/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 2004--2010 Han-Wen Nienhuys
+ Copyright (C) 2004--2015 Han-Wen Nienhuys
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "music-iterator.hh"
#include "music-sequence.hh"
#include "warn.hh"
-
-typedef enum Outlet_type
- {
- CONTEXT_ONE, CONTEXT_TWO,
- CONTEXT_SHARED, CONTEXT_SOLO,
- CONTEXT_NULL, NUM_OUTLETS
- };
-
-static const char *outlet_names_[NUM_OUTLETS] =
- {"one", "two", "shared", "solo", "null"};
+#include "lily-imports.hh"
class Part_combine_iterator : public Music_iterator
{
virtual bool ok () const;
private:
- /* used by try_process */
- DECLARE_LISTENER (set_busy);
- bool busy_;
- bool notice_busy_;
-
- bool try_process (Music_iterator *i, Moment m);
+ static const size_t NUM_PARTS = 2;
+ Music_iterator *iterators_[NUM_PARTS];
- Music_iterator *first_iter_;
- Music_iterator *second_iter_;
- Moment start_moment_;
-
- SCM split_list_;
-
- Stream_event *unisono_event_;
- Stream_event *solo_one_event_;
- Stream_event *solo_two_event_;
Stream_event *mmrest_event_;
- enum Status
- {
- APART,
- TOGETHER,
- SOLO1,
- SOLO2,
- UNISONO,
- UNISILENCE,
- };
- Status state_;
- Status playing_state_;
-
- /*
- Should be SOLO1 or SOLO2
- */
- Status last_playing_;
-
- /*
- TODO: this is getting of hand...
- */
- Context_handle handles_[NUM_OUTLETS];
-
- void substitute_both (Outlet_type to1,
- Outlet_type to2);
-
- /* parameter is really Outlet_type */
- void kill_mmrest (int in);
- void chords_together ();
- void solo1 ();
- void solo2 ();
- void apart (bool silent);
- void unisono (bool silent);
+ bool is_active_outlet (const Context *c) const;
+ void kill_mmrest (Context *c);
};
+const size_t Part_combine_iterator::NUM_PARTS;
+
void
Part_combine_iterator::do_quit ()
{
- if (first_iter_)
- first_iter_->quit ();
- if (second_iter_)
- second_iter_->quit ();
-
- // Add listeners to all contexts except Devnull.
- for (int i = 0; i < NUM_OUTLETS; i++)
- {
- Context *c = handles_[i].get_outlet ();
- if (c->is_alias (ly_symbol2scm ("Voice")))
- c->event_source ()->remove_listener (GET_LISTENER (set_busy), ly_symbol2scm ("music-event"));
- handles_[i].set_context (0);
- }
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ if (iterators_[i])
+ iterators_[i]->quit ();
}
Part_combine_iterator::Part_combine_iterator ()
{
mmrest_event_ = 0;
- unisono_event_ = 0;
- solo_two_event_ = 0;
- solo_one_event_= 0;
-
- first_iter_ = 0;
- second_iter_ = 0;
- split_list_ = SCM_EOL;
- state_ = APART;
- playing_state_ = APART;
+
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ iterators_[i] = 0;
}
void
Part_combine_iterator::derived_mark () const
{
- if (first_iter_)
- scm_gc_mark (first_iter_->self_scm ());
- if (second_iter_)
- scm_gc_mark (second_iter_->self_scm ());
-
- Stream_event *ptrs[] = {
- unisono_event_,
- mmrest_event_,
- solo_two_event_,
- solo_one_event_,
- 0
- };
- for (int i = 0; ptrs[i]; i++)
- if (ptrs[i])
- scm_gc_mark (ptrs[i]->self_scm ());
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ if (iterators_[i])
+ scm_gc_mark (iterators_[i]->self_scm ());
+
+ if (mmrest_event_)
+ scm_gc_mark (mmrest_event_->self_scm ());
}
void
Part_combine_iterator::derived_substitute (Context *f,
- Context *t)
+ Context *t)
{
- if (first_iter_)
- first_iter_->substitute_outlet (f, t);
+ // (Explain why just iterators_[0].)
+ if (iterators_[0])
+ iterators_[0]->substitute_outlet (f, t);
}
Moment
{
Moment p;
p.set_infinite (1);
- if (first_iter_->ok ())
- p = min (p, first_iter_->pending_moment ());
- if (second_iter_->ok ())
- p = min (p, second_iter_->pending_moment ());
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ if (iterators_[i]->ok ())
+ p = min (p, iterators_[i]->pending_moment ());
+
return p;
}
bool
Part_combine_iterator::ok () const
{
- return first_iter_->ok () || second_iter_->ok ();
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ if (iterators_[i]->ok ())
+ return true;
+
+ return false;
}
-void
-Part_combine_iterator::chords_together ()
+bool Part_combine_iterator::is_active_outlet (const Context *c) const
{
- if (state_ == TOGETHER)
- return;
- else
- {
- playing_state_ = TOGETHER;
- state_ = TOGETHER;
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ if (iterators_[i] && (iterators_[i]->get_outlet () == c))
+ return true;
- substitute_both (CONTEXT_SHARED, CONTEXT_SHARED);
- }
+ return false;
}
void
-Part_combine_iterator::kill_mmrest (int in)
+Part_combine_iterator::kill_mmrest (Context *c)
{
if (!mmrest_event_)
{
- mmrest_event_ = new Stream_event (ly_symbol2scm ("multi-measure-rest-event"));
+ mmrest_event_ = new Stream_event
+ (Lily::ly_make_event_class (ly_symbol2scm ("multi-measure-rest-event")));
mmrest_event_->set_property ("duration", SCM_EOL);
mmrest_event_->unprotect ();
}
- handles_[in].get_outlet ()->event_source ()->broadcast (mmrest_event_);
-}
-
-void
-Part_combine_iterator::solo1 ()
-{
- if (state_ == SOLO1)
- return;
- else
- {
- state_ = SOLO1;
- substitute_both (CONTEXT_SOLO, CONTEXT_NULL);
-
- kill_mmrest (CONTEXT_TWO);
- kill_mmrest (CONTEXT_SHARED);
-
- if (playing_state_ != SOLO1)
- {
- if (!solo_one_event_)
- {
- solo_one_event_ = new Stream_event (ly_symbol2scm ("solo-one-event"));
- solo_one_event_->unprotect ();
- }
-
- first_iter_->get_outlet ()->event_source ()->broadcast (solo_one_event_);
- }
- playing_state_ = SOLO1;
- }
-}
-
-void
-Part_combine_iterator::substitute_both (Outlet_type to1,
- Outlet_type to2)
-{
- Outlet_type tos[] = {to1, to2};
-
- Music_iterator *mis[] = {first_iter_, second_iter_};
-
- for (int i = 0; i < 2; i++)
- {
- for (int j = 0; j < NUM_OUTLETS; j++)
- if (j != tos[i])
- mis[i]->substitute_outlet (handles_[j].get_outlet (), handles_[tos[i]].get_outlet ());
- }
-
- for (int j = 0; j < NUM_OUTLETS; j++)
- {
- if (j != to1 && j != to2)
- kill_mmrest (j);
- }
-}
-
-void
-Part_combine_iterator::unisono (bool silent)
-{
- Status newstate = (silent) ? UNISILENCE : UNISONO;
-
- if (newstate == state_)
- return;
- else
- {
- /*
- If we're coming from SOLO2 state, we might have kill mmrests
- in the 1st voice, so in that case, we use the second voice
- as a basis for events.
- */
- Outlet_type c1 = (last_playing_ == SOLO2) ? CONTEXT_NULL : CONTEXT_SHARED;
- Outlet_type c2 = (last_playing_ == SOLO2) ? CONTEXT_SHARED : CONTEXT_NULL;
- substitute_both (c1, c2);
- kill_mmrest ((last_playing_ == SOLO2)
- ? CONTEXT_ONE : CONTEXT_TWO);
- kill_mmrest (CONTEXT_SHARED);
-
- if (playing_state_ != UNISONO
- && newstate == UNISONO)
- {
- if (!unisono_event_)
- {
- unisono_event_ = new Stream_event (ly_symbol2scm ("unisono-event"));
- unisono_event_->unprotect ();
- }
-
-
- Context *out = (last_playing_ == SOLO2 ? second_iter_ : first_iter_)
- ->get_outlet ();
- out->event_source ()->broadcast (unisono_event_);
- playing_state_ = UNISONO;
- }
- state_ = newstate;
- }
-}
-
-void
-Part_combine_iterator::solo2 ()
-{
- if (state_ == SOLO2)
- return;
- else
- {
- state_ = SOLO2;
-
- substitute_both (CONTEXT_NULL, CONTEXT_SOLO);
-
- if (playing_state_ != SOLO2)
- {
- if (!solo_two_event_)
- {
- solo_two_event_ = new Stream_event (ly_symbol2scm ("solo-two-event"));
- solo_two_event_->unprotect ();
- }
-
- second_iter_->get_outlet ()->event_source ()->broadcast (solo_two_event_);
- playing_state_ = SOLO2;
- }
- }
-}
-
-void
-Part_combine_iterator::apart (bool silent)
-{
- if (!silent)
- playing_state_ = APART;
-
- if (state_ == APART)
- return;
- else
- {
- state_ = APART;
- substitute_both (CONTEXT_ONE, CONTEXT_TWO);
- }
+ c->event_source ()->broadcast (mmrest_event_);
}
void
Part_combine_iterator::construct_children ()
{
- start_moment_ = get_outlet ()->now_mom ();
- split_list_ = get_music ()->get_property ("split-list");
-
- Context *c = get_outlet ();
-
- for (int i = 0; i < NUM_OUTLETS; i++)
- {
- SCM type = (i == CONTEXT_NULL) ? ly_symbol2scm ("Devnull") : ly_symbol2scm ("Voice");
- /* find context below c: otherwise we may create new staff for each voice */
- c = c->find_create_context (type, outlet_names_[i], SCM_EOL);
- handles_[i].set_context (c);
- if (c->is_alias (ly_symbol2scm ("Voice")))
- c->event_source ()->add_listener (GET_LISTENER (set_busy), ly_symbol2scm ("music-event"));
- }
-
SCM lst = get_music ()->get_property ("elements");
- Context *one = handles_[CONTEXT_ONE].get_outlet ();
- set_context (one);
- first_iter_ = unsmob_iterator (get_iterator (unsmob_music (scm_car (lst))));
- Context *two = handles_[CONTEXT_TWO].get_outlet ();
- set_context (two);
- second_iter_ = unsmob_iterator (get_iterator (unsmob_music (scm_cadr (lst))));
-
- char const *syms[]
- = {
- "Stem",
- "DynamicLineSpanner",
- "Tie",
- "Dots",
- "Rest",
- "Slur",
- "TextScript",
- "Script",
- 0
- };
-
- for (char const **p = syms; *p; p++)
- {
- SCM sym = ly_symbol2scm (*p);
- execute_pushpop_property (one, sym,
- ly_symbol2scm ("direction"), scm_from_int (1));
-
- execute_pushpop_property (two, sym,
- ly_symbol2scm ("direction"), scm_from_int (-1));
- }
-}
-
-IMPLEMENT_LISTENER (Part_combine_iterator, set_busy);
-void
-Part_combine_iterator::set_busy (SCM se)
-{
- if (!notice_busy_)
- return;
-
- Stream_event *e = unsmob_stream_event (se);
-
- if (e->in_event_class ("note-event") || e->in_event_class ("cluster-note-event"))
- busy_ = true;
-}
-
-/*
- Processes a moment in an iterator, and returns whether any new music
- was reported.
-*/
-bool
-Part_combine_iterator::try_process (Music_iterator *i, Moment m)
-{
- busy_ = false;
- notice_busy_ = true;
-
- i->process (m);
-
- notice_busy_ = false;
- return busy_;
+ iterators_[0] = unsmob<Music_iterator> (get_iterator (unsmob<Music> (scm_car (lst))));
+ iterators_[1] = unsmob<Music_iterator> (get_iterator (unsmob<Music> (scm_cadr (lst))));
}
void
Part_combine_iterator::process (Moment m)
{
- Moment now = get_outlet ()->now_mom ();
- Moment *splitm = 0;
-
- /* This is needed if construct_children was called before iteration
- started */
- if (start_moment_.main_part_.is_infinity () && start_moment_ < 0)
- start_moment_ = now;
-
- for (; scm_is_pair (split_list_); split_list_ = scm_cdr (split_list_))
+ Context *prev_active_outlets[NUM_PARTS];
+ bool any_outlet_changed = false;
+ for (size_t i = 0; i < NUM_PARTS; i++)
{
- splitm = unsmob_moment (scm_caar (split_list_));
- if (splitm && *splitm + start_moment_ > now)
- break;
-
- SCM tag = scm_cdar (split_list_);
-
- if (tag == ly_symbol2scm ("chords"))
- chords_together ();
- else if (tag == ly_symbol2scm ("apart")
- || tag == ly_symbol2scm ("apart-silence")
- || tag == ly_symbol2scm ("apart-spanner"))
- apart (tag == ly_symbol2scm ("apart-silence"));
- else if (tag == ly_symbol2scm ("unisono"))
- unisono (false);
- else if (tag == ly_symbol2scm ("unisilence"))
- unisono (true);
- else if (tag == ly_symbol2scm ("solo1"))
- solo1 ();
- else if (tag == ly_symbol2scm ("solo2"))
- solo2 ();
- else if (scm_is_symbol (tag))
- {
- string s = "Unknown split directive: "
- + (scm_is_symbol (tag) ? ly_symbol2string (tag) : string ("not a symbol"));
- programming_error (s);
- }
- }
+ prev_active_outlets[i] = iterators_[i]->get_outlet ();
- if (first_iter_->ok ())
- {
- if (try_process (first_iter_, m))
- last_playing_ = SOLO1;
+ if (iterators_[i]->ok ())
+ iterators_[i]->process (m);
+
+ if (prev_active_outlets[i] != iterators_[i]->get_outlet ())
+ any_outlet_changed = true;
}
- if (second_iter_->ok ())
+ if (any_outlet_changed)
{
- if (try_process (second_iter_, m))
- last_playing_ = SOLO2;
+ // Kill multi-measure rests in outlets that were previously active and
+ // are no longer active.
+ for (size_t i = 0; i < NUM_PARTS; i++)
+ {
+ Context *c = prev_active_outlets[i];
+ if (c && !is_active_outlet (c))
+ kill_mmrest (c);
+ }
}
}
projects / lilypond.git / blobdiff