include/uapi/linux/media/raspberrypi/pisp_fe_statistics.h

   1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
   2 /*
   3  * RP1 PiSP Front End statistics definitions
   4  *
   5  * Copyright (C) 2021 - Raspberry Pi Ltd.
   6  *
   7  */
   8 #ifndef _UAPI_PISP_FE_STATISTICS_H_
   9 #define _UAPI_PISP_FE_STATISTICS_H_
  10
  11 #include <linux/types.h>
  12
  13 #define PISP_FLOATING_STATS_NUM_ZONES 4
  14 #define PISP_AGC_STATS_NUM_BINS 1024
  15 #define PISP_AGC_STATS_SIZE 16
  16 #define PISP_AGC_STATS_NUM_ZONES (PISP_AGC_STATS_SIZE * PISP_AGC_STATS_SIZE)
  17 #define PISP_AGC_STATS_NUM_ROW_SUMS 512
  18
  19 struct pisp_agc_statistics_zone {
  20         __u64 Y_sum;
  21         __u32 counted;
  22         __u32 pad;
  23 } __attribute__((packed));
  24
  25 struct pisp_agc_statistics {
  26         __u32 row_sums[PISP_AGC_STATS_NUM_ROW_SUMS];
  27         /*
  28          * 32-bits per bin means an image (just less than) 16384x16384 pixels
  29          * in size can weight every pixel from 0 to 15.
  30          */
  31         __u32 histogram[PISP_AGC_STATS_NUM_BINS];
  32         struct pisp_agc_statistics_zone floating[PISP_FLOATING_STATS_NUM_ZONES];
  33 } __attribute__((packed));
  34
  35 #define PISP_AWB_STATS_SIZE 32
  36 #define PISP_AWB_STATS_NUM_ZONES (PISP_AWB_STATS_SIZE * PISP_AWB_STATS_SIZE)
  37
  38 struct pisp_awb_statistics_zone {
  39         __u32 R_sum;
  40         __u32 G_sum;
  41         __u32 B_sum;
  42         __u32 counted;
  43 } __attribute__((packed));
  44
  45 struct pisp_awb_statistics {
  46         struct pisp_awb_statistics_zone zones[PISP_AWB_STATS_NUM_ZONES];
  47         struct pisp_awb_statistics_zone floating[PISP_FLOATING_STATS_NUM_ZONES];
  48 } __attribute__((packed));
  49
  50 #define PISP_CDAF_STATS_SIZE 8
  51 #define PISP_CDAF_STATS_NUM_FOMS (PISP_CDAF_STATS_SIZE * PISP_CDAF_STATS_SIZE)
  52
  53 struct pisp_cdaf_statistics {
  54         __u64 foms[PISP_CDAF_STATS_NUM_FOMS];
  55         __u64 floating[PISP_FLOATING_STATS_NUM_ZONES];
  56 } __attribute__((packed));
  57
  58 struct pisp_statistics {
  59         struct pisp_awb_statistics awb;
  60         struct pisp_agc_statistics agc;
  61         struct pisp_cdaf_statistics cdaf;
  62 } __attribute__((packed));
  63
  64 #endif /* _UAPI_PISP_FE_STATISTICS_H_ */