drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/macc/macc1_5/ia_css_macc1_5_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_MACC1_5_TYPES_H
  16 #define __IA_CSS_MACC1_5_TYPES_H
  17
  18 /* @file
  19 * CSS-API header file for Multi-Axis Color Conversion algorithm parameters.
  20 */
  21
  22 /* Multi-Axis Color Conversion configuration
  23  *
  24  * ISP2.6.1: MACC1_5 is used.
  25  */
  26
  27
  28 /* Number of axes in the MACC table. */
  29 #define IA_CSS_MACC_NUM_AXES           16
  30 /* Number of coefficients per MACC axes. */
  31 #define IA_CSS_MACC_NUM_COEFS          4
  32
  33 /* Multi-Axes Color Correction (MACC) table.
  34  *
  35  *  ISP block: MACC (MACC by only matrix)
  36  *             MACC1_5 (MACC by matrix and exponent(ia_css_macc_config))
  37  *  ISP1: MACC is used.
  38  *  ISP2: MACC1_5 is used.
  39  *
  40  *  [MACC]
  41  *   OutU = (data00 * InU + data01 * InV) >> 13
  42  *   OutV = (data10 * InU + data11 * InV) >> 13
  43  *
  44  *   default/ineffective:
  45  *   OutU = (8192 * InU +    0 * InV) >> 13
  46  *   OutV = (   0 * InU + 8192 * InV) >> 13
  47  *
  48  *  [MACC1_5]
  49  *   OutU = (data00 * InU + data01 * InV) >> (13 - exp)
  50  *   OutV = (data10 * InU + data11 * InV) >> (13 - exp)
  51  *
  52  *   default/ineffective: (exp=1)
  53  *   OutU = (4096 * InU +    0 * InV) >> (13 - 1)
  54  *   OutV = (   0 * InU + 4096 * InV) >> (13 - 1)
  55  */
  56 struct ia_css_macc1_5_table {
  57         int16_t data[IA_CSS_MACC_NUM_COEFS * IA_CSS_MACC_NUM_AXES];
  58         /** 16 of 2x2 matix
  59           MACC1_5: s[macc_config.exp].[13-macc_config.exp], [-8192,8191]
  60             default/ineffective: (s1.12)
  61                 16 of "identity 2x2 matix" {4096,0,0,4096} */
  62 };
  63
  64 /* Multi-Axes Color Correction (MACC) configuration.
  65  *
  66  *  ISP block: MACC1_5 (MACC by matrix and exponent(ia_css_macc_config))
  67  *  ISP2: MACC1_5 is used.
  68  */
  69 struct ia_css_macc1_5_config {
  70         uint8_t exp;    /** Common exponent of ia_css_macc_table.
  71                                 u8.0, [0,13], default 1, ineffective 1 */
  72 };
  73
  74 #endif /* __IA_CSS_MACC1_5_TYPES_H */