modules/dnn/src/cuda4dnn/primitives/split.hpp

   1 // This file is part of OpenCV project.
   2 // It is subject to the license terms in the LICENSE file found in the top-level directory
   3 // of this distribution and at http://opencv.org/license.html.
   4
   5 #ifndef OPENCV_DNN_SRC_CUDA4DNN_PRIMITIVES_SPLIT_HPP
   6 #define OPENCV_DNN_SRC_CUDA4DNN_PRIMITIVES_SPLIT_HPP
   7
   8 #include "../../op_cuda.hpp"
   9
  10 #include "../csl/stream.hpp"
  11 #include "../csl/tensor_ops.hpp"
  12
  13 #include <opencv2/core.hpp>
  14
  15 #include <utility>
  16
  17 namespace cv { namespace dnn { namespace cuda4dnn {
  18
  19     template <class T>
  20     class SplitOp final : public CUDABackendNode {
  21     public:
  22         using wrapper_type = GetCUDABackendWrapperType<T>;
  23
  24         SplitOp(csl::Stream stream_)
  25             : stream(std::move(stream_))
  26         {
  27         }
  28
  29         void forward(
  30             const std::vector<cv::Ptr<BackendWrapper>>& inputs,
  31             const std::vector<cv::Ptr<BackendWrapper>>& outputs,
  32             csl::Workspace& workspace) override
  33         {
  34             CV_Assert(inputs.size() == 1);
  35
  36             auto input_wrapper = inputs[0].dynamicCast<wrapper_type>();
  37             auto input = input_wrapper->getView();
  38
  39             for (int i = 0; i < outputs.size(); i++)
  40             {
  41                 auto output_wrapper = outputs[i].dynamicCast<wrapper_type>();
  42                 auto output = output_wrapper->getSpan();
  43
  44                 csl::tensor_ops::copy<T>(stream, output, input);
  45             }
  46         }
  47
  48     private:
  49         csl::Stream stream;
  50     };
  51
  52 }}} /* namespace cv::dnn::cuda4dnn */
  53
  54 #endif /* OPENCV_DNN_SRC_CUDA4DNN_PRIMITIVES_SPLIT_HPP */