Index: webrtc/modules/congestion_controller/acknowledge_bitrate_estimator.h |
diff --git a/webrtc/modules/congestion_controller/acknowledge_bitrate_estimator.h b/webrtc/modules/congestion_controller/acknowledge_bitrate_estimator.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7a9d669a1cb6a5473f99d77d30152cacc71e4955 |
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+++ b/webrtc/modules/congestion_controller/acknowledge_bitrate_estimator.h |
@@ -0,0 +1,48 @@ |
+/* |
+ * 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_CONGESTION_CONTROLLER_ACKNOWLEDGE_BITRATE_ESTIMATOR_H_ |
+#define WEBRTC_MODULES_CONGESTION_CONTROLLER_ACKNOWLEDGE_BITRATE_ESTIMATOR_H_ |
+ |
+#include <vector> |
+ |
+#include "webrtc/base/optional.h" |
+ |
+namespace webrtc { |
+ |
+struct PacketFeedback; |
+ |
+// Computes a bayesian estimate of the throughput given acks containing |
+// the arrival time and payload size. Samples which are far from the current |
+// estimate or are based on few packets are given a smaller weight, as they |
+// are considered to be more likely to have been caused by, e.g., delay spikes |
+// unrelated to congestion. |
+class AcknowledgedBitrateEstimator { |
+ public: |
+ AcknowledgedBitrateEstimator(); |
+ |
+ void IncomingPacketFeedbackVector( |
+ const std::vector<PacketFeedback>& packet_feedback_vector); |
+ rtc::Optional<uint32_t> bitrate_bps() const; |
+ |
+ private: |
+ void Update(int64_t now_ms, int bytes); |
+ float UpdateWindow(int64_t now_ms, int bytes, int rate_window_ms); |
+ |
+ int sum_; |
+ int64_t current_win_ms_; |
+ int64_t prev_time_ms_; |
+ float bitrate_estimate_; |
+ float bitrate_estimate_var_; |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_MODULES_CONGESTION_CONTROLLER_ACKNOWLEDGE_BITRATE_ESTIMATOR_H_ |