STRUCT RKISP1_CIF_ISP_WDR_IREF_CONFIG(9)

💅 struct rkisp1_cif_isp_wdr_iref_config(9) — the Kernel API Manual glow-up 🎀

okay so bestie, we're in the Kernel API Manual today and the star of the show is struct rkisp1_cif_isp_wdr_iref_config — literally the Illumination reference config for WDR ✨ like that's her whole job and she ate 💅

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🌸 NAME 🌸

struct rkisp1_cif_isp_wdr_iref_config — Illumination reference config for WDR. no cap, that's the entire vibe 🦋

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✨ SYNOPSIS ✨

struct rkisp1_cif_isp_wdr_iref_config {
    __u8 rgb_factor;
    __u8 use_y9_8;
    __u8 use_rgb7_8;
    __u8 disable_transient;
};

four little __u8 besties, all in a row, all iconic 👑

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🎀 Members 🎀

• rgb_factor — this one defines how much influence the RGBmax approach has in comparison to Y (valid values are 0..8). so like, how much RGB is pulling up to the function vs. how much Y is just standing there 🫶
• use_y9_8 — use Y*9/8 for maximum value calculation along with the default of R, G, B for noise reduction 🔥
• use_rgb7_8 — decrease RGBMax by 7/8 for noise reduction. she's doing less, but make it noise reduction 💀
• disable_transient — disable transient calculation between Y and RGBY_max. it's giving "turn off the drama" 🙈

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💖 Description 💖

so instead of ONLY using the luminance (Y) value for tone mapping and gain calculations, you use the illumination reference value as described below — main character energy fr fr 👑

IRef = (rgb_factor * RGBMax_tr + (8 - rgb_factor) * Y)/8

that's the whole formula, copied exactly, no notes, she's perfect 🌈

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🦋 SEE ALSO 🦋

okay this part is LONG but we don't skip, we never skip, every single one is here and every single one matters 💜

• Kernel file ./include/uapi/linux/rkisp1-config.h
• enum rkisp1_cif_isp_version(9)
• enum rkisp1_cif_isp_exp_ctrl_autostop(9)
• enum rkisp1_cif_isp_exp_meas_mode(9)
• struct rkisp1_cif_isp_window(9)
• struct rkisp1_cif_isp_bls_fixed_val(9)
• struct rkisp1_cif_isp_bls_config(9)
• struct rkisp1_cif_isp_dpcc_methods_config(9)
• struct rkisp1_cif_isp_dpcc_config(9)
• struct rkisp1_cif_isp_gamma_corr_curve(9)
• struct rkisp1_cif_isp_gamma_curve_x_axis_pnts(9)
• struct rkisp1_cif_isp_sdg_config(9)
• struct rkisp1_cif_isp_lsc_config(9)
• struct rkisp1_cif_isp_ie_config(9)
• struct rkisp1_cif_isp_cproc_config(9)
• struct rkisp1_cif_isp_awb_meas_config(9)
• struct rkisp1_cif_isp_awb_gain_config(9)
• struct rkisp1_cif_isp_flt_config(9)
• struct rkisp1_cif_isp_bdm_config(9)
• struct rkisp1_cif_isp_ctk_config(9)
• struct rkisp1_cif_isp_goc_config(9)
• struct rkisp1_cif_isp_hst_config(9)
• struct rkisp1_cif_isp_aec_config(9)
• struct rkisp1_cif_isp_afc_config(9)
• enum rkisp1_cif_isp_dpf_gain_usage(9)
• enum rkisp1_cif_isp_dpf_rb_filtersize(9)
• enum rkisp1_cif_isp_dpf_nll_scale_mode(9)
• struct rkisp1_cif_isp_dpf_nll(9)
• struct rkisp1_cif_isp_dpf_rb_flt(9)
• struct rkisp1_cif_isp_dpf_g_flt(9)
• struct rkisp1_cif_isp_dpf_gain(9)
• struct rkisp1_cif_isp_dpf_config(9)
• struct rkisp1_cif_isp_dpf_strength_config(9)
• struct rkisp1_cif_isp_isp_other_cfg(9)
• struct rkisp1_cif_isp_isp_meas_cfg(9)
• struct rkisp1_params_cfg(9)
• struct rkisp1_cif_isp_compand_bls_config(9)
• struct rkisp1_cif_isp_compand_curve_config(9)
• struct rkisp1_cif_isp_wdr_tone_curve(9)
• struct rkisp1_cif_isp_wdr_config(9)
• enum rkisp1_cif_isp_cac_v_clip_mode(9)
• struct rkisp1_cif_isp_cac_config(9)
• struct rkisp1_cif_isp_awb_meas(9)
• struct rkisp1_cif_isp_awb_stat(9)
• struct rkisp1_cif_isp_bls_meas_val(9)
• struct rkisp1_cif_isp_ae_stat(9)
• struct rkisp1_cif_isp_af_meas_val(9)
• struct rkisp1_cif_isp_af_stat(9)
• struct rkisp1_cif_isp_hist_stat(9)
• struct rkisp1_cif_isp_stat(9)
• struct rkisp1_stat_buffer(9)
• enum rkisp1_ext_params_block_type(9)
• rkisp1_ext_params_block_header(9)
• struct rkisp1_ext_params_bls_config(9)
• struct rkisp1_ext_params_dpcc_config(9)
• struct rkisp1_ext_params_sdg_config(9)
• struct rkisp1_ext_params_lsc_config(9)
• struct rkisp1_ext_params_awb_gain_config(9)
• struct rkisp1_ext_params_flt_config(9)
• struct rkisp1_ext_params_bdm_config(9)
• struct rkisp1_ext_params_ctk_config(9)
• struct rkisp1_ext_params_goc_config(9)
• struct rkisp1_ext_params_dpf_config(9)
• struct rkisp1_ext_params_dpf_strength_config(9)
• struct rkisp1_ext_params_cproc_config(9)
• struct rkisp1_ext_params_ie_config(9)
• struct rkisp1_ext_params_awb_meas_config(9)
• struct rkisp1_ext_params_hst_config(9)
• struct rkisp1_ext_params_aec_config(9)
• struct rkisp1_ext_params_afc_config(9)
• struct rkisp1_ext_params_compand_bls_config(9)
• struct rkisp1_ext_params_compand_curve_config(9)
• struct rkisp1_ext_params_wdr_config(9)
• struct rkisp1_ext_params_cac_config(9)
• enum rkisp1_ext_param_buffer_version(9)
• struct rkisp1_ext_params_cfg(9)

like I said. every. single. one. 💅 slay.

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and that's the whole read, bestie — nothing dangerous in here, just a struct doing her little WDR thing 🧚

mwah 💋 this page lives in ./include/uapi/linux and it's dated October 2026, signed off by struct rkis..._iref_config(9) herself — periodt. 🎀✨