/* * Copyright (C) 2017 The Android Open Source Project * * 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 FRAMEWORKS_ML_NN_LSH_PROJECTION_H #define FRAMEWORKS_ML_NN_LSH_PROJECTION_H #include "HalOperation.h" #include <vector> namespace android { namespace nn { enum LSHProjectionType { LSHProjectionType_UNKNOWN = 0, LSHProjectionType_SPARSE_DEPRECATED = 1, LSHProjectionType_DENSE = 2, LSHProjectionType_SPARSE = 3, }; struct RunTimeOperandInfo; struct Shape; class LSHProjection { public: LSHProjection(const Operation& operation, std::vector<RunTimeOperandInfo>& operands); static bool Prepare(const Operation& operation, std::vector<RunTimeOperandInfo>& operands, Shape* outputShape); template <typename T> bool Eval(); static constexpr int kHashTensor = 0; static constexpr int kInputTensor = 1; static constexpr int kWeightTensor = 2; // Optional static constexpr int kTypeParam = 3; static constexpr int kOutputTensor = 0; private: LSHProjectionType type_; const RunTimeOperandInfo* hash_; const RunTimeOperandInfo* input_; const RunTimeOperandInfo* weight_; RunTimeOperandInfo* output_; }; template <typename T> int runningSignBit(const RunTimeOperandInfo* input, const RunTimeOperandInfo* weight, T seed); template <typename T> void SparseLshProjection(LSHProjectionType type, const RunTimeOperandInfo* hash, const RunTimeOperandInfo* input, const RunTimeOperandInfo* weight, int32_t* outBuffer); template <typename T> void DenseLshProjection(const RunTimeOperandInfo* hash, const RunTimeOperandInfo* input, const RunTimeOperandInfo* weight, int32_t* outBuffer); } // namespace nn } // namespace android #endif // FRAMEWORKS_ML_NN_LSH_PROJECTION_H