text: /*
   * Copyright (c) 2017, Intel Corporation
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #pragma once
  #include "runtime/sharings/sharing.h"
  #include "runtime/sharings/va/va_sharing_defines.h"
  #include <functional>
  
  namespace OCLRT {
  class VASharingFunctions : public SharingFunctions {
    public:
      VASharingFunctions(VADisplay vaDisplay);
      ~VASharingFunctions();
  
      uint32_t getId() const override {
          return VASharingFunctions::sharingId;
      }
      static const uint32_t sharingId;
  
      bool isValidVaDisplay() {
          return vaDisplayIsValidPFN(vaDisplay) == 1;
      }
  
      VAStatus deriveImage(VASurfaceID vaSurface, VAImage *vaImage) {
          return vaDeriveImagePFN(vaDisplay, vaSurface, vaImage);
      }
  
      VAStatus destroyImage(VAImageID vaImageId) {
          return vaDestroyImagePFN(vaDisplay, vaImageId);
      }
  
      VAStatus extGetSurfaceHandle(VASurfaceID *vaSurface, unsigned int *handleId) {
          return vaExtGetSurfaceHandlePFN(vaDisplay, vaSurface, handleId);
      }
  
      VAStatus syncSurface(VASurfaceID vaSurface) {
          return vaSyncSurfacePFN(vaDisplay, vaSurface);
      }
  
      VAPrivFunc getLibFunc(const char *func) {
          if (vaGetLibFuncPFN) {
              return vaGetLibFuncPFN(vaDisplay, func);
          }
          return nullptr;
      }
  
      void initFunctions();
      static std::function<void *(const char *, int)> fdlopen;
      static std::function<void *(void *handle, const char *symbol)> fdlsym;
      static std::function<int(void *handle)> fdlclose;
  
      static bool isVaLibraryAvailable();
  
    protected:
      void *libHandle = nullptr;
      VADisplay vaDisplay = nullptr;
      VADisplayIsValidPFN vaDisplayIsValidPFN = [](VADisplay vaDisplay) { return 0; };
      VADeriveImagePFN vaDeriveImagePFN;
      VADestroyImagePFN vaDestroyImagePFN;
      VASyncSurfacePFN vaSyncSurfacePFN;
      VAExtGetSurfaceHandlePFN vaExtGetSurfaceHandlePFN;
      VAGetLibFuncPFN vaGetLibFuncPFN;
  };
  }
  