79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
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/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_VIDEO_VIE_REMB_H_
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#define WEBRTC_VIDEO_VIE_REMB_H_
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#include <list>
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#include <utility>
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#include <vector>
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#include "webrtc/base/criticalsection.h"
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#include "webrtc/modules/include/module.h"
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#include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
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#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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namespace webrtc {
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class ProcessThread;
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class RtpRtcp;
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class VieRemb : public RemoteBitrateObserver {
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public:
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explicit VieRemb(Clock* clock);
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~VieRemb();
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// Called to add a receive channel to include in the REMB packet.
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void AddReceiveChannel(RtpRtcp* rtp_rtcp);
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// Removes the specified channel from REMB estimate.
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void RemoveReceiveChannel(RtpRtcp* rtp_rtcp);
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// Called to add a module that can generate and send REMB RTCP.
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void AddRembSender(RtpRtcp* rtp_rtcp);
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// Removes a REMB RTCP sender.
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void RemoveRembSender(RtpRtcp* rtp_rtcp);
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// Returns true if the instance is in use, false otherwise.
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bool InUse() const;
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// Called every time there is a new bitrate estimate for a receive channel
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// group. This call will trigger a new RTCP REMB packet if the bitrate
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// estimate has decreased or if no RTCP REMB packet has been sent for
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// a certain time interval.
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// Implements RtpReceiveBitrateUpdate.
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virtual void OnReceiveBitrateChanged(const std::vector<uint32_t>& ssrcs,
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uint32_t bitrate);
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private:
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typedef std::list<RtpRtcp*> RtpModules;
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Clock* const clock_;
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rtc::CriticalSection list_crit_;
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// The last time a REMB was sent.
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int64_t last_remb_time_;
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uint32_t last_send_bitrate_;
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// All RtpRtcp modules to include in the REMB packet.
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RtpModules receive_modules_;
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// All modules that can send REMB RTCP.
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RtpModules rtcp_sender_;
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// The last bitrate update.
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uint32_t bitrate_;
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};
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} // namespace webrtc
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#endif // WEBRTC_VIDEO_VIE_REMB_H_
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