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Side by Side Diff: media/audio/win/audio_low_latency_input_win.h

Issue 1892433002: Moving device description utils from AudioManager[Base] into AudioDeviceDescription; to be shared b… (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: another rebase Created 4 years, 7 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 AudioInputStream for Windows using Windows Core Audio 5 // Implementation of AudioInputStream for Windows using Windows Core Audio
6 // WASAPI for low latency capturing. 6 // WASAPI for low latency capturing.
7 // 7 //
8 // Overview of operation: 8 // Overview of operation:
9 // 9 //
10 // - An object of WASAPIAudioInputStream is created by the AudioManager 10 // - An object of WASAPIAudioInputStream is created by the AudioManager
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145 // OnData() callback. 145 // OnData() callback.
146 size_t packet_size_frames_; 146 size_t packet_size_frames_;
147 147
148 // Size in bytes of each audio packet. 148 // Size in bytes of each audio packet.
149 size_t packet_size_bytes_; 149 size_t packet_size_bytes_;
150 150
151 // Length of the audio endpoint buffer. 151 // Length of the audio endpoint buffer.
152 uint32_t endpoint_buffer_size_frames_; 152 uint32_t endpoint_buffer_size_frames_;
153 153
154 // Contains the unique name of the selected endpoint device. 154 // Contains the unique name of the selected endpoint device.
155 // Note that AudioManagerBase::kDefaultDeviceId represents the default 155 // Note that AudioDeviceDescription::kDefaultDeviceId represents the default
156 // device role and is not a valid ID as such. 156 // device role and is not a valid ID as such.
157 std::string device_id_; 157 std::string device_id_;
158 158
159 // Conversion factor used in delay-estimation calculations. 159 // Conversion factor used in delay-estimation calculations.
160 // Converts a raw performance counter value to 100-nanosecond unit. 160 // Converts a raw performance counter value to 100-nanosecond unit.
161 double perf_count_to_100ns_units_; 161 double perf_count_to_100ns_units_;
162 162
163 // Conversion factor used in delay-estimation calculations. 163 // Conversion factor used in delay-estimation calculations.
164 // Converts from milliseconds to audio frames. 164 // Converts from milliseconds to audio frames.
165 double ms_to_frame_count_; 165 double ms_to_frame_count_;
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206 // Extra audio bus used for storage of deinterleaved data for the OnData 206 // Extra audio bus used for storage of deinterleaved data for the OnData
207 // callback. 207 // callback.
208 std::unique_ptr<media::AudioBus> audio_bus_; 208 std::unique_ptr<media::AudioBus> audio_bus_;
209 209
210 DISALLOW_COPY_AND_ASSIGN(WASAPIAudioInputStream); 210 DISALLOW_COPY_AND_ASSIGN(WASAPIAudioInputStream);
211 }; 211 };
212 212
213 } // namespace media 213 } // namespace media
214 214
215 #endif // MEDIA_AUDIO_WIN_AUDIO_LOW_LATENCY_INPUT_WIN_H_ 215 #endif // MEDIA_AUDIO_WIN_AUDIO_LOW_LATENCY_INPUT_WIN_H_
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