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

/* Copyright 2018 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 <algorithm>
#include <string>
#include <vector>

#include "tensorflow/lite/context_util.h"
#include "tensorflow/lite/core/c/common.h"
#include "tensorflow/lite/kernels/internal/compatibility.h"
#include "tensorflow/lite/kernels/internal/optimized/optimized_ops.h"
#include "tensorflow/lite/kernels/internal/reference/reference_ops.h"
#include "tensorflow/lite/kernels/internal/tensor.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_type.h"

namespace tflite {
namespace ops {
namespace builtin {
namespace slice {

enum KernelType { … };

constexpr int kInputTensor = …;
constexpr int kBeginTensor = …;
constexpr int kSizeTensor = …;
constexpr int kOutputTensor = …;

// This Op only supports 1-5D cases and since we use the optimized ops 5D
// implementation, the 1-4D tensors are mapped to 5D.
const int kMaxDim = …;

template <typename T>
TfLiteStatus CalculateOutputShapeVector(TfLiteContext* context,
                                        const TfLiteTensor* input,
                                        const TfLiteTensor* begin,
                                        const TfLiteTensor* size,
                                        std::vector<int>* output_shape_vector) { … }

template <typename T>
void GetBeginAndSizeVectors(int dimensions, const TfLiteTensor* begin,
                            const TfLiteTensor* size, std::vector<int>* begins,
                            std::vector<int>* sizes) { … }

TfLiteStatus ResizeOutputShape(TfLiteContext* context,
                               const TfLiteTensor* input,
                               const TfLiteTensor* begin,
                               const TfLiteTensor* size, TfLiteTensor* output) { … }

bool ShapeHasRank(const TfLiteIntArray* shape) { … }

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

template <KernelType kernel_type>
TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) { … }

}  // namespace slice

TfLiteRegistration* Register_SLICE_REF() { … }

TfLiteRegistration* Register_SLICE() { … }

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