2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2011 Jan Nieuwenhuizen <janneke@gnu.org>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
22 #include "audio-column.hh"
23 #include "audio-item.hh"
24 #include "audio-staff.hh"
26 #include "international.hh"
27 #include "performer-group.hh"
30 /* Perform a staff. Individual notes should have their instrument
31 (staff-wide) set, so we override play_element ()
33 class Staff_performer : public Performer
36 TRANSLATOR_DECLARATIONS (Staff_performer);
40 virtual void acknowledge_audio_element (Audio_element_info info);
41 virtual void finalize ();
42 virtual void initialize ();
43 void process_music ();
44 void stop_translation_timestep ();
47 string new_instrument_string ();
48 void set_instrument_name (string voice);
49 void set_instrument (int channel, string voice);
50 int get_channel (string instrument);
51 Audio_staff* get_audio_staff (string voice);
52 Audio_staff* new_audio_staff (string voice);
53 Audio_dynamic* get_dynamic (string voice);
55 string instrument_string_;
57 Audio_instrument *instrument_;
58 Audio_text *instrument_name_;
61 map<string, Audio_staff*> staff_map_;
62 map<string, int> channel_map_;
63 map<string, Audio_dynamic*> dynamic_map_;
64 static map<string, int> static_channel_map_;
65 static int channel_count_;
68 map<string, int> Staff_performer::static_channel_map_;
69 int Staff_performer::channel_count_ = 0;
71 #include "translator.icc"
73 ADD_TRANSLATOR (Staff_performer,
86 Staff_performer::Staff_performer ()
89 , instrument_name_ (0)
95 Staff_performer::~Staff_performer ()
100 Staff_performer::initialize ()
105 Staff_performer::new_audio_staff (string voice)
107 Audio_staff* audio_staff = new Audio_staff;
108 audio_staff->merge_unisons_
109 = to_boolean (get_property ("midiMergeUnisons"));
110 string track_name = context ()->id_string () + ":" + voice;
111 if (track_name != ":")
113 name_ = new Audio_text (Audio_text::TRACK_NAME, context ()->id_string ()
115 audio_staff->add_audio_item (name_);
116 announce_element (Audio_element_info (name_, 0));
118 announce_element (Audio_element_info (audio_staff, 0));
119 staff_map_[voice] = audio_staff;
120 if (!instrument_string_.empty ())
121 set_instrument (channel_, voice);
126 Staff_performer::get_audio_staff (string voice)
128 SCM channel_mapping = get_property ("midiChannelMapping");
129 if (channel_mapping != ly_symbol2scm ("instrument")
130 && staff_map_.size ())
131 return staff_map_.begin ()->second;
133 map<string, Audio_staff*>::const_iterator i = staff_map_.find (voice);
134 if (i != staff_map_.end ())
136 map<string, Audio_staff*>::const_iterator e = staff_map_.find ("");
137 if (staff_map_.size () == 1 && e != staff_map_.end ())
139 staff_map_[voice] = e->second;
142 return new_audio_staff (voice);
146 Staff_performer::get_dynamic (string voice)
148 map<string, Audio_dynamic*>::const_iterator i = dynamic_map_.find (voice);
149 if (i != dynamic_map_.end ())
155 Staff_performer::process_music ()
160 Staff_performer::set_instrument (int channel, string voice)
162 instrument_ = new Audio_instrument (instrument_string_);
163 instrument_->channel_ = channel;
164 announce_element (Audio_element_info (instrument_, 0));
165 Audio_staff* audio_staff = get_audio_staff (voice);
166 audio_staff->add_audio_item (instrument_);
167 SCM proc = ly_lily_module_constant ("percussion?");
168 SCM drums = scm_call_1 (proc, ly_symbol2scm (instrument_string_.c_str ()));
169 audio_staff->percussion_ = (drums == SCM_BOOL_T);
173 Staff_performer::set_instrument_name (string voice)
175 instrument_name_ = new Audio_text (Audio_text::INSTRUMENT_NAME,
177 announce_element (Audio_element_info (instrument_name_, 0));
178 get_audio_staff (voice)->add_audio_item (instrument_name_);
182 Staff_performer::stop_translation_timestep ()
186 instrument_name_ = 0;
191 Staff_performer::finalize ()
194 channel_map_.clear ();
198 Staff_performer::new_instrument_string ()
200 // mustn't ask Score for instrument: it will return piano!
201 SCM minstr = get_property ("midiInstrument");
203 if (!scm_is_string (minstr)
204 || ly_scm2string (minstr) == instrument_string_)
207 instrument_string_ = ly_scm2string (minstr);
209 return instrument_string_;
213 Staff_performer::get_channel (string instrument)
215 SCM channel_mapping = get_property ("midiChannelMapping");
216 map<string, int>& channel_map
217 = (channel_mapping != ly_symbol2scm ("instrument"))
219 : static_channel_map_;
221 if (channel_mapping == ly_symbol2scm ("staff")
225 map<string, int>::const_iterator i = channel_map.find (instrument);
226 if (i != channel_map.end ())
229 int channel = (channel_mapping == ly_symbol2scm ("staff"))
231 : channel_map.size ();
233 /* MIDI players tend to ignore instrument settings on channel
234 10, the percussion channel. */
235 if (channel % 16 == 9)
237 channel_map["percussion"] = channel++;
243 warning (_ ("MIDI channel wrapped around"));
244 warning (_ ("remapping modulo 16"));
245 channel = channel % 16;
248 channel_map[instrument] = channel;
253 Staff_performer::acknowledge_audio_element (Audio_element_info inf)
255 if (Audio_item *ai = dynamic_cast<Audio_item *> (inf.elem_))
257 /* map each context (voice) to its own track */
258 Context* c = inf.origin_contexts (this)[0];
260 if (c->is_alias (ly_symbol2scm ("Voice")))
261 voice = c->id_string ();
262 SCM channel_mapping = get_property ("midiChannelMapping");
263 string str = new_instrument_string ();
264 if (channel_mapping != ly_symbol2scm ("instrument"))
265 channel_ = get_channel (voice);
266 else if (channel_ < 0 && str.empty ())
267 channel_ = get_channel (str);
270 if (channel_mapping != ly_symbol2scm ("voice"))
271 channel_ = get_channel (str);
272 set_instrument (channel_, voice);
273 set_instrument_name (voice);
275 ai->channel_ = channel_;
276 bool encode_dynamics_as_velocity_ = true;
277 if (encode_dynamics_as_velocity_)
279 if (Audio_dynamic *d = dynamic_cast<Audio_dynamic *> (inf.elem_))
281 dynamic_map_[voice] = d;
282 // Output volume as velocity: must disable Midi_dynamic output
285 if (Audio_dynamic *d = get_dynamic (voice))
286 if (Audio_note *n = dynamic_cast<Audio_note *> (inf.elem_))
289 Audio_staff* audio_staff = get_audio_staff (voice);
290 audio_staff->add_audio_item (ai);