LibreOffice Module vcl (master)  1
jpeg.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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15  * License, Version 2.0 (the "License"); you may not use this file
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18  */
19 
20 #include "JpegReader.hxx"
21 #include "JpegWriter.hxx"
22 #include "jpeg.hxx"
23 
24 #include <vcl/graphicfilter.hxx>
25 
26 VCL_DLLPUBLIC bool ImportJPEG( SvStream& rInputStream, Graphic& rGraphic, GraphicFilterImportFlags nImportFlags, BitmapScopedWriteAccess* ppAccess )
27 {
28  bool bReturn = true;
29 
30  std::shared_ptr<GraphicReader> pContext = rGraphic.GetReaderContext();
31  rGraphic.SetReaderContext(nullptr);
32  JPEGReader* pJPEGReader = dynamic_cast<JPEGReader*>( pContext.get() );
33  if (!pJPEGReader)
34  {
35  pContext = std::make_shared<JPEGReader>( rInputStream, nImportFlags );
36  pJPEGReader = static_cast<JPEGReader*>( pContext.get() );
37  }
38 
39  ReadState eReadState = pJPEGReader->Read( rGraphic, nImportFlags, ppAccess );
40 
41  if( eReadState == JPEGREAD_ERROR )
42  {
43  bReturn = false;
44  }
45  else if( eReadState == JPEGREAD_NEED_MORE )
46  {
47  rGraphic.SetReaderContext( pContext );
48  }
49 
50  return bReturn;
51 }
52 
53 bool ExportJPEG(SvStream& rOutputStream, const Graphic& rGraphic,
54  const css::uno::Sequence<css::beans::PropertyValue>* pFilterData,
55  bool* pExportWasGrey)
56 {
57  JPEGWriter aJPEGWriter( rOutputStream, pFilterData, pExportWasGrey );
58  bool bReturn = aJPEGWriter.Write( rGraphic );
59  return bReturn;
60 }
61 
62 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
ReadState Read(Graphic &rGraphic, GraphicFilterImportFlags nImportFlags, BitmapScopedWriteAccess *ppAccess)
Definition: JpegReader.cxx:285
#define VCL_DLLPUBLIC
Definition: dllapi.h:29
ReadState
Definition: gifread.cxx:44
This template handles BitmapAccess the RAII way.
void SetReaderContext(const std::shared_ptr< GraphicReader > &pReader)
Definition: graph.cxx:501
bool ExportJPEG(SvStream &rOutputStream, const Graphic &rGraphic, const css::uno::Sequence< css::beans::PropertyValue > *pFilterData, bool *pExportWasGrey)
Definition: jpeg.cxx:53
std::shared_ptr< GraphicReader > & GetReaderContext()
Definition: graph.cxx:496
VCL_DLLPUBLIC bool ImportJPEG(SvStream &rInputStream, Graphic &rGraphic, GraphicFilterImportFlags nImportFlags, BitmapScopedWriteAccess *ppAccess)
Definition: jpeg.cxx:26
GraphicFilterImportFlags
bool Write(const Graphic &rGraphic)
Definition: JpegWriter.cxx:191