gnuradio.blocks

Processing blocks common to many flowgraphs.

Audio Signals

gnuradio.blocks.wavfile_sink	Write stream to a Microsoft PCM (.wav) file.
gnuradio.blocks.wavfile_source	Read stream from a Microsoft PCM (.wav) file, output floats.

Boolean Operators

gnuradio.blocks.and_bb	output = input[0] & input[1] & ... & input[M-1]
gnuradio.blocks.and_const_bb	output[m] = input[m] & value for all M streams.
gnuradio.blocks.and_const_ii	output[m] = input[m] & value for all M streams.
gnuradio.blocks.and_const_ss	output[m] = input[m] & value for all M streams.
gnuradio.blocks.and_ii	output = input[0] & input[1] & ... & input[M-1]
gnuradio.blocks.and_ss	output = input[0] & input[1] & ... & input[M-1]
gnuradio.blocks.not_bb	output = ~input
gnuradio.blocks.not_ii	output = ~input
gnuradio.blocks.not_ss	output = ~input
gnuradio.blocks.or_bb	output = input_0 | input_1 | , ... | input_N)
gnuradio.blocks.or_ii	output = input_0 | input_1 | , ... | input_N)
gnuradio.blocks.or_ss	output = input_0 | input_1 | , ... | input_N)
gnuradio.blocks.xor_bb	output = input_0 ^ input_1 ^ , ... ^ input_N)
gnuradio.blocks.xor_ii	output = input_0 ^ input_1 ^ , ... ^ input_N)
gnuradio.blocks.xor_ss	output = input_0 ^ input_1 ^ , ... ^ input_N)

Byte Operators

gnuradio.blocks.packed_to_unpacked_bb	Convert a stream of packed bytes or shorts to stream of unpacked bytes or shorts.
gnuradio.blocks.packed_to_unpacked_ii	Convert a stream of packed bytes or shorts to stream of unpacked bytes or shorts.
gnuradio.blocks.packed_to_unpacked_ss	Convert a stream of packed bytes or shorts to stream of unpacked bytes or shorts.
gnuradio.blocks.unpacked_to_packed_bb	Convert a stream of unpacked bytes or shorts into a stream of packed bytes or shorts.
gnuradio.blocks.unpacked_to_packed_ii	Convert a stream of unpacked bytes or shorts into a stream of packed bytes or shorts.
gnuradio.blocks.unpacked_to_packed_ss	Convert a stream of unpacked bytes or shorts into a stream of packed bytes or shorts.
gnuradio.blocks.pack_k_bits_bb	Converts a stream of bytes with 1 bit in the LSB to a byte with k relevent bits.
gnuradio.blocks.repack_bits_bb	Pack bits from the input stream onto bits of the output stream.
gnuradio.blocks.unpack_k_bits_bb	Converts a byte with k relevent bits to k output bytes with 1 bit in the LSB.

ControlPort

gnuradio.blocks.ctrlport_probe2_c	A ControlPort probe to export vectors of signals.
gnuradio.blocks.ctrlport_probe_c	A ControlPort probe to export vectors of signals.

Debug Tools

gnuradio.blocks.vector_sink_b	unsigned char sink that writes to a vector
gnuradio.blocks.vector_sink_c	gr_complex sink that writes to a vector
gnuradio.blocks.vector_sink_f	float sink that writes to a vector
gnuradio.blocks.vector_sink_i	int sink that writes to a vector
gnuradio.blocks.vector_sink_s	short sink that writes to a vector
gnuradio.blocks.annotator_1to1	1-to-1 stream annotator testing block. FOR TESTING PURPOSES ONLY.
gnuradio.blocks.annotator_alltoall	All-to-all stream annotator testing block.
gnuradio.blocks.annotator_raw	raw stream annotator testing block.
gnuradio.blocks.message_debug	Debug block for the message passing system.
gnuradio.blocks.random_pdu	Sends a random PDU at intervals.
gnuradio.blocks.tag_debug	Bit bucket that prints out any tag received.

File Operators

gnuradio.blocks.file_descriptor_sink	Write stream to file descriptor.
gnuradio.blocks.file_descriptor_source	Read stream from file descriptor.
gnuradio.blocks.file_meta_sink	Write stream to file with meta-data headers.
gnuradio.blocks.file_meta_source	Reads stream from file with meta-data headers.
gnuradio.blocks.file_sink	Write stream to file.
gnuradio.blocks.file_source	Read stream from file.
gnuradio.blocks.tagged_file_sink	A file sink that uses tags to save files.

Level Controllers

gnuradio.blocks.moving_average_cc	output is the moving sum of the last N samples, scaled by the scale factor
gnuradio.blocks.moving_average_ff	output is the moving sum of the last N samples, scaled by the scale factor
gnuradio.blocks.moving_average_ii	output is the moving sum of the last N samples, scaled by the scale factor
gnuradio.blocks.moving_average_ss	output is the moving sum of the last N samples, scaled by the scale factor
gnuradio.blocks.mute_cc	output = input or zero if muted.
gnuradio.blocks.mute_ff	output = input or zero if muted.
gnuradio.blocks.mute_ii	output = input or zero if muted.
gnuradio.blocks.mute_ss	output = input or zero if muted.
gnuradio.blocks.sample_and_hold_bb	sample and hold circuit
gnuradio.blocks.sample_and_hold_ff	sample and hold circuit
gnuradio.blocks.sample_and_hold_ii	sample and hold circuit
gnuradio.blocks.sample_and_hold_ss	sample and hold circuit
gnuradio.blocks.threshold_ff	Output a 1 or zero based on a threshold value.

Math Operators

gnuradio.blocks.add_cc	output = sum(input[0], input[1], ..., input[M-1])
gnuradio.blocks.add_const_bb	output = input + constant
gnuradio.blocks.add_const_cc	output = input + constant
gnuradio.blocks.add_const_ff	output = input + constant
gnuradio.blocks.add_const_ii	output = input + constant
gnuradio.blocks.add_const_ss	output = input + constant
gnuradio.blocks.add_const_vbb	output[m] = input[m] + constant vector for all M streams.
gnuradio.blocks.add_const_vcc	output[m] = input[m] + constant vector for all M streams.
gnuradio.blocks.add_const_vff	output[m] = input[m] + constant vector for all M streams.
gnuradio.blocks.add_const_vii	output[m] = input[m] + constant vector for all M streams.
gnuradio.blocks.add_const_vss	output[m] = input[m] + constant vector for all M streams.
gnuradio.blocks.add_ii	output = sum(input[0], input[1], ..., input[M-1])
gnuradio.blocks.add_ss	output = sum(input[0], input[1], ..., input[M-1])
gnuradio.blocks.argmax_fs	Compares vectors from multiple streams and determines the index in the vector and stream number where the maximum value occurred.
gnuradio.blocks.argmax_is	Compares vectors from multiple streams and determines the index in the vector and stream number where the maximum value occurred.
gnuradio.blocks.argmax_ss	Compares vectors from multiple streams and determines the index in the vector and stream number where the maximum value occurred.
gnuradio.blocks.divide_cc	output = input[0] / input[1] / ... / input[M-1]
gnuradio.blocks.divide_ff	output = input[0] / input[1] / ... / input[M-1]
gnuradio.blocks.divide_ii	output = input[0] / input[1] / ... / input[M-1]
gnuradio.blocks.divide_ss	output = input[0] / input[1] / ... / input[M-1]
gnuradio.blocks.integrate_cc	Integrate successive samples and decimate.
gnuradio.blocks.integrate_ff	Integrate successive samples and decimate.
gnuradio.blocks.integrate_ii	Integrate successive samples and decimate.
gnuradio.blocks.integrate_ss	Integrate successive samples and decimate.
gnuradio.blocks.max_ff	Compares vectors from multiple streams and determines the maximum value from each vector over all streams.
gnuradio.blocks.max_ii	Compares vectors from multiple streams and determines the maximum value from each vector over all streams.
gnuradio.blocks.max_ss	Compares vectors from multiple streams and determines the maximum value from each vector over all streams.
gnuradio.blocks.multiply_const_ii	output = input * constant
gnuradio.blocks.multiply_const_ss	output = input * constant
gnuradio.blocks.multiply_const_vcc	output = input * constant vector (element-wise)
gnuradio.blocks.multiply_const_vff	output = input * constant vector (element-wise)
gnuradio.blocks.multiply_const_vii	output = input * constant vector (element-wise)
gnuradio.blocks.multiply_const_vss	output = input * constant vector (element-wise)
gnuradio.blocks.multiply_ii	output = prod (input_0, input_1, ...)
gnuradio.blocks.multiply_ss	output = prod (input_0, input_1, ...)
gnuradio.blocks.sub_cc	output = input_0 - input_1 - ...)
gnuradio.blocks.sub_ff	output = input_0 - input_1 - ...)
gnuradio.blocks.sub_ii	output = input_0 - input_1 - ...)
gnuradio.blocks.sub_ss	output = input_0 - input_1 - ...)
gnuradio.blocks.add_ff	output = sum (input_0, input_1, ...)
gnuradio.blocks.conjugate_cc	output = complex conjugate of input
gnuradio.blocks.multiply_cc	output = prod (input_0, input_1, ...)
gnuradio.blocks.multiply_conjugate_cc	Multiplies stream 0 by the complex conjugate of stream 1.
gnuradio.blocks.multiply_const_cc	output = input * complex constant
gnuradio.blocks.multiply_const_ff	output = input * real constant
gnuradio.blocks.multiply_ff	output = prod (input_0, input_1, ...)
gnuradio.blocks.nlog10_ff	output = n*log10(input) + k
gnuradio.blocks.rms_cf	RMS average power.
gnuradio.blocks.rms_ff	RMS average power.
gnuradio.blocks.transcendental	A block that performs various transcendental math operations.

Measurement Tools

gnuradio.blocks.probe_signal_b	Sink that allows a sample to be grabbed from Python.
gnuradio.blocks.probe_signal_c	Sink that allows a sample to be grabbed from Python.
gnuradio.blocks.probe_signal_f	Sink that allows a sample to be grabbed from Python.
gnuradio.blocks.probe_signal_i	Sink that allows a sample to be grabbed from Python.
gnuradio.blocks.probe_signal_s	Sink that allows a sample to be grabbed from Python.
gnuradio.blocks.probe_signal_vb	Sink that allows a vector of samples to be grabbed from Python.
gnuradio.blocks.probe_signal_vc	Sink that allows a vector of samples to be grabbed from Python.
gnuradio.blocks.probe_signal_vf	Sink that allows a vector of samples to be grabbed from Python.
gnuradio.blocks.probe_signal_vi	Sink that allows a vector of samples to be grabbed from Python.
gnuradio.blocks.probe_signal_vs	Sink that allows a vector of samples to be grabbed from Python.
gnuradio.blocks.ctrlport_probe2_c	A ControlPort probe to export vectors of signals.
gnuradio.blocks.ctrlport_probe_c	A ControlPort probe to export vectors of signals.
gnuradio.blocks.message_debug	Debug block for the message passing system.
gnuradio.blocks.probe_rate	throughput measurement
gnuradio.blocks.tag_debug	Bit bucket that prints out any tag received.

Message Tools

gnuradio.blocks.message_burst_source	make(size_t itemsize, msg_queue_sptr msgq) -> message_burst_source_sptr
gnuradio.blocks.message_debug	Debug block for the message passing system.
gnuradio.blocks.message_sink	make(size_t itemsize, msg_queue_sptr msgq, bool dont_block, std::string const & lengthtagname) -> message_sink_sptr
gnuradio.blocks.message_source	make(size_t itemsize, msg_queue_sptr msgq) -> message_source_sptr
gnuradio.blocks.message_strobe	Send message at defined interval.
gnuradio.blocks.pdu_to_tagged_stream	Turns received PDUs into a tagged stream of items.
gnuradio.blocks.random_pdu	Sends a random PDU at intervals.
gnuradio.blocks.tagged_stream_to_pdu	Turns received stream data and tags into PDUs.

Miscellaneous

gnuradio.blocks.vector_source_b	source of unsigned char’s that gets its data from a vector
gnuradio.blocks.vector_source_c	source of gr_complex’s that gets its data from a vector
gnuradio.blocks.vector_source_f	source of float’s that gets its data from a vector
gnuradio.blocks.vector_source_i	source of int’s that gets its data from a vector
gnuradio.blocks.vector_source_s	source of short’s that gets its data from a vector
gnuradio.blocks.bin_statistics_f	control scanning and record frequency domain statistics
gnuradio.blocks.check_lfsr_32k_s	sink that checks if its input stream consists of a lfsr_32k sequence.
gnuradio.blocks.copy	output[i] = input[i]
gnuradio.blocks.delay	delay the input by a certain number of samples
gnuradio.blocks.head	copies the first N items to the output then signals done
gnuradio.blocks.lfsr_32k_source_s	LFSR pseudo-random source with period of 2^15 bits (2^11 shorts)
gnuradio.blocks.nop	Does nothing.
gnuradio.blocks.null_sink	Bit bucket.
gnuradio.blocks.null_source	A source of zeros used mainly for testing.
gnuradio.blocks.skiphead	skips the first N items, from then on copies items to the output
gnuradio.blocks.throttle	throttle flow of samples such that the average rate does not exceed samples_per_sec.

Modulators and Demodulators

gnuradio.blocks.vco_f

VCO - Voltage controlled oscillator.

Networking Tools

gnuradio.blocks.socket_pdu	Creates socket interface and translates traffic to PDUs.
gnuradio.blocks.tuntap_pdu	Creates TUNTAP interface and translates traffic to PDUs.
gnuradio.blocks.udp_sink	Write stream to an UDP socket.
gnuradio.blocks.udp_source	Read stream from an UDP socket.

Peak Detectors

gnuradio.blocks.peak_detector_fb	Detect the peak of a signal.
gnuradio.blocks.peak_detector_ib	Detect the peak of a signal.
gnuradio.blocks.peak_detector_sb	Detect the peak of a signal.
gnuradio.blocks.burst_tagger	Sets a burst on/off tag based on the value of the trigger input.
gnuradio.blocks.peak_detector2_fb	Detect the peak of a signal.
gnuradio.blocks.plateau_detector_fb	Detects a plateau and marks the middle.

Stream Operators

gnuradio.blocks.vector_insert_b	source of unsigned char’s that gets its data from a vector
gnuradio.blocks.vector_insert_c	source of gr_complex’s that gets its data from a vector
gnuradio.blocks.vector_insert_f	source of float’s that gets its data from a vector
gnuradio.blocks.vector_insert_i	source of int’s that gets its data from a vector
gnuradio.blocks.vector_insert_s	source of short’s that gets its data from a vector
gnuradio.blocks.deinterleave	deinterleave a single input into N outputs
gnuradio.blocks.endian_swap	Convert stream of items into thier byte swapped version.
gnuradio.blocks.interleave	interleave N inputs into a single output
gnuradio.blocks.keep_m_in_n	decimate a stream, keeping items out of every .
gnuradio.blocks.keep_one_in_n	decimate a stream, keeping one item out of every .
gnuradio.blocks.patterned_interleaver	Interleave items based on the provided vector .
gnuradio.blocks.regenerate_bb	Detect the peak of a signal and repeat every period samples.
gnuradio.blocks.repeat	repeat each input times
gnuradio.blocks.stream_mux	Stream muxing block to multiplex many streams into one with a specified format.
gnuradio.blocks.stream_to_streams	convert a stream of items into a N streams of items
gnuradio.blocks.stream_to_vector	convert a stream of items into a stream of gnuradio/blocks containing nitems_per_block
gnuradio.blocks.streams_to_stream	Convert N streams of 1 item into a 1 stream of N items.
gnuradio.blocks.streams_to_vector	convert N streams of items to 1 stream of vector length N
gnuradio.blocks.stretch_ff	adjust y-range of an input vector by mapping to range (max-of-input, stipulated-min). Primarily for spectral signature matching by normalizing spectrum dynamic ranges.
gnuradio.blocks.tagged_stream_mux	Combines tagged streams.
gnuradio.blocks.vector_map	Maps elements from a set of input vectors to a set of output vectors.
gnuradio.blocks.vector_to_stream	convert a stream of gnuradio/blocks of nitems_per_block items into a stream of items
gnuradio.blocks.vector_to_streams	Convert 1 stream of vectors of length N to N streams of items.

Stream Tag Tools

gnuradio.blocks.burst_tagger	Sets a burst on/off tag based on the value of the trigger input.
gnuradio.blocks.tag_debug	Bit bucket that prints out any tag received.
gnuradio.blocks.tagged_file_sink	A file sink that uses tags to save files.

Data Type Converters

gnuradio.blocks.char_to_float	Convert stream of chars to a stream of float.
gnuradio.blocks.char_to_short	Convert stream of chars to a stream of short.
gnuradio.blocks.complex_to_arg	complex in, arg (arctan) out (float)
gnuradio.blocks.complex_to_float	Convert a stream of gr_complex to 1 or 2 streams of float.
gnuradio.blocks.complex_to_imag	Produces the imaginary part (as a float0 of a complex stream.
gnuradio.blocks.complex_to_interleaved_short	Convert stream of complex to a stream of interleaved shorts.
gnuradio.blocks.complex_to_mag	complex in, magnitude out (float)
gnuradio.blocks.complex_to_mag_squared	complex in, magnitude squared out (float)
gnuradio.blocks.complex_to_real	Produces the real part (as a float0 of a complex stream.
gnuradio.blocks.float_to_char	Convert stream of floats to a stream of char.
gnuradio.blocks.float_to_complex	one or two floats in, complex out
gnuradio.blocks.float_to_int	Convert stream of floats to a stream of ints.
gnuradio.blocks.float_to_short	Convert stream of floats to a stream of shorts.
gnuradio.blocks.float_to_uchar	Convert stream of floats to a stream of unsigned chars.
gnuradio.blocks.int_to_float	Convert stream of ints to a stream of floats.
gnuradio.blocks.interleaved_short_to_complex	Convert stream of interleaved shorts to a stream of complex.
gnuradio.blocks.short_to_char	Convert stream of shorts to a stream of chars.
gnuradio.blocks.short_to_float	Convert stream of shorts to a stream of floats.
gnuradio.blocks.uchar_to_float	Convert stream of unsigned chars to a stream of floats.