X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fdynamic-performer.cc;h=cc6936a475b0759030d8301065fe87df9783d955;hb=754d360118e26e2e48ec080849d9c0f94d1c7416;hp=7818776d04478d95696cc99a9c57bea77c5d5239;hpb=5cbe821608ec464ea8f418cba15f012b9b1cad80;p=lilypond.git

diff --git a/lily/dynamic-performer.cc b/lily/dynamic-performer.cc
index 7818776d04..cc6936a475 100644
--- a/lily/dynamic-performer.cc
+++ b/lily/dynamic-performer.cc
@@ -3,83 +3,69 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  2000 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
 #include "performer.hh"
-#include "command-request.hh"
-#include "musical-request.hh"
+
+#include "event.hh"
 #include "audio-item.hh"
 
 /*
   TODO:
-    handle multiple requests
- */
+  
+    handle multiple events
 
-/**
-   perform absolute (text) dynamics
+    perform absolute (text) dynamics
  */
 class Dynamic_performer : public Performer
 {
 public:
-  VIRTUAL_COPY_CONS (Translator);
-  
-  Dynamic_performer ();
-  ~Dynamic_performer ();
-
+  TRANSLATOR_DECLARATIONS (Dynamic_performer);
 protected:
-  virtual bool do_try_music (Music* req_l);
-  virtual void do_process_music ();
-  virtual void do_pre_move_processing ();
+  virtual bool try_music (Music* req);
+  virtual void stop_translation_timestep ();
+  virtual void create_audio_elements ();
 
 private:
-  Music* script_req_l_;
-  Audio_dynamic* audio_p_;
+  Music* script_req_;
+  Audio_dynamic* audio_;
 };
 
-ADD_THIS_TRANSLATOR (Dynamic_performer);
-
 Dynamic_performer::Dynamic_performer ()
 {
-  script_req_l_ = 0;
-  audio_p_ = 0;
+  script_req_ = 0;
+  audio_ = 0;
 }
 
-Dynamic_performer::~Dynamic_performer ()
-{
-}
-
-
 void
-Dynamic_performer::do_process_music ()
+Dynamic_performer::create_audio_elements ()
 {
-  if (script_req_l_)
+  if (script_req_)
     {
       SCM proc = get_property ("dynamicAbsoluteVolumeFunction");
 
       SCM svolume  = SCM_EOL;
-      if (gh_procedure_p (proc))
+      if (ly_c_procedure_p (proc))
 	{
 	  // urg
-	  svolume = gh_call1 (proc, script_req_l_->get_mus_property ("text"));
+	  svolume = scm_call_1 (proc, script_req_->get_property ("text"));
 	}
 
-      Real volume = 0.5; 
-      if (gh_number_p (svolume))
-	volume = gh_scm2double (svolume);
+      Real volume = robust_scm2double (svolume, 0.5); 
 
       /*
 	properties override default equaliser setting
        */
       SCM min = get_property ("midiMinimumVolume");
       SCM max = get_property ("midiMaximumVolume");
-      if (gh_number_p (min) || gh_number_p (max))
+      if (scm_is_number (min) || scm_is_number (max))
 	{
 	  Interval iv (0, 1);
-	  if (gh_number_p (min))
-	    iv[MIN] = gh_scm2double (min);
-	  if (gh_number_p (max))
-	    iv[MAX] = gh_scm2double (max);
+	  if (scm_is_number (min))
+	    iv[MIN] = scm_to_double (min);
+	  if (scm_is_number (max))
+	    iv[MAX] = scm_to_double (max);
 	  volume = iv[MIN] + iv.length () * volume;
 	}
       else
@@ -89,57 +75,61 @@ Dynamic_performer::do_process_music ()
 	  */
 	  SCM s = get_property ("midiInstrument");
 	  
-	  if (!gh_string_p(s))
+	  if (!scm_is_string (s))
 	    s = get_property ("instrument");
 	  
-	  if (!gh_string_p(s))
-	    s = ly_str02scm ("piano");
+	  if (!scm_is_string (s))
+	    s = scm_makfrom0str ("piano");
 	  
 	  
 	  SCM eq = get_property ("instrumentEqualizer");
-	  if (gh_procedure_p (eq))
+	  if (ly_c_procedure_p (eq))
 	    {
-	      s = gh_call1 (eq, s);
+	      s = scm_call_1 (eq, s);
 	    }
 
-	  if (gh_pair_p (s))
+	  if (is_number_pair (s))
 	    {
-	      Interval iv;
-	      iv[MIN] = gh_scm2double (gh_car (s));
-	      iv[MAX] = gh_scm2double (gh_cdr (s));
+	      Interval iv = ly_scm2interval (s);
 	      volume = iv[MIN] + iv.length () * volume;
 	    }
 	}
       
-      audio_p_ = new Audio_dynamic (volume);
-      Audio_element_info info (audio_p_, script_req_l_);
+      audio_ = new Audio_dynamic (volume);
+      Audio_element_info info (audio_, script_req_);
       announce_element (info);
-      script_req_l_ = 0;
+      script_req_ = 0;
     }
 }
 
 void
-Dynamic_performer::do_pre_move_processing ()
+Dynamic_performer::stop_translation_timestep ()
 {
-  if (audio_p_)
+  if (audio_)
     {
-      play_element (audio_p_);
-      audio_p_ = 0;
+      play_element (audio_);
+      audio_ = 0;
     }
 }
 
 bool
-Dynamic_performer::do_try_music (Music* r)
+Dynamic_performer::try_music (Music* r)
 {
-  if (!script_req_l_)
+  if (!script_req_)
     {
-      if( dynamic_cast <Text_script_req*> (r)
-	  && r->get_mus_property ("text-type") == ly_symbol2scm ("dynamic"))
+      if (r->is_mus_type ("absolute-dynamic-event")) // fixme.
 	{
-	  script_req_l_ = r;
+	  script_req_ = r;
 	  return true;
 	}
     }
   return false;
 }
 
+ENTER_DESCRIPTION (Dynamic_performer,
+		  /*descr*/		  "",
+		  /* creats*/ "",
+		  /* accepts */     "absolute-dynamic-event",
+		  /* acks */ "",
+		  /*reads */"dynamicAbsoluteVolumeFunction midiMaximumVolume midiMinimumVolume midiInstrument instrumentEqualizer",
+		  /*writes*/"");