// ***************************************************************** -*- C++ -*-
/*
* Copyright (C) 2004-2018 Exiv2 authors
* This program is part of the Exiv2 distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
*/
/*
File: cr2image.cpp
*/
// *****************************************************************************
// included header files
#include "config.h"
#include "cr2image.hpp"
#include "tiffimage.hpp"
#include "cr2header_int.hpp"
#include "tiffcomposite_int.hpp"
#include "tiffimage_int.hpp"
#include "image.hpp"
#include "error.hpp"
#include "futils.hpp"
#include "i18n.h" // NLS support.
// + standard includes
#include <iostream>
#include <iomanip>
#include <cassert>
#include <cstring>
// *****************************************************************************
// class member definitions
namespace Exiv2 {
using namespace Internal;
Cr2Image::Cr2Image(BasicIo::AutoPtr io, bool /*create*/)
: Image(ImageType::cr2, mdExif | mdIptc | mdXmp, io)
{
} // Cr2Image::Cr2Image
std::string Cr2Image::mimeType() const
{
return "image/x-canon-cr2";
}
int Cr2Image::pixelWidth() const
{
ExifData::const_iterator imageWidth = exifData_.findKey(Exiv2::ExifKey("Exif.Photo.PixelXDimension"));
if (imageWidth != exifData_.end() && imageWidth->count() > 0) {
return imageWidth->toLong();
}
return 0;
}
int Cr2Image::pixelHeight() const
{
ExifData::const_iterator imageHeight = exifData_.findKey(Exiv2::ExifKey("Exif.Photo.PixelYDimension"));
if (imageHeight != exifData_.end() && imageHeight->count() > 0) {
return imageHeight->toLong();
}
return 0;
}
void Cr2Image::printStructure(std::ostream& out, Exiv2::PrintStructureOption option,int depth)
{
if (io_->open() != 0) throw Error(kerDataSourceOpenFailed, io_->path(), strError());
io_->seek(0,BasicIo::beg);
printTiffStructure(io(),out,option,depth-1);
}
void Cr2Image::setComment(const std::string& /*comment*/)
{
// not supported
throw(Error(kerInvalidSettingForImage, "Image comment", "CR2"));
}
void Cr2Image::readMetadata()
{
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "Reading CR2 file " << io_->path() << "\n";
#endif
if (io_->open() != 0) {
throw Error(kerDataSourceOpenFailed, io_->path(), strError());
}
IoCloser closer(*io_);
// Ensure that this is the correct image type
if (!isCr2Type(*io_, false)) {
if (io_->error() || io_->eof()) throw Error(kerFailedToReadImageData);
throw Error(kerNotAnImage, "CR2");
}
clearMetadata();
ByteOrder bo = Cr2Parser::decode(exifData_,
iptcData_,
xmpData_,
io_->mmap(),
(uint32_t) io_->size());
setByteOrder(bo);
} // Cr2Image::readMetadata
void Cr2Image::writeMetadata()
{
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "Writing CR2 file " << io_->path() << "\n";
#endif
ByteOrder bo = byteOrder();
byte* pData = 0;
long size = 0;
IoCloser closer(*io_);
if (io_->open() == 0) {
// Ensure that this is the correct image type
if (isCr2Type(*io_, false)) {
pData = io_->mmap(true);
size = (long) io_->size();
Cr2Header cr2Header;
if (0 == cr2Header.read(pData, 16)) {
bo = cr2Header.byteOrder();
}
}
}
if (bo == invalidByteOrder) {
bo = littleEndian;
}
setByteOrder(bo);
Cr2Parser::encode(*io_, pData, size, bo, exifData_, iptcData_, xmpData_); // may throw
} // Cr2Image::writeMetadata
ByteOrder Cr2Parser::decode(
ExifData& exifData,
IptcData& iptcData,
XmpData& xmpData,
const byte* pData,
uint32_t size
)
{
Cr2Header cr2Header;
return TiffParserWorker::decode(exifData,
iptcData,
xmpData,
pData,
size,
Tag::root,
TiffMapping::findDecoder,
&cr2Header);
}
WriteMethod Cr2Parser::encode(
BasicIo& io,
const byte* pData,
uint32_t size,
ByteOrder byteOrder,
const ExifData& exifData,
const IptcData& iptcData,
const XmpData& xmpData
)
{
// Copy to be able to modify the Exif data
ExifData ed = exifData;
// Delete IFDs which do not occur in TIFF images
static const IfdId filteredIfds[] = {
panaRawId
};
for (unsigned int i = 0; i < EXV_COUNTOF(filteredIfds); ++i) {
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "Warning: Exif IFD " << filteredIfds[i] << " not encoded\n";
#endif
ed.erase(std::remove_if(ed.begin(),
ed.end(),
FindExifdatum(filteredIfds[i])),
ed.end());
}
std::auto_ptr<TiffHeaderBase> header(new Cr2Header(byteOrder));
OffsetWriter offsetWriter;
offsetWriter.setOrigin(OffsetWriter::cr2RawIfdOffset, Cr2Header::offset2addr(), byteOrder);
return TiffParserWorker::encode(io,
pData,
size,
ed,
iptcData,
xmpData,
Tag::root,
TiffMapping::findEncoder,
header.get(),
&offsetWriter);
}
// *************************************************************************
// free functions
Image::AutoPtr newCr2Instance(BasicIo::AutoPtr io, bool create)
{
Image::AutoPtr image(new Cr2Image(io, create));
if (!image->good()) {
image.reset();
}
return image;
}
bool isCr2Type(BasicIo& iIo, bool advance)
{
const int32_t len = 16;
byte buf[len];
iIo.read(buf, len);
if (iIo.error() || iIo.eof()) {
return false;
}
Cr2Header header;
bool rc = header.read(buf, len);
if (!advance || !rc) {
iIo.seek(-len, BasicIo::cur);
}
return rc;
}
} // namespace Exiv2