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 ANDROID_FRAMEWORKS_ML_NN_COMMON_OPERATIONS_LSHPROJECTION_H 18 #define ANDROID_FRAMEWORKS_ML_NN_COMMON_OPERATIONS_LSHPROJECTION_H 19 20 #include <vector> 21 22 #include "nnapi/Types.h" 23 24 namespace android { 25 namespace nn { 26 27 enum LSHProjectionType { 28 LSHProjectionType_UNKNOWN = 0, 29 LSHProjectionType_SPARSE_DEPRECATED = 1, 30 LSHProjectionType_DENSE = 2, 31 LSHProjectionType_SPARSE = 3, 32 }; 33 34 struct RunTimeOperandInfo; 35 struct Shape; 36 37 class LSHProjection { 38 public: 39 LSHProjection(const Operation& operation, RunTimeOperandInfo* operands); 40 41 static bool Prepare(const Operation& operation, RunTimeOperandInfo* operands, 42 Shape* outputShape); 43 template <typename T> 44 bool Eval(); 45 46 static constexpr int kHashTensor = 0; 47 static constexpr int kInputTensor = 1; 48 static constexpr int kWeightTensor = 2; // Optional 49 50 static constexpr int kTypeParam = 3; 51 52 static constexpr int kOutputTensor = 0; 53 54 private: 55 LSHProjectionType type_; 56 57 const RunTimeOperandInfo* hash_; 58 const RunTimeOperandInfo* input_; 59 const RunTimeOperandInfo* weight_; 60 61 RunTimeOperandInfo* output_; 62 }; 63 64 template <typename T> 65 int runningSignBit(const RunTimeOperandInfo* input, const RunTimeOperandInfo* weight, T seed); 66 67 template <typename T> 68 void SparseLshProjection(LSHProjectionType type, const RunTimeOperandInfo* hash, 69 const RunTimeOperandInfo* input, const RunTimeOperandInfo* weight, 70 int32_t* outBuffer); 71 72 template <typename T> 73 void DenseLshProjection(const RunTimeOperandInfo* hash, const RunTimeOperandInfo* input, 74 const RunTimeOperandInfo* weight, int32_t* outBuffer); 75 76 } // namespace nn 77 } // namespace android 78 79 #endif // ANDROID_FRAMEWORKS_ML_NN_COMMON_OPERATIONS_LSHPROJECTION_H 80