+++ /dev/null
-/*
- dynamic-performer.cc -- implement Dynamic_performer
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2006 Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-#include "performer.hh"
-
-#include "audio-item.hh"
-#include "stream-event.hh"
-#include "translator.icc"
-
-/*
- TODO:
-
- handle multiple events
-
- perform absolute (text) dynamics
-*/
-class Dynamic_performer : public Performer
-{
-public:
- TRANSLATOR_DECLARATIONS (Dynamic_performer);
-protected:
- void stop_translation_timestep ();
- void process_music ();
-
- DECLARE_TRANSLATOR_LISTENER (absolute_dynamic);
-private:
- Stream_event *script_event_;
- Audio_dynamic *audio_;
-};
-
-Dynamic_performer::Dynamic_performer ()
-{
- script_event_ = 0;
- audio_ = 0;
-}
-
-void
-Dynamic_performer::process_music ()
-{
- if (script_event_)
- {
- SCM proc = get_property ("dynamicAbsoluteVolumeFunction");
-
- SCM svolume = SCM_EOL;
- if (ly_is_procedure (proc))
- {
- // urg
- svolume = scm_call_1 (proc, script_event_->get_property ("text"));
- }
-
- Real volume = robust_scm2double (svolume, 0.5);
-
- /*
- properties override default equaliser setting
- */
- SCM min = get_property ("midiMinimumVolume");
- SCM max = get_property ("midiMaximumVolume");
- if (scm_is_number (min) || scm_is_number (max))
- {
- Interval iv (0, 1);
- if (scm_is_number (min))
- iv[MIN] = scm_to_double (min);
- if (scm_is_number (max))
- iv[MAX] = scm_to_double (max);
- volume = iv[MIN] + iv.length () * volume;
- }
- else
- {
- /*
- urg, code duplication:: staff_performer
- */
- SCM s = get_property ("midiInstrument");
-
- if (!scm_is_string (s))
- s = get_property ("instrumentName");
-
- if (!scm_is_string (s))
- s = scm_makfrom0str ("piano");
-
- SCM eq = get_property ("instrumentEqualizer");
- if (ly_is_procedure (eq))
- s = scm_call_1 (eq, s);
-
- if (is_number_pair (s))
- {
- Interval iv = ly_scm2interval (s);
- volume = iv[MIN] + iv.length () * volume;
- }
- }
-
- audio_ = new Audio_dynamic (volume);
- Audio_element_info info (audio_, script_event_);
- announce_element (info);
- script_event_ = 0;
- }
-}
-
-void
-Dynamic_performer::stop_translation_timestep ()
-{
- if (audio_)
- {
- audio_ = 0;
- }
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_performer, absolute_dynamic);
-void
-Dynamic_performer::listen_absolute_dynamic (Stream_event *r)
-{
- if (!script_event_)
- script_event_ = r;
-}
-
-ADD_TRANSLATOR (Dynamic_performer,
- /* doc */ "",
- /* create */ "",
-
- /* read */
- "dynamicAbsoluteVolumeFunction "
- "instrumentEqualizer "
- "midiMaximumVolume "
- "midiMinimumVolume "
- "midiInstrument "
- ,
- /*writes*/"");
+++ /dev/null
-/*
- span-dynamic-performer.cc -- implement Span_dynamic_performer
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2006 Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-#include "performer.hh"
-
-#include "audio-item.hh"
-#include "international.hh"
-#include "stream-event.hh"
-
-#include "translator.icc"
-
-/*
- TODO: fold this into 1 engraver: \< and \> should also stop when
- absdyn is encountered.
-*/
-struct Audio_dynamic_tuple
-{
- Audio_dynamic *audio_;
- Moment mom_;
-};
-
-/**
- perform span-dynamics
-*/
-class Span_dynamic_performer : public Performer
-{
-public:
- TRANSLATOR_DECLARATIONS (Span_dynamic_performer);
-
-protected:
- virtual void acknowledge_audio_element (Audio_element_info);
- void process_music ();
- void stop_translation_timestep ();
-
- DECLARE_TRANSLATOR_LISTENER (decrescendo);
- DECLARE_TRANSLATOR_LISTENER (crescendo);
-private:
- Audio_dynamic *audio_;
- Real last_volume_;
- Stream_event *span_start_event_;
- Drul_array<Stream_event *> span_events_;
- vector<Audio_dynamic_tuple> dynamic_tuples_;
- vector<Audio_dynamic_tuple> finished_dynamic_tuples_;
- Direction dir_;
- Direction finished_dir_;
-};
-
-Span_dynamic_performer::Span_dynamic_performer ()
-{
- span_events_[START] = 0;
- span_events_[STOP] = 0;
- span_start_event_ = 0;
- audio_ = 0;
- last_volume_ = 0;
-}
-
-void
-Span_dynamic_performer::acknowledge_audio_element (Audio_element_info i)
-{
- 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_back (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]->in_event_class ("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::stop_translation_timestep ()
-{
- 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_)
- {
- audio_ = 0;
- }
-
- span_events_[STOP] = 0;
- span_events_[START] = 0;
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (Span_dynamic_performer, decrescendo);
-void
-Span_dynamic_performer::listen_decrescendo (Stream_event *r)
-{
- Direction d = to_dir (r->get_property ("span-direction"));
- span_events_[d] = r;
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (Span_dynamic_performer, crescendo);
-void
-Span_dynamic_performer::listen_crescendo (Stream_event *r)
-{
- Direction d = to_dir (r->get_property ("span-direction"));
- span_events_[d] = r;
-}
-
-ADD_TRANSLATOR (Span_dynamic_performer,
- "", "",
- "", "");