From 94cefdb78044e0f9996e3032de34b690de98b708 Mon Sep 17 00:00:00 2001
From: tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>
Date: Thu, 23 Jul 2009 12:34:07 +0000
Subject: - revert to 1777 - Ocean.ini and SVN properties are not reverted

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@1854 b956fd51-792f-4845-bead-9b4dfca2ff2c
---
 unicode/src/base/UMusic.pas | 134 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 132 insertions(+), 2 deletions(-)

(limited to 'unicode/src/base/UMusic.pas')

diff --git a/unicode/src/base/UMusic.pas b/unicode/src/base/UMusic.pas
index 5fc9805f..19c3b942 100644
--- a/unicode/src/base/UMusic.pas
+++ b/unicode/src/base/UMusic.pas
@@ -36,8 +36,7 @@ interface
 uses
   UTime,
   SysUtils,
-  Classes,
-  UBeatTimer;
+  Classes;
 
 type
   TNoteType = (ntFreestyle, ntNormal, ntGolden);
@@ -100,6 +99,51 @@ type
     Line:       array of TLine;
   end;
 
+  (**
+   * TLyricsState contains all information concerning the
+   * state of the lyrics, e.g. the current beat or duration of the lyrics.
+   *)
+  TLyricsState = class
+    private
+      Timer:        TRelativeTimer; // keeps track of the current time
+    public
+      OldBeat:      integer;    // previous discovered beat
+      CurrentBeat:  integer;    // current beat (rounded)
+      MidBeat:      real;       // current beat (float)
+
+      // now we use this for super synchronization!
+      // only used when analyzing voice
+      // TODO: change ...D to ...Detect(ed)
+      OldBeatD:     integer;    // previous discovered beat
+      CurrentBeatD: integer;    // current discovered beat (rounded)
+      MidBeatD:     real;       // current discovered beat (float)
+
+      // we use this for audible clicks
+      // TODO: Change ...C to ...Click
+      OldBeatC:     integer;    // previous discovered beat
+      CurrentBeatC: integer;
+      MidBeatC:     real;       // like CurrentBeatC
+
+      OldLine:      integer;    // previous displayed sentence
+
+      StartTime:    real;       // time till start of lyrics (= Gap)
+      TotalTime:    real;       // total song time
+
+      constructor Create();
+      procedure Pause();
+      procedure Resume();
+
+      procedure Reset();
+      procedure UpdateBeats();
+
+      (**
+       * current song time (in seconds) used as base-timer for lyrics etc.
+       *)
+      function GetCurrentTime(): real;
+      procedure SetCurrentTime(Time: real);
+  end;
+
+
 const
   FFTSize = 512; // size of FFT data (output: FFTSize/2 values)
 type
@@ -933,6 +977,92 @@ begin
   end;
 end;
 
+
+{ TVoiceRemoval }
+
+constructor TLyricsState.Create();
+begin
+  // create a triggered timer, so we can Pause() it, set the time
+  // and Resume() it afterwards for better synching.
+  Timer := TRelativeTimer.Create(true);
+
+  // reset state
+  Reset();
+end;
+
+procedure TLyricsState.Pause();
+begin
+  Timer.Pause();
+end;
+
+procedure TLyricsState.Resume();
+begin
+  Timer.Resume();
+end;
+
+procedure TLyricsState.SetCurrentTime(Time: real);
+begin
+  // do not start the timer (if not started already),
+  // after setting the current time
+  Timer.SetTime(Time, false);
+end;
+
+function TLyricsState.GetCurrentTime(): real;
+begin
+  Result := Timer.GetTime();
+end;
+
+(**
+ * Resets the timer and state of the lyrics.
+ * The timer will be stopped afterwards so you have to call Resume()
+ * to start the lyrics timer. 
+ *)
+procedure TLyricsState.Reset();
+begin
+  Pause();
+  SetCurrentTime(0);
+
+  StartTime := 0;
+  TotalTime := 0;
+
+  OldBeat      := -1;
+  MidBeat      := -1;
+  CurrentBeat  := -1;
+
+  OldBeatC     := -1;
+  MidBeatC     := -1;
+  CurrentBeatC := -1;
+
+  OldBeatD     := -1;
+  MidBeatD     := -1;
+  CurrentBeatD := -1;
+end;
+
+(**
+ * Updates the beat information (CurrentBeat/MidBeat/...) according to the
+ * current lyric time.
+ *)
+procedure TLyricsState.UpdateBeats();
+var
+  CurLyricsTime: real;
+begin
+  CurLyricsTime := GetCurrentTime();
+
+  OldBeat := CurrentBeat;
+  MidBeat := GetMidBeat(CurLyricsTime - StartTime / 1000);
+  CurrentBeat := Floor(MidBeat);
+
+  OldBeatC := CurrentBeatC;
+  MidBeatC := GetMidBeat(CurLyricsTime - StartTime / 1000);
+  CurrentBeatC := Floor(MidBeatC);
+
+  OldBeatD := CurrentBeatD;
+  // MidBeatD = MidBeat with additional GAP
+  MidBeatD := -0.5 + GetMidBeat(CurLyricsTime - (StartTime + 120 + 20) / 1000);
+  CurrentBeatD := Floor(MidBeatD);
+end;
+
+
 { TAudioConverter }
 
 function TAudioConverter.Init(SrcFormatInfo: TAudioFormatInfo; DstFormatInfo: TAudioFormatInfo): boolean;
-- 
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