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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 // On L+, we want to use floating point output for better fidelity. | 24 // On L+, we want to use floating point output for better fidelity. |
25 #if __ANDROID_API__ < 21 | 25 #if __ANDROID_API__ < 21 |
26 #define SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT ((SLuint32)0x00000001) | 26 #define SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT ((SLuint32)0x00000001) |
27 #define SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT ((SLuint32)0x00000002) | 27 #define SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT ((SLuint32)0x00000002) |
28 #define SL_ANDROID_PCM_REPRESENTATION_FLOAT ((SLuint32)0x00000003) | 28 #define SL_ANDROID_PCM_REPRESENTATION_FLOAT ((SLuint32)0x00000003) |
29 #define SL_ANDROID_DATAFORMAT_PCM_EX ((SLuint32)0x00000004) | 29 #define SL_ANDROID_DATAFORMAT_PCM_EX ((SLuint32)0x00000004) |
30 | 30 |
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41 #endif | 41 #endif |
42 | 42 |
43 namespace media { | 43 namespace media { |
44 | 44 |
45 class AudioManagerAndroid; | 45 class AudioManagerAndroid; |
46 | 46 |
47 // Implements PCM audio output support for Android using the OpenSLES API. | 47 // Implements PCM audio output support for Android using the OpenSLES API. |
48 // This class is created and lives on the Audio Manager thread but recorded | 48 // This class is created and lives on the Audio Manager thread but recorded |
49 // audio buffers are given to us from an internal OpenSLES audio thread. | 49 // audio buffers are given to us from an internal OpenSLES audio thread. |
50 // All public methods should be called on the Audio Manager thread. | 50 // All public methods should be called on the Audio Manager thread. |
51 class OpenSLESOutputStream : public AudioOutputStream { | 51 class OpenSLESOutputStream : public MuteableAudioOutputStream { |
52 public: | 52 public: |
53 static const int kMaxNumOfBuffersInQueue = 2; | 53 static const int kMaxNumOfBuffersInQueue = 2; |
54 | 54 |
55 OpenSLESOutputStream(AudioManagerAndroid* manager, | 55 OpenSLESOutputStream(AudioManagerAndroid* manager, |
56 const AudioParameters& params, | 56 const AudioParameters& params, |
57 SLint32 stream_type); | 57 SLint32 stream_type); |
58 | 58 |
59 ~OpenSLESOutputStream() override; | 59 ~OpenSLESOutputStream() override; |
60 | 60 |
61 // Implementation of AudioOutputStream. | 61 // Implementation of MuteableAudioOutputStream. |
62 bool Open() override; | 62 bool Open() override; |
63 void Close() override; | 63 void Close() override; |
64 void Start(AudioSourceCallback* callback) override; | 64 void Start(AudioSourceCallback* callback) override; |
65 void Stop() override; | 65 void Stop() override; |
66 void SetVolume(double volume) override; | 66 void SetVolume(double volume) override; |
67 void GetVolume(double* volume) override; | 67 void GetVolume(double* volume) override; |
68 | 68 |
69 // Set the value of |muted_|. It does not affect |volume_| which can be | 69 // Set the value of |muted_|. It does not affect |volume_| which can be |
70 // got by calling GetVolume(). See comments for |muted_| below. | 70 // got by calling GetVolume(). See comments for |muted_| below. |
71 void SetMute(bool muted); | 71 void SetMute(bool muted) override; |
72 | 72 |
73 private: | 73 private: |
74 bool CreatePlayer(); | 74 bool CreatePlayer(); |
75 | 75 |
76 // Called from OpenSLES specific audio worker thread. | 76 // Called from OpenSLES specific audio worker thread. |
77 static void SimpleBufferQueueCallback( | 77 static void SimpleBufferQueueCallback( |
78 SLAndroidSimpleBufferQueueItf buffer_queue, | 78 SLAndroidSimpleBufferQueueItf buffer_queue, |
79 void* instance); | 79 void* instance); |
80 | 80 |
81 // Fills up one buffer by asking the registered source for data. | 81 // Fills up one buffer by asking the registered source for data. |
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152 | 152 |
153 // Container for retrieving data from AudioSourceCallback::OnMoreData(). | 153 // Container for retrieving data from AudioSourceCallback::OnMoreData(). |
154 std::unique_ptr<AudioBus> audio_bus_; | 154 std::unique_ptr<AudioBus> audio_bus_; |
155 | 155 |
156 DISALLOW_COPY_AND_ASSIGN(OpenSLESOutputStream); | 156 DISALLOW_COPY_AND_ASSIGN(OpenSLESOutputStream); |
157 }; | 157 }; |
158 | 158 |
159 } // namespace media | 159 } // namespace media |
160 | 160 |
161 #endif // MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ | 161 #endif // MEDIA_AUDIO_ANDROID_OPENSLES_OUTPUT_H_ |
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