1 /* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
2 
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6 
7     http://www.apache.org/licenses/LICENSE-2.0
8 
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15 #ifndef TENSORFLOW_CORE_DATA_SERVICE_COMPRESSION_UTILS_H_
16 #define TENSORFLOW_CORE_DATA_SERVICE_COMPRESSION_UTILS_H_
17 
18 #include "tensorflow/core/common_runtime/dma_helper.h"
19 #include "tensorflow/core/data/dataset.pb.h"
20 #include "tensorflow/core/platform/status.h"
21 
22 namespace tensorflow {
23 namespace data {
24 
25 // Compresses the components of `element` into the `CompressedElement` proto.
26 //
27 // In addition to writing the actual compressed bytes, `Compress` fills
28 // out the per-component metadata for the `CompressedElement`.
29 Status CompressElement(const std::vector<Tensor>& element,
30                        CompressedElement* out);
31 
32 // Uncompresses a `CompressedElement` into a vector of tensor components.
33 Status UncompressElement(const CompressedElement& compressed,
34                          std::vector<Tensor>* out);
35 
36 }  // namespace data
37 }  // namespace tensorflow
38 
39 #endif  // TENSORFLOW_CORE_DATA_SERVICE_COMPRESSION_UTILS_H_
40