First multi platform version, works on Linux and Windows

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/1.1@855 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 151 insertions, 0 deletions

diff --git a/Game/Code/Classes/Ulazjpeg.pas b/Game/Code/Classes/Ulazjpeg.pas
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+{ 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.
+