chromium/third_party/tflite/src/tensorflow/lite/kernels/gather.cc

/* Copyright 2017 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.
==============================================================================*/
#include <stdint.h>

#include "tensorflow/lite/core/c/builtin_op_data.h"
#include "tensorflow/lite/core/c/common.h"
#include "tensorflow/lite/kernels/internal/optimized/optimized_ops.h"
#include "tensorflow/lite/kernels/internal/tensor_ctypes.h"
#include "tensorflow/lite/kernels/internal/types.h"
#include "tensorflow/lite/kernels/kernel_util.h"
#include "tensorflow/lite/string_util.h"

namespace tflite {
namespace ops {
namespace builtin {
namespace gather {
constexpr int kInputTensor = …;
constexpr int kInputPositions = …;
constexpr int kOutputTensor = …;

struct OpData { … };

void* Init(TfLiteContext* context, const char* buffer, size_t length) { … }

void Free(TfLiteContext* context, void* buffer) { … }

TfLiteStatus EvalImpl(TfLiteContext* context, TfLiteNode* node);

TfLiteStatus Prepare(TfLiteContext* context, TfLiteNode* node) { … }

template <typename InputT, typename PositionsT>
TfLiteStatus Gather(TfLiteContext* context, const TfLiteGatherParams& params,
                    const TfLiteTensor* input, const TfLiteTensor* positions,
                    TfLiteTensor* output) { … }

template <typename PositionT>
TfLiteStatus GatherStrings(TfLiteContext* context, const TfLiteTensor* input,
                           const TfLiteTensor* positions,
                           TfLiteTensor* output) { … }

TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) { … }

template <class PosT>
TfLiteStatus DispatchEvalInputType(TfLiteContext* const context,
                                   const TfLiteGatherParams* const params,
                                   const TfLiteTensor* const input,
                                   const TfLiteTensor* const positions,
                                   TfLiteTensor* const output) { … }

TfLiteStatus DispatchEvalPositionType(TfLiteContext* const context,
                                      const TfLiteGatherParams* const params,
                                      const TfLiteTensor* const input,
                                      const TfLiteTensor* const positions,
                                      TfLiteTensor* const output) { … }

TfLiteStatus EvalImpl(TfLiteContext* context, TfLiteNode* node) { … }
}  // namespace gather

TfLiteRegistration* Register_GATHER() { … }

}  // namespace builtin
}  // namespace ops
}  // namespace tflite