DtTrackedCamera.h

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/******************************************************************************
** Copyright (c) 2019 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
#pragma once


#include "vrvVirtualReality/vrvVirtualReality.h"

#include <osg/ref_ptr>
#include <osg/Texture2D>
#include <osg/Image>
#include <osg/Matrix>

namespace makVrv
{
   class DtDe;

   class DT_DLL_VRVVR DtTrackedCamera
   {
   public:
      enum Eye {Mono = 0, Left = 0, Right};
      
      DtTrackedCamera(DtDe& de);

      virtual ~DtTrackedCamera();

      virtual osg::ref_ptr<osg::Texture2D> texture(Eye id);
      
      virtual osg::Matrixd pose(Eye e);

      virtual osg::Matrixd projection();

      virtual bool startStream() = 0;

      virtual void stopStream() = 0;

      virtual void toggleStreaming();

      virtual void tick() = 0;

      virtual bool isDualCamera() { return myIsDualCamera; }

      virtual void setCameraFov(float x, float y);

      virtual void setCameraEye(float x, float y, float z, float pitch);

      virtual void resetCameraProjection() = 0;

   protected:
      virtual void addEyeTexture(int width, int height, unsigned char* buffer);

      virtual void invertBuffer();

      virtual osg::Matrixd createProjectionMatrix(float zn, float zf, const float* fovx = NULL, const float* fovy = NULL) = 0;

      typedef unsigned long long UInt64;
      
      DtDe& myDe;
      bool myIsStreaming;
      UInt64 myLastFrameSequence;
      unsigned int myFrameWidth;
      unsigned int myFrameHeight;
      unsigned int myFrameBufferSize;
      
      unsigned char* myFrameBuffer;
      unsigned char* myFrameFlipBuffer;

      bool myIsDualCamera;
      int myDualFormat;

      std::vector<osg::ref_ptr<osg::Texture2D>> myTextures;
      std::vector<osg::ref_ptr<osg::Image>> myImages;
      
      osg::Matrixd myProjection;
      osg::Matrixd myView;
      std::vector<osg::Matrixd> myHeadToCameraMatrix;

      int myFrameType;
   };
}