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| ChangeLog | ||
| README.md | ||
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README.md
OpenAL Soft
master branch CI status : 
OpenAL Soft is an LGPL-licensed, cross-platform, software implementation of the OpenAL 3D audio API. It's forked from the open-sourced Windows version available originally from openal.org's SVN repository (now defunct). OpenAL provides capabilities for playing audio in a virtual 3D environment. Distance attenuation, doppler shift, and directional sound emitters are among the features handled by the API. More advanced effects, including air absorption, occlusion, and environmental reverb, are available through the EFX extension. It also facilitates streaming audio, multi-channel buffers, and audio capture.
More information is available on the official website.
Source Install
To install OpenAL Soft, use your favorite shell to go into the build/ directory, and run:
cmake ..
Alternatively, you can use any available CMake front-end, like cmake-gui, ccmake, or your preferred IDE's CMake project parser.
Assuming configuration went well, you can then build it. The command
cmake --build . will instruct CMake to build the project with the toolchain
chosen during configuration (often GNU Make or NMake, although others are
possible).
Please Note: Double check that the appropriate backends were detected. Often, complaints of no sound, crashing, and missing devices can be solved by making sure the correct backends are being used. CMake's output will identify which backends were enabled.
For most systems, you will likely want to make sure PipeWire, PulseAudio, and ALSA were detected (if your target system uses them). For Windows, make sure WASAPI was detected.
Building openal-soft - Using vcpkg
You can download and install openal-soft using the vcpkg dependency manager:
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
./vcpkg install openal-soft
The openal-soft port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please create an issue or pull request on the vcpkg repository.
Utilities
The source package comes with an informational utility, openal-info, and is built by default. It prints out information provided by the ALC and AL sub- systems, including discovered devices, version information, and extensions.
Configuration
OpenAL Soft can be configured on a per-user and per-system basis. This allows users and sysadmins to control information provided to applications, as well as application-agnostic behavior of the library. See alsoftrc.sample for available settings.
Acknowledgements
Special thanks go to:
- Creative Labs for the original source code this is based off of.
- Christopher Fitzgerald for the current reverb effect implementation, and helping with the low-pass and HRTF filters.
- Christian Borss for the 3D panning code previous versions used as a base.
- Ben Davis for the idea behind a previous version of the click-removal code.
- Richard Furse for helping with my understanding of Ambisonics that is used by the various parts of the library.