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Diffstat (limited to 'Game/Code/Classes/Ulazjpeg.pas')
-rw-r--r-- | Game/Code/Classes/Ulazjpeg.pas | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/Game/Code/Classes/Ulazjpeg.pas b/Game/Code/Classes/Ulazjpeg.pas new file mode 100644 index 00000000..2414002c --- /dev/null +++ b/Game/Code/Classes/Ulazjpeg.pas @@ -0,0 +1,151 @@ +{ Copyright (C) 2003 Mattias Gaertner + + This library is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published by + the Free Software Foundation; either version 2 of the License, or (at your + option) any later version. + + This program is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License + for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +} +unit Ulazjpeg; + +{$mode delphi} + +{$I switches.inc} + +interface + +uses + SysUtils, Classes, FPImage, IntfGraphics, Graphics, FPReadJPEG, FPWriteJPEG, + UConfig; + +type + TJPEGQualityRange = TFPJPEGCompressionQuality; + TJPEGPerformance = TJPEGReadPerformance; + + TJPEGImage = class(TFPImageBitmap) + private + FPerformance: TJPEGPerformance; + FProgressiveEncoding: boolean; + FQuality: TJPEGQualityRange; + protected +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 + procedure InitFPImageReader(IntfImg: TLazIntfImage; ImgReader: TFPCustomImageReader); override; +{$ELSE} + procedure InitFPImageReader(ImgReader: TFPCustomImageReader); override; +{$IFEND} + procedure FinalizeFPImageReader(ImgReader: TFPCustomImageReader); override; +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 + procedure InitFPImageWriter(IntfImg: TLazIntfImage; ImgWriter: TFPCustomImageWriter); override; +{$ELSE} + procedure InitFPImageWriter(ImgWriter: TFPCustomImageWriter); override; +{$IFEND} + public + constructor Create; override; + class function GetFileExtensions: string; override; + class function GetDefaultFPReader: TFPCustomImageReaderClass; override; + class function GetDefaultFPWriter: TFPCustomImageWriterClass; override; + public + property CompressionQuality: TJPEGQualityRange read FQuality write FQuality; + property ProgressiveEncoding: boolean read FProgressiveEncoding; + property Performance: TJPEGPerformance read FPerformance write FPerformance; + end; + +const + DefaultJPEGMimeType = 'image/jpeg'; + + +implementation + + +{ TJPEGImage } + +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 +procedure TJPEGImage.InitFPImageReader(IntfImg: TLazIntfImage; ImgReader: TFPCustomImageReader); +{$ELSE} +procedure TJPEGImage.InitFPImageReader(ImgReader: TFPCustomImageReader); +{$IFEND} +var + JPEGReader: TFPReaderJPEG; +begin + if ImgReader is TFPReaderJPEG then begin + JPEGReader:=TFPReaderJPEG(ImgReader); + JPEGReader.Performance:=Performance; +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 + JPEGReader.OnProgress:=Progress; +{$IFEND} + end; +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 + inherited InitFPImageReader(IntfImg, ImgReader); +{$ELSE} + inherited InitFPImageReader(ImgReader); +{$IFEND} +end; + +procedure TJPEGImage.FinalizeFPImageReader(ImgReader: TFPCustomImageReader); +var + JPEGReader: TFPReaderJPEG; +begin + if ImgReader is TFPReaderJPEG then begin + JPEGReader:=TFPReaderJPEG(ImgReader); + FProgressiveEncoding:=JPEGReader.ProgressiveEncoding; + end; + inherited FinalizeFPImageReader(ImgReader); +end; + +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 +procedure TJPEGImage.InitFPImageWriter(IntfImg: TLazIntfImage; ImgWriter: TFPCustomImageWriter); +{$ELSE} +procedure TJPEGImage.InitFPImageWriter(ImgWriter: TFPCustomImageWriter); +{$IFEND} +var + JPEGWriter: TFPWriterJPEG; +begin + if ImgWriter is TFPWriterJPEG then begin + JPEGWriter:=TFPWriterJPEG(ImgWriter); + if JPEGWriter<>nil then ; + JPEGWriter.ProgressiveEncoding:=ProgressiveEncoding; + JPEGWriter.CompressionQuality:=CompressionQuality; +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 + JPEGWriter.OnProgress:=Progress; +{$IFEND} + end; +{$IF LAZARUS_VERSION >= 000009024} // 0.9.24 + inherited InitFPImageWriter(IntfImg, ImgWriter); +{$ELSE} + inherited InitFPImageWriter(ImgWriter); +{$IFEND} +end; + +class function TJPEGImage.GetDefaultFPReader: TFPCustomImageReaderClass; +begin + Result:=TFPReaderJPEG; +end; + +class function TJPEGImage.GetDefaultFPWriter: TFPCustomImageWriterClass; +begin + Result:=TFPWriterJPEG; +end; + +constructor TJPEGImage.Create; +begin + inherited Create; + FPerformance:=jpBestQuality; + FProgressiveEncoding:=false; + FQuality:=75; +end; + +class function TJPEGImage.GetFileExtensions: string; +begin + Result:='jpg;jpeg'; +end; + +end. + |