PWN::FFI::Liquid

Thin liquid-dsp binding. Provides the high-level DSP building blocks that PWN::SDR::Decoder::* needs beyond pure-Ruby primitives: FM / frequency demodulation, multi-stage arbitrary resampling, and Kaiser FIR filters. Opaque liquid handles are held as FFI::Pointer and always freed in an ensure — no compile step, no shells. If libliquid is absent .available? is false and DSP falls back to pure Ruby. Complex samples use the GCC float _Complex ABI: interleaved float[2] (re, im) per sample, which is how liquid_float_complex is laid out under LIQUID_DEFINE_COMPLEX.

When to use

Call PWN::FFI::Liquid from pwn_eval when the task needs this module. Do not reimplement it in shell.

Methodologies

Generated from pwn/ffi/liquid.rb. Prefer the public class methods below. Class methods take (opts = {}) and read opts.

How to call

PWN::FFI::Liquid.help
PWN::FFI::Liquid.available(opts)

Public methods

• available
• freq_demod
• resample
• fir_kaiser
• dc_block
• resample_iq
• mix_down
• gmsk_demod
• mfsk_demod
• authors
• help
• available?
• firfilt_rrrf_create_dc_blocker
• firfilt_rrrf_create_kaiser
• firfilt_rrrf_destroy
• firfilt_rrrf_execute_block
• firfilt_rrrf_reset
• freqdem_create
• freqdem_demodulate_block
• freqdem_destroy
• freqdem_print
• freqdem_reset
• fskdem_create
• fskdem_demodulate
• fskdem_destroy
• gmskdem_create
• gmskdem_demodulate
• gmskdem_destroy
• gmskdem_reset
• load_error
• msresamp_crcf_create
• msresamp_crcf_destroy
• msresamp_crcf_execute
• msresamp_rrrf_create
• msresamp_rrrf_destroy
• msresamp_rrrf_execute
• msresamp_rrrf_get_delay
• msresamp_rrrf_get_num_output
• msresamp_rrrf_get_rate
• msresamp_rrrf_reset
• nco_crcf_create
• nco_crcf_destroy
• nco_crcf_mix_block_down
• nco_crcf_set_frequency

Source

pwn/ffi/liquid.rb

Verification

PWN::FFI::Liquid.respond_to?(:available) after the module is loaded. Read the source for parameter names.