v4l2_m2m_ctx_init(9)

📦 version 7.3.1, in nixpkgs unstable

✨ v4l2_m2m_ctx_init ✨

okay bestie, so this one's from the Kernel API Manual and it's literally all about v4l2_m2m_ctx_init — the little function that allocates and initializes a m2m context for you 💅 no cap

🌸 NAME 🌸

v4l2_m2m_ctx_init — allocate and initialize a m2m context 🎀

🦋 SYNOPSIS 🦋

struct v4l2_m2m_ctx * v4l2_m2m_ctx_init (struct v4l2_m2m_dev *m2m_dev ,
void *drv_priv , int (*queue_init)(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq) );

💖 ARGUMENTS 💖

  • m2m_dev — an opaque pointer to the internal data that handles the M2M context. it's giving "you don't need to know what's inside, just pass it along" energy 🙈
  • drv_priv — the driver's instance private data, aka your driver's own little stash of personal info 🫶
  • queue_init — a callback for the queue type-specific initialization function, the one you use for initializing vb2_queues. it's literally the function that gets your queues all set up ✨

👑 DESCRIPTION 👑

Usually called from the driver's open function. that's it, that's the whole vibe — you're opening the device, you need a context, boom, this is your girl 💅

🌈 SEE ALSO 🌈

Kernel file ./include/media/v4l2-mem2mem.h, plus the whole squad of structs:

  • struct v4l2_m2m_ops(9)
  • struct v4l2_m2m_queue_ctx(9)
  • struct v4l2_m2m_ctx(9)
  • struct v4l2_m2m_buffer(9)

and the friends, in order, no skips fr fr:

like, that's the whole group chat, every single one of them 💀

mwah 💋 this page lives in ./include/media and it's dated October 2026 — go off, future icon 👑✨

📦 where this page comes from