The RtAudio Home Page

RtAudio is a set of C++ classes that provide a common API (Application Programming Interface) for realtime audio input/output across Linux, Macintosh OS-X and Windows operating systems. RtAudio significantly simplifies the process of interacting with computer audio hardware. It was designed with the following objectives:

• object-oriented C++ design
• simple, common API across all supported platforms
• only one source and one header file for easy inclusion in programming projects
• allow simultaneous multi-api support
• support dynamic connection of devices
• provide extensive audio device parameter control
• allow audio device capability probing
• automatic internal conversion for data format, channel number compensation, (de)interleaving, and byte-swapping

RtAudio incorporates the concept of audio streams, which represent audio output (playback) and/or input (recording). Available audio devices and their capabilities can be enumerated and then specified when opening a stream. Where applicable, multiple API support can be compiled and a particular API specified when creating an RtAudio instance. See the API Notes section for information specific to each of the supported audio APIs.

Latest Updates (Version 5.1.0)

Changes in this release include:

• new C API wrapper
• new static functions to get API names
• many WASAPI updates (thanks to Marcus Tomlinson)
• miscellaneous build system updates
• bug fix for stream ticking in CoreAudio if using two devices for duplex
• ALSA stream handle bug fixes
• see git history for complete list of changes

Download

Latest Release (17 April 2019): Version 5.1.0

Documentation Links

1. Error Handling
2. Probing Device Capabilities
3. Device Settings
4. Playback
5. Recording
6. Duplex Mode
7. Using Simultaneous Multiple APIs
8. Debugging & Compiling
9. API Notes
10. Acknowledgements
11. License
12. RtAudio on GitHub