From 688182ae4f56aabaf12233f32763274286c5d634 Mon Sep 17 00:00:00 2001 From: whiteshark0 Date: Sun, 21 Sep 2008 11:34:25 +0000 Subject: missing files commited Equalizer now loads reflection settings from theme old equalizer methods removed git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1388 b956fd51-792f-4845-bead-9b4dfca2ff2c --- src/menu/UMenuEqualizer.pas | 285 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 285 insertions(+) create mode 100644 src/menu/UMenuEqualizer.pas (limited to 'src/menu') diff --git a/src/menu/UMenuEqualizer.pas b/src/menu/UMenuEqualizer.pas new file mode 100644 index 00000000..8cff606d --- /dev/null +++ b/src/menu/UMenuEqualizer.pas @@ -0,0 +1,285 @@ +unit UMenuEqualizer; + +interface + +{$IFDEF FPC} + {$MODE Delphi} +{$ENDIF} + +{$I switches.inc} + +uses UMusic, UThemes; + +type + //---------------- + //Tms_Equalizer + //Class displaying an equalizer (Songscreen) + //---------------- + Tms_Equalizer = class(TObject) + private + FFTData: TFFTData; // moved here to avoid stack overflows + BandData: array of Byte; + RefreshTime: Cardinal; + + Source: IAudioPlayback; + + Procedure Analyse; + public + X: Integer; + Y: Integer; + Z: Real; + + W: Integer; + H: Integer; + Space: Integer; + + Visible: Boolean; + Alpha: real; + Color: TRGB; + + Direction: Boolean; + + BandLength: Integer; + + Reflection: boolean; + Reflectionspacing: Real; + + + constructor Create(Source: IAudioPlayback; mySkin: TThemeEqualizer); + + procedure Draw; + + Procedure SetBands(Value: Byte); + Function GetBands: Byte; + Property Bands: Byte read GetBands write SetBands; + procedure SetSource(newSource: IAudioPlayback); + end; + +implementation +uses math, SDL, gl, glext; + + +constructor Tms_Equalizer.Create(Source: IAudioPlayback; mySkin: TThemeEqualizer); +var I: Integer; +begin + If (Source <> nil) then + begin + X := mySkin.X; + Y := mySkin.Y; + W := mySkin.W; + H := mySkin.H; + Z := mySkin.Z; + + Space := mySkin.Space; + + Visible := mySkin.Visible; + Alpha := mySkin.Alpha; + Color.R := mySkin.ColR; + Color.G := mySkin.ColG; + Color.B := mySkin.ColB; + + Direction := mySkin.Direction; + Bands := mySkin.Bands; + BandLength := mySkin.Length; + + Reflection := mySkin.Reflection; + Reflectionspacing := mySkin.Reflectionspacing; + + Self.Source := Source; + + + //Check if Visible + If (Bands <= 0) OR + (BandLength <= 0) OR + (W <= 0) OR + (H <= 0) OR + (Alpha <= 0) then + Visible := False; + + //ClearArray + For I := low(BandData) to high(BandData) do + BandData[I] := 3; + end + else + Visible := False; +end; + +//-------- +// evaluate FFT-Data +//-------- +Procedure Tms_Equalizer.Analyse; + var + I: Integer; + ChansPerBand: byte; // channels per band + MaxChannel: Integer; + Pos: Real; + CurBand: Integer; +begin + Source.GetFFTData(FFTData); + + Pos := 0; + // use only the first approx. 92 of 256 FFT-channels (approx. up to 8kHz + ChansPerBand := ceil(92 / Bands); // How much channels are used for one Band + MaxChannel := ChansPerBand * Bands - 1; + + // Change Lengths + for i := 0 to MaxChannel do + begin + // Gain higher freq. data so that the bars are visible + if i > 35 then + FFTData[i] := FFTData[i] * 8 + else if i > 11 then + FFTData[i] := FFTData[i] * 4.5 + else + FFTData[i] := FFTData[i] * 1.1; + + // clamp data + if (FFTData[i] > 1) then + FFTData[i] := 1; + + // Get max. pos + if (FFTData[i] * BandLength > Pos) then + Pos := FFTData[i] * BandLength; + + // Check if this is the last channel in the band + if ((i+1) mod ChansPerBand = 0) then + begin + CurBand := i div ChansPerBand; + + // Smooth delay if new equalizer is lower than the old one + if ((BandData[CurBand] > Pos) and (BandData[CurBand] > 1)) then + BandData[CurBand] := BandData[CurBand] - 1 + else + BandData[CurBand] := Round(Pos); + + Pos := 0; + end; + end; +end; + +//-------- +// Draw SpectrumAnalyser, Call Analyse +//-------- +procedure Tms_Equalizer.Draw; + var + CurTime: Cardinal; + PosX, PosY: Real; + I, J: Integer; + Diff: Real; + + Function GetAlpha(H: Single): Single; + begin + Result := (Alpha * 0.3) *(1 - H/(Bands * (W + Space))); + end; +begin + If (Visible) AND not (AudioPlayback.Finished) then + begin + //Call Analyse if necessary + CurTime := SDL_GetTicks(); + If (CurTime > RefreshTime) then + begin + Analyse; + + RefreshTime := CurTime + 44; + end; + + //Draw Equalizer Bands + // Setup OpenGL + glColorRGB(Color, Alpha); + glDisable(GL_TEXTURE_2D); + glEnable(GL_BLEND); + + // Set position of the first equalizer bar + PosY := Y; + PosX := X; + + // Draw bars for each band + for I := 0 to High(BandData) do + begin + // Reset to lower or left position depending on the drawing-direction + if Direction then // Vertical bars + // FIXME: Is Y the upper or lower coordinate? + PosY := Y //+ (H + Space) * BandLength + else // Horizontal bars + PosX := X; + + // Draw the bar as a stack of blocks + for J := 1 to BandData[I] do + begin + // Draw block + glBegin(GL_QUADS); + glVertex3f(PosX, PosY, Z); + glVertex3f(PosX, PosY+H, Z); + glVertex3f(PosX+W, PosY+H, Z); + glVertex3f(PosX+W, PosY, Z); + glEnd; + + If (Reflection) AND (J < BandLength div 2) then + begin + Diff := (Y-PosY) + H; + + //Draw Reflection + If Direction then + begin + glBegin(GL_QUADS); + glColorRGB(Color, GetAlpha(Diff)); + glVertex3f(PosX, Diff + Y + ReflectionSpacing, Z); + glVertex3f(PosX, Diff + Y+H + ReflectionSpacing, Z); + glVertex3f(PosX+W, Diff + Y+H + ReflectionSpacing, Z); + glVertex3f(PosX+W, Diff + Y + ReflectionSpacing, Z); + glColorRGB(Color, GetAlpha(Diff + H)); + glEnd; + end + else + begin + glBegin(GL_QUADS); + glColorRGB(Color, GetAlpha(Diff)); + glVertex3f(PosX, Diff + Y + (H + Space)*Bands + ReflectionSpacing, Z); + glVertex3f(PosX, Diff + Y+H + (H + Space)*Bands + ReflectionSpacing, Z); + glVertex3f(PosX+W, Diff + Y+H + (H + Space)*Bands + ReflectionSpacing, Z); + glVertex3f(PosX+W, Diff + Y + (H + Space)*Bands + ReflectionSpacing, Z); + glColorRGB(Color, GetAlpha(Diff + H)); + glEnd; + end; + + glColorRGB(Color, Alpha); + end; + + + // Calc position of the bar's next block + if Direction then // Vertical bars + PosY := PosY - H - Space + else // Horizontal bars + PosX := PosX + W + Space; + end; + + // Calc position of the next bar + if Direction then // Vertical bars + PosX := PosX + W + Space + else // Horizontal bars + PosY := PosY + H + Space; + end; + + + end; +end; + +Procedure Tms_Equalizer.SetBands(Value: Byte); +begin + SetLength(BandData, Value); +end; + +Function Tms_Equalizer.GetBands: Byte; +begin + Result := Length(BandData); +end; + +Procedure Tms_Equalizer.SetSource(newSource: IAudioPlayback); +begin + If (newSource <> nil) then + Source := newSource; +end; + + + +end. \ No newline at end of file -- cgit v1.2.3