hi_mpi_vo_send_frame

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

The Atlas Training Series Product does not support this API.

Sends video images to a specified output channel for display.

Before calling this API, ensure that the channel is enabled.
The input video data information must comply with the VO data. The configured width and height must be consistent with those of the actual image. They cannot be fewer than 32 pixels and must be 2 pixel-aligned.
In single mode, only one channel can be displayed. Therefore, after the channel priority is set by calling hi_mpi_vo_set_chn_attr, only the channel with the highest priority is displayed.
Currently, this API does not support multiple processes.
Currently, only the single mode is supported. The multi mode is reserved and is not intercepted currently.

hi_s32 hi_mpi_vo_send_frame(hi_vo_layer layer, hi_vo_chn chn, const hi_video_frame_info *frame_info, hi_s32 milli_sec)

Parameter	Input/Output	Description
layer	Input	Video layer ID. Value range: [0, 9) Graphics layers and cascade video layers are not supported.
chn	Input	VO channel ID. Value range: [0, 64)
frame_info	Input	Pointer to video data information. In single mode, the width and height of the image read by the user cannot be greater than those of the target channel.
milli_sec	Input	Timeout parameter. The options are as follows (only 0 is supported now): -1: blocking mode. The program waits until images are obtained. 0: non-blocking mode > 0: timeout interval, in ms. If a timeout occurs, the waiting stops.

Parent topic: VO