/*
- staff-performer.cc -- implement Staff_performer
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2011 Jan Nieuwenhuizen <janneke@gnu.org>
- (c) 1997--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <map>
+
#include "warn.hh"
#include "audio-column.hh"
#include "audio-item.hh"
#include "audio-staff.hh"
-#include "performer-group-performer.hh"
+#include "performer-group.hh"
#include "context.hh"
-/** Perform a staff. Individual notes should have their instrument
- (staff-wide) set, so we override play_element ()
+/* Perform a staff. Individual notes should have their instrument
+ (staff-wide) set, so we override play_element ()
*/
-class Staff_performer : public Performer_group_performer
+class Staff_performer : public Performer
{
public:
TRANSLATOR_DECLARATIONS (Staff_performer);
~Staff_performer ();
- String new_instrument_string ();
- String instrument_string_;
+ string new_instrument_string ();
+ string instrument_string_;
protected:
- virtual void play_element (Audio_element *p);
+ virtual void acknowledge_audio_element (Audio_element_info info);
virtual void finalize ();
virtual void initialize ();
- virtual void create_audio_elements ();
- virtual void stop_translation_timestep ();
+ void process_music ();
+ void stop_translation_timestep ();
+ void set_instrument_name ();
+ void set_instrument (int channel);
private:
Audio_staff *audio_staff_;
Audio_text *instrument_name_;
Audio_text *name_;
Audio_tempo *tempo_;
+ map<string, int> channel_map_;
};
-ADD_TRANSLATOR (Staff_performer, "", "",
+#include "translator.icc"
+
+ADD_TRANSLATOR (Staff_performer,
+ /* doc */
+ "",
+
+ /* create */
+ "",
+
+ /* read */
"",
- "", "", "");
+
+ /* write */
+ "");
Staff_performer::Staff_performer ()
{
Staff_performer::initialize ()
{
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 ();
+ audio_staff_->add_audio_item (name_);
+
+ announce_element (Audio_element_info (audio_staff_, 0));
+ announce_element (Audio_element_info (name_, 0));
}
void
-Staff_performer::create_audio_elements ()
+Staff_performer::process_music ()
{
- String str = new_instrument_string ();
+ 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_);
+ set_instrument (0);
+ set_instrument_name ();
}
- Performer_group_performer::create_audio_elements ();
+}
+
+void
+Staff_performer::set_instrument (int channel)
+{
+ instrument_ = new Audio_instrument (instrument_string_);
+ instrument_->channel_ = channel;
+ announce_element (Audio_element_info (instrument_, 0));
+ audio_staff_->add_audio_item (instrument_);
+}
+
+void
+Staff_performer::set_instrument_name ()
+{
+ instrument_name_ = new Audio_text (Audio_text::INSTRUMENT_NAME,
+ instrument_string_);
+ announce_element (Audio_element_info (instrument_name_, 0));
+ audio_staff_->add_audio_item (instrument_name_);
}
void
Staff_performer::stop_translation_timestep ()
{
SCM proc = ly_lily_module_constant ("percussion?");
+ SCM drums = scm_call_1 (proc, ly_symbol2scm (instrument_string_.c_str ()));
+ audio_staff_->percussion_ = (drums == SCM_BOOL_T);
- 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;
- }
+ name_ = 0;
+ tempo_ = 0;
instrument_name_ = 0;
instrument_ = 0;
- Performer_group_performer::stop_translation_timestep ();
}
void
Staff_performer::finalize ()
{
- Performer_group_performer::finalize ();
- Performer::play_element (audio_staff_);
audio_staff_ = 0;
}
-String
+string
Staff_performer::new_instrument_string ()
{
// mustn't ask Score for instrument: it will return piano!
}
void
-Staff_performer::play_element (Audio_element *p)
+Staff_performer::acknowledge_audio_element (Audio_element_info inf)
{
- if (Audio_item *ai = dynamic_cast<Audio_item *> (p))
+ if (Audio_item *ai = dynamic_cast<Audio_item *> (inf.elem_))
{
+ /* map each context (voice) to its own channel */
+ Context *c = inf.origin_contexts (this)[0];
+ string id = c->id_string ();
+ int channel = channel_map_.size ();
+ /* MIDI players tend to ignore instrument settings on channel
+ 10, the percussion channel. */
+ if (channel % 16 == 9)
+ channel_map_[""] = channel++;
+
+ map<string, int>::const_iterator i = channel_map_.find (id);
+ if (i != channel_map_.end ())
+ channel = i->second;
+ else
+ {
+ channel_map_[id] = channel;
+ if (channel)
+ set_instrument (channel);
+ }
+
+ ai->channel_ = channel;
audio_staff_->add_audio_item (ai);
}
- Performer::play_element (p);
}