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