vtkOpenGLMovieSphere.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkOpenGLMovieSphere_h
#define vtkOpenGLMovieSphere_h
 
#include "vtkNew.h" // for ivars
#include "vtkOpenGLSkybox.h"
#include "vtkRenderingFFMPEGOpenGL2Module.h" // For export macro
#include "vtkSmartPointer.h"                 // for ivars
#include <atomic>                            // for ivars
#include <mutex>                             // for ivars
 
VTK_ABI_NAMESPACE_BEGIN
class vtkFFMPEGVideoSource;
struct vtkFFMPEGVideoSourceVideoCallbackData;
class vtkMutexLock;
class vtkOpenGLActor;
class vtkOpenGLPolyDataMapper;
class vtkTextureObject;
 
class VTKRENDERINGFFMPEGOPENGL2_EXPORT vtkOpenGLMovieSphere : public vtkOpenGLSkybox
{
public:
  static vtkOpenGLMovieSphere* New();
  vtkTypeMacro(vtkOpenGLMovieSphere, vtkOpenGLSkybox);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Render(vtkRenderer* ren, vtkMapper* mapper) override;
 
  void SetVideoSource(vtkFFMPEGVideoSource* val);
  vtkFFMPEGVideoSource* GetVideoSource();
 
protected:
  vtkOpenGLMovieSphere();
  ~vtkOpenGLMovieSphere() override;
 
  void UpdateUniforms(vtkObject*, unsigned long, void*);
 
  vtkNew<vtkTextureObject> Textures[6];
  int BuildIndex;
  int DrawIndex;
  int YTexture;
  int UTexture;
  int VTexture;
 
  void VideoCallback(vtkFFMPEGVideoSourceVideoCallbackData const& cbd);
 
  std::mutex TextureUpdateMutex;
  unsigned char* TextureData[6];
  int ReadIndex; // access only within mutex
  int WriteIndex;
 
  std::atomic<int> NewData;
  std::atomic<int> HaveData;
 
  int Height;
  int Width;
  int UVHeight;
  int UVWidth;
  vtkSmartPointer<vtkFFMPEGVideoSource> VideoSource;
 
private:
  vtkOpenGLMovieSphere(const vtkOpenGLMovieSphere&) = delete;
  void operator=(const vtkOpenGLMovieSphere&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif