snd_hdac_ext_cstream_assign(9)

✨ snd_hdac_ext_cstream_assign(9) — the Kernel API Manual era 💅

okay so bestie, we're in the Kernel API Manual today and the main character of this page is snd_hdac_ext_cstream_assign 🎀 she's a kernel function, she's got a whole hyphenated name, and she's here to hand out host streams to compress streams. no cap.

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🌸 NAME 🌸

snd_hdac_ext_cstream_assign — assign a host stream for compress ✨

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💖 SYNOPSIS 💖

struct hdac_ext_stream * snd_hdac_ext_cstream_assign (struct hdac_bus
*bus , struct snd_compr_stream *cstream );

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🦋 ARGUMENTS 🦋

• bus — the HD-audio core bus, periodt. that's the whole vibe. 💫
• cstream — the compress stream you want to assign. say less, we're on it 🫶

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🎀 DESCRIPTION 🎀

so what she actually does: she assigns an unused host stream for the given compress stream 🔥 literally just finds one that's free and hands it over. main character energy fr.

and if no stream is free? she returns NULL. no drama, no crash, just NULL 😭 that's the vibe check.

one lil detail iykyk: the stream is decoupled before assignment 🧚 lowkey important, highkey iconic. don't sleep on it.

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👑 SEE ALSO 👑

• Kernel file ./sound/hda/core/ext/stream.c — that's the source, go read her 💜
• snd_hdac_ext_host_stream_setup(9)
• snd_hdac_apl_host_stream_setup(9)
• snd_hdac_ext_stream_init(9)
• snd_hdac_ext_stream_init_all(9)
• snd_hdac_ext_stream_free_all(9)
• snd_hdac_ext_stream_decouple(9)
• snd_hdac_ext_stream_start(9)
• snd_hdac_ext_stream_clear(9)
• snd_hdac_ext_stream_reset(9)
• snd_hdac_ext_stream_setup(9)
• snd_hdac_ext_stream_assign(9)
• snd_hdac_ext_stream_release(9)

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🍓 ok that's the whole page, nothing skipped, we ate and left no crumbs 💅

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🌈 and that's a wrap, bestie! this cutie lives in ./sound/hda/core/ext, the date on the file is October 2026, and the manual name to cite is snd_hdac_ext_cstream_assign(9) — slay, go forth and assign those streams ⭐ 🦋