Reland of Merge webrtc/video_engine/ into webrtc/video/

webrtc/video_engine/vie_remb.h

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