Fix setting of device parameters.

- Added the ability to set a device parameter value.
- Fixed a crash on startup reading the arm state of tracks without a readable arm property.

LO2ChannelStripComponent.py

@@ -193,7 +193,7 @@ def _lo2__on_solo_changed(self):
             self.send_default('/live/'+self._track_types[self._type]+'solo', self._track.solo)
 
     def _lo2__on_arm_changed(self):
-        if self._type == 0 and self._type is not None:
+        if self._type == 0 and self._type is not None and self._track.can_be_armed:
             self.send_default('/live/'+self._track_types[self._type]+'arm', self._track.arm)
 
     def _lo2__on_track_name_changed(self):

LO2MixerComponent.py

@@ -59,11 +59,14 @@ def _lo2__on_return_tracks_changed(self):
 
     # Callbacks
     def _lo2_on_track_list_changed(self):
+        self.log_message('on_track_list_changed')
         if len(self.song().tracks) != self._track_count:
+            self.log_message('/live/tracks:' + str(len(self.song().tracks)))
             self.send('/live/tracks', len(self.song().tracks))
             self._track_count = len(self.song().tracks)
 
     def _lo2_on_selected_track_changed(self):
+        self.log_message('on_selected_track_changed')
         id, type = self.track_id_type(self.song().view.selected_track)
 
         self.send('/live/track/select', type, id)
@@ -83,4 +86,4 @@ def _track_name_block(self, msg, src):
                 b.append(i, '')
 
         self.send('/live/track/name/block', b)
-
+

LO2Mixin.py

@@ -20,8 +20,6 @@
 # beginning _lo2_<FrameworkListener>
 def _decorate(fn, child, name):
     def wrap(*a, **kw):
-        LO2Mixin.log_message('calling LO2 wrapper: '+name)
-
         ret = fn(*a, **kw)
         child(*a, **kw)
 

LO2ParameterComponent.py

@@ -16,6 +16,10 @@ def __init__(self, send = False):
     def set_parameter(self, param):
         self._parameter = param
         self._on_value_changed.subject = param
+
+
+    def set_parameter_value(self, value):
+        self._parameter.value = value
 
 
     @subject_slot('value')
@@ -32,4 +36,5 @@ def _on_value_changed(self):
 
             p = list(self._parameter.canonical_parent.parameters).index(self._parameter)
 
-            self.send('/live/'+self._track_types[ty]+'device/param', tid, d, p, self._parameter.value, str(self._parameter.name))
+            self.send('/live/'+self._track_types[ty]+'device/param', tid, d, p, self._parameter.value, str(self._parameter.name))
+