blob: 00a0d80d4105ca4f22a72ed1ed2ecff0a69b8fa7 [file] [log] [blame]
// 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_CAPTURE_DEVICE_MONITOR_UDEV_H_
#define MEDIA_CAPTURE_DEVICE_MONITOR_UDEV_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/single_thread_task_runner.h"
#include "media/base/media_export.h"
extern "C" {
struct udev_device;
}
namespace device {
class UdevLinux;
}
namespace media {
class MEDIA_EXPORT DeviceMonitorLinux
: public base::MessageLoop::DestructionObserver {
public:
explicit DeviceMonitorLinux(
const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
~DeviceMonitorLinux() override;
// TODO(mcasas): Consider adding a StartMonitoring() method like
// DeviceMonitorMac to reduce startup impact time.
private:
// This object is deleted on the constructor thread after |io_task_runner_|
// has been destroyed. Need to know when the latter is being destroyed so that
// we can delete |udev_|.
void WillDestroyCurrentMessageLoop() override;
void Initialize();
void OnDevicesChanged(udev_device* device);
const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
scoped_ptr<device::UdevLinux> udev_;
DISALLOW_COPY_AND_ASSIGN(DeviceMonitorLinux);
};
} // namespace media
#endif // MEDIA_CAPTURE_DEVICE_MONITOR_UDEV_H_