inference-engine/src/inference_engine/shape_infer/built-in/ie_range_shape_infer.hpp

   1 // Copyright (C) 2019 Intel Corporation
   2 // SPDX-License-Identifier: Apache-2.0
   3 //
   4
   5 #pragma once
   6
   7 #include "ie_built_in_impl.hpp"
   8 #include <map>
   9 #include <memory>
  10 #include <string>
  11 #include <vector>
  12 #include <cmath>
  13
  14 namespace InferenceEngine {
  15 namespace ShapeInfer {
  16
  17 /**
  18  *@brief Implementation of Shape inference for Range layer
  19  */
  20 class RangeShapeProp : public BuiltInShapeInferImpl {
  21 public:
  22     explicit RangeShapeProp(const std::string& type) : BuiltInShapeInferImpl(type) {}
  23
  24     void inferShapesImpl(const std::vector<Blob::CPtr>& inBlobs,
  25                          const std::map<std::string, std::string>& params,
  26                          const std::map<std::string, Blob::Ptr>& blobs,
  27                          std::vector<SizeVector>& outShapes) override {
  28         LayerParams lp{};
  29         RangeLayer rangeLayer(lp);
  30         rangeLayer.params = params;
  31         rangeLayer.type = _type;
  32         validate(&rangeLayer, inBlobs, params, blobs);
  33
  34         const size_t RANGE_START = 0;
  35         const size_t RANGE_LIMIT = 1;
  36         const size_t RANGE_DELTA = 2;
  37
  38         float start = (inBlobs[RANGE_START]->cbuffer().as<float*>() +
  39                        inBlobs[RANGE_START]->getTensorDesc().getBlockingDesc().getOffsetPadding())[0];
  40         float limit = (inBlobs[RANGE_LIMIT]->cbuffer().as<float*>() +
  41                        inBlobs[RANGE_LIMIT]->getTensorDesc().getBlockingDesc().getOffsetPadding())[0];
  42         float delta = (inBlobs[RANGE_DELTA]->cbuffer().as<float*>() +
  43                        inBlobs[RANGE_DELTA]->getTensorDesc().getBlockingDesc().getOffsetPadding())[0];
  44         size_t work_amount_dst = std::floor(std::abs((limit - start) / delta));
  45         outShapes = {{work_amount_dst}};
  46     }
  47 };
  48
  49 }  // namespace ShapeInfer
  50 }  // namespace InferenceEngine
  51