2 staff-performer.cc -- implement Staff_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "translator-group.hh"
11 #include "audio-column.hh"
12 #include "audio-item.hh"
13 #include "audio-staff.hh"
14 #include "performer-group-performer.hh"
16 /** Perform a staff. Individual notes should have their instrument
17 (staff-wide) set, so we override play_element ()
20 class Staff_performer : public Performer_group_performer
23 VIRTUAL_COPY_CONS (Translator);
29 String new_instrument_str ();
30 String instrument_str_;
33 virtual void play_element (Audio_element* p);
34 virtual void finalize ();
35 virtual void initialize ();
36 virtual void create_audio_elements ();
37 virtual void stop_translation_timestep ();
40 Audio_staff* audio_staff_p_;
41 Audio_instrument* instrument_p_;
42 Audio_text* instrument_name_p_;
44 Audio_tempo* tempo_p_;
47 ADD_THIS_TRANSLATOR (Staff_performer);
49 Staff_performer::Staff_performer ()
53 instrument_name_p_ = 0;
58 Staff_performer::~Staff_performer ()
63 Staff_performer::initialize ()
65 audio_staff_p_ = new Audio_staff;
66 announce_element (Audio_element_info (audio_staff_p_, 0));
68 name_p_ = new Audio_text (Audio_text::TRACK_NAME, id_str_);
69 announce_element (Audio_element_info (name_p_, 0));
71 tempo_p_ = new Audio_tempo (get_tempo_i ());
72 announce_element (Audio_element_info (tempo_p_, 0));
74 Performer_group_performer::initialize ();
78 Staff_performer::create_audio_elements ()
80 String str = new_instrument_str ();
83 instrument_name_p_ = new Audio_text (Audio_text::INSTRUMENT_NAME, str);
84 announce_element (Audio_element_info (instrument_name_p_, 0));
85 instrument_p_ = new Audio_instrument (str);
86 announce_element (Audio_element_info (instrument_p_, 0));
88 Performer_group_performer::create_audio_elements ();
92 Staff_performer::stop_translation_timestep ()
94 SCM proc = scm_eval2 (ly_symbol2scm ("percussion-p"), SCM_EOL);
95 SCM drums_p = gh_call1 (proc, ly_symbol2scm (instrument_str_.ch_C()));
96 audio_staff_p_->channel_i_ = (drums_p == SCM_BOOL_T ? 9 : -1 );
99 play_element (name_p_);
104 play_element (tempo_p_);
107 if (instrument_name_p_)
109 play_element (instrument_name_p_);
110 instrument_name_p_ = 0;
114 play_element (instrument_p_);
117 Performer_group_performer::stop_translation_timestep ();
121 Staff_performer::finalize ()
123 Performer_group_performer::finalize ();
124 Performer::play_element (audio_staff_p_);
129 Staff_performer::new_instrument_str ()
131 // mustn't ask Score for instrument: it will return piano!
132 SCM minstr = get_property (ly_symbol2scm ("midiInstrument"));
134 if (!gh_string_p (minstr))
135 minstr = get_property (ly_symbol2scm ("instrument"));
137 if (!gh_string_p (minstr)
138 || ly_scm2string (minstr) == instrument_str_)
141 instrument_str_ = ly_scm2string (minstr);
143 return instrument_str_;
147 Staff_performer::play_element (Audio_element* p)
149 if (Audio_item *ai = dynamic_cast<Audio_item *> (p))
151 audio_staff_p_->add_audio_item (ai);
153 Performer::play_element (p);