wehub-resource-sync
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_COMPILER_MLIR_KERNELS_PADDING_H_
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#define TENSORFLOW_COMPILER_MLIR_KERNELS_PADDING_H_
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typedef enum {
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kTfLitePaddingUnknown = 0,
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kTfLitePaddingSame,
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kTfLitePaddingValid,
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} TfLitePadding;
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// LINT.IfChange
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namespace tflite_migration {
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// Matching GetWindowedOutputSize in TensorFlow.
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inline int ComputeOutSize(TfLitePadding padding, int image_size,
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int filter_size, int stride, int dilation_rate = 1) {
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int effective_filter_size = (filter_size - 1) * dilation_rate + 1;
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// TODO(b/186448822): This uses 0 since the function has no other way to
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// report error case
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if (stride == 0) return 0;
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switch (padding) {
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case kTfLitePaddingSame:
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return (image_size + stride - 1) / stride;
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case kTfLitePaddingValid:
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return (image_size + stride - effective_filter_size) / stride;
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default:
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return 0;
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}
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}
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// It's not guaranteed that padding is symmetric. It's important to keep
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// offset for algorithms need all paddings.
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inline int ComputePaddingWithOffset(int stride, int dilation_rate, int in_size,
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int filter_size, int out_size,
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int* offset) {
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int effective_filter_size = (filter_size - 1) * dilation_rate + 1;
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int total_padding =
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((out_size - 1) * stride + effective_filter_size - in_size);
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total_padding = total_padding > 0 ? total_padding : 0;
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*offset = total_padding % 2;
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return total_padding / 2;
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}
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} // namespace tflite_migration
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// LINT.ThenChange(//tensorflow/lite/kernels/padding.h)
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#endif // TENSORFLOW_COMPILER_MLIR_KERNELS_PADDING_H_
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