1 | /* Copyright 2017 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 | #include "tensorflow/lite/c/builtin_op_data.h" |
16 | #include "tensorflow/lite/c/common.h" |
17 | #include "tensorflow/lite/kernels/internal/optimized/optimized_ops.h" |
18 | #include "tensorflow/lite/kernels/internal/reference/reference_ops.h" |
19 | #include "tensorflow/lite/kernels/internal/tensor.h" |
20 | #include "tensorflow/lite/kernels/internal/tensor_ctypes.h" |
21 | #include "tensorflow/lite/kernels/internal/types.h" |
22 | #include "tensorflow/lite/kernels/kernel_util.h" |
23 | |
24 | namespace tflite { |
25 | namespace ops { |
26 | namespace builtin { |
27 | namespace local_response_norm { |
28 | |
29 | // This file has two implementation of LocalResponseNorm. |
30 | enum KernelType { |
31 | kReference, |
32 | kGenericOptimized, |
33 | }; |
34 | |
35 | constexpr int kInputTensor = 0; |
36 | constexpr int kOutputTensor = 0; |
37 | |
38 | TfLiteStatus Prepare(TfLiteContext* context, TfLiteNode* node) { |
39 | TF_LITE_ENSURE_EQ(context, NumInputs(node), 1); |
40 | TF_LITE_ENSURE_EQ(context, NumOutputs(node), 1); |
41 | |
42 | const TfLiteTensor* input; |
43 | TF_LITE_ENSURE_OK(context, GetInputSafe(context, node, kInputTensor, &input)); |
44 | TfLiteTensor* output; |
45 | TF_LITE_ENSURE_OK(context, |
46 | GetOutputSafe(context, node, kOutputTensor, &output)); |
47 | |
48 | TF_LITE_ENSURE_EQ(context, NumDimensions(input), 4); |
49 | |
50 | TF_LITE_ENSURE_TYPES_EQ(context, output->type, kTfLiteFloat32); |
51 | TF_LITE_ENSURE_TYPES_EQ(context, input->type, output->type); |
52 | |
53 | TfLiteIntArray* output_size = TfLiteIntArrayCreate(4); |
54 | output_size->data[0] = input->dims->data[0]; |
55 | output_size->data[1] = input->dims->data[1]; |
56 | output_size->data[2] = input->dims->data[2]; |
57 | output_size->data[3] = input->dims->data[3]; |
58 | |
59 | return context->ResizeTensor(context, output, output_size); |
60 | } |
61 | |
62 | template <KernelType kernel_type> |
63 | TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) { |
64 | auto* params = |
65 | reinterpret_cast<TfLiteLocalResponseNormParams*>(node->builtin_data); |
66 | |
67 | const TfLiteTensor* input; |
68 | TF_LITE_ENSURE_OK(context, GetInputSafe(context, node, kInputTensor, &input)); |
69 | TfLiteTensor* output; |
70 | TF_LITE_ENSURE_OK(context, |
71 | GetOutputSafe(context, node, kOutputTensor, &output)); |
72 | |
73 | if (output->type == kTfLiteFloat32) { |
74 | #define TF_LITE_LOCAL_RESPONSE_NORM(type) \ |
75 | tflite::LocalResponseNormalizationParams op_params; \ |
76 | op_params.range = params->radius; \ |
77 | op_params.bias = params->bias; \ |
78 | op_params.alpha = params->alpha; \ |
79 | op_params.beta = params->beta; \ |
80 | type::LocalResponseNormalization( \ |
81 | op_params, GetTensorShape(input), GetTensorData<float>(input), \ |
82 | GetTensorShape(output), GetTensorData<float>(output)) |
83 | if (kernel_type == kReference) { |
84 | TF_LITE_LOCAL_RESPONSE_NORM(reference_ops); |
85 | } |
86 | if (kernel_type == kGenericOptimized) { |
87 | TF_LITE_LOCAL_RESPONSE_NORM(optimized_ops); |
88 | } |
89 | #undef TF_LITE_LOCAL_RESPONSE_NORM |
90 | } else { |
91 | TF_LITE_KERNEL_LOG(context, "Output type is %d, requires float." , |
92 | output->type); |
93 | return kTfLiteError; |
94 | } |
95 | |
96 | return kTfLiteOk; |
97 | } |
98 | |
99 | } // namespace local_response_norm |
100 | |
101 | TfLiteRegistration* Register_LOCAL_RESPONSE_NORM_REF() { |
102 | static TfLiteRegistration r = { |
103 | nullptr, nullptr, local_response_norm::Prepare, |
104 | local_response_norm::Eval<local_response_norm::kReference>}; |
105 | return &r; |
106 | } |
107 | |
108 | TfLiteRegistration* Register_LOCAL_RESPONSE_NORM_GENERIC_OPT() { |
109 | static TfLiteRegistration r = { |
110 | nullptr, nullptr, local_response_norm::Prepare, |
111 | local_response_norm::Eval<local_response_norm::kGenericOptimized>}; |
112 | return &r; |
113 | } |
114 | |
115 | TfLiteRegistration* Register_LOCAL_RESPONSE_NORMALIZATION() { |
116 | return Register_LOCAL_RESPONSE_NORM_GENERIC_OPT(); |
117 | } |
118 | |
119 | } // namespace builtin |
120 | } // namespace ops |
121 | } // namespace tflite |
122 | |