drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/macc/macc_1.0/ia_css_macc_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_MACC_TYPES_H
  16 #define __IA_CSS_MACC_TYPES_H
  17
  18 /* @file
  19 * CSS-API header file for Multi-Axis Color Correction (MACC) parameters.
  20 */
  21
  22 /* Number of axes in the MACC table. */
  23 #define IA_CSS_MACC_NUM_AXES           16
  24 /* Number of coefficients per MACC axes. */
  25 #define IA_CSS_MACC_NUM_COEFS          4
  26 /* The number of planes in the morphing table. */
  27
  28 /* Multi-Axis Color Correction (MACC) table.
  29  *
  30  *  ISP block: MACC1 (MACC by only matrix)
  31  *             MACC2 (MACC by matrix and exponent(ia_css_macc_config))
  32  *  ISP1: MACC1 is used.
  33  *  ISP2: MACC2 is used.
  34  *
  35  *  [MACC1]
  36  *   OutU = (data00 * InU + data01 * InV) >> 13
  37  *   OutV = (data10 * InU + data11 * InV) >> 13
  38  *
  39  *   default/ineffective:
  40  *   OutU = (8192 * InU +    0 * InV) >> 13
  41  *   OutV = (   0 * InU + 8192 * InV) >> 13
  42  *
  43  *  [MACC2]
  44  *   OutU = (data00 * InU + data01 * InV) >> (13 - exp)
  45  *   OutV = (data10 * InU + data11 * InV) >> (13 - exp)
  46  *
  47  *   default/ineffective: (exp=1)
  48  *   OutU = (4096 * InU +    0 * InV) >> (13 - 1)
  49  *   OutV = (   0 * InU + 4096 * InV) >> (13 - 1)
  50  */
  51
  52 struct ia_css_macc_table {
  53         int16_t data[IA_CSS_MACC_NUM_COEFS * IA_CSS_MACC_NUM_AXES];
  54         /** 16 of 2x2 matix
  55           MACC1: s2.13, [-65536,65535]
  56             default/ineffective:
  57                 16 of "identity 2x2 matix" {8192,0,0,8192}
  58           MACC2: s[macc_config.exp].[13-macc_config.exp], [-8192,8191]
  59             default/ineffective: (s1.12)
  60                 16 of "identity 2x2 matix" {4096,0,0,4096} */
  61 };
  62
  63 #endif /* __IA_CSS_MACC_TYPES_H */