webrtc/modules/audio_mixer/audio_frame_manipulator.h

/*
 *  Copyright (c) 2011 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_MIXER_AUDIO_FRAME_MANIPULATOR_H_
#define WEBRTC_MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_

#include "webrtc/typedefs.h"

namespace webrtc {
class AudioFrame;

// Updates the audioFrame's energy (based on its samples).
uint32_t NewMixerCalculateEnergy(const AudioFrame& audio_frame);

// Apply linear step function that ramps in/out the audio samples in audio_frame
void NewMixerRampIn(AudioFrame* audio_frame);
void NewMixerRampOut(AudioFrame* audio_frame);

}  // namespace webrtc

#endif  // WEBRTC_MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_