hi_mpi_vi_get_chn_fd

The Atlas 200/300/500 Inference Product does not support this API.

The Atlas Training Series Product does not support this API.

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.

Parent topic: VI