snd_pcm_crea...er_hw_params(9)

💅 snd_pcm_create_iec958_consumer_hw_params (9) ✨

okay so bestie, welcome to the Kernel API Manual — yes, the kernel, yes, it's giving low-level greatness, but stay with me because this little function is honestly iconic and you're gonna slay it 🫶

🌸 NAME 🌸

snd_pcm_create_iec958_consumer_hw_params — creates the IEC958 channel status. that's it, that's the vibe ✨

🎀 SYNOPSIS 🎀

int snd_pcm_create_iec958_consumer_hw_params (struct snd_pcm_hw_params
*params , u8 *cs , size_t len );

🦋 ARGUMENTS 🦋

• params — the hw_params instance, aka the little info bag you pull the rate and sample format out of. main character energy honestly 💖
• cs — the channel status buffer. and listen, it needs to be at least four bytes, no cap. give it less and that's on you 😭
• len — the length of that channel status buffer. know your limits bestie, literally 🎀

⭐ DESCRIPTION ⭐

so what it does is: it creates the consumer format channel status data inside cs, with a maximum size of len, corresponding to the parameters of the PCM runtime runtime. cute, right? 🧚

and heads up — drivers may wish to tweak the contents of the buffer after creation. like, feel free to zhuzh it up afterwards, that's allowed 💅

ngl if your eyes tripped over "runtime runtime" in the original — yeah, it's written like that. we don't fix, we just report 🫶

🔥 RETURN 🔥

it returns the length of the buffer, or a negative error code if something failed. so if your number is negative, that's not a length bestie, that's a 💀 moment. check it.

🌈 SEE ALSO 🌈

• Kernel file ./sound/core/pcm_iec958.c — the source, go read it, iykyk 👑
• snd_pcm_create_iec958_consumer_default(9)
• snd_pcm_fill_iec958_consumer(9)
• snd_pcm_fill_iec958_consumer_hw_params(9)
• snd_pcm_create_iec958_consumer(9)

okay that's the whole page, you ate that 🍓 this gem lives in ./sound/core and the version on the label says October 2026, periodt 💜 go forth and make channel status data, bestie ✨🎀