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:
- handle multiple requests
- handle span requests (crescendo/decrescendo)
- */
+
+ handle multiple events
-/**
- perform absolute (text) dynamics
+ perform absolute (text) dynamics
*/
class Dynamic_performer : public Performer
{
public:
- VIRTUAL_COPY_CONS (Translator);
-
- Dynamic_performer ();
- ~Dynamic_performer ();
-
+ TRANSLATOR_DECLARATIONS(Dynamic_performer);
protected:
- void do_print () const;
- virtual bool do_try_music (Music* req_l);
- virtual void do_process_music ();
- virtual void do_pre_move_processing ();
+ virtual bool try_music (Music* req);
+ virtual void stop_translation_timestep ();
+ virtual void create_audio_elements ();
private:
- Text_script_req* text_script_req_l_;
- Audio_dynamic* audio_p_;
+ Music* script_req_;
+ Audio_dynamic* audio_;
};
-ADD_THIS_TRANSLATOR (Dynamic_performer);
-
Dynamic_performer::Dynamic_performer ()
{
- text_script_req_l_ = 0;
- audio_p_ = 0;
-}
-
-Dynamic_performer::~Dynamic_performer ()
-{
+ script_req_ = 0;
+ audio_ = 0;
}
void
-Dynamic_performer::do_print () const
+Dynamic_performer::create_audio_elements ()
{
-#ifndef NPRINT
- if (text_script_req_l_)
- text_script_req_l_->print ();
-#endif
-}
-
-void
-Dynamic_performer::do_process_music ()
-{
- if (text_script_req_l_)
+ if (script_req_)
{
+ SCM proc = get_property ("dynamicAbsoluteVolumeFunction");
+
+ SCM svolume = SCM_EOL;
+ if (gh_procedure_p (proc))
+ {
+ // urg
+ svolume = gh_call1 (proc, script_req_->get_mus_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 (gh_number_p (min) || gh_number_p (max))
+ {
+ Interval iv (0, 1);
+ if (gh_number_p (min))
+ iv[MIN] = gh_scm2double (min);
+ if (gh_number_p (max))
+ iv[MAX] = gh_scm2double (max);
+ volume = iv[MIN] + iv.length () * volume;
+ }
+ else
+ {
+ /*
+ urg, code duplication:: staff_performer
+ */
+ SCM s = get_property ("midiInstrument");
+
+ if (!gh_string_p (s))
+ s = get_property ("instrument");
+
+ if (!gh_string_p (s))
+ s = scm_makfrom0str ("piano");
+
+
+ SCM eq = get_property ("instrumentEqualizer");
+ if (gh_procedure_p (eq))
+ {
+ s = gh_call1 (eq, s);
+ }
+
+ if (is_number_pair (s))
+ {
+ Interval iv = ly_scm2interval (s);
+ volume = iv[MIN] + iv.length () * volume;
+ }
+ }
- SCM s = scm_eval
- (gh_list
- (ly_symbol2scm ("dynamic-absolute-volume"),
- ly_quote_scm (ly_str02scm (text_script_req_l_->text_str_.ch_C ())),
- SCM_UNDEFINED));
- int volume = gh_scm2int (ly_eval_str ("dynamic-default-volume"));
- if (gh_number_p (s))
- volume = gh_scm2int (s);
-
- audio_p_ = new Audio_dynamic (volume);
- Audio_element_info info (audio_p_, text_script_req_l_);
+ audio_ = new Audio_dynamic (volume);
+ Audio_element_info info (audio_, script_req_);
announce_element (info);
- text_script_req_l_ = 0;
+ script_req_ = 0;
}
}
void
-Dynamic_performer::do_pre_move_processing ()
+Dynamic_performer::stop_translation_timestep ()
{
- if (audio_p_)
+ if (audio_)
{
- play_element (audio_p_);
- audio_p_ = 0;
+ play_element (audio_);
+ audio_ = 0;
}
}
bool
-Dynamic_performer::do_try_music (Music* r)
+Dynamic_performer::try_music (Music* r)
{
- if (!text_script_req_l_)
+ if (!script_req_)
{
- // urg, text script, style `dynamic' is how absolute dynamics appear
- if(Text_script_req* t = dynamic_cast <Text_script_req*> (r))
+ if (r->is_mus_type ("absolute-dynamic-event")) // fixme.
{
- if (t->style_str_ == "dynamic")
- {
- text_script_req_l_ = t;
- return true;
- }
+ script_req_ = r;
+ return true;
}
}
return false;
}
+ENTER_DESCRIPTION(Dynamic_performer,
+ /*descr*/ "",
+ /* creats*/ "",
+ /* accepts */ "absolute-dynamic-event",
+ /* acks */ "",
+ /*reads */"dynamicAbsoluteVolumeFunction midiMaximumVolume midiMinimumVolume midiInstrument instrumentEqualizer",
+ /*writes*/"");