72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
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# Read CD audio data from the SCSI bus and play it back over the
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# built-in speaker or audio jack.
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import al
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import AL
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import cd
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import CD
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def playaudio(port, type, audio):
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## print 'playaudio'
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port.writesamps(audio)
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callbacks = ['audio', 'pnum', 'index', 'ptime', 'atime', 'catalog', 'ident', 'control']
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def callback(port, type, data):
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print 'type', callbacks[type], 'data', `data`
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def main():
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player = cd.open()
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parser = cd.createparser()
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state, track, min, sec, frame, abs_min, abs_sec, abs_frame, \
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total_min, total_sec, total_frame, first, last, scsi_audio, \
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cur_block, dum1, dum2, dum3 = player.getstatus()
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print `state, track, min, sec, frame, abs_min, abs_sec, abs_frame, \
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total_min, total_sec, total_frame, first, last, scsi_audio, \
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cur_block, dum1, dum2, dum3`
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if state <> CD.READY:
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player.close()
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raise 'playcd.Error', 'CD not ready'
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if not scsi_audio:
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player.close()
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raise 'playcd.Error', 'not an audio-capable CD-ROM player'
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for i in range(first, last+1):
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trackinfo = player.gettrackinfo(i)
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print `trackinfo`
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size = player.bestreadsize()
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try:
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oldparams = [AL.OUTPUT_RATE, 0]
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params = oldparams[:]
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al.getparams(AL.DEFAULT_DEVICE, oldparams)
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params[1] = AL.RATE_44100
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al.setparams(AL.DEFAULT_DEVICE, params)
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config = al.newconfig()
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config.setwidth(AL.SAMPLE_16)
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config.setchannels(AL.STEREO)
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port = al.openport('CD Player', 'w', config)
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parser.setcallback(CD.AUDIO, playaudio, port)
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for i in range(1, 8):
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parser.setcallback(i, callback, port)
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parser.removecallback(CD.ATIME)
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parser.removecallback(CD.PTIME)
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while 1:
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frames = player.readda(size)
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if frames == '':
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break
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parser.parseframe(frames)
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except KeyboardInterrupt:
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pass
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al.setparams(AL.DEFAULT_DEVICE, oldparams)
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player.close()
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parser.deleteparser()
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main()
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