virtsnd_pcm_dev_set_params(9)

📦 version 7.3.1, in nixpkgs unstable

💅 virtsnd_pcm_dev_set_params(9) — like, the Kernel API Manual page, bestie ✨

okay so picture this: it's a Kernel API Manual page, and the star of the show is virtsnd_pcm_dev_set_params — the function that sets the parameters of a PCM substream, but on the device side. yes, that side. the cool side. 🎀

🌸 NAME 🌸

virtsnd_pcm_dev_set_params — set the parameters of the PCM substream on the device side 💖

✨ SYNOPSIS ✨

int virtsnd_pcm_dev_set_params (struct virtio_pcm_substream *vss ,
unsigned int buffer_bytes , unsigned int period_bytes , unsigned int
channels , snd_pcm_format_t format , unsigned int rate );

that's the whole vibe check right there, no cap 👑

🦋 ARGUMENTS 🦋

  • vss — the VirtIO PCM substream itself, the main character 🫶
  • buffer_bytes — size of the hardware buffer, like how much room the hardware gets to work with 💫
  • period_bytes — size of the hardware period 🎀
  • channels — the selected number of channels, pick your fighter 🌈
  • format — the selected sample format (SNDRV_PCM_FORMAT_XXX), literal format icon behaviour 💅
  • rate — the selected frame rate, the tempo of the whole operation 🔥

💜 CONTEXT 💜

any context that permits to sleep 😴 — yes bestie, you're allowed to sleep here, that's genuinely the requirement, not a metaphor.

⭐ RETURN ⭐

  • 0 on success — slay, immaculate, ate 💅
  • -errno on failure — not slay, but that's the deal 🙈

🌸 SEE ALSO 🌸

kernel file ./sound/virtio/virtio_pcm_ops.c plus the whole friend group 💖:

and that's the page, bestie 🧚 — brought to you from ./sound/virtio, dated October 2026, and yes, virtsnd_pcm_dev_set_params(9) is literally right there in the title the whole time 💜 periodt ✨

📦 where this page comes from