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tiffvisitor_int.cpp
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// ***************************************************************** -*- 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: tiffvisitor.cpp
Author(s): Andreas Huggel (ahu) <[email protected]>
History: 11-Apr-06, ahu: created
*/
// *****************************************************************************
// included header files
#include "config.h"
#include "tiffcomposite_int.hpp" // Do not change the order of these 2 includes,
#include "tiffvisitor_int.hpp" // see bug #487
#include "tiffimage_int.hpp"
#include "makernote_int.hpp"
#include "exif.hpp"
#include "enforce.hpp"
#include "iptc.hpp"
#include "value.hpp"
#include "image.hpp"
#include "jpgimage.hpp"
#include "sonymn_int.hpp"
#include "i18n.h" // NLS support.
// + standard includes
#include <string>
#include <iostream>
#include <iomanip>
#include <cassert>
#include <limits>
#include <ostream>
// *****************************************************************************
namespace {
//! Unary predicate that matches an Exifdatum with a given group and index.
class FindExifdatum2 {
public:
//! Constructor, initializes the object with the group and index to look for.
FindExifdatum2(Exiv2::Internal::IfdId group, int idx)
: groupName_(Exiv2::Internal::groupName(group)), idx_(idx) {}
//! Returns true if group and index match.
bool operator()(const Exiv2::Exifdatum& md) const
{
return idx_ == md.idx() && 0 == strcmp(md.groupName().c_str(), groupName_);
}
private:
const char* groupName_;
int idx_;
}; // class FindExifdatum2
Exiv2::ByteOrder stringToByteOrder(const std::string& val)
{
Exiv2::ByteOrder bo = Exiv2::invalidByteOrder;
if (0 == strcmp("II", val.c_str())) bo = Exiv2::littleEndian;
else if (0 == strcmp("MM", val.c_str())) bo = Exiv2::bigEndian;
return bo;
}
}
// *****************************************************************************
// class member definitions
namespace Exiv2 {
namespace Internal {
TiffVisitor::TiffVisitor()
{
for (int i = 0; i < events_; ++i) {
go_[i] = true;
}
}
TiffVisitor::~TiffVisitor()
{
}
void TiffVisitor::setGo(GoEvent event, bool go)
{
assert(event >= 0 && static_cast<int>(event) < events_);
go_[event] = go;
}
bool TiffVisitor::go(GoEvent event) const
{
assert(event >= 0 && static_cast<int>(event) < events_);
return go_[event];
}
void TiffVisitor::visitDirectoryNext(TiffDirectory* /*object*/)
{
}
void TiffVisitor::visitDirectoryEnd(TiffDirectory* /*object*/)
{
}
void TiffVisitor::visitIfdMakernoteEnd(TiffIfdMakernote* /*object*/)
{
}
void TiffVisitor::visitBinaryArrayEnd(TiffBinaryArray* /*object*/)
{
}
void TiffFinder::init(uint16_t tag, IfdId group)
{
tag_ = tag;
group_ = group;
tiffComponent_ = 0;
setGo(geTraverse, true);
}
TiffFinder::~TiffFinder()
{
}
void TiffFinder::findObject(TiffComponent* object)
{
if (object->tag() == tag_ && object->group() == group_) {
tiffComponent_ = object;
setGo(geTraverse, false);
}
}
void TiffFinder::visitEntry(TiffEntry* object)
{
findObject(object);
}
void TiffFinder::visitDataEntry(TiffDataEntry* object)
{
findObject(object);
}
void TiffFinder::visitImageEntry(TiffImageEntry* object)
{
findObject(object);
}
void TiffFinder::visitSizeEntry(TiffSizeEntry* object)
{
findObject(object);
}
void TiffFinder::visitDirectory(TiffDirectory* object)
{
findObject(object);
}
void TiffFinder::visitSubIfd(TiffSubIfd* object)
{
findObject(object);
}
void TiffFinder::visitMnEntry(TiffMnEntry* object)
{
findObject(object);
}
void TiffFinder::visitIfdMakernote(TiffIfdMakernote* object)
{
findObject(object);
}
void TiffFinder::visitBinaryArray(TiffBinaryArray* object)
{
findObject(object);
}
void TiffFinder::visitBinaryElement(TiffBinaryElement* object)
{
findObject(object);
}
TiffCopier::TiffCopier( TiffComponent* pRoot,
uint32_t root,
const TiffHeaderBase* pHeader,
const PrimaryGroups* pPrimaryGroups)
: pRoot_(pRoot),
root_(root),
pHeader_(pHeader),
pPrimaryGroups_(pPrimaryGroups)
{
assert(pRoot_ != 0);
assert(pHeader_ != 0);
assert(pPrimaryGroups_ != 0);
}
TiffCopier::~TiffCopier()
{
}
void TiffCopier::copyObject(TiffComponent* object)
{
assert(object != 0);
if (pHeader_->isImageTag(object->tag(), object->group(), pPrimaryGroups_)) {
TiffComponent::UniquePtr clone = object->clone();
// Assumption is that the corresponding TIFF entry doesn't exist
TiffPath tiffPath;
TiffCreator::getPath(tiffPath, object->tag(), object->group(), root_);
pRoot_->addPath(object->tag(), tiffPath, pRoot_, std::move(clone));
#ifdef EXIV2_DEBUG_MESSAGES
ExifKey key(object->tag(), groupName(object->group()));
std::cerr << "Copied " << key << "\n";
#endif
}
}
void TiffCopier::visitEntry(TiffEntry* object)
{
copyObject(object);
}
void TiffCopier::visitDataEntry(TiffDataEntry* object)
{
copyObject(object);
}
void TiffCopier::visitImageEntry(TiffImageEntry* object)
{
copyObject(object);
}
void TiffCopier::visitSizeEntry(TiffSizeEntry* object)
{
copyObject(object);
}
void TiffCopier::visitDirectory(TiffDirectory* /*object*/)
{
// Do not copy directories (avoids problems with SubIfds)
}
void TiffCopier::visitSubIfd(TiffSubIfd* object)
{
copyObject(object);
}
void TiffCopier::visitMnEntry(TiffMnEntry* object)
{
copyObject(object);
}
void TiffCopier::visitIfdMakernote(TiffIfdMakernote* object)
{
copyObject(object);
}
void TiffCopier::visitBinaryArray(TiffBinaryArray* object)
{
copyObject(object);
}
void TiffCopier::visitBinaryElement(TiffBinaryElement* object)
{
copyObject(object);
}
TiffDecoder::TiffDecoder(
ExifData& exifData,
IptcData& iptcData,
XmpData& xmpData,
TiffComponent* const pRoot,
FindDecoderFct findDecoderFct
)
: exifData_(exifData),
iptcData_(iptcData),
xmpData_(xmpData),
pRoot_(pRoot),
findDecoderFct_(findDecoderFct),
decodedIptc_(false)
{
assert(pRoot != 0);
exifData_.clear();
iptcData_.clear();
xmpData_.clear();
// Find camera make
TiffFinder finder(0x010f, ifd0Id);
pRoot_->accept(finder);
TiffEntryBase* te = dynamic_cast<TiffEntryBase*>(finder.result());
if (te && te->pValue()) {
make_ = te->pValue()->toString();
}
}
TiffDecoder::~TiffDecoder()
{
}
void TiffDecoder::visitEntry(TiffEntry* object)
{
decodeTiffEntry(object);
}
void TiffDecoder::visitDataEntry(TiffDataEntry* object)
{
decodeTiffEntry(object);
}
void TiffDecoder::visitImageEntry(TiffImageEntry* object)
{
decodeTiffEntry(object);
}
void TiffDecoder::visitSizeEntry(TiffSizeEntry* object)
{
decodeTiffEntry(object);
}
void TiffDecoder::visitDirectory(TiffDirectory* /*object*/)
{
// Nothing to do
}
void TiffDecoder::visitSubIfd(TiffSubIfd* object)
{
decodeTiffEntry(object);
}
void TiffDecoder::visitMnEntry(TiffMnEntry* object)
{
// Always decode binary makernote tag
decodeTiffEntry(object);
}
void TiffDecoder::visitIfdMakernote(TiffIfdMakernote* object)
{
assert(object != 0);
exifData_["Exif.MakerNote.Offset"] = object->mnOffset();
switch (object->byteOrder()) {
case littleEndian:
exifData_["Exif.MakerNote.ByteOrder"] = "II";
break;
case bigEndian:
exifData_["Exif.MakerNote.ByteOrder"] = "MM";
break;
case invalidByteOrder:
assert(object->byteOrder() != invalidByteOrder);
break;
}
}
void TiffDecoder::getObjData(byte const*& pData,
long& size,
uint16_t tag,
IfdId group,
const TiffEntryBase* object)
{
if (object && object->tag() == tag && object->group() == group) {
pData = object->pData();
size = object->size();
return;
}
TiffFinder finder(tag, group);
pRoot_->accept(finder);
TiffEntryBase const* te = dynamic_cast<TiffEntryBase*>(finder.result());
if (te) {
pData = te->pData();
size = te->size();
return;
}
}
void TiffDecoder::decodeXmp(const TiffEntryBase* object)
{
// add Exif tag anyway
decodeStdTiffEntry(object);
byte const* pData = 0;
long size = 0;
getObjData(pData, size, 0x02bc, ifd0Id, object);
if (pData) {
std::string xmpPacket;
xmpPacket.assign(reinterpret_cast<const char*>(pData), size);
std::string::size_type idx = xmpPacket.find_first_of('<');
if (idx != std::string::npos && idx > 0) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "Removing " << static_cast<unsigned long>(idx)
<< " characters from the beginning of the XMP packet\n";
#endif
xmpPacket = xmpPacket.substr(idx);
}
if (XmpParser::decode(xmpData_, xmpPacket)) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "Failed to decode XMP metadata.\n";
#endif
}
}
} // TiffDecoder::decodeXmp
void TiffDecoder::decodeIptc(const TiffEntryBase* object)
{
// add Exif tag anyway
decodeStdTiffEntry(object);
// All tags are read at this point, so the first time we come here,
// find the relevant IPTC tag and decode IPTC if found
if (decodedIptc_) {
return;
}
decodedIptc_ = true;
// 1st choice: IPTCNAA
byte const* pData = 0;
long size = 0;
getObjData(pData, size, 0x83bb, ifd0Id, object);
if (pData) {
if (0 == IptcParser::decode(iptcData_, pData, size)) {
return;
}
#ifndef SUPPRESS_WARNINGS
else {
EXV_WARNING << "Failed to decode IPTC block found in "
<< "Directory Image, entry 0x83bb\n";
}
#endif
}
// 2nd choice if no IPTCNAA record found or failed to decode it:
// ImageResources
pData = 0;
size = 0;
getObjData(pData, size, 0x8649, ifd0Id, object);
if (pData) {
byte const* record = 0;
uint32_t sizeHdr = 0;
uint32_t sizeData = 0;
if (0 != Photoshop::locateIptcIrb(pData, size,
&record, &sizeHdr, &sizeData)) {
return;
}
if (0 == IptcParser::decode(iptcData_, record + sizeHdr, sizeData)) {
return;
}
#ifndef SUPPRESS_WARNINGS
else {
EXV_WARNING << "Failed to decode IPTC block found in "
<< "Directory Image, entry 0x8649\n";
}
#endif
}
} // TiffMetadataDecoder::decodeIptc
static const TagInfo* findTag(const TagInfo* pList,uint16_t tag)
{
while ( pList->tag_ != 0xffff && pList->tag_ != tag ) pList++;
return pList->tag_ != 0xffff ? pList : NULL;
}
void TiffDecoder::decodeCanonAFInfo(const TiffEntryBase* object) {
// report Exif.Canon.AFInfo as usual
TiffDecoder::decodeStdTiffEntry(object);
if ( object->pValue()->count() < 3 || object->pValue()->typeId() != unsignedShort ) return; // insufficient data
// create vector of signedShorts from unsignedShorts in Exif.Canon.AFInfo
std::vector<int16_t> ints;
std::vector<uint16_t> uint;
for (int i = 0; i < object->pValue()->count(); i++) {
ints.push_back((int16_t) object->pValue()->toLong(i));
uint.push_back((uint16_t) object->pValue()->toLong(i));
}
// Check this is AFInfo2 (ints[0] = bytes in object)
if ( ints[0] != object->pValue()->count()*2 ) return ;
std::string familyGroup(std::string("Exif.") + groupName(object->group()) + ".");
const uint16_t nPoints = uint.at(2);
const uint16_t nMasks = (nPoints+15)/(sizeof(uint16_t) * 8);
int nStart = 0;
struct {
uint16_t tag ;
uint16_t size ;
bool bSigned;
} records[] = {
{ 0x2600 , 1 , true }, // AFInfoSize
{ 0x2601 , 1 , true }, // AFAreaMode
{ 0x2602 , 1 , true }, // AFNumPoints
{ 0x2603 , 1 , true }, // AFValidPoints
{ 0x2604 , 1 , true }, // AFCanonImageWidth
{ 0x2605 , 1 , true }, // AFCanonImageHeight
{ 0x2606 , 1 , true }, // AFImageWidth"
{ 0x2607 , 1 , true }, // AFImageHeight
{ 0x2608 , nPoints , true }, // AFAreaWidths
{ 0x2609 , nPoints , true }, // AFAreaHeights
{ 0x260a , nPoints , true }, // AFXPositions
{ 0x260b , nPoints , true }, // AFYPositions
{ 0x260c , nMasks , false }, // AFPointsInFocus
{ 0x260d , nMasks , false }, // AFPointsSelected
{ 0x260e , nMasks , false }, // AFPrimaryPoint
{ 0xffff , 0 , true } // end marker
};
// check we have enough data!
uint16_t count = 0;
for ( uint16_t i = 0; records[i].tag != 0xffff ; i++) count += records[i].size ;
if ( count > ints.size() ) return ;
for ( uint16_t i = 0; records[i].tag != 0xffff ; i++) {
const TagInfo* pTags = ExifTags::tagList("Canon") ;
const TagInfo* pTag = findTag(pTags,records[i].tag);
if ( pTag ) {
auto v = Exiv2::Value::create(records[i].bSigned?Exiv2::signedShort:Exiv2::unsignedShort);
std::ostringstream s;
if ( records[i].bSigned ) {
for ( int16_t k = 0 ; k < records[i].size ; k++ ) s << " " << ints.at(nStart++);
} else {
for ( int16_t k = 0 ; k < records[i].size ; k++ ) s << " " << uint.at(nStart++);
}
v->read(s.str());
exifData_[familyGroup + pTag->name_] = *v;
}
}
}
void TiffDecoder::decodeTiffEntry(const TiffEntryBase* object)
{
assert(object != 0);
// Don't decode the entry if value is not set
if (!object->pValue()) return;
const DecoderFct decoderFct = findDecoderFct_(make_,
object->tag(),
object->group());
// skip decoding if decoderFct == 0
if (decoderFct) {
EXV_CALL_MEMBER_FN(*this, decoderFct)(object);
}
} // TiffDecoder::decodeTiffEntry
void TiffDecoder::decodeStdTiffEntry(const TiffEntryBase* object)
{
assert(object != 0);
ExifKey key(object->tag(), groupName(object->group()));
key.setIdx(object->idx());
exifData_.add(key, object->pValue());
} // TiffDecoder::decodeTiffEntry
void TiffDecoder::visitBinaryArray(TiffBinaryArray* object)
{
if (object->cfg() == 0 || !object->decoded()) {
decodeTiffEntry(object);
}
}
void TiffDecoder::visitBinaryElement(TiffBinaryElement* object)
{
decodeTiffEntry(object);
}
TiffEncoder::TiffEncoder(
const ExifData& exifData,
const IptcData& iptcData,
const XmpData& xmpData,
TiffComponent* pRoot,
const bool isNewImage,
const PrimaryGroups* pPrimaryGroups,
const TiffHeaderBase* pHeader,
FindEncoderFct findEncoderFct
)
: exifData_(exifData),
iptcData_(iptcData),
xmpData_(xmpData),
del_(true),
pHeader_(pHeader),
pRoot_(pRoot),
isNewImage_(isNewImage),
pPrimaryGroups_(pPrimaryGroups),
pSourceTree_(0),
findEncoderFct_(findEncoderFct),
dirty_(false),
writeMethod_(wmNonIntrusive)
{
assert(pRoot != 0);
assert(pPrimaryGroups != 0);
assert(pHeader != 0);
byteOrder_ = pHeader->byteOrder();
origByteOrder_ = byteOrder_;
encodeIptc();
encodeXmp();
// Find camera make
ExifKey key("Exif.Image.Make");
ExifData::const_iterator pos = exifData_.findKey(key);
if (pos != exifData_.end()) {
make_ = pos->toString();
}
if (make_.empty() && pRoot_) {
TiffFinder finder(0x010f, ifd0Id);
pRoot_->accept(finder);
TiffEntryBase* te = dynamic_cast<TiffEntryBase*>(finder.result());
if (te && te->pValue()) {
make_ = te->pValue()->toString();
}
}
}
TiffEncoder::~TiffEncoder()
{
}
void TiffEncoder::encodeIptc()
{
// Update IPTCNAA Exif tag, if it exists. Delete the tag if there
// is no IPTC data anymore.
// If there is new IPTC data and Exif.Image.ImageResources does
// not exist, create a new IPTCNAA Exif tag.
bool del = false;
ExifKey iptcNaaKey("Exif.Image.IPTCNAA");
ExifData::iterator pos = exifData_.findKey(iptcNaaKey);
if (pos != exifData_.end()) {
iptcNaaKey.setIdx(pos->idx());
exifData_.erase(pos);
del = true;
}
DataBuf rawIptc = IptcParser::encode(iptcData_);
ExifKey irbKey("Exif.Image.ImageResources");
pos = exifData_.findKey(irbKey);
if (pos != exifData_.end()) {
irbKey.setIdx(pos->idx());
}
if (rawIptc.size_ != 0 && (del || pos == exifData_.end())) {
Value::UniquePtr value = Value::create(unsignedLong);
DataBuf buf;
if (rawIptc.size_ % 4 != 0) {
// Pad the last unsignedLong value with 0s
buf.alloc((rawIptc.size_ / 4) * 4 + 4);
memset(buf.pData_, 0x0, buf.size_);
memcpy(buf.pData_, rawIptc.pData_, rawIptc.size_);
}
else {
buf = rawIptc; // Note: This resets rawIptc
}
value->read(buf.pData_, buf.size_, byteOrder_);
Exifdatum iptcDatum(iptcNaaKey, value.get());
exifData_.add(iptcDatum);
pos = exifData_.findKey(irbKey); // needed after add()
}
// Also update IPTC IRB in Exif.Image.ImageResources if it exists,
// but don't create it if not.
if (pos != exifData_.end()) {
DataBuf irbBuf(pos->value().size());
pos->value().copy(irbBuf.pData_, invalidByteOrder);
irbBuf = Photoshop::setIptcIrb(irbBuf.pData_, irbBuf.size_, iptcData_);
exifData_.erase(pos);
if (irbBuf.size_ != 0) {
Value::UniquePtr value = Value::create(unsignedByte);
value->read(irbBuf.pData_, irbBuf.size_, invalidByteOrder);
Exifdatum iptcDatum(irbKey, value.get());
exifData_.add(iptcDatum);
}
}
} // TiffEncoder::encodeIptc
void TiffEncoder::encodeXmp()
{
#ifdef EXV_HAVE_XMP_TOOLKIT
ExifKey xmpKey("Exif.Image.XMLPacket");
// Remove any existing XMP Exif tag
ExifData::iterator pos = exifData_.findKey(xmpKey);
if (pos != exifData_.end()) {
xmpKey.setIdx(pos->idx());
exifData_.erase(pos);
}
std::string xmpPacket;
if ( xmpData_.usePacket() ) {
xmpPacket = xmpData_.xmpPacket();
} else {
if (XmpParser::encode(xmpPacket, xmpData_) > 1) {
#ifndef SUPPRESS_WARNINGS
EXV_ERROR << "Failed to encode XMP metadata.\n";
#endif
}
}
if (!xmpPacket.empty()) {
// Set the XMP Exif tag to the new value
Value::UniquePtr value = Value::create(unsignedByte);
value->read(reinterpret_cast<const byte*>(&xmpPacket[0]),
static_cast<long>(xmpPacket.size()),
invalidByteOrder);
Exifdatum xmpDatum(xmpKey, value.get());
exifData_.add(xmpDatum);
}
#endif
} // TiffEncoder::encodeXmp
void TiffEncoder::setDirty(bool flag)
{
dirty_ = flag;
setGo(geTraverse, !flag);
}
bool TiffEncoder::dirty() const
{
if (dirty_ || exifData_.count() > 0) return true;
return false;
}
void TiffEncoder::visitEntry(TiffEntry* object)
{
encodeTiffComponent(object);
}
void TiffEncoder::visitDataEntry(TiffDataEntry* object)
{
encodeTiffComponent(object);
}
void TiffEncoder::visitImageEntry(TiffImageEntry* object)
{
encodeTiffComponent(object);
}
void TiffEncoder::visitSizeEntry(TiffSizeEntry* object)
{
encodeTiffComponent(object);
}
void TiffEncoder::visitDirectory(TiffDirectory* /*object*/)
{
// Nothing to do
}
void TiffEncoder::visitDirectoryNext(TiffDirectory* object)
{
// Update type and count in IFD entries, in case they changed
assert(object != 0);
byte* p = object->start() + 2;
for (TiffDirectory::Components::iterator i = object->components_.begin();
i != object->components_.end(); ++i) {
p += updateDirEntry(p, byteOrder(), *i);
}
}
uint32_t TiffEncoder::updateDirEntry(byte* buf,
ByteOrder byteOrder,
TiffComponent* pTiffComponent) const
{
assert(buf);
assert(pTiffComponent);
TiffEntryBase* pTiffEntry = dynamic_cast<TiffEntryBase*>(pTiffComponent);
assert(pTiffEntry);
us2Data(buf + 2, pTiffEntry->tiffType(), byteOrder);
ul2Data(buf + 4, pTiffEntry->count(), byteOrder);
// Move data to offset field, if it fits and is not yet there.
if (pTiffEntry->size() <= 4 && buf + 8 != pTiffEntry->pData()) {
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "Copying data for tag " << pTiffEntry->tag()
<< " to offset area.\n";
#endif
memset(buf + 8, 0x0, 4);
memcpy(buf + 8, pTiffEntry->pData(), pTiffEntry->size());
memset(const_cast<byte*>(pTiffEntry->pData()), 0x0, pTiffEntry->size());
}
return 12;
}
void TiffEncoder::visitSubIfd(TiffSubIfd* object)
{
encodeTiffComponent(object);
}
void TiffEncoder::visitMnEntry(TiffMnEntry* object)
{
// Test is required here as well as in the callback encoder function
if (!object->mn_) {
encodeTiffComponent(object);
}
else if (del_) {
// The makernote is made up of decoded tags, delete binary tag
ExifKey key(object->tag(), groupName(object->group()));
ExifData::iterator pos = exifData_.findKey(key);
if (pos != exifData_.end()) exifData_.erase(pos);
}
}
void TiffEncoder::visitIfdMakernote(TiffIfdMakernote* object)
{
assert(object != 0);
ExifData::iterator pos = exifData_.findKey(ExifKey("Exif.MakerNote.ByteOrder"));
if (pos != exifData_.end()) {
// Set Makernote byte order
ByteOrder bo = stringToByteOrder(pos->toString());
if (bo != invalidByteOrder && bo != object->byteOrder()) {
object->setByteOrder(bo);
setDirty();
}
if (del_)
exifData_.erase(pos);
}
if (del_) {
// Remove remaining synthesized tags
static const char* synthesizedTags[] = {
"Exif.MakerNote.Offset",
};
for (unsigned int i = 0; i < EXV_COUNTOF(synthesizedTags); ++i) {
pos = exifData_.findKey(ExifKey(synthesizedTags[i]));
if (pos != exifData_.end())
exifData_.erase(pos);
}
}
// Modify encoder for Makernote peculiarities, byte order
byteOrder_ = object->byteOrder();
} // TiffEncoder::visitIfdMakernote
void TiffEncoder::visitIfdMakernoteEnd(TiffIfdMakernote* /*object*/)
{
// Reset byte order back to that from the c'tor
byteOrder_ = origByteOrder_;
} // TiffEncoder::visitIfdMakernoteEnd
void TiffEncoder::visitBinaryArray(TiffBinaryArray* object)
{
if (object->cfg() == 0 || !object->decoded()) {
encodeTiffComponent(object);
}
}
void TiffEncoder::visitBinaryArrayEnd(TiffBinaryArray* object)
{
assert(object != 0);
if (object->cfg() == 0 || !object->decoded()) return;
std::uint32_t size = object->TiffEntryBase::doSize();
if (size == 0) return;
if (!object->initialize(pRoot_)) return;
// Re-encrypt buffer if necessary
CryptFct cryptFct = object->cfg()->cryptFct_;
if ( cryptFct == sonyTagDecipher ) {
cryptFct = sonyTagEncipher;
}
if (cryptFct != 0) {
const byte* pData = object->pData();
DataBuf buf = cryptFct(object->tag(), pData, size, pRoot_);
if (buf.size_ > 0) {
pData = buf.pData_;
size = static_cast<std::uint32_t>(buf.size_);
}
if (!object->updOrigDataBuf(pData, size)) {
setDirty();
}
}
}
void TiffEncoder::visitBinaryElement(TiffBinaryElement* object)
{
// Temporarily overwrite byteorder according to that of the binary element
ByteOrder boOrig = byteOrder_;
if (object->elByteOrder() != invalidByteOrder) byteOrder_ = object->elByteOrder();
encodeTiffComponent(object);
byteOrder_ = boOrig;
}
bool TiffEncoder::isImageTag(uint16_t tag, IfdId group) const
{
if (!isNewImage_ && pHeader_->isImageTag(tag, group, pPrimaryGroups_)) {
return true;
}
return false;
}
void TiffEncoder::encodeTiffComponent(
TiffEntryBase* object,
const Exifdatum* datum
)
{
assert(object != 0);
ExifData::iterator pos = exifData_.end();
const Exifdatum* ed = datum;
if (ed == 0) {
// Non-intrusive writing: find matching tag
ExifKey key(object->tag(), groupName(object->group()));
pos = exifData_.findKey(key);
if (pos != exifData_.end()) {
ed = &(*pos);
if (object->idx() != pos->idx()) {
// Try to find exact match (in case of duplicate tags)
ExifData::iterator pos2 =
std::find_if(exifData_.begin(), exifData_.end(),
FindExifdatum2(object->group(), object->idx()));
if (pos2 != exifData_.end() && pos2->key() == key.key()) {
ed = &(*pos2);
pos = pos2; // make sure we delete the correct tag below
}
}
}
else {
setDirty();
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "DELETING " << key << ", idx = " << object->idx() << "\n";
#endif
}
}
else {
// For intrusive writing, the index is used to preserve the order of
// duplicate tags
object->idx_ = ed->idx();
}
// Skip encoding image tags of existing TIFF image - they were copied earlier -
// but encode image tags of new images (creation)
if (ed && !isImageTag(object->tag(), object->group())) {
const EncoderFct fct = findEncoderFct_(make_, object->tag(), object->group());
if (fct) {
// If an encoding function is registered for the tag, use it
EXV_CALL_MEMBER_FN(*this, fct)(object, ed);
}
else {
// Else use the encode function at the object (results in a double-dispatch
// to the appropriate encoding function of the encoder.
object->encode(*this, ed);
}
}
if (del_ && pos != exifData_.end()) {
exifData_.erase(pos);
}
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "\n";
#endif
} // TiffEncoder::encodeTiffComponent
void TiffEncoder::encodeBinaryArray(TiffBinaryArray* object, const Exifdatum* datum)
{
encodeOffsetEntry(object, datum);
} // TiffEncoder::encodeBinaryArray
void TiffEncoder::encodeBinaryElement(TiffBinaryElement* object, const Exifdatum* datum)
{
encodeTiffEntryBase(object, datum);
} // TiffEncoder::encodeArrayElement
void TiffEncoder::encodeDataEntry(TiffDataEntry* object, const Exifdatum* datum)
{
encodeOffsetEntry(object, datum);
if (!dirty_ && writeMethod() == wmNonIntrusive) {
assert(object);
assert(object->pValue());
if ( object->sizeDataArea_
< static_cast<uint32_t>(object->pValue()->sizeDataArea())) {
#ifdef EXIV2_DEBUG_MESSAGES
ExifKey key(object->tag(), groupName(object->group()));
std::cerr << "DATAAREA GREW " << key << "\n";
#endif
setDirty();
}
else {
// Write the new dataarea, fill with 0x0
#ifdef EXIV2_DEBUG_MESSAGES
ExifKey key(object->tag(), groupName(object->group()));
std::cerr << "Writing data area for " << key << "\n";
#endif
DataBuf buf = object->pValue()->dataArea();
memcpy(object->pDataArea_, buf.pData_, buf.size_);
if (object->sizeDataArea_ > static_cast<uint32_t>(buf.size_)) {
memset(object->pDataArea_ + buf.size_,
0x0, object->sizeDataArea_ - buf.size_);
}
}
}
} // TiffEncoder::encodeDataEntry
void TiffEncoder::encodeTiffEntry(TiffEntry* object, const Exifdatum* datum)
{
encodeTiffEntryBase(object, datum);
} // TiffEncoder::encodeTiffEntry
void TiffEncoder::encodeImageEntry(TiffImageEntry* object, const Exifdatum* datum)