OData.h

//-*****************************************************************************
//
// Copyright (c) 2013,
//  Sony Pictures Imageworks Inc. and
//  Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
//
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are
// met:
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// notice, this list of conditions and the following disclaimer.
// *       Redistributions in binary form must reproduce the above
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#ifndef Alembic_Ogawa_OData_h
#define Alembic_Ogawa_OData_h
 
#include <Alembic/Util/Export.h>
#include <Alembic/Ogawa/Foundation.h>
#include <Alembic/Ogawa/OStream.h>
 
namespace Alembic {
namespace Ogawa {
namespace ALEMBIC_VERSION_NS {
 
class ALEMBIC_EXPORT OData
{
public:
 
    // creates a default empty group
    OData();
 
    ~OData();
 
    // rewrites over part of the already written data, does not change
    // the size of the already written data.  If what is attempting
    // to be rewritten exceeds the boundaries of what is already written,
    // the existing data will be unchanged
    void rewrite(Alembic::Util::uint64_t iSize, void * iData,
                 Alembic::Util::uint64_t iOffset=0);
 
    Alembic::Util::uint64_t getSize() const;
 
private:
    friend class OGroup; // friend so we can call the constructor below
    OData(OStreamPtr iStream, Alembic::Util::uint64_t iPos,
          Alembic::Util::uint64_t iSize);
 
    Alembic::Util::uint64_t getPos() const;
 
    class PrivateData;
    Alembic::Util::unique_ptr< PrivateData > mData;
};
 
typedef Alembic::Util::shared_ptr< OData > ODataPtr;
 
} // End namespace ALEMBIC_VERSION_NS
 
using namespace ALEMBIC_VERSION_NS;
 
} // End namespace Ogawa
 
} // End namespace Alembic
 
#endif