text: // Tencent is pleased to support the open source community by making ncnn available.
  //
  // Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
  //
  // Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
  // in compliance with the License. You may obtain a copy of the License at
  //
  // https://opensource.org/licenses/BSD-3-Clause
  //
  // Unless required by applicable law or agreed to in writing, software distributed
  // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
  // CONDITIONS OF ANY KIND, either express or implied. See the License for the
  // specific language governing permissions and limitations under the License.
  
  #ifndef LAYER_CROP_H
  #define LAYER_CROP_H
  
  #include "layer.h"
  
  namespace ncnn {
  
  class Crop : public Layer
  {
  public:
      Crop();
  
      virtual int load_param(const ParamDict& pd);
  
      virtual int forward(const Mat& bottom_blob, Mat& top_blob, const Option& opt) const;
  
      virtual int forward(const std::vector<Mat>& bottom_blobs, std::vector<Mat>& top_blobs, const Option& opt) const;
  
  #if NCNN_VULKAN
      virtual int create_pipeline();
      virtual int destroy_pipeline();
  
      virtual int forward(const VkMat& bottom_blob, VkMat& top_blob, VkCompute& cmd, const Option& opt) const;
  
      virtual int forward(const std::vector<VkMat>& bottom_blobs, std::vector<VkMat>& top_blobs, VkCompute& cmd, const Option& opt) const;
  #endif // NCNN_VULKAN
  
  public:
      // -233 = dynamic offset from reference blob
      int woffset;
      int hoffset;
      int coffset;
  
      // -233 = remaining
      // -234 = remaining - 1
      int outw;
      int outh;
      int outc;
  
  #if NCNN_VULKAN
      Pipeline* pipeline_crop;
      Pipeline* pipeline_crop_pack4;
  #endif // NCNN_VULKAN
  };
  
  } // namespace ncnn
  
  #endif // LAYER_CROP_H
  