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/*
* Copyright (c) 2012 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_ECHO_CANCELLATION_IMPL_H_
#define WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CANCELLATION_IMPL_H_
#include "webrtc/base/criticalsection.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/common_audio/swap_queue.h"
#include "webrtc/modules/audio_processing/include/audio_processing.h"
#include "webrtc/modules/audio_processing/processing_component.h"
namespace webrtc {
class AudioBuffer;
class EchoCancellationImpl : public EchoCancellation,
public ProcessingComponent {
public:
EchoCancellationImpl(const AudioProcessing* apm,
rtc::CriticalSection* crit_render,
rtc::CriticalSection* crit_capture);
virtual ~EchoCancellationImpl();
int ProcessRenderAudio(const AudioBuffer* audio);
int ProcessCaptureAudio(AudioBuffer* audio);
// EchoCancellation implementation.
bool is_enabled() const override;
int stream_drift_samples() const override;
SuppressionLevel suppression_level() const override;
bool is_drift_compensation_enabled() const override;
// ProcessingComponent implementation.
int Initialize() override;
void SetExtraOptions(const Config& config) override;
bool is_delay_agnostic_enabled() const;
bool is_extended_filter_enabled() const;
// Reads render side data that has been queued on the render call.
// Called holding the capture lock.
void ReadQueuedRenderData();
private:
// EchoCancellation implementation.
int Enable(bool enable) override;
int enable_drift_compensation(bool enable) override;
void set_stream_drift_samples(int drift) override;
int set_suppression_level(SuppressionLevel level) override;
int enable_metrics(bool enable) override;
bool are_metrics_enabled() const override;
bool stream_has_echo() const override;
int GetMetrics(Metrics* metrics) override;
int enable_delay_logging(bool enable) override;
bool is_delay_logging_enabled() const override;
int GetDelayMetrics(int* median, int* std) override;
int GetDelayMetrics(int* median,
int* std,
float* fraction_poor_delays) override;
struct AecCore* aec_core() const override;
// ProcessingComponent implementation.
void* CreateHandle() const override;
int InitializeHandle(void* handle) const override;
int ConfigureHandle(void* handle) const override;
void DestroyHandle(void* handle) const override;
size_t num_handles_required() const override;
int GetHandleError(void* handle) const override;
void AllocateRenderQueue();
// Not guarded as its public API is thread safe.
const AudioProcessing* apm_;
rtc::CriticalSection* const crit_render_ ACQUIRED_BEFORE(crit_capture_);
rtc::CriticalSection* const crit_capture_;
bool drift_compensation_enabled_ GUARDED_BY(crit_capture_);
bool metrics_enabled_ GUARDED_BY(crit_capture_);
SuppressionLevel suppression_level_ GUARDED_BY(crit_capture_);
int stream_drift_samples_ GUARDED_BY(crit_capture_);
bool was_stream_drift_set_ GUARDED_BY(crit_capture_);
bool stream_has_echo_ GUARDED_BY(crit_capture_);
bool delay_logging_enabled_ GUARDED_BY(crit_capture_);
bool extended_filter_enabled_ GUARDED_BY(crit_capture_);
bool delay_agnostic_enabled_ GUARDED_BY(crit_capture_);
size_t render_queue_element_max_size_ GUARDED_BY(crit_render_)
GUARDED_BY(crit_capture_);
std::vector<float> render_queue_buffer_ GUARDED_BY(crit_render_);
std::vector<float> capture_queue_buffer_ GUARDED_BY(crit_capture_);
// Lock protection not needed.
rtc::scoped_ptr<SwapQueue<std::vector<float>, RenderQueueItemVerifier<float>>>
render_signal_queue_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CANCELLATION_IMPL_H_
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