snd_pcm_hw_param_value(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_pcm_hw_param_value — like, the Kernel API Manual page you actually wanna read 🎀

okay so bestie, welcome to the Kernel API Manual entry for snd_pcm_hw_param_value(9) — yes the whole nine, no skips, we're reading it together. grab a matcha 🍓

✨ NAME ✨

snd_pcm_hw_param_value — return @params field @var value 🫶

like, it goes and fetches a value for you out of the params struct. that's the vibe.

🌸 SYNOPSIS 🌸

int snd_pcm_hw_param_value (const struct snd_pcm_hw_params *params ,
snd_pcm_hw_param_t var , int *dir );

🦋 ARGUMENTS 🦋

  • params — the hw_params instance 💖 like, the actual config object we're digging through.
  • var — the parameter to retrieve 👑 this is the thing you're asking about.
  • dir — pointer to the direction (-1, 0, 1) or NULL 🌈 so yes, you can hand it NULL and it's totally fine, no cap.

🔥 RETURN 🔥

So here's the tea: you get the value for field var if it's fixed in the configuration space defined by params. 💀 If it's not fixed, you get -EINVAL instead. that's it, that's the whole deal, periodt.

lowkey important: "fixed in configuration space" is doing a lot of work in that sentence — if it ain't fixed, don't expect a number, expect -EINVAL. 🙈

🧚 SEE ALSO 🧚

okay this list is long but we are not skipping a single one, bestie. every name stays, character for character, iykyk. 🌟

Also the kernel file: ./sound/core/pcm_lib.c 🎀

that's the whole page, bestie, you ate that 💅✨

sign-off szn 🎀 — this lil beauty lives in ./sound/core, dated October 2026, and it's the snd_pcm_hw_param_value(9) page, mwah 💖 see u in the next manpage, ily, bye!! 🦋🌸

📦 where this page comes from