1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef FRAMEWORKS_ML_NN_RNN_H 18 #define FRAMEWORKS_ML_NN_RNN_H 19 20 #include "ActivationFunctor.h" 21 22 namespace android { 23 namespace hardware { 24 namespace neuralnetworks { 25 namespace V1_0 { 26 struct Operation; 27 } 28 } // namespace neuralnetworks 29 } // namespace hardware 30 } // namespace android 31 32 namespace android { 33 namespace nn { 34 35 struct RunTimeOperandInfo; 36 struct Shape; 37 38 class RNN { 39 public: 40 RNN(const android::hardware::neuralnetworks::V1_0::Operation &operation, 41 std::vector<RunTimeOperandInfo> &operands); 42 43 static bool Prepare(const android::hardware::neuralnetworks::V1_0::Operation &operation, 44 std::vector<RunTimeOperandInfo> &operands, 45 Shape *hiddenStateShape, 46 Shape *outputShape); 47 bool Eval(); 48 49 static constexpr int kInputTensor = 0; 50 static constexpr int kWeightsTensor = 1; // Optional 51 static constexpr int kRecurrentWeightsTensor = 2; 52 static constexpr int kBiasTensor = 3; 53 static constexpr int kHiddenStateInTensor = 4; 54 static constexpr int kActivationParam = 5; 55 56 static constexpr int kHiddenStateOutTensor = 0; 57 static constexpr int kOutputTensor = 1; 58 59 private: 60 ActivationFn activation_; 61 62 const RunTimeOperandInfo *input_; 63 const RunTimeOperandInfo *weights_; 64 const RunTimeOperandInfo *recurrent_weights_; 65 const RunTimeOperandInfo *bias_; 66 const RunTimeOperandInfo *hidden_state_in_; 67 68 RunTimeOperandInfo *hidden_state_out_; 69 RunTimeOperandInfo *output_; 70 }; 71 72 } // namespace nn 73 } // namespace android 74 75 #endif // FRAMEWORKS_ML_NN_RNN_H 76