hi_mpi_vo_disable_chn

Product	Supported
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	☓

Disables a specified VO channel.

hi_s32 hi_mpi_vo_disable_chn(hi_vo_layer layer, hi_vo_chn chn)

Parameter	Input/Output	Description
layer	Input	VO layer ID. Value range: [0, 9) Graphics layers and cascade video layers are not supported.
chn	Input	VO channel ID. Value range: [0, 64)

Parameter

Input/Output

Description

layer

Input

VO layer ID.

Value range: [0, 9)

Graphics layers and cascade video layers are not supported.

chn

Input

VO channel ID.

Value range: [0, 64)

A VO channel can be disabled repeatedly, and no failure is returned.
If an HD device channel is bound to the VPSS, you are advised to call this API to disable the channel, and then unbind the VO channel from the VPSS channel. Otherwise, a timeout error HI_ERR_VO_BUSY occurs.
Currently, this API does not support multiple processes.