hi_mpi_isp_init

Product	Supported
Atlas A3 training products / Atlas A3 inference products	x
Atlas A2 training products / Atlas A2 inference products	x
Atlas 200I/500 A2 inference products	√
Atlas inference products	x
Atlas training products	x

Initializes the ISP firmware.

hi_s32 hi_mpi_isp_init(hi_vi_pipe vi_pipe)

Parameter	Input/Output	Description
vi_pipe	Input	VI pipe ID. Value range: [0, 12)

Parameter

Input/Output

Description

vi_pipe

Input

VI pipe ID.

Value range: [0, 12)

Call hi_mpi_isp_set_pub_attr to set public image attributes before calling this API.
To ensure that resources are completely cleared before the previous process exits, you are advised to call hi_mpi_isp_exit before calling this API to initialize the ISP firmware.
Multiple processes are not supported. This API must be called in the same process as hi_mpi_isp_sensor_reg_callback, hi_mpi_isp_run, hi_mpi_isp_exit, hi_mpi_ae_register, and hi_mpi_awb_register.
This API cannot be called repeatedly.
When the same vi_pipe is used, multiple threads cannot be used for ISP creation or destroying (multiple threads cannot call hi_mpi_isp_sensor_reg_callback, hi_mpi_isp_run, hi_mpi_isp_exit, hi_mpi_ae_register, and hi_mpi_awb_register at the same time).
After the ISP is initialized, it takes one frame for the hardware to read the algorithm coefficient table. Therefore, within one frame after this API is called, hi_mpi_vi_stop_pipe cannot be called to stop the VI pipe.