Date: Sun, 6 Apr 2025 21:08:59 +0200 From: Christos Margiolis <christos@freebsd.org> To: freebsd-hackers@freebsd.org Cc: freebsd-multimedia@freebsd.org, freebsd-desktop@freebsd.org Subject: [Call for testing] sound: Implement /dev/dsp as a router device Message-ID: <l2cfedicapbvj374ayetumvgwef5tyxwqy6kj6bapaprzkkxvt@edzltnq3km3a>
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I've been working on a patch [1] to re-implement /dev/dsp as a router/virtual device. The commit message in the review explains all the high-level details and reasons behind the patch. This is the first of a series of patches I'm working on. For regular users, the main functional difference is that with this patch, /dev/dsp is an actual router device (like when using virtual_oss), which means that we have hot-swapping (i.e., changing the default device and routing audio to it during IO without needing to close and re-open /dev/dsp) built into sound(4). Feel free to test the patch and please let me know if there's anything that breaks or could be improved. You can play around with it just by recording/playing audio as you always do, try some hot-swaps, hot-(un)plugs, and anything that can stress test it. Just make sure you open /dev/dsp, which should be the default for most applications anyway. Christos [1] https://reviews.freebsd.org/D49216help
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