8324b525dc
Also adds a framework for an AudioManager to be used by both sides (playout and recording). This initial implementation only does very simple tasks like setting up the correct audio mode (needed for correct volume behavior). Note that this CL is mainly about modifying the volume. The added AudioManager is only a place holder for future work. I could have done the same parts in the WebRtcAudioTrack class but feel that it is better to move these parts to an AudioManager already at this stage. The AudioManager supports Init() where actual audio changes are done (set audio mode etc.) but it can also be used a simple "construct-and-store-audio-parameters" unit, which is the case here. Hence, the AM now serves as the center for getting audio parameters and then inject these into playout and recording sides. Previously, both sides acquired their own parameters and that is more error prone. BUG=NONE TEST=AudioDeviceTest R=perkj@webrtc.org, phoglund@webrtc.org Review URL: https://webrtc-codereview.appspot.com/45829004 Cr-Commit-Position: refs/heads/master@{#8875}
37 lines
1.0 KiB
C++
37 lines
1.0 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_COMMON_H_
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#define WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_COMMON_H_
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namespace webrtc {
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enum {
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kDefaultSampleRate = 44100,
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kNumChannels = 1,
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kDefaultBufSizeInSamples = kDefaultSampleRate * 10 / 1000,
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// Number of bytes per audio frame.
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// Example: 16-bit PCM in mono => 1*(16/8)=2 [bytes/frame]
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kBytesPerFrame = kNumChannels * (16 / 8),
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};
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class PlayoutDelayProvider {
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public:
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virtual int PlayoutDelayMs() = 0;
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protected:
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PlayoutDelayProvider() {}
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virtual ~PlayoutDelayProvider() {}
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_COMMON_H_
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