gistfile1.txt

import pyaudio
import math
import string

PyAudio = pyaudio.PyAudio
p = PyAudio()

morse_code = {'A': '.-', 'B': '-...', 'C': '-.-.',
		'D': '-..', 'E': '.', 'F': '..-.',
		'G': '--.', 'H': '....', 'I': '..',
		'J': '.---', 'K': '-.-', 'L': '.-..',
		'M': '--', 'N': '-.', 'O': '---',
		'P': '.--.', 'Q': '--.-', 'R': '.-.',
		'S': '...', 'T': '-', 'U': '..-',
		'V': '...-', 'W': '.--', 'X': '-..-',
		'Y': '-.--', 'Z': '--..',

		'0': '-----', '1': '.----', '2': '..---',
		'3': '...--', '4': '....-', '5': '.....',
		'6': '-....', '7': '--...', '8': '---..',
		'9': '----.'
		}

def string_to_morse(str):
	strng = string.upper(str)
	morse = ""
	permitted_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"

	for char in strng:
		if char in permitted_chars:
			morse += morse_code[char] + " "

	return morse[:-1]

def play_tone(frequency, offset, length, bit_rate, tone_list = [True], *args):

	if frequency > bit_rate:
		bit_rate = frequency + 100

	tone_lists_list = [tone_list]

	for lst in args:
		tone_lists_list.append(lst)

	highest = 0

	for list in tone_lists_list:
		if len(list) > highest:
			highest = len(list)

	for list in tone_lists_list:
		while len(list) < highest:
			list.append(False)

	frame_num = int(bit_rate * length)
	rest_frames = frame_num / bit_rate
	divider = float(frame_num) / highest
	wave_data = ""

	for x in range(frame_num):
		print str(int(math.ceil(x / divider) -1 )) + " | " + str(highest)
		value = 0

		for index, val_list in enumerate(tone_lists_list):
			if val_list[int(math.ceil(x / divider) -1 )]:
				value += int(math.sin(x/((bit_rate/(frequency + index * offset))/math.pi))*50)


		wave_data += chr(value + 128)

	for x in range(rest_frames):
		wave_data = wave_data + chr(128)


	stream = p.open(format = p.get_format_from_width(1),
					channels = 1,
					rate = bit_rate,
					output = True)
	stream.write(wave_data)
	stream.stop_stream()
	stream.close()

def string_to_tone(frequency, offset, dit_length, strng, *args):

	morse_list = [string_to_morse(strng)]

	for other_strng in args:
		morse_list.append(string_to_morse(other_strng))

	time = 0
	out_list = []

	for morse in morse_list:
		tone_list = []
		own_time = 0

		for char in morse:
			if char == ".":
				tone_list.append(True)
				tone_list.append(False)
				own_time += dit_length
			elif char == "-":
				tone_list.append(True)
				tone_list.append(True)
				tone_list.append(True)
				tone_list.append(False)
				own_time += dit_length * 2
			else:
				tone_list.append(False)
				tone_list.append(False)
				tone_list.append(False)
				tone_list.append(False)
				tone_list.append(False)
				tone_list.append(False)
				tone_list.append(False)
				own_time += dit_length * 7

		out_list.append(tone_list)

		if own_time > time:
			time = own_time

	play_tone(frequency, offset, time, 16000, out_list[0], *out_list[1:])


string_to_tone(1000, 500, 0.05, raw_input("Text #1 to encode: "), raw_input("Text #2 to encode: "))
p.terminate()