drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/bnlm/ia_css_bnlm_types.h

   1 /*
   2  * Support for Intel Camera Imaging ISP subsystem.
   3  * Copyright (c) 2015, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef __IA_CSS_BNLM_TYPES_H
  16 #define __IA_CSS_BNLM_TYPES_H
  17
  18 /* @file
  19 * CSS-API header file for Bayer Non-Linear Mean parameters.
  20 */
  21
  22 #include "type_support.h" /* int32_t */
  23
  24 /* Bayer Non-Linear Mean configuration
  25  *
  26  * \brief BNLM public parameters.
  27  * \details Struct with all parameters for the BNLM kernel that can be set
  28  * from the CSS API.
  29  *
  30  * ISP2.6.1: BNLM is used.
  31  */
  32 struct ia_css_bnlm_config {
  33         bool            rad_enable;     /** Enable a radial dependency in a weight calculation */
  34         int32_t         rad_x_origin;   /** Initial x coordinate for a radius calculation */
  35         int32_t         rad_y_origin;   /** Initial x coordinate for a radius calculation */
  36         /* a threshold for average of weights if this < Th, do not denoise pixel */
  37         int32_t         avg_min_th;
  38         /* minimum weight for denoising if max < th, do not denoise pixel */
  39         int32_t         max_min_th;
  40
  41         /**@{*/
  42         /* Coefficient for approximation, in the form of (1 + x / N)^N,
  43          * that fits the first-order exp() to default exp_lut in BNLM sheet
  44          * */
  45         int32_t         exp_coeff_a;
  46         uint32_t        exp_coeff_b;
  47         int32_t         exp_coeff_c;
  48         uint32_t        exp_exponent;
  49         /**@}*/
  50
  51         int32_t nl_th[3];       /** Detail thresholds */
  52
  53         /* Index for n-th maximum candidate weight for each detail group */
  54         int32_t match_quality_max_idx[4];
  55
  56         /**@{*/
  57         /* A lookup table for 1/sqrt(1+mu) approximation */
  58         int32_t mu_root_lut_thr[15];
  59         int32_t mu_root_lut_val[16];
  60         /**@}*/
  61         /**@{*/
  62         /* A lookup table for SAD normalization */
  63         int32_t sad_norm_lut_thr[15];
  64         int32_t sad_norm_lut_val[16];
  65         /**@}*/
  66         /**@{*/
  67         /* A lookup table that models a weight's dependency on textures */
  68         int32_t sig_detail_lut_thr[15];
  69         int32_t sig_detail_lut_val[16];
  70         /**@}*/
  71         /**@{*/
  72         /* A lookup table that models a weight's dependency on a pixel's radial distance */
  73         int32_t sig_rad_lut_thr[15];
  74         int32_t sig_rad_lut_val[16];
  75         /**@}*/
  76         /**@{*/
  77         /* A lookup table to control denoise power depending on a pixel's radial distance */
  78         int32_t rad_pow_lut_thr[15];
  79         int32_t rad_pow_lut_val[16];
  80         /**@}*/
  81         /**@{*/
  82         /* Non linear transfer functions to calculate the blending coefficient depending on detail group */
  83         /* detail group 0 */
  84         /**@{*/
  85         int32_t nl_0_lut_thr[15];
  86         int32_t nl_0_lut_val[16];
  87         /**@}*/
  88         /**@{*/
  89         /* detail group 1 */
  90         int32_t nl_1_lut_thr[15];
  91         int32_t nl_1_lut_val[16];
  92         /**@}*/
  93         /**@{*/
  94         /* detail group 2 */
  95         int32_t nl_2_lut_thr[15];
  96         int32_t nl_2_lut_val[16];
  97         /**@}*/
  98         /**@{*/
  99         /* detail group 3 */
 100         int32_t nl_3_lut_thr[15];
 101         int32_t nl_3_lut_val[16];
 102         /**@}*/
 103         /**@}*/
 104 };
 105
 106 #endif /* __IA_CSS_BNLM_TYPES_H */