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1 /* | 1 /* |
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2011 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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60 enum {kDtmfAmpHigh = 32768}; | 60 enum {kDtmfAmpHigh = 32768}; |
61 enum {kDtmfAmpLow = 23171}; // 3 dB lower than the high frequency | 61 enum {kDtmfAmpLow = 23171}; // 3 dB lower than the high frequency |
62 | 62 |
63 int16_t DtmfFix_generateSignal(int16_t a1_times2, | 63 int16_t DtmfFix_generateSignal(int16_t a1_times2, |
64 int16_t a2_times2, | 64 int16_t a2_times2, |
65 int16_t volume, | 65 int16_t volume, |
66 int16_t* signal, | 66 int16_t* signal, |
67 int16_t length); | 67 int16_t length); |
68 | 68 |
69 private: | 69 private: |
70 mutable rtc::CriticalSection _critSect; | 70 rtc::CriticalSection _critSect; |
71 int32_t _id; | 71 int32_t _id; |
72 uint16_t _outputFrequencyHz; // {8000, 16000, 32000} | 72 uint16_t _outputFrequencyHz; // {8000, 16000, 32000} |
73 int16_t _oldOutputLow[2]; // Data needed for oscillator model | 73 int16_t _oldOutputLow[2]; // Data needed for oscillator model |
74 int16_t _oldOutputHigh[2]; // Data needed for oscillator model | 74 int16_t _oldOutputHigh[2]; // Data needed for oscillator model |
75 int16_t _frameLengthSamples; // {80, 160, 320} | 75 int16_t _frameLengthSamples; // {80, 160, 320} |
76 int32_t _remainingSamples; | 76 int32_t _remainingSamples; |
77 int16_t _eventCode; // [0, 15] | 77 int16_t _eventCode; // [0, 15] |
78 int16_t _attenuationDb; // [0, 36] | 78 int16_t _attenuationDb; // [0, 36] |
79 int32_t _lengthMs; | 79 int32_t _lengthMs; |
80 bool _reinit; // 'true' if the oscillator should be reinit for next event | 80 bool _reinit; // 'true' if the oscillator should be reinit for next event |
81 bool _playing; | 81 bool _playing; |
82 uint32_t _delaySinceLastToneMS; // time since last generated tone [ms] | 82 uint32_t _delaySinceLastToneMS; // time since last generated tone [ms] |
83 }; | 83 }; |
84 | 84 |
85 } // namespace webrtc | 85 } // namespace webrtc |
86 | 86 |
87 #endif // #ifndef WEBRTC_VOICE_ENGINE_DTMF_INBAND_H_ | 87 #endif // #ifndef WEBRTC_VOICE_ENGINE_DTMF_INBAND_H_ |
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