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authorMichał Cichoń <michcic@gmail.com>2011-11-15 22:28:48 +0100
committerMichał Cichoń <michcic@gmail.com>2011-11-15 22:28:48 +0100
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+libao - A Cross-platform Audio Library, Version 0.8.6
+
+Originally Copyright (C) Aaron Holtzman - May 1999
+Changes Copyright (C) Jack Moffitt - October 2000
+Changes Copyright (C) Stan Seibert - July 2000-March 2004
+libao-pulse Copyright (C) Lennart Poettering 2004-2006
+Changes Copyright (C) 2004-2005 Xiph.org Foundation
+Changes Maintainer Benjamin Gerard
+
+libao is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+libao is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Make; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+---------------------------------------------------------------------
+
+OVERVIEW
+
+Libao is a cross-platform audio library that allows programs to output
+audio using a simple API on a wide variety of platforms. It currently
+supports:
+ * Null output
+ * WAV files
+ * OSS (Open Sound System)
+ * ESD (ESounD or Enlightened Sound Daemon)
+ * ALSA (Advanced Linux Sound Architecture)
+ * PulseAudio (next generation GNOME sound server)
+ * AIX
+ * Solaris (untested)
+ * IRIX (untested)
+
+HISTORY
+
+Libao began life as cross-platform audio library inside of ac3dec, an
+AC3 decoder by Aaron Holtzman that is part of the LiViD project. When
+ogg123 (part of the command line vorbis tools) needed a way to play
+audio on multiple operating systems, someone on the vorbis-dev mailing
+list suggested the libao library as a possible way to add cross-platform
+support to ogg123. Stan Seibert downloaded the libao library, severely
+hacked it up in order to make the build process simpler and support
+multiple live-playback devices. (The original code allowed one live
+playback driver, the wav driver, and a null driver to be compiled into
+the library.) Jack Moffitt got it supporting dynamically loaded plugins
+so that binary versions of libao could be provided. The API was revised
+for version 0.8.0.
+
+This code is being maintained by Stan Seibert (volsung@xiph.org)
+and various other individuals. Please DO NOT annoy Aaron Holtzman about
+bugs, features, comments, etc. regarding this code.
+
+WORKAROUNDS
+
+The OSS emulation in ALSA deviates from the OSS spec by not returning
+immediately from an open() call if the OSS device is already in use.
+Instead, it makes the application wait until the device is available.
+This is not desirable during the autodetection phase of libao, so a
+workaround has been included in the source. Since the workaround
+itself violates the OSS spec and causes other problems on some
+platforms, it is only enabled when ALSA is detected. The workaround
+can be turned on or off by passing the --enable-broken-oss or
+--disable-broken-oss flag to the configure script.