// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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//
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// Copyright (C) 2019 Intel Corporation
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//
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#ifndef OPENCV_GAPI_GPLAIDMLKERNEL_HPP
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#define OPENCV_GAPI_GPLAIDMLKERNEL_HPP
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#include <opencv2/gapi/gkernel.hpp>
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#include <opencv2/gapi/garg.hpp>
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namespace plaidml
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{
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namespace edsl
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{
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class Tensor;
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} // namespace edsl
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} // namespace plaidml
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namespace cv
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{
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namespace gapi
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{
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namespace plaidml
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{
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GAPI_EXPORTS cv::gapi::GBackend backend();
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} // namespace plaidml
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} // namespace gapi
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struct GPlaidMLContext
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{
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// Generic accessor API
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template<typename T>
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const T& inArg(int input) { return m_args.at(input).get<T>(); }
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// Syntax sugar
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const plaidml::edsl::Tensor& inTensor(int input)
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{
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return inArg<plaidml::edsl::Tensor>(input);
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}
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plaidml::edsl::Tensor& outTensor(int output)
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{
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return *(m_results.at(output).get<plaidml::edsl::Tensor*>());
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}
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std::vector<GArg> m_args;
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std::unordered_map<std::size_t, GArg> m_results;
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};
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class GAPI_EXPORTS GPlaidMLKernel
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{
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public:
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using F = std::function<void(GPlaidMLContext &)>;
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GPlaidMLKernel() = default;
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explicit GPlaidMLKernel(const F& f) : m_f(f) {};
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void apply(GPlaidMLContext &ctx) const
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{
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GAPI_Assert(m_f);
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m_f(ctx);
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}
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protected:
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F m_f;
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};
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namespace detail
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{
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template<class T> struct plaidml_get_in;
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template<> struct plaidml_get_in<cv::GMat>
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{
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static const plaidml::edsl::Tensor& get(GPlaidMLContext& ctx, int idx)
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{
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return ctx.inTensor(idx);
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}
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};
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template<class T> struct plaidml_get_in
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{
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static T get(GPlaidMLContext &ctx, int idx) { return ctx.inArg<T>(idx); }
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};
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template<class T> struct plaidml_get_out;
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template<> struct plaidml_get_out<cv::GMat>
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{
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static plaidml::edsl::Tensor& get(GPlaidMLContext& ctx, int idx)
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{
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return ctx.outTensor(idx);
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}
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};
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template<typename, typename, typename>
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struct PlaidMLCallHelper;
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template<typename Impl, typename... Ins, typename... Outs>
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struct PlaidMLCallHelper<Impl, std::tuple<Ins...>, std::tuple<Outs...> >
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{
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template<int... IIs, int... OIs>
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static void call_impl(GPlaidMLContext &ctx, detail::Seq<IIs...>, detail::Seq<OIs...>)
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{
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Impl::run(plaidml_get_in<Ins>::get(ctx, IIs)..., plaidml_get_out<Outs>::get(ctx, OIs)...);
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}
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static void call(GPlaidMLContext& ctx)
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{
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call_impl(ctx,
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typename detail::MkSeq<sizeof...(Ins)>::type(),
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typename detail::MkSeq<sizeof...(Outs)>::type());
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}
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};
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} // namespace detail
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template<class Impl, class K>
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class GPlaidMLKernelImpl: public cv::detail::PlaidMLCallHelper<Impl, typename K::InArgs, typename K::OutArgs>,
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public cv::detail::KernelTag
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{
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using P = detail::PlaidMLCallHelper<Impl, typename K::InArgs, typename K::OutArgs>;
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public:
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using API = K;
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static cv::gapi::GBackend backend() { return cv::gapi::plaidml::backend(); }
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static cv::GPlaidMLKernel kernel() { return GPlaidMLKernel(&P::call); }
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};
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#define GAPI_PLAIDML_KERNEL(Name, API) struct Name: public cv::GPlaidMLKernelImpl<Name, API>
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} // namespace cv
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#endif // OPENCV_GAPI_GPLAIDMLKERNEL_HPP
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