vcl/source/filter/jpeg/Exif.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_VCL_SOURCE_FILTER_JPEG_EXIF_HXX
  21 #define INCLUDED_VCL_SOURCE_FILTER_JPEG_EXIF_HXX
  22
  23 #include <osl/endian.h>
  24 #include <vcl/graph.hxx>
  25 #include <vcl/fltcall.hxx>
  26 #include <com/sun/star/uno/Sequence.h>
  27 #include <com/sun/star/beans/PropertyValue.hpp>
  28 #include <com/sun/star/task/XStatusIndicator.hpp>
  29
  30 enum Orientation {
  31     TOP_LEFT        = 1,
  32     TOP_RIGHT       = 2,
  33     BOTTOM_RIGHT    = 3,
  34     BOTTOM_LEFT     = 4,
  35     LEFT_TOP        = 5,
  36     RIGHT_TOP       = 6,
  37     RIGHT_BOTTOM    = 7,
  38     LEFT_BOTTOM     = 8
  39 };
  40
  41 enum Tag {
  42     ORIENTATION         = 0x0112,
  43     X_RESOLUTION        = 0x011a,
  44     Y_RESOLUTION        = 0x011b,
  45     EXIF_OFFSET         = 0x8769,
  46     INTEROP_OFFSET      = 0xa005
  47 };
  48
  49 class Exif
  50 {
  51 private:
  52     Orientation maOrientation;
  53     bool mbExifPresent;
  54
  55     bool processJpeg(SvStream& rStream, bool bSetValue);
  56     bool processExif(SvStream& rStream, sal_uInt16 aLength, bool bSetValue);
  57     bool processIFD(sal_uInt8* pExifData, sal_uInt16 aLength, sal_uInt16 aOffset, sal_uInt16 aNumberOfTags, bool bSetValue, bool bMoto);
  58
  59     struct ExifIFD {
  60         sal_uInt16 tag;
  61         sal_uInt16 type;
  62         sal_uInt32 count;
  63         sal_uInt32 offset;
  64     };
  65
  66     struct TiffHeader {
  67         sal_uInt16 byteOrder;
  68         sal_uInt16 tagAlign;
  69         sal_uInt32 offset;
  70     };
  71
  72     static Orientation convertToOrientation(sal_Int32 value);
  73
  74 public :
  75     Exif();
  76     virtual ~Exif();
  77
  78     bool hasExif() { return mbExifPresent;}
  79
  80     Orientation getOrientation() { return maOrientation;}
  81     sal_Int32 getRotation();
  82
  83     void setOrientation(Orientation orientation);
  84
  85     bool read(SvStream& rStream);
  86     bool write(SvStream& rStream);
  87
  88 };
  89
  90 #endif // INCLUDED_VCL_SOURCE_FILTER_JPEG_EXIF_HXX
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */