comparison audioio/AudioCallbackPlaySource.h @ 7:3a41ba527b4a

* Add command history class, and basic undo/redo menus.  No actual commands
  to undo/redo yet.  Selecting the placeholders sometimes seems to cause
  a crash, so this looks a little uncertain so far.

* Add Rename Layer

* Remove models from playback when their layers are removed (and ref counts
  hit zero)

* Don't hang around waiting so much when there's work to be done in the audio
  buffer fill thread

* Put more sensible names on layers generated from transforms

* Add basic editing to time-value layer like existing editing in time-instants
  layer, and make both of them snap to the appropriate resolution during drag

     size_t m_slowdownCounter;
     TimeStretcherData *m_timeStretcher;
     Scavenger<TimeStretcherData> m_timeStretcherScavenger;
 
     // Called from fill thread, m_playing true, mutex held
-    void fillBuffers();
+    // Return true if work done
+    bool fillBuffers();
     
     // Called from fillBuffers.  Return the number of frames written,
     // which will be count or fewer.  Return in the frame argument the
     // new buffered frame position (which may be earlier than the
     // frame argument passed in, in the case of looping).