blob: 33e26c1e0a1134f47bee9b8329a730079e049e9f [file] [log] [blame]
* 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.
#include "webrtc/rtc_base/constructormagic.h"
namespace webrtc {
class ApmDataDumper;
class AudioBuffer;
class GainApplier {
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);
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_;
} // namespace webrtc