hi_mpi_vo_show_chn

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

The Atlas Training Series Product does not support this API.

Displays a specified channel.

Before calling this API, ensure that the VO channel and the video layer where the VO channel is located are enabled.
By default, a channel is in the display state.
The VO module does not support the display of a specified channel in single mode. The interface parameter configuration is invalid, but the display result is not affected.
After a channel is enabled, you must correctly destroy all the requested channel resources and VB-related buffer resources when exiting the program. Otherwise, the operation is undefined and subsequent display cannot be ensured.
Currently, this API does not support multiple processes.

hi_s32 hi_mpi_vo_show_chn(hi_vo_layer layer, hi_vo_chn chn)

Parameter	Input/Output	Description
layer	Input	Video layer ID. Value range: [0, 9) This parameter is valid only when layer is set to 0 or 1.
chn	Input	VO channel ID. Value range: [0, 64)

Parameter

Input/Output

Description

layer

Input

Video layer ID.

Value range: [0, 9)

This parameter is valid only when layer is set to 0 or 1.

chn

Input

VO channel ID.

Value range: [0, 64)

Parent topic: VO