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/*
* Copyright (c) 2016 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_BLOCK_PROCESSOR_H_
#define MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_
#include <stddef.h>
#include <memory>
#include <vector>
#include "api/audio/echo_canceller3_config.h"
#include "api/audio/echo_control.h"
#include "api/environment/environment.h"
#include "modules/audio_processing/aec3/block.h"
#include "modules/audio_processing/aec3/echo_remover.h"
#include "modules/audio_processing/aec3/render_delay_buffer.h"
#include "modules/audio_processing/aec3/render_delay_controller.h"
namespace webrtc {
// Class for performing echo cancellation on 64 sample blocks of audio data.
class BlockProcessor {
public:
static std::unique_ptr<BlockProcessor> Create(
const Environment& env,
const EchoCanceller3Config& config,
int sample_rate_hz,
size_t num_render_channels,
size_t num_capture_channels);
// Only used for testing purposes.
static std::unique_ptr<BlockProcessor> Create(
const Environment& env,
const EchoCanceller3Config& config,
int sample_rate_hz,
size_t num_render_channels,
size_t num_capture_channels,
std::unique_ptr<RenderDelayBuffer> render_buffer);
static std::unique_ptr<BlockProcessor> Create(
const EchoCanceller3Config& config,
int sample_rate_hz,
size_t num_render_channels,
size_t num_capture_channels,
std::unique_ptr<RenderDelayBuffer> render_buffer,
std::unique_ptr<RenderDelayController> delay_controller,
std::unique_ptr<EchoRemover> echo_remover);
virtual ~BlockProcessor() = default;
// Get current metrics.
virtual void GetMetrics(EchoControl::Metrics* metrics) const = 0;
// Provides an optional external estimate of the audio buffer delay.
virtual void SetAudioBufferDelay(int delay_ms) = 0;
// Processes a block of capture data.
virtual void ProcessCapture(bool echo_path_gain_change,
bool capture_signal_saturation,
Block* linear_output,
Block* capture_block) = 0;
// Buffers a block of render data supplied by a FrameBlocker object.
virtual void BufferRender(const Block& render_block) = 0;
// Reports whether echo leakage has been detected in the echo canceller
// output.
virtual void UpdateEchoLeakageStatus(bool leakage_detected) = 0;
// Specifies whether the capture output will be used. The purpose of this is
// to allow the block processor to deactivate some of the processing when the
// resulting output is anyway not used, for instance when the endpoint is
// muted.
virtual void SetCaptureOutputUsage(bool capture_output_used) = 0;
};
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_
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