Python code coverage for Lib/audiodev.py

#	count	content
1	1	"""Classes for manipulating audio devices (currently only for Sun and SGI)"""
2	1	from warnings import warnpy3k
3	1	warnpy3k("the audiodev module has been removed in Python 3.0", stacklevel=2)
4	1	del warnpy3k
5	n/a
6	1	__all__ = ["error","AudioDev"]
7	n/a
8	2	class error(Exception):
9	1	pass
10	n/a
11	2	class Play_Audio_sgi:
12	n/a	# Private instance variables
13	n/a	## if 0: access frameratelist, nchannelslist, sampwidthlist, oldparams, \
14	n/a	## params, config, inited_outrate, inited_width, \
15	n/a	## inited_nchannels, port, converter, classinited: private
16	n/a
17	1	classinited = 0
18	1	frameratelist = nchannelslist = sampwidthlist = None
19	n/a
20	1	def initclass(self):
21	0	import AL
22	n/a	self.frameratelist = [
23	0	(48000, AL.RATE_48000),
24	0	(44100, AL.RATE_44100),
25	0	(32000, AL.RATE_32000),
26	0	(22050, AL.RATE_22050),
27	0	(16000, AL.RATE_16000),
28	0	(11025, AL.RATE_11025),
29	0	( 8000, AL.RATE_8000),
30	n/a	]
31	n/a	self.nchannelslist = [
32	0	(1, AL.MONO),
33	0	(2, AL.STEREO),
34	0	(4, AL.QUADRO),
35	n/a	]
36	n/a	self.sampwidthlist = [
37	0	(1, AL.SAMPLE_8),
38	0	(2, AL.SAMPLE_16),
39	0	(3, AL.SAMPLE_24),
40	n/a	]
41	0	self.classinited = 1
42	n/a
43	1	def __init__(self):
44	0	import al, AL
45	0	if not self.classinited:
46	0	self.initclass()
47	0	self.oldparams = []
48	0	self.params = [AL.OUTPUT_RATE, 0]
49	0	self.config = al.newconfig()
50	0	self.inited_outrate = 0
51	0	self.inited_width = 0
52	0	self.inited_nchannels = 0
53	0	self.converter = None
54	0	self.port = None
55	0	return
56	n/a
57	1	def __del__(self):
58	0	if self.port:
59	0	self.stop()
60	0	if self.oldparams:
61	0	import al, AL
62	0	al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
63	0	self.oldparams = []
64	n/a
65	1	def wait(self):
66	0	if not self.port:
67	0	return
68	0	import time
69	0	while self.port.getfilled() > 0:
70	0	time.sleep(0.1)
71	0	self.stop()
72	n/a
73	1	def stop(self):
74	0	if self.port:
75	0	self.port.closeport()
76	0	self.port = None
77	0	if self.oldparams:
78	0	import al, AL
79	0	al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
80	0	self.oldparams = []
81	n/a
82	1	def setoutrate(self, rate):
83	0	for (raw, cooked) in self.frameratelist:
84	0	if rate == raw:
85	0	self.params[1] = cooked
86	0	self.inited_outrate = 1
87	0	break
88	n/a	else:
89	0	raise error, 'bad output rate'
90	n/a
91	1	def setsampwidth(self, width):
92	0	for (raw, cooked) in self.sampwidthlist:
93	0	if width == raw:
94	0	self.config.setwidth(cooked)
95	0	self.inited_width = 1
96	0	break
97	n/a	else:
98	0	if width == 0:
99	0	import AL
100	0	self.inited_width = 0
101	0	self.config.setwidth(AL.SAMPLE_16)
102	0	self.converter = self.ulaw2lin
103	n/a	else:
104	0	raise error, 'bad sample width'
105	n/a
106	1	def setnchannels(self, nchannels):
107	0	for (raw, cooked) in self.nchannelslist:
108	0	if nchannels == raw:
109	0	self.config.setchannels(cooked)
110	0	self.inited_nchannels = 1
111	0	break
112	n/a	else:
113	0	raise error, 'bad # of channels'
114	n/a
115	1	def writeframes(self, data):
116	0	if not (self.inited_outrate and self.inited_nchannels):
117	0	raise error, 'params not specified'
118	0	if not self.port:
119	0	import al, AL
120	0	self.port = al.openport('Python', 'w', self.config)
121	0	self.oldparams = self.params[:]
122	0	al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
123	0	al.setparams(AL.DEFAULT_DEVICE, self.params)
124	0	if self.converter:
125	0	data = self.converter(data)
126	0	self.port.writesamps(data)
127	n/a
128	1	def getfilled(self):
129	0	if self.port:
130	0	return self.port.getfilled()
131	n/a	else:
132	0	return 0
133	n/a
134	1	def getfillable(self):
135	0	if self.port:
136	0	return self.port.getfillable()
137	n/a	else:
138	0	return self.config.getqueuesize()
139	n/a
140	n/a	# private methods
141	n/a	## if 0: access *: private
142	n/a
143	1	def ulaw2lin(self, data):
144	0	import audioop
145	0	return audioop.ulaw2lin(data, 2)
146	n/a
147	2	class Play_Audio_sun:
148	n/a	## if 0: access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
149	n/a	## inited_nchannels, converter: private
150	n/a
151	1	def __init__(self):
152	0	self.outrate = 0
153	0	self.sampwidth = 0
154	0	self.nchannels = 0
155	0	self.inited_outrate = 0
156	0	self.inited_width = 0
157	0	self.inited_nchannels = 0
158	0	self.converter = None
159	0	self.port = None
160	0	return
161	n/a
162	1	def __del__(self):
163	0	self.stop()
164	n/a
165	1	def setoutrate(self, rate):
166	0	self.outrate = rate
167	0	self.inited_outrate = 1
168	n/a
169	1	def setsampwidth(self, width):
170	0	self.sampwidth = width
171	0	self.inited_width = 1
172	n/a
173	1	def setnchannels(self, nchannels):
174	0	self.nchannels = nchannels
175	0	self.inited_nchannels = 1
176	n/a
177	1	def writeframes(self, data):
178	0	if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
179	0	raise error, 'params not specified'
180	0	if not self.port:
181	0	import sunaudiodev, SUNAUDIODEV
182	0	self.port = sunaudiodev.open('w')
183	0	info = self.port.getinfo()
184	0	info.o_sample_rate = self.outrate
185	0	info.o_channels = self.nchannels
186	0	if self.sampwidth == 0:
187	0	info.o_precision = 8
188	0	self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
189	n/a	# XXX Hack, hack -- leave defaults
190	n/a	else:
191	0	info.o_precision = 8 * self.sampwidth
192	0	info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
193	0	self.port.setinfo(info)
194	0	if self.converter:
195	0	data = self.converter(data)
196	0	self.port.write(data)
197	n/a
198	1	def wait(self):
199	0	if not self.port:
200	0	return
201	0	self.port.drain()
202	0	self.stop()
203	n/a
204	1	def stop(self):
205	0	if self.port:
206	0	self.port.flush()
207	0	self.port.close()
208	0	self.port = None
209	n/a
210	1	def getfilled(self):
211	0	if self.port:
212	0	return self.port.obufcount()
213	n/a	else:
214	0	return 0
215	n/a
216	n/a	## # Nobody remembers what this method does, and it's broken. :-(
217	n/a	## def getfillable(self):
218	n/a	## return BUFFERSIZE - self.getfilled()
219	n/a
220	1	def AudioDev():
221	n/a	# Dynamically try to import and use a platform specific module.
222	0	try:
223	0	import al
224	0	except ImportError:
225	0	try:
226	0	import sunaudiodev
227	0	return Play_Audio_sun()
228	0	except ImportError:
229	0	try:
230	0	import Audio_mac
231	0	except ImportError:
232	0	raise error, 'no audio device'
233	n/a	else:
234	0	return Audio_mac.Play_Audio_mac()
235	n/a	else:
236	0	return Play_Audio_sgi()
237	n/a
238	1	def test(fn = None):
239	0	import sys
240	0	if sys.argv[1:]:
241	0	fn = sys.argv[1]
242	n/a	else:
243	0	fn = 'f:just samples:just.aif'
244	0	import aifc
245	0	af = aifc.open(fn, 'r')
246	0	print fn, af.getparams()
247	0	p = AudioDev()
248	0	p.setoutrate(af.getframerate())
249	0	p.setsampwidth(af.getsampwidth())
250	0	p.setnchannels(af.getnchannels())
251	0	BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
252	0	while 1:
253	0	data = af.readframes(BUFSIZ)
254	0	if not data: break
255	0	print len(data)
256	0	p.writeframes(data)
257	0	p.wait()
258	n/a
259	1	if __name__ == '__main__':
260	0	test()