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_LITE_DELEGATES_HEXAGON_BUILDERS_CAST_BUILDER_H_ 16 #define TENSORFLOW_LITE_DELEGATES_HEXAGON_BUILDERS_CAST_BUILDER_H_ 17 18 #include <vector> 19 20 #include "tensorflow/lite/delegates/hexagon/builders/op_builder.h" 21 22 namespace tflite { 23 namespace delegates { 24 namespace hexagon { 25 26 // This builder is used to cast int8 input or output tensors to & from uint8 27 // respectively. No TFLite op converts to this. 28 // NOTE: There are no explicit tests for this, but is required for all int8 unit 29 // tests. 30 class CastOpBuilder : public OpBuilder { 31 public: CastOpBuilder(GraphBuilder * graph_builder,int op_type)32 explicit CastOpBuilder(GraphBuilder* graph_builder, int op_type) 33 : OpBuilder(graph_builder, op_type) {} 34 // inputs & outputs should contain the *same* (one) TFLite tensor-id, since 35 // tensors are cast in-place. The tensor will point to a different Hexagon 36 // TensorID after this runs. 37 TfLiteStatus PopulateSubGraph(const TfLiteIntArray* inputs, 38 const TfLiteIntArray* outputs, 39 TfLiteContext* context) override; 40 41 TfLiteStatus RegisterOutputs(const TfLiteIntArray* outputs, 42 TfLiteContext* context) override; 43 44 ~CastOpBuilder() override; 45 46 private: 47 TensorID node_output_; 48 }; 49 50 } // namespace hexagon 51 } // namespace delegates 52 } // namespace tflite 53 54 #endif // TENSORFLOW_LITE_DELEGATES_HEXAGON_BUILDERS_CAST_BUILDER_H_ 55