masdec_ii.py

"""=================================================="""
"""          Super Hikari Mascon Decoder             """
"""                               2019.Sep.30 7M4MON """
"""=================================================="""

import numpy
import math
from gnuradio import gr

class masdec_ii(gr.sync_block):

    def __init__(self, thres_duration):
        gr.sync_block.__init__(self,
            name="masdec_ii",
            in_sig=[numpy.int32],
            out_sig=[numpy.int32])
        self.on_counter = 0
        self.last_count = 0
        self.last_bit = 0
        self.thres_duration = thres_duration
        

    def work(self, input_items, output_items):
        in0 = input_items[0]
        out = output_items[0]
        
        for det_bit in in0:
            if det_bit == 1 :
                self.on_counter += 1
            else :
                if self.last_bit == 1 :    # edge 1 -> 0
                    self.last_count = self.on_counter
                self.on_counter = 0    # clear counter
            
            self.last_bit = det_bit
            
        out[:] = math.floor(self.last_count / self.thres_duration)
        
        return len(output_items[0])