1 /* Copyright 2020 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_LITE_DELEGATES_GPU_COMMON_WINOGRAD_UTIL_H_ 17 #define TENSORFLOW_LITE_DELEGATES_GPU_COMMON_WINOGRAD_UTIL_H_ 18 19 #include <vector> 20 21 #include "tensorflow/lite/delegates/gpu/common/data_type.h" 22 #include "tensorflow/lite/delegates/gpu/common/operations.h" 23 #include "tensorflow/lite/delegates/gpu/common/shape.h" 24 #include "tensorflow/lite/delegates/gpu/common/tensor.h" 25 26 namespace tflite { 27 namespace gpu { 28 29 // Matrices for Winograd trasformations received with method described here 30 // https://openreview.net/pdf?id=H1ZaRZVKg 31 32 // returns A transposed matrix(6 * 4) as array (24 values) for Winograd4x4To6x6 33 std::vector<float> AtMatrixForWinograd4x4To6x6(); 34 35 // returns B transposed matrix(6 * 6) as array (36 values) for Winograd4x4To6x6 36 std::vector<float> BtMatrixForWinograd4x4To6x6(); 37 38 void RearrangeWeightsToWinograd4x4To6x6Weights( 39 const Tensor<OHWI, DataType::FLOAT32>& src_weights, 40 Tensor<OHWI, DataType::FLOAT32>* dst_weights); 41 42 bool IsSuitableForWinograd4x4To6x6(const Convolution2DAttributes& attr); 43 44 } // namespace gpu 45 } // namespace tflite 46 47 #endif // TENSORFLOW_LITE_DELEGATES_GPU_COMMON_WINOGRAD_UTIL_H_ 48