hdmi_vendor_infoframe_pack(9)

📦 version 7.3.1, in nixpkgs unstable

✨ NAME ✨

hdmi_vendor_infoframe_pack — check a HDMI Vendor infoframe, and write it to binary buffer 💅

okay so real quick, bestie — this whole page lives in the Kernel API Manual, and it's about one specific little function that does a lot: it vibes-checks your HDMI Vendor infoframe, then hands you back a tidy binary blob. icon behavior honestly.

🎀 SYNOPSIS 🎀

ssize_t hdmi_vendor_infoframe_pack (struct hdmi_vendor_infoframe *frame
, void *buffer , size_t size );

🦋 ARGUMENTS 🦋

  • frame — the HDMI Vendor infoframe itself, the main character of this whole operation 👑
  • buffer — the destination buffer, aka where the packed bytes are gonna live
  • size — the size of buffer, so we know how much room we're working with 🫶

🌸 DESCRIPTION 🌸

So here's the tea ☕ — this function first validates that the infoframe is consistent, and then it updates derived fields (like, for example, length) based on the other fields. Like it does a lil internal glow-up before the big moment. ✨

Then it packs all the info chillin' in the frame structure into a binary representation that can be written into the corresponding controller registers. Very demure, very register-ready. 💅

Oh and bestie, it also computes the checksum, as required by section 5.3.5 of the HDMI 1.4 specification — no cap, that part is mandatory. 🔥

It returns the number of bytes packed into the binary buffer, or a negative error code on failure. So like… if it returns something negative, that's your sign 😭 — something went wrong.

💀 SEE ALSO 💀

The kernel file is ./drivers/video/hdmi.c, and it comes with a whole friend group of related functions — not me listing all 30 of them, but here we are, and every single one is iconic in its own way 🫶:

and that's the whole page, bestie 💖 go pack those infoframes, you absolute legend 🧚

okay bye, this came from ./drivers/video, October 2026, and it's the Kernel API Manual — slay, periodt, go read the source 🎀⭐

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