1/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16#ifndef TENSORFLOW_LITE_TOOLS_VERIFIER_H_
17#define TENSORFLOW_LITE_TOOLS_VERIFIER_H_
18
19#include <stdio.h>
20
21#include "tensorflow/lite/core/api/error_reporter.h"
22#include "tensorflow/lite/core/api/op_resolver.h"
23#include "tensorflow/lite/error_reporter.h" // Legacy.
24#include "tensorflow/lite/model.h" // Legacy.
25
26namespace tflite {
27
28class AlwaysTrueResolver : public OpResolver {
29 public:
30 AlwaysTrueResolver() {}
31 const TfLiteRegistration* FindOp(tflite::BuiltinOperator op,
32 int version) const override {
33 static TfLiteRegistration null_registration = {nullptr, nullptr, nullptr,
34 nullptr};
35 return &null_registration;
36 }
37 const TfLiteRegistration* FindOp(const char* op, int version) const override {
38 static TfLiteRegistration null_registration = {nullptr, nullptr, nullptr,
39 nullptr};
40 return &null_registration;
41 }
42};
43
44// Verifies the integrity of a Tensorflow Lite flatbuffer model file.
45// Currently, it verifies:
46// * The file is following a legit flatbuffer schema.
47// * The model is in supported version.
48// * All ops used in the model are supported by OpResolver.
49// DEPRECATED:
50// This function is deprecated, because it doesn't take delegates into
51// account, and as a result may report errors if the model contains
52// operators that are not supported by the OpResolver but that would be
53// rewritten by any TfLiteDelegate that you are using.
54// Suggested replacement:
55// Use the version below that doesn't takes an OpResolver (and
56// doesn't check the validity of the ops) instead of this function,
57// and delay verification of the ops until after you have constructed
58// the Interpreter. To verify that the operators in the model are supported
59// by the delegate(s) and/or by the OpResolver, construct the Interpreter,
60// applying the TfLiteDelegate(s) using InterpreterBuilder::AddDelegate,
61// and then just check the return value from Interpreter::AllocateTensors().
62bool Verify(const void* buf, size_t len, const OpResolver& resolver,
63 ErrorReporter* error_reporter);
64
65// Verifies the integrity of a Tensorflow Lite flatbuffer model file.
66// Currently, it verifies:
67// * The file is following a legit flatbuffer schema.
68// * The model is in supported version.
69// * Some basic consistency checks on the graph.
70// * Some validity checks on the tensors.
71bool Verify(const void* buf, size_t len, ErrorReporter* error_reporter);
72
73} // namespace tflite
74
75#endif // TENSORFLOW_LITE_TOOLS_VERIFIER_H_
76