def open(self):
try:
self.load(False)
except ValueError:
print "Error loading %s" % self.filename
return False
self._loader = Loader('behaviors', AudioBehavior, interface_names=['AudioBehavior'])
self._behavior_classes = self._loader.load()
self._audiolist_data = self.data.get('audiolist', [])
self._audiolist = []
self._active_index = 0
self._next_index = 0
self._shuffle = self._app.settings['mixer']['shuffle']
self._shuffle_list = []
self.generate_audiolist()
self._notifier.audiolist_changed.emit()
return True
def open(self):
try:
self.load(False)
except ValueError:
print "Error loading %s" % self.filename
return False
self._loader = Loader('presets', Preset, interface_names=['Preset', 'RawPreset'])
self._preset_classes = self._loader.load()
self._playlist_data = self.data.get('playlist', [])
self._playlist = []
self._active_index = 0
self._next_index = 0
self._shuffle = self._app.settings['mixer']['shuffle']
self._shuffle_list = []
self.generate_playlist()
self._notifier.playlist_changed.emit()
return True
class Audiolist(JSONDict):
"""
Manages the available behaviors and the current audiolist of behaviors.
"""
class Notifier(QtCore.QObject):
audiolist_changed = QtCore.Signal()
def __init__(self, app, name, last_audiolist_settings_key, subdir = ''):
self._app = app
self.last_audiolist_settings_key = last_audiolist_settings_key
self.name = name
self._notifier = Audiolist.Notifier()
if self.name is None:
self.name = self._app.settings.get("mixer").get(
self.last_audiolist_settings_key, "default")
filepath = os.path.join(os.getcwd(), "data", "playlists", subdir, 'audio',
"".join([self.name, ".json"]))
JSONDict.__init__(self, 'audiolist', filepath, True)
self.open()
def set_filename(self, filename):
self.name = os.path.split(filename)[1].replace(".json", "")
self.filename = filename
def open(self):
try:
self.load(False)
except ValueError:
print "Error loading %s" % self.filename
return False
self._loader = Loader('behaviors', AudioBehavior, interface_names=['AudioBehavior'])
self._behavior_classes = self._loader.load()
self._audiolist_data = self.data.get('audiolist', [])
self._audiolist = []
self._active_index = 0
self._next_index = 0
self._shuffle = self._app.settings['mixer']['shuffle']
self._shuffle_list = []
self.generate_audiolist()
self._notifier.audiolist_changed.emit()
return True
def generate_audiolist(self):
"""Creates an instance of each audioBehavior object used in the playlist"""
if len(self._audiolist_data) == 0:
self._audiolist = []
for entry in self._audiolist_data:
if entry['classname'] in self._behavior_classes:
inst = self._behavior_classes[entry['classname']](self._app.mixer, name=entry['name'])
inst._reset()
for _, key in enumerate(entry.get('params', {})):
try:
inst.parameter(key).set_from_str(str(entry['params'][key]))
except AttributeError:
log.warn("Parameter %s called out in audiolist but not found in plugin. Perhaps it was renamed?" % key)
self._audiolist.append(inst)
else:
self._audiolist_data.remove(entry)
self._active_index = 0
if self._shuffle and len(self._audiolist) > 1:
self.generate_shuffle()
self._next_index = self._shuffle_list.pop()
else:
self._next_index = 0 if len(self._audiolist) == 0 else 1 % len(self._audiolist)
return self._audiolist
def shuffle_mode(self, shuffle=True):
"""
Enables or disables audiolist shuffle
"""
self._shuffle = shuffle
def generate_shuffle(self):
"""
Creates a shuffle list
"""
self._shuffle_list = range(len(self._audiolist))
random.shuffle(self._shuffle_list)
if self._active_index in self._shuffle_list:
self._shuffle_list.remove(self._active_index)
def reload_behaviors(self):
"""Attempts to reload all behavior classes in the audiolist"""
old_active = self._active_index
old_next = self._next_index
self._behavior_classes = self._loader.reload()
while len(self._audiolist) > 0:
inst = self._audiolist.pop(0)
inst.clear_parameters()
del inst
gc.collect()
self.generate_audiolist()
self._active_index = old_active % len(self._audiolist)
self._next_index = old_next % len(self._audiolist)
self._notifier.audiolist_changed.emit()
# def save(self):
# log.info("Saving audiolist")
# # Pack the current state into self.data
# self.data = {'file-type': 'audiolist'}
# audiolist = []
# for behavior in self._audiolist:
# audiolist_entry = {'classname': behavior.__class__.__name__,
# 'name': behavior.get_name()}
# param_dict = {}
# for name, param in behavior.get_parameters().iteritems():
# param_dict[name] = param.get_as_str()
# audiolist_entry['params'] = param_dict
# audiolist.append(audiolist_entry)
# self.data['audiolist'] = audiolist
# # Superclass write to file
# self._app.settings.get("mixer")[self._last_audiolist_settings_key] = self.name
# JSONDict.save(self)
def get(self):
return self._audiolist
def advance(self, direction=1):
"""
Advances the audiolist
"""
#TODO: support transitions other than cut
self._active_index = self._next_index
if self._shuffle:
if len(self._shuffle_list) == 0:
self.generate_shuffle()
self._next_index = self._shuffle_list.pop()
else:
self._next_index = (self._next_index + direction) % len(self._audiolist)
self._notifier.audiolist_changed.emit()
def __len__(self):
return len(self._audiolist)
def get_active_index(self):
return self._active_index
def get_next_index(self):
return self._next_index
def get_active_behavior(self):
if len(self._audiolist) == 0:
return None
else:
return self._audiolist[self._active_index]
def get_behavior_relative_to_active(self, pos):
"""
Returns the behavior name of a behavior relative to the active behavior by an offset of pos
For exapmle, get_behavior_relative_to_active(1) would return the next in the audiolist
"""
return self._audiolist[(self._active_index + pos) % len(self._audiolist)].get_name()
def get_next_behavior(self):
if len(self._audiolist) == 0:
return None
else:
return self._audiolist[self._next_index]
def get_behavior_by_index(self, idx):
if len(self._audiolist) == 0:
return None
else:
return self._audiolist[idx]
def get_behavior_by_name(self, name):
for behavior in self._audiolist:
if behavior.get_name() == name:
return behavior
return None
def set_active_index(self, idx):
self._active_index = idx % len(self._audiolist)
self._next_index = (self._active_index + 1) % len(self._audiolist)
self.get_active_behavior()._reset()
self._notifier.audiolist_changed.emit()
def set_active_behavior_by_name(self, name):
#TODO: Support transitions other than jump cut
for i, behavior in enumerate(self._audiolist):
if behavior.get_name() == name:
behavior._reset()
self._active_index = i
self._app.mixer._elapsed = 0.0 # Hack
self._notifier.audiolist_changed.emit()
return
def set_next_behavior_by_name(self, name):
for i, behavior in enumerate(self._audiolist):
if behavior.get_name() == name:
self._next_index = i
self._notifier.audiolist_changed.emit()
return
def reorder_audiolist_by_names(self, names):
"""
Pass in a list of behavior names to reorder.
"""
current = dict([(behavior.get_name(), behavior) for behavior in self._audiolist])
new = []
for name in names:
new.append(current[name])
self._audiolist = new
self._notifier.audiolist_changed.emit()
def get_available_behaviors(self):
return self._behavior_classes.keys()
def behavior_name_exists(self, name):
return True if name in [p.get_name() for p in self._audiolist] else False
def add_behavior(self, classname, name, idx=None):
"""
Adds a new behavior instance to the audiolist. Classname must be a currently loaded
behavior class. Name must be unique. If idx is specified, the behavior will be inserted
at the position idx, else it will be appended to the end of the audiolist.
"""
if classname not in self._behavior_classes:
log.error("Tried to add nonexistent behavior class %s" % classname)
return False
if self.behavior_name_exists(name):
return False
inst = self._behavior_classes[classname](self._app.mixer, name=name)
inst._reset()
if idx is not None:
self._audiolist.insert(idx, inst)
else:
self._audiolist.append(inst)
if self._active_index == self._next_index:
self._next_index = (self._next_index + 1) % len(self._audiolist)
self._notifier.audiolist_changed.emit()
return True
def remove_behavior(self, name):
"""
Removes an existing instance from the audiolist
"""
if not self.behavior_name_exists(name):
return False
pl = [(i, p) for i, p in enumerate(self._audiolist) if p.get_name() == name]
assert len(pl) == 1
self._audiolist.remove(pl[0][1])
self._next_index = self._next_index % len(self._audiolist)
self._active_index = self._active_index % len(self._audiolist)
self._notifier.audiolist_changed.emit()
return True
def clone_behavior(self, old_name):
old = self.get_behavior_by_name(old_name)
classname = old.__class__.__name__
new_name = old_name + " clone"
self.add_behavior(classname, new_name, self.get_active_index())
new = self.get_behavior_by_name(new_name)
for name, param in old.get_parameters().iteritems():
new.parameter(name).set_from_str(param.get_as_str())
self._notifier.audiolist_changed.emit()
def clear_audiolist(self):
self._audiolist = []
self._active_index = 0
self._next_index = 0
self._notifier.audiolist_changed.emit()
def rename_behavior(self, old_name, new_name):
pl = [i for i, p in enumerate(self._audiolist) if p.get_name() == old_name]
if len(pl) != 1:
return False
self._audiolist[pl[0]].set_name(new_name)
self._notifier.audiolist_changed.emit()
def generate_default_audiolist(self):
"""
Wipes out the existing audiolist and adds one instance of each behavior
"""
self.clear_audiolist()
for cn in self._behavior_classes:
name = cn + "-1"
inst = self._behavior_classes[cn](self._app.mixer, name=name)
inst.setup()
self._audiolist.append(inst)
self._notifier.audiolist_changed.emit()
def suggest_behavior_name(self, classname):
"""
Returns an unused behavior name based on the classname, in the form "Classname-N",
where N is an integer.
"""
i = 1
name = classname + "-" + str(i)
while self.behavior_name_exists(name):
i += 1
name = classname + "-" + str(i)
return name
