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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 |
11 #ifndef WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_DEFINES_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_DEFINES_H_ |
12 #define WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_DEFINES_H_ | 12 #define WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_DEFINES_H_ |
13 | 13 |
| 14 #include <memory> |
| 15 |
14 #include "webrtc/base/checks.h" | 16 #include "webrtc/base/checks.h" |
15 #include "webrtc/modules/include/module_common_types.h" | 17 #include "webrtc/modules/include/module_common_types.h" |
16 #include "webrtc/typedefs.h" | 18 #include "webrtc/typedefs.h" |
17 | 19 |
18 namespace webrtc { | 20 namespace webrtc { |
19 class NewMixHistory; | |
20 | 21 |
21 // A callback class that all mixer participants must inherit from/implement. | 22 // A callback class that all mixer participants must inherit from/implement. |
22 class MixerAudioSource { | 23 class MixerAudioSource { |
23 public: | 24 public: |
24 enum class AudioFrameInfo { | 25 enum class AudioFrameInfo { |
25 kNormal, // The samples in audio_frame are valid and should be used. | 26 kNormal, // The samples in audio_frame are valid and should be used. |
26 kMuted, // The samples in audio_frame should not be used, but should be | 27 kMuted, // The samples in audio_frame should not be used, but should be |
27 // implicitly interpreted as zero. Other fields in audio_frame | 28 // implicitly interpreted as zero. Other fields in audio_frame |
28 // may be read and should contain meaningful values. | 29 // may be read and should contain meaningful values. |
29 kError // audio_frame will not be used. | 30 kError // audio_frame will not be used. |
30 }; | 31 }; |
31 | 32 |
32 struct AudioFrameWithMuted { | 33 struct AudioFrameWithMuted { |
33 AudioFrame* audio_frame; | 34 AudioFrame* audio_frame; |
34 AudioFrameInfo audio_frame_info; | 35 AudioFrameInfo audio_frame_info; |
35 }; | 36 }; |
36 | 37 |
37 // The implementation of GetAudioFrameWithMuted should update | 38 // The implementation of GetAudioFrameWithMuted should update |
38 // audio_frame with new audio every time it's called. Implementing | 39 // audio_frame with new audio every time it's called. Implementing |
39 // classes are allowed to return the same AudioFrame pointer on | 40 // classes are allowed to return the same AudioFrame pointer on |
40 // different calls. The pointer must stay valid until the next | 41 // different calls. The pointer must stay valid until the next |
41 // mixing call or until this audio source is disconnected from the | 42 // mixing call or until this audio source is disconnected from the |
42 // mixer. | 43 // mixer. |
43 virtual AudioFrameWithMuted GetAudioFrameWithMuted(int32_t id, | 44 virtual AudioFrameWithMuted GetAudioFrameWithMuted(int32_t id, |
44 int sample_rate_hz) = 0; | 45 int sample_rate_hz) = 0; |
45 | 46 |
46 // Returns true if the participant was mixed this mix iteration. | 47 // Returns true if the audio source was mixed this mix iteration. |
47 bool IsMixed() const; | 48 bool IsMixed() const; |
48 | 49 |
49 NewMixHistory* mix_history_; | 50 // Returns true if the audio source was mixed previous mix |
| 51 // iteration. |
| 52 bool WasMixed() const; |
| 53 |
| 54 // Updates the mixed status. |
| 55 int32_t SetIsMixed(bool mixed); |
| 56 |
| 57 void ResetMixedStatus(); |
| 58 |
| 59 private: |
| 60 bool is_mixed_; |
50 | 61 |
51 protected: | 62 protected: |
52 MixerAudioSource(); | 63 MixerAudioSource(); |
53 virtual ~MixerAudioSource(); | 64 virtual ~MixerAudioSource(); |
54 }; | 65 }; |
55 } // namespace webrtc | 66 } // namespace webrtc |
56 | 67 |
57 #endif // WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_DEFINES_H_ | 68 #endif // WEBRTC_MODULES_AUDIO_MIXER_AUDIO_MIXER_DEFINES_H_ |
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