63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
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/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_H_
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#include <vector>
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#include "absl/types/optional.h"
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#include "api/audio/echo_canceller3_config.h"
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#include "api/audio/echo_control.h"
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#include "modules/audio_processing/aec3/block.h"
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#include "modules/audio_processing/aec3/delay_estimate.h"
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#include "modules/audio_processing/aec3/echo_path_variability.h"
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#include "modules/audio_processing/aec3/render_buffer.h"
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namespace webrtc {
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// Class for removing the echo from the capture signal.
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class EchoRemover {
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public:
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static EchoRemover* Create(const EchoCanceller3Config& config,
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int sample_rate_hz,
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size_t num_render_channels,
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size_t num_capture_channels);
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virtual ~EchoRemover() = default;
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// Get current metrics.
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virtual void GetMetrics(EchoControl::Metrics* metrics) const = 0;
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// Removes the echo from a block of samples from the capture signal. The
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// supplied render signal is assumed to be pre-aligned with the capture
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// signal.
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virtual void ProcessCapture(
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EchoPathVariability echo_path_variability,
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bool capture_signal_saturation,
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const absl::optional<DelayEstimate>& external_delay,
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RenderBuffer* render_buffer,
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Block* linear_output,
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Block* capture) = 0;
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// Updates the status on whether echo leakage is detected in the output of the
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// echo remover.
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virtual void UpdateEchoLeakageStatus(bool leakage_detected) = 0;
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// Specifies whether the capture output will be used. The purpose of this is
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// to allow the echo remover to deactivate some of the processing when the
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// resulting output is anyway not used, for instance when the endpoint is
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// muted.
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virtual void SetCaptureOutputUsage(bool capture_output_used) = 0;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_H_
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