Python code coverage for Mac/Demo/sound/morselib.py

#	count	content
1	n/a	"""Translate text strings to Morse code"""
2	n/a
3	n/a	FRAMERATE = 22050
4	n/a	SAMPWIDTH = 2
5	n/a
6	n/a	BASEFREQ = 441
7	n/a	OCTAVE = 2
8	n/a
9	n/a	DOT = 30
10	n/a	DAH = 80
11	n/a
12	n/a	morsetab = {
13	n/a	'a': '.-',
14	n/a	'b': '-...',
15	n/a	'c': '-.-.',
16	n/a	'd': '-..',
17	n/a	'e': '.',
18	n/a	'f': '..-.',
19	n/a	'g': '--.',
20	n/a	'h': '....',
21	n/a	'i': '..',
22	n/a	'j': '.---',
23	n/a	'k': '-.-',
24	n/a	'l': '.-..',
25	n/a	'm': '--',
26	n/a	'n': '-.',
27	n/a	'o': '---',
28	n/a	'p': '.--.',
29	n/a	'q': '--.-',
30	n/a	'r': '.-.',
31	n/a	's': '...',
32	n/a	't': '-',
33	n/a	'u': '..-',
34	n/a	'v': '...-',
35	n/a	'w': '.--',
36	n/a	'x': '-..-',
37	n/a	'y': '-.--',
38	n/a	'z': '--..',
39	n/a	'0': '-----',
40	n/a	'1': '.----',
41	n/a	'2': '..---',
42	n/a	'3': '...--',
43	n/a	'4': '....-',
44	n/a	'5': '.....',
45	n/a	'6': '-....',
46	n/a	'7': '--...',
47	n/a	'8': '---..',
48	n/a	'9': '----.',
49	n/a	',': '--..--',
50	n/a	'.': '.-.-.-',
51	n/a	'?': '..--..',
52	n/a	';': '-.-.-.',
53	n/a	':': '---...',
54	n/a	"'": '.----.',
55	n/a	'-': '-....-',
56	n/a	'/': '-..-.',
57	n/a	'(': '-.--.-',
58	n/a	')': '-.--.-', # XXX same as code for '(' ???
59	n/a	'_': '..--.-',
60	n/a	' ': ' '
61	n/a	}
62	n/a
63	n/a	def morsecode(s):
64	n/a	from string import lower
65	n/a	m = ''
66	n/a	for c in s:
67	n/a	c = lower(c)
68	n/a	if morsetab.has_key(c):
69	n/a	c = morsetab[c] + ' '
70	n/a	else:
71	n/a	c = '? '
72	n/a	m = m + c
73	n/a	return m
74	n/a
75	n/a
76	n/a	class BaseMorse:
77	n/a	"base class for morse transmissions"
78	n/a
79	n/a	def __init__(self):
80	n/a	"constructor"
81	n/a	self.dots = DOT
82	n/a	self.dahs = DAH
83	n/a
84	n/a	def noise(self, duration):
85	n/a	"beep for given duration"
86	n/a	pass
87	n/a
88	n/a	def pause(self, duration):
89	n/a	"pause for given duration"
90	n/a	pass
91	n/a
92	n/a	def dot(self):
93	n/a	"short beep"
94	n/a	self.noise(self.dots)
95	n/a
96	n/a	def dah(self):
97	n/a	"long beep"
98	n/a	self.noise(self.dahs)
99	n/a
100	n/a	def pdot(self):
101	n/a	"pause as long as a dot"
102	n/a	self.pause(self.dots)
103	n/a
104	n/a	def pdah(self):
105	n/a	"pause as long as a dah"
106	n/a	self.pause(self.dahs)
107	n/a
108	n/a	def sendmorse(self, s):
109	n/a	for c in s:
110	n/a	if c == '.': self.dot()
111	n/a	elif c == '-': self.dah()
112	n/a	else: self.pdah()
113	n/a	self.pdot()
114	n/a
115	n/a	def sendascii(self, s):
116	n/a	self.sendmorse(morsecode(s))
117	n/a
118	n/a	def send(self, s):
119	n/a	self.sendascii(s)
120	n/a
121	n/a
122	n/a	import Audio_mac
123	n/a	class MyAudio(Audio_mac.Play_Audio_mac):
124	n/a	def _callback(self, *args):
125	n/a	if hasattr(self, 'usercallback'): self.usercallback()
126	n/a	apply(Audio_mac.Play_Audio_mac._callback, (self,) + args)
127	n/a
128	n/a
129	n/a	class MacMorse(BaseMorse):
130	n/a	"Mac specific class to play Morse code"
131	n/a
132	n/a	def __init__(self):
133	n/a	BaseMorse.__init__(self)
134	n/a	self.dev = MyAudio()
135	n/a	self.dev.setoutrate(FRAMERATE)
136	n/a	self.dev.setsampwidth(SAMPWIDTH)
137	n/a	self.dev.setnchannels(1)
138	n/a	self.dev.usercallback = self.usercallback
139	n/a	sinewave = ''
140	n/a	n = int(FRAMERATE / BASEFREQ)
141	n/a	octave = OCTAVE
142	n/a	from math import sin, pi
143	n/a	for i in range(n):
144	n/a	val = int(sin(2 * pi * i * octave / n) * 0x7fff)
145	n/a	sample = chr((val >> 8) & 255) + chr(val & 255)
146	n/a	sinewave = sinewave + sample[:SAMPWIDTH]
147	n/a	self.sinewave = sinewave
148	n/a	self.silence = '\0' * (n*SAMPWIDTH)
149	n/a	self.morsequeue = ''
150	n/a
151	n/a	def __del__(self):
152	n/a	self.close()
153	n/a
154	n/a	def close(self):
155	n/a	self.dev = None
156	n/a
157	n/a	def pause(self, duration):
158	n/a	self.dev.writeframes(self.silence * duration)
159	n/a
160	n/a	def noise(self, duration):
161	n/a	self.dev.writeframes(self.sinewave * duration)
162	n/a
163	n/a	def sendmorse(self, s):
164	n/a	self.morsequeue = self.morsequeue + s
165	n/a	self.dev.usercallback()
166	n/a	self.dev.usercallback()
167	n/a	self.dev.usercallback()
168	n/a
169	n/a	def usercallback(self):
170	n/a	if self.morsequeue:
171	n/a	c, self.morsequeue = self.morsequeue[0], self.morsequeue[1:]
172	n/a	if c == '.': self.dot()
173	n/a	elif c == '-': self.dah()
174	n/a	else: self.pdah()
175	n/a	self.pdot()
176	n/a
177	n/a
178	n/a	def test():
179	n/a	m = MacMorse()
180	n/a	while 1:
181	n/a	try:
182	n/a	line = raw_input('Morse line: ')
183	n/a	except (EOFError, KeyboardInterrupt):
184	n/a	break
185	n/a	m.send(line)
186	n/a	while m.morsequeue: pass
187	n/a
188	n/a	test()