135 lines
4.2 KiB
C++
135 lines
4.2 KiB
C++
// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2006 Andreas Huggel <ahuggel@gmx.net>
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*
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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File: fujimn2.cpp
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Version: $Rev$
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Author(s): Andreas Huggel (ahu) <ahuggel@gmx.net>
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History: 15-Apr-06, ahu: created
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*/
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// *****************************************************************************
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#include "rcsid.hpp"
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EXIV2_RCSID("@(#) $Id$");
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// Define DEBUG to output debug information to std::cerr, e.g, by calling make
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// like this: make DEFS=-DDEBUG makernote2.o
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//#define DEBUG
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// *****************************************************************************
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// included header files
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#ifdef _MSC_VER
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# include "exv_msvc.h"
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#else
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# include "exv_conf.h"
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#endif
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#include "fujimn2.hpp"
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#include "tiffcomposite.hpp"
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#include "tiffparser.hpp"
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#include "types.hpp"
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// + standard includes
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#include <cstring>
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#include <cassert>
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// *****************************************************************************
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// class member definitions
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namespace Exiv2 {
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const char* FujiMnHeader::signature_ = "FUJIFILM\12\0\0\0";
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const uint32_t FujiMnHeader::size_ = 12;
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const ByteOrder FujiMnHeader::byteOrder_ = littleEndian;
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FujiMnHeader::FujiMnHeader()
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{
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read(reinterpret_cast<const byte*>(signature_), size_, byteOrder_);
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}
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bool FujiMnHeader::read(const byte* pData,
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uint32_t size,
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ByteOrder /*byteOrder*/)
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{
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assert (pData != 0);
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if (size < size_) return false;
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header_.alloc(size_);
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memcpy(header_.pData_, pData, header_.size_);
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// Read offset to the IFD relative to the start of the makernote
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// from the header. Note that we ignore the byteOrder argument
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start_ = getUShort(header_.pData_ + 8, byteOrder_);
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return true;
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} // FujiMnHeader::read
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bool FujiMnHeader::check() const
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{
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if ( static_cast<uint32_t>(header_.size_) < size_
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|| 0 != memcmp(header_.pData_, signature_, 8)) {
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return false;
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}
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return true;
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} // FujiMnHeader::check
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bool TiffFujiMn::doReadHeader(const byte* pData,
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uint32_t size,
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ByteOrder byteOrder)
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{
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return header_.read(pData, size, byteOrder);
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}
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bool TiffFujiMn::doCheckHeader() const
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{
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return header_.check();
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}
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uint32_t TiffFujiMn::doIfdOffset() const
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{
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return header_.ifdOffset();
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}
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TiffRwState::AutoPtr TiffFujiMn::doGetState(uint32_t mnOffset,
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ByteOrder /*byteOrder*/) const
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{
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// Byteorder: from the header (little endian)
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// Offsets : relative to the start of the makernote
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// Creator : standard TIFF component factory
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return TiffRwState::AutoPtr(
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new TiffRwState(header_.byteOrder(),
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mnOffset,
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TiffCreator::create));
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}
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// *************************************************************************
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// free functions
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TiffComponent* newFujiMn(uint16_t tag,
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uint16_t group,
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uint16_t mnGroup,
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const byte* /*pData*/,
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uint32_t /*size*/,
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ByteOrder /*byteOrder*/)
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{
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return new TiffFujiMn(tag, group, mnGroup);
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}
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} // namespace Exiv2
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