2.13.3. V4L2_META_FMT_RK_ISP1_PARAMS (‘rk1p’), V4L2_META_FMT_RK_ISP1_STAT_3A (‘rk1s’)¶
2.13.3.1. Configuration parameters¶
The configuration parameters are passed to the
rkisp1_params metadata output video node, using
the v4l2_meta_format
interface. The buffer contains
a single instance of the C structure rkisp1_params_cfg
defined in
rkisp1-config.h
. So the structure can be obtained from the buffer by:
struct rkisp1_params_cfg *params = (struct rkisp1_params_cfg*) buffer;
2.13.3.2. 3A and histogram statistics¶
The ISP1 device collects different statistics over an input Bayer frame.
Those statistics are obtained from the rkisp1_stats
metadata capture video node,
using the v4l2_meta_format
interface. The buffer contains a single
instance of the C structure rkisp1_stat_buffer
defined in
rkisp1-config.h
. So the structure can be obtained from the buffer by:
struct rkisp1_stat_buffer *stats = (struct rkisp1_stat_buffer*) buffer;
The statistics collected are Exposure, AWB (Auto-white balance), Histogram and
AF (Auto-focus). See rkisp1_stat_buffer
for details of the statistics.
The 3A statistics and configuration parameters described here are usually consumed and produced by dedicated user space libraries that comprise the important tuning tools using software control loop.
2.13.3.3. rkisp1 uAPI data types¶
-
enum rkisp1_cif_isp_version¶
ISP variants
Constants
RKISP1_V10
Used at least in RK3288 and RK3399.
RKISP1_V11
Declared in the original vendor code, but not used. Same number of entries in grids and histogram as v10.
RKISP1_V12
Used at least in RK3326 and PX30.
RKISP1_V13
Used at least in RK1808. Same number of entries in grids and histogram as v12.
RKISP1_V_IMX8MP
Used in at least i.MX8MP. Same number of entries in grids and histogram as v10.
-
enum rkisp1_cif_isp_exp_ctrl_autostop¶
stop modes
Constants
RKISP1_CIF_ISP_EXP_CTRL_AUTOSTOP_0
continuous measurement
RKISP1_CIF_ISP_EXP_CTRL_AUTOSTOP_1
stop measuring after a complete frame
-
enum rkisp1_cif_isp_exp_meas_mode¶
Exposure measure mode
Constants
RKISP1_CIF_ISP_EXP_MEASURING_MODE_0
Y = 16 + 0.25R + 0.5G + 0.1094B
RKISP1_CIF_ISP_EXP_MEASURING_MODE_1
Y = (R + G + B) x (85/256)
-
struct rkisp1_cif_isp_window¶
measurement window.
Definition:
struct rkisp1_cif_isp_window {
__u16 h_offs;
__u16 v_offs;
__u16 h_size;
__u16 v_size;
};
Members
h_offs
the horizontal offset of the window from the left of the frame in pixels.
v_offs
the vertical offset of the window from the top of the frame in pixels.
h_size
the horizontal size of the window in pixels
v_size
the vertical size of the window in pixels.
Description
Measurements are calculated per window inside the frame. This struct represents a window for a measurement.
-
struct rkisp1_cif_isp_bls_fixed_val¶
BLS fixed subtraction values
Definition:
struct rkisp1_cif_isp_bls_fixed_val {
__s16 r;
__s16 gr;
__s16 gb;
__s16 b;
};
Members
r
Fixed (signed!) subtraction value for Bayer pattern R
gr
Fixed (signed!) subtraction value for Bayer pattern Gr
gb
Fixed (signed!) subtraction value for Bayer pattern Gb
b
Fixed (signed!) subtraction value for Bayer pattern B
Description
The values will be subtracted from the sensor values. Therefore a negative value means addition instead of subtraction!
-
struct rkisp1_cif_isp_bls_config¶
Configuration used by black level subtraction
Definition:
struct rkisp1_cif_isp_bls_config {
__u8 enable_auto;
__u8 en_windows;
struct rkisp1_cif_isp_window bls_window1;
struct rkisp1_cif_isp_window bls_window2;
__u8 bls_samples;
struct rkisp1_cif_isp_bls_fixed_val fixed_val;
};
Members
enable_auto
Automatic mode activated means that the measured values are subtracted. Otherwise the fixed subtraction values will be subtracted.
en_windows
enabled window
bls_window1
Measurement window 1 size
bls_window2
Measurement window 2 size
bls_samples
Set amount of measured pixels for each Bayer position (A, B,C and D) to 2^bls_samples.
fixed_val
Fixed subtraction values
-
struct rkisp1_cif_isp_dpcc_methods_config¶
DPCC methods set configuration
Definition:
struct rkisp1_cif_isp_dpcc_methods_config {
__u32 method;
__u32 line_thresh;
__u32 line_mad_fac;
__u32 pg_fac;
__u32 rnd_thresh;
__u32 rg_fac;
};
Members
method
Method enable bits (RKISP1_CIF_ISP_DPCC_METHODS_SET_*)
line_thresh
Line threshold (RKISP1_CIF_ISP_DPCC_LINE_THRESH_*)
line_mad_fac
Line Mean Absolute Difference factor (RKISP1_CIF_ISP_DPCC_LINE_MAD_FAC_*)
pg_fac
Peak gradient factor (RKISP1_CIF_ISP_DPCC_PG_FAC_*)
rnd_thresh
Rank Neighbor Difference threshold (RKISP1_CIF_ISP_DPCC_RND_THRESH_*)
rg_fac
Rank gradient factor (RKISP1_CIF_ISP_DPCC_RG_FAC_*)
Description
This structure stores the configuration of one set of methods for the DPCC algorithm. Multiple methods can be selected in each set (independently for the Green and Red/Blue components) through the method field, the result is the logical AND of all enabled methods. The remaining fields set thresholds and factors for each method.
-
struct rkisp1_cif_isp_dpcc_config¶
Configuration used by DPCC
Definition:
struct rkisp1_cif_isp_dpcc_config {
__u32 mode;
__u32 output_mode;
__u32 set_use;
struct rkisp1_cif_isp_dpcc_methods_config methods[RKISP1_CIF_ISP_DPCC_METHODS_MAX];
__u32 ro_limits;
__u32 rnd_offs;
};
Members
mode
DPCC mode (RKISP1_CIF_ISP_DPCC_MODE_*)
output_mode
Interpolation output mode (RKISP1_CIF_ISP_DPCC_OUTPUT_MODE_*)
set_use
Methods sets selection (RKISP1_CIF_ISP_DPCC_SET_USE_*)
methods
Methods sets configuration
ro_limits
Rank order limits (RKISP1_CIF_ISP_DPCC_RO_LIMITS_*)
rnd_offs
Differential rank offsets for rank neighbor difference (RKISP1_CIF_ISP_DPCC_RND_OFFS_*)
Description
Configuration used by Defect Pixel Cluster Correction. Three sets of methods can be configured and selected through the set_use field. The result is the logical OR of all enabled sets.
-
struct rkisp1_cif_isp_gamma_corr_curve¶
gamma curve point definition y-axis (output).
Definition:
struct rkisp1_cif_isp_gamma_corr_curve {
__u16 gamma_y[RKISP1_CIF_ISP_DEGAMMA_CURVE_SIZE];
};
Members
gamma_y
the values for the y-axis of gamma curve points. Each value is 12 bit.
Description
The reset values define a linear curve which has the same effect as bypass. Reset values are: gamma_y[0] = 0x0000, gamma_y[1] = 0x0100, ... gamma_y[15] = 0x0f00, gamma_y[16] = 0xfff
-
struct rkisp1_cif_isp_gamma_curve_x_axis_pnts¶
De-Gamma Curve definition x increments (sampling points). gamma_dx0 is for the lower samples (1-8), gamma_dx1 is for the higher samples (9-16). The reset values for both fields is 0x44444444. This means that each sample is 4 units away from the previous one on the x-axis.
Definition:
struct rkisp1_cif_isp_gamma_curve_x_axis_pnts {
__u32 gamma_dx0;
__u32 gamma_dx1;
};
Members
gamma_dx0
gamma curve sample points definitions. Bits 0:2 for sample 1. Bit 3 unused. Bits 4:6 for sample 2. bit 7 unused ... Bits 28:30 for sample 8. Bit 31 unused
gamma_dx1
gamma curve sample points definitions. Bits 0:2 for sample 9. Bit 3 unused. Bits 4:6 for sample 10. bit 7 unused ... Bits 28:30 for sample 16. Bit 31 unused
-
struct rkisp1_cif_isp_sdg_config¶
Configuration used by sensor degamma
Definition:
struct rkisp1_cif_isp_sdg_config {
struct rkisp1_cif_isp_gamma_corr_curve curve_r;
struct rkisp1_cif_isp_gamma_corr_curve curve_g;
struct rkisp1_cif_isp_gamma_corr_curve curve_b;
struct rkisp1_cif_isp_gamma_curve_x_axis_pnts xa_pnts;
};
Members
curve_r
gamma curve point definition axis for red
curve_g
gamma curve point definition axis for green
curve_b
gamma curve point definition axis for blue
xa_pnts
x axis increments
-
struct rkisp1_cif_isp_lsc_config¶
Configuration used by Lens shading correction
Definition:
struct rkisp1_cif_isp_lsc_config {
__u16 r_data_tbl[RKISP1_CIF_ISP_LSC_SAMPLES_MAX][RKISP1_CIF_ISP_LSC_SAMPLES_MAX];
__u16 gr_data_tbl[RKISP1_CIF_ISP_LSC_SAMPLES_MAX][RKISP1_CIF_ISP_LSC_SAMPLES_MAX];
__u16 gb_data_tbl[RKISP1_CIF_ISP_LSC_SAMPLES_MAX][RKISP1_CIF_ISP_LSC_SAMPLES_MAX];
__u16 b_data_tbl[RKISP1_CIF_ISP_LSC_SAMPLES_MAX][RKISP1_CIF_ISP_LSC_SAMPLES_MAX];
__u16 x_grad_tbl[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];
__u16 y_grad_tbl[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];
__u16 x_size_tbl[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];
__u16 y_size_tbl[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];
__u16 config_width;
__u16 config_height;
};
Members
r_data_tbl
sample table red
gr_data_tbl
sample table green (red)
gb_data_tbl
sample table green (blue)
b_data_tbl
sample table blue
x_grad_tbl
gradient table x
y_grad_tbl
gradient table y
x_size_tbl
size table x
y_size_tbl
size table y
config_width
not used at the moment
config_height
not used at the moment
-
struct rkisp1_cif_isp_ie_config¶
Configuration used by image effects
Definition:
struct rkisp1_cif_isp_ie_config {
__u16 effect;
__u16 color_sel;
__u16 eff_mat_1;
__u16 eff_mat_2;
__u16 eff_mat_3;
__u16 eff_mat_4;
__u16 eff_mat_5;
__u16 eff_tint;
};
Members
effect
values from ‘enum v4l2_colorfx’. Possible values are: V4L2_COLORFX_SEPIA, V4L2_COLORFX_SET_CBCR, V4L2_COLORFX_AQUA, V4L2_COLORFX_EMBOSS, V4L2_COLORFX_SKETCH, V4L2_COLORFX_BW, V4L2_COLORFX_NEGATIVE
color_sel
bits 0:2 - colors bitmask (001 - blue, 010 - green, 100 - red). bits 8:15 - Threshold value of the RGB colors for the color selection effect.
eff_mat_1
3x3 Matrix Coefficients for Emboss Effect 1
eff_mat_2
3x3 Matrix Coefficients for Emboss Effect 2
eff_mat_3
3x3 Matrix Coefficients for Emboss 3/Sketch 1
eff_mat_4
3x3 Matrix Coefficients for Sketch Effect 2
eff_mat_5
3x3 Matrix Coefficients for Sketch Effect 3
eff_tint
Chrominance increment values of tint (used for sepia effect)
-
struct rkisp1_cif_isp_cproc_config¶
Configuration used by Color Processing
Definition:
struct rkisp1_cif_isp_cproc_config {
__u8 c_out_range;
__u8 y_in_range;
__u8 y_out_range;
__u8 contrast;
__u8 brightness;
__u8 sat;
__u8 hue;
};
Members
c_out_range
Chrominance pixel clipping range at output. (0 for limit, 1 for full)
y_in_range
Luminance pixel clipping range at output.
y_out_range
Luminance pixel clipping range at output.
contrast
00~ff, 0.0~1.992
brightness
80~7F, -128~+127
sat
saturation, 00~FF, 0.0~1.992
hue
80~7F, -90~+87.188
-
struct rkisp1_cif_isp_awb_meas_config¶
Configuration for the AWB statistics
Definition:
struct rkisp1_cif_isp_awb_meas_config {
struct rkisp1_cif_isp_window awb_wnd;
__u32 awb_mode;
__u8 max_y;
__u8 min_y;
__u8 max_csum;
__u8 min_c;
__u8 frames;
__u8 awb_ref_cr;
__u8 awb_ref_cb;
__u8 enable_ymax_cmp;
};
Members
awb_wnd
white balance measurement window (in pixels)
awb_mode
the awb meas mode. From enum rkisp1_cif_isp_awb_mode_type.
max_y
only pixels values < max_y contribute to awb measurement, set to 0 to disable this feature
min_y
only pixels values > min_y contribute to awb measurement
max_csum
Chrominance sum maximum value, only consider pixels with Cb+Cr, smaller than threshold for awb measurements
min_c
Chrominance minimum value, only consider pixels with Cb/Cr each greater than threshold value for awb measurements
frames
number of frames - 1 used for mean value calculation (ucFrames=0 means 1 Frame)
awb_ref_cr
reference Cr value for AWB regulation, target for AWB
awb_ref_cb
reference Cb value for AWB regulation, target for AWB
enable_ymax_cmp
enable Y_MAX compare (Not valid in RGB measurement mode.)
-
struct rkisp1_cif_isp_awb_gain_config¶
Configuration used by auto white balance gain
Definition:
struct rkisp1_cif_isp_awb_gain_config {
__u16 gain_red;
__u16 gain_green_r;
__u16 gain_blue;
__u16 gain_green_b;
};
Members
gain_red
gain value for red component.
gain_green_r
gain value for green component in red line.
gain_blue
gain value for blue component.
gain_green_b
gain value for green component in blue line.
Description
All fields in this struct are 10 bit, where: 0x100h = 1, unsigned integer value, range 0 to 4 with 8 bit fractional part.
out_data_x = ( AWB_GAIN_X * in_data + 128) >> 8
-
struct rkisp1_cif_isp_flt_config¶
Configuration used by ISP filtering
Definition:
struct rkisp1_cif_isp_flt_config {
__u32 mode;
__u8 grn_stage1;
__u8 chr_h_mode;
__u8 chr_v_mode;
__u32 thresh_bl0;
__u32 thresh_bl1;
__u32 thresh_sh0;
__u32 thresh_sh1;
__u32 lum_weight;
__u32 fac_sh1;
__u32 fac_sh0;
__u32 fac_mid;
__u32 fac_bl0;
__u32 fac_bl1;
};
Members
mode
ISP_FILT_MODE register fields (from enum rkisp1_cif_isp_flt_mode)
grn_stage1
Green filter stage 1 select (range 0x0...0x8)
chr_h_mode
Chroma filter horizontal mode
chr_v_mode
Chroma filter vertical mode
thresh_bl0
If thresh_bl1 < sum_grad < thresh_bl0 then fac_bl0 is selected (blurring th)
thresh_bl1
If sum_grad < thresh_bl1 then fac_bl1 is selected (blurring th)
thresh_sh0
If thresh_sh0 < sum_grad < thresh_sh1 then thresh_sh0 is selected (sharpening th)
thresh_sh1
If thresh_sh1 < sum_grad then thresh_sh1 is selected (sharpening th)
lum_weight
Parameters for luminance weight function.
fac_sh1
filter factor for sharp1 level
fac_sh0
filter factor for sharp0 level
fac_mid
filter factor for mid level and for static filter mode
fac_bl0
filter factor for blur 0 level
fac_bl1
filter factor for blur 1 level (max blur)
Description
All 4 threshold fields (thresh_*) are 10 bits. All 6 factor fields (fac_*) are 6 bits.
-
struct rkisp1_cif_isp_bdm_config¶
Configuration used by Bayer DeMosaic
Definition:
struct rkisp1_cif_isp_bdm_config {
__u8 demosaic_th;
};
Members
demosaic_th
threshold for bayer demosaicing texture detection
-
struct rkisp1_cif_isp_ctk_config¶
Configuration used by Cross Talk correction
Definition:
struct rkisp1_cif_isp_ctk_config {
__u16 coeff[3][3];
__u16 ct_offset[3];
};
Members
coeff
color correction matrix. Values are 11-bit signed fixed-point numbers with 4 bit integer and 7 bit fractional part, ranging from -8 (0x400) to +7.992 (0x3FF). 0 is represented by 0x000 and a coefficient value of 1 as 0x080.
ct_offset
Red, Green, Blue offsets for the crosstalk correction matrix
-
struct rkisp1_cif_isp_goc_config¶
Configuration used by Gamma Out correction
Definition:
struct rkisp1_cif_isp_goc_config {
__u32 mode;
__u16 gamma_y[RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES];
};
Members
mode
goc mode (from enum rkisp1_cif_isp_goc_mode)
gamma_y
gamma out curve y-axis for all color components
Description
The number of entries of gamma_y depends on the hardware revision as is reported by the hw_revision field of the struct media_device_info that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
V10 has RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V10 entries, V12 has RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V12 entries. RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES is equal to the maximum of the two.
-
struct rkisp1_cif_isp_hst_config¶
Configuration for Histogram statistics
Definition:
struct rkisp1_cif_isp_hst_config {
__u32 mode;
__u8 histogram_predivider;
struct rkisp1_cif_isp_window meas_window;
__u8 hist_weight[RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE];
};
Members
mode
histogram mode (from enum rkisp1_cif_isp_histogram_mode)
histogram_predivider
process every stepsize pixel, all other pixels are skipped
meas_window
coordinates of the measure window
hist_weight
weighting factor for sub-windows
Description
The number of entries of hist_weight depends on the hardware revision as is reported by the hw_revision field of the struct media_device_info that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
V10 has RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V10 entries, V12 has RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V12 entries. RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE is equal to the maximum of the two.
-
struct rkisp1_cif_isp_aec_config¶
Configuration for Auto Exposure statistics
Definition:
struct rkisp1_cif_isp_aec_config {
__u32 mode;
__u32 autostop;
struct rkisp1_cif_isp_window meas_window;
};
Members
mode
Exposure measure mode (from
enum rkisp1_cif_isp_exp_meas_mode
)autostop
stop mode (from
enum rkisp1_cif_isp_exp_ctrl_autostop
)meas_window
coordinates of the measure window
-
struct rkisp1_cif_isp_afc_config¶
Configuration for the Auto Focus statistics
Definition:
struct rkisp1_cif_isp_afc_config {
__u8 num_afm_win;
struct rkisp1_cif_isp_window afm_win[RKISP1_CIF_ISP_AFM_MAX_WINDOWS];
__u32 thres;
__u32 var_shift;
};
Members
num_afm_win
max RKISP1_CIF_ISP_AFM_MAX_WINDOWS
afm_win
coordinates of the meas window
thres
threshold used for minimizing the influence of noise
var_shift
the number of bits for the shift operation at the end of the calculation chain.
-
enum rkisp1_cif_isp_dpf_gain_usage¶
dpf gain usage
Constants
RKISP1_CIF_ISP_DPF_GAIN_USAGE_DISABLED
don’t use any gains in preprocessing stage
RKISP1_CIF_ISP_DPF_GAIN_USAGE_NF_GAINS
use only the noise function gains from registers DPF_NF_GAIN_R, ...
RKISP1_CIF_ISP_DPF_GAIN_USAGE_LSC_GAINS
use only the gains from LSC module
RKISP1_CIF_ISP_DPF_GAIN_USAGE_NF_LSC_GAINS
use the noise function gains and the gains from LSC module
RKISP1_CIF_ISP_DPF_GAIN_USAGE_AWB_GAINS
use only the gains from AWB module
RKISP1_CIF_ISP_DPF_GAIN_USAGE_AWB_LSC_GAINS
use the gains from AWB and LSC module
RKISP1_CIF_ISP_DPF_GAIN_USAGE_MAX
upper border (only for an internal evaluation)
-
enum rkisp1_cif_isp_dpf_rb_filtersize¶
Red and blue filter sizes
Constants
RKISP1_CIF_ISP_DPF_RB_FILTERSIZE_13x9
red and blue filter kernel size 13x9 (means 7x5 active pixel)
RKISP1_CIF_ISP_DPF_RB_FILTERSIZE_9x9
red and blue filter kernel size 9x9 (means 5x5 active pixel)
-
enum rkisp1_cif_isp_dpf_nll_scale_mode¶
dpf noise level scale mode
Constants
RKISP1_CIF_ISP_NLL_SCALE_LINEAR
use a linear scaling
RKISP1_CIF_ISP_NLL_SCALE_LOGARITHMIC
use a logarithmic scaling
-
struct rkisp1_cif_isp_dpf_nll¶
Noise level lookup
Definition:
struct rkisp1_cif_isp_dpf_nll {
__u16 coeff[RKISP1_CIF_ISP_DPF_MAX_NLF_COEFFS];
__u32 scale_mode;
};
Members
coeff
Noise level Lookup coefficient
scale_mode
dpf noise level scale mode (from
enum rkisp1_cif_isp_dpf_nll_scale_mode
)
-
struct rkisp1_cif_isp_dpf_rb_flt¶
Red blue filter config
Definition:
struct rkisp1_cif_isp_dpf_rb_flt {
__u32 fltsize;
__u8 spatial_coeff[RKISP1_CIF_ISP_DPF_MAX_SPATIAL_COEFFS];
__u8 r_enable;
__u8 b_enable;
};
Members
fltsize
The filter size for the red and blue pixels (from
enum rkisp1_cif_isp_dpf_rb_filtersize
)spatial_coeff
Spatial weights
r_enable
enable filter processing for red pixels
b_enable
enable filter processing for blue pixels
-
struct rkisp1_cif_isp_dpf_g_flt¶
Green filter Configuration
Definition:
struct rkisp1_cif_isp_dpf_g_flt {
__u8 spatial_coeff[RKISP1_CIF_ISP_DPF_MAX_SPATIAL_COEFFS];
__u8 gr_enable;
__u8 gb_enable;
};
Members
spatial_coeff
Spatial weights
gr_enable
enable filter processing for green pixels in green/red lines
gb_enable
enable filter processing for green pixels in green/blue lines
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struct rkisp1_cif_isp_dpf_gain¶
Noise function Configuration
Definition:
struct rkisp1_cif_isp_dpf_gain {
__u32 mode;
__u16 nf_r_gain;
__u16 nf_b_gain;
__u16 nf_gr_gain;
__u16 nf_gb_gain;
};
Members
mode
dpf gain usage (from
enum rkisp1_cif_isp_dpf_gain_usage
)nf_r_gain
Noise function Gain that replaces the AWB gain for red pixels
nf_b_gain
Noise function Gain that replaces the AWB gain for blue pixels
nf_gr_gain
Noise function Gain that replaces the AWB gain for green pixels in a red line
nf_gb_gain
Noise function Gain that replaces the AWB gain for green pixels in a blue line
-
struct rkisp1_cif_isp_dpf_config¶
Configuration used by De-noising pre-filter
Definition:
struct rkisp1_cif_isp_dpf_config {
struct rkisp1_cif_isp_dpf_gain gain;
struct rkisp1_cif_isp_dpf_g_flt g_flt;
struct rkisp1_cif_isp_dpf_rb_flt rb_flt;
struct rkisp1_cif_isp_dpf_nll nll;
};
Members
gain
noise function gain
g_flt
green filter config
rb_flt
red blue filter config
nll
noise level lookup
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struct rkisp1_cif_isp_dpf_strength_config¶
strength of the filter
Definition:
struct rkisp1_cif_isp_dpf_strength_config {
__u8 r;
__u8 g;
__u8 b;
};
Members
r
filter strength of the RED filter
g
filter strength of the GREEN filter
b
filter strength of the BLUE filter
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struct rkisp1_cif_isp_isp_other_cfg¶
Parameters for some blocks in rockchip isp1
Definition:
struct rkisp1_cif_isp_isp_other_cfg {
struct rkisp1_cif_isp_dpcc_config dpcc_config;
struct rkisp1_cif_isp_bls_config bls_config;
struct rkisp1_cif_isp_sdg_config sdg_config;
struct rkisp1_cif_isp_lsc_config lsc_config;
struct rkisp1_cif_isp_awb_gain_config awb_gain_config;
struct rkisp1_cif_isp_flt_config flt_config;
struct rkisp1_cif_isp_bdm_config bdm_config;
struct rkisp1_cif_isp_ctk_config ctk_config;
struct rkisp1_cif_isp_goc_config goc_config;
struct rkisp1_cif_isp_dpf_config dpf_config;
struct rkisp1_cif_isp_dpf_strength_config dpf_strength_config;
struct rkisp1_cif_isp_cproc_config cproc_config;
struct rkisp1_cif_isp_ie_config ie_config;
};
Members
dpcc_config
Defect Pixel Cluster Correction config
bls_config
black level subtraction config
sdg_config
sensor degamma config
lsc_config
Lens Shade config
awb_gain_config
Auto White balance gain config
flt_config
filter config
bdm_config
demosaic config
ctk_config
cross talk config
goc_config
gamma out config
dpf_config
De-noising pre-filter config
dpf_strength_config
dpf strength config
cproc_config
color process config
ie_config
image effects config
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struct rkisp1_cif_isp_isp_meas_cfg¶
Rockchip ISP1 Measure Parameters
Definition:
struct rkisp1_cif_isp_isp_meas_cfg {
struct rkisp1_cif_isp_awb_meas_config awb_meas_config;
struct rkisp1_cif_isp_hst_config hst_config;
struct rkisp1_cif_isp_aec_config aec_config;
struct rkisp1_cif_isp_afc_config afc_config;
};
Members
awb_meas_config
auto white balance config
hst_config
histogram config
aec_config
auto exposure config
afc_config
auto focus config
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struct rkisp1_params_cfg¶
Rockchip ISP1 Input Parameters Meta Data
Definition:
struct rkisp1_params_cfg {
__u32 module_en_update;
__u32 module_ens;
__u32 module_cfg_update;
struct rkisp1_cif_isp_isp_meas_cfg meas;
struct rkisp1_cif_isp_isp_other_cfg others;
};
Members
module_en_update
mask the enable bits of which module should be updated
module_ens
mask the enable value of each module, only update the module which correspond bit was set in module_en_update
module_cfg_update
mask the config bits of which module should be updated
meas
measurement config
others
other config
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struct rkisp1_cif_isp_awb_meas¶
AWB measured values
Definition:
struct rkisp1_cif_isp_awb_meas {
__u32 cnt;
__u8 mean_y_or_g;
__u8 mean_cb_or_b;
__u8 mean_cr_or_r;
};
Members
cnt
White pixel count, number of “white pixels” found during last measurement
mean_y_or_g
Mean value of Y within window and frames, Green if RGB is selected.
mean_cb_or_b
Mean value of Cb within window and frames, Blue if RGB is selected.
mean_cr_or_r
Mean value of Cr within window and frames, Red if RGB is selected.
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struct rkisp1_cif_isp_awb_stat¶
statistics automatic white balance data
Definition:
struct rkisp1_cif_isp_awb_stat {
struct rkisp1_cif_isp_awb_meas awb_mean[RKISP1_CIF_ISP_AWB_MAX_GRID];
};
Members
awb_mean
Mean measured data
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struct rkisp1_cif_isp_bls_meas_val¶
BLS measured values
Definition:
struct rkisp1_cif_isp_bls_meas_val {
__u16 meas_r;
__u16 meas_gr;
__u16 meas_gb;
__u16 meas_b;
};
Members
meas_r
Mean measured value for Bayer pattern R
meas_gr
Mean measured value for Bayer pattern Gr
meas_gb
Mean measured value for Bayer pattern Gb
meas_b
Mean measured value for Bayer pattern B
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struct rkisp1_cif_isp_ae_stat¶
statistics auto exposure data
Definition:
struct rkisp1_cif_isp_ae_stat {
__u8 exp_mean[RKISP1_CIF_ISP_AE_MEAN_MAX];
struct rkisp1_cif_isp_bls_meas_val bls_val;
};
Members
exp_mean
Mean luminance value of block xx
bls_val
BLS measured values
Description
The number of entries of exp_mean depends on the hardware revision as is reported by the hw_revision field of the struct media_device_info that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
V10 has RKISP1_CIF_ISP_AE_MEAN_MAX_V10 entries, V12 has RKISP1_CIF_ISP_AE_MEAN_MAX_V12 entries. RKISP1_CIF_ISP_AE_MEAN_MAX is equal to the maximum of the two.
Image is divided into 5x5 blocks on V10 and 9x9 blocks on V12.
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struct rkisp1_cif_isp_af_meas_val¶
AF measured values
Definition:
struct rkisp1_cif_isp_af_meas_val {
__u32 sum;
__u32 lum;
};
Members
sum
sharpness value
lum
luminance value
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struct rkisp1_cif_isp_af_stat¶
statistics auto focus data
Definition:
struct rkisp1_cif_isp_af_stat {
struct rkisp1_cif_isp_af_meas_val window[RKISP1_CIF_ISP_AFM_MAX_WINDOWS];
};
Members
window
AF measured value of window x
Description
The module measures the sharpness in 3 windows of selectable size via register settings(ISP_AFM_*_A/B/C)
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struct rkisp1_cif_isp_hist_stat¶
statistics histogram data
Definition:
struct rkisp1_cif_isp_hist_stat {
__u32 hist_bins[RKISP1_CIF_ISP_HIST_BIN_N_MAX];
};
Members
hist_bins
measured bin counters. Each bin is a 20 bits unsigned fixed point type. Bits 0-4 are the fractional part and bits 5-19 are the integer part.
Description
The window of the measurements area is divided to 5x5 sub-windows for V10 and to 9x9 sub-windows for V12. The histogram is then computed for each sub-window independently and the final result is a weighted average of the histogram measurements on all sub-windows. The window of the measurements area and the weight of each sub-window are configurable using struct rkisp1_cif_isp_hst_config.
The histogram contains 16 bins in V10 and 32 bins in V12.
The number of entries of hist_bins depends on the hardware revision as is reported by the hw_revision field of the struct media_device_info that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
V10 has RKISP1_CIF_ISP_HIST_BIN_N_MAX_V10 entries, V12 has RKISP1_CIF_ISP_HIST_BIN_N_MAX_V12 entries. RKISP1_CIF_ISP_HIST_BIN_N_MAX is equal to the maximum of the two.
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struct rkisp1_cif_isp_stat¶
Rockchip ISP1 Statistics Data
Definition:
struct rkisp1_cif_isp_stat {
struct rkisp1_cif_isp_awb_stat awb;
struct rkisp1_cif_isp_ae_stat ae;
struct rkisp1_cif_isp_af_stat af;
struct rkisp1_cif_isp_hist_stat hist;
};
Members
awb
statistics data for automatic white balance
ae
statistics data for auto exposure
af
statistics data for auto focus
hist
statistics histogram data
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struct rkisp1_stat_buffer¶
Rockchip ISP1 Statistics Meta Data
Definition:
struct rkisp1_stat_buffer {
__u32 meas_type;
__u32 frame_id;
struct rkisp1_cif_isp_stat params;
};
Members
meas_type
measurement types (RKISP1_CIF_ISP_STAT_* definitions)
frame_id
frame ID for sync
params
statistics data