media_get_pad_index(9)

💅 media_get_pad_index(9)

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for media_get_pad_index, and yes it's as niche as it sounds, but we're gonna slay it together 🫶

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✨ SYNOPSIS ✨

int media_get_pad_index (struct media_entity *entity , u32 pad_type ,
       enum media_pad_signal_type sig_type );

like, three args, one int back, no drama periodt 💅

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🎀 ARGUMENTS 🎀

• entity — the entity where the pads belong 🦋 this is your little home base, the thing we're digging around inside.
• pad_type — the type of the pad, one of MEDIA_PAD_FL_* pad types 👑 (yes, that literal family of flags, don't get creative with it).
• sig_type — type of signal of the pad to be search 🔍 i.e. which signal flavor we're out here looking for.

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🌸 DESCRIPTION 🌸

okay so. this helper function finds the first pad index inside an entity that satisfies both the is_sink and sig_type conditions. both. not one. both. it's giving picky and honestly? we respect it 😌

On success, return the pad number 💖 if the pad was not found or the media entity is a NULL pointer, return -EINVAL 💀 (yes, NULL entity gets you the same error as "nope, not here" — that's just how it is, no notes).

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🔥 SEE ALSO 🔥

literally the whole friend group, no cap:

• Kernel file ./include/media/media-entity.h
• enum media_gobj_type(9)
• struct media_gobj(9)
• struct media_entity_enum(9)
• struct media_graph(9)
• struct media_pipeline(9)
• struct media_pipeline_pad(9)
• struct media_pipeline_pad_iter(9)
• struct media_pipeline_entity_iter(9)
• struct media_link(9)
• enum media_pad_signal_type(9)
• struct media_pad(9)
• struct media_entity_operations(9)
• enum media_entity_type(9)
• struct media_entity(9)
• media_entity_for_each_pad(9)
• struct media_interface(9)
• struct media_intf_devnode(9)
• media_entity_id(9)
• media_type(9)
• media_id(9)
• media_gobj_gen_id(9)
• is_media_entity_v4l2_video_device(9)
• is_media_entity_v4l2_subdev(9)
• media_entity_enum_init(9)
• media_entity_enum_cleanup(9)
• media_entity_enum_zero(9)
• media_entity_enum_set(9)
• media_entity_enum_clear(9)
• media_entity_enum_test(9)
• media_entity_enum_test_and_set(9)
• media_entity_enum_empty(9)
• media_entity_enum_intersects(9)
• gobj_to_entity(9)
• gobj_to_pad(9)
• gobj_to_link(9)
• gobj_to_intf(9)
• intf_to_devnode(9)
• media_gobj_create(9)
• media_gobj_destroy(9)
• media_entity_pads_init(9)
• media_entity_cleanup(9)
• media_create_pad_link(9)
• media_create_pad_links(9)
• media_entity_remove_links(9)
• __media_entity_setup_link(9)
• media_entity_setup_link(9)
• media_entity_find_link(9)
• media_pad_remote_pad_first(9)
• media_pad_remote_pad_unique(9)
• media_entity_remote_pad_unique(9)
• media_entity_remote_source_pad_unique(9)
• media_pad_is_streaming(9)
• media_entity_is_streaming(9)
• media_entity_pipeline(9)
• media_pad_pipeline(9)
• media_entity_get_fwnode_pad(9)
• media_graph_walk_init(9)
• media_graph_walk_cleanup(9)
• media_graph_walk_start(9)
• media_graph_walk_next(9)
• media_pipeline_start(9)
• __media_pipeline_start(9)
• media_pipeline_stop(9)
• __media_pipeline_stop(9)
• media_pipeline_for_each_pad(9)
• media_pipeline_entity_iter_init(9)
• media_pipeline_entity_iter_cleanup(9)
• media_pipeline_for_each_entity(9)
• media_pipeline_alloc_start(9)
• media_devnode_create(9)
• media_devnode_remove(9)
• media_create_intf_link(9)
• __media_remove_intf_link(9)
• media_remove_intf_link(9)
• __media_remove_intf_links(9)
• media_remove_intf_links(9)
• media_entity_call(9)
• media_create_ancillary_link(9)
• __media_entity_next_link(9)
• for_each_media_entity_data_link(9)

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and that's the whole page, mwah 💋 signed off from ./include/media, dated October 2026, living in the Kernel API Manual — go forth and find those pads, bestie 🌈⭐