/*
staff-performer.cc -- implement Staff_performer
- (c) 1996, 1997 Jan Nieuwenhuizen <jan@digicash.com>
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1997--2004 Jan Nieuwenhuizen <janneke@gnu.org>
*/
+#include "warn.hh"
+#include "audio-column.hh"
+#include "audio-item.hh"
+#include "audio-staff.hh"
+#include "performer-group-performer.hh"
+#include "context.hh"
+
+/** Perform a staff. Individual notes should have their instrument
+ (staff-wide) set, so we override play_element ()
+
+ */
+class Staff_performer : public Performer_group_performer
+{
+public:
+ TRANSLATOR_DECLARATIONS (Staff_performer);
+ ~Staff_performer ();
+
+ String new_instrument_string ();
+ String instrument_string_;
-#include "staff-performer.hh"
-#include "translator.hh"
-#include "input-translator.hh"
-#include "debug.hh"
-#include "midi-def.hh"
-#include "midi-item.hh"
-#include "midi-stream.hh"
-#include "string.hh"
-#include "string-convert.hh"
+protected:
+ virtual void play_element (Audio_element* p);
+ virtual void finalize ();
+ virtual void initialize ();
+ virtual void create_audio_elements ();
+ virtual void stop_translation_timestep ();
+private:
+ Audio_staff* audio_staff_;
+ Audio_instrument* instrument_;
+ Audio_text* instrument_name_;
+ Audio_text* name_;
+ Audio_tempo* tempo_;
+};
-IMPLEMENT_IS_TYPE_B1(Staff_performer,Performer_group_performer);
-ADD_THIS_PERFORMER(Staff_performer);
+ADD_TRANSLATOR (Staff_performer, "", "",
+ "",
+ "", "", "");
-Staff_performer::Staff_performer()
+Staff_performer::Staff_performer ()
{
- midi_mom_ = 0;
- midi_track_p_ = new Midi_track;
+ audio_staff_ = 0;
+ instrument_ = 0;
+ instrument_name_ = 0;
+ name_ = 0;
+ tempo_ = 0;
}
+
+Staff_performer::~Staff_performer ()
+{
+}
+
void
-Staff_performer::do_creation_processing()
+Staff_performer::initialize ()
{
- header();
+ audio_staff_ = new Audio_staff;
+ announce_element (Audio_element_info (audio_staff_, 0));
+
+ name_ = new Audio_text (Audio_text::TRACK_NAME, context ()->id_string ());
+ announce_element (Audio_element_info (name_, 0));
+
+ tempo_ = new Audio_tempo (get_tempo ());
+ announce_element (Audio_element_info (tempo_, 0));
+
+ Performer_group_performer::initialize ();
}
void
-Staff_performer::do_removal_processing()
+Staff_performer::create_audio_elements ()
{
- Performer::play_event( midi_track_p_);
+ String str = new_instrument_string ();
+ if (str.length ())
+ {
+ instrument_name_ = new Audio_text (Audio_text::INSTRUMENT_NAME, str);
+ announce_element (Audio_element_info (instrument_name_, 0));
+ instrument_ = new Audio_instrument (str);
+ announce_element (Audio_element_info (instrument_, 0));
+
+ /*
+ Have to be here before notes arrive into the staff.
+ */
+ play_element (instrument_);
+ play_element (instrument_name_);
+ }
+ Performer_group_performer::create_audio_elements ();
}
-Staff_performer::~Staff_performer()
+void
+Staff_performer::stop_translation_timestep ()
{
- delete midi_track_p_;
+ SCM proc = ly_lily_module_constant ("percussion?");
+
+ SCM drums = scm_call_1 (proc, ly_symbol2scm (instrument_string_.to_str0 ()));
+ audio_staff_->channel_ = (drums == SCM_BOOL_T ? 9 : -1 );
+ if (name_)
+ {
+ play_element (name_);
+ name_ = 0;
+ }
+ if (tempo_)
+ {
+ play_element (tempo_);
+ tempo_ = 0;
+ }
+ instrument_name_ = 0;
+ instrument_ = 0;
+ Performer_group_performer::stop_translation_timestep ();
}
void
-Staff_performer::header()
+Staff_performer::finalize ()
{
- // set track name
- Midi_text track_name( Midi_text::TRACK_NAME, instrument_str());
- midi_track_p_->add( Moment( 0 ), &track_name );
-
- // set instrument description
- Midi_text instrument_name( Midi_text::INSTRUMENT_NAME, instrument_str() );
- midi_track_p_->add( Moment( 0 ), &instrument_name );
-
- // set instrument :-)
- // lieve wendy, nu heb je mijn track_i_ / get_staff_i weggehaald...
- // zie ook note-performer: ugh
- // ugh, need to know channel (===track===staff) too
- int channel_i = 0;
- Midi_instrument instrument( channel_i, instrument_str() );
- midi_track_p_->add( Moment( 0 ), &instrument );
-
- Midi_tempo midi_tempo( get_tempo_i( ) );
- midi_track_p_->add( Moment( 0 ), &midi_tempo );
+ Performer_group_performer::finalize ();
+ Performer::play_element (audio_staff_);
+ audio_staff_ = 0;
}
String
-Staff_performer::instrument_str()
+Staff_performer::new_instrument_string ()
{
- return Translator::id_str_;
+ // mustn't ask Score for instrument: it will return piano!
+ SCM minstr = get_property ("midiInstrument");
+
+ if (!scm_is_string (minstr)
+ || ly_scm2string (minstr) == instrument_string_)
+ return "";
+
+ instrument_string_ = ly_scm2string (minstr);
+
+ return instrument_string_;
}
void
-Staff_performer::play_event( Midi_item* l )
+Staff_performer::play_element (Audio_element* p)
{
- Moment mom = get_mom();
- Moment delta_t = mom - midi_mom_ ;
- midi_mom_ += delta_t;
- midi_track_p_->add( delta_t, l);
+ if (Audio_item *ai = dynamic_cast<Audio_item *> (p))
+ {
+ audio_staff_->add_audio_item (ai);
+ }
+ Performer::play_element (p);
}