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/*
* libjingle
* Copyright 2004--2010, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_SOUND_LINUXSOUNDSYSTEM_H_
#define TALK_SOUND_LINUXSOUNDSYSTEM_H_
#include "talk/sound/automaticallychosensoundsystem.h"
namespace cricket {
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 cricket
#endif // TALK_SOUND_LINUXSOUNDSYSTEM_H_
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