1/*
2 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
12#include "webrtc/system_wrappers/interface/tick_util.h"
13#include "webrtc/voice_engine/monitor_module.h"
14
15namespace webrtc  {
16
17namespace voe  {
18
19MonitorModule::MonitorModule() :
20    _observerPtr(NULL),
21    _callbackCritSect(*CriticalSectionWrapper::CreateCriticalSection()),
22    _lastProcessTime(TickTime::MillisecondTimestamp())
23{
24}
25
26MonitorModule::~MonitorModule()
27{
28    delete &_callbackCritSect;
29}
30
31int32_t
32MonitorModule::RegisterObserver(MonitorObserver& observer)
33{
34    CriticalSectionScoped lock(&_callbackCritSect);
35    if (_observerPtr)
36    {
37        return -1;
38    }
39    _observerPtr = &observer;
40    return 0;
41}
42
43int32_t
44MonitorModule::DeRegisterObserver()
45{
46    CriticalSectionScoped lock(&_callbackCritSect);
47    if (!_observerPtr)
48    {
49        return 0;
50    }
51    _observerPtr = NULL;
52    return 0;
53}
54
55int32_t
56MonitorModule::ChangeUniqueId(int32_t id)
57{
58    return 0;
59}
60
61int32_t
62MonitorModule::TimeUntilNextProcess()
63{
64    uint32_t now = TickTime::MillisecondTimestamp();
65    int32_t timeToNext =
66        kAverageProcessUpdateTimeMs - (now - _lastProcessTime);
67    return (timeToNext);
68}
69
70int32_t
71MonitorModule::Process()
72{
73    _lastProcessTime = TickTime::MillisecondTimestamp();
74    if (_observerPtr)
75    {
76        CriticalSectionScoped lock(&_callbackCritSect);
77        _observerPtr->OnPeriodicProcess();
78    }
79    return 0;
80}
81
82}  // namespace voe
83
84}  // namespace webrtc
85