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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 // Low-latency audio capturing unit utilizing audio input stream provided | 5 // Low-latency audio capturing unit utilizing audio input stream provided |
6 // by browser process through IPC. | 6 // by browser process through IPC. |
7 // | 7 // |
8 // Relationship of classes: | 8 // Relationship of classes: |
9 // | 9 // |
10 // AudioInputController AudioInputDevice | 10 // AudioInputController AudioInputDevice |
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68 #ifndef CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ | 68 #ifndef CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ |
69 #define CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ | 69 #define CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ |
70 #pragma once | 70 #pragma once |
71 | 71 |
72 #include <vector> | 72 #include <vector> |
73 | 73 |
74 #include "base/basictypes.h" | 74 #include "base/basictypes.h" |
75 #include "base/memory/scoped_ptr.h" | 75 #include "base/memory/scoped_ptr.h" |
76 #include "base/shared_memory.h" | 76 #include "base/shared_memory.h" |
77 #include "base/threading/simple_thread.h" | 77 #include "base/threading/simple_thread.h" |
| 78 #include "content/common/content_export.h" |
78 #include "content/renderer/media/audio_input_message_filter.h" | 79 #include "content/renderer/media/audio_input_message_filter.h" |
79 #include "media/audio/audio_parameters.h" | 80 #include "media/audio/audio_parameters.h" |
80 | 81 |
81 // TODO(henrika): This class is based on the AudioDevice class and it has | 82 // TODO(henrika): This class is based on the AudioDevice class and it has |
82 // many components in common. Investigate potential for re-factoring. | 83 // many components in common. Investigate potential for re-factoring. |
83 // TODO(henrika): Add support for event handling (e.g. OnStateChanged, | 84 // TODO(henrika): Add support for event handling (e.g. OnStateChanged, |
84 // OnCaptureStopped etc.) and ensure that we can deliver these notifications | 85 // OnCaptureStopped etc.) and ensure that we can deliver these notifications |
85 // to any clients using this class. | 86 // to any clients using this class. |
86 class AudioInputDevice | 87 class CONTENT_EXPORT AudioInputDevice |
87 : public AudioInputMessageFilter::Delegate, | 88 : public AudioInputMessageFilter::Delegate, |
88 public base::DelegateSimpleThread::Delegate, | 89 public base::DelegateSimpleThread::Delegate, |
89 public base::RefCountedThreadSafe<AudioInputDevice> { | 90 public base::RefCountedThreadSafe<AudioInputDevice> { |
90 public: | 91 public: |
91 class CaptureCallback { | 92 class CaptureCallback { |
92 public: | 93 public: |
93 virtual void Capture(const std::vector<float*>& audio_data, | 94 virtual void Capture(const std::vector<float*>& audio_data, |
94 size_t number_of_frames, | 95 size_t number_of_frames, |
95 size_t audio_delay_milliseconds) = 0; | 96 size_t audio_delay_milliseconds) = 0; |
96 protected: | 97 protected: |
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211 // callback. Only modified on the IO thread. | 212 // callback. Only modified on the IO thread. |
212 bool pending_device_ready_; | 213 bool pending_device_ready_; |
213 | 214 |
214 scoped_ptr<base::SharedMemory> shared_memory_; | 215 scoped_ptr<base::SharedMemory> shared_memory_; |
215 scoped_ptr<base::SyncSocket> socket_; | 216 scoped_ptr<base::SyncSocket> socket_; |
216 | 217 |
217 DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputDevice); | 218 DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputDevice); |
218 }; | 219 }; |
219 | 220 |
220 #endif // CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ | 221 #endif // CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ |
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