include/opencascade/Media_BufferPool.hxx

0001 // Created by: Kirill GAVRILOV
0002 // Copyright (c) 2019 OPEN CASCADE SAS
0003 //
0004 // This file is part of Open CASCADE Technology software library.
0005 //
0006 // This library is free software; you can redistribute it and/or modify it under
0007 // the terms of the GNU Lesser General Public License version 2.1 as published
0008 // by the Free Software Foundation, with special exception defined in the file
0009 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0010 // distribution for complete text of the license and disclaimer of any warranty.
0011 //
0012 // Alternatively, this file may be used under the terms of Open CASCADE
0013 // commercial license or contractual agreement.
0014
0015 #ifndef _Media_BufferPool_HeaderFile
0016 #define _Media_BufferPool_HeaderFile
0017
0018 #include <Standard_Transient.hxx>
0019 #include <Standard_Type.hxx>
0020
0021 struct AVBufferPool;
0022 struct AVBufferRef;
0023
0024 //! AVBufferPool wrapper.
0025 class Media_BufferPool : public Standard_Transient
0026 {
0027   DEFINE_STANDARD_RTTIEXT(Media_BufferPool, Standard_Transient)
0028 public:
0029   //! Empty constructor
0030   Standard_EXPORT Media_BufferPool();
0031
0032   //! Destructor
0033   Standard_EXPORT ~Media_BufferPool();
0034
0035   //! Release the pool (reference-counted buffer will be released when needed).
0036   Standard_EXPORT void Release();
0037
0038   //! (Re-)initialize the pool.
0039   Standard_EXPORT bool Init(int theBufferSize);
0040
0041   //! Return buffer size within the pool.
0042   int BufferSize() const { return myBufferSize; }
0043
0044   //! Get new buffer from the pool.
0045   Standard_EXPORT AVBufferRef* GetBuffer();
0046
0047 private:
0048   // prevent copies
0049   Media_BufferPool(const Media_BufferPool& theCopy);
0050   Media_BufferPool& operator=(const Media_BufferPool& theCopy);
0051
0052 protected:
0053   AVBufferPool* myPool;
0054   int           myBufferSize;
0055 };
0056
0057 #endif // _Media_BufferPool_HeaderFile