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Side by Side Diff: media/audio/win/audio_low_latency_output_win.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 // Implementation of AudioOutputStream for Windows using Windows Core Audio 5 // Implementation of AudioOutputStream for Windows using Windows Core Audio
6 // WASAPI for low latency rendering. 6 // WASAPI for low latency rendering.
7 // 7 //
8 // Overview of operation and performance: 8 // Overview of operation and performance:
9 // 9 //
10 // - An object of WASAPIAudioOutputStream is created by the AudioManager 10 // - An object of WASAPIAudioOutputStream is created by the AudioManager
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124 WASAPIAudioOutputStream(AudioManagerWin* manager, 124 WASAPIAudioOutputStream(AudioManagerWin* manager,
125 const std::string& device_id, 125 const std::string& device_id,
126 const AudioParameters& params, 126 const AudioParameters& params,
127 ERole device_role); 127 ERole device_role);
128 128
129 // The dtor is typically called by the AudioManager only and it is usually 129 // The dtor is typically called by the AudioManager only and it is usually
130 // triggered by calling AudioOutputStream::Close(). 130 // triggered by calling AudioOutputStream::Close().
131 virtual ~WASAPIAudioOutputStream(); 131 virtual ~WASAPIAudioOutputStream();
132 132
133 // Implementation of AudioOutputStream. 133 // Implementation of AudioOutputStream.
134 virtual bool Open() OVERRIDE; 134 virtual bool Open() override;
135 virtual void Start(AudioSourceCallback* callback) OVERRIDE; 135 virtual void Start(AudioSourceCallback* callback) override;
136 virtual void Stop() OVERRIDE; 136 virtual void Stop() override;
137 virtual void Close() OVERRIDE; 137 virtual void Close() override;
138 virtual void SetVolume(double volume) OVERRIDE; 138 virtual void SetVolume(double volume) override;
139 virtual void GetVolume(double* volume) OVERRIDE; 139 virtual void GetVolume(double* volume) override;
140 140
141 // Retrieves the sample rate the audio engine uses for its internal 141 // Retrieves the sample rate the audio engine uses for its internal
142 // processing/mixing of shared-mode streams. To fetch the settings for the 142 // processing/mixing of shared-mode streams. To fetch the settings for the
143 // default device, pass an empty string as the |device_id|. 143 // default device, pass an empty string as the |device_id|.
144 static int HardwareSampleRate(const std::string& device_id); 144 static int HardwareSampleRate(const std::string& device_id);
145 145
146 // Returns AUDCLNT_SHAREMODE_EXCLUSIVE if --enable-exclusive-mode is used 146 // Returns AUDCLNT_SHAREMODE_EXCLUSIVE if --enable-exclusive-mode is used
147 // as command-line flag and AUDCLNT_SHAREMODE_SHARED otherwise (default). 147 // as command-line flag and AUDCLNT_SHAREMODE_SHARED otherwise (default).
148 static AUDCLNT_SHAREMODE GetShareMode(); 148 static AUDCLNT_SHAREMODE GetShareMode();
149 149
150 bool started() const { return render_thread_.get() != NULL; } 150 bool started() const { return render_thread_.get() != NULL; }
151 151
152 private: 152 private:
153 // DelegateSimpleThread::Delegate implementation. 153 // DelegateSimpleThread::Delegate implementation.
154 virtual void Run() OVERRIDE; 154 virtual void Run() override;
155 155
156 // Core part of the thread loop which controls the actual rendering. 156 // Core part of the thread loop which controls the actual rendering.
157 // Checks available amount of space in the endpoint buffer and reads 157 // Checks available amount of space in the endpoint buffer and reads
158 // data from the client to fill up the buffer without causing audio 158 // data from the client to fill up the buffer without causing audio
159 // glitches. 159 // glitches.
160 bool RenderAudioFromSource(UINT64 device_frequency); 160 bool RenderAudioFromSource(UINT64 device_frequency);
161 161
162 // Called when the device will be opened in exclusive mode and use the 162 // Called when the device will be opened in exclusive mode and use the
163 // application specified format. 163 // application specified format.
164 // TODO(henrika): rewrite and move to CoreAudioUtil when removing flag 164 // TODO(henrika): rewrite and move to CoreAudioUtil when removing flag
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240 scoped_ptr<AudioBus> audio_bus_; 240 scoped_ptr<AudioBus> audio_bus_;
241 241
242 base::win::ScopedComPtr<IAudioClock> audio_clock_; 242 base::win::ScopedComPtr<IAudioClock> audio_clock_;
243 243
244 DISALLOW_COPY_AND_ASSIGN(WASAPIAudioOutputStream); 244 DISALLOW_COPY_AND_ASSIGN(WASAPIAudioOutputStream);
245 }; 245 };
246 246
247 } // namespace media 247 } // namespace media
248 248
249 #endif // MEDIA_AUDIO_WIN_AUDIO_LOW_LATENCY_OUTPUT_WIN_H_ 249 #endif // MEDIA_AUDIO_WIN_AUDIO_LOW_LATENCY_OUTPUT_WIN_H_
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