Index: webrtc/modules/congestion_controller/incoming_bitrate_estimator.h |
diff --git a/webrtc/modules/congestion_controller/incoming_bitrate_estimator.h b/webrtc/modules/congestion_controller/incoming_bitrate_estimator.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..833aaa3341ad8de80fa5656c91c14ef632ac9638 |
--- /dev/null |
+++ b/webrtc/modules/congestion_controller/incoming_bitrate_estimator.h |
@@ -0,0 +1,40 @@ |
+/* |
+ * 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_INCOMING_BITRATE_ESTIMATOR_H_ |
+#define WEBRTC_MODULES_CONGESTION_CONTROLLER_INCOMING_BITRATE_ESTIMATOR_H_ |
+ |
+#include "webrtc/base/optional.h" |
+ |
+namespace webrtc { |
+ |
+// 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 IncomingBitrateEstimator { |
terelius
2017/06/01 15:15:04
I'd prefer not calling it incoming bitrate, since
tschumi
2017/06/02 11:48:44
Acknowledged.
|
+ public: |
+ IncomingBitrateEstimator(); |
+ void Update(int64_t now_ms, int bytes); |
+ rtc::Optional<uint32_t> bitrate_bps() const; |
+ |
+ private: |
+ 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_INCOMING_BITRATE_ESTIMATOR_H_ |