experiments/STT-tensorflow
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Extract reference for op SPACE_TO_DEPTH to standalone header

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Move the reference implementation to its own header so that micro
can use it without including unrelated depedencies via
reference_ops.h.
This commit is contained in:
Ryan Kuester 2020-12-28 17:45:12 -06:00
parent 727a286fa3
commit 1e73bbda95
3 changed files with 81 additions and 52 deletions
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2
tensorflow/lite/kernels/internal/BUILD
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@ -493,6 +493,7 @@ cc_library(
"reference/resize_nearest_neighbor.h",
"reference/round.h",
"reference/softmax.h",
"reference/space_to_depth.h",
"reference/strided_slice.h",
"reference/sub.h",
"reference/svdf.h",
@ -587,6 +588,7 @@ cc_library(
"reference/resize_nearest_neighbor.h",
"reference/round.h",
"reference/softmax.h",
"reference/space_to_depth.h",
"reference/strided_slice.h",
"reference/string_comparisons.h",
"reference/sub.h",

53
tensorflow/lite/kernels/internal/reference/reference_ops.h
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@ -61,6 +61,7 @@ limitations under the License.
#include "tensorflow/lite/kernels/internal/reference/resize_nearest_neighbor.h"
#include "tensorflow/lite/kernels/internal/reference/round.h"
#include "tensorflow/lite/kernels/internal/reference/softmax.h"
#include "tensorflow/lite/kernels/internal/reference/space_to_depth.h"
#include "tensorflow/lite/kernels/internal/reference/strided_slice.h"
#include "tensorflow/lite/kernels/internal/reference/string_comparisons.h"
#include "tensorflow/lite/kernels/internal/reference/sub.h"
@ -125,58 +126,6 @@ inline void DepthToSpace(const tflite::DepthToSpaceParams& op_params,
}
}
template <typename T>
inline void SpaceToDepth(const tflite::SpaceToDepthParams& op_params,
const RuntimeShape& unextended_input_shape,
const T* input_data,
const RuntimeShape& unextended_output_shape,
T* output_data) {
TFLITE_DCHECK_LE(unextended_input_shape.DimensionsCount(), 4);
TFLITE_DCHECK_LE(unextended_output_shape.DimensionsCount(), 4);
const RuntimeShape input_shape =
RuntimeShape::ExtendedShape(4, unextended_input_shape);
const RuntimeShape output_shape =
RuntimeShape::ExtendedShape(4, unextended_output_shape);
const int input_depth = input_shape.Dims(3);
const int input_width = input_shape.Dims(2);
const int input_height = input_shape.Dims(1);
const int input_batch = input_shape.Dims(0);
const int output_depth = output_shape.Dims(3);
const int output_width = output_shape.Dims(2);
const int output_height = output_shape.Dims(1);
const int output_batch = output_shape.Dims(0);
const int32 block_size = op_params.block_size;
TFLITE_DCHECK_EQ(input_width, output_width * block_size);
TFLITE_DCHECK_EQ(input_height, output_height * block_size);
TFLITE_DCHECK_EQ(input_depth * block_size * block_size, output_depth);
TFLITE_DCHECK_EQ(input_batch, output_batch);
for (int in_b = 0; in_b < input_batch; ++in_b) {
for (int in_h = 0; in_h < input_height; ++in_h) {
for (int in_w = 0; in_w < input_width; ++in_w) {
for (int in_d = 0; in_d < input_depth; ++in_d) {
const int out_d =
in_d + ((in_h % block_size) * block_size + in_w % block_size) *
input_depth;
const int out_w = in_w / block_size;
const int out_h = in_h / block_size;
const int out_b = in_b;
const int input_index = Offset(input_shape, in_b, in_h, in_w, in_d);
const int output_index =
Offset(output_shape, out_b, out_h, out_w, out_d);
output_data[output_index] = input_data[input_index];
}
}
}
}
}
inline void Elu(const RuntimeShape& input_shape, const float* input_data,
const RuntimeShape& output_shape, float* output_data) {
const int flat_size = MatchingFlatSize(input_shape, output_shape);

78
tensorflow/lite/kernels/internal/reference/space_to_depth.h Normal file
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@ -0,0 +1,78 @@
/* Copyright 2020 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_SPACE_TO_DEPTH_H_
#define TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_SPACE_TO_DEPTH_H_
#include "tensorflow/lite/kernels/internal/types.h"
namespace tflite {
namespace reference_ops {
template <typename T>
inline void SpaceToDepth(const tflite::SpaceToDepthParams& op_params,
const RuntimeShape& unextended_input_shape,
const T* input_data,
const RuntimeShape& unextended_output_shape,
T* output_data) {
TFLITE_DCHECK_LE(unextended_input_shape.DimensionsCount(), 4);
TFLITE_DCHECK_LE(unextended_output_shape.DimensionsCount(), 4);
const RuntimeShape input_shape =
RuntimeShape::ExtendedShape(4, unextended_input_shape);
const RuntimeShape output_shape =
RuntimeShape::ExtendedShape(4, unextended_output_shape);
const int input_depth = input_shape.Dims(3);
const int input_width = input_shape.Dims(2);
const int input_height = input_shape.Dims(1);
const int input_batch = input_shape.Dims(0);
const int output_depth = output_shape.Dims(3);
const int output_width = output_shape.Dims(2);
const int output_height = output_shape.Dims(1);
const int output_batch = output_shape.Dims(0);
const int32 block_size = op_params.block_size;
TFLITE_DCHECK_EQ(input_width, output_width * block_size);
TFLITE_DCHECK_EQ(input_height, output_height * block_size);
TFLITE_DCHECK_EQ(input_depth * block_size * block_size, output_depth);
TFLITE_DCHECK_EQ(input_batch, output_batch);
for (int in_b = 0; in_b < input_batch; ++in_b) {
for (int in_h = 0; in_h < input_height; ++in_h) {
for (int in_w = 0; in_w < input_width; ++in_w) {
for (int in_d = 0; in_d < input_depth; ++in_d) {
const int out_d =
in_d + ((in_h % block_size) * block_size + in_w % block_size) *
input_depth;
const int out_w = in_w / block_size;
const int out_h = in_h / block_size;
const int out_b = in_b;
const int input_index = Offset(input_shape, in_b, in_h, in_w, in_d);
const int output_index =
Offset(output_shape, out_b, out_h, out_w, out_d);
output_data[output_index] = input_data[input_index];
}
}
}
}
}
} // namespace reference_ops
} // namespace tflite
#endif // TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_SPACE_TO_DEPTH_H_