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Side by Side Diff: media/audio/audio_output_dispatcher_impl.h

Issue 623263003: replace OVERRIDE and FINAL with override and final in media/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 2 months ago
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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 // AudioOutputDispatcherImpl is an implementation of AudioOutputDispatcher. 5 // AudioOutputDispatcherImpl is an implementation of AudioOutputDispatcher.
6 // 6 //
7 // To avoid opening and closing audio devices more frequently than necessary, 7 // To avoid opening and closing audio devices more frequently than necessary,
8 // each dispatcher has a pool of inactive physical streams. A stream is closed 8 // each dispatcher has a pool of inactive physical streams. A stream is closed
9 // only if it hasn't been used for a certain period of time (specified via the 9 // only if it hasn't been used for a certain period of time (specified via the
10 // constructor). 10 // constructor).
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33 public: 33 public:
34 // |close_delay| specifies delay after the stream is idle until the audio 34 // |close_delay| specifies delay after the stream is idle until the audio
35 // device is closed. 35 // device is closed.
36 AudioOutputDispatcherImpl(AudioManager* audio_manager, 36 AudioOutputDispatcherImpl(AudioManager* audio_manager,
37 const AudioParameters& params, 37 const AudioParameters& params,
38 const std::string& output_device_id, 38 const std::string& output_device_id,
39 const base::TimeDelta& close_delay); 39 const base::TimeDelta& close_delay);
40 40
41 // Opens a new physical stream if there are no pending streams in 41 // Opens a new physical stream if there are no pending streams in
42 // |idle_streams_|. Do not call Close() or Stop() if this method fails. 42 // |idle_streams_|. Do not call Close() or Stop() if this method fails.
43 virtual bool OpenStream() OVERRIDE; 43 virtual bool OpenStream() override;
44 44
45 // If there are pending streams in |idle_streams_| then it reuses one of 45 // If there are pending streams in |idle_streams_| then it reuses one of
46 // them, otherwise creates a new one. 46 // them, otherwise creates a new one.
47 virtual bool StartStream(AudioOutputStream::AudioSourceCallback* callback, 47 virtual bool StartStream(AudioOutputStream::AudioSourceCallback* callback,
48 AudioOutputProxy* stream_proxy) OVERRIDE; 48 AudioOutputProxy* stream_proxy) override;
49 49
50 // Stops the stream assigned to the specified proxy and moves it into 50 // Stops the stream assigned to the specified proxy and moves it into
51 // |idle_streams_| for reuse by other proxies. 51 // |idle_streams_| for reuse by other proxies.
52 virtual void StopStream(AudioOutputProxy* stream_proxy) OVERRIDE; 52 virtual void StopStream(AudioOutputProxy* stream_proxy) override;
53 53
54 virtual void StreamVolumeSet(AudioOutputProxy* stream_proxy, 54 virtual void StreamVolumeSet(AudioOutputProxy* stream_proxy,
55 double volume) OVERRIDE; 55 double volume) override;
56 56
57 // Closes |idle_streams_| until the number of |idle_streams_| is equal to the 57 // Closes |idle_streams_| until the number of |idle_streams_| is equal to the
58 // |idle_proxies_| count. If there are no |idle_proxies_| a single stream is 58 // |idle_proxies_| count. If there are no |idle_proxies_| a single stream is
59 // kept alive until |close_timer_| fires. 59 // kept alive until |close_timer_| fires.
60 virtual void CloseStream(AudioOutputProxy* stream_proxy) OVERRIDE; 60 virtual void CloseStream(AudioOutputProxy* stream_proxy) override;
61 61
62 virtual void Shutdown() OVERRIDE; 62 virtual void Shutdown() override;
63 63
64 private: 64 private:
65 friend class base::RefCountedThreadSafe<AudioOutputDispatcherImpl>; 65 friend class base::RefCountedThreadSafe<AudioOutputDispatcherImpl>;
66 virtual ~AudioOutputDispatcherImpl(); 66 virtual ~AudioOutputDispatcherImpl();
67 67
68 // Creates a new physical output stream, opens it and pushes to 68 // Creates a new physical output stream, opens it and pushes to
69 // |idle_streams_|. Returns false if the stream couldn't be created or 69 // |idle_streams_|. Returns false if the stream couldn't be created or
70 // opened. 70 // opened.
71 bool CreateAndOpenStream(); 71 bool CreateAndOpenStream();
72 72
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90 typedef std::map<AudioOutputStream*, int> AudioStreamIDMap; 90 typedef std::map<AudioOutputStream*, int> AudioStreamIDMap;
91 AudioStreamIDMap audio_stream_ids_; 91 AudioStreamIDMap audio_stream_ids_;
92 int audio_stream_id_; 92 int audio_stream_id_;
93 93
94 DISALLOW_COPY_AND_ASSIGN(AudioOutputDispatcherImpl); 94 DISALLOW_COPY_AND_ASSIGN(AudioOutputDispatcherImpl);
95 }; 95 };
96 96
97 } // namespace media 97 } // namespace media
98 98
99 #endif // MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_IMPL_H_ 99 #endif // MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_IMPL_H_
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