1 /* 2 * Copyright (c) 2012 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_TOOLS_AGC_TEST_UTILS_H_ 12 #define WEBRTC_TOOLS_AGC_TEST_UTILS_H_ 13 namespace webrtc { 14 15 class AudioFrame; 16 17 float MicLevel2Gain(int gain_range_db, int level); 18 float Db2Linear(float db); 19 void ApplyGainLinear(float gain, float last_gain, AudioFrame* frame); 20 void ApplyGain(float gain_db, float last_gain_db, AudioFrame* frame); 21 void SimulateMic(int gain_range_db, int mic_level, int last_mic_level, 22 AudioFrame* frame); 23 void SimulateMic(int gain_map[255], int mic_level, int last_mic_level, 24 AudioFrame* frame); 25 26 } // namespace webrtc 27 28 #endif // WEBRTC_TOOLS_AGC_TEST_UTILS_H_ 29