void ASF_MetaHandler::CacheFileData()
{
this->containsXMP = false;
XMP_IO* fileRef ( this->parent->ioRef );
if ( fileRef == 0 ) return;
ASF_Support support ( &this->legacyManager,0 );
ASF_Support::ObjectState objectState;
long numTags = support.OpenASF ( fileRef, objectState );
if ( numTags == 0 ) return;
if ( objectState.xmpLen != 0 ) {
// XMP present
XMP_Int32 len = XMP_Int32 ( objectState.xmpLen );
this->xmpPacket.reserve( len );
this->xmpPacket.assign ( len, ' ' );
bool found = ASF_Support::ReadBuffer ( fileRef, objectState.xmpPos, objectState.xmpLen,
const_cast<char *>(this->xmpPacket.data()) );
if ( found ) {
this->packetInfo.offset = objectState.xmpPos;
this->packetInfo.length = len;
this->containsXMP = true;
}
}
} // ASF_MetaHandler::CacheFileData
bool ASF_Support::ReadBuffer ( XMP_IO* fileRef, XMP_Uns64 & pos, XMP_Uns64 len, char * outBuffer )
{
try {
if ( (fileRef == 0) || (outBuffer == 0) ) return false;
fileRef->Seek ( pos, kXMP_SeekFromStart );
long bytesRead = fileRef->ReadAll ( outBuffer, XMP_Int32(len) );
if ( XMP_Uns32 ( bytesRead ) != len ) return false;
return true;
} catch ( ... ) {}
return false;
}
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;
}
