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#include "public/include/XMP_Const.h"
#include "public/include/XMP_Environment.h" // ! XMP_Environment.h must be the first included header.
#include "XMPFiles/source/FileHandlers/WEBP_Handler.hpp"
#include "XMPFiles/source/FormatSupport/IPTC_Support.hpp"
#include "XMPFiles/source/FormatSupport/PSIR_Support.hpp"
#include "XMPFiles/source/FormatSupport/ReconcileLegacy.hpp"
#include "XMPFiles/source/FormatSupport/Reconcile_Impl.hpp"
#include "XMPFiles/source/FormatSupport/TIFF_Support.hpp"
#include "XMPFiles/source/FormatSupport/WEBP_Support.hpp"
#include "source/XIO.hpp"
using namespace std;
/// File format handler for WEBP.
XMPFileHandler* WEBP_MetaHandlerCTor(XMPFiles* parent)
{
return new WEBP_MetaHandler(parent);
}
// Check that the file begins with "RIFF", a 4 byte length, then the chunkType
// (WEBP).
bool WEBP_CheckFormat(XMP_FileFormat format, XMP_StringPtr filePath,
XMP_IO* file, XMPFiles* parent)
{
IgnoreParam(filePath);
IgnoreParam(parent);
XMP_Assert(format == kXMP_WEBPFile);
if (file->Length() < 12)
return false;
file->Rewind();
XMP_Uns8 chunkID[12];
file->ReadAll(chunkID, 12);
if (!CheckBytes(&chunkID[0], "RIFF", 4)) {
return false;
}
if (CheckBytes(&chunkID[8], "WEBP", 4) && format == kXMP_WEBPFile) {
return true;
}
return false;
}
WEBP_MetaHandler::WEBP_MetaHandler(XMPFiles* parent_)
: mainChunk(NULL)
, xmpChunk(NULL)
, exifMgr(NULL)
, psirMgr(NULL)
, iptcMgr(NULL)
{
this->parent = parent_;
this->handlerFlags = kWEBP_HandlerFlags;
this->stdCharForm = kXMP_Char8Bit;
this->initialFileSize = 0;
this->mainChunk = 0;
}
WEBP_MetaHandler::~WEBP_MetaHandler()
{
if (this->mainChunk) {
delete this->mainChunk;
}
if (this->exifMgr) {
delete this->exifMgr;
}
if (this->iptcMgr) {
delete this->iptcMgr;
}
if (this->psirMgr) {
delete this->psirMgr;
}
}
void WEBP_MetaHandler::CacheFileData()
{
this->containsXMP = false; // assume for now
XMP_IO* file = this->parent->ioRef;
this->initialFileSize = file->Length();
file->Rewind();
XMP_Int64 filePos = 0;
while (filePos < this->initialFileSize) {
this->mainChunk = new WEBP::Container(this);
filePos = file->Offset();
}
// covered before => internal error if it occurs
XMP_Validate(file->Offset() == this->initialFileSize,
"WEBP_MetaHandler::CacheFileData: unknown data at end of file",
kXMPErr_InternalFailure);
}
void WEBP_MetaHandler::ProcessXMP()
{
SXMPUtils::RemoveProperties(&this->xmpObj, 0, 0, kXMPUtil_DoAllProperties);
bool readOnly = false;
bool xmpOnly = false;
bool haveExif = false;
if (this->parent) {
readOnly =
!XMP_OptionIsSet(this->parent->openFlags, kXMPFiles_OpenForUpdate);
xmpOnly =
XMP_OptionIsSet(this->parent->openFlags, kXMPFiles_OpenOnlyXMP);
}
if (!xmpOnly) {
if (readOnly) {
this->exifMgr = new TIFF_MemoryReader();
}
else {
this->exifMgr = new TIFF_FileWriter();
}
this->psirMgr = new PSIR_MemoryReader();
this->iptcMgr = new IPTC_Reader();
if (this->parent) {
exifMgr->SetErrorCallback(&this->parent->errorCallback);
}
if (this->mainChunk) {
WEBP::Chunk* exifChunk = this->mainChunk->getExifChunk();
if (exifChunk != NULL) {
haveExif = true;
this->exifMgr->ParseMemoryStream(exifChunk->data.data() + 6,
exifChunk->data.size() - 6);
}
}
}
if (this->containsXMP) {
this->xmpObj.ParseFromBuffer(this->xmpPacket.c_str(),
(XMP_StringLen) this->xmpPacket.size());
}
if (haveExif) {
XMP_OptionBits options = k2XMP_FileHadExif;
if (this->containsXMP) {
options |= k2XMP_FileHadXMP;
}
TIFF_Manager& exif = *this->exifMgr;
PSIR_Manager& psir = *this->psirMgr;
IPTC_Manager& iptc = *this->iptcMgr;
ImportPhotoData(exif, iptc, psir, kDigestMatches, &this->xmpObj,
options);
// Assume that, since the file had EXIF data, some of it was mapped to
// XMP
this->containsXMP = true;
}
this->processedXMP = true;
}
void WEBP_MetaHandler::UpdateFile(bool /*doSafeUpdate*/)
{
XMP_Validate(this->needsUpdate, "nothing to update",
kXMPErr_InternalFailure);
bool xmpOnly = false;
if (this->parent) {
xmpOnly =
XMP_OptionIsSet(this->parent->openFlags, kXMPFiles_OpenOnlyXMP);
}
if (!xmpOnly && this->exifMgr) {
WEBP::Chunk* exifChunk = this->mainChunk->getExifChunk();
if (exifChunk != NULL) {
ExportPhotoData(kXMP_TIFFFile, &this->xmpObj, this->exifMgr, 0, 0);
if (this->exifMgr->IsLegacyChanged()) {
XMP_Uns8* exifPtr;
XMP_Uns32 exifLen =
this->exifMgr->UpdateMemoryStream((void**)&exifPtr);
RawDataBlock exifData(&exifChunk->data[0], &exifChunk->data[6]);
exifData.insert(exifData.begin() + 6, &exifPtr[0],
&exifPtr[exifLen]);
exifChunk->data = exifData;
exifChunk->size = exifLen + 6;
exifChunk->needsRewrite = true;
}
}
}
this->packetInfo.charForm = stdCharForm;
this->packetInfo.writeable = true;
this->packetInfo.offset = kXMPFiles_UnknownOffset;
this->packetInfo.length = kXMPFiles_UnknownLength;
this->xmpObj.SerializeToBuffer(&this->xmpPacket, kXMP_OmitPacketWrapper);
this->mainChunk->write(this);
this->needsUpdate = false; // do last for safety
}
void WEBP_MetaHandler::WriteTempFile(XMP_IO* tempRef)
{
IgnoreParam(tempRef);
XMP_Throw("WEBP_MetaHandler::WriteTempFile: Not supported (must go through "
"UpdateFile)",
kXMPErr_Unavailable);
}
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