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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <tools/stream.hxx>
#include <tools/degree.hxx>
namespace exif {
enum Orientation {
TOP_LEFT = 1,
TOP_RIGHT = 2,
BOTTOM_RIGHT = 3,
BOTTOM_LEFT = 4,
LEFT_TOP = 5,
RIGHT_TOP = 6,
RIGHT_BOTTOM = 7,
LEFT_BOTTOM = 8
};
};
enum Tag {
ORIENTATION = 0x0112
};
class Exif final
{
private:
exif::Orientation maOrientation;
bool mbExifPresent;
bool processJpeg(SvStream& rStream, bool bSetValue);
bool processExif(SvStream& rStream, sal_uInt16 aLength, bool bSetValue);
void processIFD(sal_uInt8* pExifData, sal_uInt16 aLength, sal_uInt16 aOffset, sal_uInt16 aNumberOfTags, bool bSetValue, bool bLittleEndian);
struct ExifIFD {
sal_uInt8 tag[2];
sal_uInt8 type[2];
sal_uInt8 count[4];
sal_uInt8 offset[4];
};
struct TiffHeader {
sal_uInt16 byteOrder;
sal_uInt16 tagAlign;
sal_uInt32 offset;
};
static exif::Orientation convertToOrientation(sal_Int32 value);
public:
Exif();
bool hasExif() const { return mbExifPresent;}
exif::Orientation getOrientation() const { return maOrientation;}
Degree10 getRotation() const;
void setOrientation(exif::Orientation orientation);
bool read(SvStream& rStream);
void write(SvStream& rStream);
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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