STRUCT V4L2_SDR_FORMAT(9)

🌸 struct v4l2_sdr_format 💅

okay bestie so this is the Kernel API Manual page for struct v4l2_sdr_format — yes it's from the Linux kernel docs and yes it is iconic in a deeply nerdy way 🫶 no cap.

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✨ NAME ✨

struct v4l2_sdr_format — the SDR format definition, aka the little struct that tells you what your Software Defined Radio data is actually shaped like 💖

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🎀 SYNOPSIS 🎀

struct v4l2_sdr_format {
    __u32 pixelformat;
    __u32 buffersize;
    __u8 reserved[24];
 };

literally the whole thing. three members and a vibe check, periodt 💅

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🦋 Members 🦋

• pixelformat — a little endian four character code (fourcc) 🍓 like bestie, yes, it's called "pixelformat" even though this is SDR. don't question it, just vibe with it.
• buffersize — the maximum size in bytes required for data 🔥 this is the "how much room do I need" number, and you will want to respect it.
• reserved — drivers and applications must zero this array 🌈 not optional, not a suggestion, zero it. it's giving "fill in your name on the test", fr fr ✨

ngl the reserved one is the classic kernel-struct rule: don't put anything in it, don't read anything meaningful out of it, just zero it and move on 🙈

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👑 SEE ALSO 👑

the kernel file is ./include/uapi/linux/videodev2.h — go touch grass there if you want the full lore 🌸 and also peep these absolute main characters:

• struct v4l2_capability(9)
• struct v4l2_plane(9)
• struct v4l2_buffer(9)
• v4l2_timeval_to_ns(9)
• struct v4l2_exportbuffer(9)
• struct v4l2_selection(9)
• struct v4l2_plane_pix_format(9)
• struct v4l2_pix_format_mplane(9)
• struct v4l2_meta_format(9)
• struct v4l2_format(9)
• struct v4l2_event_motion_det(9)
• struct v4l2_create_buffers(9)
• struct v4l2_remove_buffers(9)

the way that's a whole friend group of structs 😭 obsessed.

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and that's the page, bestie!! 🧚 source situation: ./include/uapi/linux, dated October 2026, and the manual entry itself is struct v4l2_sdr_format(9) — slay, ate, no crumbs 💜⭐