STRUCT V4L2_M2M_QUEUE_CTX(9)

📦 version 7.3.1, in nixpkgs unstable

💖 struct v4l2_m2m_queue_ctx(9) — from the Kernel API Manual ✨

okay bestie, sit down, we're learning about struct v4l2_m2m_queue_ctx today and honestly? it's giving organized chaos. this is the struct that represents a queue for buffers ready to be processed 🎀

🌸 NAME 🌸

struct v4l2_m2m_queue_ctx — the struct that represents a queue for buffers that are ready to be processed 💅

🦋 SYNOPSIS 🦋

struct v4l2_m2m_queue_ctx {
    struct vb2_queue        q;
    struct list_head        rdy_queue;
    spinlock_t rdy_spinlock;
    u8 num_rdy;
    bool buffered;
 };

no cap, that's the whole shape of it. now let's meet the members 🫶

✨ Members ✨

  • q — a pointer to struct vb2_queue. iconic little pointer, we love a reference.
  • rdy_queue — the list of V4L2 mem-to-mem queues. this is where the ready things chill.
  • rdy_spinlock — a spin lock whose whole job is protecting the struct usage. do not skip her, she's the bodyguard 💀
  • num_rdy — the number of buffers that are ready to be processed. literally just a count, bestie.
  • buffered — is the queue buffered? yes or no, that's the whole vibe check 🌈

🔥 Description 🔥

so the whole concept: it's a queue for buffers that are ready to be processed as soon as this instance receives access to the device ⭐ like a line of people waiting at the door, and the moment the venue opens, everyone's going in. main character energy, fr fr.

👑 SEE ALSO 👑

all the besties in the same friend group — from the Kernel file ./include/media/v4l2-mem2mem.h 💜

that's the whole page, bestie 🧚 this one came out of the ./include/media corner of the Kernel API Manual, dated October 2026 — ok that's actually kind of iconic, a future-dated manpage? we stan a time traveler 💖 bye, ily, go read the kernel source 🍓

📦 where this page comes from