hi_mpi_vo_pause_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	☓

Pauses a specified VO channel.

hi_s32 hi_mpi_vo_pause_chn(hi_vo_layer layer, hi_vo_chn chn)

Parameter	Input/Output	Description
layer	Input	VO 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

VO 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)

This API can be called only after the channel is enabled by calling hi_mpi_vo_enable_chn.
If the partition mode of the video layer is set to HI_VO_PARTITION_MODE_SINGLE by calling hi_mpi_vo_set_video_layer_attr, the specified channel cannot be paused. In this case, the parameters set by calling this API are invalid, but the video display result is not affected.
When video images are sent to a specified output channel for display by calling hi_mpi_vo_send_frame, at least two frames need to be rotated (that is, two hi_video_frame_info structure variables need to be defined). Otherwise, the pause function is invalid.
A channel can be paused repeatedly, and no error code indicating failure is returned.
Currently, this API does not support multiple processes.

Parent topic: VO