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Diffstat (limited to 'include/ia_imaging/ia_ltm_types.h')
| -rw-r--r-- | include/ia_imaging/ia_ltm_types.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/include/ia_imaging/ia_ltm_types.h b/include/ia_imaging/ia_ltm_types.h new file mode 100644 index 0000000..0055c75 --- /dev/null +++ b/include/ia_imaging/ia_ltm_types.h @@ -0,0 +1,116 @@ +/* + * 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. + */ + +/*! + * \file ia_ltm_types.h + * \brief Definitions of input/output structures of the Intel local tone mapping library. + */ + +#ifndef _IA_LTM_TYPES_H_ +#define _IA_LTM_TYPES_H_ + +#include "ia_types.h" +#include <stdint.h> + +#define CONFIG_UNIT_LUT_SIZE_32 32 +#define NUM_TONE_MAP_PWL_SEGMENTS 7 /*!< Local curves in piece-wise-linear form (7 pieces)*/ +#define MAX_NUM_LUT 72500 /*!< Max. possible number of grids in GammaStar (145 x 500) */ + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct ia_ltm_t ia_ltm; + +/*! + * \brief New struct for LTM/DRC (local tone mapping/dynamic range compression), + * LTM is a algorithm for local tone mapping when sensor is in HDR mode + * LTM/DRC analysis algorithm is in CPU, applying LTM is a FW block called gamma. + */ +typedef enum +{ + ia_ltm_level_use_tuning = -1, /*!< Use LTM level defined in the tuning. */ + ia_ltm_level_bypass = 0, /*!< Bypass LTM (DRC) */ +} ia_ltm_level; + +/*! + * \brief Input image for LTM calculations. + */ +typedef struct +{ + ia_image_full_info image_info; /*!< Structure defining given image format, size and other characteristics. */ + const ia_binary_data *image_data; /*!< Input image buffer format, layout and size depends of width & height (and other paddings) defined in image_info structure above. */ +} ia_ltm_input_image; + +/*! + * \brief struct to hold LTM LUTs + * Local curves in pwl format as needed by GammaStar + * x & y indexes, slopes for each linear piece + */ +typedef struct ia_ltm_lut +{ + uint16_t points_x[NUM_TONE_MAP_PWL_SEGMENTS + 1]; /* UQ0.15 + 2^15(offset) */ + uint16_t slopes_a[NUM_TONE_MAP_PWL_SEGMENTS]; /* UQ8.8 */ + uint16_t points_y[NUM_TONE_MAP_PWL_SEGMENTS]; /* UQ0.15 */ +} ia_ltm_lut; + +/*! + * \brief struct to hold LTM results + * - Local LUTs + * - Number of blocks in each dimension + * - Average local gain (An estimate of overall local gains to be applied is needed for accurate denoising) + */ +typedef struct ia_ltm_results +{ + ia_ltm_lut ltm_luts[MAX_NUM_LUT]; /*!< Local look-up-tables */ + int grid_width; /*!< Grid width of LTM LUTs. */ + int grid_height; /*!< Grid height of LTM LUTs. */ + int block_size; /*!< Block size (width & height in pixels) to which LTM LUTs are applied. */ + float ltm_gain; /*!< LTM gain. */ +} ia_ltm_results; + +/*! +* \brief GTM parameters for DRC. +*/ +typedef struct ia_ltm_drc_gtm +{ + unsigned short gtm_bypass; + unsigned short xcu_gtm_offset_vec[CONFIG_UNIT_LUT_SIZE_32]; + short xcu_gtm_slope_vec[CONFIG_UNIT_LUT_SIZE_32]; + unsigned short xcu_gtm_x_cord_vec[CONFIG_UNIT_LUT_SIZE_32]; + unsigned short xcu_gtm_x_cord_max; + unsigned short xcu_gtm_exponent; + unsigned short xcu_gtm_slope_resolution; + unsigned short gtm_gain_frac_bit; +} ia_ltm_drc_gtm; + +/*! + * \brief LTM results from algorithms, passing to DRC in IPU4i HDR pipe. + */ +typedef struct ia_ltm_drc_params +{ + unsigned short gain_map[BXT_HDR_RGBY_GRID_MAX_NUM_ELEMENTS]; /*!< U15.gain_map is upscaled by bilateral, + applied to pixel-to-pixel in DRC FW block. */ + unsigned short weight_map[BXT_HDR_RGBY_GRID_MAX_NUM_ELEMENTS]; /*!< U15.weight_map is for computing similarity + inside DRC FW block. */ + ia_ltm_drc_gtm drc_gtm; /*! GTM parameters. */ +} ia_ltm_drc_params; + +#ifdef __cplusplus +} +#endif + +#endif /* _IA_LTM_TYPES_H_ */ |