def load_file(self, file):
""" Attempts to load the file specified using the InputFile class.
Will autodetect the file format using the file name.
Also opens up the AudioOutput device with the sample
rate and endianness reported by the file.
"""
try:
self.file = InputFile(file)
except:
raise
self.output = AudioOutput(endian = self.file.endian, output = 'oss',
rate = self.file.rate)
self.output.open()
class Player(object):
""" The main player class. This is generally the class you would
instance in order to provide playback.
A general playback loop would be to create a Player, call load_file(file)
and then finally play().
"""
def __init__(self):
self.status = {'cont_playing' : threading.Event(), # check if playing
'finished' : threading.Event(),
'playing' : threading.Event(), # stop or play
'time' : 0}
def load_file(self, file):
""" Attempts to load the file specified using the InputFile class.
Will autodetect the file format using the file name.
Also opens up the AudioOutput device with the sample
rate and endianness reported by the file.
"""
try:
self.file = InputFile(file)
except:
raise
self.output = AudioOutput(endian = self.file.endian, output = 'oss',
rate = self.file.rate)
self.output.open()
def toggle_pause(self):
""" Pauses and unpauses playback """
if self.status['cont_playing'].isSet():
self.status['cont_playing'].clear()
else:
self.status['cont_playing'].set()
def pretty_pos(self):
""" Returns a string representing the current playback
time as mm:ss """
pos = self.file.position
min = int(pos) / 60
sec = int(pos) - min*60
tin = "%02d:%02d" % (min,sec)
pos = self.file.length
min = int(pos) / 60
sec = int(pos) - min*60
tot = "%02d:%02d" % (min,sec)
return (tin,tot)
def pause(self):
""" Pauses. If the playback is paused, does nothing"""
self.status['cont_playing'].clear()
def unpause(self):
""" Unpause. If the playback is unpaused, does nothing """
self.status['cont_playing'].set()
def seek(self):
""" Not yet implemented """
pass
def stop(self):
""" Stops the playback. Will stop the playing thread and close the audio device """
self.status['playing'].clear()
def play(self, wait_start = False, wait_finish = False):
""" Plays the file loaded with load_file. If the wait_start
flag is set, the function waits until the playback thread is
actually playing the file. If wait_finish is set, the function
will not return until the playback is finished. """
self.thread = thread.start_new_thread(self.playth, ())
if wait_finish:
wait_start = True
if wait_start:
self.status['playing'].wait()
if wait_finish:
self.status['finished'].wait()
def playth(self):
""" Internal playback thread. """
self.status['finished'].clear()
self.status['cont_playing'].set()
self.status['playing'].set()
while self.status['playing'].isSet():
self.status['cont_playing'].wait() # wait until playing
(buff, bytes) = self.file.read()
if bytes:
self.output.write(buff, bytes)
else:
break
self.output.close()
self.status['cont_playing'].set()
self.status['playing'].clear()
self.status['finished'].set()
thread.exit()
