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// =================================================================================================
// Copyright Adobe
// Copyright 2010 Adobe
// All Rights Reserved
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms
// of the Adobe license agreement accompanying it.
// =================================================================================================
#include <string.h>
#include "public/include/XMP_Environment.h" // ! XMP_Environment.h must be the first included header.
#include "public/include/XMP_Const.h"
#include "XMPFiles/source/FormatSupport/WAVE/PrmLMetadata.h"
#include "source/Endian.h"
using namespace IFF_RIFF;
static const XMP_Uns32 kPrmlSizeFix = 282; // always 282 bytes
static const XMP_Uns32 kSizeFilePath = 260;
// Needed to be able to memcpy directly to this struct.
#if SUNOS_SPARC || SUNOS_X86
#pragma pack ( 1 )
#else
#pragma pack ( push, 1 )
#endif //#if SUNOS_SPARC || SUNOS_X86
struct PrmlBoxContent
{
XMP_Uns32 mMagic;
XMP_Uns32 mSize;
XMP_Uns16 mVerAPI;
XMP_Uns16 mVerCode;
XMP_Uns32 mExportType;
XMP_Uns16 mMacVRefNum;
XMP_Uns32 mMacParID;
char mFilePath[kSizeFilePath];
};
#if SUNOS_SPARC || SUNOS_X86
#pragma pack ( )
#else
#pragma pack ( pop )
#endif //#if SUNOS_SPARC || SUNOS_X86
//-----------------------------------------------------------------------------
//
// PrmLMetadata::PrmLMetadata(...)
//
// Purpose: ctor/dtor
//
//-----------------------------------------------------------------------------
PrmLMetadata::PrmLMetadata()
{
}
PrmLMetadata::~PrmLMetadata()
{
}
//-----------------------------------------------------------------------------
//
// PrmLMetadata::parse(...)
//
// Purpose: Parses the given memory block and creates a data model representation
// The implementation expects that the memory block is the data area of
// the BEXT chunk and its size is at least as big as the minimum size
// of a BEXT data block.
// Throws exceptions if parsing is not possible
//
//-----------------------------------------------------------------------------
void PrmLMetadata::parse( const XMP_Uns8* chunkData, XMP_Uns64 size )
{
if( size >= kPrmlSizeFix )
{
PrmlBoxContent prml;
memset( &prml, 0, kPrmlSizeFix );
//
// copy input data into Prml block
// Safe as fixed size matches size of struct that is #pragma packed(1)
//
memcpy( &prml, chunkData, kPrmlSizeFix );
//
// copy values to map
//
this->setValue<XMP_Uns32>( kMagic, prml.mMagic );
this->setValue<XMP_Uns32>( kSize, prml.mSize );
this->setValue<XMP_Uns16>( kVerAPI, prml.mVerAPI );
this->setValue<XMP_Uns16>( kVerCode, prml.mVerCode );
this->setValue<XMP_Uns32>( kExportType, prml.mExportType );
this->setValue<XMP_Uns16>( kMacVRefNum, prml.mMacVRefNum );
this->setValue<XMP_Uns32>( kMacParID, prml.mMacParID );
this->setValue<std::string>( kFilePath, std::string( prml.mFilePath, kSizeFilePath ) );
this->resetChanges();
}
else
{
XMP_Throw ( "Not a valid Prml chunk", kXMPErr_BadFileFormat );
}
}
//-----------------------------------------------------------------------------
//
// PrmLMetadata::serialize(...)
//
// Purpose: Serializes the data model to a memory block.
// The memory block will be the data area of a BEXT chunk.
// Throws exceptions if serializing is not possible
//
//-----------------------------------------------------------------------------
XMP_Uns64 PrmLMetadata::serialize( XMP_Uns8** outBuffer )
{
XMP_Uns64 size = 0;
if( outBuffer != NULL )
{
const LittleEndian& LE = LittleEndian::getInstance();
size = kPrmlSizeFix;
//
// setup buffer
//
XMP_Uns8* buffer = new XMP_Uns8[static_cast<size_t>(size)];
//
// copy values and strings back to BEXT block
//
// ! Safe use of strncpy as the fixed size is consistent with the size of the destination buffer
// But it is intentional here that the string might not be null terminated if
// the size of the source is equal to the fixed size of the destination
//
PrmlBoxContent prml;
memset( &prml, 0, kPrmlSizeFix );
if( this->valueExists( kMagic ) )
{
LE.putUns32( this->getValue<XMP_Uns32>( kMagic ), &prml.mMagic );
}
if( this->valueExists( kSize ) )
{
LE.putUns32( this->getValue<XMP_Uns32>( kSize ), &prml.mSize );
}
if( this->valueExists( kVerAPI ) )
{
LE.putUns16( this->getValue<XMP_Uns16>( kVerAPI ), &prml.mVerAPI );
}
if( this->valueExists( kVerCode ) )
{
LE.putUns16( this->getValue<XMP_Uns16>( kVerCode ), &prml.mVerCode );
}
if( this->valueExists( kExportType ) )
{
LE.putUns32( this->getValue<XMP_Uns32>( kExportType ), &prml.mExportType );
}
if( this->valueExists( kMacVRefNum ) )
{
LE.putUns16( this->getValue<XMP_Uns16>( kMacVRefNum ), &prml.mMacVRefNum );
}
if( this->valueExists( kMacParID ) )
{
LE.putUns32( this->getValue<XMP_Uns32>( kMacParID ), &prml.mMacParID );
}
if( this->valueExists( kFilePath ) )
{
strncpy( prml.mFilePath, this->getValue<std::string>( kFilePath ).c_str(), kSizeFilePath );
}
//
// set input buffer to zero
//
memset( buffer, 0, static_cast<size_t>(size) );
//
// copy Prml block into buffer
//
memcpy( buffer, &prml, kPrmlSizeFix );
*outBuffer = buffer;
}
else
{
XMP_Throw ( "Invalid buffer", kXMPErr_BadParam );
}
return size;
}
//-----------------------------------------------------------------------------
//
// PrmLMetadata::isEmptyValue(...)
//
// Purpose: Is the value of the passed ValueObject and its id "empty"?
//
//-----------------------------------------------------------------------------
bool PrmLMetadata::isEmptyValue( XMP_Uns32 id, ValueObject& valueObj )
{
bool ret = true;
switch( id )
{
case kFilePath:
{
TValueObject<std::string>* strObj = dynamic_cast<TValueObject<std::string>*>(&valueObj);
ret = ( strObj == NULL || ( strObj != NULL && strObj->getValue().empty() ) );
}
break;
case kMagic:
case kSize:
case kVerAPI:
case kVerCode:
case kExportType:
case kMacVRefNum:
case kMacParID:
{
ret = false;
}
break;
default:
{
ret = true;
}
}
return ret;
}
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