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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 |
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| 38 first_call_(true), | 38 first_call_(true), |
| 39 overlap_length_(5 * fs_hz_ / 8000), | 39 overlap_length_(5 * fs_hz_ / 8000), |
| 40 decoder_database_(decoder_database), | 40 decoder_database_(decoder_database), |
| 41 sync_buffer_(sync_buffer) { | 41 sync_buffer_(sync_buffer) { |
| 42 } | 42 } |
| 43 | 43 |
| 44 // Resets the state. Should be called before each new comfort noise period. | 44 // Resets the state. Should be called before each new comfort noise period. |
| 45 void Reset(); | 45 void Reset(); |
| 46 | 46 |
| 47 // Update the comfort noise generator with the parameters in |packet|. | 47 // Update the comfort noise generator with the parameters in |packet|. |
| 48 // Will delete the packet. | 48 int UpdateParameters(const Packet& packet); |
| 49 int UpdateParameters(Packet* packet); | |
| 50 | 49 |
| 51 // Generates |requested_length| samples of comfort noise and writes to | 50 // Generates |requested_length| samples of comfort noise and writes to |
| 52 // |output|. If this is the first in call after Reset (or first after creating | 51 // |output|. If this is the first in call after Reset (or first after creating |
| 53 // the object), it will also mix in comfort noise at the end of the | 52 // the object), it will also mix in comfort noise at the end of the |
| 54 // SyncBuffer object provided in the constructor. | 53 // SyncBuffer object provided in the constructor. |
| 55 int Generate(size_t requested_length, AudioMultiVector* output); | 54 int Generate(size_t requested_length, AudioMultiVector* output); |
| 56 | 55 |
| 57 // Returns the last error code that was produced by the comfort noise | 56 // Returns the last error code that was produced by the comfort noise |
| 58 // decoder. Returns 0 if no error has been encountered since the last reset. | 57 // decoder. Returns 0 if no error has been encountered since the last reset. |
| 59 int internal_error_code() { return internal_error_code_; } | 58 int internal_error_code() { return internal_error_code_; } |
| 60 | 59 |
| 61 private: | 60 private: |
| 62 int fs_hz_; | 61 int fs_hz_; |
| 63 bool first_call_; | 62 bool first_call_; |
| 64 size_t overlap_length_; | 63 size_t overlap_length_; |
| 65 DecoderDatabase* decoder_database_; | 64 DecoderDatabase* decoder_database_; |
| 66 SyncBuffer* sync_buffer_; | 65 SyncBuffer* sync_buffer_; |
| 67 int internal_error_code_; | 66 int internal_error_code_; |
| 68 RTC_DISALLOW_COPY_AND_ASSIGN(ComfortNoise); | 67 RTC_DISALLOW_COPY_AND_ASSIGN(ComfortNoise); |
| 69 }; | 68 }; |
| 70 | 69 |
| 71 } // namespace webrtc | 70 } // namespace webrtc |
| 72 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_COMFORT_NOISE_H_ | 71 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_COMFORT_NOISE_H_ |
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