GPUtextureDmaBuf.H

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// ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// JeVois Smart Embedded Machine Vision Toolkit - Copyright (C) 2016 by Laurent Itti, the University of Southern
// California (USC), and iLab at USC. See http://iLab.usc.edu and http://jevois.org for information about this project.
//
// This file is part of the JeVois Smart Embedded Machine Vision Toolkit.  This program is free software; you can
// redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software
// Foundation, version 2.  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
// License for more details.  You should have received a copy of the GNU General Public License along with this program;
// if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// Contact information: Laurent Itti - 3641 Watt Way, HNB-07A - Los Angeles, CA 90089-2520 - USA.
// Tel: +1 213 740 3527 - itti@pollux.usc.edu - http://iLab.usc.edu - http://jevois.org
// ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/*! \file */
 
#pragma once
 
#ifdef JEVOIS_PLATFORM_PRO
 
#include <jevois/GPU/OpenGL.H>
 
namespace jevois
{
  //! Simple class to hold an OpenGL texture with in-GPU pixel format conversion and DMABUF acceleration
  /*! OpenGL textures are used to transfer image data from CPU to GPU and then allow the GPU to perform some processing
      on the data. Processing is typically done by using "shader" GPU programs that transform the texture's pixel data
      and render it, in some user-programmable way. */
  class GPUtextureDmaBuf
  {
    public:
      //! Constructor
      /*! format should be as in glTexImage2D(), typically only GL_RGBA or GL_LUMINANCE are supported on embedded
          hardware platforms. */
      GPUtextureDmaBuf(EGLDisplay display, GLsizei width, GLsizei height, unsigned int fmt, int dmafd);
      
      //! Destructor, frees the texture in OpenGL
      ~GPUtextureDmaBuf();
 
      GLsizei const Width;
      GLsizei const Height;
      GLuint Id;
      EGLImageKHR Image = nullptr;
      EGLDisplay Display;
  };
} // namespace jevois
 
#endif // JEVOIS_PLATFORM_PRO