1 | /* Copyright 2019 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 | #ifndef TENSORFLOW_LITE_PORTABLE_TYPE_TO_TFLITETYPE_H_ |
16 | #define TENSORFLOW_LITE_PORTABLE_TYPE_TO_TFLITETYPE_H_ |
17 | |
18 | // Most of the definitions have been moved to this subheader so that Micro |
19 | // can include it without relying on <string> and <complex>, which isn't |
20 | // available on all platforms. |
21 | |
22 | // Arduino build defines abs as a macro here. That is invalid C++, and breaks |
23 | // libc++'s <complex> header, undefine it. |
24 | #ifdef abs |
25 | #undef abs |
26 | #endif |
27 | |
28 | #include <stdint.h> |
29 | |
30 | #include "tensorflow/lite/c/common.h" |
31 | |
32 | namespace tflite { |
33 | |
34 | // Map statically from a C++ type to a TfLiteType. Used in interpreter for |
35 | // safe casts. |
36 | // Example: |
37 | // typeToTfLiteType<bool>() -> kTfLiteBool |
38 | template <typename T> |
39 | constexpr TfLiteType typeToTfLiteType() { |
40 | return kTfLiteNoType; |
41 | } |
42 | // Map from TfLiteType to the corresponding C++ type. |
43 | // Example: |
44 | // TfLiteTypeToType<kTfLiteBool>::Type -> bool |
45 | template <TfLiteType TFLITE_TYPE_ENUM> |
46 | struct TfLiteTypeToType {}; // Specializations below |
47 | |
48 | // Template specialization for both typeToTfLiteType and TfLiteTypeToType. |
49 | #define MATCH_TYPE_AND_TFLITE_TYPE(CPP_TYPE, TFLITE_TYPE_ENUM) \ |
50 | template <> \ |
51 | constexpr TfLiteType typeToTfLiteType<CPP_TYPE>() { \ |
52 | return TFLITE_TYPE_ENUM; \ |
53 | } \ |
54 | template <> \ |
55 | struct TfLiteTypeToType<TFLITE_TYPE_ENUM> { \ |
56 | using Type = CPP_TYPE; \ |
57 | } |
58 | |
59 | // No string mapping is included here, since the TF Lite packed representation |
60 | // doesn't correspond to a C++ type well. |
61 | MATCH_TYPE_AND_TFLITE_TYPE(int32_t, kTfLiteInt32); |
62 | MATCH_TYPE_AND_TFLITE_TYPE(uint32_t, kTfLiteUInt32); |
63 | MATCH_TYPE_AND_TFLITE_TYPE(int16_t, kTfLiteInt16); |
64 | MATCH_TYPE_AND_TFLITE_TYPE(uint16_t, kTfLiteUInt16); |
65 | MATCH_TYPE_AND_TFLITE_TYPE(int64_t, kTfLiteInt64); |
66 | MATCH_TYPE_AND_TFLITE_TYPE(float, kTfLiteFloat32); |
67 | MATCH_TYPE_AND_TFLITE_TYPE(unsigned char, kTfLiteUInt8); |
68 | MATCH_TYPE_AND_TFLITE_TYPE(int8_t, kTfLiteInt8); |
69 | MATCH_TYPE_AND_TFLITE_TYPE(bool, kTfLiteBool); |
70 | MATCH_TYPE_AND_TFLITE_TYPE(TfLiteFloat16, kTfLiteFloat16); |
71 | MATCH_TYPE_AND_TFLITE_TYPE(double, kTfLiteFloat64); |
72 | MATCH_TYPE_AND_TFLITE_TYPE(uint64_t, kTfLiteUInt64); |
73 | |
74 | } // namespace tflite |
75 | #endif // TENSORFLOW_LITE_PORTABLE_TYPE_TO_TFLITETYPE_H_ |
76 | |