hi_mpi_vpss_set_chn_attr

Applicable Products

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	☓

Function

Sets the attributes of a physical VPSS channel.

Prototype

hi_s32 hi_mpi_vpss_set_chn_attr(hi_vpss_grp grp, hi_vpss_chn chn, const hi_vpss_chn_attr *chn_attr)

Parameters

Parameter	Input/Output	Description
grp	Input	VPSS group ID. Value range: [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)
chn_attr	Input	VPSS channel attributes.

Parameter

Input/Output

Description

grp

Input

VPSS group ID.

Value range: [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)

chn_attr

Input

VPSS channel attributes.

Returns

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

Restrictions

A VPSS group must have been created. For details, see hi_mpi_vpss_create_grp.

Reference

For the API call sequence, see Video Data Obtaining and Processing (Camera Scenario) and Video Decoding, Processing, and Display (NVR Scenario).

Parent topic: VPSS Video Processing Functions