diff options
Diffstat (limited to 'Game/Code/Classes/UVisualizer.pas')
| -rw-r--r-- | Game/Code/Classes/UVisualizer.pas | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/Game/Code/Classes/UVisualizer.pas b/Game/Code/Classes/UVisualizer.pas new file mode 100644 index 00000000..2f584299 --- /dev/null +++ b/Game/Code/Classes/UVisualizer.pas @@ -0,0 +1,394 @@ +{############################################################################
+# Visualizer support for UltraStar deluxe #
+# #
+# Created by hennymcc #
+# Slight modifications by Jay Binks #
+# based on UVideo.pas #
+#############################################################################}
+
+unit UVisualizer;
+
+interface
+
+{$IFDEF FPC}
+ {$MODE DELPHI}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+ SDL,
+ UGraphicClasses,
+ textgl,
+ math,
+ OpenGL12,
+ SysUtils,
+ UIni,
+ {$ifdef DebugDisplay}
+ {$ifdef win32}
+ dialogs,
+ {$endif}
+ {$endif}
+ projectM,
+ UMusic;
+
+implementation
+
+uses
+ UGraphic,
+ UMain,
+ ULog;
+
+var
+ singleton_VideoProjectM : IVideoPlayback;
+
+const
+ gx = 32;
+ gy = 24;
+ fps = 30;
+ texsize = 512;
+
+var
+ ProjectMPath : string;
+ presetsDir : string;
+ fontsDir : string;
+
+ // FIXME: dirty fix needed because the init method is not
+ // called yet.
+ inited: boolean;
+
+type
+ TVideoPlayback_ProjectM = class( TInterfacedObject, IVideoPlayback, IVideoVisualization )
+ private
+ pm : TProjectM;
+
+ VisualizerStarted ,
+ VisualizerPaused : Boolean;
+
+ VisualTex : glUint;
+ PCMData : TPCMData;
+
+ RndPCMcount : integer;
+
+ projMatrix: array[0..3, 0..3] of GLdouble;
+ texMatrix: array[0..3, 0..3] of GLdouble;
+
+ procedure VisualizerStart;
+ procedure VisualizerStop;
+
+ procedure VisualizerTogglePause;
+
+ function GetRandomPCMData(var data: TPCMData): Cardinal;
+
+ procedure SaveOpenGLState();
+ procedure RestoreOpenGLState();
+
+ public
+ constructor Create();
+ procedure Init();
+ function GetName: String;
+
+ function Open( aFileName : string): boolean; // true if succeed
+ procedure Close;
+
+ procedure Play;
+ procedure Pause;
+ procedure Stop;
+
+ procedure SetPosition(Time: real);
+ function GetPosition: real;
+
+ procedure GetFrame(Time: Extended);
+ procedure DrawGL(Screen: integer);
+ end;
+
+
+constructor TVideoPlayback_ProjectM.Create();
+begin
+ RndPCMcount := 0;
+end;
+
+
+procedure TVideoPlayback_ProjectM.Init();
+begin
+ // FIXME: dirty fix needed because the init method is not
+ // called yet.
+ inited := true;
+
+ ProjectMPath := VisualsPath + 'projectM' + PathDelim;
+ presetsDir := ProjectMPath + 'presets';
+ fontsDir := ProjectMPath + 'fonts';
+
+ VisualizerStarted := False;
+ VisualizerPaused := False;
+
+ {$IFDEF UseTexture}
+ glGenTextures(1, PglUint(@VisualTex));
+ glBindTexture(GL_TEXTURE_2D, VisualTex);
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ {$ENDIF}
+end;
+
+function TVideoPlayback_ProjectM.GetName: String;
+begin
+ result := 'ProjectM';
+end;
+
+
+function TVideoPlayback_ProjectM.Open( aFileName : string): boolean; // true if succeed
+begin
+ VisualizerStart();
+ result := true;
+end;
+
+procedure TVideoPlayback_ProjectM.Close;
+begin
+end;
+
+procedure TVideoPlayback_ProjectM.Play;
+begin
+ VisualizerStart();
+end;
+
+procedure TVideoPlayback_ProjectM.Pause;
+begin
+ VisualizerTogglePause();
+end;
+
+procedure TVideoPlayback_ProjectM.Stop;
+begin
+ VisualizerStop();
+end;
+
+procedure TVideoPlayback_ProjectM.SetPosition(Time: real);
+begin
+ pm.RandomPreset();
+end;
+
+function TVideoPlayback_ProjectM.GetPosition: real;
+begin
+ result := 0;
+end;
+
+procedure TVideoPlayback_ProjectM.SaveOpenGLState();
+begin
+ // save all OpenGL state-machine attributes
+ glPushAttrib(GL_ALL_ATTRIB_BITS);
+
+ // save projection-matrix
+ glMatrixMode(GL_PROJECTION);
+ // - WARNING: projection-matrix stack-depth is only 2!
+ // -> overflow might occur if glPopMatrix() is used for this matrix
+ // -> use glGet() instead of glPushMatrix()
+ glPushMatrix();
+ //glGetDoublev(GL_PROJECTION_MATRIX, @projMatrix);
+
+ // save texture-matrix
+ glMatrixMode(GL_TEXTURE);
+ // - WARNING: texture-matrix stack-depth is only 2!
+ // -> overflow might occur if glPopMatrix() is used for this matrix
+ // -> use glGet() instead of glPushMatrix() if problems appear
+ glPushMatrix();
+ //glGetDoublev(GL_TEXTURE_MATRIX, @texMatrix);
+
+ // save modelview-matrix
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+end;
+
+procedure TVideoPlayback_ProjectM.RestoreOpenGLState();
+begin
+ // restore projection-matrix
+ glMatrixMode(GL_PROJECTION);
+ // - WARNING: projection-matrix stack-depth is only 2!
+ // -> overflow _occurs_ if glPopMatrix() is used for this matrix
+ // -> use glLoadMatrix() instead of glPopMatrix()
+ glPopMatrix();
+ //glLoadMatrixd(@projMatrix);
+
+ // restore texture-matrix
+ // -> overflow might occur if glPopMatrix() is used for this matrix
+ glMatrixMode(GL_TEXTURE);
+ glPopMatrix();
+ //glLoadMatrixd(@texMatrix);
+
+ // restore modelview-matrix
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+
+ // restore all OpenGL state-machine attributes
+ glPopAttrib();
+end;
+
+procedure TVideoPlayback_ProjectM.VisualizerStart;
+var
+ initResult: Cardinal;
+begin
+ // FIXME: dirty fix needed because the init method is not
+ // called yet.
+ if (not inited) then
+ Init();
+
+ VisualizerStarted := True;
+
+ pm := TProjectM.Create(gx, gy, fps, texsize, ScreenW, ScreenH,
+ presetsDir, fontsDir);
+ //initResult := projectM_initRenderToTexture(pm);
+
+ SaveOpenGLState();
+ pm.ResetGL(ScreenW, ScreenH);
+ RestoreOpenGLState();
+end;
+
+procedure TVideoPlayback_ProjectM.VisualizerStop;
+begin
+ if VisualizerStarted then begin
+ VisualizerStarted := False;
+ pm.Free();
+ end;
+end;
+
+procedure TVideoPlayback_ProjectM.VisualizerTogglePause;
+begin
+ VisualizerPaused := not VisualizerPaused;
+end;
+
+procedure TVideoPlayback_ProjectM.GetFrame(Time: Extended);
+var
+ nSamples: cardinal;
+ stackDepth: Integer;
+begin
+ if not VisualizerStarted then Exit;
+ if VisualizerPaused then Exit;
+
+ // get audio data
+ nSamples := AudioPlayback.GetPCMData(PcmData);
+
+ if nSamples = 0 then
+ nSamples := GetRandomPCMData(PcmData);
+
+ pm.AddPCM16Data(PSmallint(@PcmData), nSamples);
+
+ // store OpenGL state (might be messed up otherwise)
+ SaveOpenGLState();
+ pm.ResetGL(ScreenW, ScreenH);
+
+ //glGetIntegerv(GL_PROJECTION_STACK_DEPTH, @stackDepth);
+ //writeln('StackDepth0: ' + inttostr(stackDepth));
+
+ // let projectM render a frame
+ try
+ pm.RenderFrame();
+ except
+ // this may happen with some presets ( on linux ) if there is a div by zero
+ // in projectM's getBeatVals() function (file: beat_detect.cc)
+ Log.LogStatus('Div by zero!', 'Visualizer');
+ SetPosition( now );
+ end;
+
+ //glGetIntegerv(GL_PROJECTION_STACK_DEPTH, @stackDepth);
+ //writeln('StackDepth1: ' + inttostr(stackDepth));
+
+ {$IFDEF UseTexture}
+ glBindTexture(GL_TEXTURE_2D, VisualTex);
+ glFlush();
+ glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 0, 0, VisualWidth, VisualHeight, 0);
+ {$ENDIF}
+
+ // restore USDX OpenGL state
+ RestoreOpenGLState();
+
+ // discard projectM's depth buffer information (avoid overlay)
+ glClear(GL_DEPTH_BUFFER_BIT);
+end;
+
+procedure TVideoPlayback_ProjectM.DrawGL(Screen: integer);
+begin
+ {$IFDEF UseTexture}
+ // have a nice black background to draw on (even if there were errors opening the vid)
+ if Screen=1 then begin
+ glClearColor(0, 0, 0, 0);
+ glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
+ end;
+ // exit if there's nothing to draw
+ if not VisualizerStarted then Exit;
+
+ // setup display
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ gluOrtho2D(0, 1, 0, 1);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+
+ glEnable(GL_BLEND);
+ glEnable(GL_TEXTURE_2D);
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glBindTexture(GL_TEXTURE_2D, VisualTex);
+ glColor4f(1, 1, 1, 1);
+
+ // draw projectM frame
+ glBegin(GL_QUADS);
+ glTexCoord2f(0, 0); glVertex2f(0, 0);
+ glTexCoord2f(1, 0); glVertex2f(1, 0);
+ glTexCoord2f(1, 1); glVertex2f(1, 1);
+ glTexCoord2f(0, 1); glVertex2f(0, 1);
+ glEnd();
+
+ glDisable(GL_TEXTURE_2D);
+ glDisable(GL_BLEND);
+
+ // restore state
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+ {$ENDIF}
+end;
+
+function TVideoPlayback_ProjectM.GetRandomPCMData(var data: TPCMData): Cardinal;
+var
+ i: integer;
+begin
+ // Produce some fake PCM data
+ if ( RndPCMcount mod 500 = 0 ) then
+ begin
+ for i := 0 to 511 do begin
+ data[0][i] := 0;
+ data[1][i] := 0;
+ end;
+ end
+ else begin
+ for i := 0 to 511 do begin
+ if ( i mod 2 = 0 ) then begin
+ data[0][i] := floor(Random * power(2.,14));
+ data[1][i] := floor(Random * power(2.,14));
+ end
+ else begin;
+ data[0][i] := floor(Random * power(2.,14));
+ data[1][i] := floor(Random * power(2.,14));
+ end;
+ if ( i mod 2 = 1 ) then begin
+ data[0][i] := -data[0][i];
+ data[1][i] := -data[1][i];
+ end;
+ end;
+ end;
+ Inc( RndPCMcount );
+ result := 512;
+end;
+
+
+initialization
+ singleton_VideoProjectM := TVideoPlayback_ProjectM.create();
+ AudioManager.add( singleton_VideoProjectM );
+
+finalization
+ AudioManager.Remove( singleton_VideoProjectM );
+
+
+
+end.
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