blob: c74d39d6fb1649ab5e948874a0e2c0771efedd19 (
plain)
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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ANDROID_NET_EXTERNAL_ESTIMATE_PROVIDER_ANDROID_H_
#define CHROME_BROWSER_ANDROID_NET_EXTERNAL_ESTIMATE_PROVIDER_ANDROID_H_
#include <jni.h>
#include <stdint.h>
#include "base/android/scoped_java_ref.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/thread_task_runner_handle.h"
#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "net/base/external_estimate_provider.h"
#include "net/base/network_change_notifier.h"
namespace chrome {
namespace android {
// Native class that calls Java code exposed by
// ExternalEstimateProviderAndroidHelper.java. Provides network quality
// estimates as provided by Android. Estimates are automatically updated on a
// network change event.
class ExternalEstimateProviderAndroid
: public net::NetworkChangeNotifier::ConnectionTypeObserver,
public net::ExternalEstimateProvider {
public:
// Constructs and initializes the underlying provider.
ExternalEstimateProviderAndroid();
~ExternalEstimateProviderAndroid() override;
// net::ExternalEstimateProvider implementation:
bool GetRTT(base::TimeDelta* rtt) const override;
bool GetDownstreamThroughputKbps(
int32_t* downstream_throughput_kbps) const override;
bool GetUpstreamThroughputKbps(
int32_t* upstream_throughput_kbps) const override;
bool GetTimeSinceLastUpdate(
base::TimeDelta* time_since_last_update) const override;
void SetUpdatedEstimateDelegate(
net::ExternalEstimateProvider::UpdatedEstimateDelegate* delegate)
override;
void Update() const override;
// NetworkChangeNotifier::ConnectionTypeObserver implementation.
void OnConnectionTypeChanged(
net::NetworkChangeNotifier::ConnectionType type) override;
// Called by Java when the external estimate provider has an updated value.
// This may be called on a thread different from |task_runner_|.
void NotifyExternalEstimateProviderAndroidUpdate(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj);
protected:
// Notifies the delegate that a new update to external estimate is available.
// Protected for testing.
void NotifyUpdatedEstimateAvailable() const;
private:
// Value returned if valid value is unavailable.
int32_t no_value_ = -1;
base::android::ScopedJavaGlobalRef<jobject> j_external_estimate_provider_;
// Used to post tasks back to this object's origin thread.
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
// Notified every time there is an update available from the network quality
// provider.
net::ExternalEstimateProvider::UpdatedEstimateDelegate* delegate_;
base::ThreadChecker thread_checker_;
base::WeakPtrFactory<ExternalEstimateProviderAndroid> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ExternalEstimateProviderAndroid);
};
bool RegisterExternalEstimateProviderAndroid(JNIEnv* env);
} // namespace android
} // namespace chrome
#endif // CHROME_BROWSER_ANDROID_NET_EXTERNAL_ESTIMATE_PROVIDER_ANDROID_H_
|
