webrtc/modules/audio_processing/level_controller/gain_applier.h
Sam Zackrisson 52f8188f5d Revert "Deprecate the adaptive level controller"
This reverts commit 6f37ed78d9.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Deprecate the adaptive level controller
> 
> Level control handled by default-on AGC.
> 
> Bug: none
> Change-Id: I405daeceece12c896d41156b649fcfd556726f77
> Reviewed-on: https://webrtc-review.googlesource.com/59682
> Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
> Reviewed-by: Alex Loiko <aleloi@webrtc.org>
> Commit-Queue: Sam Zackrisson <saza@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#22305}

TBR=solenberg@webrtc.org,saza@webrtc.org,aleloi@webrtc.org

Change-Id: Ic52f41fcbebfd2291a51b17ac788313e1ceef163
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: none
Reviewed-on: https://webrtc-review.googlesource.com/60240
Reviewed-by: Sam Zackrisson <saza@webrtc.org>
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22308}
2018-03-06 11:54:22 +00:00

42 lines
1.3 KiB
C++

/*
* 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_LEVEL_CONTROLLER_GAIN_APPLIER_H_
#define MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_GAIN_APPLIER_H_
#include "rtc_base/constructormagic.h"
namespace webrtc {
class ApmDataDumper;
class AudioBuffer;
class GainApplier {
public:
explicit GainApplier(ApmDataDumper* data_dumper);
void Initialize(int sample_rate_hz);
// Applies the specified gain to the audio frame and returns the resulting
// number of saturated sample values.
int Process(float new_gain, AudioBuffer* audio);
private:
ApmDataDumper* const data_dumper_;
float old_gain_ = 1.f;
float gain_increase_step_size_ = 0.f;
float gain_normal_decrease_step_size_ = 0.f;
float gain_saturated_decrease_step_size_ = 0.f;
bool last_frame_was_saturated_;
RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(GainApplier);
};
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_GAIN_APPLIER_H_