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_primitive_eval (ly_symbol2scm ("percussion-p"));
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
);