source file of the GNU LilyPond music typesetter
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2006 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "performer.hh"
-#include "command-request.hh"
-#include "musical-request.hh"
+
#include "audio-item.hh"
+#include "international.hh"
+#include "music.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_;
};
/**
- handle perform span-dynamics
- */
+ perform span-dynamics
+*/
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_requests ();
- virtual void do_pre_move_processing ();
+ virtual bool try_music (Music *);
+ virtual void acknowledge_audio_element (Audio_element_info);
+ void process_music ();
+ void stop_translation_timestep ();
private:
- Drul_array<Span_req*> request_drul_;
- Drul_array<Moment> moment_drul_;
- Drul_array<int> volume_drul_;
- Array<Audio_dynamic_tuple> dynamic_tuple_arr_;
-
- // BURP
- Drul_array<Moment> done_moment_drul_;
- Drul_array<int> done_volume_drul_;
- Array<Audio_dynamic_tuple> done_dynamic_tuple_arr_;
-
- Audio_dynamic* audio_p_;
+ Audio_dynamic *audio_;
+ Real last_volume_;
+ Music *span_start_event_;
+ Drul_array<Music *> span_events_;
+ vector<Audio_dynamic_tuple> dynamic_tuples_;
+ vector<Audio_dynamic_tuple> finished_dynamic_tuples_;
+ Direction dir_;
+ Direction finished_dir_;
};
-ADD_THIS_TRANSLATOR (Span_dynamic_performer);
-
Span_dynamic_performer::Span_dynamic_performer ()
{
- request_drul_[START] = request_drul_[STOP] = 0;
- volume_drul_[START] = volume_drul_[STOP] = 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_))
- {
- Direction dir = volume_drul_[START] ? STOP : START;
- volume_drul_[dir] = d->volume_i_;
- if (done_dynamic_tuple_arr_.size ())
- done_volume_drul_[STOP] = d->volume_i_;
-#if 0
- Audio_dynamic_tuple a = { d, now_mom () };
- dynamic_tuple_arr_.push (a);
-#endif
- }
+ if (Audio_dynamic *d = dynamic_cast<Audio_dynamic *> (i.elem_))
+ last_volume_ = d->volume_;
}
void
-Span_dynamic_performer::do_process_requests ()
+Span_dynamic_performer::process_music ()
{
- if (request_drul_[START])
+ if (span_start_event_ || span_events_[START])
{
- audio_p_ = new Audio_dynamic (volume_drul_[START]);
- Audio_element_info info (audio_p_, 0);
+ 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_p_, now_mom () };
- dynamic_tuple_arr_.push (a);
+ Audio_dynamic_tuple a = { audio_, now_mom () };
+ dynamic_tuples_.push_back (a);
}
- if (done_dynamic_tuple_arr_.size ())
+ if (span_events_[STOP])
{
- if (done_volume_drul_[STOP])
+ if (!span_start_event_)
{
- Real dv = done_volume_drul_[STOP] - done_volume_drul_[START];
- Moment dt = done_moment_drul_[STOP] - done_moment_drul_[START];
- for (int i=0; i < done_dynamic_tuple_arr_.size (); i++)
- {
- Real volume =
- (done_volume_drul_[START]
- + dv * (Real)(done_dynamic_tuple_arr_[i].mom_
- - done_moment_drul_[START]) / (Real)dt);
- done_dynamic_tuple_arr_[i].audio_l_->volume_i_ = (int)volume;
- }
+ span_events_[STOP]->origin ()->warning (_ ("can't find start of (de)crescendo"));
+ span_events_[STOP] = 0;
}
- done_dynamic_tuple_arr_.clear ();
+ else
+ {
+ finished_dir_ = dir_;
+ finished_dynamic_tuples_ = dynamic_tuples_;
+ }
+ dynamic_tuples_.clear ();
+ span_start_event_ = 0;
}
- if (request_drul_[STOP])
+ if (span_events_[START])
{
- done_dynamic_tuple_arr_ = dynamic_tuple_arr_;
- dynamic_tuple_arr_.clear ();
- done_volume_drul_[START] = volume_drul_[START];
- done_volume_drul_[STOP] = volume_drul_[STOP];
- done_moment_drul_[START] = moment_drul_[START];
- done_moment_drul_[STOP] = moment_drul_[STOP];
- request_drul_[STOP] = 0;
- volume_drul_[START] = volume_drul_[STOP];
- volume_drul_[STOP] = 0;
+ 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_back (a);
}
+
+ if (span_events_[STOP])
+ finished_dynamic_tuples_.back ().audio_->volume_ = last_volume_;
+
+ if (span_events_[START])
+ dynamic_tuples_[0].audio_->volume_ = last_volume_;
+
+ span_events_[START] = 0;
+ span_events_[STOP] = 0;
}
void
-Span_dynamic_performer::do_pre_move_processing ()
+Span_dynamic_performer::stop_translation_timestep ()
{
- if (audio_p_)
+ if (finished_dynamic_tuples_.size () > 1)
+ {
+ Real start_volume = finished_dynamic_tuples_[0].audio_->volume_;
+ Real dv = finished_dynamic_tuples_.back ().audio_->volume_
+ - start_volume;
+ /*
+ urg.
+ Catch and fix the case of:
+
+ | |
+ x| x|
+ f cresc. -- -- -- -- -- pp
+
+ Actually, we should provide a non-displayed dynamic/volume setting,
+ to set volume to 'ff' just before the pp.
+ */
+ if (!dv || sign (dv) != finished_dir_)
+ {
+ // urg. 20%: about two volume steps
+ dv = (Real)finished_dir_ * 0.2;
+ if (!start_volume)
+ start_volume = finished_dynamic_tuples_.back ().audio_->volume_
+ - dv;
+ }
+ Moment start_mom = finished_dynamic_tuples_[0].mom_;
+ Moment dt = finished_dynamic_tuples_.back ().mom_ - start_mom;
+ for (vsize i = 0; i < finished_dynamic_tuples_.size (); i++)
+ {
+ 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 (audio_)
{
- play_element (audio_p_);
- audio_p_ = 0;
+ play_element (audio_);
+ audio_ = 0;
}
+
+ span_events_[STOP] = 0;
+ span_events_[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")
- return false;
-
- Direction d = s->span_dir_;
-
- if (d == STOP && !request_drul_[START])
- {
- r->warning (_ ("No (de)crescendo to end"));
- return false;
- }
- request_drul_[d] = s;
- moment_drul_[d] = now_mom ();
- if (d == START && volume_drul_[STOP])
- volume_drul_[START] = volume_drul_[STOP];
+ Direction d = to_dir (r->get_property ("span-direction"));
+ span_events_[d] = r;
return true;
}
return false;
}
+#include "translator.icc"
+
+ADD_TRANSLATOR (Span_dynamic_performer,
+ "", "",
+ "crescendo-event decrescendo-event",
+ "", "");