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+//---------------------------------------------------------------------------//
+// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
+//
+// Distributed under the Boost Software License, Version 1.0
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+// See http://boostorg.github.com/compute for more information.
+//---------------------------------------------------------------------------//
+
+#ifndef BOOST_COMPUTE_INTEROP_OPENCV_CORE_HPP
+#define BOOST_COMPUTE_INTEROP_OPENCV_CORE_HPP
+
+#include <opencv2/core/core.hpp>
+
+#include <boost/throw_exception.hpp>
+
+#include <boost/compute/algorithm/copy_n.hpp>
+#include <boost/compute/exception/opencl_error.hpp>
+#include <boost/compute/image/image2d.hpp>
+#include <boost/compute/image/image_format.hpp>
+#include <boost/compute/iterator/buffer_iterator.hpp>
+
+namespace boost {
+namespace compute {
+
+template<class T>
+inline void opencv_copy_mat_to_buffer(const cv::Mat &mat,
+ buffer_iterator<T> buffer,
+ command_queue &queue = system::default_queue())
+{
+ BOOST_ASSERT(mat.isContinuous());
+
+ ::boost::compute::copy_n(
+ reinterpret_cast<T *>(mat.data), mat.rows * mat.cols, buffer, queue
+ );
+}
+
+template<class T>
+inline void opencv_copy_buffer_to_mat(const buffer_iterator<T> buffer,
+ cv::Mat &mat,
+ command_queue &queue = system::default_queue())
+{
+ BOOST_ASSERT(mat.isContinuous());
+
+ ::boost::compute::copy_n(
+ buffer, mat.cols * mat.rows, reinterpret_cast<T *>(mat.data), queue
+ );
+}
+
+inline void opencv_copy_mat_to_image(const cv::Mat &mat,
+ image2d &image,
+ command_queue &queue = system::default_queue())
+{
+ BOOST_ASSERT(mat.data != 0);
+ BOOST_ASSERT(mat.isContinuous());
+ BOOST_ASSERT(image.get_context() == queue.get_context());
+
+ queue.enqueue_write_image(image, image.origin(), image.size(), mat.data);
+}
+
+inline void opencv_copy_image_to_mat(const image2d &image,
+ cv::Mat &mat,
+ command_queue &queue = system::default_queue())
+{
+ BOOST_ASSERT(mat.isContinuous());
+ BOOST_ASSERT(image.get_context() == queue.get_context());
+
+ queue.enqueue_read_image(image, image.origin(), image.size(), mat.data);
+}
+
+inline image_format opencv_get_mat_image_format(const cv::Mat &mat)
+{
+ switch(mat.type()){
+ case CV_8UC4:
+ return image_format(CL_BGRA, CL_UNORM_INT8);
+ case CV_16UC4:
+ return image_format(CL_BGRA, CL_UNORM_INT16);
+ case CV_32F:
+ return image_format(CL_INTENSITY, CL_FLOAT);
+ case CV_32FC4:
+ return image_format(CL_RGBA, CL_FLOAT);
+ case CV_8UC1:
+ return image_format(CL_INTENSITY, CL_UNORM_INT8);
+ }
+
+ BOOST_THROW_EXCEPTION(opencl_error(CL_IMAGE_FORMAT_NOT_SUPPORTED));
+}
+
+inline cv::Mat opencv_create_mat_with_image2d(const image2d &image,
+ command_queue &queue = system::default_queue())
+{
+ BOOST_ASSERT(image.get_context() == queue.get_context());
+
+ cv::Mat mat;
+ image_format format = image.get_format();
+ const cl_image_format *cl_image_format = format.get_format_ptr();
+
+ if(cl_image_format->image_channel_data_type == CL_UNORM_INT8 &&
+ cl_image_format->image_channel_order == CL_BGRA)
+ {
+ mat = cv::Mat(image.height(), image.width(), CV_8UC4);
+ }
+ else if(cl_image_format->image_channel_data_type == CL_UNORM_INT16 &&
+ cl_image_format->image_channel_order == CL_BGRA)
+ {
+ mat = cv::Mat(image.height(), image.width(), CV_16UC4);
+ }
+ else if(cl_image_format->image_channel_data_type == CL_FLOAT &&
+ cl_image_format->image_channel_order == CL_INTENSITY)
+ {
+ mat = cv::Mat(image.height(), image.width(), CV_32FC1);
+ }
+ else
+ {
+ mat = cv::Mat(image.height(), image.width(), CV_8UC1);
+ }
+
+ opencv_copy_image_to_mat(image, mat, queue);
+
+ return mat;
+}
+
+inline image2d opencv_create_image2d_with_mat(const cv::Mat &mat,
+ cl_mem_flags flags,
+ command_queue &queue = system::default_queue())
+{
+ const context &context = queue.get_context();
+ const image_format format = opencv_get_mat_image_format(mat);
+
+ image2d image(context, mat.cols, mat.rows, format, flags);
+
+ opencv_copy_mat_to_image(mat, image, queue);
+
+ return image;
+}
+
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_INTEROP_OPENCV_CORE_HPP