hi_stitching_gain_param

Description

Defines the gain compensation parameters.

Prototype

typedef struct {
    hi_stitching_histogram_type hist_type;
    hi_stitching_gain_type gain_type;
    hi_void *user_data;
    hi_s32 (*calulate_gain_callback)(
        hi_void *user_data,
        hi_void *hist_config,
        hi_u32 hist_count,
        void *gain,      
        hi_u32 gain_size);
} hi_stitching_gain_param;

Members

Member	Description
hist_type	Histogram statistics type.
gain_type	Gain compensation type.
user_data	User-defined data.
calulate_gain_callback	Callback function pointer. If gain_type is set to GAIN_LUT, the callback function pointer must be configured. The parameters in the callback function are described as follows: user_data The system assigns the user-defined data (hi_stitching_gain_param.user_data) to user_data in the callback function. hist_config The hist_config parameter in the callback function is internally managed by the system. You can obtain the histogram information by using this parameter after delivering a surround-view stitching task and before releasing the internal surround-view stitching resources. hist_count Indicates the number of hi_stitching_histogram_param structure objects. When hi_stitching_histogram_type is set to OVERLAP_HISTOGRAM, the value of hist_count is fixed at 8. When hi_stitching_histogram_type is set to GLOBAL_HISTOGRAM, the value of hist_count is fixed at 4. gain The gain parameter in the callback function needs to be converted into a hi_vpc_lut_remap structure array. The array length is 4. hi_vpc_lut_remap* lutRemap = (hi_vpc_lut_remap)gain gain_size Length of the hi_vpc_lut_remap* structure array. The current value is 4.

Parent topic: VPC Image Processing