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1 /* | |
2 * libjingle | |
3 * Copyright 2005 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 */ | |
27 | |
28 #include "talk/session/media/channelmanager.h" | |
29 #include "talk/session/media/mediamonitor.h" | |
30 #include "webrtc/base/common.h" | |
31 | |
32 namespace cricket { | |
33 | |
34 enum { | |
35 MSG_MONITOR_POLL = 1, | |
36 MSG_MONITOR_START = 2, | |
37 MSG_MONITOR_STOP = 3, | |
38 MSG_MONITOR_SIGNAL = 4 | |
39 }; | |
40 | |
41 MediaMonitor::MediaMonitor(rtc::Thread* worker_thread, | |
42 rtc::Thread* monitor_thread) | |
43 : worker_thread_(worker_thread), | |
44 monitor_thread_(monitor_thread), monitoring_(false), rate_(0) { | |
45 } | |
46 | |
47 MediaMonitor::~MediaMonitor() { | |
48 monitoring_ = false; | |
49 monitor_thread_->Clear(this); | |
50 worker_thread_->Clear(this); | |
51 } | |
52 | |
53 void MediaMonitor::Start(uint32_t milliseconds) { | |
54 rate_ = milliseconds; | |
55 if (rate_ < 100) | |
56 rate_ = 100; | |
57 worker_thread_->Post(this, MSG_MONITOR_START); | |
58 } | |
59 | |
60 void MediaMonitor::Stop() { | |
61 worker_thread_->Post(this, MSG_MONITOR_STOP); | |
62 rate_ = 0; | |
63 } | |
64 | |
65 void MediaMonitor::OnMessage(rtc::Message* message) { | |
66 rtc::CritScope cs(&crit_); | |
67 | |
68 switch (message->message_id) { | |
69 case MSG_MONITOR_START: | |
70 ASSERT(rtc::Thread::Current() == worker_thread_); | |
71 if (!monitoring_) { | |
72 monitoring_ = true; | |
73 PollMediaChannel(); | |
74 } | |
75 break; | |
76 | |
77 case MSG_MONITOR_STOP: | |
78 ASSERT(rtc::Thread::Current() == worker_thread_); | |
79 if (monitoring_) { | |
80 monitoring_ = false; | |
81 worker_thread_->Clear(this); | |
82 } | |
83 break; | |
84 | |
85 case MSG_MONITOR_POLL: | |
86 ASSERT(rtc::Thread::Current() == worker_thread_); | |
87 PollMediaChannel(); | |
88 break; | |
89 | |
90 case MSG_MONITOR_SIGNAL: | |
91 ASSERT(rtc::Thread::Current() == monitor_thread_); | |
92 Update(); | |
93 break; | |
94 } | |
95 } | |
96 | |
97 void MediaMonitor::PollMediaChannel() { | |
98 rtc::CritScope cs(&crit_); | |
99 ASSERT(rtc::Thread::Current() == worker_thread_); | |
100 | |
101 GetStats(); | |
102 | |
103 // Signal the monitoring thread, start another poll timer | |
104 monitor_thread_->Post(this, MSG_MONITOR_SIGNAL); | |
105 worker_thread_->PostDelayed(rate_, this, MSG_MONITOR_POLL); | |
106 } | |
107 | |
108 } | |
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