![]() ![]() Solaris and OpenSolaris uses a fork of OSS4 called Boomer. NetBSD supports a compatibility mode for the OSS API, by providing the soundcard.h header file and the libossaudio library, which internally operate using the native Sun-like audio interface. Other implementations įreeBSD contains an independently developed implementation of the OSS API, which includes, among other things, in-kernel resampling, mixing (vchans), equalizer, surround sound, and independent volume control for each application. ![]() In January 2008, 4Front Technologies released OSS for FreeBSD (and other BSD systems) under the BSD-2-Clause. In July 2007, 4Front Technologies released sources for OSS under CDDL-1.0 for OpenSolaris and GPL-2.0-only for Linux. In spite of this, several operating systems, such as FreeBSD, continued to distribute previous versions of OSS, and continue to maintain and improve these versions. Some Linux distributions, such as Ubuntu, have chosen to disable OSS support in their kernels and ignore any bugs filed against OSS4 packages (although OSS support may be re-enabled on Ubuntu ). In response, eventually the Linux community abandoned the OSS/free implementation included in the kernel and development effort switched to the replacement Advanced Linux Sound Architecture (ALSA). The project was initially free software, but following the project's success, Savolainen was contracted by the company 4Front Technologies and made his support for newer sound devices and improvements proprietary. Examples using the shell:Ĭat /dev/random > /dev/dsp # plays white noise through the speakerĬat /dev/dsp > a.a # reads data from the microphone and copies it to file a.a For instance, the default device for sound input and output is /dev/dsp. The API is designed to use the traditional Unix framework of open(), read(), write(), and ioctl(), via special devices. OSS was created by Hannu Savolainen and is distributed under four license options, three of which are free software licences, thus making OSS free software. The goal of OSS is to allow the writing of sound-based applications that are agnostic of the underlying sound hardware. The term also sometimes refers to the software in a Unix kernel that provides the OSS interface it can be thought of as a device driver (or a collection of device drivers) for sound controller hardware. It is based on standard Unix devices system calls (i.e. The Open Sound System (OSS) is an interface for making and capturing sound in Unix and Unix-like operating systems. ![]()
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