STRUCT MTK_MDP_FMT(9)

💅 struct mtk_mdp_fmt — the driver's internal color format data ✨

okay so this is from the Kernel API Manual, and bestie, it's literally the little struct that holds the driver's own private notes about a color format 🎀 no cap, it's the backstage pass to how MediaTek's MDP driver thinks about pixels.

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🌸 NAME 🌸

struct mtk_mdp_fmt — the driver's internal color format data. that's it, that's the vibe 💖

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✨ SYNOPSIS ✨

struct mtk_mdp_fmt {
    u32 pixelformat;
    u16 num_planes;
    u16 num_comp;
    u8 depth[VIDEO_MAX_PLANES];
    u8 row_depth[VIDEO_MAX_PLANES];
    u32 flags;
    struct mtk_mdp_pix_align *align;
 };

like, look at her. seven fields. main character energy 👑

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🦋 Members 🦋

• pixelformat — the fourcc code for this format, and it's 0 if not applicable 💫 iykyk, if it's zero it's giving "this format isn't a thing here".
• num_planes — number of physically non-contiguous data planes 🍓 like, how many separate chunks of memory the data actually lives in.
• num_comp — number of logical data planes 🌸 logical, not physical — do not mix these up bestie, they are not the same number and the driver keeps them straight.
• depth — per plane driver's private 'number of bits per pixel' ✨ it's an array over the planes, one private lil depth value each.
• row_depth — per plane driver's private 'number of bits per pixel per row' 🔥 yes, per row this time, not per pixel. the driver's private business, again per plane.
• flags — flags indicating which operation mode format applies to 🎀 the two icons are:
  • MTK_MDP_FMT_FLAG_OUTPUT is used in OUTPUT stream
  • MTK_MDP_FMT_FLAG_CAPTURE is used in CAPTURE stream

ngl these flags are the whole mood — they tell you which stream the format belongs to, and you genuinely cannot skip reading them 💅

• align — pointer to a pixel alignment struct, NULL if using default value 🧚 so if it's NULL don't panic, that just means "defaults, bestie".

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💜 SEE ALSO 💜

Kernel file ./drivers/media/platform/mediatek/mdp/mtk_mdp_core.h, plus the whole friend group: struct mtk_mdp_pix_align(9), struct mtk_mdp_addr(9), struct mtk_mdp_frame(9), struct mtk_mdp_variant(9), struct mtk_mdp_dev(9), struct mtk_mdp_ctx(9) 🌈 — go read them, they all hang out together fr fr.

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ok that's the whole page, no notes 💀 every field accounted for, nothing skipped, we ate and left no crumbs 🫶

sourced from ./drivers/media/platform/media..., October 2026 — and yeah, this is struct mtk_mdp_fmt(9) signing off, mwah 💋