STRUCT GSC_INPUT_BUF(9)

💖 struct gsc_input_buf — the driver's video buffer 💖

Okay so this is a page from the Kernel API Manual, bestie, and it's genuinely short and sweet — it's all about struct gsc_input_buf(9), which the manpage literally calls "the driver's video buffer". That's it, that's the whole vibe. It's the thing that holds your video frame while the G-Scaler does its little glow-up on it. ✨

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🌸 NAME 🌸

struct gsc_input_buf — the driver's video buffer, periodt. 🎀

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🦋 SYNOPSIS 🦋

Here's the whole struct, exactly as it lives, no cap:

struct gsc_input_buf {
    struct vb2_v4l2_buffer vb;
    struct list_head        list;
    int idx;
 };

That's three whole members. Not me being obsessed with a three-member struct, but like... it's iconic in its minimalism. 💅

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👑 Members 👑

These are the good bits, one by one:

• vb — the videobuf2 buffer. This is the actual video buffer payload, the main character of the whole struct. 🌈
• list — a linked list structure for buffer queue. Lowkey the glue that keeps everything chained together in the queue. 🔗
• idx — index of G-Scaler input buffer. Just a lil int telling you which slot this buffer is chillin' in. ⭐

Fr fr, that's every single member — there's no secret fourth one hiding down there. If it's not in the struct above, it doesn't exist. 🙈

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🫶 SEE ALSO 🫶

The Kernel file holding the real ones is:

./drivers/media/platform/samsung/exynos-gsc/gsc-core.h

And it wants you to go meet the whole friend group — enum gsc_datapath(9), struct gsc_fmt(9), struct gsc_addr(9), struct gsc_scaler(9), struct gsc_frame(9), struct gsc_m2m_device(9), struct gsc_pix_max(9), struct gsc_pix_min(9), struct gsc_driverdata(9), struct gsc_dev(9), and struct gsc_ctx(9). Go say hi, they don't bite. 💜

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💀 Sign-off 💀

This lil beauty comes to you from ./drivers/media/platform/samsu... (yes the footer truncates it like that, blame the terminal width 😭) and it's dated October 2026. Anyway bestie, go forth and scale those G's. Slay. 🧚‍♀️🔥🍓