def unprepsteg(recvd):
# return an array of 6 bit symbols representing a steg message from the supplied recvd packet
# recvd packet is a numpy array of range 20 containing a prepped or received steg packet
# will do Reed Solomon decoding
# WARNING!!! - recvd is NOT preserved during this call remember to save
# and restore it
output = numpy.array(range(12), dtype=numpy.int32) # array to return
JT65.unprepsteg(recvd, output)
return output
def unprepsteg(recvd):
# return an array of 6 bit symbols representing a steg message from the supplied recvd packet
# recvd packet is a numpy array of range 20 containing a prepped or received steg packet
# will do Reed Solomon decoding
# WARNING!!! - recvd is NOT preserved during this call remember to save
# and restore it
output = numpy.array(range(12), dtype=numpy.int32) # array to return
JT65.unprepsteg(recvd, output)
return output
def prepsteg(message):
# return an array of 6 bit symbols preped for transmission on the channel as a 20 symbol steg packet
# will do Reed Solomon coding
output = numpy.array(range(20), dtype=numpy.int32)
JT65.prepsteg(message, output)
return output
def prepmsg(message):
# return an array of 6 bit symbols preped for transmission on the channel and a JT65 packet
# will do Reed Solomon coding, graycode and interleave functions
output = numpy.array(range(63), dtype=numpy.int32)
JT65.prepmsg(message, output)
return output
def decode(recarray):
# returns a string decoded from the 12 element recarray received
output = numpy.array(range(22), 'c')
JT65.jt65unpackmsg(recarray, output)
retstr = ''.join(output)
return retstr
def encode(message):
# return a numpy array which is the 13 element JT65 message symbols
output = numpy.array(range(12), dtype=numpy.int32) # array to return
JT65.jt65packmsg(message, output)
return output
def prepsteg(message):
# return an array of 6 bit symbols preped for transmission on the channel as a 20 symbol steg packet
# will do Reed Solomon coding
output = numpy.array(range(20), dtype=numpy.int32)
JT65.prepsteg(message, output)
return output
def prepmsg(message):
# return an array of 6 bit symbols preped for transmission on the channel and a JT65 packet
# will do Reed Solomon coding, graycode and interleave functions
output = numpy.array(range(63), dtype=numpy.int32)
JT65.prepmsg(message, output)
return output
def decode(recarray):
# returns a string decoded from the 12 element recarray received
output = numpy.array(range(22), 'c')
JT65.jt65unpackmsg(recarray, output)
retstr = ''.join(output)
return retstr
def encode(message):
# return a numpy array which is the 13 element JT65 message symbols
output = numpy.array(range(12), dtype=numpy.int32) # array to return
JT65.jt65packmsg(message, output)
return output