chromium/third_party/tflite/src/tensorflow/lite/kernels/internal/reference/resize_bilinear.h

/* Copyright 2021 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.
==============================================================================*/
#ifndef TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_RESIZE_BILINEAR_H_
#define TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_RESIZE_BILINEAR_H_

#include <algorithm>
#include <cmath>
#include <cstdint>
#include <limits>

#include "tensorflow/lite/kernels/internal/cppmath.h"
#include "tensorflow/lite/kernels/internal/types.h"

namespace tflite {
namespace reference_ops {

inline void ComputeInterpolationValues(const float value, const float scale,
                                       const bool half_pixel_centers,
                                       int32_t input_size, float* scaled_value,
                                       int32_t* lower_bound,
                                       int32_t* upper_bound) { … }

template <typename T>
inline void ResizeBilinear(const tflite::ResizeBilinearParams& op_params,
                           const RuntimeShape& unextended_input_shape,
                           const T* input_data,
                           const RuntimeShape& unextended_output_size_shape,
                           const int32_t* output_size_data,
                           const RuntimeShape& unextended_output_shape,
                           T* output_data) { … }

inline void ComputeInterpolationValuesInteger(
    const int32_t value, const int32_t scale_10, const bool half_pixel_centers,
    int32_t input_size, int32_t* scaled_value, int32_t* lower_bound,
    int32_t* upper_bound) { … }

// Same as above but doesn't use any floating-point for the resize
template <typename T>
inline void ResizeBilinearInteger(
    const tflite::ResizeBilinearParams& op_params,
    const RuntimeShape& unextended_input_shape, const T* input_data,
    const RuntimeShape& unextended_output_size_shape,
    const int32_t* output_size_data,
    const RuntimeShape& unextended_output_shape, T* output_data) { … }

}  // namespace reference_ops
}  // namespace tflite

#endif  // TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_RESIZE_BILINEAR_H_