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diff --git a/source/XMPFiles/FileHandlers/MPEG4_Handler.hpp b/source/XMPFiles/FileHandlers/MPEG4_Handler.hpp
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+#ifndef __MPEG4_Handler_hpp__
+#define __MPEG4_Handler_hpp__ 1
+
+// =================================================================================================
+// ADOBE SYSTEMS INCORPORATED
+// Copyright 2002-2007 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 "XMPFiles_Impl.hpp"
+
+// ================================================================================================
+/// \file MPEG4_Handler.hpp
+/// \brief File format handler for MPEG-4.
+///
+/// This header ...
+///
+// ================================================================================================
+
+extern XMPFileHandler * MPEG4_MetaHandlerCTor ( XMPFiles * parent );
+
+extern bool MPEG4_CheckFormat ( XMP_FileFormat format,
+ XMP_StringPtr filePath,
+ LFA_FileRef fileRef,
+ XMPFiles * parent );
+
+static const XMP_OptionBits kMPEG4_HandlerFlags = ( kXMPFiles_CanInjectXMP |
+ kXMPFiles_CanExpand |
+ kXMPFiles_CanRewrite |
+ kXMPFiles_PrefersInPlace |
+ kXMPFiles_CanReconcile |
+ kXMPFiles_AllowsOnlyXMP |
+ kXMPFiles_ReturnsRawPacket |
+ kXMPFiles_AllowsSafeUpdate
+ );
+
+class MPEG4_MetaHandler : public XMPFileHandler
+{
+public:
+
+ void CacheFileData();
+ void ProcessXMP();
+
+ void UpdateFile ( bool doSafeUpdate );
+ void WriteFile ( LFA_FileRef sourceRef, const std::string & sourcePath );
+
+ MPEG4_MetaHandler ( XMPFiles * _parent );
+ virtual ~MPEG4_MetaHandler();
+
+private:
+
+ MPEG4_MetaHandler() : xmpBoxPos(0) {}; // Hidden on purpose.
+
+ void MakeLegacyDigest ( std::string * digestStr );
+ void PickNewLocation();
+
+ XMP_Uns64 xmpBoxPos; // The file offset of the XMP box (the size field, not the content).
+
+ std::string mvhdBox; // ! Both contain binary data, but std::string is handy.
+ std::vector<std::string> cprtBoxes;
+
+}; // MPEG4_MetaHandler
+
+// =================================================================================================
+
+#endif // __MPEG4_Handler_hpp__