|  | /* | 
|  | *  Copyright (c) 2020 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 <memory> | 
|  |  | 
|  | #include "api/make_ref_counted.h" | 
|  | #include "modules/audio_processing/audio_processing_impl.h" | 
|  | #include "modules/audio_processing/include/audio_processing.h" | 
|  |  | 
|  | namespace webrtc { | 
|  |  | 
|  | AudioProcessingBuilder::AudioProcessingBuilder() = default; | 
|  | AudioProcessingBuilder::~AudioProcessingBuilder() = default; | 
|  |  | 
|  | rtc::scoped_refptr<AudioProcessing> AudioProcessingBuilder::Create() { | 
|  | #ifdef WEBRTC_EXCLUDE_AUDIO_PROCESSING_MODULE | 
|  | // Return a null pointer when the APM is excluded from the build. | 
|  | return nullptr; | 
|  | #else  // WEBRTC_EXCLUDE_AUDIO_PROCESSING_MODULE | 
|  | return rtc::make_ref_counted<AudioProcessingImpl>( | 
|  | config_, std::move(capture_post_processing_), | 
|  | std::move(render_pre_processing_), std::move(echo_control_factory_), | 
|  | std::move(echo_detector_), std::move(capture_analyzer_)); | 
|  | #endif | 
|  | } | 
|  |  | 
|  | }  // namespace webrtc |