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 | #include "tensorflow/lite/schema/schema_utils.h" |
16 | |
17 | #include <algorithm> |
18 | |
19 | #include "tensorflow/lite/kernels/internal/compatibility.h" |
20 | |
21 | namespace tflite { |
22 | |
23 | // The following GetBuiltinCode methods are the utility methods for reading |
24 | // builtin operatore code, ensuring compatibility issues between v3 and v3a |
25 | // schema. Always the maximum value of the two fields always will be the correct |
26 | // value as follows: |
27 | // |
28 | // - Supporting schema version v3 models |
29 | // |
30 | // The `builtin_code` field is not available in the v3 models. Flatbuffer |
31 | // library will feed zero value, which is the default value in the v3a schema. |
32 | // The actual builtin operatore code value will exist in the |
33 | // `deprecated_builtin_code` field. At the same time, it implies that |
34 | // `deprecated_builtin_code` >= `builtin_code` and the maximum value of the two |
35 | // fields will be same with `deprecated_builtin_code'. |
36 | // |
37 | // - Supporting builtin operator codes beyonds 127 |
38 | // |
39 | // New builtin operators, whose operator code is larger than 127, can not be |
40 | // assigned to the `deprecated_builtin_code` field. In such cases, the |
41 | // value of the `builtin_code` field should be used for the builtin operator |
42 | // code. In the case, the maximum value of the two fields will be the value of |
43 | // the `builtin_code` as the right value. |
44 | |
45 | BuiltinOperator GetBuiltinCode(const OperatorCode* op_code) { |
46 | // Caller should guarantee that the given argument value is not a nullptr. |
47 | TFLITE_DCHECK(op_code != nullptr); |
48 | |
49 | return std::max( |
50 | op_code->builtin_code(), |
51 | static_cast<BuiltinOperator>(op_code->deprecated_builtin_code())); |
52 | } |
53 | |
54 | BuiltinOperator GetBuiltinCode(const OperatorCodeT* op_code) { |
55 | // Caller should guarantee that the given argument value is not a nullptr. |
56 | TFLITE_DCHECK(op_code != nullptr); |
57 | |
58 | return std::max(op_code->builtin_code, static_cast<BuiltinOperator>( |
59 | op_code->deprecated_builtin_code)); |
60 | } |
61 | |
62 | } // namespace tflite |
63 | |