+++ /dev/null
-error = 'audiodev.error'
-
-class Play_Audio_sgi:
- # Private instance variables
- access frameratelist, nchannelslist, sampwidthlist, oldparams, \
- params, config, inited_outrate, inited_width, \
- inited_nchannels, port, converter, classinited: private
-
- classinited = 0
- frameratelist = nchannelslist = sampwidthlist = None
-
- def initclass(self):
- import AL
- Play_Audio_sgi.frameratelist = [
- (48000, AL.RATE_48000),
- (44100, AL.RATE_44100),
- (32000, AL.RATE_32000),
- (22050, AL.RATE_22050),
- (16000, AL.RATE_16000),
- (11025, AL.RATE_11025),
- ( 8000, AL.RATE_8000),
- ]
- Play_Audio_sgi.nchannelslist = [
- (1, AL.MONO),
- (2, AL.STEREO),
- ]
- Play_Audio_sgi.sampwidthlist = [
- (1, AL.SAMPLE_8),
- (2, AL.SAMPLE_16),
- (3, AL.SAMPLE_24),
- ]
- Play_Audio_sgi.classinited = 1
-
- def __init__(self):
- import al, AL
- if not self.classinited:
- self.initclass()
- self.oldparams = []
- self.params = [AL.OUTPUT_RATE, 0]
- self.config = al.newconfig()
- self.inited_outrate = 0
- self.inited_width = 0
- self.inited_nchannels = 0
- self.converter = None
- self.port = None
- return
-
- def __del__(self):
- if self.port:
- self.stop()
- if self.oldparams:
- import al, AL
- al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
- self.oldparams = []
-
- def wait(self):
- if not self.port:
- return
- import time
- while self.port.getfilled() > 0:
- time.sleep(0.1)
- self.stop()
-
- def stop(self):
- if self.port:
- self.port.closeport()
- self.port = None
- if self.oldparams:
- import al, AL
- al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
- self.oldparams = []
-
- def setoutrate(self, rate):
- for (raw, cooked) in self.frameratelist:
- if rate == raw:
- self.params[1] = cooked
- self.inited_outrate = 1
- break
- else:
- raise error, 'bad output rate'
-
- def setsampwidth(self, width):
- for (raw, cooked) in self.sampwidthlist:
- if width == raw:
- self.config.setwidth(cooked)
- self.inited_width = 1
- break
- else:
- if width == 0:
- import AL
- self.inited_width = 0
- self.config.setwidth(AL.SAMPLE_16)
- self.converter = self.ulaw2lin
- else:
- raise error, 'bad sample width'
-
- def setnchannels(self, nchannels):
- for (raw, cooked) in self.nchannelslist:
- if nchannels == raw:
- self.config.setchannels(cooked)
- self.inited_nchannels = 1
- break
- else:
- raise error, 'bad # of channels'
-
- def writeframes(self, data):
- if not (self.inited_outrate and self.inited_nchannels):
- raise error, 'params not specified'
- if not self.port:
- import al, AL
- self.port = al.openport('Python', 'w', self.config)
- self.oldparams = self.params[:]
- al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
- al.setparams(AL.DEFAULT_DEVICE, self.params)
- if self.converter:
- data = self.converter(data)
- self.port.writesamps(data)
-
- def getfilled(self):
- if self.port:
- return self.port.getfilled()
- else:
- return 0
-
- def getfillable(self):
- if self.port:
- return self.port.getfillable()
- else:
- return self.config.getqueuesize()
-
- # private methods
- access *: private
-
- def ulaw2lin(self, data):
- import audioop
- return audioop.ulaw2lin(data, 2)
-
-class Play_Audio_sun:
- access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
- inited_nchannels, converter: private
-
- def __init__(self):
- self.outrate = 0
- self.sampwidth = 0
- self.nchannels = 0
- self.inited_outrate = 0
- self.inited_width = 0
- self.inited_nchannels = 0
- self.converter = None
- self.port = None
- return
-
- def __del__(self):
- self.stop()
-
- def setoutrate(self, rate):
- self.outrate = rate
- self.inited_outrate = 1
-
- def setsampwidth(self, width):
- self.sampwidth = width
- self.inited_width = 1
-
- def setnchannels(self, nchannels):
- self.nchannels = nchannels
- self.inited_nchannels = 1
-
- def writeframes(self, data):
- if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
- raise error, 'params not specified'
- if not self.port:
- import sunaudiodev, SUNAUDIODEV
- self.port = sunaudiodev.open('w')
- info = self.port.getinfo()
- info.o_sample_rate = self.outrate
- info.o_channels = self.nchannels
- if self.sampwidth == 0:
- info.o_precision = 8
- self.o_encoding = ENCODING_ULAW
- else:
- info.o_precision = 8 * self.sampwidth
- info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
- self.port.setinfo(info)
- if self.converter:
- data = self.converter(data)
- self.port.write(data)
-
- def wait(self):
- if not self.port:
- return
- self.port.drain()
- self.stop()
-
- def stop(self):
- if self.port:
- self.port.flush()
- self.port.close()
- self.port = None
-
- def getfilled(self):
- if self.port:
- return self.port.obufcount()
- else:
- return 0
-
- def getfillable(self):
- return BUFFERSIZE - self.getfilled()
-
-def AudioDev():
- try:
- import al
- return Play_Audio_sgi()
- except ImportError:
- try:
- import sunaudiodev
- return Play_Audio_sun()
- except ImportError:
- try:
- import Audio_mac
- return Audio_mac.Play_Audio_mac()
- except ImportError:
- raise error, 'no audio device'
-
-def test(fn = 'f:just samples:just.aif'):
- import aifc
- af = aifc.open(fn, 'r')
- print fn, af.getparams()
- p = AudioDev()
- p.setoutrate(af.getframerate())
- p.setsampwidth(af.getsampwidth())
- p.setnchannels(af.getnchannels())
- BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
- while 1:
- data = af.readframes(BUFSIZ)
- if not data: break
- print len(data)
- p.writeframes(data)
- p.wait()
-
-if __name__ == '__main__':
- test()
projects / python / commitdiff