1 """Classes for manipulating audio devices (currently only for Sun and SGI)"""
2 from warnings import warnpy3k
3 warnpy3k("the audiodev module has been removed in Python 3.0", stacklevel=2)
6 __all__ = ["error","AudioDev"]
8 class error(Exception):
12 # Private instance variables
13 ## if 0: access frameratelist, nchannelslist, sampwidthlist, oldparams, \
14 ## params, config, inited_outrate, inited_width, \
15 ## inited_nchannels, port, converter, classinited: private
18 frameratelist = nchannelslist = sampwidthlist = None
22 self.frameratelist = [
23 (48000, AL.RATE_48000),
24 (44100, AL.RATE_44100),
25 (32000, AL.RATE_32000),
26 (22050, AL.RATE_22050),
27 (16000, AL.RATE_16000),
28 (11025, AL.RATE_11025),
29 ( 8000, AL.RATE_8000),
31 self.nchannelslist = [
36 self.sampwidthlist = [
45 if not self.classinited:
48 self.params = [AL.OUTPUT_RATE, 0]
49 self.config = al.newconfig()
50 self.inited_outrate = 0
52 self.inited_nchannels = 0
62 al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
69 while self.port.getfilled() > 0:
79 al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
82 def setoutrate(self, rate):
83 for (raw, cooked) in self.frameratelist:
85 self.params[1] = cooked
86 self.inited_outrate = 1
89 raise error, 'bad output rate'
91 def setsampwidth(self, width):
92 for (raw, cooked) in self.sampwidthlist:
94 self.config.setwidth(cooked)
100 self.inited_width = 0
101 self.config.setwidth(AL.SAMPLE_16)
102 self.converter = self.ulaw2lin
104 raise error, 'bad sample width'
106 def setnchannels(self, nchannels):
107 for (raw, cooked) in self.nchannelslist:
109 self.config.setchannels(cooked)
110 self.inited_nchannels = 1
113 raise error, 'bad # of channels'
115 def writeframes(self, data):
116 if not (self.inited_outrate and self.inited_nchannels):
117 raise error, 'params not specified'
120 self.port = al.openport('Python', 'w', self.config)
121 self.oldparams = self.params[:]
122 al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
123 al.setparams(AL.DEFAULT_DEVICE, self.params)
125 data = self.converter(data)
126 self.port.writesamps(data)
130 return self.port.getfilled()
134 def getfillable(self):
136 return self.port.getfillable()
138 return self.config.getqueuesize()
141 ## if 0: access *: private
143 def ulaw2lin(self, data):
145 return audioop.ulaw2lin(data, 2)
147 class Play_Audio_sun:
148 ## if 0: access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
149 ## inited_nchannels, converter: private
155 self.inited_outrate = 0
156 self.inited_width = 0
157 self.inited_nchannels = 0
158 self.converter = None
165 def setoutrate(self, rate):
167 self.inited_outrate = 1
169 def setsampwidth(self, width):
170 self.sampwidth = width
171 self.inited_width = 1
173 def setnchannels(self, nchannels):
174 self.nchannels = nchannels
175 self.inited_nchannels = 1
177 def writeframes(self, data):
178 if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
179 raise error, 'params not specified'
181 import sunaudiodev, SUNAUDIODEV
182 self.port = sunaudiodev.open('w')
183 info = self.port.getinfo()
184 info.o_sample_rate = self.outrate
185 info.o_channels = self.nchannels
186 if self.sampwidth == 0:
188 self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
189 # XXX Hack, hack -- leave defaults
191 info.o_precision = 8 * self.sampwidth
192 info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
193 self.port.setinfo(info)
195 data = self.converter(data)
196 self.port.write(data)
212 return self.port.obufcount()
216 ## # Nobody remembers what this method does, and it's broken. :-(
217 ## def getfillable(self):
218 ## return BUFFERSIZE - self.getfilled()
221 # Dynamically try to import and use a platform specific module.
227 return Play_Audio_sun()
232 raise error, 'no audio device'
234 return Audio_mac.Play_Audio_mac()
236 return Play_Audio_sgi()
243 fn = 'f:just samples:just.aif'
245 af = aifc.open(fn, 'r')
246 print fn, af.getparams()
248 p.setoutrate(af.getframerate())
249 p.setsampwidth(af.getsampwidth())
250 p.setnchannels(af.getnchannels())
251 BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
253 data = af.readframes(BUFSIZ)
259 if __name__ == '__main__':