v4l2_m2m_buf_queue(9)

📦 version 7.3.1, in nixpkgs unstable

💅 v4l2_m2m_buf_queue(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's a lil function called v4l2_m2m_buf_queue, and ngl it's giving "small but crucial," the quiet main-character moment of the mem2mem pipeline ✨

🌸 NAME 🌸

v4l2_m2m_buf_queue — add a buffer to the proper ready buffers list. that's it, that's the whole job, and she does it flawlessly 💖

🦋 SYNOPSIS 🦋

void v4l2_m2m_buf_queue (struct v4l2_m2m_ctx *m2m_ctx , struct
vb2_v4l2_buffer *vbuf );

literally just two things in, no return value out — void said "i'm not giving you anything back, and that's on purpose" 💀

🎀 ARGUMENTS 🎀

  • m2m_ctx — the m2m context assigned to the instance, given to you by struct v4l2_m2m_ctx. she's the one holding the vibes for this instance 🫶
  • vbuf — a pointer to struct vb2_v4l2_buffer. yes bestie, a pointer, so keep that thing alive 🙈

⭐ DESCRIPTION ⭐

Call this from vb2_queue_ops->ops->buf_queue — that's the vb2_queue_ops callback, iykyk. that's the whole instruction: it's a callback-time function, so you call it from there, not wherever you feel like it 🧚

🔥 SEE ALSO 🔥

Kernel file ./include/media/v4l2-mem2mem.h, plus the whole friend group:

like, the entire extended friend group showed up to the group chat. iconic 👑

and that's the page!! 🍓 this lil slice of wisdom lives over in the kernel files under ./include/media, stamped October 2026 — mwah, love u, go queue those buffers bestie 💜🦋✨

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