get_subsampling_offset(9)

💅 get_subsampling_offset — Kernel API Manual ✨

okay so bestie, you're looking at get_subsampling_offset(9) and honestly? she's a little icon. this function hands you back an offset that keeps the chroma siting consistent no matter what x_start and y_start you rolled up with. like, the vibes stay aligned. periodt. 🎀

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🌸 NAME 🌸

get_subsampling_offset — an offset for keeping the chroma siting consistent regardless of x_start and y_start values 🦋

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✨ SYNOPSIS ✨

int get_subsampling_offset (enum pixel_read_direction direction , int x_start , int y_start );

like yes, she returns an int, and yes, that's three whole arguments. we love a signature that eats. 💅

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🫶 ARGUMENTS 🫶

• direction — the direction of the reading, so this offset can be computed properly. it's giving "which way are we going" energy. 🧭
• x_start — the x coordinate of the starting point of the readed line 👑
• y_start — the y coordinate of the starting point of the readed line 🍓

ngl the original really does say "readed line" and honestly? she said what she said. keeping it fr fr. 😭

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💖 SEE ALSO 💖

the whole friend group, no cap. go say hi:

• Kernel file ./drivers/gpu/drm/vkms/vkms_formats.c — her home address 🏠
• packed_pixels_offset(9)
• packed_pixels_addr(9)
• get_block_step_bytes(9)
• packed_pixels_addr_1x1(9)
• get_subsampling(9)
• READ_LINE(9)
• READ_LINE_ARGB8888(9)
• READ_LINE_le16161616(9)
• READ_LINE_YUV_SEMIPLANAR(9)
• vkms_writeback_row(9)
• get_pixel_read_line_function(9)
• swap_uv_columns(9)
• get_conversion_matrix_to_argb_u16(9)
• get_pixel_write_function(9)

like, the crossover episode everyone asked for. 🔥🌈

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mwah 💋 this page lives in ./drivers/gpu/drm/vkms and she was stamped October 2026 — go off, queen. ⭐👑