2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 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/>.
23 #include "audio-column.hh"
24 #include "audio-item.hh"
25 #include "audio-staff.hh"
27 #include "international.hh"
28 #include "performer-group.hh"
31 /* Perform a staff. Individual notes should have their instrument
32 (staff-wide) set, so we override play_element ()
34 class Staff_performer : public Performer
37 TRANSLATOR_DECLARATIONS (Staff_performer);
41 virtual void acknowledge_audio_element (Audio_element_info info);
42 virtual void finalize ();
43 virtual void initialize ();
44 void process_music ();
45 void stop_translation_timestep ();
48 string new_instrument_string ();
49 void set_instrument_name (const string &voice);
50 void set_instrument (int channel, const string &voice);
51 int get_channel (const string &instrument);
52 Audio_staff *get_audio_staff (const string &voice);
53 Audio_staff *new_audio_staff (const string &voice);
54 Audio_dynamic *get_dynamic (const string &voice);
56 string instrument_string_;
58 Audio_instrument *instrument_;
59 Audio_text *instrument_name_;
62 map<string, deque<Audio_note *> > note_map_;
63 map<string, Audio_staff *> staff_map_;
64 map<string, int> channel_map_;
65 map<string, Audio_dynamic *> dynamic_map_;
66 // Would prefer to have the following two items be
67 // members of the containing class Performance,
68 // so they can be reset for each new midi file output.
69 static map<string, int> static_channel_map_;
70 static int channel_count_;
71 // For now, ask the last Staff_performer clean up during its finalize method
72 static int staff_performer_count_;
75 map<string, int> Staff_performer::static_channel_map_;
76 int Staff_performer::channel_count_ = 0;
77 int Staff_performer::staff_performer_count_ = 0;
79 #include "translator.icc"
81 ADD_TRANSLATOR (Staff_performer,
94 Staff_performer::Staff_performer ()
103 Staff_performer::~Staff_performer ()
108 Staff_performer::initialize ()
110 ++staff_performer_count_;
114 Staff_performer::new_audio_staff (const string &voice)
116 Audio_staff *audio_staff = new Audio_staff;
117 audio_staff->merge_unisons_
118 = to_boolean (get_property ("midiMergeUnisons"));
119 string track_name = context ()->id_string () + ":" + voice;
120 if (track_name != ":")
122 name_ = new Audio_text (Audio_text::TRACK_NAME, context ()->id_string ()
124 audio_staff->add_audio_item (name_);
125 announce_element (Audio_element_info (name_, 0));
127 announce_element (Audio_element_info (audio_staff, 0));
128 staff_map_[voice] = audio_staff;
129 if (!instrument_string_.empty ())
130 set_instrument (channel_, voice);
135 Staff_performer::get_audio_staff (const string &voice)
137 SCM channel_mapping = get_property ("midiChannelMapping");
138 if (channel_mapping != ly_symbol2scm ("instrument")
139 && staff_map_.size ())
140 return staff_map_.begin ()->second;
142 map<string, Audio_staff *>::const_iterator i = staff_map_.find (voice);
143 if (i != staff_map_.end ())
145 map<string, Audio_staff *>::const_iterator e = staff_map_.find ("");
146 if (staff_map_.size () == 1 && e != staff_map_.end ())
148 staff_map_[voice] = e->second;
151 return new_audio_staff (voice);
155 Staff_performer::get_dynamic (const string &voice)
157 map<string, Audio_dynamic *>::const_iterator i = dynamic_map_.find (voice);
158 if (i != dynamic_map_.end ())
164 Staff_performer::process_music ()
169 Staff_performer::set_instrument (int channel, const string &voice)
171 instrument_ = new Audio_instrument (instrument_string_);
172 instrument_->channel_ = channel;
173 announce_element (Audio_element_info (instrument_, 0));
174 Audio_staff *audio_staff = get_audio_staff (voice);
175 audio_staff->add_audio_item (instrument_);
176 SCM proc = ly_lily_module_constant ("percussion?");
177 SCM drums = scm_call_1 (proc, ly_symbol2scm (instrument_string_.c_str ()));
178 audio_staff->percussion_ = (drums == SCM_BOOL_T);
182 Staff_performer::set_instrument_name (const string &voice)
184 instrument_name_ = new Audio_text (Audio_text::INSTRUMENT_NAME,
186 announce_element (Audio_element_info (instrument_name_, 0));
187 get_audio_staff (voice)->add_audio_item (instrument_name_);
191 Staff_performer::stop_translation_timestep ()
195 instrument_name_ = 0;
197 // For each voice with a note played in the current translation time step,
198 // check if the voice has an Audio_dynamic registered: if yes, apply this
199 // dynamic to every note played in the voice in the current translation time
201 for (map<string, deque<Audio_note *> >::iterator vi = note_map_.begin ();
202 vi != note_map_.end (); ++vi)
204 Audio_dynamic *d = get_dynamic (vi->first);
207 for (deque<Audio_note *>::iterator ni = vi->second.begin ();
208 ni != vi->second.end (); ++ni)
216 Staff_performer::finalize ()
219 channel_map_.clear ();
220 if (staff_performer_count_)
221 --staff_performer_count_;
222 if (0 == staff_performer_count_)
224 static_channel_map_.clear ();
230 Staff_performer::new_instrument_string ()
232 // mustn't ask Score for instrument: it will return piano!
233 SCM minstr = get_property ("midiInstrument");
235 if (!scm_is_string (minstr)
236 || ly_scm2string (minstr) == instrument_string_)
239 instrument_string_ = ly_scm2string (minstr);
241 return instrument_string_;
245 Staff_performer::get_channel (const string &instrument)
247 SCM channel_mapping = get_property ("midiChannelMapping");
248 map<string, int> &channel_map
249 = (channel_mapping != ly_symbol2scm ("instrument"))
251 : static_channel_map_;
253 if (channel_mapping == ly_symbol2scm ("staff")
257 map<string, int>::const_iterator i = channel_map.find (instrument);
258 if (i != channel_map.end ())
261 int channel = (channel_mapping == ly_symbol2scm ("staff"))
263 : channel_map.size ();
265 /* MIDI players tend to ignore instrument settings on channel
266 10, the percussion channel. */
267 if (channel % 16 == 9)
269 channel_map["percussion"] = channel++;
275 warning (_ ("MIDI channel wrapped around"));
276 warning (_ ("remapping modulo 16"));
277 channel = channel % 16;
280 channel_map[instrument] = channel;
285 Staff_performer::acknowledge_audio_element (Audio_element_info inf)
287 if (Audio_item *ai = dynamic_cast<Audio_item *> (inf.elem_))
289 /* map each context (voice) to its own track */
290 Context *c = inf.origin_contexts (this)[0];
292 if (c->is_alias (ly_symbol2scm ("Voice")))
293 voice = c->id_string ();
294 SCM channel_mapping = get_property ("midiChannelMapping");
295 string str = new_instrument_string ();
296 if (channel_mapping != ly_symbol2scm ("instrument"))
297 channel_ = get_channel (voice);
298 else if (channel_ < 0 && str.empty ())
299 channel_ = get_channel (str);
302 if (channel_mapping != ly_symbol2scm ("voice"))
303 channel_ = get_channel (str);
304 set_instrument (channel_, voice);
305 set_instrument_name (voice);
307 ai->channel_ = channel_;
308 bool encode_dynamics_as_velocity_ = true;
309 if (encode_dynamics_as_velocity_)
311 if (Audio_note *n = dynamic_cast<Audio_note *> (inf.elem_))
313 // Keep track of the notes played in the current voice in this
314 // translation time step (for adjusting their dynamics later in
315 // stop_translation_timestep).
316 note_map_[voice].push_back (n);
318 else if (Audio_dynamic *d = dynamic_cast<Audio_dynamic *> (inf.elem_))
320 dynamic_map_[voice] = d;
321 // Output volume as velocity: must disable Midi_dynamic output
325 Audio_staff *audio_staff = get_audio_staff (voice);
326 audio_staff->add_audio_item (ai);