Move src/ -> webrtc/

TBR=niklas.enbom@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/915006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2963 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/bitrate_controller/include/bitrate_controller.h

@@ -0,0 +1,66 @@
+/*
+ *  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.
+ *
+ *  Usage: this class will register multiple RtcpBitrateObserver's one at each
+ *  RTCP module. It will aggregate the results and run one bandwidth estimation
+ *  and push the result to the encoders via BitrateObserver(s).
+ */
+
+#ifndef WEBRTC_MODULES_BITRATE_CONTROLLER_INCLUDE_BITRATE_CONTROLLER_H_
+#define WEBRTC_MODULES_BITRATE_CONTROLLER_INCLUDE_BITRATE_CONTROLLER_H_
+
+#include "modules/rtp_rtcp/interface/rtp_rtcp_defines.h"
+
+namespace webrtc {
+
+class BitrateObserver {
+ /*
+  * Observer class for the encoders, each encoder should implement this class
+  * to get the target bitrate. It also get the fraction loss and rtt to
+  * optimize its settings for this type of network.
+  */
+ public:
+  virtual void OnNetworkChanged(const uint32_t targer_bitrate,
+                                const uint8_t fraction_loss,  // 0 - 255.
+                                const uint32_t rtt) = 0;
+
+  virtual ~BitrateObserver() {}
+};
+
+class BitrateController {
+/*
+ * This class collects feedback from all streams sent to a peer (via
+ * RTCPBandwidthObservers). It does one  aggregated send side bandwidth
+ * estimation and divide the available bitrate between all its registered
+ * BitrateObservers.
+ */
+ public:
+  static BitrateController* CreateBitrateController();
+  virtual ~BitrateController() {}
+
+  virtual RtcpBandwidthObserver* CreateRtcpBandwidthObserver() = 0;
+
+  virtual bool AvailableBandwidth(uint32_t* bandwidth) const = 0;
+
+  /*
+  *  Set the start and max send bitrate used by the bandwidth management.
+  *
+  *  observer, updates bitrates if already in use.
+  *  min_bitrate_kbit = 0 equals no min bitrate.
+  *  max_bitrate_kit = 0 equals no max bitrate.
+  */
+  virtual void SetBitrateObserver(BitrateObserver* observer,
+                                  const uint32_t start_bitrate,
+                                  const uint32_t min_bitrate,
+                                  const uint32_t max_bitrate) = 0;
+
+  virtual void RemoveBitrateObserver(BitrateObserver* observer) = 0;
+};
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_BITRATE_CONTROLLER_INCLUDE_BITRATE_CONTROLLER_H_