Update to current webrtc library

This is from the upstream library commit id 3326535126e435f1ba647885ce43a8f0f3d317eb, corresponding to Chromium 88.0.4290.1.
2020-10-12 18:08:02 -04:00
parent b1b02581d3
commit bcec8b0b21
859 changed files with 76187 additions and 49580 deletions
--- a/webrtc/modules/audio_processing/aec3/subband_erle_estimator.h
+++ b/webrtc/modules/audio_processing/aec3/subband_erle_estimator.h
@ -0,0 +1,93 @@
+/*
+ *  Copyright (c) 2018 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_AUDIO_PROCESSING_AEC3_SUBBAND_ERLE_ESTIMATOR_H_
+#define MODULES_AUDIO_PROCESSING_AEC3_SUBBAND_ERLE_ESTIMATOR_H_
+
+#include <stddef.h>
+
+#include <array>
+#include <memory>
+#include <vector>
+
+#include "api/array_view.h"
+#include "api/audio/echo_canceller3_config.h"
+#include "modules/audio_processing/aec3/aec3_common.h"
+#include "modules/audio_processing/logging/apm_data_dumper.h"
+
+namespace webrtc {
+
+// Estimates the echo return loss enhancement for each frequency subband.
+class SubbandErleEstimator {
+ public:
+  SubbandErleEstimator(const EchoCanceller3Config& config,
+                       size_t num_capture_channels);
+  ~SubbandErleEstimator();
+
+  // Resets the ERLE estimator.
+  void Reset();
+
+  // Updates the ERLE estimate.
+  void Update(rtc::ArrayView<const float, kFftLengthBy2Plus1> X2,
+              rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> Y2,
+              rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> E2,
+              const std::vector<bool>& converged_filters);
+
+  // Returns the ERLE estimate.
+  rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> Erle() const {
+    return erle_;
+  }
+
+  // Returns the ERLE estimate at onsets (only used for testing).
+  rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> ErleOnsets()
+      const {
+    return erle_onsets_;
+  }
+
+  void Dump(const std::unique_ptr<ApmDataDumper>& data_dumper) const;
+
+ private:
+  struct AccumulatedSpectra {
+    explicit AccumulatedSpectra(size_t num_capture_channels)
+        : Y2(num_capture_channels),
+          E2(num_capture_channels),
+          low_render_energy(num_capture_channels),
+          num_points(num_capture_channels) {}
+    std::vector<std::array<float, kFftLengthBy2Plus1>> Y2;
+    std::vector<std::array<float, kFftLengthBy2Plus1>> E2;
+    std::vector<std::array<bool, kFftLengthBy2Plus1>> low_render_energy;
+    std::vector<int> num_points;
+  };
+
+  void UpdateAccumulatedSpectra(
+      rtc::ArrayView<const float, kFftLengthBy2Plus1> X2,
+      rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> Y2,
+      rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> E2,
+      const std::vector<bool>& converged_filters);
+
+  void ResetAccumulatedSpectra();
+
+  void UpdateBands(const std::vector<bool>& converged_filters);
+  void DecreaseErlePerBandForLowRenderSignals();
+
+  const bool use_onset_detection_;
+  const float min_erle_;
+  const std::array<float, kFftLengthBy2Plus1> max_erle_;
+  const bool use_min_erle_during_onsets_;
+  AccumulatedSpectra accum_spectra_;
+  std::vector<std::array<float, kFftLengthBy2Plus1>> erle_;
+  std::vector<std::array<float, kFftLengthBy2Plus1>> erle_onsets_;
+  std::vector<std::array<bool, kFftLengthBy2Plus1>> coming_onset_;
+  std::vector<std::array<int, kFftLengthBy2Plus1>> hold_counters_;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_AUDIO_PROCESSING_AEC3_SUBBAND_ERLE_ESTIMATOR_H_