| /* |
| * 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_ |
