2003 -> 2004

[lilypond.git] / lily / staff-performer.cc

diff --git a/lily/staff-performer.cc b/lily/staff-performer.cc
index 1ffffd7ab08d74cda72219f71775cfd414bc602e..859a9945bbc5aa4dc2fcaa34c414a4d43266bae5 100644 (file)
--- a/lily/staff-performer.cc
+++ b/lily/staff-performer.cc
@@ -1,79 +1,159 @@
 /*
   staff-performer.cc -- implement Staff_performer
 
-  (c) 1996, 1997 Jan Nieuwenhuizen <jan@digicash.com>
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1997--2004 Jan Nieuwenhuizen <janneke@gnu.org>
  */
 
+#include "translator-group.hh"
+#include "warn.hh"
+#include "audio-column.hh"
+#include "audio-item.hh"
+#include "audio-staff.hh"
+#include "performer-group-performer.hh"
+
+/** Perform a staff. Individual notes should have their instrument
+ (staff-wide) set, so we override play_element ()
+
+  */
+class Staff_performer : public Performer_group_performer 
+{
+public:
+  TRANSLATOR_DECLARATIONS(Staff_performer);
+  ~Staff_performer ();
+
+  String new_instrument_string ();
+  String instrument_string_;
+
+protected:
+  virtual void play_element (Audio_element* p);
+  virtual void finalize ();
+  virtual void initialize ();
+  virtual void create_audio_elements ();
+  virtual void stop_translation_timestep ();
 
-#include "staff-performer.hh"
-#include "translator.hh"
-#include "input-translator.hh"
-#include "debug.hh"
-#include "midi-def.hh"
-#include "midi-item.hh"
-#include "midi-stream.hh"
-#include "string.hh"
-#include "string-convert.hh"
+private:
+  Audio_staff* audio_staff_;
+  Audio_instrument* instrument_;
+  Audio_text* instrument_name_;
+  Audio_text* name_;
+  Audio_tempo* tempo_;
+};
 
-IMPLEMENT_STATIC_NAME(Staff_performer);
-IMPLEMENT_IS_TYPE_B1(Staff_performer,Performer_group_performer);
-ADD_THIS_PERFORMER(Staff_performer);
+ENTER_DESCRIPTION (Staff_performer, "", "",
+                  "",
+                  "", "", "");
 
-Staff_performer::Staff_performer()
+Staff_performer::Staff_performer ()
 {
-    midi_mom_ = 0;
-    track_i_ = 0;
-    midi_track_p_ = 0;
+  audio_staff_ = 0;
+  instrument_ = 0;
+  instrument_name_ = 0;
+  name_ = 0;
+  tempo_ = 0;
 }
 
-Staff_performer::~Staff_performer()
+Staff_performer::~Staff_performer ()
 {
-     delete midi_track_p_;
 }
 
 void
-Staff_performer::header()
+Staff_performer::initialize ()
 {
-    // set track name
-    Midi_text track_name( Midi_text::TRACK_NAME, "Track " + String_convert::i2dec_str( track_i_, 0, '0' ) );
-    midi_track_p_->add( Moment( 0 ), &track_name );
+  audio_staff_ = new Audio_staff;
+  announce_element (Audio_element_info (audio_staff_, 0));
 
-    // set instrument :-)
-    Midi_text instrument_name( Midi_text::INSTRUMENT_NAME, instrument_str() );
-    midi_track_p_->add( Moment( 0 ), &instrument_name );
+  name_ = new Audio_text (Audio_text::TRACK_NAME, id_string_);
+  announce_element (Audio_element_info (name_, 0));
 
-    Midi_tempo midi_tempo( midi_l_->get_tempo_i( Moment( 1, 4 ) ) );
-    midi_track_p_->add( Moment( 0 ), &midi_tempo );
-}
+  tempo_ = new Audio_tempo (get_tempo ());
+  announce_element (Audio_element_info (tempo_, 0));
 
-String 
-Staff_performer::instrument_str() 
-{ 
-    return Translator::id_str_; 
+  Performer_group_performer::initialize ();
 }
 
 void
-Staff_performer::midi_output( Midi_stream* midi_stream_l )
+Staff_performer::create_audio_elements ()
 {
-    *mlog << "[" << track_i_ << "]";
-    *midi_stream_l << *midi_track_p_;
+  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));
+    }
+  Performer_group_performer::create_audio_elements ();
 }
 
-void 
-Staff_performer::play_event( Midi_item* l )
+void
+Staff_performer::stop_translation_timestep ()
 {
-    Moment mom = get_mom();
-    Moment delta_t = mom - midi_mom_ ;
-    midi_mom_ += delta_t;
-    midi_track_p_->add( delta_t, l );    
+  /*
+    UGH. -> don't use eval.
+  */
+  
+  static SCM proc;
+
+  if (!proc)
+    proc = scm_primitive_eval (ly_symbol2scm ("percussion?"));
+  
+  SCM drums = gh_call1 (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;
+    }
+  if (instrument_name_)
+    {
+      play_element (instrument_name_);
+      instrument_name_ = 0;
+    }
+  if (instrument_)
+    {
+      play_element (instrument_);
+      instrument_ = 0;
+    }
+  Performer_group_performer::stop_translation_timestep ();
 }
 
 void
-Staff_performer::set_track( Midi_def* midi_l, int& track_i_r ) 
+Staff_performer::finalize ()
+{
+  Performer_group_performer::finalize ();
+  Performer::play_element (audio_staff_);
+  audio_staff_ = 0;
+}
+
+String 
+Staff_performer::new_instrument_string () 
 { 
-    midi_l_ = midi_l;
-    track_i_ = track_i_r++;
-    midi_track_p_ = new Midi_track( track_i_ );
-    header();
+  // mustn't ask Score for instrument: it will return piano!
+  SCM minstr = get_property ("midiInstrument");
+
+  if (!gh_string_p (minstr)
+      || ly_scm2string (minstr) == instrument_string_)
+    return "";
+
+  instrument_string_ = ly_scm2string (minstr);
+
+  return instrument_string_;
+}
+
+void 
+Staff_performer::play_element (Audio_element* p)
+{
+  if (Audio_item *ai = dynamic_cast<Audio_item *> (p)) 
+    {
+      audio_staff_->add_audio_item (ai);
+    }
+  Performer::play_element (p);
 }