1 /* Copyright 2021 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/tools/delegates/delegate_provider.h"
16
17 #include <algorithm>
18 #include <string>
19 #include <utility>
20
21 namespace tflite {
22 namespace tools {
23
CreateNullDelegate()24 TfLiteDelegatePtr CreateNullDelegate() {
25 return TfLiteDelegatePtr(nullptr, [](TfLiteDelegate*) {});
26 }
27
AddAllDelegateParams() const28 void ProvidedDelegateList::AddAllDelegateParams() const {
29 for (const auto& provider : providers_) {
30 params_->Merge(provider->DefaultParams());
31 }
32 }
33
AppendCmdlineFlags(std::vector<Flag> & flags) const34 void ProvidedDelegateList::AppendCmdlineFlags(std::vector<Flag>& flags) const {
35 for (const auto& provider : providers_) {
36 auto delegate_flags = provider->CreateFlags(params_);
37 flags.insert(flags.end(), delegate_flags.begin(), delegate_flags.end());
38 }
39 }
40
RemoveCmdlineFlag(std::vector<Flag> & flags,const std::string & name) const41 void ProvidedDelegateList::RemoveCmdlineFlag(std::vector<Flag>& flags,
42 const std::string& name) const {
43 decltype(flags.begin()) it;
44 for (it = flags.begin(); it < flags.end();) {
45 if (it->GetFlagName() == name) {
46 it = flags.erase(it);
47 } else {
48 ++it;
49 }
50 }
51 }
52
53 std::vector<ProvidedDelegateList::ProvidedDelegate>
CreateAllRankedDelegates(const ToolParams & params) const54 ProvidedDelegateList::CreateAllRankedDelegates(const ToolParams& params) const {
55 std::vector<ProvidedDelegateList::ProvidedDelegate> delegates;
56 for (const auto& provider : providers_) {
57 auto ptr_rank = provider->CreateRankedTfLiteDelegate(params);
58 // It's possible that a delegate of certain type won't be created as
59 // user-specified tool params tells not to.
60 if (ptr_rank.first == nullptr) continue;
61 TFLITE_LOG(INFO) << provider->GetName() << " delegate created.";
62
63 ProvidedDelegateList::ProvidedDelegate info;
64 info.provider = provider.get();
65 info.delegate = std::move(ptr_rank.first);
66 info.rank = ptr_rank.second;
67 delegates.emplace_back(std::move(info));
68 }
69
70 std::sort(delegates.begin(), delegates.end(),
71 [](const ProvidedDelegateList::ProvidedDelegate& a,
72 const ProvidedDelegateList::ProvidedDelegate& b) {
73 return a.rank < b.rank;
74 });
75
76 return delegates;
77 }
78
79 } // namespace tools
80 } // namespace tflite
81