| /* |
| * 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_AUDIO_PROCESSING_AEC3_MATCHED_FILTER_LAG_AGGREGATOR_H_ |
| #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_MATCHED_FILTER_LAG_AGGREGATOR_H_ |
| |
| #include <vector> |
| |
| #include "webrtc/modules/audio_processing/aec3/matched_filter.h" |
| #include "webrtc/rtc_base/constructormagic.h" |
| #include "webrtc/rtc_base/optional.h" |
| |
| namespace webrtc { |
| |
| class ApmDataDumper; |
| |
| // Aggregates lag estimates produced by the MatchedFilter class into a single |
| // reliable combined lag estimate. |
| class MatchedFilterLagAggregator { |
| public: |
| MatchedFilterLagAggregator(ApmDataDumper* data_dumper, |
| size_t num_lag_estimates); |
| ~MatchedFilterLagAggregator(); |
| |
| // Resets the aggregator. |
| void Reset(); |
| |
| // Aggregates the provided lag estimates. |
| rtc::Optional<size_t> Aggregate( |
| rtc::ArrayView<const MatchedFilter::LagEstimate> lag_estimates); |
| |
| private: |
| ApmDataDumper* const data_dumper_; |
| std::vector<size_t> lag_updates_in_a_row_; |
| size_t candidate_ = 0; |
| size_t candidate_counter_ = 0; |
| |
| RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MatchedFilterLagAggregator); |
| }; |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_MATCHED_FILTER_LAG_AGGREGATOR_H_ |