bool ASF_Support::UpdateFileSize ( XMP_IO* fileRef )
{
if ( fileRef == 0 ) return false;
XMP_Uns64 posCurrent = fileRef->Seek ( 0, kXMP_SeekFromCurrent );
XMP_Uns64 newSizeLE = MakeUns64LE ( fileRef->Length() );
if ( this->posFileSizeInfo != 0 ) {
fileRef->Seek ( this->posFileSizeInfo, kXMP_SeekFromStart );
} else {
// The position of the file size field is not known, find it.
ASF_ObjectBase objHeader;
// Read the Header object at the start of the file.
fileRef->Rewind();
fileRef->ReadAll ( &objHeader, kASF_ObjectBaseLen );
if ( ! IsEqualGUID ( ASF_Header_Object, objHeader.guid ) ) return false;
XMP_Uns32 childCount;
fileRef->ReadAll ( &childCount, 4 );
childCount = GetUns32LE ( &childCount );
fileRef->Seek ( 2, kXMP_SeekFromCurrent ); // Skip the 2 reserved bytes.
// Look for the File Properties object in the Header's children.
for ( ; childCount > 0; --childCount ) {
fileRef->ReadAll ( &objHeader, kASF_ObjectBaseLen );
if ( IsEqualGUID ( ASF_File_Properties_Object, objHeader.guid ) ) break;
XMP_Uns64 dataLen = GetUns64LE ( &objHeader.size ) - 24;
fileRef->Seek ( dataLen, kXMP_SeekFromCurrent ); // Skip this object's data.
}
if ( childCount == 0 ) return false;
// Seek to the file size field.
XMP_Uns64 fpoSize = GetUns64LE ( &objHeader.size );
if ( fpoSize < (16+8+16+8) ) return false;
fileRef->Seek ( 16, kXMP_SeekFromCurrent ); // Skip to the file size field.
}
fileRef->Write ( &newSizeLE, 8 ); // Write the new file size.
fileRef->Seek ( posCurrent, kXMP_SeekFromStart );
return true;
}
void ASF_LegacyManager::ConvertISODateToMSDate ( std::string& source, std::string* dest )
{
XMP_DateTime date;
SXMPUtils::ConvertToDate ( source, &date );
SXMPUtils::ConvertToUTCTime ( &date );
XMP_Int64 creationDate;
creationDate = date.nanoSecond / 100;
creationDate += (XMP_Int64 ( date.second) * (10*1000*1000) );
creationDate += (XMP_Int64 ( date.minute) * 60 * (10*1000*1000) );
creationDate += (XMP_Int64 ( date.hour) * 3600 * (10*1000*1000) );
XMP_Int32 days = (date.day - 1);
--date.month;
while ( date.month >= 1 ) {
days += DaysInMonth ( date.year, date.month );
--date.month;
}
--date.year;
while ( date.year >= 1601 ) {
days += (IsLeapYear ( date.year) ? 366 : 365 );
--date.year;
}
creationDate += (XMP_Int64 ( days) * 86400 * (10*1000*1000) );
creationDate = GetUns64LE ( &creationDate );
dest->assign ( (const char*)&creationDate, 8 );
}
bool ASF_Support::ReadObject ( XMP_IO* fileRef, ObjectState & inOutObjectState, XMP_Uns64 * objectLength, XMP_Uns64 & inOutPosition )
{
try {
XMP_Uns64 startPosition = inOutPosition;
XMP_Uns32 bytesRead;
ASF_ObjectBase objectBase;
bytesRead = fileRef->ReadAll ( &objectBase, kASF_ObjectBaseLen );
if ( bytesRead != kASF_ObjectBaseLen ) return false;
*objectLength = GetUns64LE ( &objectBase.size );
inOutPosition += *objectLength;
ObjectData newObject;
newObject.pos = startPosition;
newObject.len = *objectLength;
newObject.guid = objectBase.guid;
// xmpIsLastObject indicates, that the XMP-object is the last top-level object
// reset here, if any another object is read
inOutObjectState.xmpIsLastObject = false;
if ( IsEqualGUID ( ASF_Header_Object, newObject.guid ) ) {
// header object ?
this->ReadHeaderObject ( fileRef, inOutObjectState, newObject );
} else if ( IsEqualGUID ( ASF_XMP_Metadata, newObject.guid ) ) {
// check object for XMP GUID
inOutObjectState.xmpPos = newObject.pos + kASF_ObjectBaseLen;
inOutObjectState.xmpLen = newObject.len - kASF_ObjectBaseLen;
inOutObjectState.xmpIsLastObject = true;
inOutObjectState.xmpObject = newObject;
newObject.xmp = true;
}
inOutObjectState.objects.push_back ( newObject );
fileRef->Seek ( inOutPosition, kXMP_SeekFromStart );
} catch ( ... ) {
return false;
}
return true;
}
bool ASF_Support::WriteHeaderExtensionObject ( const std::string& buffer, std::string* header, const ASF_ObjectBase& _objectBase, const int /*reservePadding*/ )
{
if ( ! IsEqualGUID ( ASF_Header_Extension_Object, _objectBase.guid ) || (! header) || (buffer.size() < 46) ) return false;
const XMP_Uns64 offset = 46;
int startPos = header->size();
// copy header base
header->append ( buffer, 0, offset );
// read extended header-object structure beginning at the data part (offset = 46)
XMP_Uns64 read = 0;
XMP_Uns64 data = (_objectBase.size - offset);
XMP_Uns64 pos = offset;
ASF_ObjectBase objectBase;
while ( read < data ) {
memcpy ( &objectBase, &buffer[int(pos)], kASF_ObjectBaseLen );
objectBase.size = GetUns64LE ( &objectBase.size );
if ( IsEqualGUID ( ASF_Padding_Object, objectBase.guid ) ) {
// eliminate
} else {
// copy other objects
header->append ( buffer, XMP_Uns32(pos), XMP_Uns32(objectBase.size) );
}
pos += objectBase.size;
read += objectBase.size;
}
// update header extension data size
XMP_Uns32 valueUns32LE = MakeUns32LE ( header->size() - startPos - offset );
std::string newDataSize ( (const char*)&valueUns32LE, 4 );
ReplaceString ( *header, newDataSize, (startPos + 42), 4 );
// update new object size
XMP_Uns64 valueUns64LE = MakeUns64LE ( header->size() - startPos );
std::string newObjectSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( *header, newObjectSize, (startPos + 16), 8 );
return true;
}
bool ASF_Support::ReadHeaderExtensionObject ( XMP_IO* fileRef, ObjectState& /*inOutObjectState*/, const XMP_Uns64& _pos, const ASF_ObjectBase& _objectBase )
{
if ( ! IsEqualGUID ( ASF_Header_Extension_Object, _objectBase.guid) || (! legacyManager ) ) return false;
try {
// read extended header-object structure beginning at the data part (offset = 46)
const XMP_Uns64 offset = 46;
XMP_Uns64 read = 0;
XMP_Uns64 data = (_objectBase.size - offset);
XMP_Uns64 pos = (_pos + offset);
ASF_ObjectBase objectBase;
while ( read < data ) {
fileRef->Seek ( pos, kXMP_SeekFromStart );
if ( kASF_ObjectBaseLen != fileRef->Read ( &objectBase, kASF_ObjectBaseLen, true ) ) break;
objectBase.size = GetUns64LE ( &objectBase.size );
if ( IsEqualGUID ( ASF_Padding_Object, objectBase.guid ) ) {
legacyManager->SetPadding ( legacyManager->GetPadding() + (objectBase.size - 24) );
}
pos += objectBase.size;
read += objectBase.size;
}
} catch ( ... ) {
return false;
}
return true;
}
void ASF_LegacyManager::ConvertMSDateToISODate ( std::string& source, std::string* dest )
{
XMP_Int64 creationDate = GetUns64LE ( source.c_str() );
XMP_Int64 totalSecs = creationDate / (10*1000*1000);
XMP_Int32 nanoSec = ( ( XMP_Int32) (creationDate - (totalSecs * 10*1000*1000)) ) * 100;
XMP_Int32 days = (XMP_Int32) (totalSecs / 86400);
totalSecs -= ( ( XMP_Int64)days * 86400 );
XMP_Int32 hour = (XMP_Int32) (totalSecs / 3600);
totalSecs -= ( ( XMP_Int64)hour * 3600 );
XMP_Int32 minute = (XMP_Int32) (totalSecs / 60);
totalSecs -= ( ( XMP_Int64)minute * 60 );
XMP_Int32 second = (XMP_Int32)totalSecs;
// A little more simple code converts this to an XMP date string:
XMP_DateTime date;
memset ( &date, 0, sizeof ( date ) );
date.year = 1601; // The MS date origin.
date.month = 1;
date.day = 1;
date.day += days; // Add in the delta.
date.hour = hour;
date.minute = minute;
date.second = second;
date.nanoSecond = nanoSec;
date.hasTimeZone = true; // ! Needed for ConvertToUTCTime to do anything.
SXMPUtils::ConvertToUTCTime ( &date ); // Normalize the date/time.
SXMPUtils::ConvertFromDate ( date, dest ); // Convert to an ISO 8601 string.
}
bool ASF_Support::WriteHeaderObject ( XMP_IO* sourceRef, XMP_IO* destRef, const ObjectData& object, ASF_LegacyManager& _legacyManager, bool usePadding )
{
if ( ! IsEqualGUID ( ASF_Header_Object, object.guid ) ) return false;
std::string buffer;
XMP_Uns16 valueUns16LE;
XMP_Uns32 valueUns32LE;
XMP_Uns64 valueUns64LE;
try {
// read header-object structure
XMP_Uns64 pos = object.pos;
XMP_Uns32 bufferSize = kASF_ObjectBaseLen + 6;
buffer.clear();
buffer.reserve ( bufferSize );
buffer.assign ( bufferSize, ' ' );
sourceRef->Seek ( pos, kXMP_SeekFromStart );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), bufferSize );
XMP_Uns64 read = bufferSize;
pos += bufferSize;
// read contained header objects
/*XMP_Uns32 numberOfHeaders = GetUns32LE ( &buffer[24] );*/
ASF_ObjectBase objectBase;
// prepare new header in memory
std::string header;
int changedObjects = _legacyManager.changedObjects();
int exportedObjects = 0;
int writtenObjects = 0;
header.append ( buffer.c_str(), bufferSize );
while ( read < object.len ) {
sourceRef->Seek ( pos, kXMP_SeekFromStart );
if ( kASF_ObjectBaseLen != sourceRef->Read ( &objectBase, kASF_ObjectBaseLen, true ) ) break;
sourceRef->Seek ( pos, kXMP_SeekFromStart );
objectBase.size = GetUns64LE ( &objectBase.size );
int headerStartPos = header.size();
// save position of filesize-information
if ( IsEqualGUID ( ASF_File_Properties_Object, objectBase.guid ) ) {
posFileSizeInfo = (headerStartPos + 40);
}
// write objects
if ( IsEqualGUID ( ASF_File_Properties_Object, objectBase.guid ) &&
(objectBase.size >= 104) && (changedObjects & ASF_LegacyManager::objectFileProperties) ) {
// copy object and replace creation-date
buffer.reserve ( XMP_Uns32 ( objectBase.size ) );
buffer.assign ( XMP_Uns32 ( objectBase.size ), ' ' );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
header.append ( buffer, 0, XMP_Uns32( objectBase.size ) );
if ( ! _legacyManager.GetBroadcast() ) {
buffer = _legacyManager.GetField ( ASF_LegacyManager::fieldCreationDate );
ReplaceString ( header, buffer, (headerStartPos + 48), 8 );
}
exportedObjects |= ASF_LegacyManager::objectFileProperties;
} else if ( IsEqualGUID ( ASF_Content_Description_Object, objectBase.guid ) &&
(objectBase.size >= 34) && (changedObjects & ASF_LegacyManager::objectContentDescription) ) {
// re-create object with xmp-data
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
// write header only
header.append ( buffer, 0, XMP_Uns32( kASF_ObjectBaseLen ) );
// write length fields
XMP_Uns16 titleLen = _legacyManager.GetField ( ASF_LegacyManager::fieldTitle).size( );
valueUns16LE = MakeUns16LE ( titleLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 authorLen = _legacyManager.GetField ( ASF_LegacyManager::fieldAuthor).size( );
valueUns16LE = MakeUns16LE ( authorLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 copyrightLen = _legacyManager.GetField ( ASF_LegacyManager::fieldCopyright).size( );
valueUns16LE = MakeUns16LE ( copyrightLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 descriptionLen = _legacyManager.GetField ( ASF_LegacyManager::fieldDescription).size( );
valueUns16LE = MakeUns16LE ( descriptionLen );
header.append ( (const char*)&valueUns16LE, 2 );
// retrieve existing overall length of preceding fields
XMP_Uns16 precedingLen = 0;
precedingLen += GetUns16LE ( &buffer[24] ); // Title
precedingLen += GetUns16LE ( &buffer[26] ); // Author
precedingLen += GetUns16LE ( &buffer[28] ); // Copyright
precedingLen += GetUns16LE ( &buffer[30] ); // Description
// retrieve existing 'Rating' length
XMP_Uns16 ratingLen = GetUns16LE ( &buffer[32] ); // Rating
valueUns16LE = MakeUns16LE ( ratingLen );
header.append ( (const char*)&valueUns16LE, 2 );
// write field contents
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldTitle ) );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldAuthor ) );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldCopyright ) );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldDescription ) );
header.append ( buffer, (34 + precedingLen), ratingLen );
// update new object size
valueUns64LE = MakeUns64LE ( header.size() - headerStartPos );
std::string newSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newSize, (headerStartPos + 16), 8 );
exportedObjects |= ASF_LegacyManager::objectContentDescription;
} else if ( IsEqualGUID ( ASF_Content_Branding_Object, objectBase.guid ) &&
(changedObjects & ASF_LegacyManager::objectContentBranding) ) {
// re-create object with xmp-data
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
// calculate size of fields coming before 'Copyright URL'
XMP_Uns32 length = 28;
length += (GetUns32LE ( &buffer[length] ) + 4); // Banner Image Data
length += (GetUns32LE ( &buffer[length] ) + 4); // Banner Image URL
// write first part of header
header.append ( buffer, 0, length );
// copyright URL
length = _legacyManager.GetField ( ASF_LegacyManager::fieldCopyrightURL).size( );
valueUns32LE = MakeUns32LE ( length );
header.append ( (const char*)&valueUns32LE, 4 );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldCopyrightURL ) );
// update new object size
valueUns64LE = MakeUns64LE ( header.size() - headerStartPos );
std::string newSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newSize, (headerStartPos + 16), 8 );
exportedObjects |= ASF_LegacyManager::objectContentBranding;
#if ! Exclude_LicenseURL_Recon
} else if ( IsEqualGUID ( ASF_Content_Encryption_Object, objectBase.guid ) &&
(changedObjects & ASF_LegacyManager::objectContentEncryption) ) {
// re-create object with xmp-data
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
// calculate size of fields coming before 'License URL'
XMP_Uns32 length = 24;
length += (GetUns32LE ( &buffer[length] ) + 4); // Secret Data
length += (GetUns32LE ( &buffer[length] ) + 4); // Protection Type
length += (GetUns32LE ( &buffer[length] ) + 4); // Key ID
// write first part of header
header.append ( buffer, 0, length );
// License URL
length = _legacyManager.GetField ( ASF_LegacyManager::fieldLicenseURL).size( );
valueUns32LE = MakeUns32LE ( length );
header.append ( (const char*)&valueUns32LE, 4 );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldLicenseURL ) );
// update new object size
valueUns64LE = MakeUns64LE ( header.size() - headerStartPos );
std::string newSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newSize, (headerStartPos + 16), 8 );
exportedObjects |= ASF_LegacyManager::objectContentEncryption;
#endif
} else if ( IsEqualGUID ( ASF_Header_Extension_Object, objectBase.guid ) && usePadding ) {
// re-create object if padding needs to be used
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
ASF_Support::WriteHeaderExtensionObject ( buffer, &header, objectBase, 0 );
} else if ( IsEqualGUID ( ASF_Padding_Object, objectBase.guid ) && usePadding ) {
// eliminate padding (will be created as last object)
} else {
// simply copy all other objects
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
sourceRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
header.append ( buffer, 0, XMP_Uns32( objectBase.size ) );
}
pos += objectBase.size;
read += objectBase.size;
writtenObjects ++;
}
// any objects to create ?
int newObjects = (changedObjects ^ exportedObjects);
if ( newObjects ) {
// create new objects with xmp-data
int headerStartPos;
ASF_ObjectBase newObjectBase;
XMP_Uns32 length;
if ( newObjects & ASF_LegacyManager::objectContentDescription ) {
headerStartPos = header.size();
newObjectBase.guid = ASF_Content_Description_Object;
newObjectBase.size = 0;
// write object header
header.append ( (const char*)&newObjectBase, kASF_ObjectBaseLen );
XMP_Uns16 titleLen = _legacyManager.GetField ( ASF_LegacyManager::fieldTitle).size( );
valueUns16LE = MakeUns16LE ( titleLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 authorLen = _legacyManager.GetField ( ASF_LegacyManager::fieldAuthor).size( );
valueUns16LE = MakeUns16LE ( authorLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 copyrightLen = _legacyManager.GetField ( ASF_LegacyManager::fieldCopyright).size( );
valueUns16LE = MakeUns16LE ( copyrightLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 descriptionLen = _legacyManager.GetField ( ASF_LegacyManager::fieldDescription).size( );
valueUns16LE = MakeUns16LE ( descriptionLen );
header.append ( (const char*)&valueUns16LE, 2 );
XMP_Uns16 ratingLen = 0;
valueUns16LE = MakeUns16LE ( ratingLen );
header.append ( (const char*)&valueUns16LE, 2 );
// write field contents
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldTitle ) );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldAuthor ) );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldCopyright ) );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldDescription ) );
// update new object size
valueUns64LE = MakeUns64LE ( header.size() - headerStartPos );
std::string newSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newSize, (headerStartPos + 16), 8 );
newObjects &= ~ASF_LegacyManager::objectContentDescription;
writtenObjects ++;
}
if ( newObjects & ASF_LegacyManager::objectContentBranding ) {
headerStartPos = header.size();
newObjectBase.guid = ASF_Content_Branding_Object;
newObjectBase.size = 0;
// write object header
header.append ( (const char*)&newObjectBase, kASF_ObjectBaseLen );
// write 'empty' fields
header.append ( 12, '\0' );
// copyright URL
length = _legacyManager.GetField ( ASF_LegacyManager::fieldCopyrightURL).size( );
valueUns32LE = MakeUns32LE ( length );
header.append ( (const char*)&valueUns32LE, 4 );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldCopyrightURL ) );
// update new object size
valueUns64LE = MakeUns64LE ( header.size() - headerStartPos );
std::string newSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newSize, (headerStartPos + 16), 8 );
newObjects &= ~ASF_LegacyManager::objectContentBranding;
writtenObjects ++;
}
#if ! Exclude_LicenseURL_Recon
if ( newObjects & ASF_LegacyManager::objectContentEncryption ) {
headerStartPos = header.size();
newObjectBase.guid = ASF_Content_Encryption_Object;
newObjectBase.size = 0;
// write object header
header.append ( (const char*)&newObjectBase, kASF_ObjectBaseLen );
// write 'empty' fields
header.append ( 12, '\0' );
// License URL
length = _legacyManager.GetField ( ASF_LegacyManager::fieldLicenseURL).size( );
valueUns32LE = MakeUns32LE ( length );
header.append ( (const char*)&valueUns32LE, 4 );
header.append ( _legacyManager.GetField ( ASF_LegacyManager::fieldLicenseURL ) );
// update new object size
valueUns64LE = MakeUns64LE ( header.size() - headerStartPos );
std::string newSize ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newSize, (headerStartPos + 16), 8 );
newObjects &= ~ASF_LegacyManager::objectContentEncryption;
writtenObjects ++;
}
#endif
}
// create padding object ?
if ( usePadding && (header.size ( ) < object.len ) ) {
ASF_Support::CreatePaddingObject ( &header, (object.len - header.size()) );
writtenObjects ++;
}
// update new header-object size
valueUns64LE = MakeUns64LE ( header.size() );
std::string newValue ( (const char*)&valueUns64LE, 8 );
ReplaceString ( header, newValue, 16, 8 );
// update new number of Header objects
valueUns32LE = MakeUns32LE ( writtenObjects );
newValue = std::string ( (const char*)&valueUns32LE, 4 );
ReplaceString ( header, newValue, 24, 4 );
// if we are operating on the same file (in-place update), place pointer before writing
if ( sourceRef == destRef ) destRef->Seek ( object.pos, kXMP_SeekFromStart );
if ( this->progressTracker != 0 )
{
XMP_Assert ( this->progressTracker->WorkInProgress() );
this->progressTracker->AddTotalWork ( (float)header.size() );
}
// write header
destRef->Write ( header.c_str(), header.size() );
} catch ( ... ) {
return false;
}
return true;
}
bool ASF_Support::ReadHeaderObject ( XMP_IO* fileRef, ObjectState& inOutObjectState, const ObjectData& newObject )
{
if ( ! IsEqualGUID ( ASF_Header_Object, newObject.guid) || (! legacyManager ) ) return false;
std::string buffer;
legacyManager->SetPadding(0);
try {
// read header-object structure
XMP_Uns64 pos = newObject.pos;
XMP_Uns32 bufferSize = kASF_ObjectBaseLen + 6;
buffer.clear();
buffer.reserve ( bufferSize );
buffer.assign ( bufferSize, ' ' );
fileRef->Seek ( pos, kXMP_SeekFromStart );
fileRef->ReadAll ( const_cast<char*>(buffer.data()), bufferSize );
XMP_Uns64 read = bufferSize;
pos += bufferSize;
// read contained header objects
/*XMP_Uns32 numberOfHeaders = GetUns32LE ( &buffer[24] );*/
ASF_ObjectBase objectBase;
while ( read < newObject.len ) {
fileRef->Seek ( pos, kXMP_SeekFromStart );
if ( kASF_ObjectBaseLen != fileRef->Read ( &objectBase, kASF_ObjectBaseLen, true ) ) break;
fileRef->Seek ( pos, kXMP_SeekFromStart );
objectBase.size = GetUns64LE ( &objectBase.size );
if ( IsEqualGUID ( ASF_File_Properties_Object, objectBase.guid) && (objectBase.size >= 104 ) ) {
buffer.clear();
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
fileRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
// save position of filesize-information
posFileSizeInfo = (pos + 40);
// creation date
std::string sub ( buffer.substr ( 48, 8 ) );
legacyManager->SetField ( ASF_LegacyManager::fieldCreationDate, sub );
// broadcast flag set ?
XMP_Uns32 flags = GetUns32LE ( &buffer[88] );
inOutObjectState.broadcast = (flags & 1);
legacyManager->SetBroadcast ( inOutObjectState.broadcast );
legacyManager->SetObjectExists ( ASF_LegacyManager::objectFileProperties );
} else if ( IsEqualGUID ( ASF_Content_Description_Object, objectBase.guid) && (objectBase.size >= 34 ) ) {
buffer.clear();
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
fileRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
XMP_Uns16 titleLen = GetUns16LE ( &buffer[24] );
XMP_Uns16 authorLen = GetUns16LE ( &buffer[26] );
XMP_Uns16 copyrightLen = GetUns16LE ( &buffer[28] );
XMP_Uns16 descriptionLen = GetUns16LE ( &buffer[30] );
/*XMP_Uns16 ratingLen = GetUns16LE ( &buffer[32] );*/
XMP_Uns16 fieldPos = 34;
std::string titleStr = buffer.substr ( fieldPos, titleLen );
fieldPos += titleLen;
legacyManager->SetField ( ASF_LegacyManager::fieldTitle, titleStr );
std::string authorStr = buffer.substr ( fieldPos, authorLen );
fieldPos += authorLen;
legacyManager->SetField ( ASF_LegacyManager::fieldAuthor, authorStr );
std::string copyrightStr = buffer.substr ( fieldPos, copyrightLen );
fieldPos += copyrightLen;
legacyManager->SetField ( ASF_LegacyManager::fieldCopyright, copyrightStr );
std::string descriptionStr = buffer.substr ( fieldPos, descriptionLen );
fieldPos += descriptionLen;
legacyManager->SetField ( ASF_LegacyManager::fieldDescription, descriptionStr );
/* rating is currently not part of reconciliation
std::string ratingStr = buffer.substr ( fieldPos, ratingLen );
fieldPos += ratingLen;
legacyData.append ( titleStr );
*/
legacyManager->SetObjectExists ( ASF_LegacyManager::objectContentDescription );
} else if ( IsEqualGUID ( ASF_Content_Branding_Object, objectBase.guid ) ) {
buffer.clear();
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
fileRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
XMP_Uns32 fieldPos = 28;
// copyright URL is 3. element with variable size
for ( int i = 1; i <= 3 ; ++i ) {
XMP_Uns32 len = GetUns32LE ( &buffer[fieldPos] );
if ( i == 3 ) {
std::string copyrightURLStr = buffer.substr ( fieldPos + 4, len );
legacyManager->SetField ( ASF_LegacyManager::fieldCopyrightURL, copyrightURLStr );
}
fieldPos += (len + 4);
}
legacyManager->SetObjectExists ( ASF_LegacyManager::objectContentBranding );
#if ! Exclude_LicenseURL_Recon
} else if ( IsEqualGUID ( ASF_Content_Encryption_Object, objectBase.guid ) ) {
buffer.clear();
buffer.reserve ( XMP_Uns32( objectBase.size ) );
buffer.assign ( XMP_Uns32( objectBase.size ), ' ' );
fileRef->ReadAll ( const_cast<char*>(buffer.data()), XMP_Int32(objectBase.size) );
XMP_Uns32 fieldPos = 24;
// license URL is 4. element with variable size
for ( int i = 1; i <= 4 ; ++i ) {
XMP_Uns32 len = GetUns32LE ( &buffer[fieldPos] );
if ( i == 4 ) {
std::string licenseURLStr = buffer.substr ( fieldPos + 4, len );
legacyManager->SetField ( ASF_LegacyManager::fieldLicenseURL, licenseURLStr );
}
fieldPos += (len + 4);
}
legacyManager->SetObjectExists ( objectContentEncryption );
#endif
} else if ( IsEqualGUID ( ASF_Padding_Object, objectBase.guid ) ) {
legacyManager->SetPadding ( legacyManager->GetPadding() + (objectBase.size - 24) );
} else if ( IsEqualGUID ( ASF_Header_Extension_Object, objectBase.guid ) ) {
this->ReadHeaderExtensionObject ( fileRef, inOutObjectState, pos, objectBase );
} else if (objectBase.size == 0) {
break;
}
pos += objectBase.size;
read += objectBase.size;
}
} catch ( ... ) {
return false;
}
legacyManager->ComputeDigest();
return true;
}
// reads entire structure from file (starting at current position)
void read(XMP_IO* file)
{
this->release();
file->ReadAll ( fields, FIXED_SIZE );
XMP_Validate( SIG == GetUns32LE( &this->fields[CDFileHeader::o_sig] ), "invalid header", kXMPErr_BadFileFormat );
filenameLen = GetUns16LE( &this->fields[CDFileHeader::o_fileNameLength] );
extraFieldLen = GetUns16LE( &this->fields[CDFileHeader::o_extraFieldLength] );
commentLen = GetUns16LE( &this->fields[CDFileHeader::o_commentLength] );
if (filenameLen) {
filename = new char[filenameLen];
file->ReadAll ( filename, filenameLen );
}
if (extraFieldLen) {
extraField = new char[extraFieldLen];
file->ReadAll ( extraField, extraFieldLen );
}
if (commentLen) {
comment = new char[commentLen];
file->ReadAll ( comment, commentLen );
}
////// GET ACTUAL 64 BIT VALUES //////////////////////////////////////////////
// get 32bit goodies first, correct later
sizeUncompressed = GetUns32LE( &fields[o_sizeUncompressed] );
sizeCompressed = GetUns32LE( &fields[o_sizeCompressed] );
offsetLocalHeader = GetUns32LE( &fields[o_offsetLocalHeader] );
XMP_Int32 offset = 0;
while ( offset < extraFieldLen )
{
XMP_Validate( (extraFieldLen - offset) >= 4, "need 4 bytes for next header ID+len", kXMPErr_BadFileFormat);
XMP_Uns16 headerID = GetUns16LE( &extraField[offset] );
XMP_Uns16 dataSize = GetUns16LE( &extraField[offset+2] );
offset += 4;
XMP_Validate( (extraFieldLen - offset) <= dataSize,
"actual field lenght not given", kXMPErr_BadFileFormat);
if ( headerID == 0x1 ) //we only care about "Zip64 extended information extra field"
{
XMP_Validate( offset < extraFieldLen, "extra field too short", kXMPErr_BadFileFormat);
if (sizeUncompressed == 0xffffffff)
{
sizeUncompressed = GetUns64LE( &extraField[offset] );
offset += 8;
}
if (sizeCompressed == 0xffffffff)
{
sizeCompressed = GetUns64LE( &extraField[offset] );
offset += 8;
}
if (offsetLocalHeader == 0xffffffff)
{
offsetLocalHeader = GetUns64LE( &extraField[offset] );
offset += 8;
}
}
else
{
offset += dataSize;
} // if
} // while
} // read()
