/usr/share/pyshared/pyolib/players.py is in python-pyo 0.6.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Play soundfiles from the disk.
SfMarkerXXX objects use markers features (store in the header) from
an AIFF file to create more specific reading patterns.
"""
"""
Copyright 2010 Olivier Belanger
This file is part of pyo, a python module to help digital signal
processing script creation.
pyo is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
pyo is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pyo. If not, see <http://www.gnu.org/licenses/>.
"""
from _core import *
from _maps import *
import aifc
from types import ListType
class SfPlayer(PyoObject):
"""
Soundfile player.
Reads audio data from a file using one of several available interpolation
types. User can alter its pitch with the `speed` attribute. The object
takes care of sampling rate conversion to match the Server sampling
rate setting.
:Parent: :py:class:`PyoObject`
:Args:
path : string
Full path name of the sound to read.
speed : float or PyoObject, optional
Transpose the pitch of input sound by this factor.
Defaults to 1.
1 is the original pitch, lower values play sound slower, and higher
values play sound faster.
Negative values results in playing sound backward.
Although the `speed` attribute accepts audio
rate signal, its value is updated only once per buffer size.
loop : bool, optional
If set to True, sound will play in loop. Defaults to False.
offset : float, optional
Time in seconds of input sound to be skipped, assuming speed = 1.
Defaults to 0.
interp : int, optional
Interpolation type. Defaults to 2.
1. no interpolation
2. linear
3. cosinus
4. cubic
.. note::
SfPlayer will sends a trigger signal at the end of the playback if
loop is off or any time it wraps around if loop is on. User can
retrieve the trigger streams by calling obj['trig']:
>>> sf = SfPlayer(SNDS_PATH + "/transparent.aif").out()
>>> trig = TrigRand(sf['trig'])
>>> s = Server().boot()
>>> s.start()
>>> snd = SNDS_PATH + "/transparent.aif"
>>> sf = SfPlayer(snd, speed=[.75,.8], loop=True, mul=.3).out()
"""
def __init__(self, path, speed=1, loop=False, offset=0, interp=2, mul=1, add=0):
PyoObject.__init__(self, mul, add)
self._path = path
self._speed = speed
self._loop = loop
self._offset = offset
self._interp = interp
path, speed, loop, offset, interp, mul, add, lmax = convertArgsToLists(path, speed, loop, offset, interp, mul, add)
self._base_players = []
self._base_objs = []
_trig_objs_tmp = []
for i in range(lmax):
_snd_size, _dur, _snd_sr, _snd_chnls, _format, _type = sndinfo(path[0])
self._base_players.append(SfPlayer_base(wrap(path,i), wrap(speed,i), wrap(loop,i), wrap(offset,i), wrap(interp,i)))
for j in range(_snd_chnls):
self._base_objs.append(SfPlay_base(self._base_players[-1], j, wrap(mul,i), wrap(add,i)))
_trig_objs_tmp.append(TriggerDummy_base(self._base_players[-1]))
self._trig_objs = Dummy(_trig_objs_tmp)
def setPath(self, path):
"""
Sets a new sound to read.
The number of channels of the new sound must match those
of the sound loaded at initialization time.
:Args:
path : string
Full path of the new sound.
"""
if type(self._path) == ListType:
curNchnls = sndinfo(self._path[0])[3]
else:
curNchnls = sndinfo(self._path)[3]
if type(path) == ListType:
p = path[0]
else:
p = path
try:
_snd_size, _dur, _snd_sr, _snd_chnls, _format, _type = sndinfo(p)
except:
return
if _snd_chnls != curNchnls:
print "Soundfile must contains exactly %d channels." % curNchnls
return
self._path = path
path, lmax = convertArgsToLists(path)
[obj.setSound(wrap(path,i)) for i, obj in enumerate(self._base_players)]
def setSound(self, path):
"""
Sets a new sound to read.
The number of channels of the new sound must match those
of the sound loaded at initialization time.
:Args:
path : string
Full path of the new sound.
"""
self.setPath(path)
def setSpeed(self, x):
"""
Replace the `speed` attribute.
:Args:
x : float or PyoObject
new `speed` attribute.
"""
self._speed = x
x, lmax = convertArgsToLists(x)
[obj.setSpeed(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def setLoop(self, x):
"""
Replace the `loop` attribute.
:Args:
x : bool {True, False}
new `loop` attribute.
"""
self._loop = x
x, lmax = convertArgsToLists(x)
for i, obj in enumerate(self._base_players):
if wrap(x,i): obj.setLoop(1)
else: obj.setLoop(0)
def setOffset(self, x):
"""
Replace the `offset` attribute.
:Args:
x : float
new `offset` attribute.
"""
self._offset = x
x, lmax = convertArgsToLists(x)
[obj.setOffset(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def setInterp(self, x):
"""
Replace the `interp` attribute.
:Args:
x : int {1, 2, 3, 4}
new `interp` attribute.
"""
self._interp = x
x, lmax = convertArgsToLists(x)
[obj.setInterp(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def ctrl(self, map_list=None, title=None, wxnoserver=False):
self._map_list = [SLMap(-2., 2., 'lin', 'speed', self._speed), SLMapMul(self._mul)]
PyoObject.ctrl(self, map_list, title, wxnoserver)
@property
def path(self):
"""string. Full path of the sound."""
return self._path
@path.setter
def path(self, x): self.setPath(x)
@property
def sound(self):
"""string. Alias to the `path` attribute."""
return self._path
@sound.setter
def sound(self, x): self.setPath(x)
@property
def speed(self):
"""float or PyoObject. Transposition factor."""
return self._speed
@speed.setter
def speed(self, x): self.setSpeed(x)
@property
def loop(self):
"""bool. Looping mode."""
return self._loop
@loop.setter
def loop(self, x): self.setLoop(x)
@property
def offset(self):
"""float. Time, in seconds, of the first sample to read."""
return self._offset
@offset.setter
def offset(self, x): self.setOffset(x)
@property
def interp(self):
"""int {1, 2, 3, 4}. Interpolation method."""
return self._interp
@interp.setter
def interp(self, x): self.setInterp(x)
class SfMarkerShuffler(PyoObject):
"""
AIFF with markers soundfile shuffler.
Reads audio data from a AIFF file using one of several available
interpolation types. User can alter its pitch with the `speed`
attribute. The object takes care of sampling rate conversion to
match the Server sampling rate setting.
The reading pointer randomly choose a marker (from the MARK chunk
in the header of the AIFF file) as its starting point and reads
the samples until it reaches the following marker. Then, it choose
another marker and reads from the new position and so on...
:Parent: :py:class:`PyoObject`
:Args:
path : string
Full path name of the sound to read. Can't e changed after
initialization.
speed : float or PyoObject, optional
Transpose the pitch of input sound by this factor.
Defaults to 1.
1 is the original pitch, lower values play sound slower, and higher
values play sound faster.
Negative values results in playing sound backward.
Although the `speed` attribute accepts audio
rate signal, its value is updated only once per buffer size.
interp : int, optional
Choice of the interpolation method. Defaults to 2.
1. no interpolation
2. linear
3. cosinus
4. cubic
>>> s = Server().boot()
>>> s.start()
>>> sf = SfMarkerShuffler(SNDS_PATH + "/transparent.aif", speed=[1,1], mul=.3).out()
"""
def __init__(self, path, speed=1, interp=2, mul=1, add=0):
PyoObject.__init__(self, mul, add)
self._speed = speed
self._interp = interp
path, speed, interp, mul, add, lmax = convertArgsToLists(path, speed, interp, mul, add)
self._base_players = []
self._base_objs = []
self._snd_size, self._dur, self._snd_sr, self._snd_chnls, _format, _type = sndinfo(path[0])
for i in range(lmax):
try:
sf = aifc.open(wrap(path,i))
markerstmp = sf.getmarkers()
sf.close()
self._markers = [m[1] for m in markerstmp]
except:
self._markers = []
self._base_players.append(SfMarkerShuffler_base(wrap(path,i), self._markers, wrap(speed,i), wrap(interp,i)))
for i in range(lmax * self._snd_chnls):
j = i / self._snd_chnls
self._base_objs.append(SfMarkerShuffle_base(wrap(self._base_players,j), i % self._snd_chnls, wrap(mul,j), wrap(add,j)))
def setSpeed(self, x):
"""
Replace the `speed` attribute.
:Args:
x : float or PyoObject
new `speed` attribute.
"""
self._speed = x
x, lmax = convertArgsToLists(x)
[obj.setSpeed(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def setInterp(self, x):
"""
Replace the `interp` attribute.
:Args:
x : int {1, 2, 3, 4}
new `interp` attribute.
"""
self._interp = x
x, lmax = convertArgsToLists(x)
[obj.setInterp(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def getMarkers(self):
"""
Returns a list of marker time values in samples.
"""
return self._markers
def ctrl(self, map_list=None, title=None, wxnoserver=False):
self._map_list = [SLMap(0.01, 2., 'lin', 'speed', self._speed), SLMapMul(self._mul)]
PyoObject.ctrl(self, map_list, title, wxnoserver)
@property
def speed(self):
"""float or PyoObject. Transposition factor."""
return self._speed
@speed.setter
def speed(self, x): self.setSpeed(x)
@property
def interp(self):
"""int {1, 2, 3, 4}. Interpolation method."""
return self._interp
@interp.setter
def interp(self, x): self.setInterp(x)
class SfMarkerLooper(PyoObject):
"""
AIFF with markers soundfile looper.
Reads audio data from a AIFF file using one of several available
interpolation types. User can alter its pitch with the `speed`
attribute. The object takes care of sampling rate conversion to
match the Server sampling rate setting.
The reading pointer loops a specific marker (from the MARK chunk
in the header of the AIFF file) until it received a new integer
in the `mark` attribute.
:Parent: :py:class:`PyoObject`
:Args:
path : string
Full path name of the sound to read.
speed : float or PyoObject, optional
Transpose the pitch of input sound by this factor.
Defaults to 1.
1 is the original pitch, lower values play sound slower, and higher
values play sound faster.
Negative values results in playing sound backward.
Although the `speed` attribute accepts audio
rate signal, its value is updated only once per buffer size.
mark : float or PyoObject, optional
Integer denoting the marker to loop, in the range
0 -> len(getMarkers()). Defaults to 0.
interp : int, optional
Choice of the interpolation method. Defaults to 2.
1. no interpolation
2. linear
3. cosinus
4. cubic
>>> s = Server().boot()
>>> s.start()
>>> a = SfMarkerLooper(SNDS_PATH + '/transparent.aif', speed=[.999,1], mul=.3).out()
>>> rnd = RandInt(len(a.getMarkers()), 2)
>>> a.mark = rnd
"""
def __init__(self, path, speed=1, mark=0, interp=2, mul=1, add=0):
PyoObject.__init__(self, mul, add)
self._speed = speed
self._mark = mark
self._interp = interp
path, speed, mark, interp, mul, add, lmax = convertArgsToLists(path, speed, mark, interp, mul, add)
self._base_players = []
self._base_objs = []
self._snd_size, self._dur, self._snd_sr, self._snd_chnls, _format, _type = sndinfo(path[0])
for i in range(lmax):
try:
sf = aifc.open(wrap(path,i))
markerstmp = sf.getmarkers()
sf.close()
self._markers = [m[1] for m in markerstmp]
except:
self._markers = []
self._base_players.append(SfMarkerLooper_base(wrap(path,i), self._markers, wrap(speed,i), wrap(mark,i), wrap(interp,i)))
for i in range(lmax * self._snd_chnls):
j = i / self._snd_chnls
self._base_objs.append(SfMarkerLoop_base(wrap(self._base_players,j), i % self._snd_chnls, wrap(mul,j), wrap(add,j)))
def setSpeed(self, x):
"""
Replace the `speed` attribute.
:Args:
x : float or PyoObject
new `speed` attribute.
"""
self._speed = x
x, lmax = convertArgsToLists(x)
[obj.setSpeed(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def setMark(self, x):
"""
Replace the `mark` attribute.
:Args:
x : float or PyoObject
new `mark` attribute.
"""
self._mark = x
x, lmax = convertArgsToLists(x)
[obj.setMark(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def setInterp(self, x):
"""
Replace the `interp` attribute.
:Args:
x : int {1, 2, 3, 4}
new `interp` attribute.
"""
self._interp = x
x, lmax = convertArgsToLists(x)
[obj.setInterp(wrap(x,i)) for i, obj in enumerate(self._base_players)]
def getMarkers(self):
"""
Returns a list of marker time values in samples.
"""
return self._markers
def ctrl(self, map_list=None, title=None, wxnoserver=False):
self._map_list = [SLMap(0.01, 2., 'lin', 'speed', self._speed),
SLMap(0, len(self._markers)-1, 'lin', 'mark', self._mark, 'int'),
SLMapMul(self._mul)]
PyoObject.ctrl(self, map_list, title, wxnoserver)
@property
def speed(self):
"""float or PyoObject. Transposition factor."""
return self._speed
@speed.setter
def speed(self, x): self.setSpeed(x)
@property
def mark(self):
"""float or PyoObject. Marker to loop."""
return self._marker
@mark.setter
def mark(self, x): self.setMark(x)
@property
def interp(self):
"""int {1, 2, 3, 4}. Interpolation method."""
return self._interp
@interp.setter
def interp(self, x): self.setInterp(x)
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