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https://git.vladimir.cc/vladimir/ewsdr.git
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446 lines
16 KiB
ObjectPascal
446 lines
16 KiB
ObjectPascal
unit WaterfallView;
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{
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WaterfallView.pas — рендеринг водопада.
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TWaterfallView — изолированный класс, не зависит от SpectrumView.
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}
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{$IFDEF FPC}
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{$MODE Delphi}
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{$ENDIF}
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interface
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uses
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Classes, SysUtils, Graphics, ExtCtrls, Controls, Math,
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IntfGraphics, FPImage, LCLIntf, LCLType, GraphType, AppTheme;
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type
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TWaterfallView = class
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protected
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FWaterfallBitmap: TBitmap;
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FWfBitmap: TBitmap;
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FWfBitmapW: Integer;
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FWfBitmapH: Integer;
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FWfIntfImg: TLazIntfImage;
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FWfPixels: array of LongWord;
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FWaterfallBuf: array[0..1023] of Single;
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FWaterfallBufCount: Integer;
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FWaterfallDirty: Boolean;
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FWfFrameCounter: Integer;
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FWfFrameInterval: Integer;
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FWfAGCEnabled: Boolean;
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FWfNFEnabled: Boolean;
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FWfManualHigh: Double;
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FWfManualLow: Double;
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FWfAGCOffset: Double;
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FWfHigh: Double;
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FWfLow: Double;
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FCenterFreq: Double;
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FSpanHz: Double;
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FTXMode: Boolean;
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FTXFreq: Double;
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FTXSpanHz: Double;
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FMarkerActive: Boolean;
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FMarkerX: Integer;
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FTheme: TAppTheme;
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FLightTheme: Boolean;
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FPbWaterfall: TControl;
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procedure DrawMarkerLine(C: TCanvas; W, H: Integer);
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public
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constructor Create;
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destructor Destroy; override;
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property CenterFreq: Double read FCenterFreq write FCenterFreq;
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property SpanHz: Double read FSpanHz write FSpanHz;
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property TXMode: Boolean read FTXMode write FTXMode;
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property TXFreq: Double read FTXFreq write FTXFreq;
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property TXSpanHz: Double read FTXSpanHz write FTXSpanHz;
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property WfAGCEnabled: Boolean read FWfAGCEnabled write FWfAGCEnabled;
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property WfNFEnabled: Boolean read FWfNFEnabled write FWfNFEnabled;
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property WfManualHigh: Double read FWfManualHigh write FWfManualHigh;
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property WfManualLow: Double read FWfManualLow write FWfManualLow;
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property WfAGCOffset: Double read FWfAGCOffset write FWfAGCOffset;
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property WaterfallDirty: Boolean read FWaterfallDirty write FWaterfallDirty;
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property WfFrameInterval: Integer read FWfFrameInterval write FWfFrameInterval;
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property MarkerActive: Boolean read FMarkerActive write FMarkerActive;
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property MarkerX: Integer read FMarkerX write FMarkerX;
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property PbWaterfall: TControl write FPbWaterfall;
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procedure SetWaterfallData(const Pixels: array of Single; Count: Integer); virtual;
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procedure DrawWaterfall; virtual;
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procedure PaintWaterfall(Sender: TObject); virtual;
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procedure SetWaterfallBitmapSize(W, H: Integer); virtual;
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procedure ResetWfAvgBuf; virtual;
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procedure ResetWfBuf; virtual;
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procedure SetTheme(const T: TAppTheme); virtual;
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end;
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implementation
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// ════════════════════════════════════════════════════════════════════════════
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// Вспомогательные функции
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// ════════════════════════════════════════════════════════════════════════════
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function FormatFreqWF(Hz: Double): string;
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var Mhz: Int64; KHz, Rest: Integer;
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begin
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Mhz := Trunc(Hz / 1000000);
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KHz := Trunc((Hz - Mhz * 1000000) / 1000);
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Rest := Trunc(Hz) mod 1000;
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Result := Format('%d.%3.3d.%3.3d', [Mhz, KHz, Rest]);
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end;
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function WaterfallEnhancedColorThetis(ValueDB, LowDB, HighDB: Double): LongWord;
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var
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Overall, Local: Double;
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R, G, B: Integer;
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begin
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if ValueDB <= LowDB then begin Result := $FF000000; Exit; end;
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if ValueDB >= HighDB then begin Result := ($FF shl 24) or (255 shl 16) or (124 shl 8) or 192; Exit; end;
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Overall := (ValueDB - LowDB) / Max(1E-9, HighDB - LowDB);
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if Overall < (2.0 / 9.0) then
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begin Local := Overall / (2.0/9.0); R := 0; G := 0; B := Round(Local * 255.0); end
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else if Overall < (3.0 / 9.0) then
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begin Local := (Overall - 2.0/9.0) / (1.0/9.0); R := 0; G := Round(Local*255.0); B := 255; end
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else if Overall < (4.0 / 9.0) then
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begin Local := (Overall - 3.0/9.0) / (1.0/9.0); R := 0; G := 255; B := Round((1.0-Local)*255.0); end
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else if Overall < (5.0 / 9.0) then
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begin Local := (Overall - 4.0/9.0) / (1.0/9.0); R := Round(Local*255.0); G := 255; B := 0; end
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else if Overall < (7.0 / 9.0) then
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begin Local := (Overall - 5.0/9.0) / (2.0/9.0); R := 255; G := Round((1.0-Local)*255.0); B := 0; end
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else if Overall < (8.0 / 9.0) then
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begin Local := (Overall - 7.0/9.0) / (1.0/9.0); R := 255; G := 0; B := Round(Local*255.0); end
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else
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begin
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Local := (Overall - 8.0/9.0) / (1.0/9.0);
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R := Round((0.75 + 0.25 * (1.0 - Local)) * 255.0);
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G := Round(Local * 255.0 * 0.5);
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B := 255;
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end;
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R := EnsureRange(R, 0, 255);
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G := EnsureRange(G, 0, 255);
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B := EnsureRange(B, 0, 255);
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Result := ($FF shl 24) or (R shl 16) or (G shl 8) or B;
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end;
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function WaterfallLightTheme(ValueDB, LowDB, HighDB: Double): LongWord;
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const
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NSTOPS = 8;
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SR: array[0..NSTOPS-1] of Integer = (224, 160, 20, 0, 0, 220, 255, 255);
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SG: array[0..NSTOPS-1] of Integer = (230, 185, 80, 185, 200, 210, 90, 20);
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SB: array[0..NSTOPS-1] of Integer = (232, 210, 200, 210, 80, 0, 0, 20);
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var
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T: Double;
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Seg: Integer;
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R, G, B: Integer;
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begin
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if ValueDB <= LowDB then begin Result := $FFE0E6E8; Exit; end;
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if ValueDB >= HighDB then begin Result := ($FF shl 24) or (SR[NSTOPS-1] shl 16) or (SG[NSTOPS-1] shl 8) or SB[NSTOPS-1]; Exit; end;
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T := (ValueDB - LowDB) / Max(1E-9, HighDB - LowDB) * (NSTOPS - 1);
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Seg := Min(NSTOPS - 2, Trunc(T));
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T := T - Seg;
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R := EnsureRange(Round(SR[Seg] * (1.0 - T) + SR[Seg+1] * T), 0, 255);
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G := EnsureRange(Round(SG[Seg] * (1.0 - T) + SG[Seg+1] * T), 0, 255);
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B := EnsureRange(Round(SB[Seg] * (1.0 - T) + SB[Seg+1] * T), 0, 255);
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Result := ($FF shl 24) or (R shl 16) or (G shl 8) or B;
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end;
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procedure InitRawDesc32WF(var Desc: TRawImageDescription; AWidth, AHeight: Integer);
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begin
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FillChar(Desc, SizeOf(Desc), 0);
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Desc.Format := ricfRGBA;
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Desc.Width := AWidth;
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Desc.Height := AHeight;
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Desc.Depth := 32;
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Desc.BitOrder := riboBitsInOrder;
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Desc.ByteOrder := riboLSBFirst;
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Desc.LineOrder := riloTopToBottom;
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Desc.BitsPerPixel := 32;
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Desc.LineEnd := rileDWordBoundary;
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Desc.BlueShift := 0; Desc.BluePrec := 8;
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Desc.GreenShift := 8; Desc.GreenPrec := 8;
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Desc.RedShift := 16; Desc.RedPrec := 8;
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Desc.AlphaShift := 24; Desc.AlphaPrec := 8;
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end;
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// ════════════════════════════════════════════════════════════════════════════
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// TWaterfallView
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// ════════════════════════════════════════════════════════════════════════════
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constructor TWaterfallView.Create;
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begin
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inherited Create;
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FWaterfallBitmap := TBitmap.Create;
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FWfBitmap := TBitmap.Create;
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FWfIntfImg := nil;
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FWfBitmapW := 0;
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FWfBitmapH := 0;
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FWfManualHigh := -80.0;
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FWfManualLow := -130.0;
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FWfAGCOffset := 0.0;
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FWfHigh := -80.0;
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FWfLow := -130.0;
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FWfAGCEnabled := True;
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FWfNFEnabled := False;
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FWaterfallBufCount := 1024;
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FWfFrameInterval := 2;
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FWfFrameCounter := 0;
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FWaterfallDirty := True;
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FTheme := DarkTheme;
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FLightTheme := False;
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FSpanHz := 192000;
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ResetWfBuf;
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end;
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destructor TWaterfallView.Destroy;
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begin
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FWaterfallBitmap.Free;
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FWfBitmap.Free;
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FreeAndNil(FWfIntfImg);
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inherited;
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end;
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procedure TWaterfallView.SetTheme(const T: TAppTheme);
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begin
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FTheme := T;
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FLightTheme := T.BG > TColor($00808080);
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FWaterfallDirty := True;
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// Сброс размера — чтобы следующий кадр перезаполнил фон новой темой
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FWfBitmapW := 0;
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FWfBitmapH := 0;
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SetLength(FWfPixels, 0);
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FreeAndNil(FWfIntfImg);
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end;
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procedure TWaterfallView.ResetWfAvgBuf;
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begin
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FWfHigh := FWfManualHigh;
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FWfLow := FWfManualLow;
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FWaterfallDirty := True;
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end;
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procedure TWaterfallView.ResetWfBuf;
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var i: Integer;
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begin
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for i := 0 to 1023 do FWaterfallBuf[i] := -130.0;
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FWfHigh := FWfManualHigh;
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FWfLow := FWfManualLow;
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FWaterfallDirty := True;
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end;
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procedure TWaterfallView.SetWaterfallData(const Pixels: array of Single; Count: Integer);
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var i, N: Integer;
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begin
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N := Min(Count, 1024);
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for i := 0 to N - 1 do FWaterfallBuf[i] := Pixels[i];
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FWaterfallBufCount := N;
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Inc(FWfFrameCounter);
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if FWfFrameCounter >= Max(1, FWfFrameInterval) then
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begin
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FWfFrameCounter := 0;
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FWaterfallDirty := True;
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end;
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end;
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procedure TWaterfallView.SetWaterfallBitmapSize(W, H: Integer);
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begin
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FWaterfallBitmap.SetSize(W, H);
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FWfBitmapW := 0;
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FWfBitmapH := 0;
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SetLength(FWfPixels, 0);
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FreeAndNil(FWfIntfImg);
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end;
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procedure TWaterfallView.DrawMarkerLine(C: TCanvas; W, H: Integer);
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var MX: Integer; MarkerFreq: Double; MarkerLbl: string;
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begin
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MX := Round(FMarkerX / 1000.0 * W);
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if (MX < 0) or (MX >= W) then Exit;
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MarkerFreq := (FCenterFreq - FSpanHz / 2) + FMarkerX / 1000.0 * FSpanHz;
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MarkerLbl := FormatFreqWF(Round(MarkerFreq));
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C.Pen.Color := TColor($004444FF);
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C.Pen.Width := 1; C.Pen.Style := psSolid;
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C.MoveTo(MX, 0); C.LineTo(MX, H);
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C.Font.Color := TColor($004444FF);
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C.Font.Size := 7; C.Font.Name := 'Courier New';
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if MX + 4 + C.TextWidth(MarkerLbl) < W then
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C.TextOut(MX + 4, 4, MarkerLbl)
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else
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C.TextOut(MX - 4 - C.TextWidth(MarkerLbl), 4, MarkerLbl);
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end;
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// ────────────────────────────────────────────────────────────────────────────
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// DrawWaterfall
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// ────────────────────────────────────────────────────────────────────────────
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procedure TWaterfallView.DrawWaterfall;
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var
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W, H, X: Integer;
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dB, frac, WatSrcF: Double;
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WatS0, WatS1: Integer;
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TargetLow, TargetHigh: Double;
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HistMinDB, HistMaxDB, HistStepDB: Double;
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NoiseFloorDB, SignalTopDB: Double;
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CumCount, LowTargetCount, HighTargetCount, HistIdx: Integer;
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WfHigh, WfLow, InvRange, Step: Double;
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Px: PLongWord;
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Desc: TRawImageDescription;
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Row, Col: Integer; RowPtr: PByte; Src: PLongWord; BPPi: Integer;
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Pal: LongWord; Hist: array[0..191] of Integer; SrcCount: Integer;
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const
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ALPHA_HIGH = 0.10; ALPHA_LOW = 0.08;
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WF_AUTO_OFFSET = -4.0; WF_MIN_RANGE = 48.0; WF_MAX_RANGE = 62.0;
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begin
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if FWaterfallBitmap = nil then Exit;
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W := FWaterfallBitmap.Width; H := FWaterfallBitmap.Height;
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if (W <= 0) or (H <= 0) then Exit;
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SrcCount := EnsureRange(FWaterfallBufCount, 2, 1024);
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FillChar(Hist, SizeOf(Hist), 0);
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HistMinDB := -170.0; HistMaxDB := 22.0;
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HistStepDB := (HistMaxDB - HistMinDB) / Length(Hist);
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for X := 0 to SrcCount - 1 do
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begin
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HistIdx := EnsureRange(Trunc((FWaterfallBuf[X] - HistMinDB) / HistStepDB), 0, High(Hist));
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Inc(Hist[HistIdx]);
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end;
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LowTargetCount := Round(SrcCount * 0.30);
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HighTargetCount := Round(SrcCount * 0.98);
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CumCount := 0; NoiseFloorDB := FWfLow; SignalTopDB := FWfHigh;
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for HistIdx := 0 to High(Hist) do
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begin
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CumCount := CumCount + Hist[HistIdx];
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if CumCount >= LowTargetCount then
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begin NoiseFloorDB := HistMinDB + (HistIdx + 0.5) * HistStepDB; Break; end;
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end;
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CumCount := 0;
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for HistIdx := 0 to High(Hist) do
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begin
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CumCount := CumCount + Hist[HistIdx];
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if CumCount >= HighTargetCount then
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begin SignalTopDB := HistMinDB + (HistIdx + 0.5) * HistStepDB; Break; end;
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end;
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if FWfAGCEnabled then
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begin
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TargetLow := NoiseFloorDB + WF_AUTO_OFFSET + FWfAGCOffset;
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if FWfNFEnabled then
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TargetHigh := Max(TargetLow + WF_MIN_RANGE, SignalTopDB + 6.0)
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else
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TargetHigh := TargetLow + 52.0;
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if TargetHigh > TargetLow + WF_MAX_RANGE then TargetHigh := TargetLow + WF_MAX_RANGE;
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FWfLow := FWfLow + ALPHA_LOW * (TargetLow - FWfLow);
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FWfHigh := FWfHigh + ALPHA_HIGH * (TargetHigh - FWfHigh);
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end;
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WfHigh := FWfHigh; WfLow := FWfLow;
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if not FWfAGCEnabled then begin WfHigh := FWfManualHigh; WfLow := FWfManualLow; end;
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if WfHigh < WfLow + 40.0 then WfHigh := WfLow + 40.0;
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if WfHigh > 0.0 then WfHigh := 0.0;
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if WfLow < -160 then WfLow := -160;
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InvRange := 255.0 / (WfHigh - WfLow);
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if (FWfBitmapW <> W) or (FWfBitmapH <> H) then
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begin
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FWfBitmapW := W; FWfBitmapH := H;
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SetLength(FWfPixels, W * H);
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Pal := $FF000000
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or ((LongWord(FTheme.Panel) and $FF) shl 16)
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or (LongWord(FTheme.Panel) and $FF00)
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or ((LongWord(FTheme.Panel) shr 16) and $FF);
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FillDWord(FWfPixels[0], W * H, Pal);
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FWfBitmap.SetSize(W, H);
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FreeAndNil(FWfIntfImg);
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end;
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if H > 1 then Move(FWfPixels[0], FWfPixels[W], (H - 1) * SizeOf(LongWord) * W);
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Step := (SrcCount - 1.0) / Max(1, W - 1);
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WatSrcF := 0.0; Px := @FWfPixels[0];
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for X := 0 to W - 1 do
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begin
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if FTXMode and (FTXSpanHz > 0) and (FSpanHz > 0) then
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begin
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dB := FCenterFreq - FSpanHz * 0.5 + X * FSpanHz / Max(1, W - 1) - FTXFreq;
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if (dB < -FTXSpanHz * 0.5) or (dB > FTXSpanHz * 0.5) then
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begin
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if H > 1 then Px^ := FWfPixels[X + W]
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else Px^ := 0;
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Inc(Px);
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WatSrcF := WatSrcF + Step;
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Continue;
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end;
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frac := (dB + FTXSpanHz * 0.5) / FTXSpanHz * (SrcCount - 1);
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WatS0 := Trunc(frac);
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if WatS0 > SrcCount - 2 then WatS0 := SrcCount - 2;
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WatS1 := WatS0 + 1;
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frac := frac - WatS0;
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dB := FWaterfallBuf[WatS0] * (1.0 - frac) + FWaterfallBuf[WatS1] * frac;
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end else
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begin
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WatS0 := Trunc(WatSrcF);
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if WatS0 > SrcCount - 2 then WatS0 := SrcCount - 2;
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WatS1 := WatS0 + 1;
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frac := WatSrcF - WatS0;
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dB := FWaterfallBuf[WatS0] * (1.0 - frac) + FWaterfallBuf[WatS1] * frac;
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end;
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if FLightTheme then
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Pal := WaterfallLightTheme(dB, WfLow, WfHigh)
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else
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Pal := WaterfallEnhancedColorThetis(dB, WfLow, WfHigh);
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Px^ := Pal; Inc(Px);
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WatSrcF := WatSrcF + Step;
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end;
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if FWfIntfImg = nil then
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begin
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FWfIntfImg := TLazIntfImage.Create(W, H);
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InitRawDesc32WF(Desc, W, H);
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FWfIntfImg.DataDescription := Desc;
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FWfIntfImg.CreateData;
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end;
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BPPi := FWfIntfImg.DataDescription.BitsPerPixel div 8;
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if (BPPi = 4) and (FWfIntfImg.PixelData <> nil) then
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Move(FWfPixels[0], FWfIntfImg.PixelData^, W * H * 4)
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else
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begin
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Src := @FWfPixels[0];
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for Row := 0 to H - 1 do
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begin
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RowPtr := FWfIntfImg.GetDataLineStart(Row);
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if RowPtr = nil then begin Inc(Src, W); Continue; end;
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for Col := 0 to W - 1 do
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begin
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RowPtr[0] := Byte(Src^); RowPtr[1] := Byte(Src^ shr 8);
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RowPtr[2] := Byte(Src^ shr 16);
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if BPPi >= 4 then RowPtr[3] := $FF;
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Inc(Src); Inc(RowPtr, BPPi);
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end;
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end;
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end;
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FWfBitmap.LoadFromIntfImage(FWfIntfImg);
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end;
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// ────────────────────────────────────────────────────────────────────────────
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// PaintWaterfall
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// ────────────────────────────────────────────────────────────────────────────
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procedure TWaterfallView.PaintWaterfall(Sender: TObject);
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var PB: TPaintBox; W, H: Integer;
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begin
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PB := TPaintBox(Sender);
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W := PB.Width; H := PB.Height;
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if (W <= 0) or (H <= 0) then Exit;
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if (FWfBitmap <> nil) and (FWfBitmap.Width = W) and (FWfBitmap.Height = H) then
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PB.Canvas.Draw(0, 0, FWfBitmap)
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else begin
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PB.Canvas.Brush.Color := FTheme.Panel;
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PB.Canvas.FillRect(Rect(0, 0, W, H));
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end;
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if FMarkerActive then DrawMarkerLine(PB.Canvas, W, H);
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end;
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end.
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