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samplelib.py
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samplelib.py
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#
# samplelib - Sample playing using mpd
#
import mpd
import os
import random
import actions
registered_samples = []
basedir = ''
def _connect():
mpc = mpd.MPDClient()
mpc.connect("/var/run/mpd/socket", 0)
return mpc
def _disconnect(mpc):
mpc.close()
mpc.disconnect()
class Sample:
def __init__(self, path, loop=False):
global registered_samples
global basedir
fullpath = os.path.join(basedir,path)
self.path = path
self.fullpath = fullpath
self.loop = loop
self.idx = -1
mpc = _connect()
if len(registered_samples) == 0:
mpc.clear()
if os.path.isfile(fullpath):
mpc.add('file://' + fullpath)
registered_samples.append(self)
idx = len(registered_samples)
self.idx = idx-1
else:
print "Warning: invalid sample path '%s'. Ignored." % path
_disconnect(mpc)
print "A glorious instance of the Sample-class was created (%s)" % path
def __repr__(self):
return "Sample('%s', loop=%s)" % (self.path, self.loop)
def run(self):
if self.idx >= 0:
mpc = _connect()
print "Running sample %s" % self
if self.loop:
mpc.repeat(1)
else:
mpc.repeat(0)
mpc.play(self.idx)
_disconnect(mpc)
class RandomSample:
def __init__(self):
pass
def __repr__(self):
return "RandomSample()"
def run(self):
s = random.choice(registered_samples)
s.run()
class SampleList:
def __init__(self, filelist, order='linear'):
self.samples = []
self.filelist = filelist
self.order = order
if order == 'random':
self.next = self.__next_random
else:
if order != 'linear':
print "Warning: unsupported sample list ordering '%s'. Using 'linear' instead." % order
self.next = self.__next_linear
for f in filelist:
self.samples.append(Sample(f))
self.num = len(self.samples)
self.last = -1
def __repr__(self):
return "SampleList(%s, %s)" % (self.filelist, self.order)
def __next_random(self):
return random.choice(self.samples)
def __next_linear(self):
self.last = (self.last+1) % self.num
return self.samples[self.last]
def run(self):
s = self.next()
s.run()
class Volume:
def __init__(self, vol, absolute=False):
self.vol = vol
self.absolute = absolute
def __repr__(self):
return "Volume(%d)" % (self.vol)
def run(self):
mpc = _connect()
oldvol = 0
if not self.absolute:
s = mpc.status()
oldvol = int(s['volume'])
newvol = oldvol + self.vol
if newvol < 0: newvol = 0
if newvol > 100: newvol = 100
print "Setting volume to %s" % newvol
mpc.setvol(newvol)
_disconnect(mpc)
actions.registerActionClass(Sample)
actions.registerActionClass(RandomSample)
actions.registerActionClass(SampleList)
actions.registerActionClass(Volume)