| /* Copyright 2018 The TensorFlow Authors. All Rights Reserved. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| 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 TENSORFLOW_LITE_MUTABLE_OP_RESOLVER_H_ |
| #define TENSORFLOW_LITE_MUTABLE_OP_RESOLVER_H_ |
| |
| #include <string> |
| #include <unordered_map> |
| |
| #include "tensorflow/lite/core/api/op_resolver.h" |
| #include "tensorflow/lite/util.h" |
| |
| namespace tflite { |
| |
| // Some versions of gcc doesn't support partial specialization in class scope, |
| // so these are defined in a namescope. |
| namespace op_resolver_hasher { |
| template <typename V> |
| struct ValueHasher { |
| size_t operator()(const V& v) const { return std::hash<V>()(v); } |
| }; |
| |
| template <> |
| struct ValueHasher<tflite::BuiltinOperator> { |
| size_t operator()(const tflite::BuiltinOperator& v) const { |
| return std::hash<int>()(static_cast<int>(v)); |
| } |
| }; |
| |
| template <typename T> |
| struct OperatorKeyHasher { |
| size_t operator()(const T& x) const { |
| size_t a = ValueHasher<typename T::first_type>()(x.first); |
| size_t b = ValueHasher<typename T::second_type>()(x.second); |
| return CombineHashes({a, b}); |
| } |
| }; |
| } // namespace op_resolver_hasher |
| |
| // An OpResolver that is mutable, also used as the op in gen_op_registration. |
| // A typical usage: |
| // MutableOpResolver resolver; |
| // resolver.AddBuiltin(BuiltinOperator_ADD, Register_ADD()); |
| // resolver.AddCustom("CustomOp", Register_CUSTOM_OP()); |
| // InterpreterBuilder(model, resolver)(&interpreter); |
| class MutableOpResolver : public OpResolver { |
| public: |
| const TfLiteRegistration* FindOp(tflite::BuiltinOperator op, |
| int version) const override; |
| const TfLiteRegistration* FindOp(const char* op, int version) const override; |
| void AddBuiltin(tflite::BuiltinOperator op, |
| const TfLiteRegistration* registration, int min_version = 1, |
| int max_version = 1); |
| void AddCustom(const char* name, const TfLiteRegistration* registration, |
| int min_version = 1, int max_version = 1); |
| void AddAll(const MutableOpResolver& other); |
| |
| private: |
| typedef std::pair<tflite::BuiltinOperator, int> BuiltinOperatorKey; |
| typedef std::pair<std::string, int> CustomOperatorKey; |
| |
| std::unordered_map<BuiltinOperatorKey, TfLiteRegistration, |
| op_resolver_hasher::OperatorKeyHasher<BuiltinOperatorKey> > |
| builtins_; |
| std::unordered_map<CustomOperatorKey, TfLiteRegistration, |
| op_resolver_hasher::OperatorKeyHasher<CustomOperatorKey> > |
| custom_ops_; |
| }; |
| |
| } // namespace tflite |
| |
| #endif // TENSORFLOW_LITE_MUTABLE_OP_RESOLVER_H_ |