blob: 270bbe7fdf34a4e37ae770d8c936368949f2a000 (
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
|
// Copyright 2013 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.
// This class is used to detect device change and notify base::SystemMonitor
// on Linux.
#ifndef MEDIA_DEVICE_MONITORS_DEVICE_MONITOR_UDEV_H_
#define MEDIA_DEVICE_MONITORS_DEVICE_MONITOR_UDEV_H_
#include <memory>
#include "base/macros.h"
#include "base/sequenced_task_runner.h"
#include "media/base/media_export.h"
namespace media {
class MEDIA_EXPORT DeviceMonitorLinux {
public:
DeviceMonitorLinux();
~DeviceMonitorLinux();
// TODO(mcasas): Consider adding a StartMonitoring() method like
// DeviceMonitorMac to reduce startup impact time.
private:
class BlockingTaskRunnerHelper;
// Task for running udev code that can potentially block.
const scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
// Holds the BlockingTaskRunnerHelper which runs tasks on
// |blocking_task_runner_|.
std::unique_ptr<BlockingTaskRunnerHelper, base::OnTaskRunnerDeleter>
blocking_task_helper_;
DISALLOW_COPY_AND_ASSIGN(DeviceMonitorLinux);
};
} // namespace media
#endif // MEDIA_DEVICE_MONITORS_DEVICE_MONITOR_UDEV_H_
|
