source file of the GNU LilyPond music typesetter
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "performer.hh"
-#include "command-request.hh"
-#include "musical-request.hh"
+
+#include "event.hh"
#include "audio-item.hh"
+/*
+ TODO: fold this into 1 engraver: \< and \> should also stop when
+ absdyn is encountered.
+ */
+
struct Audio_dynamic_tuple
{
- Audio_dynamic* audio_l_;
+ Audio_dynamic* audio_;
Moment mom_;
};
class Span_dynamic_performer : public Performer
{
public:
- VIRTUAL_COPY_CONS (Translator);
-
- Span_dynamic_performer ();
+ TRANSLATOR_DECLARATIONS(Span_dynamic_performer);
protected:
- virtual bool do_try_music (Music* req_l);
- virtual void acknowledge_element (Audio_element_info);
- virtual void do_process_music ();
- virtual void do_pre_move_processing ();
- virtual void do_post_move_processing ();
+ virtual bool try_music (Music*);
+ virtual void acknowledge_audio_element (Audio_element_info);
+ virtual void process_music ();
+ virtual void stop_translation_timestep ();
private:
- Audio_dynamic* audio_p_;
- Span_req* span_start_req_l_;
- Drul_array<Span_req*> span_req_l_drul_;
- Array<Audio_dynamic_tuple> dynamic_tuple_arr_;
- Array<Audio_dynamic_tuple> finished_dynamic_tuple_arr_;
+ Audio_dynamic* audio_;
+ Real last_volume_;
+ Music* span_start_event_;
+ Drul_array<Music*> span_events_;
+ Array<Audio_dynamic_tuple> dynamic_tuples_;
+ Array<Audio_dynamic_tuple> finished_dynamic_tuples_;
Direction dir_;
Direction finished_dir_;
};
-ADD_THIS_TRANSLATOR (Span_dynamic_performer);
-
Span_dynamic_performer::Span_dynamic_performer ()
{
- span_req_l_drul_[START] = 0;
- span_req_l_drul_[STOP] = 0;
- span_start_req_l_ = 0;
- audio_p_ = 0;
+ span_events_[START] = 0;
+ span_events_[STOP] = 0;
+ span_start_event_ = 0;
+ audio_ = 0;
+ last_volume_ = 0;
}
void
-Span_dynamic_performer::acknowledge_element (Audio_element_info i)
+Span_dynamic_performer::acknowledge_audio_element (Audio_element_info i)
{
- if (Audio_dynamic * d = dynamic_cast <Audio_dynamic*> (i.elem_l_))
+ if (Audio_dynamic * d = dynamic_cast <Audio_dynamic*> (i.elem_))
+ {
+ last_volume_ = d->volume_;
+ }
+}
+
+void
+Span_dynamic_performer::process_music ()
+{
+ if (span_start_event_ || span_events_[START])
+ {
+ audio_ = new Audio_dynamic (0);
+ Audio_element_info info (audio_, span_events_[START]
+ ? span_events_[START]
+ : span_events_[STOP]);
+ announce_element (info);
+ Audio_dynamic_tuple a = { audio_, now_mom () };
+ dynamic_tuples_.push (a);
+ }
+
+ if (span_events_[STOP])
+ {
+ if (!span_start_event_)
+ {
+ span_events_[STOP]->origin ()->warning (_ ("can't find start of (de)crescendo"));
+ span_events_[STOP] = 0;
+ }
+ else
+ {
+ finished_dir_ = dir_;
+ finished_dynamic_tuples_ = dynamic_tuples_;
+ }
+ dynamic_tuples_.clear ();
+ span_start_event_ = 0;
+ }
+
+ if (span_events_[START])
+ {
+ dir_ = (span_events_[START]->is_mus_type ("crescendo-event"))
+ ? RIGHT : LEFT;
+ span_start_event_ = span_events_[START];
+
+ dynamic_tuples_.clear ();
+ Audio_dynamic_tuple a = { audio_, now_mom () };
+ dynamic_tuples_.push (a);
+ }
+
+
+ if (span_events_[STOP])
+ {
+ finished_dynamic_tuples_.top ().audio_->volume_ = last_volume_;
+ }
+
+ if (span_events_[START])
{
- Audio_dynamic_tuple a = { d, now_mom () };
- if (!span_req_l_drul_[START])
- dynamic_tuple_arr_.clear ();
- dynamic_tuple_arr_.push (a);
- if (finished_dynamic_tuple_arr_.size ())
- finished_dynamic_tuple_arr_.push (a);
+ dynamic_tuples_[0].audio_->volume_ = last_volume_;
}
+ span_start_event_ = 0;
+ span_events_[START] = 0;
+ span_events_[STOP] = 0;
}
void
-Span_dynamic_performer::do_process_music ()
+Span_dynamic_performer::stop_translation_timestep ()
{
- if (finished_dynamic_tuple_arr_.size () > 1
- && finished_dynamic_tuple_arr_.top ().audio_l_->volume_i_)
+ if (finished_dynamic_tuples_.size () > 1)
{
- Real start_volume = finished_dynamic_tuple_arr_[0].audio_l_->volume_i_;
- Real dv = finished_dynamic_tuple_arr_.top ().audio_l_->volume_i_
+ Real start_volume = finished_dynamic_tuples_[0].audio_->volume_;
+ Real dv = finished_dynamic_tuples_.top ().audio_->volume_
- start_volume;
/*
urg.
*/
if (!dv || sign (dv) != finished_dir_)
{
- // urg. about one volume step
- dv = (int)finished_dir_ * 13;
+ // urg. 20%: about two volume steps
+ dv = (Real)finished_dir_ * 0.2;
if (!start_volume)
- start_volume = finished_dynamic_tuple_arr_.top
- ().audio_l_->volume_i_ - dv;
- }
- Moment start_mom = finished_dynamic_tuple_arr_[0].mom_;
- Moment dt = finished_dynamic_tuple_arr_.top ().mom_ - start_mom;
- for (int i=0; i < finished_dynamic_tuple_arr_.size (); i++)
- {
- Audio_dynamic_tuple* a = &finished_dynamic_tuple_arr_[i];
- Real volume = start_volume + dv * (Real)(a->mom_ - start_mom)
- / (Real)dt;
- a->audio_l_->volume_i_ = (int)volume;
+ start_volume = finished_dynamic_tuples_.top
+ ().audio_->volume_ - dv;
}
- finished_dynamic_tuple_arr_.clear ();
- }
-
- if (span_req_l_drul_[STOP])
- {
- finished_dir_ = dir_;
- if (!span_start_req_l_)
- {
- span_req_l_drul_[STOP]->warning (_ ("can't find start of (de)crescendo"));
- }
- else
+ Moment start_mom = finished_dynamic_tuples_[0].mom_;
+ Moment dt = finished_dynamic_tuples_.top ().mom_ - start_mom;
+ for (int i=0; i < finished_dynamic_tuples_.size (); i++)
{
- span_start_req_l_ = 0;
- finished_dynamic_tuple_arr_ = dynamic_tuple_arr_;
- dynamic_tuple_arr_.clear ();
- if (finished_dynamic_tuple_arr_.size ())
- dynamic_tuple_arr_.push (finished_dynamic_tuple_arr_.top ());
+ Audio_dynamic_tuple* a = &finished_dynamic_tuples_[i];
+ Real volume = start_volume + dv * (Real) (a->mom_ - start_mom).main_part_
+ / (Real)dt.main_part_;
+ a->audio_->volume_ = volume;
}
+ finished_dynamic_tuples_.clear ();
}
- if (span_req_l_drul_[START])
+ if (audio_)
{
- dir_ = span_req_l_drul_[START]->span_type_str_ == "crescendo"
- ? RIGHT : LEFT;
- span_start_req_l_ = span_req_l_drul_[START];
- audio_p_ = new Audio_dynamic (0);
- Audio_element_info info (audio_p_, 0);
- announce_element (info);
-
- Audio_dynamic_tuple a = { audio_p_, now_mom () };
- dynamic_tuple_arr_.push (a);
+ play_element (audio_);
+ audio_ = 0;
}
-}
-void
-Span_dynamic_performer::do_pre_move_processing ()
-{
- if (audio_p_)
- {
- play_element (audio_p_);
- audio_p_ = 0;
- }
-}
+ span_events_[STOP] = 0;
+ span_events_[START] = 0;
-void
-Span_dynamic_performer::do_post_move_processing ()
-{
- span_req_l_drul_[STOP] = 0;
- span_req_l_drul_[START] = 0;
}
bool
-Span_dynamic_performer::do_try_music (Music* r)
+Span_dynamic_performer::try_music (Music* r)
{
- if (Span_req * s = dynamic_cast<Span_req*>(r))
+ if (r->is_mus_type ("crescendo-event")
+ || r->is_mus_type ("decrescendo-event"))
{
- if (s-> span_type_str_ == "crescendo"
- || s->span_type_str_ == "decrescendo")
- {
- span_req_l_drul_[s->span_dir_] = s;
- return true;
- }
+ Direction d = to_dir (r->get_mus_property ("span-direction"));
+ span_events_[d] = r;
+ return true;
}
return false;
}
+ENTER_DESCRIPTION (Span_dynamic_performer,
+ "", "",
+ "crescendo-event decrescendo-event",
+ "", "", "");
projects / lilypond.git / blobdiff