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//

// Copyright 2012 Francisco Jerez

//

// 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.

//

#ifndef __CORE_MEMORY_HPP__

#define __CORE_MEMORY_HPP__

#include 

#include 

#include 

#include "core/base.hpp"

#include "core/queue.hpp"

namespace clover {

   typedef struct _cl_mem memory_obj;

   class resource;

   class sub_resource;

}

struct _cl_mem : public clover::ref_counter {

protected:

   _cl_mem(clover::context &ctx, cl_mem_flags flags,

           size_t size, void *host_ptr);

   _cl_mem(const _cl_mem &obj) = delete;

public:

   virtual ~_cl_mem();

   virtual cl_mem_object_type type() const = 0;

   virtual clover::resource &resource(cl_command_queue q) = 0;

   void destroy_notify(std::function f);

   cl_mem_flags flags() const;

   size_t size() const;

   void *host_ptr() const;

   clover::context &ctx;

private:

   cl_mem_flags __flags;

   size_t __size;

   void *__host_ptr;

   std::function __destroy_notify;

protected:

   std::string data;

};

namespace clover {

   struct buffer : public memory_obj {

   protected:

      buffer(clover::context &ctx, cl_mem_flags flags,

             size_t size, void *host_ptr);

   public:

      virtual cl_mem_object_type type() const;

   };

   struct root_buffer : public buffer {

   public:

      root_buffer(clover::context &ctx, cl_mem_flags flags,

                  size_t size, void *host_ptr);

      virtual clover::resource &resource(cl_command_queue q);

   private:

      std::map

               std::unique_ptr> resources;

   };

   struct sub_buffer : public buffer {

   public:

      sub_buffer(clover::root_buffer &parent, cl_mem_flags flags,

                 size_t offset, size_t size);

      virtual clover::resource &resource(cl_command_queue q);

      size_t offset() const;

      clover::root_buffer &parent;

   private:

      size_t __offset;

      std::map

               std::unique_ptr> resources;

   };

   struct image : public memory_obj {

   protected:

      image(clover::context &ctx, cl_mem_flags flags,

            const cl_image_format *format,

            size_t width, size_t height, size_t depth,

            size_t row_pitch, size_t slice_pitch, size_t size,

            void *host_ptr);

   public:

      virtual clover::resource &resource(cl_command_queue q);

      cl_image_format format() const;

      size_t width() const;

      size_t height() const;

      size_t depth() const;

      size_t row_pitch() const;

      size_t slice_pitch() const;

   private:

      cl_image_format __format;

      size_t __width;

      size_t __height;

      size_t __depth;

      size_t __row_pitch;

      size_t __slice_pitch;

      std::map

               std::unique_ptr> resources;

   };

   struct image2d : public image {

   public:

      image2d(clover::context &ctx, cl_mem_flags flags,

              const cl_image_format *format, size_t width,

              size_t height, size_t row_pitch,

              void *host_ptr);

      virtual cl_mem_object_type type() const;

   };

   struct image3d : public image {

   public:

      image3d(clover::context &ctx, cl_mem_flags flags,

              const cl_image_format *format,

              size_t width, size_t height, size_t depth,

              size_t row_pitch, size_t slice_pitch,

              void *host_ptr);

      virtual cl_mem_object_type type() const;

   };

}

#endif