hi_mpi_vpss_enable_chn

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

Enables a VPSS channel.

Prototype

hi_s32 hi_mpi_vpss_enable_chn(hi_vpss_grp grp, hi_vpss_chn chn)

Parameters

Parameter	Input/Output	Description
grp	Input	VPSS group ID. The value range is [0, 264). If the 3DNR function is enabled by setting the hi_vpss_grp_attr.nr_en parameter of the hi_mpi_vpss_create_grp API, the value range of the VPSS group ID is [256, 268).
chn	Input	VPSS channel ID. Value range: [0, 2)

Parameter

Input/Output

Description

grp

Input

VPSS group ID.

The value range is [0, 264). If the 3DNR function is enabled by setting the hi_vpss_grp_attr.nr_en parameter of the hi_mpi_vpss_create_grp API, the value range of the VPSS group ID is [256, 268).

chn

Input

VPSS channel ID.

Value range: [0, 2)

Returns

0: success
Other values: failure. For details, see VPSS Return Codes.

Restrictions

You need to call hi_mpi_vpss_set_chn_attr to set channel attributes before calling this API to enable a channel.
The same channel is enabled repeatedly by calling this API, and a success message is returned.
A VPSS group must have been created. For details, see hi_mpi_vpss_create_grp.