Python code coverage for Lib/plat-mac/Audio_mac.py

#	count	content
1	n/a	QSIZE = 100000
2	n/a	error='Audio_mac.error'
3	n/a
4	n/a	from warnings import warnpy3k
5	n/a	warnpy3k("In 3.x, the Play_Audio_mac module is removed.", stacklevel=2)
6	n/a
7	n/a	class Play_Audio_mac:
8	n/a
9	n/a	def __init__(self, qsize=QSIZE):
10	n/a	self._chan = None
11	n/a	self._qsize = qsize
12	n/a	self._outrate = 22254
13	n/a	self._sampwidth = 1
14	n/a	self._nchannels = 1
15	n/a	self._gc = []
16	n/a	self._usercallback = None
17	n/a
18	n/a	def __del__(self):
19	n/a	self.stop()
20	n/a	self._usercallback = None
21	n/a
22	n/a	def wait(self):
23	n/a	import time
24	n/a	while self.getfilled():
25	n/a	time.sleep(0.1)
26	n/a	self._chan = None
27	n/a	self._gc = []
28	n/a
29	n/a	def stop(self, quietNow = 1):
30	n/a	##chan = self._chan
31	n/a	self._chan = None
32	n/a	##chan.SndDisposeChannel(1)
33	n/a	self._gc = []
34	n/a
35	n/a	def setoutrate(self, outrate):
36	n/a	self._outrate = outrate
37	n/a
38	n/a	def setsampwidth(self, sampwidth):
39	n/a	self._sampwidth = sampwidth
40	n/a
41	n/a	def setnchannels(self, nchannels):
42	n/a	self._nchannels = nchannels
43	n/a
44	n/a	def writeframes(self, data):
45	n/a	import time
46	n/a	from Carbon.Sound import bufferCmd, callBackCmd, extSH
47	n/a	import struct
48	n/a	import MacOS
49	n/a	if not self._chan:
50	n/a	from Carbon import Snd
51	n/a	self._chan = Snd.SndNewChannel(5, 0, self._callback)
52	n/a	nframes = len(data) / self._nchannels / self._sampwidth
53	n/a	if len(data) != nframes * self._nchannels * self._sampwidth:
54	n/a	raise error, 'data is not a whole number of frames'
55	n/a	while self._gc and \
56	n/a	self.getfilled() + nframes > \
57	n/a	self._qsize / self._nchannels / self._sampwidth:
58	n/a	time.sleep(0.1)
59	n/a	if self._sampwidth == 1:
60	n/a	import audioop
61	n/a	data = audioop.add(data, '\x80'*len(data), 1)
62	n/a	h1 = struct.pack('llHhllbbl',
63	n/a	id(data)+MacOS.string_id_to_buffer,
64	n/a	self._nchannels,
65	n/a	self._outrate, 0,
66	n/a	0,
67	n/a	0,
68	n/a	extSH,
69	n/a	60,
70	n/a	nframes)
71	n/a	h2 = 22*'\0'
72	n/a	h3 = struct.pack('hhlll',
73	n/a	self._sampwidth*8,
74	n/a	0,
75	n/a	0,
76	n/a	0,
77	n/a	0)
78	n/a	header = h1+h2+h3
79	n/a	self._gc.append((header, data))
80	n/a	self._chan.SndDoCommand((bufferCmd, 0, header), 0)
81	n/a	self._chan.SndDoCommand((callBackCmd, 0, 0), 0)
82	n/a
83	n/a	def _callback(self, *args):
84	n/a	del self._gc[0]
85	n/a	if self._usercallback:
86	n/a	self._usercallback()
87	n/a
88	n/a	def setcallback(self, callback):
89	n/a	self._usercallback = callback
90	n/a
91	n/a	def getfilled(self):
92	n/a	filled = 0
93	n/a	for header, data in self._gc:
94	n/a	filled = filled + len(data)
95	n/a	return filled / self._nchannels / self._sampwidth
96	n/a
97	n/a	def getfillable(self):
98	n/a	return (self._qsize / self._nchannels / self._sampwidth) - self.getfilled()
99	n/a
100	n/a	def ulaw2lin(self, data):
101	n/a	import audioop
102	n/a	return audioop.ulaw2lin(data, 2)
103	n/a
104	n/a	def test():
105	n/a	import aifc
106	n/a	import EasyDialogs
107	n/a	fn = EasyDialogs.AskFileForOpen(message="Select an AIFF soundfile", typeList=("AIFF",))
108	n/a	if not fn: return
109	n/a	af = aifc.open(fn, 'r')
110	n/a	print af.getparams()
111	n/a	p = Play_Audio_mac()
112	n/a	p.setoutrate(af.getframerate())
113	n/a	p.setsampwidth(af.getsampwidth())
114	n/a	p.setnchannels(af.getnchannels())
115	n/a	BUFSIZ = 10000
116	n/a	while 1:
117	n/a	data = af.readframes(BUFSIZ)
118	n/a	if not data: break
119	n/a	p.writeframes(data)
120	n/a	print 'wrote', len(data), 'space', p.getfillable()
121	n/a	p.wait()
122	n/a
123	n/a	if __name__ == '__main__':
124	n/a	test()