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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 #ifndef WEBRTC_VIDEO_VIE_REMB_H_ | |
12 #define WEBRTC_VIDEO_VIE_REMB_H_ | |
13 | |
14 #include <list> | |
15 #include <utility> | |
16 #include <vector> | |
17 | |
18 #include "webrtc/base/criticalsection.h" | |
19 #include "webrtc/modules/include/module.h" | |
20 #include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimat
or.h" | |
21 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | |
22 | |
23 namespace webrtc { | |
24 | |
25 class ProcessThread; | |
26 class RtpRtcp; | |
27 | |
28 class VieRemb : public RemoteBitrateObserver { | |
29 public: | |
30 explicit VieRemb(Clock* clock); | |
31 ~VieRemb(); | |
32 | |
33 // Called to add a receive channel to include in the REMB packet. | |
34 void AddReceiveChannel(RtpRtcp* rtp_rtcp); | |
35 | |
36 // Removes the specified channel from REMB estimate. | |
37 void RemoveReceiveChannel(RtpRtcp* rtp_rtcp); | |
38 | |
39 // Called to add a module that can generate and send REMB RTCP. | |
40 void AddRembSender(RtpRtcp* rtp_rtcp); | |
41 | |
42 // Removes a REMB RTCP sender. | |
43 void RemoveRembSender(RtpRtcp* rtp_rtcp); | |
44 | |
45 // Returns true if the instance is in use, false otherwise. | |
46 bool InUse() const; | |
47 | |
48 // Called every time there is a new bitrate estimate for a receive channel | |
49 // group. This call will trigger a new RTCP REMB packet if the bitrate | |
50 // estimate has decreased or if no RTCP REMB packet has been sent for | |
51 // a certain time interval. | |
52 // Implements RtpReceiveBitrateUpdate. | |
53 virtual void OnReceiveBitrateChanged(const std::vector<uint32_t>& ssrcs, | |
54 uint32_t bitrate); | |
55 | |
56 private: | |
57 typedef std::list<RtpRtcp*> RtpModules; | |
58 | |
59 Clock* const clock_; | |
60 rtc::CriticalSection list_crit_; | |
61 | |
62 // The last time a REMB was sent. | |
63 int64_t last_remb_time_; | |
64 uint32_t last_send_bitrate_; | |
65 | |
66 // All RtpRtcp modules to include in the REMB packet. | |
67 RtpModules receive_modules_; | |
68 | |
69 // All modules that can send REMB RTCP. | |
70 RtpModules rtcp_sender_; | |
71 | |
72 // The last bitrate update. | |
73 uint32_t bitrate_; | |
74 }; | |
75 | |
76 } // namespace webrtc | |
77 | |
78 #endif // WEBRTC_VIDEO_VIE_REMB_H_ | |
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