OLD | NEW |
1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 // Creates a unified stream based on the cras (ChromeOS audio server) interface. | 5 // Creates a unified stream based on the cras (ChromeOS audio server) interface. |
6 // | 6 // |
7 // CrasUnifiedStream object is *not* thread-safe and should only be used | 7 // CrasUnifiedStream object is *not* thread-safe and should only be used |
8 // from the audio thread. | 8 // from the audio thread. |
9 | 9 |
10 #ifndef MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_ | 10 #ifndef MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_ |
11 #define MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_ | 11 #define MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_ |
12 | 12 |
13 #include <cras_client.h> | 13 #include <cras_client.h> |
14 | 14 |
15 #include "base/compiler_specific.h" | 15 #include "base/compiler_specific.h" |
16 #include "media/audio/audio_io.h" | 16 #include "media/audio/audio_io.h" |
17 #include "media/audio/audio_parameters.h" | 17 #include "media/audio/audio_parameters.h" |
18 | 18 |
19 namespace media { | 19 namespace media { |
20 | 20 |
21 class AudioManagerCras; | 21 class AudioManagerCras; |
22 | 22 |
23 // Implementation of AudioOuputStream for Chrome OS using the Chrome OS audio | 23 // Implementation of AudioOuputStream for Chrome OS using the Chrome OS audio |
24 // server. | 24 // server. |
| 25 // TODO(dgreid): This class is used for only output, either remove all the |
| 26 // relevant input code and change the class to CrasOutputStream or merge |
| 27 // cras_input.cc into this unified implementation. |
25 class MEDIA_EXPORT CrasUnifiedStream : public AudioOutputStream { | 28 class MEDIA_EXPORT CrasUnifiedStream : public AudioOutputStream { |
26 public: | 29 public: |
27 // The ctor takes all the usual parameters, plus |manager| which is the | 30 // The ctor takes all the usual parameters, plus |manager| which is the |
28 // audio manager who is creating this object. | 31 // audio manager who is creating this object. |
29 CrasUnifiedStream(const AudioParameters& params, AudioManagerCras* manager); | 32 CrasUnifiedStream(const AudioParameters& params, AudioManagerCras* manager); |
30 | 33 |
31 // The dtor is typically called by the AudioManager only and it is usually | 34 // The dtor is typically called by the AudioManager only and it is usually |
32 // triggered by calling AudioUnifiedStream::Close(). | 35 // triggered by calling AudioUnifiedStream::Close(). |
33 virtual ~CrasUnifiedStream(); | 36 virtual ~CrasUnifiedStream(); |
34 | 37 |
(...skipping 62 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
97 | 100 |
98 // Volume level from 0.0 to 1.0. | 101 // Volume level from 0.0 to 1.0. |
99 float volume_; | 102 float volume_; |
100 | 103 |
101 // Audio manager that created us. Used to report that we've been closed. | 104 // Audio manager that created us. Used to report that we've been closed. |
102 AudioManagerCras* manager_; | 105 AudioManagerCras* manager_; |
103 | 106 |
104 // Callback to get audio samples. | 107 // Callback to get audio samples. |
105 AudioSourceCallback* source_callback_; | 108 AudioSourceCallback* source_callback_; |
106 | 109 |
107 // Container for exchanging data with AudioSourceCallback::OnMoreIOData(). | 110 // Container for exchanging data with AudioSourceCallback::OnMoreData(). |
108 scoped_ptr<AudioBus> input_bus_; | 111 scoped_ptr<AudioBus> input_bus_; |
109 scoped_ptr<AudioBus> output_bus_; | 112 scoped_ptr<AudioBus> output_bus_; |
110 | 113 |
111 // Direciton of the stream. | 114 // Direciton of the stream. |
112 CRAS_STREAM_DIRECTION stream_direction_; | 115 CRAS_STREAM_DIRECTION stream_direction_; |
113 | 116 |
114 DISALLOW_COPY_AND_ASSIGN(CrasUnifiedStream); | 117 DISALLOW_COPY_AND_ASSIGN(CrasUnifiedStream); |
115 }; | 118 }; |
116 | 119 |
117 } // namespace media | 120 } // namespace media |
118 | 121 |
119 #endif // MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_ | 122 #endif // MEDIA_AUDIO_LINUX_CRAS_UNIFIED_H_ |
OLD | NEW |