aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 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 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 11 | #ifndef MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_ |
| 12 | #define MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_ |
aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 13 | |
Yves Gerey | 3e70781 | 2018-11-28 16:47:49 +0100 | [diff] [blame] | 14 | #include <stddef.h> |
| 15 | #include <stdint.h> |
| 16 | |
Fredrik Solenberg | bbf21a3 | 2018-04-12 22:44:09 +0200 | [diff] [blame] | 17 | #include "api/audio/audio_frame.h" |
aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 18 | |
| 19 | namespace webrtc { |
aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 20 | |
| 21 | // Updates the audioFrame's energy (based on its samples). |
aleloi | 3654251 | 2016-10-07 05:28:32 -0700 | [diff] [blame] | 22 | uint32_t AudioMixerCalculateEnergy(const AudioFrame& audio_frame); |
aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 23 | |
aleloi | 4b8bfb8 | 2016-10-12 02:14:59 -0700 | [diff] [blame] | 24 | // Ramps up or down the provided audio frame. Ramp(0, 1, frame) will |
| 25 | // linearly increase the samples in the frame from 0 to full volume. |
| 26 | void Ramp(float start_gain, float target_gain, AudioFrame* audio_frame); |
aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 27 | |
aleloi | e891415 | 2016-10-11 06:18:31 -0700 | [diff] [blame] | 28 | // Downmixes or upmixes a frame between stereo and mono. |
| 29 | void RemixFrame(size_t target_number_of_channels, AudioFrame* frame); |
| 30 | |
aleloi | 5bcc00e | 2016-08-15 03:01:31 -0700 | [diff] [blame] | 31 | } // namespace webrtc |
| 32 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 33 | #endif // MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_ |