hi_stiching_ipm_param

Description

Defines the stitching table information.

Prototype

typedef struct {
    hi_u32 src_pic_width;
    hi_u32 src_pic_height;
    hi_u32 dest_pic_width;
    hi_u32 dest_pic_height;
    hi_u32 ipm_table_len;
    hi_stiching_ipm_table *ipm_table_address;
} hi_stiching_ipm_param;

Members

Member	Description
src_pic_width	Width of the input image. The widths of the four input images must be the same.
src_pic_height	Height of the input image. The heights of the four input images must be the same.
dest_pic_width	Width of the output image.
dest_pic_height	Height of the output image.
ipm_table_len	Array size. The value must be dest_pic_width x dest_pic_height.
ipm_table_address	Stitching table address. You need to allocate memory in advance to store the stitching table data. Memory size (in bytes) = sizeof(hi_stiching_ipm_table) x ipm_table_len. The memory size may be large. If a memory allocation API in the C standard library is directly used to allocate memory, the memory will be fragmented and the number of huge pages will be reduced. As a result, the input/output memory of each DVPP function cannot be allocated by calling hi_mpi_dvpp_malloc. Therefore, you are advised to call hi_mpi_dvpp_malloc to allocate memory for storing data of ipm_table_address.

Parent topic: VPC Image Processing