text: /*
  All modification made by Intel Corporation: © 2016 Intel Corporation
  
  All contributions by the University of California:
  Copyright (c) 2014, 2015, The Regents of the University of California (Regents)
  All rights reserved.
  
  All other contributions:
  Copyright (c) 2014, 2015, the respective contributors
  All rights reserved.
  For the list of contributors go to https://github.com/BVLC/caffe/blob/master/CONTRIBUTORS.md
  
  
  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
  
      * Redistributions of source code must retain the above copyright notice,
        this list of conditions and the following disclaimer.
      * Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.
      * Neither the name of Intel Corporation nor the names of its contributors
        may be used to endorse or promote products derived from this software
        without specific prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
  
  #ifndef CAFFE_HDF5_DATA_LAYER_HPP_
  #define CAFFE_HDF5_DATA_LAYER_HPP_
  
  #include "hdf5.h"
  
  #include <string>
  #include <vector>
  
  #include "caffe/blob.hpp"
  #include "caffe/layer.hpp"
  #include "caffe/proto/caffe.pb.h"
  
  #include "caffe/layers/base_data_layer.hpp"
  
  namespace caffe {
  
  /**
   * @brief Provides data to the Net from HDF5 files.
   *
   * TODO(dox): thorough documentation for Forward and proto params.
   */
  template <typename Dtype>
  class HDF5DataLayer : public Layer<Dtype> {
   public:
    explicit HDF5DataLayer(const LayerParameter& param)
        : Layer<Dtype>(param) {}
    virtual ~HDF5DataLayer();
    virtual void LayerSetUp(const vector<Blob<Dtype>*>& bottom,
        const vector<Blob<Dtype>*>& top);
    // Data layers should be shared by multiple solvers in parallel
    virtual inline bool ShareInParallel() const { return true; }
    // Data layers have no bottoms, so reshaping is trivial.
    virtual void Reshape(const vector<Blob<Dtype>*>& bottom,
        const vector<Blob<Dtype>*>& top) {}
  
    virtual inline const char* type() const { return "HDF5Data"; }
    virtual inline int ExactNumBottomBlobs() const { return 0; }
    virtual inline int MinTopBlobs() const { return 1; }
  
   protected:
    virtual void Forward_cpu(const vector<Blob<Dtype>*>& bottom,
        const vector<Blob<Dtype>*>& top);
    virtual void Forward_gpu(const vector<Blob<Dtype>*>& bottom,
        const vector<Blob<Dtype>*>& top);
    virtual void Backward_cpu(const vector<Blob<Dtype>*>& top,
        const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom) {}
    virtual void Backward_gpu(const vector<Blob<Dtype>*>& top,
        const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom) {}
    virtual void LoadHDF5FileData(const char* filename);
  
    std::vector<std::string> hdf_filenames_;
    unsigned int num_files_;
    unsigned int current_file_;
    hsize_t current_row_;
    std::vector<shared_ptr<Blob<Dtype> > > hdf_blobs_;
    std::vector<unsigned int> data_permutation_;
    std::vector<unsigned int> file_permutation_;
  };
  
  }  // namespace caffe
  
  #endif  // CAFFE_HDF5_DATA_LAYER_HPP_
  