1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/media/learning_experiment_helper.h"
namespace blink {
using ::media::learning::FeatureDictionary;
using ::media::learning::FeatureVector;
using ::media::learning::LearningTaskController;
using ::media::learning::TargetValue;
LearningExperimentHelper::LearningExperimentHelper(
std::unique_ptr<LearningTaskController> controller)
: controller_(std::move(controller)) {}
LearningExperimentHelper::~LearningExperimentHelper() {
CancelObservationIfNeeded();
}
void LearningExperimentHelper::BeginObservation(
const FeatureDictionary& dictionary) {
if (!controller_)
return;
CancelObservationIfNeeded();
// Get the features that our task needs.
FeatureVector features;
dictionary.Lookup(controller_->GetLearningTask(), &features);
observation_id_ = base::UnguessableToken::Create();
controller_->BeginObservation(observation_id_, features);
}
void LearningExperimentHelper::CompleteObservationIfNeeded(
const TargetValue& target) {
if (!observation_id_)
return;
controller_->CompleteObservation(observation_id_, target);
observation_id_ = base::UnguessableToken::Null();
}
void LearningExperimentHelper::CancelObservationIfNeeded() {
if (!observation_id_)
return;
controller_->CancelObservation(observation_id_);
observation_id_ = base::UnguessableToken::Null();
}
} // namespace blink
|
