struct IMetadata {
};

IMetadataRecorder.h

virtual ~IMetadata();

virtual bool AddField(const IMetadata* metadata) = 0;

virtual bool AddField(uint32 tag, uint32 type, const uint8* data, uint8 size) = 0;

virtual IMetadata* Clone() const = 0;

static IMetadata* CreateInstance();

void Delete();

virtual const IMetadata* GetFieldByIndex(size_t i) const = 0;

virtual size_t GetNumFields() const = 0;

0 means this is a basic typed value

virtual uint32 GetTag() const = 0;

virtual bool GetValue(uint8* data, uint8* size) const = 0;

virtual uint8 GetValueSize() const = 0;

virtual uint32 GetValueType() const = 0;

virtual void Reset() = 0;

virtual void SetTag(uint32 tag) = 0;

virtual bool SetValue(uint32 type, const uint8* data, uint8 size) = 0;