- fixed video-background

- fixed buggy SkipTime (using TRelativeTimer now)
- TLineState is a class now. TLineState.CurrentTime is now automatically updated using TRelativeTimer

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1088 b956fd51-792f-4845-bead-9b4dfca2ff2c

4 files changed, 134 insertions, 55 deletions

diff --git a/Game/Code/Classes/UAudioDecoder_FFMpeg.pas b/Game/Code/Classes/UAudioDecoder_FFMpeg.pas
index f1c9b364..2a9b7518 100644
--- a/Game/Code/Classes/UAudioDecoder_FFMpeg.pas
+++ b/Game/Code/Classes/UAudioDecoder_FFMpeg.pas
@@ -102,6 +102,7 @@ type
       seekRequest: boolean;
       seekFlags  : integer;
       seekPos    : int64;
+      seekCond   : PSDL_Cond;
 
       parseThread: PSDL_Thread;
       packetQueue: TPacketQueue;
@@ -221,6 +222,7 @@ begin
   decoderLock := SDL_CreateMutex();
   parserLock := SDL_CreateMutex();
   resumeCond := SDL_CreateCond();
+  seekCond := SDL_CreateCond();
 
   parseThread := SDL_CreateThread(@DecodeThreadMain, Self);
 end;
@@ -278,7 +280,7 @@ begin
   // abort parse-thread
   LockParser();
   quitRequest := true;
-  SDL_CondSignal(resumeCond);
+  SDL_CondBroadcast(resumeCond);
   UnlockParser();
   // and wait until it terminates
   if (parseThread <> nil) then
@@ -355,6 +357,22 @@ begin
   UnlockDecoder();
 end;
 
+(*
+procedure TFFMpegDecodeStream.SetError(state: boolean);
+begin
+  LockDecoder();
+  ErrorState := state;
+  UnlockDecoder();
+end;
+
+function TFFMpegDecodeStream.IsSeeking(): boolean;
+begin
+  LockDecoder();
+  Result := seekRequest;
+  UnlockDecoder();
+end;
+*)
+
 function TFFMpegDecodeStream.GetPosition(): real;
 begin
   // FIXME: the audio-clock might not be that accurate
@@ -378,9 +396,14 @@ begin
     seekFlags := AVSEEK_FLAG_BACKWARD;
   seekFlags := AVSEEK_FLAG_ANY;
 
+LockDecoder();
   seekRequest := true;
+UnlockDecoder();
   SDL_CondSignal(resumeCond);
-
+  (*
+  while ((not quitRequest) and seekRequest) do
+    SDL_CondWait(seekCond, GetParserMutex());
+  *)
   UnlockParser();
 end;
 
@@ -446,7 +469,10 @@ begin
         packetQueue.Flush();
         packetQueue.PutStatus(PKT_STATUS_FLAG_FLUSH, nil);
       end;
+  LockDecoder();
       seekRequest := false;
+  UnlockDecoder();
+      SDL_CondSignal(seekCond);
     end;
 
     UnlockParser();
@@ -517,20 +543,15 @@ begin
     begin
       data_size := bufSize;
 
-      try
-        {$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0
-        len1 := avcodec_decode_audio2(pCodecCtx, @buffer,
-                    data_size, audio_pkt_data, audio_pkt_size);
-        {$ELSE}
-        // FIXME: with avcodec_decode_audio a package could contain several frames
-        //        this is not handled yet
-        len1 := avcodec_decode_audio(pCodecCtx, @buffer,
-                    data_size, audio_pkt_data, audio_pkt_size);
-        {$IFEND}
-      except
-        Log.LogError('Exception at avcodec_decode_audio(2)!', 'TFFMpegDecodeStream.DecodeFrame');
-        len1 := -1;
-      end;
+      {$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0
+      len1 := avcodec_decode_audio2(pCodecCtx, @buffer,
+                  data_size, audio_pkt_data, audio_pkt_size);
+      {$ELSE}
+      // FIXME: with avcodec_decode_audio a package could contain several frames
+      //        this is not handled yet
+      len1 := avcodec_decode_audio(pCodecCtx, @buffer,
+                  data_size, audio_pkt_data, audio_pkt_size);
+      {$IFEND}
 
       if(len1 < 0) then
       begin
@@ -632,6 +653,17 @@ begin
   if EOF then
     exit;
 
+  LockDecoder();
+  try
+    if (seekRequest) then
+    begin
+      Result := 0;
+      Exit;
+    end;
+  finally
+    UnlockDecoder();
+  end;
+
   // copy data to output buffer
   while (nBytesRemain > 0) do begin
     // check if we need more data
@@ -725,20 +757,27 @@ begin
 
   if (not FileExists(Filename)) then
   begin
-    Log.LogStatus('LoadSoundFromFile: Sound not found "' + Filename + '"', 'UAudio_FFMpeg');
+    Log.LogError('Audio-file does not exist: "' + Filename + '"', 'UAudio_FFMpeg');
     exit;
   end;
 
   // open audio file
   if (av_open_input_file(pFormatCtx, PChar(Filename), nil, 0, nil) <> 0) then
+  begin
+    Log.LogError('av_open_input_file failed: "' + Filename + '"', 'UAudio_FFMpeg');
     exit;
+  end;
 
   // TODO: do we need to generate PTS values if they do not exist?
   //pFormatCtx^.flags := pFormatCtx^.flags or AVFMT_FLAG_GENPTS;
-  
+
   // retrieve stream information
   if (av_find_stream_info(pFormatCtx) < 0) then
+  begin
+    Log.LogError('av_find_stream_info failed: "' + Filename + '"', 'UAudio_FFMpeg');
+    av_close_input_file(pFormatCtx);
     exit;
+  end;
 
   // FIXME: hack used by ffplay. Maybe should not use url_feof() to test for the end
   pFormatCtx^.pb.eof_reached := 0;
@@ -749,7 +788,11 @@ begin
 
   ffmpegStreamID := FindAudioStreamIndex(pFormatCtx);
   if (ffmpegStreamID < 0) then
+  begin
+    Log.LogError('FindAudioStreamIndex: No Audio-stream found "' + Filename + '"', 'UAudio_FFMpeg');
+    av_close_input_file(pFormatCtx);
     exit;
+  end;
 
   //Log.LogStatus('AudioStreamIndex is: '+ inttostr(ffmpegStreamID), 'UAudio_FFMpeg');
 
@@ -759,7 +802,8 @@ begin
   pCodec := avcodec_find_decoder(pCodecCtx^.codec_id);
   if (pCodec = nil) then
   begin
-    Log.LogStatus('Unsupported codec!', 'UAudio_FFMpeg');
+    Log.LogError('Unsupported codec!', 'UAudio_FFMpeg');
+    av_close_input_file(pFormatCtx);
     exit;
   end;
 
@@ -777,7 +821,7 @@ begin
   // Note: avcodec_open() is not thread-safe!
   if (avcodec_open(pCodecCtx, pCodec) < 0) then
   begin
-    Log.LogStatus('avcodec_open failed!', 'UAudio_FFMpeg');
+    Log.LogError('avcodec_open failed!', 'UAudio_FFMpeg');
     exit;
   end;
 
diff --git a/Game/Code/Classes/UAudioPlayback_SoftMixer.pas b/Game/Code/Classes/UAudioPlayback_SoftMixer.pas
index 714e19ae..8ffe55ac 100644
--- a/Game/Code/Classes/UAudioPlayback_SoftMixer.pas
+++ b/Game/Code/Classes/UAudioPlayback_SoftMixer.pas
@@ -302,7 +302,7 @@ begin
   Stop();
 
   // reset and/or free data
-  
+
   Loop := false;
 
   // TODO: use DecodeStream.Unref() instead of Free();
@@ -450,8 +450,8 @@ begin
     mixer.RemoveStream(Self);
 
   // rewind (note: DecodeStream might be closed already, but this is not a problem)
-  if assigned(DecodeStream) then
-    DecodeStream.Position := 0;
+//  if assigned(DecodeStream) then
+//    DecodeStream.Position := 0;
 end;
 
 function TGenericPlaybackStream.GetLoop(): boolean;
diff --git a/Game/Code/Classes/UMain.pas b/Game/Code/Classes/UMain.pas
index 9c867a3c..ea3da9ad 100644
--- a/Game/Code/Classes/UMain.pas
+++ b/Game/Code/Classes/UMain.pas
@@ -157,7 +157,13 @@ begin
     //------------------------------
     //StartUp - Create Classes and Load Files
     //------------------------------
+
+    // Initialize SDL
+    // Without SDL_INIT_TIMER SDL_GetTicks() might return strange values
+    SDL_Init(SDL_INIT_VIDEO or SDL_INIT_TIMER);
+
     USTime := TTime.Create;
+    VideoBGTimer := TRelativeTimer.Create;
 
     // Commandline Parameter Parser
     Params := TCMDParams.Create;
@@ -174,19 +180,12 @@ begin
     InitializePaths;
     Log.LogStatus('Load Language', 'Initialization');
     Language := TLanguage.Create;
-    
+
     // Add Const Values:
     Language.AddConst('US_VERSION', USDXVersionStr);
     Log.BenchmarkEnd(1);
     Log.LogBenchmark('Loading Language', 1);
 
-    // SDL
-    Log.BenchmarkStart(1);
-    Log.LogStatus('Initialize SDL', 'Initialization');
-    SDL_Init(SDL_INIT_VIDEO or SDL_INIT_TIMER);
-    Log.BenchmarkEnd(1);
-    Log.LogBenchmark('Initializing SDL', 1);
-
     // SDL_ttf
     Log.BenchmarkStart(1);
     Log.LogStatus('Initialize SDL_ttf', 'Initialization');
@@ -223,6 +222,9 @@ begin
     Log.BenchmarkEnd(1);
     Log.LogBenchmark('Initializing Sound', 1);
 
+    // Lyrics-engine with media reference timer
+    LineState := TLineState.Create();
+
     // Theme
     Log.BenchmarkStart(1);
     Log.LogStatus('Load Themes', 'Initialization');
@@ -370,6 +372,8 @@ end;
 procedure MainLoop;
 var
   Delay:    integer;
+const
+  MAX_FPS = 100;
 begin
   Delay := 0;
   SDL_EnableKeyRepeat(125, 125);
@@ -394,7 +398,7 @@ begin
     // delay
     CountMidTime;
 
-    Delay := Floor(1000 / 100 - 1000 * TimeMid);
+    Delay := Floor(1000 / MAX_FPS - 1000 * TimeMid);
 
     if Delay >= 1 then
       SDL_Delay(Delay); // dynamic, maximum is 100 fps
@@ -655,8 +659,6 @@ var
   Done:     real;
   N:        integer;
 begin
-  LineState.CurrentTime := LineState.CurrentTime + TimeSkip;
-
   LineState.OldBeat := LineState.CurrentBeat;
   LineState.MidBeat := GetMidBeat(LineState.CurrentTime - (CurrentSong.Gap{ + 90 I've forgotten for what it is}) / 1000); // new system with variable BPM in function
   LineState.CurrentBeat := Floor(LineState.MidBeat);
diff --git a/Game/Code/Classes/UMusic.pas b/Game/Code/Classes/UMusic.pas
index 9c029acd..bad0aa86 100644
--- a/Game/Code/Classes/UMusic.pas
+++ b/Game/Code/Classes/UMusic.pas
@@ -9,6 +9,7 @@ interface
 {$I switches.inc}
 
 uses
+  UTime,
   Classes;
 
 type
@@ -35,7 +36,6 @@ type
   end;
   ALine = array of TLine;     // (TODO: rename to TLineArray)
 
-  // (TCzesci = TSentences)  TCzesci changed to TLines because TSentences exist elseware in incompatible form
   TLines = record
     Current:    integer;      // for drawing of current line
     High:       integer;
@@ -46,31 +46,39 @@ type
     Line:       ALine;
   end;
 
-  // (TODO: rename TCzas to something like T(Line/Sentence)Time/TLinePosition/TLineState)
-  // (Czas = time)
-  TLineState = record        // all that concerns the current frames
-    OldBeat:      integer;    // previous discovered beat
-    CurrentBeat:  integer;
-    MidBeat:      real;       // like CurrentBeat
+  TLineState = class        // all that concerns the current frames
+    private
+      Timer:        TRelativeTimer; // keeps track of the current time
+    public
+      OldBeat:      integer;    // previous discovered beat
+      CurrentBeat:  integer;
+      MidBeat:      real;       // like CurrentBeat
+
+      // now we use this for super synchronization!
+      // only used when analyzing voice
+      OldBeatD:     integer;    // previous discovered beat
+      CurrentBeatD: integer;
+      MidBeatD:     real;       // like CurrentBeatD
+      FracBeatD:    real;       // fractional part of MidBeatD
 
-    // now we use this for super synchronization!
-    // only used when analyzing voice
-    OldBeatD:     integer;    // previous discovered beat
-    CurrentBeatD: integer;
-    MidBeatD:     real;       // like CurrentBeatD
-    FracBeatD:    real;       // fractional part of MidBeatD
+      // we use this for audible clicks
+      OldBeatC:     integer;    // previous discovered beat
+      CurrentBeatC: integer;
+      MidBeatC:     real;       // like CurrentBeatC
+      FracBeatC:    real;       // fractional part of MidBeatC
 
-    // we use this for audible clicks
-    OldBeatC:     integer;    // previous discovered beat
-    CurrentBeatC: integer;
-    MidBeatC:     real;       // like CurrentBeatC
-    FracBeatC:    real;       // fractional part of MidBeatC
+      OldLine:      integer;    // previous displayed sentence
 
+      TotalTime:    real;       // total song time
 
-    OldLine:      integer;    // previous displayed sentence
+      constructor Create();
+      procedure Pause();
+      procedure Resume();
+      function GetCurrentTime(): real;
+      procedure SetCurrentTime(Time: real);
 
-    CurrentTime:  real;
-    TotalTime:    real;
+      // current song time used as base-timer for lyrics etc.
+      property CurrentTime: real READ GetCurrentTime WRITE SetCurrentTime;
   end;
 
 
@@ -656,6 +664,31 @@ begin
   end;
 end;
 
+constructor TLineState.Create();
+begin
+  Timer := TRelativeTimer.Create();
+end;
+
+procedure TLineState.Pause();
+begin
+  Timer.Pause();
+end;
+
+procedure TLineState.Resume();
+begin
+  Timer.Resume();
+end;
+
+procedure TLineState.SetCurrentTime(Time: real);
+begin
+  Timer.SetTime(Time);
+end;
+
+function TLineState.GetCurrentTime(): real;
+begin
+  Result := Timer.GetTime();
+end;
+
 
 initialization
 begin