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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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56 bool RemoveSource(Source* audio_source) override; | 56 bool RemoveSource(Source* audio_source) override; |
57 | 57 |
58 void Mix(size_t number_of_channels, | 58 void Mix(size_t number_of_channels, |
59 AudioFrame* audio_frame_for_mixing) override LOCKS_EXCLUDED(crit_); | 59 AudioFrame* audio_frame_for_mixing) override LOCKS_EXCLUDED(crit_); |
60 | 60 |
61 // Returns true if the source was mixed last round. Returns | 61 // Returns true if the source was mixed last round. Returns |
62 // false and logs an error if the source was never added to the | 62 // false and logs an error if the source was never added to the |
63 // mixer. | 63 // mixer. |
64 bool GetAudioSourceMixabilityStatusForTest(Source* audio_source) const; | 64 bool GetAudioSourceMixabilityStatusForTest(Source* audio_source) const; |
65 | 65 |
| 66 // Returns true if a source has been added but not removed. |
| 67 bool GetSourcePresenceStatusForTest(Source* audio_source) const; |
| 68 |
66 protected: | 69 protected: |
67 explicit AudioMixerImpl(std::unique_ptr<AudioProcessing> limiter); | 70 explicit AudioMixerImpl(std::unique_ptr<AudioProcessing> limiter); |
68 | 71 |
69 private: | 72 private: |
70 // Set/get mix frequency | 73 // Set/get mix frequency |
71 void SetOutputFrequency(int frequency); | 74 void SetOutputFrequency(int frequency); |
72 int OutputFrequency() const; | 75 int OutputFrequency() const; |
73 | 76 |
74 // Compute what audio sources to mix from audio_source_list_. Ramp | 77 // Compute what audio sources to mix from audio_source_list_. Ramp |
75 // in and out. Update mixed status. Mixes up to | 78 // in and out. Update mixed status. Mixes up to |
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105 uint32_t time_stamp_ GUARDED_BY(race_checker_); | 108 uint32_t time_stamp_ GUARDED_BY(race_checker_); |
106 | 109 |
107 // Used for inhibiting saturation in mixing. | 110 // Used for inhibiting saturation in mixing. |
108 std::unique_ptr<AudioProcessing> limiter_ GUARDED_BY(race_checker_); | 111 std::unique_ptr<AudioProcessing> limiter_ GUARDED_BY(race_checker_); |
109 | 112 |
110 RTC_DISALLOW_COPY_AND_ASSIGN(AudioMixerImpl); | 113 RTC_DISALLOW_COPY_AND_ASSIGN(AudioMixerImpl); |
111 }; | 114 }; |
112 } // namespace webrtc | 115 } // namespace webrtc |
113 | 116 |
114 #endif // WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_IMPL_H_ | 117 #endif // WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_IMPL_H_ |
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