diff options
Diffstat (limited to 'XMPFiles/source/FormatSupport/WAVE/DISPMetadata.cpp')
| -rw-r--r-- | XMPFiles/source/FormatSupport/WAVE/DISPMetadata.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/XMPFiles/source/FormatSupport/WAVE/DISPMetadata.cpp b/XMPFiles/source/FormatSupport/WAVE/DISPMetadata.cpp new file mode 100644 index 0000000..9e821ef --- /dev/null +++ b/XMPFiles/source/FormatSupport/WAVE/DISPMetadata.cpp @@ -0,0 +1,138 @@ +// ================================================================================================= +// ADOBE SYSTEMS INCORPORATED +// Copyright 2010 Adobe Systems Incorporated +// 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/DISPMetadata.h" +#include "source/Endian.h" + +using namespace IFF_RIFF; + +//----------------------------------------------------------------------------- +// +// DISPMetadata::isValidDISP(...) +// +// Purpose: [static] Check if the passed data is a valid DISP chunk. Valid in +// of is it a DISP chunk that XMP should process. +// +//----------------------------------------------------------------------------- + +bool DISPMetadata::isValidDISP( const XMP_Uns8* chunkData, XMP_Uns64 size ) +{ + return ( ( size >= 4 ) && ( LittleEndian::getInstance().getUns32( chunkData ) == 0x0001 ) ); +} + +//----------------------------------------------------------------------------- +// +// DISPMetadata::DISPMetadata(...) +// +// Purpose: ctor/dtor +// +//----------------------------------------------------------------------------- + +DISPMetadata::DISPMetadata() +{ +} + +DISPMetadata::~DISPMetadata() +{ +} + +//----------------------------------------------------------------------------- +// +// DISPMetadata::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 DISP chunk. +// Throws exceptions if parsing is not possible +// +//----------------------------------------------------------------------------- + +void DISPMetadata::parse( const XMP_Uns8* chunkData, XMP_Uns64 size ) +{ + if( DISPMetadata::isValidDISP( chunkData, size ) ) + { + this->setValue<std::string>( kTitle, std::string( (char*)&chunkData[4], static_cast<std::string::size_type>(size-4) ) ); + this->resetChanges(); + } + else + { + XMP_Throw ( "Not a valid DISP chunk", kXMPErr_BadFileFormat ); + } +} + +//----------------------------------------------------------------------------- +// +// DISPMetadata::serialize(...) +// +// Purpose: Serializes the data model to a memory block. +// The memory block will be the data area of a DISP chunk. +// Throws exceptions if serializing is not possible +// +//----------------------------------------------------------------------------- + +XMP_Uns64 DISPMetadata::serialize( XMP_Uns8** outBuffer ) +{ + XMP_Uns64 size = 0; + + if( outBuffer != NULL && this->valueExists( kTitle ) ) + { + std::string title = this->getValue<std::string>( kTitle ); + + size = 4 + title.length(); // at least 4bytes for the type value of the DISP chunk + + // [2500563] DISP chunk must be of even length for WAVE, + // as pad byte is not interpreted correctly by third-party tools + if ( size % 2 != 0 ) + { + size++; + } + XMP_Uns8* buffer = new XMP_Uns8[static_cast<size_t>(size)]; + + memset( buffer, 0, static_cast<size_t>(size) ); + + // + // DISP type + // + buffer[0] = 1; + + // + // copy string into buffer + // + + memcpy( &buffer[4], title.c_str(), title.length() ); + + *outBuffer = buffer; + } + else + { + XMP_Throw ( "Invalid buffer", kXMPErr_InternalFailure ); + } + + return size; +} + +//----------------------------------------------------------------------------- +// +// DISPMetadata::isEmptyValue(...) +// +// Purpose: Is the value of the passed ValueObject and its id "empty"? +// +//----------------------------------------------------------------------------- + +bool DISPMetadata::isEmptyValue( XMP_Uns32 id, ValueObject& valueObj ) +{ + TValueObject<std::string>* strObj = dynamic_cast<TValueObject<std::string>*>(&valueObj); + + return ( strObj == NULL || ( strObj != NULL && strObj->getValue().empty() ) ); +} |