Caffe
data_layer.hpp
1 #ifndef CAFFE_DATA_LAYER_HPP_
2 #define CAFFE_DATA_LAYER_HPP_
3 
4 #include <vector>
5 
6 #include "caffe/blob.hpp"
7 #include "caffe/data_transformer.hpp"
8 #include "caffe/internal_thread.hpp"
9 #include "caffe/layer.hpp"
10 #include "caffe/layers/base_data_layer.hpp"
11 #include "caffe/proto/caffe.pb.h"
12 #include "caffe/util/db.hpp"
13 
14 namespace caffe {
15 
16 template <typename Dtype>
17 class DataLayer : public BasePrefetchingDataLayer<Dtype> {
18  public:
19  explicit DataLayer(const LayerParameter& param);
20  virtual ~DataLayer();
21  virtual void DataLayerSetUp(const vector<Blob<Dtype>*>& bottom,
22  const vector<Blob<Dtype>*>& top);
23  // DataLayer uses DataReader instead for sharing for parallelism
24  virtual inline bool ShareInParallel() const { return false; }
25  virtual inline const char* type() const { return "Data"; }
26  virtual inline int ExactNumBottomBlobs() const { return 0; }
27  virtual inline int MinTopBlobs() const { return 1; }
28  virtual inline int MaxTopBlobs() const { return 2; }
29 
30  protected:
31  void Next();
32  bool Skip();
33  virtual void load_batch(Batch<Dtype>* batch);
34 
35  shared_ptr<db::DB> db_;
36  shared_ptr<db::Cursor> cursor_;
37  uint64_t offset_;
38 };
39 
40 } // namespace caffe
41 
42 #endif // CAFFE_DATA_LAYER_HPP_
Definition: base_data_layer.hpp:49
Definition: base_data_layer.hpp:55
A layer factory that allows one to register layers. During runtime, registered layers can be called b...
Definition: blob.hpp:14
Definition: data_layer.hpp:17
virtual int ExactNumBottomBlobs() const
Returns the exact number of bottom blobs required by the layer, or -1 if no exact number is required...
Definition: data_layer.hpp:26
virtual const char * type() const
Returns the layer type.
Definition: data_layer.hpp:25
virtual int MaxTopBlobs() const
Returns the maximum number of top blobs required by the layer, or -1 if no maximum number is required...
Definition: data_layer.hpp:28
virtual int MinTopBlobs() const
Returns the minimum number of top blobs required by the layer, or -1 if no minimum number is required...
Definition: data_layer.hpp:27
A wrapper around SyncedMemory holders serving as the basic computational unit through which Layers...
Definition: blob.hpp:24