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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ | 5 #ifndef MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ |
6 #define MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ | 6 #define MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ |
7 | 7 |
8 #include <SLES/OpenSLES.h> | 8 #include <SLES/OpenSLES.h> |
9 #include <SLES/OpenSLES_Android.h> | 9 #include <SLES/OpenSLES_Android.h> |
10 #include <stddef.h> | 10 #include <stddef.h> |
11 #include <stdint.h> | 11 #include <stdint.h> |
12 | 12 |
13 #include <memory> | 13 #include <memory> |
14 | 14 |
15 #include "base/compiler_specific.h" | 15 #include "base/compiler_specific.h" |
16 #include "base/macros.h" | 16 #include "base/macros.h" |
17 #include "base/synchronization/lock.h" | 17 #include "base/synchronization/lock.h" |
18 #include "base/threading/thread_checker.h" | 18 #include "base/threading/thread_checker.h" |
| 19 #include "media/audio/android/muteable_audio_output_stream.h" |
19 #include "media/audio/android/opensles_util.h" | 20 #include "media/audio/android/opensles_util.h" |
20 #include "media/audio/audio_io.h" | |
21 #include "media/base/audio_parameters.h" | 21 #include "media/base/audio_parameters.h" |
22 #include "media/base/audio_timestamp_helper.h" | 22 #include "media/base/audio_timestamp_helper.h" |
23 | 23 |
24 namespace media { | 24 namespace media { |
25 | 25 |
26 class AudioManagerAndroid; | 26 class AudioManagerAndroid; |
27 | 27 |
28 // Implements PCM audio output support for Android using the OpenSLES API. | 28 // Implements PCM audio output support for Android using the OpenSLES API. |
29 // This class is created and lives on the Audio Manager thread but recorded | 29 // This class is created and lives on the Audio Manager thread but recorded |
30 // audio buffers are given to us from an internal OpenSLES audio thread. | 30 // audio buffers are given to us from an internal OpenSLES audio thread. |
31 // All public methods should be called on the Audio Manager thread. | 31 // All public methods should be called on the Audio Manager thread. |
32 class OpenSLESOutputStream : public AudioOutputStream { | 32 class OpenSLESOutputStream : public MuteableAudioOutputStream { |
33 public: | 33 public: |
34 static const int kMaxNumOfBuffersInQueue = 2; | 34 static const int kMaxNumOfBuffersInQueue = 2; |
35 | 35 |
36 OpenSLESOutputStream(AudioManagerAndroid* manager, | 36 OpenSLESOutputStream(AudioManagerAndroid* manager, |
37 const AudioParameters& params, | 37 const AudioParameters& params, |
38 SLint32 stream_type); | 38 SLint32 stream_type); |
39 | 39 |
40 ~OpenSLESOutputStream() override; | 40 ~OpenSLESOutputStream() override; |
41 | 41 |
42 // Implementation of AudioOutputStream. | 42 // Implementation of MuteableAudioOutputStream. |
43 bool Open() override; | 43 bool Open() override; |
44 void Close() override; | 44 void Close() override; |
45 void Start(AudioSourceCallback* callback) override; | 45 void Start(AudioSourceCallback* callback) override; |
46 void Stop() override; | 46 void Stop() override; |
47 void SetVolume(double volume) override; | 47 void SetVolume(double volume) override; |
48 void GetVolume(double* volume) override; | 48 void GetVolume(double* volume) override; |
49 | 49 |
50 // Set the value of |muted_|. It does not affect |volume_| which can be | 50 // Set the value of |muted_|. It does not affect |volume_| which can be |
51 // got by calling GetVolume(). See comments for |muted_| below. | 51 // got by calling GetVolume(). See comments for |muted_| below. |
52 void SetMute(bool muted); | 52 void SetMute(bool muted) override; |
53 | 53 |
54 private: | 54 private: |
55 bool CreatePlayer(); | 55 bool CreatePlayer(); |
56 | 56 |
57 // Called from OpenSLES specific audio worker thread. | 57 // Called from OpenSLES specific audio worker thread. |
58 static void SimpleBufferQueueCallback( | 58 static void SimpleBufferQueueCallback( |
59 SLAndroidSimpleBufferQueueItf buffer_queue, | 59 SLAndroidSimpleBufferQueueItf buffer_queue, |
60 void* instance); | 60 void* instance); |
61 | 61 |
62 // Fills up one buffer by asking the registered source for data. | 62 // Fills up one buffer by asking the registered source for data. |
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126 | 126 |
127 // Container for retrieving data from AudioSourceCallback::OnMoreData(). | 127 // Container for retrieving data from AudioSourceCallback::OnMoreData(). |
128 std::unique_ptr<AudioBus> audio_bus_; | 128 std::unique_ptr<AudioBus> audio_bus_; |
129 | 129 |
130 DISALLOW_COPY_AND_ASSIGN(OpenSLESOutputStream); | 130 DISALLOW_COPY_AND_ASSIGN(OpenSLESOutputStream); |
131 }; | 131 }; |
132 | 132 |
133 } // namespace media | 133 } // namespace media |
134 | 134 |
135 #endif // MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ | 135 #endif // MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ |
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