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| 1 /* | 1 /* |
| 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
| 11 #include "webrtc/modules/audio_processing/agc/agc.h" | 11 #include "webrtc/modules/audio_processing/agc/agc.h" |
| 12 | 12 |
| 13 #include <cmath> | 13 #include <cmath> |
| 14 #include <cstdlib> | 14 #include <cstdlib> |
| 15 | 15 |
| 16 #include <algorithm> | 16 #include <algorithm> |
| 17 #include <vector> | 17 #include <vector> |
| 18 | 18 |
| 19 #include "webrtc/base/checks.h" | 19 #include "webrtc/base/checks.h" |
| 20 #include "webrtc/modules/audio_processing/agc/histogram.h" | 20 #include "webrtc/modules/audio_processing/agc/histogram.h" |
| 21 #include "webrtc/modules/audio_processing/agc/utility.h" | 21 #include "webrtc/modules/audio_processing/agc/utility.h" |
| 22 #include "webrtc/modules/interface/module_common_types.h" | 22 #include "webrtc/modules/include/module_common_types.h" |
| 23 | 23 |
| 24 namespace webrtc { | 24 namespace webrtc { |
| 25 namespace { | 25 namespace { |
| 26 | 26 |
| 27 const int kDefaultLevelDbfs = -18; | 27 const int kDefaultLevelDbfs = -18; |
| 28 const int kNumAnalysisFrames = 100; | 28 const int kNumAnalysisFrames = 100; |
| 29 const double kActivityThreshold = 0.3; | 29 const double kActivityThreshold = 0.3; |
| 30 | 30 |
| 31 } // namespace | 31 } // namespace |
| 32 | 32 |
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| 92 // limits. The upper limit should be chosen such that the risk of clipping is | 92 // limits. The upper limit should be chosen such that the risk of clipping is |
| 93 // low. The lower limit should not result in a too quiet signal. | 93 // low. The lower limit should not result in a too quiet signal. |
| 94 if (level >= 0 || level <= -100) | 94 if (level >= 0 || level <= -100) |
| 95 return -1; | 95 return -1; |
| 96 target_level_dbfs_ = level; | 96 target_level_dbfs_ = level; |
| 97 target_level_loudness_ = Dbfs2Loudness(level); | 97 target_level_loudness_ = Dbfs2Loudness(level); |
| 98 return 0; | 98 return 0; |
| 99 } | 99 } |
| 100 | 100 |
| 101 } // namespace webrtc | 101 } // namespace webrtc |
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