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/*
* 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 ANDROID_FRAMEWORKS_ML_NN_COMMON_OPERATIONS_LSHPROJECTION_H
#define ANDROID_FRAMEWORKS_ML_NN_COMMON_OPERATIONS_LSHPROJECTION_H
#include <vector>
#include "nnapi/Types.h"
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, RunTimeOperandInfo* operands);
static bool Prepare(const Operation& operation, 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 // ANDROID_FRAMEWORKS_ML_NN_COMMON_OPERATIONS_LSHPROJECTION_H
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