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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_
#define WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_
#include "webrtc/sound/automaticallychosensoundsystem.h"
namespace rtc {
extern const SoundSystemCreator kLinuxSoundSystemCreators[
#ifdef HAVE_LIBPULSE
2
#else
1
#endif
];
// The vast majority of Linux systems use ALSA for the device-level sound API,
// but an increasing number are using PulseAudio for the application API and
// only using ALSA internally in PulseAudio itself. But like everything on
// Linux this is user-configurable, so we need to support both and choose the
// right one at run-time.
// PulseAudioSoundSystem is designed to only successfully initialize if
// PulseAudio is installed and running, and if it is running then direct device
// access using ALSA typically won't work, so if PulseAudioSoundSystem
// initializes then we choose that. Otherwise we choose ALSA.
typedef AutomaticallyChosenSoundSystem<
kLinuxSoundSystemCreators,
ARRAY_SIZE(kLinuxSoundSystemCreators)> LinuxSoundSystem;
} // namespace rtc
#endif // WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_
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