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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.
// =================================================================================================
#ifndef _IChunkData_h_
#define _IChunkData_h_
#include "public/include/XMP_Environment.h" // ! This must be the first include.
#include "public/include/XMP_Const.h"
#include "source/Endian.h"
#include "XMPFiles/source/FormatSupport/IFF/ChunkPath.h"
#include <string>
namespace IFF_RIFF
{
/**
* This interface allow access to only the data part of a chunk.
*/
class IChunkData
{
public:
virtual ~IChunkData() {};
/**
* Get the chunk ID
*
* @return Return the ID, 0 if the chunk does not have an ID.
*/
virtual XMP_Uns32 getID() const = 0;
/**
* Get the chunk type (if available)
* (the first four data bytes of the chunk could be a chunk type)
*
* @return Return the type, kType_NONE if the chunk does not contain data.
*/
virtual XMP_Uns32 getType() const = 0;
/**
* Get the chunk identifier [id and type]
*
* @return Return the identifier
*/
virtual const ChunkIdentifier& getIdentifier() const = 0;
/**
* Access the data of the chunk.
*
* @param data OUT pointer to the byte array
* @return size of the data block, 0 if no data is available
*/
virtual XMP_Uns64 getData( const XMP_Uns8** data ) const = 0;
/**
* Set new data for the chunk.
* Will delete an existing internal buffer and recreate a new one
* and copy the given data into that new buffer.
*
* @param data pointer to the data to put into the chunk
* @param size Size of the data block
*/
virtual void setData( const XMP_Uns8* const data, XMP_Uns64 size, XMP_Bool writeType = false ) = 0;
/**
* Returns the current size of the Chunk without pad byte.
*
* @param includeHeader if set, the returned size will be the whole chunk size including the header
* @return either size of the data block of the chunk or size of the whole chunk
*/
virtual XMP_Uns64 getSize( bool includeHeader = false ) const = 0;
/* The following methods are getter/setter for certain data types.
They always take care of little-endian/big-endian issues.
The offset starts at the data area of the Chunk. */
virtual XMP_Uns32 getUns32( XMP_Uns64 offset=0 ) const = 0;
virtual void setUns32( XMP_Uns32 value, XMP_Uns64 offset=0 ) = 0;
virtual XMP_Uns64 getUns64( XMP_Uns64 offset=0 ) const = 0;
virtual void setUns64( XMP_Uns64 value, XMP_Uns64 offset=0 ) = 0;
virtual XMP_Int32 getInt32( XMP_Uns64 offset=0 ) const = 0;
virtual void setInt32( XMP_Int32 value, XMP_Uns64 offset=0 ) = 0;
virtual XMP_Int64 getInt64( XMP_Uns64 offset=0 ) const = 0;
virtual void setInt64( XMP_Int64 value, XMP_Uns64 offset=0 ) = 0;
virtual std::string getString( XMP_Uns64 size = 0, XMP_Uns64 offset=0 ) const = 0;
virtual void setString( std::string value, XMP_Uns64 offset=0 ) = 0;
/**
* Creates a string representation of the chunk and its children.
*/
virtual std::string toString( std::string tabs = std::string() , XMP_Bool showOriginal = false ) = 0;
}; // IChunkData
} // namespace
#endif
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