |