hi_mpi_vi_get_pipe_frame

Product	Supported
Ascend 950PR / Ascend 950DT	☓
Atlas A3 training products / Atlas A3 inference products	☓
Atlas A2 training products / Atlas A2 inference products	☓
Atlas 200I/500 A2 inference products	√
Atlas inference products	☓
Atlas training products	☓

Obtains the data of a physical VI pipe.

hi_s32 hi_mpi_vi_get_pipe_frame(hi_vi_pipe vi_pipe, hi_video_frame_info *frame_info, hi_s32 milli_sec)

Parameter	Input/Output	Description
vi_pipe	Input	Physical pipe ID. Value range: [0, 4)
frame_info	Output	Pointer to the VI pipe data.
milli_sec	Input	Timeout parameter. -1: blocking mode 0: non-blocking mode > 0: specific timeout interval, in ms

Parameter

Input/Output

Description

vi_pipe

Input

Physical pipe ID.

Value range: [0, 4)

frame_info

Output

Pointer to the VI pipe data.

milli_sec

Input

Timeout parameter.

This API can be called only after a VI pipe is created by calling hi_mpi_vi_create_pipe.

Call hi_mpi_vi_set_pipe_frame_dump_attr to enable the dump function and set the depth. Otherwise, no temporary buffer space is reserved internally. As a result, no image data can be obtained.
Virtual pipes are not supported.

For the API call sequence, see Video Data Obtaining.

Parent topic: VI