READ_LINE(9)

💖 NAME 💖

okay so, bestie, this is READ_LINE(9) from the Kernel API Manual, and she is literally a generic generator for a read_line function 🫶. You can use her for a format with one plane and a block_h == block_w == 1 ✨.

🌸 SYNOPSIS 🌸

READ_LINE (function_name , pixel_name , pixel_type , callback , ... );

Copy it exactly, spaces and all — we do not freelance this, periodt 💅.

🎀 ARGUMENTS 🎀

Here's the group-chat roll call, no cap:

• function_name — function name to generate ✨.
• pixel_name — temporary pixel name used in the __VA_ARGS__ parameters 🫶.
• pixel_type — used to specify the type you want to cast the pixel pointer 🎀.
• callback — callback to call for each pixels. This fonction should take __VA_ARGS__ as parameter and return a pixel_argb_u16 💖.
  • __VA_ARGS__: Argument to pass inside the callback. You can use pixel_name to access current pixel 🌸.
• ... — variable arguments 👑.

🔥 SEE ALSO 🔥

go read these too, iykyk 💜:

• Kernel file: ./drivers/gpu/drm/vkms/vkms_formats.c
• packed_pixels_offset(9)
• packed_pixels_addr(9)
• get_block_step_bytes(9)
• packed_pixels_addr_1x1(9)
• get_subsampling(9)
• get_subsampling_offset(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)

xoxo 💖 source/version: ./drivers/gpu/drm/vkms · date: October 2026 · page: READ_LINE(9) — mwah 💅