chromium/third_party/webrtc/modules/audio_processing/aec3/render_delay_controller.cc

/*
 *  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.
 */
#include "modules/audio_processing/aec3/render_delay_controller.h"

#include <stddef.h>

#include <algorithm>
#include <atomic>
#include <memory>

#include "absl/types/optional.h"
#include "api/array_view.h"
#include "api/audio/echo_canceller3_config.h"
#include "modules/audio_processing/aec3/aec3_common.h"
#include "modules/audio_processing/aec3/delay_estimate.h"
#include "modules/audio_processing/aec3/downsampled_render_buffer.h"
#include "modules/audio_processing/aec3/echo_path_delay_estimator.h"
#include "modules/audio_processing/aec3/render_delay_controller_metrics.h"
#include "modules/audio_processing/logging/apm_data_dumper.h"
#include "rtc_base/checks.h"

namespace webrtc {

namespace {

class RenderDelayControllerImpl final : public RenderDelayController { … };

DelayEstimate ComputeBufferDelay(
    const absl::optional<DelayEstimate>& current_delay,
    int hysteresis_limit_blocks,
    DelayEstimate estimated_delay) { … }

std::atomic<int> RenderDelayControllerImpl::instance_count_(0);

RenderDelayControllerImpl::RenderDelayControllerImpl(
    const EchoCanceller3Config& config,
    int sample_rate_hz,
    size_t num_capture_channels)
    : … { … }

RenderDelayControllerImpl::~RenderDelayControllerImpl() = default;

void RenderDelayControllerImpl::Reset(bool reset_delay_confidence) { … }

void RenderDelayControllerImpl::LogRenderCall() { … }

absl::optional<DelayEstimate> RenderDelayControllerImpl::GetDelay(
    const DownsampledRenderBuffer& render_buffer,
    size_t render_delay_buffer_delay,
    const Block& capture) { … }

bool RenderDelayControllerImpl::HasClockdrift() const { … }

}  // namespace

RenderDelayController* RenderDelayController::Create(
    const EchoCanceller3Config& config,
    int sample_rate_hz,
    size_t num_capture_channels) { … }

}  // namespace webrtc