1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_AUDIO_FRAME_MANIPULATOR_H_ 12 #define WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_AUDIO_FRAME_MANIPULATOR_H_ 13 14 namespace webrtc { 15 class AudioFrame; 16 17 // Updates the audioFrame's energy (based on its samples). 18 void CalculateEnergy(AudioFrame& audioFrame); 19 20 // Apply linear step function that ramps in/out the audio samples in audioFrame 21 void RampIn(AudioFrame& audioFrame); 22 void RampOut(AudioFrame& audioFrame); 23 24 } // namespace webrtc 25 26 #endif // WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_AUDIO_FRAME_MANIPULATOR_H_ 27