ir_raw_gen_pd(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ir_raw_gen_pd(9) 💅

okay so bestie, welcome to the Kernel API Manual — specifically the page for ir_raw_gen_pd, which is literally the function that encodes your data into raw events using pulse-distance modulation. yes, that kind of infrared vibe. iykyk. 🦋

✨ NAME ✨

ir_raw_gen_pd — Encode data to raw events with pulse-distance modulation.

like, it takes your bits and turns them into IR pulses and spaces. iconic behavior honestly. 🎀

🌸 SYNOPSIS 🌸

int ir_raw_gen_pd (struct ir_raw_event **ev , unsigned int max , const
       struct ir_raw_timings_pd *timings , unsigned int n , u64 data );

copy it exactly bestie, no typos, the compiler does NOT forgive 💀

🫶 ARGUMENTS 🫶

  • ev — Pointer to pointer to next free event. *ev gets incremented for each raw event filled. it's giving "the cursor moves as you write" energy ✨
  • max — Maximum number of raw events to fill. the ceiling. the limit. the budget, if you will. 👑
  • timings — Pulse distance modulation timings. all the pulse-y/spacey numbers live here 💅
  • n — Number of bits of data. how many bits we're actually cooking with 🍓
  • data — Data bits to encode. the actual payload, the main character 😌

🔥 DESCRIPTION 🔥

So here's the tea: it encodes the n least significant bits of data using pulse-distance modulation, with all the timing characteristics described by timings, writing up to max raw IR events using the *ev pointer.

lowkey that's the whole thing. n bits go in, pulses come out, *ev keeps scooting forward. no cap, it's just that. 🌈

⭐ RETURN ⭐

  • 0 on success — slay, we ate, everything fit 💖
  • -ENOBUFS if there isn't enough space in the array to fit the full encoded data. and yes, in that case all max events will have been written — so it filled the whole thing up and then ran out of room 😭
bestie pls check your max before you call this, because -ENOBUFS means you already burned your entire buffer. not a drill. 🙈

🦋 SEE ALSO 🦋

Kernel file ./drivers/media/rc/rc-ir-raw.c, plus the whole friend group:

and that's the page!! 🧚 mwah 💋

sign-off ~ this little gem lives in ./drivers/media/rc and the date on the tin is October 2026. go forth and modulate, bestie 💜✨
📦 where this page comes from