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-rwxr-xr-xGame/Code/lib/FreeImage/FreeBitmap.pas1740
1 files changed, 1740 insertions, 0 deletions
diff --git a/Game/Code/lib/FreeImage/FreeBitmap.pas b/Game/Code/lib/FreeImage/FreeBitmap.pas
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+++ b/Game/Code/lib/FreeImage/FreeBitmap.pas
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+unit FreeBitmap;
+
+{$I switches.inc}
+
+
+// ==========================================================
+//
+// Delphi wrapper for FreeImage 3
+//
+// Design and implementation by
+// - Anatoliy Pulyaevskiy (xvel84@rambler.ru)
+//
+// Contributors:
+// - Enzo Costantini (enzocostantini@libero.it)
+//
+// This file is part of FreeImage 3
+//
+// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
+// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
+// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
+// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
+// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
+// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
+// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
+// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+// THIS DISCLAIMER.
+//
+// Use at your own risk!
+//
+// ==========================================================
+//
+// From begining all code of this file is based on C++ wrapper to
+// FreeImage - FreeImagePlus.
+//
+// ==========================================================
+
+interface
+
+uses
+ SysUtils, Classes, Windows, FreeImage;
+
+type
+ { TFreeObject }
+
+ TFreeObject = class(TObject)
+ public
+ function IsValid: Boolean; virtual;
+ end;
+
+ { TFreeTag }
+
+ TFreeTag = class(TFreeObject)
+ private
+ // fields
+ FTag: PFITAG;
+
+ // getters & setters
+ function GetCount: Cardinal;
+ function GetDescription: string;
+ function GetID: Word;
+ function GetKey: string;
+ function GetLength: Cardinal;
+ function GetTagType: FREE_IMAGE_MDTYPE;
+ function GetValue: Pointer;
+ procedure SetCount(const Value: Cardinal);
+ procedure SetDescription(const Value: string);
+ procedure SetID(const Value: Word);
+ procedure SetKey(const Value: string);
+ procedure SetLength(const Value: Cardinal);
+ procedure SetTagType(const Value: FREE_IMAGE_MDTYPE);
+ procedure SetValue(const Value: Pointer);
+ public
+ // construction & destruction
+ constructor Create(ATag: PFITAG = nil); virtual;
+ destructor Destroy; override;
+
+ // methods
+ function Clone: TFreeTag;
+ function IsValid: Boolean; override;
+ function ToString(Model: FREE_IMAGE_MDMODEL; Make: PChar = nil): string;
+
+ // properties
+ property Key: string read GetKey write SetKey;
+ property Description: string read GetDescription write SetDescription;
+ property ID: Word read GetID write SetID;
+ property TagType: FREE_IMAGE_MDTYPE read GetTagType write SetTagType;
+ property Count: Cardinal read GetCount write SetCount;
+ property Length: Cardinal read GetLength write SetLength;
+ property Value: Pointer read GetValue write SetValue;
+ property Tag: PFITAG read FTag;
+ end;
+
+ { forward declarations }
+
+ TFreeBitmap = class;
+ TFreeMemoryIO = class;
+
+ { TFreeBitmap }
+
+ TFreeBitmapChangingEvent = procedure(Sender: TFreeBitmap; var OldDib, NewDib: PFIBITMAP; var Handled: Boolean) of object;
+
+ TFreeBitmap = class(TFreeObject)
+ private
+ // fields
+ FDib: PFIBITMAP;
+ FOnChange: TNotifyEvent;
+ FOnChanging: TFreeBitmapChangingEvent;
+
+ procedure SetDib(Value: PFIBITMAP);
+ protected
+ function DoChanging(var OldDib, NewDib: PFIBITMAP): Boolean; dynamic;
+ function Replace(NewDib: PFIBITMAP): Boolean; dynamic;
+ public
+ constructor Create(ImageType: FREE_IMAGE_TYPE = FIT_BITMAP; Width: Integer = 0; Height: Integer = 0; Bpp: Integer = 0);
+ destructor Destroy; override;
+ function SetSize(ImageType: FREE_IMAGE_TYPE; Width, Height, Bpp: Integer; RedMask: Cardinal = 0; GreenMask: Cardinal = 0; BlueMask: Cardinal = 0): Boolean;
+ procedure Change; dynamic;
+ procedure Assign(Source: TFreeBitmap);
+ function CopySubImage(Left, Top, Right, Bottom: Integer; Dest: TFreeBitmap): Boolean;
+ function PasteSubImage(Src: TFreeBitmap; Left, Top: Integer; Alpha: Integer = 256): Boolean;
+ procedure Clear; virtual;
+ function Load(const FileName: string; Flag: Integer = 0): Boolean;
+ function LoadU(const FileName: WideString; Flag: Integer = 0): Boolean;
+ function LoadFromHandle(IO: PFreeImageIO; Handle: fi_handle; Flag: Integer = 0): Boolean;
+ function LoadFromMemory(MemIO: TFreeMemoryIO; Flag: Integer = 0): Boolean;
+ function LoadFromStream(Stream: TStream; Flag: Integer = 0): Boolean;
+ // save functions
+ function CanSave(fif: FREE_IMAGE_FORMAT): Boolean;
+ function Save(const FileName: string; Flag: Integer = 0): Boolean;
+ function SaveU(const FileName: WideString; Flag: Integer = 0): Boolean;
+ function SaveToHandle(fif: FREE_IMAGE_FORMAT; IO: PFreeImageIO; Handle: fi_handle; Flag: Integer = 0): Boolean;
+ function SaveToMemory(fif: FREE_IMAGE_FORMAT; MemIO: TFreeMemoryIO; Flag: Integer = 0): Boolean;
+ function SaveToStream(fif: FREE_IMAGE_FORMAT; Stream: TStream; Flag: Integer = 0): Boolean;
+ // image information
+ function GetImageType: FREE_IMAGE_TYPE;
+ function GetWidth: Integer;
+ function GetHeight: Integer;
+ function GetScanWidth: Integer;
+ function IsValid: Boolean; override;
+ function GetInfo: PBitmapInfo;
+ function GetInfoHeader: PBitmapInfoHeader;
+ function GetImageSize: Cardinal;
+ function GetBitsPerPixel: Integer;
+ function GetLine: Integer;
+ function GetHorizontalResolution: Double;
+ function GetVerticalResolution: Double;
+ procedure SetHorizontalResolution(Value: Double);
+ procedure SetVerticalResolution(Value: Double);
+ // palette operations
+ function GetPalette: PRGBQUAD;
+ function GetPaletteSize: Integer;
+ function GetColorsUsed: Integer;
+ function GetColorType: FREE_IMAGE_COLOR_TYPE;
+ function IsGrayScale: Boolean;
+ // pixels access
+ function AccessPixels: PByte;
+ function GetScanLine(ScanLine: Integer): PByte;
+ function GetPixelIndex(X, Y: Cardinal; var Value: PByte): Boolean;
+ function GetPixelColor(X, Y: Cardinal; Value: PRGBQUAD): Boolean;
+ function SetPixelIndex(X, Y: Cardinal; Value: PByte): Boolean;
+ function SetPixelColor(X, Y: Cardinal; Value: PRGBQUAD): Boolean;
+ // convertion
+ function ConvertToStandardType(ScaleLinear: Boolean): Boolean;
+ function ConvertToType(ImageType: FREE_IMAGE_TYPE; ScaleLinear: Boolean): Boolean;
+ function Threshold(T: Byte): Boolean;
+ function ConvertTo4Bits: Boolean;
+ function ConvertTo8Bits: Boolean;
+ function ConvertTo16Bits555: Boolean;
+ function ConvertTo16Bits565: Boolean;
+ function ConvertTo24Bits: Boolean;
+ function ConvertTo32Bits: Boolean;
+ function ConvertToGrayscale: Boolean;
+ function ColorQuantize(Algorithm: FREE_IMAGE_QUANTIZE): Boolean;
+ function Dither(Algorithm: FREE_IMAGE_DITHER): Boolean;
+ function ConvertToRGBF: Boolean;
+ function ToneMapping(TMO: FREE_IMAGE_TMO; FirstParam, SecondParam: Double): Boolean;
+ // transparency
+ function IsTransparent: Boolean;
+ function GetTransparencyCount: Cardinal;
+ function GetTransparencyTable: PByte;
+ procedure SetTransparencyTable(Table: PByte; Count: Integer);
+ function HasFileBkColor: Boolean;
+ function GetFileBkColor(var BkColor: PRGBQuad): Boolean;
+ function SetFileBkColor(BkColor: PRGBQuad): Boolean;
+ // channel processing routines
+ function GetChannel(Bitmap: TFreeBitmap; Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+ function SetChannel(Bitmap: TFreeBitmap; Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+ function SplitChannels(RedChannel, GreenChannel, BlueChannel: TFreeBitmap): Boolean;
+ function CombineChannels(Red, Green, Blue: TFreeBitmap): Boolean;
+ // rotation and flipping
+ function RotateEx(Angle, XShift, YShift, XOrigin, YOrigin: Double; UseMask: Boolean): Boolean;
+ function Rotate(Angle: Double): Boolean;
+ function FlipHorizontal: Boolean;
+ function FlipVertical: Boolean;
+ // color manipulation routines
+ function Invert: Boolean;
+ function AdjustCurve(Lut: PByte; Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+ function AdjustGamma(Gamma: Double): Boolean;
+ function AdjustBrightness(Percentage: Double): Boolean;
+ function AdjustContrast(Percentage: Double): Boolean;
+ function GetHistogram(Histo: PDWORD; Channel: FREE_IMAGE_COLOR_CHANNEL = FICC_BLACK): Boolean;
+ // upsampling / downsampling
+ procedure MakeThumbnail(const Width, Height: Integer; DestBitmap: TFreeBitmap);
+ function Rescale(NewWidth, NewHeight: Integer; Filter: FREE_IMAGE_FILTER; Dest: TFreeBitmap = nil): Boolean;
+ // metadata routines
+ function FindFirstMetadata(Model: FREE_IMAGE_MDMODEL; var Tag: TFreeTag): PFIMETADATA;
+ function FindNextMetadata(MDHandle: PFIMETADATA; var Tag: TFreeTag): Boolean;
+ procedure FindCloseMetadata(MDHandle: PFIMETADATA);
+ function SetMetadata(Model: FREE_IMAGE_MDMODEL; const Key: string; Tag: TFreeTag): Boolean;
+ function GetMetadata(Model: FREE_IMAGE_MDMODEL; const Key: string; var Tag: TFreeTag): Boolean;
+ function GetMetadataCount(Model: FREE_IMAGE_MDMODEL): Cardinal;
+
+ // properties
+ property Dib: PFIBITMAP read FDib write SetDib;
+ property OnChange: TNotifyEvent read FOnChange write FOnChange;
+ property OnChanging: TFreeBitmapChangingEvent read FOnChanging write FOnChanging;
+ end;
+
+ { TFreeWinBitmap }
+
+
+ { TFreeMemoryIO }
+
+ TFreeMemoryIO = class(TFreeObject)
+ private
+ FHMem: PFIMEMORY;
+ public
+ // construction and destruction
+ constructor Create(Data: PByte = nil; SizeInBytes: DWORD = 0);
+ destructor Destroy; override;
+
+ function GetFileType: FREE_IMAGE_FORMAT;
+ function Read(fif: FREE_IMAGE_FORMAT; Flag: Integer = 0): PFIBITMAP;
+ function Write(fif: FREE_IMAGE_FORMAT; dib: PFIBITMAP; Flag: Integer = 0): Boolean;
+ function Tell: Longint;
+ function Seek(Offset: Longint; Origin: Word): Boolean;
+ function Acquire(var Data: PByte; var SizeInBytes: DWORD): Boolean;
+ // overriden methods
+ function IsValid: Boolean; override;
+ end;
+
+ { TFreeMultiBitmap }
+
+ TFreeMultiBitmap = class(TFreeObject)
+ private
+ FMPage: PFIMULTIBITMAP;
+ FMemoryCache: Boolean;
+ public
+ // constructor and destructor
+ constructor Create(KeepCacheInMemory: Boolean = False);
+ destructor Destroy; override;
+
+ // methods
+ function Open(const FileName: string; CreateNew, ReadOnly: Boolean; Flags: Integer = 0): Boolean;
+ function Close(Flags: Integer = 0): Boolean;
+ function GetPageCount: Integer;
+ procedure AppendPage(Bitmap: TFreeBitmap);
+ procedure InsertPage(Page: Integer; Bitmap: TFreeBitmap);
+ procedure DeletePage(Page: Integer);
+ function MovePage(Target, Source: Integer): Boolean;
+ procedure LockPage(Page: Integer; DestBitmap: TFreeBitmap);
+ procedure UnlockPage(Bitmap: TFreeBitmap; Changed: Boolean);
+ function GetLockedPageNumbers(var Pages: Integer; var Count: Integer): Boolean;
+ // overriden methods
+ function IsValid: Boolean; override;
+
+ // properties
+ // change of this property influences only on the next opening of a file
+ property MemoryCache: Boolean read FMemoryCache write FMemoryCache;
+ end;
+
+implementation
+
+const
+ ThumbSize = 150;
+
+// marker used for clipboard copy / paste
+
+procedure SetFreeImageMarker(bmih: PBitmapInfoHeader; dib: PFIBITMAP);
+begin
+ // Windows constants goes from 0L to 5L
+ // Add $FF to avoid conflicts
+ bmih.biCompression := $FF + FreeImage_GetImageType(dib);
+end;
+
+function GetFreeImageMarker(bmih: PBitmapInfoHeader): FREE_IMAGE_TYPE;
+begin
+ Result := FREE_IMAGE_TYPE(bmih.biCompression - $FF);
+end;
+
+{ TFreePersistent }
+
+function TFreeObject.IsValid: Boolean;
+begin
+ Result := False
+end;
+
+{ TFreeBitmap }
+
+function TFreeBitmap.AccessPixels: PByte;
+begin
+ Result := FreeImage_GetBits(FDib)
+end;
+
+function TFreeBitmap.AdjustBrightness(Percentage: Double): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_AdjustBrightness(FDib, Percentage);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.AdjustContrast(Percentage: Double): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_AdjustContrast(FDib, Percentage);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.AdjustCurve(Lut: PByte;
+ Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_AdjustCurve(FDib, Lut, Channel);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.AdjustGamma(Gamma: Double): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_AdjustGamma(FDib, Gamma);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+procedure TFreeBitmap.Assign(Source: TFreeBitmap);
+var
+ SourceBmp: TFreeBitmap;
+ Clone: PFIBITMAP;
+begin
+ if Source = nil then
+ begin
+ Clear;
+ Exit;
+ end;
+
+ if Source is TFreeBitmap then
+ begin
+ SourceBmp := TFreeBitmap(Source);
+ if SourceBmp <> Self then
+ begin
+ if SourceBmp.IsValid then
+ begin
+ Clone := FreeImage_Clone(SourceBmp.FDib);
+ Replace(Clone);
+ end
+ else
+ Clear;
+ end;
+ end;
+end;
+
+function TFreeBitmap.CanSave(fif: FREE_IMAGE_FORMAT): Boolean;
+var
+ ImageType: FREE_IMAGE_TYPE;
+ Bpp: Word;
+begin
+ Result := False;
+ if not IsValid then Exit;
+
+ if fif <> FIF_UNKNOWN then
+ begin
+ // check that the dib can be saved in this format
+ ImageType := FreeImage_GetImageType(FDib);
+ if ImageType = FIT_BITMAP then
+ begin
+ // standard bitmap type
+ Bpp := FreeImage_GetBPP(FDib);
+ Result := FreeImage_FIFSupportsWriting(fif)
+ and FreeImage_FIFSupportsExportBPP(fif, Bpp);
+ end
+ else // special bitmap type
+ Result := FreeImage_FIFSupportsExportType(fif, ImageType);
+ end;
+end;
+
+procedure TFreeBitmap.Change;
+begin
+ if Assigned(FOnChange) then FOnChange(Self)
+end;
+
+procedure TFreeBitmap.Clear;
+begin
+ if FDib <> nil then
+ begin
+ FreeImage_Unload(FDib);
+ FDib := nil;
+ Change;
+ end;
+end;
+
+function TFreeBitmap.ColorQuantize(
+ Algorithm: FREE_IMAGE_QUANTIZE): Boolean;
+var
+ dib8: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib8 := FreeImage_ColorQuantize(FDib, Algorithm);
+ Result := Replace(dib8);
+ end
+ else
+ Result := False;
+end;
+
+function TFreeBitmap.CombineChannels(Red, Green,
+ Blue: TFreeBitmap): Boolean;
+var
+ Width, Height: Integer;
+begin
+ if FDib = nil then
+ begin
+ Width := Red.GetWidth;
+ Height := Red.GetHeight;
+ FDib := FreeImage_Allocate(Width, Height, 24, FI_RGBA_RED_MASK,
+ FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK);
+ end;
+
+ if FDib <> nil then
+ begin
+ Result := FreeImage_SetChannel(FDib, Red.FDib, FICC_RED) and
+ FreeImage_SetChannel(FDib, Green.FDib, FICC_GREEN) and
+ FreeImage_SetChannel(FDib, Blue.FDib, FICC_BLUE);
+
+ Change
+ end
+ else
+ Result := False;
+end;
+
+function TFreeBitmap.ConvertTo16Bits555: Boolean;
+var
+ dib16_555: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib16_555 := FreeImage_ConvertTo16Bits555(FDib);
+ Result := Replace(dib16_555);
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.ConvertTo16Bits565: Boolean;
+var
+ dib16_565: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib16_565 := FreeImage_ConvertTo16Bits565(FDib);
+ Result := Replace(dib16_565);
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.ConvertTo24Bits: Boolean;
+var
+ dibRGB: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dibRGB := FreeImage_ConvertTo24Bits(FDib);
+ Result := Replace(dibRGB);
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.ConvertTo32Bits: Boolean;
+var
+ dib32: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib32 := FreeImage_ConvertTo32Bits(FDib);
+ Result := Replace(dib32);
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.ConvertTo4Bits: Boolean;
+var
+ dib4: PFIBITMAP;
+begin
+ Result := False;
+ if IsValid then
+ begin
+ dib4 := FreeImage_ConvertTo4Bits(FDib);
+ Result := Replace(dib4);
+ end;
+end;
+
+function TFreeBitmap.ConvertTo8Bits: Boolean;
+var
+ dib8: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib8 := FreeImage_ConvertTo8Bits(FDib);
+ Result := Replace(dib8);
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.ConvertToGrayscale: Boolean;
+var
+ dib8: PFIBITMAP;
+begin
+ Result := False;
+
+ if IsValid then
+ begin
+ dib8 := FreeImage_ConvertToGreyscale(FDib);
+ Result := Replace(dib8);
+ end
+end;
+
+function TFreeBitmap.ConvertToRGBF: Boolean;
+var
+ ImageType: FREE_IMAGE_TYPE;
+ NewDib: PFIBITMAP;
+begin
+ Result := False;
+ if not IsValid then Exit;
+
+ ImageType := GetImageType;
+
+ if (ImageType = FIT_BITMAP) then
+ begin
+ if GetBitsPerPixel < 24 then
+ if not ConvertTo24Bits then
+ Exit
+ end;
+ NewDib := FreeImage_ConvertToRGBF(FDib);
+ Result := Replace(NewDib);
+end;
+
+function TFreeBitmap.ConvertToStandardType(ScaleLinear: Boolean): Boolean;
+var
+ dibStandard: PFIBITMAP;
+begin
+ if IsValid then
+ begin
+ dibStandard := FreeImage_ConvertToStandardType(FDib, ScaleLinear);
+ Result := Replace(dibStandard);
+ end
+ else
+ Result := False;
+end;
+
+function TFreeBitmap.ConvertToType(ImageType: FREE_IMAGE_TYPE;
+ ScaleLinear: Boolean): Boolean;
+var
+ dib: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib := FreeImage_ConvertToType(FDib, ImageType, ScaleLinear);
+ Result := Replace(dib)
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.CopySubImage(Left, Top, Right, Bottom: Integer;
+ Dest: TFreeBitmap): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Dest.FDib := FreeImage_Copy(FDib, Left, Top, Right, Bottom);
+ Result := Dest.IsValid;
+ end else
+ Result := False;
+end;
+
+constructor TFreeBitmap.Create(ImageType: FREE_IMAGE_TYPE; Width, Height,
+ Bpp: Integer);
+begin
+ inherited Create;
+
+ FDib := nil;
+ if (Width > 0) and (Height > 0) and (Bpp > 0) then
+ SetSize(ImageType, Width, Height, Bpp);
+end;
+
+destructor TFreeBitmap.Destroy;
+begin
+ if FDib <> nil then
+ FreeImage_Unload(FDib);
+ inherited;
+end;
+
+function TFreeBitmap.Dither(Algorithm: FREE_IMAGE_DITHER): Boolean;
+var
+ dib: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib := FreeImage_Dither(FDib, Algorithm);
+ Result := Replace(dib);
+ end
+ else
+ Result := False;
+end;
+
+function TFreeBitmap.DoChanging(var OldDib, NewDib: PFIBITMAP): Boolean;
+begin
+ Result := False;
+ if (OldDib <> NewDib) and Assigned(FOnChanging) then
+ FOnChanging(Self, OldDib, NewDib, Result);
+end;
+
+procedure TFreeBitmap.FindCloseMetadata(MDHandle: PFIMETADATA);
+begin
+ FreeImage_FindCloseMetadata(MDHandle);
+end;
+
+function TFreeBitmap.FindFirstMetadata(Model: FREE_IMAGE_MDMODEL;
+ var Tag: TFreeTag): PFIMETADATA;
+begin
+ Result := FreeImage_FindFirstMetadata(Model, FDib, Tag.FTag);
+end;
+
+function TFreeBitmap.FindNextMetadata(MDHandle: PFIMETADATA;
+ var Tag: TFreeTag): Boolean;
+begin
+ Result := FreeImage_FindNextMetadata(MDHandle, Tag.FTag);
+end;
+
+function TFreeBitmap.FlipHorizontal: Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_FlipHorizontal(FDib);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.FlipVertical: Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_FlipVertical(FDib);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.GetBitsPerPixel: Integer;
+begin
+ Result := FreeImage_GetBPP(FDib)
+end;
+
+function TFreeBitmap.GetChannel(Bitmap: TFreeBitmap;
+ Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Bitmap.Dib := FreeImage_GetChannel(FDib, Channel);
+ Result := Bitmap.IsValid;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.GetColorsUsed: Integer;
+begin
+ Result := FreeImage_GetColorsUsed(FDib)
+end;
+
+function TFreeBitmap.GetColorType: FREE_IMAGE_COLOR_TYPE;
+begin
+ Result := FreeImage_GetColorType(FDib);
+end;
+
+function TFreeBitmap.GetFileBkColor(var BkColor: PRGBQuad): Boolean;
+begin
+ Result := FreeImage_GetBackgroundColor(FDib, BkColor)
+end;
+
+function TFreeBitmap.GetHeight: Integer;
+begin
+ Result := FreeImage_GetHeight(FDib)
+end;
+
+function TFreeBitmap.GetHistogram(Histo: PDWORD;
+ Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+begin
+ if FDib <> nil then
+ Result := FreeImage_GetHistogram(FDib, Histo, Channel)
+ else
+ Result := False
+end;
+
+function TFreeBitmap.GetHorizontalResolution: Double;
+begin
+ Result := FreeImage_GetDotsPerMeterX(FDib) / 100
+end;
+
+function TFreeBitmap.GetImageSize: Cardinal;
+begin
+ Result := FreeImage_GetDIBSize(FDib);
+end;
+
+function TFreeBitmap.GetImageType: FREE_IMAGE_TYPE;
+begin
+ Result := FreeImage_GetImageType(FDib);
+end;
+
+function TFreeBitmap.GetInfo: PBitmapInfo;
+begin
+ Result := FreeImage_GetInfo(FDib^)
+end;
+
+function TFreeBitmap.GetInfoHeader: PBITMAPINFOHEADER;
+begin
+ Result := FreeImage_GetInfoHeader(FDib)
+end;
+
+function TFreeBitmap.GetLine: Integer;
+begin
+ Result := FreeImage_GetLine(FDib)
+end;
+
+function TFreeBitmap.GetMetadata(Model: FREE_IMAGE_MDMODEL;
+ const Key: string; var Tag: TFreeTag): Boolean;
+begin
+ Result := FreeImage_GetMetaData(Model, FDib, PChar(Key), Tag.FTag);
+end;
+
+function TFreeBitmap.GetMetadataCount(Model: FREE_IMAGE_MDMODEL): Cardinal;
+begin
+ Result := FreeImage_GetMetadataCount(Model, FDib);
+end;
+
+function TFreeBitmap.GetPalette: PRGBQUAD;
+begin
+ Result := FreeImage_GetPalette(FDib)
+end;
+
+function TFreeBitmap.GetPaletteSize: Integer;
+begin
+ Result := FreeImage_GetColorsUsed(FDib) * SizeOf(RGBQUAD)
+end;
+
+function TFreeBitmap.GetPixelColor(X, Y: Cardinal; Value: PRGBQUAD): Boolean;
+begin
+ Result := FreeImage_GetPixelColor(FDib, X, Y, Value)
+end;
+
+function TFreeBitmap.GetPixelIndex(X, Y: Cardinal;
+ var Value: PByte): Boolean;
+begin
+ Result := FreeImage_GetPixelIndex(FDib, X, Y, Value)
+end;
+
+function TFreeBitmap.GetScanLine(ScanLine: Integer): PByte;
+var
+ H: Integer;
+begin
+ H := FreeImage_GetHeight(FDib);
+ if ScanLine < H then
+ Result := FreeImage_GetScanLine(FDib, ScanLine)
+ else
+ Result := nil;
+end;
+
+function TFreeBitmap.GetScanWidth: Integer;
+begin
+ Result := FreeImage_GetPitch(FDib)
+end;
+
+function TFreeBitmap.GetTransparencyCount: Cardinal;
+begin
+ Result := FreeImage_GetTransparencyCount(FDib)
+end;
+
+function TFreeBitmap.GetTransparencyTable: PByte;
+begin
+ Result := FreeImage_GetTransparencyTable(FDib)
+end;
+
+function TFreeBitmap.GetVerticalResolution: Double;
+begin
+ Result := FreeImage_GetDotsPerMeterY(Fdib) / 100
+end;
+
+function TFreeBitmap.GetWidth: Integer;
+begin
+ Result := FreeImage_GetWidth(FDib)
+end;
+
+function TFreeBitmap.HasFileBkColor: Boolean;
+begin
+ Result := FreeImage_HasBackgroundColor(FDib)
+end;
+
+function TFreeBitmap.Invert: Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_Invert(FDib);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.IsGrayScale: Boolean;
+begin
+ Result := (FreeImage_GetBPP(FDib) = 8)
+ and (FreeImage_GetColorType(FDib) = FIC_PALETTE);
+end;
+
+function TFreeBitmap.IsTransparent: Boolean;
+begin
+ Result := FreeImage_IsTransparent(FDib);
+end;
+
+function TFreeBitmap.IsValid: Boolean;
+begin
+ Result := FDib <> nil
+end;
+
+function TFreeBitmap.Load(const FileName: string; Flag: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+
+ // check the file signature and get its format
+ fif := FreeImage_GetFileType(PChar(Filename), 0);
+ if fif = FIF_UNKNOWN then
+ // no signature?
+ // try to guess the file format from the file extention
+ fif := FreeImage_GetFIFFromFilename(PChar(FileName));
+
+ // check that the plugin has reading capabilities ...
+ if (fif <> FIF_UNKNOWN) and FreeImage_FIFSupportsReading(FIF) then
+ begin
+ // free the previous dib
+ if FDib <> nil then
+ FreeImage_Unload(dib);
+
+ // load the file
+ FDib := FreeImage_Load(fif, PChar(FileName), Flag);
+
+ Change;
+ Result := IsValid;
+ end else
+ Result := False;
+end;
+
+function TFreeBitmap.LoadFromHandle(IO: PFreeImageIO; Handle: fi_handle;
+ Flag: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+ // check the file signature and get its format
+ fif := FreeImage_GetFileTypeFromHandle(IO, Handle, 16);
+ if (fif <> FIF_UNKNOWN) and FreeImage_FIFSupportsReading(fif) then
+ begin
+ // free the previous dib
+ if FDib <> nil then
+ FreeImage_Unload(FDib);
+
+ // load the file
+ FDib := FreeImage_LoadFromHandle(fif, IO, Handle, Flag);
+
+ Change;
+ Result := IsValid;
+ end else
+ Result := False;
+end;
+
+function TFreeBitmap.LoadFromMemory(MemIO: TFreeMemoryIO;
+ Flag: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+
+ // check the file signature and get its format
+ fif := MemIO.GetFileType;
+ if (fif <> FIF_UNKNOWN) and FreeImage_FIFSupportsReading(fif) then
+ begin
+ // free the previous dib
+ if FDib <> nil then
+ FreeImage_Unload(FDib);
+
+ // load the file
+ FDib := MemIO.Read(fif, Flag);
+
+ Result := IsValid;
+ Change;
+ end else
+ Result := False;
+end;
+
+function TFreeBitmap.LoadFromStream(Stream: TStream;
+ Flag: Integer): Boolean;
+var
+ MemIO: TFreeMemoryIO;
+ Data: PByte;
+ MemStream: TMemoryStream;
+ Size: Cardinal;
+begin
+ Size := Stream.Size;
+
+ MemStream := TMemoryStream.Create;
+ try
+ MemStream.CopyFrom(Stream, Size);
+ Data := MemStream.Memory;
+
+ MemIO := TFreeMemoryIO.Create(Data, Size);
+ try
+ Result := LoadFromMemory(MemIO);
+ finally
+ MemIO.Free;
+ end;
+ finally
+ MemStream.Free;
+ end;
+end;
+
+function TFreeBitmap.LoadU(const FileName: WideString;
+ Flag: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+
+ // check the file signature and get its format
+ fif := FreeImage_GetFileTypeU(PWideChar(Filename), 0);
+ if fif = FIF_UNKNOWN then
+ // no signature?
+ // try to guess the file format from the file extention
+ fif := FreeImage_GetFIFFromFilenameU(PWideChar(FileName));
+
+ // check that the plugin has reading capabilities ...
+ if (fif <> FIF_UNKNOWN) and FreeImage_FIFSupportsReading(FIF) then
+ begin
+ // free the previous dib
+ if FDib <> nil then
+ FreeImage_Unload(dib);
+
+ // load the file
+ FDib := FreeImage_LoadU(fif, PWideChar(FileName), Flag);
+
+ Change;
+ Result := IsValid;
+ end else
+ Result := False;
+end;
+
+procedure TFreeBitmap.MakeThumbnail(const Width, Height: Integer;
+ DestBitmap: TFreeBitmap);
+type
+ PRGB24 = ^TRGB24;
+ TRGB24 = packed record
+ B: Byte;
+ G: Byte;
+ R: Byte;
+ end;
+var
+ x, y, ix, iy: integer;
+ x1, x2, x3: integer;
+
+ xscale, yscale: single;
+ iRed, iGrn, iBlu, iRatio: Longword;
+ p, c1, c2, c3, c4, c5: TRGB24;
+ pt, pt1: PRGB24;
+ iSrc, iDst, s1: integer;
+ i, j, r, g, b, tmpY: integer;
+
+ RowDest, RowSource, RowSourceStart: integer;
+ w, h: Integer;
+ dxmin, dymin: integer;
+ ny1, ny2, ny3: integer;
+ dx, dy: integer;
+ lutX, lutY: array of integer;
+
+ SrcBmp, DestBmp: PFIBITMAP;
+begin
+ if not IsValid then Exit;
+
+ if (GetWidth <= ThumbSize) and (GetHeight <= ThumbSize) then
+ begin
+ DestBitmap.Assign(Self);
+ Exit;
+ end;
+
+ w := Width;
+ h := Height;
+
+ // prepare bitmaps
+ if GetBitsPerPixel <> 24 then
+ SrcBmp := FreeImage_ConvertTo24Bits(FDib)
+ else
+ SrcBmp := FDib;
+ DestBmp := FreeImage_Allocate(w, h, 24);
+ Assert(DestBmp <> nil, 'TFreeBitmap.MakeThumbnail error');
+
+{ iDst := (w * 24 + 31) and not 31;
+ iDst := iDst div 8; //BytesPerScanline
+ iSrc := (GetWidth * 24 + 31) and not 31;
+ iSrc := iSrc div 8;
+}
+ // BytesPerScanline
+ iDst := FreeImage_GetPitch(DestBmp);
+ iSrc := FreeImage_GetPitch(SrcBmp);
+
+ xscale := 1 / (w / FreeImage_GetWidth(SrcBmp));
+ yscale := 1 / (h / FreeImage_GetHeight(SrcBmp));
+
+ // X lookup table
+ SetLength(lutX, w);
+ x1 := 0;
+ x2 := trunc(xscale);
+ for x := 0 to w - 1 do
+ begin
+ lutX[x] := x2 - x1;
+ x1 := x2;
+ x2 := trunc((x + 2) * xscale);
+ end;
+
+ // Y lookup table
+ SetLength(lutY, h);
+ x1 := 0;
+ x2 := trunc(yscale);
+ for x := 0 to h - 1 do
+ begin
+ lutY[x] := x2 - x1;
+ x1 := x2;
+ x2 := trunc((x + 2) * yscale);
+ end;
+
+ Dec(w);
+ Dec(h);
+ RowDest := integer(FreeImage_GetScanLine(DestBmp, 0));
+ RowSourceStart := integer(FreeImage_GetScanLine(SrcBmp, 0));
+ RowSource := RowSourceStart;
+
+ for y := 0 to h do
+ // resampling
+ begin
+ dy := lutY[y];
+ x1 := 0;
+ x3 := 0;
+ for x := 0 to w do // loop through row
+ begin
+ dx:= lutX[x];
+ iRed:= 0;
+ iGrn:= 0;
+ iBlu:= 0;
+ RowSource := RowSourceStart;
+ for iy := 1 to dy do
+ begin
+ pt := PRGB24(RowSource + x1);
+ for ix := 1 to dx do
+ begin
+ iRed := iRed + pt.R;
+ iGrn := iGrn + pt.G;
+ iBlu := iBlu + pt.B;
+ inc(pt);
+ end;
+ RowSource := RowSource + iSrc;
+ end;
+ iRatio := 65535 div (dx * dy);
+ pt1 := PRGB24(RowDest + x3);
+ pt1.R := (iRed * iRatio) shr 16;
+ pt1.G := (iGrn * iRatio) shr 16;
+ pt1.B := (iBlu * iRatio) shr 16;
+ x1 := x1 + 3 * dx;
+ inc(x3,3);
+ end;
+ RowDest := RowDest + iDst;
+ RowSourceStart := RowSource;
+ end; // resampling
+
+ if FreeImage_GetHeight(DestBmp) >= 3 then
+ // Sharpening...
+ begin
+ s1 := integer(FreeImage_GetScanLine(DestBmp, 0));
+ iDst := integer(FreeImage_GetScanLine(DestBmp, 1)) - s1;
+ ny1 := Integer(s1);
+ ny2 := ny1 + iDst;
+ ny3 := ny2 + iDst;
+ for y := 1 to FreeImage_GetHeight(DestBmp) - 2 do
+ begin
+ for x := 0 to FreeImage_GetWidth(DestBmp) - 3 do
+ begin
+ x1 := x * 3;
+ x2 := x1 + 3;
+ x3 := x1 + 6;
+
+ c1 := pRGB24(ny1 + x1)^;
+ c2 := pRGB24(ny1 + x3)^;
+ c3 := pRGB24(ny2 + x2)^;
+ c4 := pRGB24(ny3 + x1)^;
+ c5 := pRGB24(ny3 + x3)^;
+
+ r := (c1.R + c2.R + (c3.R * -12) + c4.R + c5.R) div -8;
+ g := (c1.G + c2.G + (c3.G * -12) + c4.G + c5.G) div -8;
+ b := (c1.B + c2.B + (c3.B * -12) + c4.B + c5.B) div -8;
+
+ if r < 0 then r := 0 else if r > 255 then r := 255;
+ if g < 0 then g := 0 else if g > 255 then g := 255;
+ if b < 0 then b := 0 else if b > 255 then b := 255;
+
+ pt1 := pRGB24(ny2 + x2);
+ pt1.R := r;
+ pt1.G := g;
+ pt1.B := b;
+ end;
+ inc(ny1, iDst);
+ inc(ny2, iDst);
+ inc(ny3, iDst);
+ end;
+ end; // sharpening
+
+ if SrcBmp <> FDib then
+ FreeImage_Unload(SrcBmp);
+ DestBitmap.Replace(DestBmp);
+end;
+
+function TFreeBitmap.PasteSubImage(Src: TFreeBitmap; Left, Top,
+ Alpha: Integer): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_Paste(FDib, Src.Dib, Left, Top, Alpha);
+ Change;
+ end else
+ Result := False;
+end;
+
+function TFreeBitmap.Replace(NewDib: PFIBITMAP): Boolean;
+begin
+ Result := False;
+ if NewDib = nil then Exit;
+
+ if not DoChanging(FDib, NewDib) and IsValid then
+ FreeImage_Unload(FDib);
+
+ FDib := NewDib;
+ Result := True;
+ Change;
+end;
+
+function TFreeBitmap.Rescale(NewWidth, NewHeight: Integer;
+ Filter: FREE_IMAGE_FILTER; Dest: TFreeBitmap): Boolean;
+var
+ Bpp: Integer;
+ DstDib: PFIBITMAP;
+begin
+ Result := False;
+
+ if FDib <> nil then
+ begin
+ Bpp := FreeImage_GetBPP(FDib);
+
+ if Bpp < 8 then
+ if not ConvertToGrayscale then Exit
+ else
+ if Bpp = 16 then
+ // convert to 24-bit
+ if not ConvertTo24Bits then Exit;
+
+ // perform upsampling / downsampling
+ DstDib := FreeImage_Rescale(FDib, NewWidth, NewHeight, Filter);
+ if Dest = nil then
+ Result := Replace(DstDib)
+ else
+ Result := Dest.Replace(DstDib)
+ end
+end;
+
+function TFreeBitmap.Rotate(Angle: Double): Boolean;
+var
+ Bpp: Integer;
+ Rotated: PFIBITMAP;
+begin
+ Result := False;
+ if IsValid then
+ begin
+ Bpp := FreeImage_GetBPP(FDib);
+ if Bpp in [1, 8, 24, 32] then
+ begin
+ Rotated := FreeImage_RotateClassic(FDib, Angle);
+ Result := Replace(Rotated);
+ end
+ end;
+end;
+
+function TFreeBitmap.RotateEx(Angle, XShift, YShift, XOrigin,
+ YOrigin: Double; UseMask: Boolean): Boolean;
+var
+ Rotated: PFIBITMAP;
+begin
+ Result := False;
+ if FDib <> nil then
+ begin
+ if FreeImage_GetBPP(FDib) >= 8 then
+ begin
+ Rotated := FreeImage_RotateEx(FDib, Angle, XShift, YShift, XOrigin, YOrigin, UseMask);
+ Result := Replace(Rotated);
+ end
+ end;
+end;
+
+function TFreeBitmap.Save(const FileName: string; Flag: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+ Result := False;
+
+ // try to guess the file format from the file extension
+ fif := FreeImage_GetFIFFromFilename(PChar(Filename));
+ if CanSave(fif) then
+ Result := FreeImage_Save(fif, FDib, PChar(FileName), Flag);
+end;
+
+function TFreeBitmap.SaveToHandle(fif: FREE_IMAGE_FORMAT; IO: PFreeImageIO;
+ Handle: fi_handle; Flag: Integer): Boolean;
+begin
+ Result := False;
+ if CanSave(fif) then
+ Result := FreeImage_SaveToHandle(fif, FDib, IO, Handle, Flag)
+end;
+
+function TFreeBitmap.SaveToMemory(fif: FREE_IMAGE_FORMAT;
+ MemIO: TFreeMemoryIO; Flag: Integer): Boolean;
+begin
+ Result := False;
+
+ if CanSave(fif) then
+ Result := MemIO.Write(fif, FDib, Flag)
+end;
+
+function TFreeBitmap.SaveToStream(fif: FREE_IMAGE_FORMAT; Stream: TStream;
+ Flag: Integer): Boolean;
+var
+ MemIO: TFreeMemoryIO;
+ Data: PByte;
+ Size: Cardinal;
+begin
+ MemIO := TFreeMemoryIO.Create;
+ try
+ Result := SaveToMemory(fif, MemIO, Flag);
+ if Result then
+ begin
+ MemIO.Acquire(Data, Size);
+ Stream.WriteBuffer(Data^, Size);
+ end;
+ finally
+ MemIO.Free;
+ end;
+end;
+
+function TFreeBitmap.SaveU(const FileName: WideString;
+ Flag: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+ Result := False;
+
+ // try to guess the file format from the file extension
+ fif := FreeImage_GetFIFFromFilenameU(PWideChar(Filename));
+ if CanSave(fif) then
+ Result := FreeImage_SaveU(fif, FDib, PWideChar(FileName), Flag);
+end;
+
+function TFreeBitmap.SetChannel(Bitmap: TFreeBitmap;
+ Channel: FREE_IMAGE_COLOR_CHANNEL): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ Result := FreeImage_SetChannel(FDib, Bitmap.FDib, Channel);
+ Change;
+ end
+ else
+ Result := False
+end;
+
+procedure TFreeBitmap.SetDib(Value: PFIBITMAP);
+begin
+ Replace(Value);
+end;
+
+function TFreeBitmap.SetFileBkColor(BkColor: PRGBQuad): Boolean;
+begin
+ Result := FreeImage_SetBackgroundColor(FDib, BkColor);
+ Change;
+end;
+
+procedure TFreeBitmap.SetHorizontalResolution(Value: Double);
+begin
+ if IsValid then
+ begin
+ FreeImage_SetDotsPerMeterX(FDib, Trunc(Value * 100 + 0.5));
+ Change;
+ end;
+end;
+
+function TFreeBitmap.SetMetadata(Model: FREE_IMAGE_MDMODEL;
+ const Key: string; Tag: TFreeTag): Boolean;
+begin
+ Result := FreeImage_SetMetadata(Model, FDib, PChar(Key), Tag.Tag);
+end;
+
+function TFreeBitmap.SetPixelColor(X, Y: Cardinal;
+ Value: PRGBQUAD): Boolean;
+begin
+ Result := FreeImage_SetPixelColor(FDib, X, Y, Value);
+ Change;
+end;
+
+function TFreeBitmap.SetPixelIndex(X, Y: Cardinal; Value: PByte): Boolean;
+begin
+ Result := FreeImage_SetPixelIndex(FDib, X, Y, Value);
+ Change;
+end;
+
+function TFreeBitmap.SetSize(ImageType: FREE_IMAGE_TYPE; Width, Height,
+ Bpp: Integer; RedMask, GreenMask, BlueMask: Cardinal): Boolean;
+var
+ Pal: PRGBQuad;
+ I: Cardinal;
+begin
+ Result := False;
+
+ if FDib <> nil then
+ FreeImage_Unload(FDib);
+
+ FDib := FreeImage_Allocate(Width, Height, Bpp, RedMask, GreenMask, BlueMask);
+ if FDib = nil then Exit;
+
+ if ImageType = FIT_BITMAP then
+ case Bpp of
+ 1, 4, 8:
+ begin
+ Pal := FreeImage_GetPalette(FDib);
+ for I := 0 to FreeImage_GetColorsUsed(FDib) - 1 do
+ begin
+ Pal.rgbBlue := I;
+ Pal.rgbGreen := I;
+ Pal.rgbRed := I;
+ Inc(Pal, SizeOf(RGBQUAD));
+ end;
+ end;
+ end;
+
+ Result := True;
+ Change;
+end;
+
+procedure TFreeBitmap.SetTransparencyTable(Table: PByte; Count: Integer);
+begin
+ FreeImage_SetTransparencyTable(FDib, Table, Count);
+ Change;
+end;
+
+procedure TFreeBitmap.SetVerticalResolution(Value: Double);
+begin
+ if IsValid then
+ begin
+ FreeImage_SetDotsPerMeterY(FDib, Trunc(Value * 100 + 0.5));
+ Change;
+ end;
+end;
+
+function TFreeBitmap.SplitChannels(RedChannel, GreenChannel,
+ BlueChannel: TFreeBitmap): Boolean;
+begin
+ if FDib <> nil then
+ begin
+ RedChannel.FDib := FreeImage_GetChannel(FDib, FICC_RED);
+ GreenChannel.FDib := FreeImage_GetChannel(FDib, FICC_GREEN);
+ BlueChannel.FDib := FreeImage_GetChannel(FDib, FICC_BLUE);
+ Result := RedChannel.IsValid and GreenChannel.IsValid and BlueChannel.IsValid;
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.Threshold(T: Byte): Boolean;
+var
+ dib1: PFIBITMAP;
+begin
+ if FDib <> nil then
+ begin
+ dib1 := FreeImage_Threshold(FDib, T);
+ Result := Replace(dib1);
+ end
+ else
+ Result := False
+end;
+
+function TFreeBitmap.ToneMapping(TMO: FREE_IMAGE_TMO; FirstParam,
+ SecondParam: Double): Boolean;
+var
+ NewDib: PFIBITMAP;
+begin
+ Result := False;
+ if not IsValid then Exit;
+
+ NewDib := FreeImage_ToneMapping(Fdib, TMO, FirstParam, SecondParam);
+ Result := Replace(NewDib);
+end;
+
+
+{ TFreeMultiBitmap }
+
+procedure TFreeMultiBitmap.AppendPage(Bitmap: TFreeBitmap);
+begin
+ if IsValid then
+ FreeImage_AppendPage(FMPage, Bitmap.FDib);
+end;
+
+function TFreeMultiBitmap.Close(Flags: Integer): Boolean;
+begin
+ Result := FreeImage_CloseMultiBitmap(FMPage, Flags);
+ FMPage := nil;
+end;
+
+constructor TFreeMultiBitmap.Create(KeepCacheInMemory: Boolean);
+begin
+ inherited Create;
+ FMemoryCache := KeepCacheInMemory;
+end;
+
+procedure TFreeMultiBitmap.DeletePage(Page: Integer);
+begin
+ if IsValid then
+ FreeImage_DeletePage(FMPage, Page);
+end;
+
+destructor TFreeMultiBitmap.Destroy;
+begin
+ if FMPage <> nil then Close;
+ inherited;
+end;
+
+function TFreeMultiBitmap.GetLockedPageNumbers(var Pages,
+ Count: Integer): Boolean;
+begin
+ Result := False;
+ if not IsValid then Exit;
+ Result := FreeImage_GetLockedPageNumbers(FMPage, Pages, Count)
+end;
+
+function TFreeMultiBitmap.GetPageCount: Integer;
+begin
+ Result := 0;
+ if IsValid then
+ Result := FreeImage_GetPageCount(FMPage)
+end;
+
+procedure TFreeMultiBitmap.InsertPage(Page: Integer; Bitmap: TFreeBitmap);
+begin
+ if IsValid then
+ FreeImage_InsertPage(FMPage, Page, Bitmap.FDib);
+end;
+
+function TFreeMultiBitmap.IsValid: Boolean;
+begin
+ Result := FMPage <> nil
+end;
+
+procedure TFreeMultiBitmap.LockPage(Page: Integer; DestBitmap: TFreeBitmap);
+begin
+ if not IsValid then Exit;
+
+ if Assigned(DestBitmap) then
+ begin
+ DestBitmap.Replace(FreeImage_LockPage(FMPage, Page));
+ end;
+end;
+
+function TFreeMultiBitmap.MovePage(Target, Source: Integer): Boolean;
+begin
+ Result := False;
+ if not IsValid then Exit;
+ Result := FreeImage_MovePage(FMPage, Target, Source);
+end;
+
+function TFreeMultiBitmap.Open(const FileName: string; CreateNew,
+ ReadOnly: Boolean; Flags: Integer): Boolean;
+var
+ fif: FREE_IMAGE_FORMAT;
+begin
+ Result := False;
+
+ // try to guess the file format from the filename
+ fif := FreeImage_GetFIFFromFilename(PChar(FileName));
+
+ // check for supported file types
+ if (fif <> FIF_UNKNOWN) and (not fif in [FIF_TIFF, FIF_ICO, FIF_GIF]) then
+ Exit;
+
+ // open the stream
+ FMPage := FreeImage_OpenMultiBitmap(fif, PChar(FileName), CreateNew, ReadOnly, FMemoryCache, Flags);
+
+ Result := FMPage <> nil;
+end;
+
+procedure TFreeMultiBitmap.UnlockPage(Bitmap: TFreeBitmap;
+ Changed: Boolean);
+begin
+ if IsValid then
+ begin
+ FreeImage_UnlockPage(FMPage, Bitmap.FDib, Changed);
+ // clear the image so that it becomes invalid.
+ // don't use Bitmap.Clear method because it calls FreeImage_Unload
+ // just clear the pointer
+ Bitmap.FDib := nil;
+ Bitmap.Change;
+ end;
+end;
+
+{ TFreeMemoryIO }
+
+function TFreeMemoryIO.Acquire(var Data: PByte;
+ var SizeInBytes: DWORD): Boolean;
+begin
+ Result := FreeImage_AcquireMemory(FHMem, Data, SizeInBytes);
+end;
+
+constructor TFreeMemoryIO.Create(Data: PByte; SizeInBytes: DWORD);
+begin
+ inherited Create;
+ FHMem := FreeImage_OpenMemory(Data, SizeInBytes);
+end;
+
+destructor TFreeMemoryIO.Destroy;
+begin
+ FreeImage_CloseMemory(FHMem);
+ inherited;
+end;
+
+function TFreeMemoryIO.GetFileType: FREE_IMAGE_FORMAT;
+begin
+ Result := FreeImage_GetFileTypeFromMemory(FHMem);
+end;
+
+function TFreeMemoryIO.IsValid: Boolean;
+begin
+ Result := FHMem <> nil
+end;
+
+function TFreeMemoryIO.Read(fif: FREE_IMAGE_FORMAT;
+ Flag: Integer): PFIBITMAP;
+begin
+ Result := FreeImage_LoadFromMemory(fif, FHMem, Flag)
+end;
+
+function TFreeMemoryIO.Seek(Offset: Longint; Origin: Word): Boolean;
+begin
+ Result := FreeImage_SeekMemory(FHMem, Offset, Origin)
+end;
+
+function TFreeMemoryIO.Tell: Longint;
+begin
+ Result := FreeImage_TellMemory(FHMem)
+end;
+
+function TFreeMemoryIO.Write(fif: FREE_IMAGE_FORMAT; dib: PFIBITMAP;
+ Flag: Integer): Boolean;
+begin
+ Result := FreeImage_SaveToMemory(fif, dib, FHMem, Flag)
+end;
+
+{ TFreeTag }
+
+function TFreeTag.Clone: TFreeTag;
+var
+ CloneTag: PFITAG;
+begin
+ Result := nil;
+ if not IsValid then Exit;
+
+ CloneTag := FreeImage_CloneTag(FTag);
+ Result := TFreeTag.Create(CloneTag);
+end;
+
+constructor TFreeTag.Create(ATag: PFITAG);
+begin
+ inherited Create;
+
+ if ATag <> nil then
+ FTag := ATag
+ else
+ FTag := FreeImage_CreateTag;
+end;
+
+destructor TFreeTag.Destroy;
+begin
+ if IsValid then
+ FreeImage_DeleteTag(FTag);
+
+ inherited;
+end;
+
+function TFreeTag.GetCount: Cardinal;
+begin
+ Result := 0;
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagCount(FTag);
+end;
+
+function TFreeTag.GetDescription: string;
+begin
+ Result := '';
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagDescription(FTag);
+end;
+
+function TFreeTag.GetID: Word;
+begin
+ Result := 0;
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagID(FTag);
+end;
+
+function TFreeTag.GetKey: string;
+begin
+ Result := '';
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagKey(FTag);
+end;
+
+function TFreeTag.GetLength: Cardinal;
+begin
+ Result := 0;
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagLength(FTag);
+end;
+
+function TFreeTag.GetTagType: FREE_IMAGE_MDTYPE;
+begin
+ Result := FIDT_NOTYPE;
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagType(FTag);
+end;
+
+function TFreeTag.GetValue: Pointer;
+begin
+ Result := nil;
+ if not IsValid then Exit;
+
+ Result := FreeImage_GetTagValue(FTag);
+end;
+
+function TFreeTag.IsValid: Boolean;
+begin
+ Result := FTag <> nil;
+end;
+
+procedure TFreeTag.SetCount(const Value: Cardinal);
+begin
+ if IsValid then
+ FreeImage_SetTagCount(FTag, Value);
+end;
+
+procedure TFreeTag.SetDescription(const Value: string);
+begin
+ if IsValid then
+ FreeImage_SetTagDescription(FTag, PChar(Value));
+end;
+
+procedure TFreeTag.SetID(const Value: Word);
+begin
+ if IsValid then
+ FreeImage_SetTagID(FTag, Value);
+end;
+
+procedure TFreeTag.SetKey(const Value: string);
+begin
+ if IsValid then
+ FreeImage_SetTagKey(FTag, PChar(Value));
+end;
+
+procedure TFreeTag.SetLength(const Value: Cardinal);
+begin
+ if IsValid then
+ FreeImage_SetTagLength(FTag, Value);
+end;
+
+procedure TFreeTag.SetTagType(const Value: FREE_IMAGE_MDTYPE);
+begin
+ if IsValid then
+ FreeImage_SetTagType(FTag, Value);
+end;
+
+procedure TFreeTag.SetValue(const Value: Pointer);
+begin
+ if IsValid then
+ FreeImage_SetTagValue(FTag, Value);
+end;
+
+function TFreeTag.ToString(Model: FREE_IMAGE_MDMODEL; Make: PChar): string;
+begin
+ Result := FreeImage_TagToString(Model, FTag, Make);
+end;
+
+end.