STRUCT VB2_V4L2_BUFFER(9)

🎀 struct vb2_v4l2_buffer(9) 🎀

okay bestie, this is the Kernel API Manual page for struct vb2_v4l2_buffer, and it is literally here to describe video buffer information for v4l2 💖. no cap, every field in this thing has main character energy, so let's get into it.

💖 NAME 💖

struct vb2_v4l2_buffer — video buffer information for v4l2. periodt.

🌸 SYNOPSIS 🌸

       struct vb2_v4l2_buffer {
           struct vb2_buffer       vb2_buf;
           __u32 flags;
           __u32 field;
           struct v4l2_timecode    timecode;
           __u32 sequence;
           __s32 request_fd;
           bool is_held;
           struct vb2_plane        planes[VB2_MAX_PLANES];
        };

🎀 Members 🎀

• vb2_buf — embedded struct vb2_buffer. it's built in, bestie 🫶.
• flags — buffer informational flags.
• field — field order of the image in the buffer, as defined by enum v4l2_field.
• timecode — frame timecode.
• sequence — sequence count of this frame.
• request_fd — the request_fd associated with this buffer.
• is_held — if true, then this capture buffer was held.
• planes — plane information (userptr/fd, length, bytesused, data_offset).

🦋 Description 🦋

This struct should contain enough information to be able to cover all the fields of struct v4l2_buffer at videodev2.h. like, all of them 💅.

✨ SEE ALSO ✨

the kernel file ./include/media/videobuf2-v4l2.h is the home base, and the squad is:

• vb2_find_buffer(9)
• vb2_querybuf(9)
• vb2_reqbufs(9)
• vb2_create_bufs(9)
• vb2_prepare_buf(9)
• vb2_qbuf(9)
• vb2_expbuf(9)
• vb2_dqbuf(9)
• vb2_streamon(9)
• vb2_streamoff(9)
• vb2_queue_init(9)
• vb2_queue_init_name(9)
• vb2_queue_release(9)
• vb2_queue_change_type(9)
• vb2_poll(9)
• vb2_queue_is_busy(9)
• vb2_video_unregister_device(9)

xoxo, your kernel bestie 💖 — source is ./include/media, date is October 2026, and the title is struct vb2_v4l2_buffer(9). mwah 🫶✨