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/*
* Copyright (C) 2015 - 2017 Intel Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _OBGRID_PUBLIC_H_
#define _OBGRID_PUBLIC_H_
/** @file
* CSS-API header file for 2500/Skycam black level correction (optical black, OB) kernel.
*
* This file contains Configuration parameters for grid-based black level correction
*/
#define IA_CSS_OBGRID_TILE_SIZE 16
/** width; max grid size is derived from the max frame size as seen from obgrid perspective (4618x3464) */
#define IA_CSS_OBGRID_MAX_GRID_WIDTH 146
/** height; max grid size is derived from the max frame size as seen from obgrid perspective (4618x3464) */
#define IA_CSS_OBGRID_MAX_GRID_HEIGHT 110
/** size; max grid size is derived from the max frame size as seen from obgrid perspective (4618x3464) */
#define IA_CSS_OBGRID_MAX_GRID_SIZE (IA_CSS_OBGRID_MAX_GRID_WIDTH * IA_CSS_OBGRID_MAX_GRID_HEIGHT)
/**
* Description of the struct members:
*
* - tile_size: Width and height of a single grid tile.
* Valid value is IA_CSS_OBGRID_TILE_SIZE. Any other value is not supported.
* This field is provided for future extensions only. The tile size is
* given as a number of pixels of the same bayer color. For example, a
* 16x16 tile size covers a 32x32 area in the image.
*
* - x_offset: X value of the top-left grid point relative to ROI.
* - y_offset: Y value of the top-left grid point relative to ROI.
* Valid value is 0. Any other value is not supported.
* These fields are provided for future extensions only.
*
* - table_width: Width of the grid.
* Valid values are between 1 and IA_CSS_OBGRID_MAX_GRID_WIDTH.
* - table_height: Heigth of the grid.
* Valid values are between 1 and IA_CSS_OBGRID_MAX_GRID_HEIGHT.
* To cover the entire image, the width and height must be at least
* image_size/tile_size + 1. If the grid is not wide or high enough,
* then it will be extended by repeating the right or bottom elements.
*
* - table_GR: Grid table values for color Gr.
* - table_R: Grid table values for color R.
* - table_B: Grid table values for color B.
* - table_GB: Grid table values for color Gb.
* Valid values are between 0 and (2^N)-1, where N is the ISP bit width
* minus 1. On skycam, N is 11 bits. Each table must contain at least
* table_width*table_height valid elements, in row-major order.
*/
struct ia_css_2500_obgrid_kernel_config
{
int x_offset; /**< X offset of the grid origin */
int y_offset; /**< Y offset of the grid origin */
int tile_size; /**< Grid tile size */
int table_width; /**< Grid width */
int table_height; /**< Grid height */
short table_GR[IA_CSS_OBGRID_MAX_GRID_SIZE]; /**< Grid values for Gr */
short table_R [IA_CSS_OBGRID_MAX_GRID_SIZE]; /**< Grid values for R */
short table_B [IA_CSS_OBGRID_MAX_GRID_SIZE]; /**< Grid values for B */
short table_GB[IA_CSS_OBGRID_MAX_GRID_SIZE]; /**< Grid values for Gb */
};
#endif /* _OBGRID_PUBLIC_H_ */
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