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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 .
*/
#ifndef INCLUDED_VCL_INC_GRAPHICFORMATDETECTOR_HXX
#define INCLUDED_VCL_INC_GRAPHICFORMATDETECTOR_HXX
#include <tools/stream.hxx>
#include <vector>
namespace vcl
{
/***
* This function is has two modes:
* - determine the file format when bTest = false
* returns true, success
* out rFormatExtension - on success: file format string
* - verify file format when bTest = true
* returns false, if file type can't be verified
* true, if the format is verified or the format is not known
*/
VCL_DLLPUBLIC bool peekGraphicFormat(SvStream& rStream, OUString& rFormatExtension, bool bTest);
class VCL_DLLPUBLIC GraphicFormatDetector
{
public:
SvStream& mrStream;
OUString maExtension;
std::vector<sal_uInt8> maFirstBytes;
sal_uInt32 mnFirstLong;
sal_uInt32 mnSecondLong;
sal_uInt64 mnStreamPosition;
sal_uInt64 mnStreamLength;
OUString msDetectedFormat;
GraphicFormatDetector(SvStream& rStream, OUString const& rFormatExtension);
bool detect();
bool checkMET();
bool checkBMP();
bool checkWMForEMF();
bool checkPCX();
bool checkTIF();
bool checkGIF();
bool checkPNG();
bool checkJPG();
bool checkSVM();
bool checkPCD();
bool checkPSD();
bool checkEPS();
bool checkDXF();
bool checkPCT();
bool checkPBMorPGMorPPM();
bool checkRAS();
bool checkXPM();
bool checkXBM();
bool checkSVG();
bool checkTGA();
bool checkMOV();
bool checkPDF();
bool checkWEBP();
private:
/**
* @brief Checks whether mrStream needs to be uncompressed and returns a pointer to the
* to aUncompressedBuffer or a pointer to maFirstBytes if it doesn't need to be uncompressed
*
* @param aUncompressedBuffer the buffer to hold the uncompressed data
* @param nSize the amount of bytes to uncompress
* @param nRetSize the amount of bytes actually uncompressed
* @return sal_uInt8* a pointer to maFirstBytes or aUncompressed buffer
*/
sal_uInt8* checkAndUncompressBuffer(sal_uInt8* aUncompressedBuffer, sal_uInt32 nSize,
sal_uInt64& nDecompressedSize);
};
}
#endif // INCLUDED_VCL_INC_GRAPHICFORMATDETECTOR_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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