void process_music ();
Real equalize_volume (Real);
- DECLARE_TRANSLATOR_LISTENER (decrescendo);
- DECLARE_TRANSLATOR_LISTENER (crescendo);
- DECLARE_TRANSLATOR_LISTENER (absolute_dynamic);
+ void listen_decrescendo (Stream_event *);
+ void listen_crescendo (Stream_event *);
+ void listen_absolute_dynamic (Stream_event *);
private:
Stream_event *script_event_;
Drul_array<Stream_event *> span_events_;
Drul_array<Direction> grow_dir_;
Real last_volume_;
- bool last_volume_initialized_;
Audio_dynamic *absolute_;
Audio_span_dynamic *span_dynamic_;
Audio_span_dynamic *finished_span_dynamic_;
Dynamic_performer::Dynamic_performer ()
{
- last_volume_ = 0.0;
- last_volume_initialized_ = false;
+ last_volume_ = -1;
script_event_ = 0;
absolute_ = 0;
span_events_[LEFT]
announce_element (Audio_element_info (span_dynamic_, span_events_[START]));
span_dynamic_->grow_dir_ = grow_dir_[START];
-
- if (!last_volume_initialized_ && !script_event_)
- {
- // No explicit dynamic script events have occurred yet, but there is
- // nevertheless a dynamic spanner. Initialize last_volume_ to a
- // value within the available range.
- span_events_[START]->origin ()->warning (_ ("(De)crescendo with unspecified starting volume in MIDI."));
- last_volume_ = equalize_volume (0.5);
- last_volume_initialized_ = true;
- }
}
if (script_event_
last_volume_
= absolute_->volume_ = equalize_volume (volume);
- last_volume_initialized_ = true;
}
Audio_element_info info (absolute_, script_event_);
announce_element (info);
}
- if (!last_volume_initialized_)
+ if (last_volume_ < 0)
{
absolute_ = new Audio_dynamic ();
last_volume_
= absolute_->volume_ = equalize_volume (0.71); // Backward compatible
- last_volume_initialized_ = true;
Audio_element_info info (absolute_, script_event_);
announce_element (info);
finished_span_dynamic_ = 0;
}
- if (absolute_ && absolute_->volume_ < 0)
- {
- absolute_->volume_ = last_volume_;
- }
- else if (absolute_)
+ if (absolute_)
{
- last_volume_ = absolute_->volume_;
- last_volume_initialized_ = true;
+ if (absolute_->volume_ < 0)
+ {
+ absolute_->volume_ = last_volume_;
+ }
+ else
+ {
+ last_volume_ = absolute_->volume_;
+ }
}
absolute_ = 0;