hi_mpi_vi_get_chn_fd

Applicability

Product	Supported
Atlas 350 Accelerator Card	☓
Atlas A3 training product / Atlas A3 inference product	☓
Atlas A2 training product / Atlas A2 inference product	☓
Atlas 200I/500 A2 inference product	√
Atlas inference product	☓
Atlas training product	☓

Function Description

Obtains the file descriptor of a VI channel.

Prototype

hi_s32 hi_mpi_vi_get_chn_fd(hi_vi_pipe vi_pipe, hi_vi_chn vi_chn)

Parameters

Parameter	Input/Output	Description
vi_pipe	Input	Pipe ID. Value range: [0, 12)
vi_chn	Input	VI channel ID. Value range: [0, 1)

Parameter

Input/Output

Description

vi_pipe

Input

Pipe ID.

Value range: [0, 12)

vi_chn

Input

VI channel ID.

Value range: [0, 1)

Returns

If the value is greater than or equal to 0, the API is successfully called and the corresponding handle is returned. Otherwise, the API fails to be called.

hi_mpi_vi_get_chn_fd

Applicability

Function Description

Prototype

Parameters

Returns

See Also