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).
height
Grid vertical dimensions, in number of grid cells.
block_width_log2
Log2 of the width of each cell in pixels. for (2^3, 2^4, 2^5, 2^6, 2^7), values [3, 7].
block_height_log2
Log2 of the height of each cell in pixels. for (2^3, 2^4, 2^5, 2^6, 2^7), values [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_raw_buffer

AWB raw buffer

Definition

struct ipu3_uapi_awb_raw_buffer {
  __u8 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
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
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

Precision u3.13, range [0, 8). White balance correction is done by applying a multiplicative gain to each color channels prior to BNR.

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.