STRUCT HDR_OUTPUT_METADATA(9)

🌈 struct hdr_output_metadata(9) — Kernel API Manual ✨

okay so bestie, we're in the Kernel API Manual and today's main character is struct hdr_output_metadata(9) — like, the literal struct. it's giving kernel-internals realness and honestly? obsessed. 🎀

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✨ NAME ✨

struct hdr_output_metadata — HDR output metadata 💖 like, the metadata for your HDR output, no cap.

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🦋 SYNOPSIS 🦋

here's the whole vibe, copied exactly because we do NOT play with code integrity in this house:

struct hdr_output_metadata {
    __u32 metadata_type;
    union {
      struct hdr_metadata_infoframe hdmi_metadata_type1;
    };
 };

look at that anonymous union just chilling there. iconic behavior fr. 💅

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🧚 Members 🧚

• metadata_type — this one's the Static_Metadata_Descriptor_ID. that's literally its whole job, bestie. 🫶
• {unnamed_union} — anonymous. yes, it has no name. yes, we respect it anyway. main character energy. 👑
• hdmi_metadata_type1 — this bad boy is the HDR Metadata Infoframe. that's the payload, that's the moment, that's the whole point. 🔥

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🌸 Description 🌸

so what IS this thing? it's Metadata Information to be passed from userspace. that's it. that's the whole description. short, sweet, and lowkey mysterious — it's giving "i said what i said" and honestly? slay. 💀✨

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💜 SEE ALSO 💜

okay this list is LONG but we are NOT skipping a single one, because every reference deserves its moment. iykyk:

• Kernel file ./include/uapi/drm/drm_mode.h overview(9)
• struct drm_mode_modeinfo(9)
• struct drm_mode_get_plane(9)
• struct drm_mode_get_connector(9)
• struct drm_mode_property_enum(9)
• struct drm_mode_get_property(9)
• struct drm_mode_fb_cmd2(9)
• enum drm_colorop_type(9)
• enum drm_colorop_lut3d_interpolation_type(9)
• enum drm_colorop_lut1d_interpolation_type(9)
• struct drm_plane_size_hint(9)
• struct hdr_metadata_infoframe(9)
• DRM_MODE_PAGE_FLIP_EVENT(9)
• DRM_MODE_PAGE_FLIP_ASYNC(9)
• DRM_MODE_PAGE_FLIP_FLAGS(9)
• struct drm_mode_create_dumb(9)
• DRM_MODE_ATOMIC_TEST_ONLY(9)
• DRM_MODE_ATOMIC_NONBLOCK(9)
• DRM_MODE_ATOMIC_ALLOW_MODESET(9)
• DRM_MODE_ATOMIC_FLAGS(9)
• struct drm_mode_create_blob(9)
• struct drm_mode_destroy_blob(9)
• struct drm_mode_create_lease(9)
• struct drm_mode_list_lessees(9)
• struct drm_mode_get_lease(9)
• struct drm_mode_revoke_lease(9)
• struct drm_mode_rect(9)
• struct drm_mode_closefb(9)

like, go read all of them. or don't. but they're there. 🍓

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ngl bestie, all of these live over in ./include/uapi/drm — that's the neighborhood. <rainbow>go explore</rainbow> 🧚

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and that's the page!! tysm for reading, mwah 💋 — this cutie came out of ./include/uapi/drm and is dated October 2026, and it's still filed under struct hdr_output_metadata(9) in case you need to find it again. periodt. 🌟💖