snd_pcm_for...ysical_width(9)

💅 snd_pcm_format_physical_width(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ this one is a tiny little function page but it's lowkey iconic, so let's get into it 🎀

---

🌸 NAME 🌸

snd_pcm_format_physical_width — bestie, this one literally just returns the physical bit-width of the format 🦋 that's it, that's the whole job, and it does it slayfully 💅

---

✨ SYNOPSIS ✨

int snd_pcm_format_physical_width (snd_pcm_format_t format );

no cap, that's the whole signature 🫶

---

🎀 ARGUMENTS 🎀

• format — the format you wanna check 👀 like, hand it over and it'll tell you what's up ✨

---

💖 RETURN 💖

So here's the vibe check 🌈:

• if everything's good, you get the physical bit-width of the format 👑
• if the format is unknown?? you get a negative error code 😭 not me getting a negative error code, couldn't be me 🙈

fr fr, watch out for that negative return — check before you use it, bestie 💀

---

🦋 SEE ALSO 🦋

the kernel file lives at ./sound/core/pcm_misc.c and honestly it's giving "the source of truth" energy 📁✨ go peek if you're curious, iykyk

and here's the whole friend group, all iconic, all worth a follow 💜:

• snd_pcm_format_signed(9)
• snd_pcm_format_unsigned(9)
• snd_pcm_format_linear(9)
• snd_pcm_format_little_endian(9)
• snd_pcm_format_big_endian(9)
• snd_pcm_format_width(9)
• snd_pcm_format_size(9)
• snd_pcm_format_silence_64(9)
• snd_pcm_format_set_silence(9)
• snd_pcm_hw_limit_rates(9)
• snd_pcm_rate_to_rate_bit(9)
• snd_pcm_rate_bit_to_rate(9)
• snd_pcm_rate_mask_intersect(9)

---

mwah 💋 this page lives in ./sound/core, dated October 2026 — that's the source and the date, bestie, we do not gatekeep the metadata 🫶✨