Structure of BBR's implementation,some main classes and functions which are going to be used

webrtc/modules/remote_bitrate_estimator/test/estimators/max_bandwidth_filter.h

+/*
+ *  Copyright (c) 2017 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_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_ESTIMATORS_MAX_BANDWIDTH_FILTER_H_
+#define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_ESTIMATORS_MAX_BANDWIDTH_FILTER_H_
+
+#include <climits>
+#include <list>
+#include <map>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "webrtc/logging/rtc_event_log/mock/mock_rtc_event_log.h"
+#include "webrtc/modules/remote_bitrate_estimator/include/send_time_history.h"
+#include "webrtc/modules/remote_bitrate_estimator/test/bwe.h"
+
+namespace webrtc {
+namespace testing {
+namespace bwe {
+class MaxBandwidthFilter {
+ public:
+  MaxBandwidthFilter();
+  ~MaxBandwidthFilter();
+  int64_t max_bandwidth_estimate();
+
+  // Save bandwidth sample for the current round.
+  // We save bandwidth samples for past 10 rounds to
+  // provide better bandwidth estimate.
+
+  void AddBandwidthSample(int64_t round);
+
+  // Check if bandwidth has grown by certain multiplier for past x rounds,
+  // to decide whether or not delivery rate plateaued.
+  bool DeliveryRateGrows();
+};
+}  // namespace bwe
+}  // namespace testing
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_ESTIMATORS_MAX_BANDWIDTH_FILTER_H_