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Backend Support
Matthew Gregan edited this page Jan 30, 2020
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4 revisions
| Backend | Platform version | Support Level | Comments |
| PulseAudio (C) | Tier-4 | Was Tier-1, superseded by Rust | |
| PulseAudio (Rust) | Tier-1 | ||
| AudioUnit (C++) | Tier-4 | Was Tier-1, superseded by Rust | |
| AudioUnit (Rust) | Tier-1 | ||
| WinMM | Windows XP | Tier-3 | Was Tier-1, Firefox minimum Windows version 7. |
| WASAPI | Windows >= 7 | Tier-1 | |
| AudioTrack | Android < 2.3 | Tier-3 | Was Tier-1, Firefox minimum Android version 4.1. |
| OpenSL | Android >= 2.3 | Tier-1 | |
| AAudio | Android >= 8 | WIP (PR #559) | |
| sndio | Tier-2 | ||
| ALSA | Tier-3 | ||
| JACK | Tier-3 | ||
| Sun | Tier-2 | ||
| KAI | Tier-3 | ||
| OSS | Abandoned WIP (PR #41) |
- Tier-1: Actively maintained. Should have CI coverage. Critical for Firefox.
- Tier-2: Actively maintained by contributors. CI coverage appreciated.
- Tier-3: Maintainers/patches accepted. Status unclear.
- Tier-4: Deprecated, obsolete. Scheduled to be removed.
Note that the support level is not a judgement of the relative merits of a backend, only the current state of support, which is informed mainly by Firefox’s needs, the responsiveness of a backend’s maintainer, and the level of contributions to that backend.