66a3582170
BUG=3379 R=andrew@webrtc.org Review URL: https://webrtc-codereview.appspot.com/22379004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6986 4adac7df-926f-26a2-2b94-8c16560cd09d
42 lines
1.5 KiB
C++
42 lines
1.5 KiB
C++
/*
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* Copyright 2004 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_SOUND_LINUXSOUNDSYSTEM_H_
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#define WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_
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#include "webrtc/sound/automaticallychosensoundsystem.h"
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namespace rtc {
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extern const SoundSystemCreator kLinuxSoundSystemCreators[
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#ifdef HAVE_LIBPULSE
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2
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#else
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1
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#endif
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];
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// The vast majority of Linux systems use ALSA for the device-level sound API,
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// but an increasing number are using PulseAudio for the application API and
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// only using ALSA internally in PulseAudio itself. But like everything on
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// Linux this is user-configurable, so we need to support both and choose the
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// right one at run-time.
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// PulseAudioSoundSystem is designed to only successfully initialize if
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// PulseAudio is installed and running, and if it is running then direct device
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// access using ALSA typically won't work, so if PulseAudioSoundSystem
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// initializes then we choose that. Otherwise we choose ALSA.
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typedef AutomaticallyChosenSoundSystem<
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kLinuxSoundSystemCreators,
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ARRAY_SIZE(kLinuxSoundSystemCreators)> LinuxSoundSystem;
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} // namespace rtc
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#endif // WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_
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