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Diffstat (limited to 'third_party/libwebrtc/modules/remote_bitrate_estimator/overuse_detector.h')
-rw-r--r-- | third_party/libwebrtc/modules/remote_bitrate_estimator/overuse_detector.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/remote_bitrate_estimator/overuse_detector.h b/third_party/libwebrtc/modules/remote_bitrate_estimator/overuse_detector.h new file mode 100644 index 0000000000..444e8eece5 --- /dev/null +++ b/third_party/libwebrtc/modules/remote_bitrate_estimator/overuse_detector.h @@ -0,0 +1,54 @@ +/* + * 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 MODULES_REMOTE_BITRATE_ESTIMATOR_OVERUSE_DETECTOR_H_ +#define MODULES_REMOTE_BITRATE_ESTIMATOR_OVERUSE_DETECTOR_H_ + +#include <stdint.h> + +#include "api/network_state_predictor.h" + +namespace webrtc { + +class OveruseDetector { + public: + OveruseDetector(); + + OveruseDetector(const OveruseDetector&) = delete; + OveruseDetector& operator=(const OveruseDetector&) = delete; + + ~OveruseDetector() = default; + + // Update the detection state based on the estimated inter-arrival time delta + // offset. `timestamp_delta` is the delta between the last timestamp which the + // estimated offset is based on and the last timestamp on which the last + // offset was based on, representing the time between detector updates. + // `num_of_deltas` is the number of deltas the offset estimate is based on. + // Returns the state after the detection update. + BandwidthUsage Detect(double offset, + double timestamp_delta, + int num_of_deltas, + int64_t now_ms); + + // Returns the current detector state. + BandwidthUsage State() const; + + private: + void UpdateThreshold(double modified_offset, int64_t now_ms); + + double threshold_ = 12.5; + int64_t last_update_ms_ = -1; + double prev_offset_ = 0.0; + double time_over_using_ = -1; + int overuse_counter_ = 0; + BandwidthUsage hypothesis_ = BandwidthUsage::kBwNormal; +}; +} // namespace webrtc + +#endif // MODULES_REMOTE_BITRATE_ESTIMATOR_OVERUSE_DETECTOR_H_ |