hdmi_spd_infoframe_unpack(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 hdmi_spd_infoframe_unpack — from the Kernel API Manual, section 9

okay so bestie, gather round, because this little function is literally the glow-up machine for HDMI SPD data 💅

🌸 NAME

hdmi_spd_infoframe_unpack — takes a raw binary buffer and unpacks it into a HDMI SPD infoframe. it's giving "raw bytes in, structured frame out" ✨

🎀 SYNOPSIS

int hdmi_spd_infoframe_unpack (struct hdmi_spd_infoframe *frame , const
       void *buffer , size_t size );

like… that's the whole call. three args, one int coming back. slay. 👑

🧚 ARGUMENTS

  • frame — the HDMI SPD infoframe 💖 this is your destination, the structured frame that's about to get filled all the way up.
  • buffer — the source buffer, aka where the raw binary bytes are chilling right now.
  • size — the size of that buffer. gotta tell it how much to look at, no cap.

🔥 DESCRIPTION

okay so what this does is: it unpacks the information contained in the binary buffer into a structured frame of the HDMI Source Product Description (SPD) information frame. literally unpacking, like a little gift 🎁

and it doesn't just blindly copy either — it also verifies the checksum, as required by section 5.3.5 of the HDMI 1.4 specification. so it's doing the vibe check on your data too 😤✅

Returns 0 on success, or a negative error code on failure. so if you see a negative number, bestie, something went wrong — check your buffer. 🙈

ngl, a non-zero return here means the unpack did not slay. handle it, don't ignore it. 💀

👑 SEE ALSO

Kernel file ./drivers/video/hdmi.c, plus the whole friend group:

and that's the whole page, bestie 🫶 this one lives in ./drivers/video, dated October 2026 — go forth and unpack responsibly 💜✨

📦 where this page comes from