2.13.2. V4L2_META_FMT_IPU3_PARAMS (‘ip3p’), V4L2_META_FMT_IPU3_3A (‘ip3s’)

2.13.2.1. 3A statistics

The IPU3 ImgU 3A statistics accelerators collect different statistics over an input Bayer frame. Those statistics are obtained from the “ipu3-imgu [01] 3a stat” metadata capture video nodes, using the v4l2_meta_format interface. They are formatted as described by the ipu3_uapi_stats_3a structure.

The statistics collected are AWB (Auto-white balance) RGBS (Red, Green, Blue and Saturation measure) cells, AWB filter response, AF (Auto-focus) filter response, and AE (Auto-exposure) histogram.

The struct ipu3_uapi_4a_config saves all configurable parameters.

struct ipu3_uapi_stats_3a {
        struct ipu3_uapi_awb_raw_buffer awb_raw_buffer;
        struct ipu3_uapi_ae_raw_buffer_aligned ae_raw_buffer[IPU3_UAPI_MAX_STRIPES];
        struct ipu3_uapi_af_raw_buffer af_raw_buffer;
        struct ipu3_uapi_awb_fr_raw_buffer awb_fr_raw_buffer;
        struct ipu3_uapi_4a_config stats_4a_config;
        __u32 ae_join_buffers;
        __u8 padding[28];
        struct ipu3_uapi_stats_3a_bubble_info_per_stripe stats_3a_bubble_per_stripe;
        struct ipu3_uapi_ff_status stats_3a_status;
};

2.13.2.2. Pipeline parameters

The pipeline parameters are passed to the “ipu3-imgu [01] parameters” metadata output video nodes, using the v4l2_meta_format interface. They are formatted as described by the ipu3_uapi_params structure.

Both 3A statistics and pipeline parameters described here are closely tied to the underlying camera sub-system (CSS) APIs. They are usually consumed and produced by dedicated user space libraries that comprise the important tuning tools, thus freeing the developers from being bothered with the low level hardware and algorithm details.

struct ipu3_uapi_params {
        /* Flags which of the settings below are to be applied */
        struct ipu3_uapi_flags use;

        /* Accelerator cluster parameters */
        struct ipu3_uapi_acc_param acc_param;

        /* ISP vector address space parameters */
        struct ipu3_uapi_isp_lin_vmem_params lin_vmem_params;
        struct ipu3_uapi_isp_tnr3_vmem_params tnr3_vmem_params;
        struct ipu3_uapi_isp_xnr3_vmem_params xnr3_vmem_params;

        /* ISP data memory (DMEM) parameters */
        struct ipu3_uapi_isp_tnr3_params tnr3_dmem_params;
        struct ipu3_uapi_isp_xnr3_params xnr3_dmem_params;

        /* Optical black level compensation */
        struct ipu3_uapi_obgrid_param obgrid_param;
};

2.13.2.3. Intel IPU3 ImgU uAPI data types

struct ipu3_uapi_grid_config

Grid plane config

Definition

struct ipu3_uapi_grid_config {
  __u8 width;
  __u8 height;
  __u16 block_width_log2:3;
  __u16 block_height_log2:3;
  __u16 height_per_slice:8;
  __u16 x_start;
  __u16 y_start;
  __u16 x_end;
  __u16 y_end;
};

Members

width

Grid horizontal dimensions, in number of grid blocks(cells). For AWB, the range is (16, 80). For AF/AE, the range is (16, 32).

height

Grid vertical dimensions, in number of grid cells. For AWB, the range is (16, 60). For AF/AE, the range is (16, 24).

block_width_log2

Log2 of the width of each cell in pixels. For AWB, the range is [3, 6]. For AF/AE, the range is [3, 7].

block_height_log2

Log2 of the height of each cell in pixels. For AWB, the range is [3, 6]. For AF/AE, the range is [3, 7].

height_per_slice

The number of blocks in vertical axis per slice. Default 2.

x_start

X value of top left corner of Region of Interest(ROI).

y_start

Y value of top left corner of ROI

x_end

X value of bottom right corner of ROI

y_end

Y value of bottom right corner of ROI

Description

Due to the size of total amount of collected data, most statistics create a grid-based output, and the data is then divided into “slices”.

struct ipu3_uapi_awb_set_item

Memory layout for each cell in AWB

Definition

struct ipu3_uapi_awb_set_item {
  __u8 Gr_avg;
  __u8 R_avg;
  __u8 B_avg;
  __u8 Gb_avg;
  __u8 sat_ratio;
  __u8 padding0;
  __u8 padding1;
  __u8 padding2;
};

Members

Gr_avg

Green average for red lines in the cell.

R_avg

Red average in the cell.

B_avg

Blue average in the cell.

Gb_avg

Green average for blue lines in the cell.

sat_ratio

Percentage of pixels over the thresholds specified in ipu3_uapi_awb_config_s, coded from 0 to 255.

padding0

Unused byte for padding.

padding1

Unused byte for padding.

padding2

Unused byte for padding.

struct ipu3_uapi_awb_raw_buffer

AWB raw buffer

Definition

struct ipu3_uapi_awb_raw_buffer {
  struct ipu3_uapi_awb_set_item meta_data[IPU3_UAPI_AWB_MAX_BUFFER_SIZE] ;
};

Members

meta_data

buffer to hold auto white balance meta data which is the average values for each color channel.

struct ipu3_uapi_awb_config_s

AWB config

Definition

struct ipu3_uapi_awb_config_s {
  __u16 rgbs_thr_gr;
  __u16 rgbs_thr_r;
  __u16 rgbs_thr_gb;
  __u16 rgbs_thr_b;
  struct ipu3_uapi_grid_config grid;
};

Members

rgbs_thr_gr

gr threshold value.

rgbs_thr_r

Red threshold value.

rgbs_thr_gb

gb threshold value.

rgbs_thr_b

Blue threshold value.

grid

ipu3_uapi_grid_config, the default grid resolution is 16x16 cells.

Description

The threshold is a saturation measure range [0, 8191], 8191 is default. Values over threshold may be optionally rejected for averaging.

struct ipu3_uapi_awb_config

AWB config wrapper

Definition

struct ipu3_uapi_awb_config {
  struct ipu3_uapi_awb_config_s config ;
};

Members

config

config for auto white balance as defined by ipu3_uapi_awb_config_s

struct ipu3_uapi_ae_raw_buffer

AE global weighted histogram

Definition

struct ipu3_uapi_ae_raw_buffer {
  __u32 vals[IPU3_UAPI_AE_BINS * IPU3_UAPI_AE_COLORS];
};

Members

vals

Sum of IPU3_UAPI_AE_COLORS in cell

Description

Each histogram contains IPU3_UAPI_AE_BINS bins. Each bin has 24 bit unsigned for counting the number of the pixel.

struct ipu3_uapi_ae_raw_buffer_aligned

AE raw buffer

Definition

struct ipu3_uapi_ae_raw_buffer_aligned {
  struct ipu3_uapi_ae_raw_buffer buff ;
};

Members

buff

ipu3_uapi_ae_raw_buffer to hold full frame meta data.

struct ipu3_uapi_ae_grid_config

AE weight grid

Definition

struct ipu3_uapi_ae_grid_config {
  __u8 width;
  __u8 height;
  __u8 block_width_log2:4;
  __u8 block_height_log2:4;
  __u8 reserved0:5;
  __u8 ae_en:1;
  __u8 rst_hist_array:1;
  __u8 done_rst_hist_array:1;
  __u16 x_start;
  __u16 y_start;
  __u16 x_end;
  __u16 y_end;
};

Members

width

Grid horizontal dimensions. Value: [16, 32], default 16.

height

Grid vertical dimensions. Value: [16, 24], default 16.

block_width_log2

Log2 of the width of the grid cell, value: [3, 7].

block_height_log2

Log2 of the height of the grid cell, value: [3, 7]. default is 3 (cell size 8x8), 4 cell per grid.

reserved0

reserved

ae_en

0: does not write to ipu3_uapi_ae_raw_buffer_aligned array, 1: write normally.

rst_hist_array

write 1 to trigger histogram array reset.

done_rst_hist_array

flag for histogram array reset done.

x_start

X value of top left corner of ROI, default 0.

y_start

Y value of top left corner of ROI, default 0.

x_end

X value of bottom right corner of ROI

y_end

Y value of bottom right corner of ROI

Description

The AE block accumulates 4 global weighted histograms(R, G, B, Y) over a defined ROI within the frame. The contribution of each pixel into the histogram, defined by ipu3_uapi_ae_weight_elem LUT, is indexed by a grid.

struct ipu3_uapi_ae_weight_elem

AE weights LUT

Definition

struct ipu3_uapi_ae_weight_elem {
  __u32 cell0:4;
  __u32 cell1:4;
  __u32 cell2:4;
  __u32 cell3:4;
  __u32 cell4:4;
  __u32 cell5:4;
  __u32 cell6:4;
  __u32 cell7:4;
};

Members

cell0

weighted histogram grid value.

cell1

weighted histogram grid value.

cell2

weighted histogram grid value.

cell3

weighted histogram grid value.

cell4

weighted histogram grid value.

cell5

weighted histogram grid value.

cell6

weighted histogram grid value.

cell7

weighted histogram grid value.

Description

Use weighted grid value to give a different contribution factor to each cell. Precision u4, range [0, 15].

struct ipu3_uapi_ae_ccm

AE coefficients for WB and CCM

Definition

struct ipu3_uapi_ae_ccm {
  __u16 gain_gr;
  __u16 gain_r;
  __u16 gain_b;
  __u16 gain_gb;
  __s16 mat[16];
};

Members

gain_gr

WB gain factor for the gr channels. Default 256.

gain_r

WB gain factor for the r channel. Default 256.

gain_b

WB gain factor for the b channel. Default 256.

gain_gb

WB gain factor for the gb channels. Default 256.

mat

4x4 matrix that transforms Bayer quad output from WB to RGB+Y.

Description

Default:

128, 0, 0, 0, 0, 128, 0, 0, 0, 0, 128, 0, 0, 0, 0, 128,

As part of the raw frame pre-process stage, the WB and color conversion need to be applied to expose the impact of these gain operations.

struct ipu3_uapi_ae_config

AE config

Definition

struct ipu3_uapi_ae_config {
  struct ipu3_uapi_ae_grid_config grid_cfg ;
  struct ipu3_uapi_ae_weight_elem weights[IPU3_UAPI_AE_WEIGHTS] ;
  struct ipu3_uapi_ae_ccm ae_ccm ;
};

Members

grid_cfg

config for auto exposure statistics grid. See struct ipu3_uapi_ae_grid_config, as Imgu did not support output auto exposure statistics, so user can ignore this configuration and use the RGB table in auto-whitebalance statistics instead.

weights

IPU3_UAPI_AE_WEIGHTS is based on 32x24 blocks in the grid. Each grid cell has a corresponding value in weights LUT called grid value, global histogram is updated based on grid value and pixel value.

ae_ccm

Color convert matrix pre-processing block.

Description

Calculate AE grid from image resolution, resample ae weights.

struct ipu3_uapi_af_filter_config

AF 2D filter for contrast measurements

Definition

struct ipu3_uapi_af_filter_config {
  struct {
    __u8 a1;
    __u8 a2;
    __u8 a3;
    __u8 a4;
  } y1_coeff_0;
  struct {
    __u8 a5;
    __u8 a6;
    __u8 a7;
    __u8 a8;
  } y1_coeff_1;
  struct {
    __u8 a9;
    __u8 a10;
    __u8 a11;
    __u8 a12;
  } y1_coeff_2;
  __u32 y1_sign_vec;
  struct {
    __u8 a1;
    __u8 a2;
    __u8 a3;
    __u8 a4;
  } y2_coeff_0;
  struct {
    __u8 a5;
    __u8 a6;
    __u8 a7;
    __u8 a8;
  } y2_coeff_1;
  struct {
    __u8 a9;
    __u8 a10;
    __u8 a11;
    __u8 a12;
  } y2_coeff_2;
  __u32 y2_sign_vec;
  struct {
    __u8 y_gen_rate_gr;
    __u8 y_gen_rate_r;
    __u8 y_gen_rate_b;
    __u8 y_gen_rate_gb;
  } y_calc;
  struct {
    __u32 reserved0:8;
    __u32 y1_nf:4;
    __u32 reserved1:4;
    __u32 y2_nf:4;
    __u32 reserved2:12;
  } nf;
};

Members

y1_coeff_0

filter Y1, structure: 3x11, support both symmetry and anti-symmetry type. A12 is center, A1-A11 are neighbours. for analyzing low frequency content, used to calculate sum of gradients in x direction.

y1_coeff_0.a1

filter1 coefficients A1, u8, default 0.

y1_coeff_0.a2

filter1 coefficients A2, u8, default 0.

y1_coeff_0.a3

filter1 coefficients A3, u8, default 0.

y1_coeff_0.a4

filter1 coefficients A4, u8, default 0.

y1_coeff_1

Struct

y1_coeff_1.a5

filter1 coefficients A5, u8, default 0.

y1_coeff_1.a6

filter1 coefficients A6, u8, default 0.

y1_coeff_1.a7

filter1 coefficients A7, u8, default 0.

y1_coeff_1.a8

filter1 coefficients A8, u8, default 0.

y1_coeff_2

Struct

y1_coeff_2.a9

filter1 coefficients A9, u8, default 0.

y1_coeff_2.a10

filter1 coefficients A10, u8, default 0.

y1_coeff_2.a11

filter1 coefficients A11, u8, default 0.

y1_coeff_2.a12

filter1 coefficients A12, u8, default 128.

y1_sign_vec

Each bit corresponds to one coefficient sign bit, 0: positive, 1: negative, default 0.

y2_coeff_0

Y2, same structure as Y1. For analyzing high frequency content.

y2_coeff_0.a1

filter2 coefficients A1, u8, default 0.

y2_coeff_0.a2

filter2 coefficients A2, u8, default 0.

y2_coeff_0.a3

filter2 coefficients A3, u8, default 0.

y2_coeff_0.a4

filter2 coefficients A4, u8, default 0.

y2_coeff_1

Struct

y2_coeff_1.a5

filter2 coefficients A5, u8, default 0.

y2_coeff_1.a6

filter2 coefficients A6, u8, default 0.

y2_coeff_1.a7

filter2 coefficients A7, u8, default 0.

y2_coeff_1.a8

filter2 coefficients A8, u8, default 0.

y2_coeff_2

Struct

y2_coeff_2.a9

filter1 coefficients A9, u8, default 0.

y2_coeff_2.a10

filter1 coefficients A10, u8, default 0.

y2_coeff_2.a11

filter1 coefficients A11, u8, default 0.

y2_coeff_2.a12

filter1 coefficients A12, u8, default 128.

y2_sign_vec

Each bit corresponds to one coefficient sign bit, 0: positive, 1: negative, default 0.

y_calc

Pre-processing that converts Bayer quad to RGB+Y values to be used for building histogram. Range [0, 32], default 8. Rule: y_gen_rate_gr + y_gen_rate_r + y_gen_rate_b + y_gen_rate_gb = 32 A single Y is calculated based on sum of Gr/R/B/Gb based on their contribution ratio.

y_calc.y_gen_rate_gr

Contribution ratio Gr for Y

y_calc.y_gen_rate_r

Contribution ratio R for Y

y_calc.y_gen_rate_b

Contribution ratio B for Y

y_calc.y_gen_rate_gb

Contribution ratio Gb for Y

nf

The shift right value that should be applied during the Y1/Y2 filter to make sure the total memory needed is 2 bytes per grid cell.

nf.reserved0

reserved

nf.y1_nf

Normalization factor for the convolution coeffs of y1, should be log2 of the sum of the abs values of the filter coeffs, default 7 (2^7 = 128).

nf.reserved1

reserved

nf.y2_nf

Normalization factor for y2, should be log2 of the sum of the abs values of the filter coeffs.

nf.reserved2

reserved

struct ipu3_uapi_af_raw_buffer

AF meta data

Definition

struct ipu3_uapi_af_raw_buffer {
  __u8 y_table[IPU3_UAPI_AF_Y_TABLE_MAX_SIZE] ;
};

Members

y_table

Each color component will be convolved separately with filter1 and filter2 and the result will be summed out and averaged for each cell.

struct ipu3_uapi_af_config_s

AF config

Definition

struct ipu3_uapi_af_config_s {
  struct ipu3_uapi_af_filter_config filter_config ;
  __u8 padding[4];
  struct ipu3_uapi_grid_config grid_cfg ;
};

Members

filter_config

AF uses Y1 and Y2 filters as configured in ipu3_uapi_af_filter_config

padding

paddings

grid_cfg

See ipu3_uapi_grid_config, default resolution 16x16. Use large grid size for large image and vice versa.

struct ipu3_uapi_awb_fr_raw_buffer

AWB filter response meta data

Definition

struct ipu3_uapi_awb_fr_raw_buffer {
  __u8 meta_data[IPU3_UAPI_AWB_FR_BAYER_TABLE_MAX_SIZE] ;
};

Members

meta_data

Statistics output on the grid after convolving with 1D filter.

struct ipu3_uapi_awb_fr_config_s

AWB filter response config

Definition

struct ipu3_uapi_awb_fr_config_s {
  struct ipu3_uapi_grid_config grid_cfg;
  __u8 bayer_coeff[6];
  __u16 reserved1;
  __u32 bayer_sign;
  __u8 bayer_nf;
  __u8 reserved2[7];
};

Members

grid_cfg

grid config, default 16x16.

bayer_coeff

1D Filter 1x11 center symmetry/anti-symmetry. coefficients defaults { 0, 0, 0, 0, 0, 128 }. Applied on whole image for each Bayer channel separately by a weighted sum of its 11x1 neighbors.

reserved1

reserved

bayer_sign

sign of filter coefficients, default 0.

bayer_nf

normalization factor for the convolution coeffs, to make sure total memory needed is within pre-determined range. NF should be the log2 of the sum of the abs values of the filter coeffs, range [7, 14], default 7.

reserved2

reserved

struct ipu3_uapi_4a_config

4A config

Definition

struct ipu3_uapi_4a_config {
  struct ipu3_uapi_awb_config_s awb_config ;
  struct ipu3_uapi_ae_grid_config ae_grd_config;
  __u8 padding[20];
  struct ipu3_uapi_af_config_s af_config;
  struct ipu3_uapi_awb_fr_config_s awb_fr_config ;
};

Members

awb_config

ipu3_uapi_awb_config_s, default resolution 16x16

ae_grd_config

auto exposure statistics ipu3_uapi_ae_grid_config

padding

paddings

af_config

auto focus config ipu3_uapi_af_config_s

awb_fr_config

ipu3_uapi_awb_fr_config_s, default resolution 16x16

struct ipu3_uapi_bubble_info

Bubble info for host side debugging

Definition

struct ipu3_uapi_bubble_info {
  __u32 num_of_stripes ;
  __u8 padding[28];
  __u32 num_sets;
  __u8 padding1[28];
  __u32 size_of_set;
  __u8 padding2[28];
  __u32 bubble_size;
  __u8 padding3[28];
};

Members

num_of_stripes

A single frame is divided into several parts called stripes due to limitation on line buffer memory. The separation between the stripes is vertical. Each such stripe is processed as a single frame by the ISP pipe.

padding

padding bytes.

num_sets

number of sets.

padding1

padding bytes.

size_of_set

set size.

padding2

padding bytes.

bubble_size

is the amount of padding in the bubble expressed in “sets”.

padding3

padding bytes.

struct ipu3_uapi_ff_status

Enable bits for each 3A fixed function

Definition

struct ipu3_uapi_ff_status {
  __u32 awb_en ;
  __u8 padding[28];
  __u32 ae_en;
  __u8 padding1[28];
  __u32 af_en;
  __u8 padding2[28];
  __u32 awb_fr_en;
  __u8 padding3[28];
};

Members

awb_en

auto white balance enable

padding

padding config

ae_en

auto exposure enable

padding1

padding config

af_en

auto focus enable

padding2

padding config

awb_fr_en

awb filter response enable bit

padding3

padding config

struct ipu3_uapi_stats_3a

3A statistics

Definition

struct ipu3_uapi_stats_3a {
  struct ipu3_uapi_awb_raw_buffer awb_raw_buffer;
  struct ipu3_uapi_ae_raw_buffer_aligned ae_raw_buffer[IPU3_UAPI_MAX_STRIPES];
  struct ipu3_uapi_af_raw_buffer af_raw_buffer;
  struct ipu3_uapi_awb_fr_raw_buffer awb_fr_raw_buffer;
  struct ipu3_uapi_4a_config stats_4a_config;
  __u32 ae_join_buffers;
  __u8 padding[28];
  struct ipu3_uapi_stats_3a_bubble_info_per_stripe stats_3a_bubble_per_stripe;
  struct ipu3_uapi_ff_status stats_3a_status;
};

Members

awb_raw_buffer

auto white balance meta data ipu3_uapi_awb_raw_buffer

ae_raw_buffer

auto exposure raw data ipu3_uapi_ae_raw_buffer_aligned current Imgu does not output the auto exposure statistics to ae_raw_buffer, the user such as 3A algorithm can use the RGB table in ipu3_uapi_awb_raw_buffer to do auto-exposure.

af_raw_buffer

ipu3_uapi_af_raw_buffer for auto focus meta data

awb_fr_raw_buffer

value as specified by ipu3_uapi_awb_fr_raw_buffer

stats_4a_config

4a statistics config as defined by ipu3_uapi_4a_config.

ae_join_buffers

1 to use ae_raw_buffer.

padding

padding config

stats_3a_bubble_per_stripe

a ipu3_uapi_stats_3a_bubble_info_per_stripe

stats_3a_status

3a statistics status set in ipu3_uapi_ff_status

struct ipu3_uapi_bnr_static_config_wb_gains_config

White balance gains

Definition

struct ipu3_uapi_bnr_static_config_wb_gains_config {
  __u16 gr;
  __u16 r;
  __u16 b;
  __u16 gb;
};

Members

gr

white balance gain for Gr channel.

r

white balance gain for R channel.

b

white balance gain for B channel.

gb

white balance gain for Gb channel.

Description

For BNR parameters WB gain factor for the three channels [Ggr, Ggb, Gb, Gr]. Their precision is U3.13 and the range is (0, 8) and the actual gain is Gx + 1, it is typically Gx = 1.

Pout = {Pin * (1 + Gx)}.

struct ipu3_uapi_bnr_static_config_wb_gains_thr_config

Threshold config

Definition

struct ipu3_uapi_bnr_static_config_wb_gains_thr_config {
  __u8 gr;
  __u8 r;
  __u8 b;
  __u8 gb;
};

Members

gr

white balance threshold gain for Gr channel.

r

white balance threshold gain for R channel.

b

white balance threshold gain for B channel.

gb

white balance threshold gain for Gb channel.

Description

Defines the threshold that specifies how different a defect pixel can be from its neighbors.(used by dynamic defect pixel correction sub block) Precision u4.4 range [0, 8].

struct ipu3_uapi_bnr_static_config_thr_coeffs_config

Noise model coefficients that controls noise threshold

Definition

struct ipu3_uapi_bnr_static_config_thr_coeffs_config {
  __u32 cf:13;
  __u32 reserved0:3;
  __u32 cg:5;
  __u32 ci:5;
  __u32 reserved1:1;
  __u32 r_nf:5;
};

Members

cf

Free coefficient for threshold calculation, range [0, 8191], default 0.

reserved0

reserved

cg

Gain coefficient for threshold calculation, [0, 31], default 8.

ci

Intensity coefficient for threshold calculation. range [0, 0x1f] default 6. format: u3.2 (3 most significant bits represent whole number, 2 least significant bits represent the fractional part with each count representing 0.25) e.g. 6 in binary format is 00110, that translates to 1.5

reserved1

reserved

r_nf

Normalization shift value for r^2 calculation, range [12, 20] where r is a radius of pixel [row, col] from centor of sensor. default 14.

Description

Threshold used to distinguish between noise and details.

struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config

Shading config

Definition

struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config {
  __u8 gr;
  __u8 r;
  __u8 b;
  __u8 gb;
};

Members

gr

Coefficient defines lens shading gain approximation for gr channel

r

Coefficient defines lens shading gain approximation for r channel

b

Coefficient defines lens shading gain approximation for b channel

gb

Coefficient defines lens shading gain approximation for gb channel

Description

Parameters for noise model (NM) adaptation of BNR due to shading correction. All above have precision of u3.3, default to 0.

struct ipu3_uapi_bnr_static_config_opt_center_config

Optical center config

Definition

struct ipu3_uapi_bnr_static_config_opt_center_config {
  __s32 x_reset:13;
  __u32 reserved0:3;
  __s32 y_reset:13;
  __u32 reserved2:3;
};

Members

x_reset

Reset value of X (col start - X center). Precision s12.0.

reserved0

reserved

y_reset

Reset value of Y (row start - Y center). Precision s12.0.

reserved2

reserved

Description

Distance from corner to optical center for NM adaptation due to shading correction (should be calculated based on shading tables)

struct ipu3_uapi_bnr_static_config_lut_config

BNR square root lookup table

Definition

struct ipu3_uapi_bnr_static_config_lut_config {
  __u8 values[IPU3_UAPI_BNR_LUT_SIZE];
};

Members

values

pre-calculated values of square root function.

Description

LUT implementation of square root operation.

struct ipu3_uapi_bnr_static_config_bp_ctrl_config

Detect bad pixels (bp)

Definition

struct ipu3_uapi_bnr_static_config_bp_ctrl_config {
  __u32 bp_thr_gain:5;
  __u32 reserved0:2;
  __u32 defect_mode:1;
  __u32 bp_gain:6;
  __u32 reserved1:18;
  __u32 w0_coeff:4;
  __u32 reserved2:4;
  __u32 w1_coeff:4;
  __u32 reserved3:20;
};

Members

bp_thr_gain

Defines the threshold that specifies how different a defect pixel can be from its neighbors. Threshold is dependent on de-noise threshold calculated by algorithm. Range [4, 31], default 4.

reserved0

reserved

defect_mode

Mode of addressed defect pixels, 0 - single defect pixel is expected, 1 - 2 adjacent defect pixels are expected, default 1.

bp_gain

Defines how 2nd derivation that passes through a defect pixel is different from 2nd derivations that pass through neighbor pixels. u4.2, range [0, 256], default 8.

reserved1

reserved

w0_coeff

Blending coefficient of defect pixel correction. Precision u4, range [0, 8], default 8.

reserved2

reserved

w1_coeff

Enable influence of incorrect defect pixel correction to be avoided. Precision u4, range [1, 8], default 8.

reserved3

reserved

struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config

Denoising config

Definition

struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config {
  __u32 alpha:4;
  __u32 beta:4;
  __u32 gamma:4;
  __u32 reserved0:4;
  __u32 max_inf:4;
  __u32 reserved1:7;
  __u32 gd_enable:1;
  __u32 bpc_enable:1;
  __u32 bnr_enable:1;
  __u32 ff_enable:1;
  __u32 reserved2:1;
};

Members

alpha

Weight of central element of smoothing filter.

beta

Weight of peripheral elements of smoothing filter, default 4.

gamma

Weight of diagonal elements of smoothing filter, default 4.

reserved0

reserved

max_inf

Maximum increase of peripheral or diagonal element influence relative to the pre-defined value range: [0x5, 0xa]

reserved1

reserved

gd_enable

Green disparity enable control, 0 - disable, 1 - enable.

bpc_enable

Bad pixel correction enable control, 0 - disable, 1 - enable.

bnr_enable

Bayer noise removal enable control, 0 - disable, 1 - enable.

ff_enable

Fixed function enable, 0 - disable, 1 - enable.

reserved2

reserved

Description

beta and gamma parameter define the strength of the noise removal filter.

All above has precision u0.4, range [0, 0xf] format: u0.4 (no / zero bits represent whole number, 4 bits represent the fractional part with each count representing 0.0625) e.g. 0xf translates to 0.0625x15 = 0.9375

struct ipu3_uapi_bnr_static_config_opt_center_sqr_config

BNR optical square

Definition

struct ipu3_uapi_bnr_static_config_opt_center_sqr_config {
  __u32 x_sqr_reset;
  __u32 y_sqr_reset;
};

Members

x_sqr_reset

Reset value of X^2.

y_sqr_reset

Reset value of Y^2.

Description

Please note:

1. X and Y ref to ipu3_uapi_bnr_static_config_opt_center_config

2. Both structs are used in threshold formula to calculate r^2, where r is a radius of pixel [row, col] from centor of sensor.

struct ipu3_uapi_bnr_static_config

BNR static config

Definition

struct ipu3_uapi_bnr_static_config {
  struct ipu3_uapi_bnr_static_config_wb_gains_config wb_gains;
  struct ipu3_uapi_bnr_static_config_wb_gains_thr_config wb_gains_thr;
  struct ipu3_uapi_bnr_static_config_thr_coeffs_config thr_coeffs;
  struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config thr_ctrl_shd;
  struct ipu3_uapi_bnr_static_config_opt_center_config opt_center;
  struct ipu3_uapi_bnr_static_config_lut_config lut;
  struct ipu3_uapi_bnr_static_config_bp_ctrl_config bp_ctrl;
  struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config dn_detect_ctrl;
  __u32 column_size;
  struct ipu3_uapi_bnr_static_config_opt_center_sqr_config opt_center_sqr;
};

Members

wb_gains

white balance gains ipu3_uapi_bnr_static_config_wb_gains_config

wb_gains_thr

white balance gains threshold as defined by ipu3_uapi_bnr_static_config_wb_gains_thr_config

thr_coeffs

coefficients of threshold ipu3_uapi_bnr_static_config_thr_coeffs_config

thr_ctrl_shd

control of shading threshold ipu3_uapi_bnr_static_config_thr_ctrl_shd_config

opt_center

optical center ipu3_uapi_bnr_static_config_opt_center_config

lut

lookup table ipu3_uapi_bnr_static_config_lut_config

bp_ctrl

detect and remove bad pixels as defined in struct ipu3_uapi_bnr_static_config_bp_ctrl_config

dn_detect_ctrl

detect and remove noise. ipu3_uapi_bnr_static_config_dn_detect_ctrl_config

column_size

The number of pixels in column.

opt_center_sqr

Reset value of r^2 to optical center, see ipu3_uapi_bnr_static_config_opt_center_sqr_config.

Description

Above parameters and opt_center_sqr are used for white balance and shading.

struct ipu3_uapi_bnr_static_config_green_disparity

Correct green disparity

Definition

struct ipu3_uapi_bnr_static_config_green_disparity {
  __u32 gd_red:6;
  __u32 reserved0:2;
  __u32 gd_green:6;
  __u32 reserved1:2;
  __u32 gd_blue:6;
  __u32 reserved2:10;
  __u32 gd_black:14;
  __u32 reserved3:2;
  __u32 gd_shading:7;
  __u32 reserved4:1;
  __u32 gd_support:2;
  __u32 reserved5:1;
  __u32 gd_clip:1;
  __u32 gd_central_weight:4;
};

Members

gd_red

Shading gain coeff for gr disparity level in bright red region. Precision u0.6, default 4(0.0625).

reserved0

reserved

gd_green

Shading gain coeff for gr disparity level in bright green region. Precision u0.6, default 4(0.0625).

reserved1

reserved

gd_blue

Shading gain coeff for gr disparity level in bright blue region. Precision u0.6, default 4(0.0625).

reserved2

reserved

gd_black

Maximal green disparity level in dark region (stronger disparity assumed to be image detail). Precision u14, default 80.

reserved3

reserved

gd_shading

Change maximal green disparity level according to square distance from image center.

reserved4

reserved

gd_support

Lower bound for the number of second green color pixels in current pixel neighborhood with less than threshold difference from it.

reserved5

reserved

gd_clip

Turn green disparity clip on/off, [0, 1], default 1.

gd_central_weight

Central pixel weight in 9 pixels weighted sum.

Description

The shading gain coeff of red, green, blue and black are used to calculate threshold given a pixel’s color value and its coordinates in the image.

struct ipu3_uapi_dm_config

De-mosaic parameters

Definition

struct ipu3_uapi_dm_config {
  __u32 dm_en:1;
  __u32 ch_ar_en:1;
  __u32 fcc_en:1;
  __u32 reserved0:13;
  __u32 frame_width:16;
  __u32 gamma_sc:5;
  __u32 reserved1:3;
  __u32 lc_ctrl:5;
  __u32 reserved2:3;
  __u32 cr_param1:5;
  __u32 reserved3:3;
  __u32 cr_param2:5;
  __u32 reserved4:3;
  __u32 coring_param:5;
  __u32 reserved5:27;
};

Members

dm_en

de-mosaic enable.

ch_ar_en

Checker artifacts removal enable flag. Default 0.

fcc_en

False color correction (FCC) enable flag. Default 0.

reserved0

reserved

frame_width

do not care

gamma_sc

Sharpening coefficient (coefficient of 2-d derivation of complementary color in Hamilton-Adams interpolation). u5, range [0, 31], default 8.

reserved1

reserved

lc_ctrl

Parameter that controls weights of Chroma Homogeneity metric in calculation of final homogeneity metric. u5, range [0, 31], default 7.

reserved2

reserved

cr_param1

First parameter that defines Checker artifact removal feature gain. Precision u5, range [0, 31], default 8.

reserved3

reserved

cr_param2

Second parameter that defines Checker artifact removal feature gain. Precision u5, range [0, 31], default 8.

reserved4

reserved

coring_param

Defines power of false color correction operation. low for preserving edge colors, high for preserving gray edge artifacts. Precision u1.4, range [0, 1.9375], default 4 (0.25).

reserved5

reserved

Description

The demosaic fixed function block is responsible to covert Bayer(mosaiced) images into color images based on demosaicing algorithm.

struct ipu3_uapi_ccm_mat_config

Color correction matrix

Definition

struct ipu3_uapi_ccm_mat_config {
  __s16 coeff_m11;
  __s16 coeff_m12;
  __s16 coeff_m13;
  __s16 coeff_o_r;
  __s16 coeff_m21;
  __s16 coeff_m22;
  __s16 coeff_m23;
  __s16 coeff_o_g;
  __s16 coeff_m31;
  __s16 coeff_m32;
  __s16 coeff_m33;
  __s16 coeff_o_b;
};

Members

coeff_m11

CCM 3x3 coefficient, range [-65536, 65535]

coeff_m12

CCM 3x3 coefficient, range [-8192, 8191]

coeff_m13

CCM 3x3 coefficient, range [-32768, 32767]

coeff_o_r

Bias 3x1 coefficient, range [-8191, 8181]

coeff_m21

CCM 3x3 coefficient, range [-32767, 32767]

coeff_m22

CCM 3x3 coefficient, range [-8192, 8191]

coeff_m23

CCM 3x3 coefficient, range [-32768, 32767]

coeff_o_g

Bias 3x1 coefficient, range [-8191, 8181]

coeff_m31

CCM 3x3 coefficient, range [-32768, 32767]

coeff_m32

CCM 3x3 coefficient, range [-8192, 8191]

coeff_m33

CCM 3x3 coefficient, range [-32768, 32767]

coeff_o_b

Bias 3x1 coefficient, range [-8191, 8181]

Description

Transform sensor specific color space to standard sRGB by applying 3x3 matrix and adding a bias vector O. The transformation is basically a rotation and translation in the 3-dimensional color spaces. Here are the defaults:

9775, -2671, 1087, 0 -1071, 8303, 815, 0 -23, -7887, 16103, 0

struct ipu3_uapi_gamma_corr_ctrl

Gamma correction

Definition

struct ipu3_uapi_gamma_corr_ctrl {
  __u32 enable:1;
  __u32 reserved:31;
};

Members

enable

gamma correction enable.

reserved

reserved

struct ipu3_uapi_gamma_corr_lut

Per-pixel tone mapping implemented as LUT.

Definition

struct ipu3_uapi_gamma_corr_lut {
  __u16 lut[IPU3_UAPI_GAMMA_CORR_LUT_ENTRIES];
};

Members

lut

256 tabulated values of the gamma function. LUT[1].. LUT[256] format u13.0, range [0, 8191].

Description

The tone mapping operation is done by a Piece wise linear graph that is implemented as a lookup table(LUT). The pixel component input intensity is the X-axis of the graph which is the table entry.

struct ipu3_uapi_gamma_config

Gamma config

Definition

struct ipu3_uapi_gamma_config {
  struct ipu3_uapi_gamma_corr_ctrl gc_ctrl ;
  struct ipu3_uapi_gamma_corr_lut gc_lut ;
};

Members

gc_ctrl

control of gamma correction ipu3_uapi_gamma_corr_ctrl

gc_lut

lookup table of gamma correction ipu3_uapi_gamma_corr_lut

struct ipu3_uapi_csc_mat_config

Color space conversion matrix config

Definition

struct ipu3_uapi_csc_mat_config {
  __s16 coeff_c11;
  __s16 coeff_c12;
  __s16 coeff_c13;
  __s16 coeff_b1;
  __s16 coeff_c21;
  __s16 coeff_c22;
  __s16 coeff_c23;
  __s16 coeff_b2;
  __s16 coeff_c31;
  __s16 coeff_c32;
  __s16 coeff_c33;
  __s16 coeff_b3;
};

Members

coeff_c11

Conversion matrix value, format s0.14, range [-16384, 16383].

coeff_c12

Conversion matrix value, format s0.14, range [-8192, 8191].

coeff_c13

Conversion matrix value, format s0.14, range [-16384, 16383].

coeff_b1

Bias 3x1 coefficient, s13.0 range [-8192, 8191].

coeff_c21

Conversion matrix value, format s0.14, range [-16384, 16383].

coeff_c22

Conversion matrix value, format s0.14, range [-8192, 8191].

coeff_c23

Conversion matrix value, format s0.14, range [-16384, 16383].

coeff_b2

Bias 3x1 coefficient, s13.0 range [-8192, 8191].

coeff_c31

Conversion matrix value, format s0.14, range [-16384, 16383].

coeff_c32

Conversion matrix value, format s0.14, range [-8192, 8191].

coeff_c33

Conversion matrix value, format s0.14, range [-16384, 16383].

coeff_b3

Bias 3x1 coefficient, s13.0 range [-8192, 8191].

Description

To transform each pixel from RGB to YUV (Y - brightness/luminance, UV -chroma) by applying the pixel’s values by a 3x3 matrix and adding an optional bias 3x1 vector. Here are the default values for the matrix:

4898, 9617, 1867, 0, -2410, -4732, 7143, 0, 10076, -8437, -1638, 0,

(i.e. for real number 0.299, 0.299 * 2^14 becomes 4898.)

struct ipu3_uapi_cds_params

Chroma down-scaling

Definition

struct ipu3_uapi_cds_params {
  __u32 ds_c00:2;
  __u32 ds_c01:2;
  __u32 ds_c02:2;
  __u32 ds_c03:2;
  __u32 ds_c10:2;
  __u32 ds_c11:2;
  __u32 ds_c12:2;
  __u32 ds_c13:2;
  __u32 ds_nf:5;
  __u32 reserved0:3;
  __u32 csc_en:1;
  __u32 uv_bin_output:1;
  __u32 reserved1:6;
};

Members

ds_c00

range [0, 3]

ds_c01

range [0, 3]

ds_c02

range [0, 3]

ds_c03

range [0, 3]

ds_c10

range [0, 3]

ds_c11

range [0, 3]

ds_c12

range [0, 3]

ds_c13

range [0, 3]

ds_nf

Normalization factor for Chroma output downscaling filter, range 0,4, default 2.

reserved0

reserved

csc_en

Color space conversion enable

uv_bin_output

0: output YUV 4.2.0, 1: output YUV 4.2.2(default).

reserved1

reserved

Description

In case user does not provide, above 4x2 filter will use following defaults:

1, 3, 3, 1, 1, 3, 3, 1,

struct ipu3_uapi_shd_grid_config

Bayer shading(darkening) correction

Definition

struct ipu3_uapi_shd_grid_config {
  __u8 width;
  __u8 height;
  __u8 block_width_log2:3;
  __u8 reserved0:1;
  __u8 block_height_log2:3;
  __u8 reserved1:1;
  __u8 grid_height_per_slice;
  __s16 x_start;
  __s16 y_start;
};

Members

width

Grid horizontal dimensions, u8, [8, 128], default 73

height

Grid vertical dimensions, u8, [8, 128], default 56

block_width_log2

Log2 of the width of the grid cell in pixel count u4, [0, 15], default value 5.

reserved0

reserved

block_height_log2

Log2 of the height of the grid cell in pixel count u4, [0, 15], default value 6.

reserved1

reserved

grid_height_per_slice

SHD_MAX_CELLS_PER_SET/width. (with SHD_MAX_CELLS_PER_SET = 146).

x_start

X value of top left corner of sensor relative to ROI s13, [-4096, 0], default 0, only negative values.

y_start

Y value of top left corner of sensor relative to ROI s13, [-4096, 0], default 0, only negative values.

struct ipu3_uapi_shd_general_config

Shading general config

Definition

struct ipu3_uapi_shd_general_config {
  __u32 init_set_vrt_offst_ul:8;
  __u32 shd_enable:1;
  __u32 gain_factor:2;
  __u32 reserved:21;
};

Members

init_set_vrt_offst_ul

set vertical offset, y_start >> block_height_log2 % grid_height_per_slice.

shd_enable

shading enable.

gain_factor

Gain factor. Shift calculated anti shading value. Precision u2. 0x0 - gain factor [1, 5], means no shift interpolated value. 0x1 - gain factor [1, 9], means shift interpolated by 1. 0x2 - gain factor [1, 17], means shift interpolated by 2.

reserved

reserved

Description

Correction is performed by multiplying a gain factor for each of the 4 Bayer channels as a function of the pixel location in the sensor.

struct ipu3_uapi_shd_black_level_config

Black level correction

Definition

struct ipu3_uapi_shd_black_level_config {
  __s16 bl_r;
  __s16 bl_gr;
  __s16 bl_gb;
  __s16 bl_b;
};

Members

bl_r

Bios values for green red. s11 range [-2048, 2047].

bl_gr

Bios values for green blue. s11 range [-2048, 2047].

bl_gb

Bios values for red. s11 range [-2048, 2047].

bl_b

Bios values for blue. s11 range [-2048, 2047].

struct ipu3_uapi_shd_config_static

Shading config static

Definition

struct ipu3_uapi_shd_config_static {
  struct ipu3_uapi_shd_grid_config grid;
  struct ipu3_uapi_shd_general_config general;
  struct ipu3_uapi_shd_black_level_config black_level;
};

Members

grid

shading grid config ipu3_uapi_shd_grid_config

general

shading general config ipu3_uapi_shd_general_config

black_level

black level config for shading correction as defined by ipu3_uapi_shd_black_level_config

struct ipu3_uapi_shd_lut

Shading gain factor lookup table.

Definition

struct ipu3_uapi_shd_lut {
  struct {
    struct {
      __u16 r;
      __u16 gr;
    } r_and_gr[IPU3_UAPI_SHD_MAX_CELLS_PER_SET];
    __u8 reserved1[24];
    struct {
      __u16 gb;
      __u16 b;
    } gb_and_b[IPU3_UAPI_SHD_MAX_CELLS_PER_SET];
    __u8 reserved2[24];
  } sets[IPU3_UAPI_SHD_MAX_CFG_SETS];
};

Members

sets

array

sets.r_and_gr

Red and GreenR Lookup table.

sets.r_and_gr.r

Red shading factor.

sets.r_and_gr.gr

GreenR shading factor.

sets.reserved1

reserved

sets.gb_and_b

GreenB and Blue Lookup table.

sets.gb_and_b.gb

GreenB shading factor.

sets.gb_and_b.b

Blue shading factor.

sets.reserved2

reserved

Description

Map to shading correction LUT register set.

struct ipu3_uapi_shd_config

Shading config

Definition

struct ipu3_uapi_shd_config {
  struct ipu3_uapi_shd_config_static shd ;
  struct ipu3_uapi_shd_lut shd_lut ;
};

Members

shd

shading static config, see ipu3_uapi_shd_config_static

shd_lut

shading lookup table ipu3_uapi_shd_lut

struct ipu3_uapi_iefd_cux2

IEFd Config Unit 2 parameters

Definition

struct ipu3_uapi_iefd_cux2 {
  __u32 x0:9;
  __u32 x1:9;
  __u32 a01:9;
  __u32 b01:5;
};

Members

x0

X0 point of Config Unit, u9.0, default 0.

x1

X1 point of Config Unit, u9.0, default 0.

a01

Slope A of Config Unit, s4.4, default 0.

b01

Slope B, always 0.

Description

Calculate weight for blending directed and non-directed denoise elements

All CU inputs are unsigned, they will be converted to signed when written to register, i.e. a01 will be written to 9 bit register in s4.4 format. The data precision s4.4 means 4 bits for integer parts and 4 bits for the fractional part, the first bit indicates positive or negative value. For userspace software (commonly the imaging library), the computation for the CU slope values should be based on the slope resolution 1/16 (binary 0.0001 - the minimal interval value), the slope value range is [-256, +255]. This applies to ipu3_uapi_iefd_cux6_ed, ipu3_uapi_iefd_cux2_1, ipu3_uapi_iefd_cux2_1, ipu3_uapi_iefd_cux4 and ipu3_uapi_iefd_cux6_rad.

Note

Each instance of Config Unit needs X coordinate of n points and slope A factor between points calculated by driver based on calibration parameters.

struct ipu3_uapi_iefd_cux6_ed

Calculate power of non-directed sharpening element, Config Unit 6 for edge detail (ED).

Definition

struct ipu3_uapi_iefd_cux6_ed {
  __u32 x0:9;
  __u32 x1:9;
  __u32 x2:9;
  __u32 reserved0:5;
  __u32 x3:9;
  __u32 x4:9;
  __u32 x5:9;
  __u32 reserved1:5;
  __u32 a01:9;
  __u32 a12:9;
  __u32 a23:9;
  __u32 reserved2:5;
  __u32 a34:9;
  __u32 a45:9;
  __u32 reserved3:14;
  __u32 b01:9;
  __u32 b12:9;
  __u32 b23:9;
  __u32 reserved4:5;
  __u32 b34:9;
  __u32 b45:9;
  __u32 reserved5:14;
};

Members

x0

X coordinate of point 0, u9.0, default 0.

x1

X coordinate of point 1, u9.0, default 0.

x2

X coordinate of point 2, u9.0, default 0.

reserved0

reserved

x3

X coordinate of point 3, u9.0, default 0.

x4

X coordinate of point 4, u9.0, default 0.

x5

X coordinate of point 5, u9.0, default 0.

reserved1

reserved

a01

slope A points 01, s4.4, default 0.

a12

slope A points 12, s4.4, default 0.

a23

slope A points 23, s4.4, default 0.

reserved2

reserved

a34

slope A points 34, s4.4, default 0.

a45

slope A points 45, s4.4, default 0.

reserved3

reserved

b01

slope B points 01, s4.4, default 0.

b12

slope B points 12, s4.4, default 0.

b23

slope B points 23, s4.4, default 0.

reserved4

reserved

b34

slope B points 34, s4.4, default 0.

b45

slope B points 45, s4.4, default 0.

reserved5

reserved.

struct ipu3_uapi_iefd_cux2_1

Calculate power of non-directed denoise element apply.

Definition

struct ipu3_uapi_iefd_cux2_1 {
  __u32 x0:9;
  __u32 x1:9;
  __u32 a01:9;
  __u32 reserved1:5;
  __u32 b01:8;
  __u32 reserved2:24;
};

Members

x0

X0 point of Config Unit, u9.0, default 0.

x1

X1 point of Config Unit, u9.0, default 0.

a01

Slope A of Config Unit, s4.4, default 0.

reserved1

reserved

b01

offset B0 of Config Unit, u7.0, default 0.

reserved2

reserved

struct ipu3_uapi_iefd_cux4

Calculate power of non-directed sharpening element.

Definition

struct ipu3_uapi_iefd_cux4 {
  __u32 x0:9;
  __u32 x1:9;
  __u32 x2:9;
  __u32 reserved0:5;
  __u32 x3:9;
  __u32 a01:9;
  __u32 a12:9;
  __u32 reserved1:5;
  __u32 a23:9;
  __u32 b01:8;
  __u32 b12:8;
  __u32 reserved2:7;
  __u32 b23:8;
  __u32 reserved3:24;
};

Members

x0

X0 point of Config Unit, u9.0, default 0.

x1

X1 point of Config Unit, u9.0, default 0.

x2

X2 point of Config Unit, u9.0, default 0.

reserved0

reserved

x3

X3 point of Config Unit, u9.0, default 0.

a01

Slope A0 of Config Unit, s4.4, default 0.

a12

Slope A1 of Config Unit, s4.4, default 0.

reserved1

reserved

a23

Slope A2 of Config Unit, s4.4, default 0.

b01

Offset B0 of Config Unit, s7.0, default 0.

b12

Offset B1 of Config Unit, s7.0, default 0.

reserved2

reserved

b23

Offset B2 of Config Unit, s7.0, default 0.

reserved3

reserved

struct ipu3_uapi_iefd_cux6_rad

Radial Config Unit (CU)

Definition

struct ipu3_uapi_iefd_cux6_rad {
  __u32 x0:8;
  __u32 x1:8;
  __u32 x2:8;
  __u32 x3:8;
  __u32 x4:8;
  __u32 x5:8;
  __u32 reserved1:16;
  __u32 a01:16;
  __u32 a12:16;
  __u32 a23:16;
  __u32 a34:16;
  __u32 a45:16;
  __u32 reserved2:16;
  __u32 b01:10;
  __u32 b12:10;
  __u32 b23:10;
  __u32 reserved4:2;
  __u32 b34:10;
  __u32 b45:10;
  __u32 reserved5:12;
};

Members

x0

x0 points of Config Unit radial, u8.0

x1

x1 points of Config Unit radial, u8.0

x2

x2 points of Config Unit radial, u8.0

x3

x3 points of Config Unit radial, u8.0

x4

x4 points of Config Unit radial, u8.0

x5

x5 points of Config Unit radial, u8.0

reserved1

reserved

a01

Slope A of Config Unit radial, s7.8

a12

Slope A of Config Unit radial, s7.8

a23

Slope A of Config Unit radial, s7.8

a34

Slope A of Config Unit radial, s7.8

a45

Slope A of Config Unit radial, s7.8

reserved2

reserved

b01

Slope B of Config Unit radial, s9.0

b12

Slope B of Config Unit radial, s9.0

b23

Slope B of Config Unit radial, s9.0

reserved4

reserved

b34

Slope B of Config Unit radial, s9.0

b45

Slope B of Config Unit radial, s9.0

reserved5

reserved

struct ipu3_uapi_yuvp1_iefd_cfg_units

IEFd Config Units parameters

Definition

struct ipu3_uapi_yuvp1_iefd_cfg_units {
  struct ipu3_uapi_iefd_cux2 cu_1;
  struct ipu3_uapi_iefd_cux6_ed cu_ed;
  struct ipu3_uapi_iefd_cux2 cu_3;
  struct ipu3_uapi_iefd_cux2_1 cu_5;
  struct ipu3_uapi_iefd_cux4 cu_6;
  struct ipu3_uapi_iefd_cux2 cu_7;
  struct ipu3_uapi_iefd_cux4 cu_unsharp;
  struct ipu3_uapi_iefd_cux6_rad cu_radial;
  struct ipu3_uapi_iefd_cux2 cu_vssnlm;
};

Members

cu_1

calculate weight for blending directed and non-directed denoise elements. See ipu3_uapi_iefd_cux2

cu_ed

calculate power of non-directed sharpening element, see ipu3_uapi_iefd_cux6_ed

cu_3

calculate weight for blending directed and non-directed denoise elements. A ipu3_uapi_iefd_cux2

cu_5

calculate power of non-directed denoise element apply, use ipu3_uapi_iefd_cux2_1

cu_6

calculate power of non-directed sharpening element. See ipu3_uapi_iefd_cux4

cu_7

calculate weight for blending directed and non-directed denoise elements. Use ipu3_uapi_iefd_cux2

cu_unsharp

Config Unit of unsharp ipu3_uapi_iefd_cux4

cu_radial

Config Unit of radial ipu3_uapi_iefd_cux6_rad

cu_vssnlm

Config Unit of vssnlm ipu3_uapi_iefd_cux2

struct ipu3_uapi_yuvp1_iefd_config_s

IEFd config

Definition

struct ipu3_uapi_yuvp1_iefd_config_s {
  __u32 horver_diag_coeff:7;
  __u32 reserved0:1;
  __u32 clamp_stitch:6;
  __u32 reserved1:2;
  __u32 direct_metric_update:5;
  __u32 reserved2:3;
  __u32 ed_horver_diag_coeff:7;
  __u32 reserved3:1;
};

Members

horver_diag_coeff

Gradient compensation. Compared with vertical / horizontal (0 / 90 degree), coefficient of diagonal (45 / 135 degree) direction should be corrected by approx. 1/sqrt(2).

reserved0

reserved

clamp_stitch

Slope to stitch between clamped and unclamped edge values

reserved1

reserved

direct_metric_update

Update coeff for direction metric

reserved2

reserved

ed_horver_diag_coeff

Radial Coefficient that compensates for different distance for vertical/horizontal and diagonal gradient calculation (approx. 1/sqrt(2))

reserved3

reserved

struct ipu3_uapi_yuvp1_iefd_control

IEFd control

Definition

struct ipu3_uapi_yuvp1_iefd_control {
  __u32 iefd_en:1;
  __u32 denoise_en:1;
  __u32 direct_smooth_en:1;
  __u32 rad_en:1;
  __u32 vssnlm_en:1;
  __u32 reserved:27;
};

Members

iefd_en

Enable IEFd

denoise_en

Enable denoise

direct_smooth_en

Enable directional smooth

rad_en

Enable radial update

vssnlm_en

Enable VSSNLM output filter

reserved

reserved

struct ipu3_uapi_sharp_cfg

Sharpening config

Definition

struct ipu3_uapi_sharp_cfg {
  __u32 nega_lmt_txt:13;
  __u32 reserved0:19;
  __u32 posi_lmt_txt:13;
  __u32 reserved1:19;
  __u32 nega_lmt_dir:13;
  __u32 reserved2:19;
  __u32 posi_lmt_dir:13;
  __u32 reserved3:19;
};

Members

nega_lmt_txt

Sharpening limit for negative overshoots for texture.

reserved0

reserved

posi_lmt_txt

Sharpening limit for positive overshoots for texture.

reserved1

reserved

nega_lmt_dir

Sharpening limit for negative overshoots for direction (edge).

reserved2

reserved

posi_lmt_dir

Sharpening limit for positive overshoots for direction (edge).

reserved3

reserved

Description

Fixed point type u13.0, range [0, 8191].

struct ipu3_uapi_far_w

Sharpening config for far sub-group

Definition

struct ipu3_uapi_far_w {
  __u32 dir_shrp:7;
  __u32 reserved0:1;
  __u32 dir_dns:7;
  __u32 reserved1:1;
  __u32 ndir_dns_powr:7;
  __u32 reserved2:9;
};

Members

dir_shrp

Weight of wide direct sharpening, u1.6, range [0, 64], default 64.

reserved0

reserved

dir_dns

Weight of wide direct denoising, u1.6, range [0, 64], default 0.

reserved1

reserved

ndir_dns_powr

Power of non-direct denoising, Precision u1.6, range [0, 64], default 64.

reserved2

reserved

struct ipu3_uapi_unsharp_cfg

Unsharp config

Definition

struct ipu3_uapi_unsharp_cfg {
  __u32 unsharp_weight:7;
  __u32 reserved0:1;
  __u32 unsharp_amount:9;
  __u32 reserved1:15;
};

Members

unsharp_weight

Unsharp mask blending weight. u1.6, range [0, 64], default 16. 0 - disabled, 64 - use only unsharp.

reserved0

reserved

unsharp_amount

Unsharp mask amount, u4.5, range [0, 511], default 0.

reserved1

reserved

struct ipu3_uapi_yuvp1_iefd_shrp_cfg

IEFd sharpness config

Definition

struct ipu3_uapi_yuvp1_iefd_shrp_cfg {
  struct ipu3_uapi_sharp_cfg cfg;
  struct ipu3_uapi_far_w far_w;
  struct ipu3_uapi_unsharp_cfg unshrp_cfg;
};

Members

cfg

sharpness config ipu3_uapi_sharp_cfg

far_w

wide range config, value as specified by ipu3_uapi_far_w: The 5x5 environment is separated into 2 sub-groups, the 3x3 nearest neighbors (8 pixels called Near), and the second order neighborhood around them (16 pixels called Far).

unshrp_cfg

unsharpness config. ipu3_uapi_unsharp_cfg

struct ipu3_uapi_unsharp_coef0

Unsharp mask coefficients

Definition

struct ipu3_uapi_unsharp_coef0 {
  __u32 c00:9;
  __u32 c01:9;
  __u32 c02:9;
  __u32 reserved:5;
};

Members

c00

Coeff11, s0.8, range [-255, 255], default 1.

c01

Coeff12, s0.8, range [-255, 255], default 5.

c02

Coeff13, s0.8, range [-255, 255], default 9.

reserved

reserved

Description

Configurable registers for common sharpening support.

struct ipu3_uapi_unsharp_coef1

Unsharp mask coefficients

Definition

struct ipu3_uapi_unsharp_coef1 {
  __u32 c11:9;
  __u32 c12:9;
  __u32 c22:9;
  __u32 reserved:5;
};

Members

c11

Coeff22, s0.8, range [-255, 255], default 29.

c12

Coeff23, s0.8, range [-255, 255], default 55.

c22

Coeff33, s0.8, range [-255, 255], default 96.

reserved

reserved

struct ipu3_uapi_yuvp1_iefd_unshrp_cfg

Unsharp mask config

Definition

struct ipu3_uapi_yuvp1_iefd_unshrp_cfg {
  struct ipu3_uapi_unsharp_coef0 unsharp_coef0;
  struct ipu3_uapi_unsharp_coef1 unsharp_coef1;
};

Members

unsharp_coef0

unsharp coefficient 0 config. See ipu3_uapi_unsharp_coef0

unsharp_coef1

unsharp coefficient 1 config. See ipu3_uapi_unsharp_coef1

struct ipu3_uapi_radial_reset_xy

Radial coordinate reset

Definition

struct ipu3_uapi_radial_reset_xy {
  __s32 x:13;
  __u32 reserved0:3;
  __s32 y:13;
  __u32 reserved1:3;
};

Members

x

Radial reset of x coordinate. Precision s12, [-4095, 4095], default 0.

reserved0

reserved

y

Radial center y coordinate. Precision s12, [-4095, 4095], default 0.

reserved1

reserved

struct ipu3_uapi_radial_reset_x2

Radial X^2 reset

Definition

struct ipu3_uapi_radial_reset_x2 {
  __u32 x2:24;
  __u32 reserved:8;
};

Members

x2

Radial reset of x^2 coordinate. Precision u24, default 0.

reserved

reserved

struct ipu3_uapi_radial_reset_y2

Radial Y^2 reset

Definition

struct ipu3_uapi_radial_reset_y2 {
  __u32 y2:24;
  __u32 reserved:8;
};

Members

y2

Radial reset of y^2 coordinate. Precision u24, default 0.

reserved

reserved

struct ipu3_uapi_radial_cfg

Radial config

Definition

struct ipu3_uapi_radial_cfg {
  __u32 rad_nf:4;
  __u32 reserved0:4;
  __u32 rad_inv_r2:7;
  __u32 reserved1:17;
};

Members

rad_nf

Radial. R^2 normalization factor is scale down by 2^ - (15 + scale)

reserved0

reserved

rad_inv_r2

Radial R^-2 normelized to (0.5..1). Precision u7, range [0, 127].

reserved1

reserved

struct ipu3_uapi_rad_far_w

Radial FAR sub-group

Definition

struct ipu3_uapi_rad_far_w {
  __u32 rad_dir_far_sharp_w:8;
  __u32 rad_dir_far_dns_w:8;
  __u32 rad_ndir_far_dns_power:8;
  __u32 reserved:8;
};

Members

rad_dir_far_sharp_w

Weight of wide direct sharpening, u1.6, range [0, 64], default 64.

rad_dir_far_dns_w

Weight of wide direct denoising, u1.6, range [0, 64], default 0.

rad_ndir_far_dns_power

power of non-direct sharpening, u1.6, range [0, 64], default 0.

reserved

reserved

struct ipu3_uapi_cu_cfg0

Radius Config Unit cfg0 register

Definition

struct ipu3_uapi_cu_cfg0 {
  __u32 cu6_pow:7;
  __u32 reserved0:1;
  __u32 cu_unsharp_pow:7;
  __u32 reserved1:1;
  __u32 rad_cu6_pow:7;
  __u32 reserved2:1;
  __u32 rad_cu_unsharp_pow:6;
  __u32 reserved3:2;
};

Members

cu6_pow

Power of CU6. Power of non-direct sharpening, u3.4.

reserved0

reserved

cu_unsharp_pow

Power of unsharp mask, u2.4.

reserved1

reserved

rad_cu6_pow

Radial/corner CU6. Directed sharpening power, u3.4.

reserved2

reserved

rad_cu_unsharp_pow

Radial power of unsharp mask, u2.4.

reserved3

reserved

struct ipu3_uapi_cu_cfg1

Radius Config Unit cfg1 register

Definition

struct ipu3_uapi_cu_cfg1 {
  __u32 rad_cu6_x1:9;
  __u32 reserved0:1;
  __u32 rad_cu_unsharp_x1:9;
  __u32 reserved1:13;
};

Members

rad_cu6_x1

X1 point of Config Unit 6, precision u9.0.

reserved0

reserved

rad_cu_unsharp_x1

X1 point for Config Unit unsharp for radial/corner point precision u9.0.

reserved1

reserved

struct ipu3_uapi_yuvp1_iefd_rad_cfg

IEFd parameters changed radially over the picture plane.

Definition

struct ipu3_uapi_yuvp1_iefd_rad_cfg {
  struct ipu3_uapi_radial_reset_xy reset_xy;
  struct ipu3_uapi_radial_reset_x2 reset_x2;
  struct ipu3_uapi_radial_reset_y2 reset_y2;
  struct ipu3_uapi_radial_cfg cfg;
  struct ipu3_uapi_rad_far_w rad_far_w;
  struct ipu3_uapi_cu_cfg0 cu_cfg0;
  struct ipu3_uapi_cu_cfg1 cu_cfg1;
};

Members

reset_xy

reset xy value in radial calculation. ipu3_uapi_radial_reset_xy

reset_x2

reset x square value in radial calculation. See struct ipu3_uapi_radial_reset_x2

reset_y2

reset y square value in radial calculation. See struct ipu3_uapi_radial_reset_y2

cfg

radial config defined in ipu3_uapi_radial_cfg

rad_far_w

weight for wide range radial. ipu3_uapi_rad_far_w

cu_cfg0

configuration unit 0. See ipu3_uapi_cu_cfg0

cu_cfg1

configuration unit 1. See ipu3_uapi_cu_cfg1

struct ipu3_uapi_vss_lut_x

Vssnlm LUT x0/x1/x2

Definition

struct ipu3_uapi_vss_lut_x {
  __u32 vs_x0:8;
  __u32 vs_x1:8;
  __u32 vs_x2:8;
  __u32 reserved2:8;
};

Members

vs_x0

Vssnlm LUT x0, precision u8, range [0, 255], default 16.

vs_x1

Vssnlm LUT x1, precision u8, range [0, 255], default 32.

vs_x2

Vssnlm LUT x2, precision u8, range [0, 255], default 64.

reserved2

reserved

struct ipu3_uapi_vss_lut_y

Vssnlm LUT y0/y1/y2

Definition

struct ipu3_uapi_vss_lut_y {
  __u32 vs_y1:4;
  __u32 reserved0:4;
  __u32 vs_y2:4;
  __u32 reserved1:4;
  __u32 vs_y3:4;
  __u32 reserved2:12;
};

Members

vs_y1

Vssnlm LUT y1, precision u4, range [0, 8], default 1.

reserved0

reserved

vs_y2

Vssnlm LUT y2, precision u4, range [0, 8], default 3.

reserved1

reserved

vs_y3

Vssnlm LUT y3, precision u4, range [0, 8], default 8.

reserved2

reserved

struct ipu3_uapi_yuvp1_iefd_vssnlm_cfg

IEFd Vssnlm Lookup table

Definition

struct ipu3_uapi_yuvp1_iefd_vssnlm_cfg {
  struct ipu3_uapi_vss_lut_x vss_lut_x;
  struct ipu3_uapi_vss_lut_y vss_lut_y;
};

Members

vss_lut_x

vss lookup table. See ipu3_uapi_vss_lut_x description

vss_lut_y

vss lookup table. See ipu3_uapi_vss_lut_y description

struct ipu3_uapi_yuvp1_iefd_config

IEFd config

Definition

struct ipu3_uapi_yuvp1_iefd_config {
  struct ipu3_uapi_yuvp1_iefd_cfg_units units;
  struct ipu3_uapi_yuvp1_iefd_config_s config;
  struct ipu3_uapi_yuvp1_iefd_control control;
  struct ipu3_uapi_yuvp1_iefd_shrp_cfg sharp;
  struct ipu3_uapi_yuvp1_iefd_unshrp_cfg unsharp;
  struct ipu3_uapi_yuvp1_iefd_rad_cfg rad;
  struct ipu3_uapi_yuvp1_iefd_vssnlm_cfg vsslnm;
};

Members

units

configuration unit setting, ipu3_uapi_yuvp1_iefd_cfg_units

config

configuration, as defined by ipu3_uapi_yuvp1_iefd_config_s

control

control setting, as defined by ipu3_uapi_yuvp1_iefd_control

sharp

sharpness setting, as defined by ipu3_uapi_yuvp1_iefd_shrp_cfg

unsharp

unsharpness setting, as defined by ipu3_uapi_yuvp1_iefd_unshrp_cfg

rad

radial setting, as defined by ipu3_uapi_yuvp1_iefd_rad_cfg

vsslnm

vsslnm setting, as defined by ipu3_uapi_yuvp1_iefd_vssnlm_cfg

struct ipu3_uapi_yuvp1_yds_config

Y Down-Sampling config

Definition

struct ipu3_uapi_yuvp1_yds_config {
  __u32 c00:2;
  __u32 c01:2;
  __u32 c02:2;
  __u32 c03:2;
  __u32 c10:2;
  __u32 c11:2;
  __u32 c12:2;
  __u32 c13:2;
  __u32 norm_factor:5;
  __u32 reserved0:4;
  __u32 bin_output:1;
  __u32 reserved1:6;
};

Members

c00

range [0, 3], default 0x0

c01

range [0, 3], default 0x1

c02

range [0, 3], default 0x1

c03

range [0, 3], default 0x0

c10

range [0, 3], default 0x0

c11

range [0, 3], default 0x1

c12

range [0, 3], default 0x1

c13

range [0, 3], default 0x0

norm_factor

Normalization factor, range [0, 4], default 2 0 - divide by 1 1 - divide by 2 2 - divide by 4 3 - divide by 8 4 - divide by 16

reserved0

reserved

bin_output

Down sampling on Luma channel in two optional modes 0 - Bin output 4.2.0 (default), 1 output 4.2.2.

reserved1

reserved

Description

Above are 4x2 filter coefficients for chroma output downscaling.

struct ipu3_uapi_yuvp1_chnr_enable_config

Chroma noise reduction enable

Definition

struct ipu3_uapi_yuvp1_chnr_enable_config {
  __u32 enable:1;
  __u32 yuv_mode:1;
  __u32 reserved0:14;
  __u32 col_size:12;
  __u32 reserved1:4;
};

Members

enable

enable/disable chroma noise reduction

yuv_mode

0 - YUV420, 1 - YUV422

reserved0

reserved

col_size

number of columns in the frame, max width is 2560

reserved1

reserved

struct ipu3_uapi_yuvp1_chnr_coring_config

Coring thresholds for UV

Definition

struct ipu3_uapi_yuvp1_chnr_coring_config {
  __u32 u:13;
  __u32 reserved0:3;
  __u32 v:13;
  __u32 reserved1:3;
};

Members

u

U coring level, u0.13, range [0.0, 1.0], default 0.0

reserved0

reserved

v

V coring level, u0.13, range [0.0, 1.0], default 0.0

reserved1

reserved

struct ipu3_uapi_yuvp1_chnr_sense_gain_config

Chroma noise reduction gains

Definition

struct ipu3_uapi_yuvp1_chnr_sense_gain_config {
  __u32 vy:8;
  __u32 vu:8;
  __u32 vv:8;
  __u32 reserved0:8;
  __u32 hy:8;
  __u32 hu:8;
  __u32 hv:8;
  __u32 reserved1:8;
};

Members

vy

Sensitivity of horizontal edge of Y, default 100

vu

Sensitivity of horizontal edge of U, default 100

vv

Sensitivity of horizontal edge of V, default 100

reserved0

reserved

hy

Sensitivity of vertical edge of Y, default 50

hu

Sensitivity of vertical edge of U, default 50

hv

Sensitivity of vertical edge of V, default 50

reserved1

reserved

Description

All sensitivity gain parameters have precision u13.0, range [0, 8191].

struct ipu3_uapi_yuvp1_chnr_iir_fir_config

Chroma IIR/FIR filter config

Definition

struct ipu3_uapi_yuvp1_chnr_iir_fir_config {
  __u32 fir_0h:6;
  __u32 reserved0:2;
  __u32 fir_1h:6;
  __u32 reserved1:2;
  __u32 fir_2h:6;
  __u32 dalpha_clip_val:9;
  __u32 reserved2:1;
};

Members

fir_0h

Value of center tap in horizontal FIR, range [0, 32], default 8.

reserved0

reserved

fir_1h

Value of distance 1 in horizontal FIR, range [0, 32], default 12.

reserved1

reserved

fir_2h

Value of distance 2 tap in horizontal FIR, range [0, 32], default 0.

dalpha_clip_val

weight for previous row in IIR, range [1, 256], default 0.

reserved2

reserved

struct ipu3_uapi_yuvp1_chnr_config

Chroma noise reduction config

Definition

struct ipu3_uapi_yuvp1_chnr_config {
  struct ipu3_uapi_yuvp1_chnr_enable_config enable;
  struct ipu3_uapi_yuvp1_chnr_coring_config coring;
  struct ipu3_uapi_yuvp1_chnr_sense_gain_config sense_gain;
  struct ipu3_uapi_yuvp1_chnr_iir_fir_config iir_fir;
};

Members

enable

chroma noise reduction enable, see ipu3_uapi_yuvp1_chnr_enable_config

coring

coring config for chroma noise reduction, see ipu3_uapi_yuvp1_chnr_coring_config

sense_gain

sensitivity config for chroma noise reduction, see ipu3_uapi_yuvp1_chnr_sense_gain_config

iir_fir

iir and fir config for chroma noise reduction, see ipu3_uapi_yuvp1_chnr_iir_fir_config

struct ipu3_uapi_yuvp1_y_ee_nr_lpf_config

Luma(Y) edge enhancement low-pass filter coefficients

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_lpf_config {
  __u32 a_diag:5;
  __u32 reserved0:3;
  __u32 a_periph:5;
  __u32 reserved1:3;
  __u32 a_cent:5;
  __u32 reserved2:9;
  __u32 enable:1;
};

Members

a_diag

Smoothing diagonal coefficient, u5.0.

reserved0

reserved

a_periph

Image smoothing perpherial, u5.0.

reserved1

reserved

a_cent

Image Smoothing center coefficient, u5.0.

reserved2

reserved

enable

0: Y_EE_NR disabled, output = input; 1: Y_EE_NR enabled.

struct ipu3_uapi_yuvp1_y_ee_nr_sense_config

Luma(Y) edge enhancement noise reduction sensitivity gains

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_sense_config {
  __u32 edge_sense_0:13;
  __u32 reserved0:3;
  __u32 delta_edge_sense:13;
  __u32 reserved1:3;
  __u32 corner_sense_0:13;
  __u32 reserved2:3;
  __u32 delta_corner_sense:13;
  __u32 reserved3:3;
};

Members

edge_sense_0

Sensitivity of edge in dark area. u13.0, default 8191.

reserved0

reserved

delta_edge_sense

Difference in the sensitivity of edges between the bright and dark areas. u13.0, default 0.

reserved1

reserved

corner_sense_0

Sensitivity of corner in dark area. u13.0, default 0.

reserved2

reserved

delta_corner_sense

Difference in the sensitivity of corners between the bright and dark areas. u13.0, default 8191.

reserved3

reserved

struct ipu3_uapi_yuvp1_y_ee_nr_gain_config

Luma(Y) edge enhancement noise reduction gain config

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_gain_config {
  __u32 gain_pos_0:5;
  __u32 reserved0:3;
  __u32 delta_gain_posi:5;
  __u32 reserved1:3;
  __u32 gain_neg_0:5;
  __u32 reserved2:3;
  __u32 delta_gain_neg:5;
  __u32 reserved3:3;
};

Members

gain_pos_0

Gain for positive edge in dark area. u5.0, [0, 16], default 2.

reserved0

reserved

delta_gain_posi

Difference in the gain of edges between the bright and dark areas for positive edges. u5.0, [0, 16], default 0.

reserved1

reserved

gain_neg_0

Gain for negative edge in dark area. u5.0, [0, 16], default 8.

reserved2

reserved

delta_gain_neg

Difference in the gain of edges between the bright and dark areas for negative edges. u5.0, [0, 16], default 0.

reserved3

reserved

struct ipu3_uapi_yuvp1_y_ee_nr_clip_config

Luma(Y) edge enhancement noise reduction clipping config

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_clip_config {
  __u32 clip_pos_0:5;
  __u32 reserved0:3;
  __u32 delta_clip_posi:5;
  __u32 reserved1:3;
  __u32 clip_neg_0:5;
  __u32 reserved2:3;
  __u32 delta_clip_neg:5;
  __u32 reserved3:3;
};

Members

clip_pos_0

Limit of positive edge in dark area u5, value [0, 16], default 8.

reserved0

reserved

delta_clip_posi

Difference in the limit of edges between the bright and dark areas for positive edges. u5, value [0, 16], default 8.

reserved1

reserved

clip_neg_0

Limit of negative edge in dark area u5, value [0, 16], default 8.

reserved2

reserved

delta_clip_neg

Difference in the limit of edges between the bright and dark areas for negative edges. u5, value [0, 16], default 8.

reserved3

reserved

struct ipu3_uapi_yuvp1_y_ee_nr_frng_config

Luma(Y) edge enhancement noise reduction fringe config

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_frng_config {
  __u32 gain_exp:4;
  __u32 reserved0:28;
  __u32 min_edge:13;
  __u32 reserved1:3;
  __u32 lin_seg_param:4;
  __u32 reserved2:4;
  __u32 t1:1;
  __u32 t2:1;
  __u32 reserved3:6;
};

Members

gain_exp

Common exponent of gains, u4, [0, 8], default 2.

reserved0

reserved

min_edge

Threshold for edge and smooth stitching, u13.

reserved1

reserved

lin_seg_param

Power of LinSeg, u4.

reserved2

reserved

t1

Parameter for enabling/disabling the edge enhancement, u1.0, [0, 1], default 1.

t2

Parameter for enabling/disabling the smoothing, u1.0, [0, 1], default 1.

reserved3

reserved

struct ipu3_uapi_yuvp1_y_ee_nr_diag_config

Luma(Y) edge enhancement noise reduction diagonal config

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_diag_config {
  __u32 diag_disc_g:4;
  __u32 reserved0:4;
  __u32 hvw_hor:4;
  __u32 dw_hor:4;
  __u32 hvw_diag:4;
  __u32 dw_diag:4;
  __u32 reserved1:8;
};

Members

diag_disc_g

Coefficient that prioritize diagonal edge direction on horizontal or vertical for final enhancement. u4.0, [1, 15], default 1.

reserved0

reserved

hvw_hor

Weight of horizontal/vertical edge enhancement for hv edge. u2.2, [1, 15], default 4.

dw_hor

Weight of diagonal edge enhancement for hv edge. u2.2, [1, 15], default 1.

hvw_diag

Weight of horizontal/vertical edge enhancement for diagonal edge. u2.2, [1, 15], default 1.

dw_diag

Weight of diagonal edge enhancement for diagonal edge. u2.2, [1, 15], default 4.

reserved1

reserved

struct ipu3_uapi_yuvp1_y_ee_nr_fc_coring_config

Luma(Y) edge enhancement noise reduction false color correction (FCC) coring config

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_fc_coring_config {
  __u32 pos_0:13;
  __u32 reserved0:3;
  __u32 pos_delta:13;
  __u32 reserved1:3;
  __u32 neg_0:13;
  __u32 reserved2:3;
  __u32 neg_delta:13;
  __u32 reserved3:3;
};

Members

pos_0

Gain for positive edge in dark, u13.0, [0, 16], default 0.

reserved0

reserved

pos_delta

Gain for positive edge in bright, value: pos_0 + pos_delta <=16 u13.0, default 0.

reserved1

reserved

neg_0

Gain for negative edge in dark area, u13.0, range [0, 16], default 0.

reserved2

reserved

neg_delta

Gain for negative edge in bright area. neg_0 + neg_delta <=16 u13.0, default 0.

reserved3

reserved

Description

Coring is a simple soft thresholding technique.

struct ipu3_uapi_yuvp1_y_ee_nr_config

Edge enhancement and noise reduction

Definition

struct ipu3_uapi_yuvp1_y_ee_nr_config {
  struct ipu3_uapi_yuvp1_y_ee_nr_lpf_config lpf;
  struct ipu3_uapi_yuvp1_y_ee_nr_sense_config sense;
  struct ipu3_uapi_yuvp1_y_ee_nr_gain_config gain;
  struct ipu3_uapi_yuvp1_y_ee_nr_clip_config clip;
  struct ipu3_uapi_yuvp1_y_ee_nr_frng_config frng;
  struct ipu3_uapi_yuvp1_y_ee_nr_diag_config diag;
  struct ipu3_uapi_yuvp1_y_ee_nr_fc_coring_config fc_coring;
};

Members

lpf

low-pass filter config. See ipu3_uapi_yuvp1_y_ee_nr_lpf_config

sense

sensitivity config. See ipu3_uapi_yuvp1_y_ee_nr_sense_config

gain

gain config as defined in ipu3_uapi_yuvp1_y_ee_nr_gain_config

clip

clip config as defined in ipu3_uapi_yuvp1_y_ee_nr_clip_config

frng

fringe config as defined in ipu3_uapi_yuvp1_y_ee_nr_frng_config

diag

diagonal edge config. See ipu3_uapi_yuvp1_y_ee_nr_diag_config

fc_coring

coring config for fringe control. See ipu3_uapi_yuvp1_y_ee_nr_fc_coring_config

struct ipu3_uapi_yuvp2_tcc_gen_control_static_config

Total color correction general control config

Definition

struct ipu3_uapi_yuvp2_tcc_gen_control_static_config {
  __u32 en:1;
  __u32 blend_shift:3;
  __u32 gain_according_to_y_only:1;
  __u32 reserved0:11;
  __s32 gamma:5;
  __u32 reserved1:3;
  __s32 delta:5;
  __u32 reserved2:3;
};

Members

en

0 - TCC disabled. Output = input 1 - TCC enabled.

blend_shift

blend shift, Range[3, 4], default NA.

gain_according_to_y_only

0: Gain is calculated according to YUV, 1: Gain is calculated according to Y only

reserved0

reserved

gamma

Final blending coefficients. Values[-16, 16], default NA.

reserved1

reserved

delta

Final blending coefficients. Values[-16, 16], default NA.

reserved2

reserved

struct ipu3_uapi_yuvp2_tcc_macc_elem_static_config

Total color correction multi-axis color control (MACC) config

Definition

struct ipu3_uapi_yuvp2_tcc_macc_elem_static_config {
  __s32 a:12;
  __u32 reserved0:4;
  __s32 b:12;
  __u32 reserved1:4;
  __s32 c:12;
  __u32 reserved2:4;
  __s32 d:12;
  __u32 reserved3:4;
};

Members

a

a coefficient for 2x2 MACC conversion matrix.

reserved0

reserved

b

b coefficient 2x2 MACC conversion matrix.

reserved1

reserved

c

c coefficient for 2x2 MACC conversion matrix.

reserved2

reserved

d

d coefficient for 2x2 MACC conversion matrix.

reserved3

reserved

struct ipu3_uapi_yuvp2_tcc_macc_table_static_config

Total color correction multi-axis color control (MACC) table array

Definition

struct ipu3_uapi_yuvp2_tcc_macc_table_static_config {
  struct ipu3_uapi_yuvp2_tcc_macc_elem_static_config entries[IPU3_UAPI_YUVP2_TCC_MACC_TABLE_ELEMENTS];
};

Members

entries

config for multi axis color correction, as specified by ipu3_uapi_yuvp2_tcc_macc_elem_static_config

struct ipu3_uapi_yuvp2_tcc_inv_y_lut_static_config

Total color correction inverse y lookup table

Definition

struct ipu3_uapi_yuvp2_tcc_inv_y_lut_static_config {
  __u16 entries[IPU3_UAPI_YUVP2_TCC_INV_Y_LUT_ELEMENTS];
};

Members

entries

lookup table for inverse y estimation, and use it to estimate the ratio between luma and chroma. Chroma by approximate the absolute value of the radius on the chroma plane (R = sqrt(u^2+v^2) ) and luma by approximate by 1/Y.

struct ipu3_uapi_yuvp2_tcc_gain_pcwl_lut_static_config

Total color correction lookup table for PCWL

Definition

struct ipu3_uapi_yuvp2_tcc_gain_pcwl_lut_static_config {
  __u16 entries[IPU3_UAPI_YUVP2_TCC_GAIN_PCWL_LUT_ELEMENTS];
};

Members

entries

lookup table for gain piece wise linear transformation (PCWL)

struct ipu3_uapi_yuvp2_tcc_r_sqr_lut_static_config

Total color correction lookup table for r square root

Definition

struct ipu3_uapi_yuvp2_tcc_r_sqr_lut_static_config {
  __s16 entries[IPU3_UAPI_YUVP2_TCC_R_SQR_LUT_ELEMENTS];
};

Members

entries

lookup table for r square root estimation

struct ipu3_uapi_yuvp2_tcc_static_config

Total color correction static

Definition

struct ipu3_uapi_yuvp2_tcc_static_config {
  struct ipu3_uapi_yuvp2_tcc_gen_control_static_config gen_control;
  struct ipu3_uapi_yuvp2_tcc_macc_table_static_config macc_table;
  struct ipu3_uapi_yuvp2_tcc_inv_y_lut_static_config inv_y_lut;
  struct ipu3_uapi_yuvp2_tcc_gain_pcwl_lut_static_config gain_pcwl;
  struct ipu3_uapi_yuvp2_tcc_r_sqr_lut_static_config r_sqr_lut;
};

Members

gen_control

general config for Total Color Correction

macc_table

config for multi axis color correction

inv_y_lut

lookup table for inverse y estimation

gain_pcwl

lookup table for gain PCWL

r_sqr_lut

lookup table for r square root estimation.

struct ipu3_uapi_anr_transform_config

Advanced noise reduction transform

Definition

struct ipu3_uapi_anr_transform_config {
  __u32 enable:1;
  __u32 adaptive_treshhold_en:1;
  __u32 reserved1:30;
  __u8 reserved2[44];
  struct ipu3_uapi_anr_alpha alpha[3];
  struct ipu3_uapi_anr_beta beta[3];
  struct ipu3_uapi_anr_plane_color color[3];
  __u16 sqrt_lut[IPU3_UAPI_ANR_LUT_SIZE];
  __s16 xreset:13;
  __u16 reserved3:3;
  __s16 yreset:13;
  __u16 reserved4:3;
  __u32 x_sqr_reset:24;
  __u32 r_normfactor:5;
  __u32 reserved5:3;
  __u32 y_sqr_reset:24;
  __u32 gain_scale:8;
};

Members

enable

advanced noise reduction enabled.

adaptive_treshhold_en

On IPU3, adaptive threshold is always enabled.

reserved1

reserved

reserved2

reserved

alpha

using following defaults: 13, 13, 13, 13, 0, 0, 0, 0 11, 11, 11, 11, 0, 0, 0, 0 14, 14, 14, 14, 0, 0, 0, 0

beta

use following defaults: 24, 24, 24, 24 21, 20, 20, 21 25, 25, 25, 25

color

use defaults defined in driver/media/pci/intel/ipu3-tables.c

sqrt_lut

11 bits per element, values = [724 768 810 849 887 923 958 991 1024 1056 1116 1145 1173 1201 1086 1228 1254 1280 1305 1330 1355 1379 1402 1425 1448]

xreset

Reset value of X for r^2 calculation Value: col_start-X_center Constraint: Xreset + FrameWdith=4095 Xreset= -4095, default -1632.

reserved3

reserved

yreset

Reset value of Y for r^2 calculation Value: row_start-Y_center Constraint: Yreset + FrameHeight=4095 Yreset= -4095, default -1224.

reserved4

reserved

x_sqr_reset

Reset value of X^2 for r^2 calculation Value = (Xreset)^2

r_normfactor

Normalization factor for R. Default 14.

reserved5

reserved

y_sqr_reset

Reset value of Y^2 for r^2 calculation Value = (Yreset)^2

gain_scale

Parameter describing shading gain as a function of distance from the image center. A single value per frame, loaded by the driver. Default 115.

struct ipu3_uapi_anr_stitch_pyramid

ANR stitch pyramid

Definition

struct ipu3_uapi_anr_stitch_pyramid {
  __u32 entry0:6;
  __u32 entry1:6;
  __u32 entry2:6;
  __u32 reserved:14;
};

Members

entry0

pyramid LUT entry0, range [0x0, 0x3f]

entry1

pyramid LUT entry1, range [0x0, 0x3f]

entry2

pyramid LUT entry2, range [0x0, 0x3f]

reserved

reserved

struct ipu3_uapi_anr_stitch_config

ANR stitch config

Definition

struct ipu3_uapi_anr_stitch_config {
  __u32 anr_stitch_en;
  __u8 reserved[44];
  struct ipu3_uapi_anr_stitch_pyramid pyramid[IPU3_UAPI_ANR_PYRAMID_SIZE];
};

Members

anr_stitch_en

enable stitch. Enabled with 1.

reserved

reserved

pyramid

pyramid table as defined by ipu3_uapi_anr_stitch_pyramid default values: { 1, 3, 5 }, { 7, 7, 5 }, { 3, 1, 3 }, { 9, 15, 21 }, { 21, 15, 9 }, { 3, 5, 15 }, { 25, 35, 35 }, { 25, 15, 5 }, { 7, 21, 35 }, { 49, 49, 35 }, { 21, 7, 7 }, { 21, 35, 49 }, { 49, 35, 21 }, { 7, 5, 15 }, { 25, 35, 35 }, { 25, 15, 5 }, { 3, 9, 15 }, { 21, 21, 15 }, { 9, 3, 1 }, { 3, 5, 7 }, { 7, 5, 3}, { 1 }

struct ipu3_uapi_anr_config

ANR config

Definition

struct ipu3_uapi_anr_config {
  struct ipu3_uapi_anr_transform_config transform ;
  struct ipu3_uapi_anr_stitch_config stitch ;
};

Members

transform

advanced noise reduction transform config as specified by ipu3_uapi_anr_transform_config

stitch

create 4x4 patch from 4 surrounding 8x8 patches.

struct ipu3_uapi_acc_param

Accelerator cluster parameters

Definition

struct ipu3_uapi_acc_param {
  struct ipu3_uapi_bnr_static_config bnr;
  struct ipu3_uapi_bnr_static_config_green_disparity green_disparity ;
  struct ipu3_uapi_dm_config dm ;
  struct ipu3_uapi_ccm_mat_config ccm ;
  struct ipu3_uapi_gamma_config gamma ;
  struct ipu3_uapi_csc_mat_config csc ;
  struct ipu3_uapi_cds_params cds ;
  struct ipu3_uapi_shd_config shd ;
  struct ipu3_uapi_yuvp1_iefd_config iefd ;
  struct ipu3_uapi_yuvp1_yds_config yds_c0 ;
  struct ipu3_uapi_yuvp1_chnr_config chnr_c0 ;
  struct ipu3_uapi_yuvp1_y_ee_nr_config y_ee_nr ;
  struct ipu3_uapi_yuvp1_yds_config yds ;
  struct ipu3_uapi_yuvp1_chnr_config chnr ;
  struct ipu3_uapi_yuvp1_yds_config yds2 ;
  struct ipu3_uapi_yuvp2_tcc_static_config tcc ;
  struct ipu3_uapi_anr_config anr;
  struct ipu3_uapi_awb_fr_config_s awb_fr;
  struct ipu3_uapi_ae_config ae;
  struct ipu3_uapi_af_config_s af;
  struct ipu3_uapi_awb_config awb;
};

Members

bnr

parameters for bayer noise reduction static config. See ipu3_uapi_bnr_static_config

green_disparity

disparity static config between gr and gb channel. See ipu3_uapi_bnr_static_config_green_disparity

dm

de-mosaic config. See ipu3_uapi_dm_config

ccm

color correction matrix. See ipu3_uapi_ccm_mat_config

gamma

gamma correction config. See ipu3_uapi_gamma_config

csc

color space conversion matrix. See ipu3_uapi_csc_mat_config

cds

color down sample config. See ipu3_uapi_cds_params

shd

lens shading correction config. See ipu3_uapi_shd_config

iefd

Image enhancement filter and denoise config. ipu3_uapi_yuvp1_iefd_config

yds_c0

y down scaler config. ipu3_uapi_yuvp1_yds_config

chnr_c0

chroma noise reduction config. ipu3_uapi_yuvp1_chnr_config

y_ee_nr

y edge enhancement and noise reduction config. ipu3_uapi_yuvp1_y_ee_nr_config

yds

y down scaler config. See ipu3_uapi_yuvp1_yds_config

chnr

chroma noise reduction config. See ipu3_uapi_yuvp1_chnr_config

yds2

y channel down scaler config. See ipu3_uapi_yuvp1_yds_config

tcc

total color correction config as defined in struct ipu3_uapi_yuvp2_tcc_static_config

anr

advanced noise reduction config.See ipu3_uapi_anr_config

awb_fr

AWB filter response config. See ipu3_uapi_awb_fr_config

ae

auto exposure config As specified by ipu3_uapi_ae_config

af

auto focus config. As specified by ipu3_uapi_af_config

awb

auto white balance config. As specified by ipu3_uapi_awb_config

Description

ACC refers to the HW cluster containing all Fixed Functions (FFs). Each FF implements a specific algorithm.

struct ipu3_uapi_isp_lin_vmem_params

Linearization parameters

Definition

struct ipu3_uapi_isp_lin_vmem_params {
  __s16 lin_lutlow_gr[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutlow_r[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutlow_b[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutlow_gb[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutdif_gr[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutdif_r[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutdif_b[IPU3_UAPI_LIN_LUT_SIZE];
  __s16 lin_lutdif_gb[IPU3_UAPI_LIN_LUT_SIZE];
};

Members

lin_lutlow_gr

linearization look-up table for GR channel interpolation.

lin_lutlow_r

linearization look-up table for R channel interpolation.

lin_lutlow_b

linearization look-up table for B channel interpolation.

lin_lutlow_gb

linearization look-up table for GB channel interpolation. lin_lutlow_gr / lin_lutlow_r / lin_lutlow_b / lin_lutlow_gb <= LIN_MAX_VALUE - 1.

lin_lutdif_gr

lin_lutlow_gr[i+1] - lin_lutlow_gr[i].

lin_lutdif_r

lin_lutlow_r[i+1] - lin_lutlow_r[i].

lin_lutdif_b

lin_lutlow_b[i+1] - lin_lutlow_b[i].

lin_lutdif_gb

lin_lutlow_gb[i+1] - lin_lutlow_gb[i].

struct ipu3_uapi_isp_tnr3_vmem_params

Temporal noise reduction vector memory parameters

Definition

struct ipu3_uapi_isp_tnr3_vmem_params {
  __u16 slope[IPU3_UAPI_ISP_TNR3_VMEM_LEN];
  __u16 reserved1[IPU3_UAPI_ISP_VEC_ELEMS - IPU3_UAPI_ISP_TNR3_VMEM_LEN];
  __u16 sigma[IPU3_UAPI_ISP_TNR3_VMEM_LEN];
  __u16 reserved2[IPU3_UAPI_ISP_VEC_ELEMS - IPU3_UAPI_ISP_TNR3_VMEM_LEN];
};

Members

slope

slope setting in interpolation curve for temporal noise reduction.

reserved1

reserved

sigma

knee point setting in interpolation curve for temporal noise reduction.

reserved2

reserved

struct ipu3_uapi_isp_tnr3_params

Temporal noise reduction v3 parameters

Definition

struct ipu3_uapi_isp_tnr3_params {
  __u32 knee_y1;
  __u32 knee_y2;
  __u32 maxfb_y;
  __u32 maxfb_u;
  __u32 maxfb_v;
  __u32 round_adj_y;
  __u32 round_adj_u;
  __u32 round_adj_v;
  __u32 ref_buf_select;
};

Members

knee_y1

Knee point TNR3 assumes standard deviation of Y,U and V at Y1 are TnrY1_Sigma_Y, U and V.

knee_y2

Knee point TNR3 assumes standard deviation of Y,U and V at Y2 are TnrY2_Sigma_Y, U and V.

maxfb_y

Max feedback gain for Y

maxfb_u

Max feedback gain for U

maxfb_v

Max feedback gain for V

round_adj_y

rounding Adjust for Y

round_adj_u

rounding Adjust for U

round_adj_v

rounding Adjust for V

ref_buf_select

selection of the reference frame buffer to be used.

struct ipu3_uapi_isp_xnr3_vmem_params

Extreme noise reduction v3 vector memory parameters

Definition

struct ipu3_uapi_isp_xnr3_vmem_params {
  __u16 x[IPU3_UAPI_ISP_VEC_ELEMS];
  __u16 a[IPU3_UAPI_ISP_VEC_ELEMS];
  __u16 b[IPU3_UAPI_ISP_VEC_ELEMS];
  __u16 c[IPU3_UAPI_ISP_VEC_ELEMS];
};

Members

x

xnr3 parameters.

a

xnr3 parameters.

b

xnr3 parameters.

c

xnr3 parameters.

struct ipu3_uapi_xnr3_alpha_params

Extreme noise reduction v3 alpha tuning parameters

Definition

struct ipu3_uapi_xnr3_alpha_params {
  __u32 y0;
  __u32 u0;
  __u32 v0;
  __u32 ydiff;
  __u32 udiff;
  __u32 vdiff;
};

Members

y0

Sigma for Y range similarity in dark area.

u0

Sigma for U range similarity in dark area.

v0

Sigma for V range similarity in dark area.

ydiff

Sigma difference for Y between bright area and dark area.

udiff

Sigma difference for U between bright area and dark area.

vdiff

Sigma difference for V between bright area and dark area.

struct ipu3_uapi_xnr3_coring_params

Extreme noise reduction v3 coring parameters

Definition

struct ipu3_uapi_xnr3_coring_params {
  __u32 u0;
  __u32 v0;
  __u32 udiff;
  __u32 vdiff;
};

Members

u0

Coring Threshold of U channel in dark area.

v0

Coring Threshold of V channel in dark area.

udiff

Threshold difference of U channel between bright and dark area.

vdiff

Threshold difference of V channel between bright and dark area.

struct ipu3_uapi_xnr3_blending_params

Blending factor

Definition

struct ipu3_uapi_xnr3_blending_params {
  __u32 strength;
};

Members

strength

The factor for blending output with input. This is tuning parameterHigher values lead to more aggressive XNR operation.

struct ipu3_uapi_isp_xnr3_params

Extreme noise reduction v3 parameters

Definition

struct ipu3_uapi_isp_xnr3_params {
  struct ipu3_uapi_xnr3_alpha_params alpha;
  struct ipu3_uapi_xnr3_coring_params coring;
  struct ipu3_uapi_xnr3_blending_params blending;
};

Members

alpha

parameters for xnr3 alpha. See ipu3_uapi_xnr3_alpha_params

coring

parameters for xnr3 coring. See ipu3_uapi_xnr3_coring_params

blending

parameters for xnr3 blending. See ipu3_uapi_xnr3_blending_params

struct ipu3_uapi_obgrid_param

Optical black level compensation parameters

Definition

struct ipu3_uapi_obgrid_param {
  __u16 gr;
  __u16 r;
  __u16 b;
  __u16 gb;
};

Members

gr

Grid table values for color GR

r

Grid table values for color R

b

Grid table values for color B

gb

Grid table values for color GB

Description

Black level is different for red, green, and blue channels. So black level compensation is different per channel.

struct ipu3_uapi_flags

bits to indicate which pipeline needs update

Definition

struct ipu3_uapi_flags {
  __u32 gdc:1;
  __u32 obgrid:1;
  __u32 reserved1:30;
  __u32 acc_bnr:1;
  __u32 acc_green_disparity:1;
  __u32 acc_dm:1;
  __u32 acc_ccm:1;
  __u32 acc_gamma:1;
  __u32 acc_csc:1;
  __u32 acc_cds:1;
  __u32 acc_shd:1;
  __u32 reserved2:2;
  __u32 acc_iefd:1;
  __u32 acc_yds_c0:1;
  __u32 acc_chnr_c0:1;
  __u32 acc_y_ee_nr:1;
  __u32 acc_yds:1;
  __u32 acc_chnr:1;
  __u32 acc_ytm:1;
  __u32 acc_yds2:1;
  __u32 acc_tcc:1;
  __u32 acc_dpc:1;
  __u32 acc_bds:1;
  __u32 acc_anr:1;
  __u32 acc_awb_fr:1;
  __u32 acc_ae:1;
  __u32 acc_af:1;
  __u32 acc_awb:1;
  __u32 reserved3:4;
  __u32 lin_vmem_params:1;
  __u32 tnr3_vmem_params:1;
  __u32 xnr3_vmem_params:1;
  __u32 tnr3_dmem_params:1;
  __u32 xnr3_dmem_params:1;
  __u32 reserved4:1;
  __u32 obgrid_param:1;
  __u32 reserved5:25;
};

Members

gdc

0 = no update, 1 = update.

obgrid

0 = no update, 1 = update.

reserved1

Not used.

acc_bnr

0 = no update, 1 = update.

acc_green_disparity

0 = no update, 1 = update.

acc_dm

0 = no update, 1 = update.

acc_ccm

0 = no update, 1 = update.

acc_gamma

0 = no update, 1 = update.

acc_csc

0 = no update, 1 = update.

acc_cds

0 = no update, 1 = update.

acc_shd

0 = no update, 1 = update.

reserved2

Not used.

acc_iefd

0 = no update, 1 = update.

acc_yds_c0

0 = no update, 1 = update.

acc_chnr_c0

0 = no update, 1 = update.

acc_y_ee_nr

0 = no update, 1 = update.

acc_yds

0 = no update, 1 = update.

acc_chnr

0 = no update, 1 = update.

acc_ytm

0 = no update, 1 = update.

acc_yds2

0 = no update, 1 = update.

acc_tcc

0 = no update, 1 = update.

acc_dpc

0 = no update, 1 = update.

acc_bds

0 = no update, 1 = update.

acc_anr

0 = no update, 1 = update.

acc_awb_fr

0 = no update, 1 = update.

acc_ae

0 = no update, 1 = update.

acc_af

0 = no update, 1 = update.

acc_awb

0 = no update, 1 = update.

reserved3

Not used.

lin_vmem_params

0 = no update, 1 = update.

tnr3_vmem_params

0 = no update, 1 = update.

xnr3_vmem_params

0 = no update, 1 = update.

tnr3_dmem_params

0 = no update, 1 = update.

xnr3_dmem_params

0 = no update, 1 = update.

reserved4

Not used.

obgrid_param

0 = no update, 1 = update.

reserved5

Not used.

struct ipu3_uapi_params

V4L2_META_FMT_IPU3_PARAMS

Definition

struct ipu3_uapi_params {
  struct ipu3_uapi_flags use ;
  struct ipu3_uapi_acc_param acc_param;
  struct ipu3_uapi_isp_lin_vmem_params lin_vmem_params;
  struct ipu3_uapi_isp_tnr3_vmem_params tnr3_vmem_params;
  struct ipu3_uapi_isp_xnr3_vmem_params xnr3_vmem_params;
  struct ipu3_uapi_isp_tnr3_params tnr3_dmem_params;
  struct ipu3_uapi_isp_xnr3_params xnr3_dmem_params;
  struct ipu3_uapi_obgrid_param obgrid_param;
};

Members

use

select which parameters to apply, see ipu3_uapi_flags

acc_param

ACC parameters, as specified by ipu3_uapi_acc_param

lin_vmem_params

linearization VMEM, as specified by ipu3_uapi_isp_lin_vmem_params

tnr3_vmem_params

tnr3 VMEM as specified by ipu3_uapi_isp_tnr3_vmem_params

xnr3_vmem_params

xnr3 VMEM as specified by ipu3_uapi_isp_xnr3_vmem_params

tnr3_dmem_params

tnr3 DMEM as specified by ipu3_uapi_isp_tnr3_params

xnr3_dmem_params

xnr3 DMEM as specified by ipu3_uapi_isp_xnr3_params

obgrid_param

obgrid parameters as specified by ipu3_uapi_obgrid_param

Description

The video queue “parameters” is of format V4L2_META_FMT_IPU3_PARAMS. This is a “single plane” v4l2_meta_format using V4L2_BUF_TYPE_META_OUTPUT.

struct ipu3_uapi_params as defined below contains a lot of parameters and ipu3_uapi_flags selects which parameters to apply.