LibreOffice Module vcl (master)  1
GraphicNativeMetadata.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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19 
21 
22 #include <vcl/gfxlink.hxx>
23 #include <tools/stream.hxx>
24 
25 #include "jpeg/Exif.hxx"
26 #include <memory>
27 
29  mRotation(0)
30 {}
31 
33 {}
34 
35 
36 bool GraphicNativeMetadata::read(Graphic const & rGraphic)
37 {
38  GfxLink aLink = rGraphic.GetGfxLink();
39  if ( aLink.GetType() != GfxLinkType::NativeJpg )
40  return false;
41 
42  sal_uInt32 aDataSize = aLink.GetDataSize();
43  if (!aDataSize)
44  return false;
45 
46  std::unique_ptr<sal_uInt8[]> aBuffer(new sal_uInt8[aDataSize]);
47 
48  memcpy(aBuffer.get(), aLink.GetData(), aDataSize);
49  SvMemoryStream aMemoryStream(aBuffer.get(), aDataSize, StreamMode::READ);
50 
51  Exif aExif;
52  aExif.read(aMemoryStream);
53  mRotation = aExif.getRotation();
54 
55  return true;
56 }
57 
58 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
bool read(SvStream &rStream)
Definition: Exif.cxx:71
GfxLink GetGfxLink() const
Definition: graph.cxx:527
unsigned char sal_uInt8
Definition: Exif.hxx:40
bool read(Graphic const &rGraphic)