acl.himpi.vpc_draw_osd

C Prototype	*hi_s32 hi_mpi_vpc_draw_osd(hi_vpc_chn chn, const hi_osd_param osd_param, hi_u32 task_id, hi_s32 milli_sec)*
Python Function	task_id, ret = acl.himpi.vpc_draw_osd(chn, osd_param, task_id, milli_sec)
Function Usage	Draws an on-screen display (OSD) on the input image, which can be used to add a watermark. The Atlas 200/300/500 Inference Product does not support this API. The Atlas Training Series Product does not support this API.
Input Description	chn: int, image processing channel ID. osd_param: dict, OSD information dictionary. For details, see hi_osd_param. milli_sec: int, timeout interval (ms). -1: blocking mode. 0: non-blocking mode. > 0: timeout interval (timeout mode). The timeout interval varies with the operating system. The deviation is generally within a time slice of an operating system. For example, if the time slice of an operating system is 4 ms and the value of milli_sec is set to 1, the actual timeout interval ranges from 1 ms to 5 ms. When the CPU load is high, the timeout interval may fluctuate.
Return Value	ret: int, error code. 0 indicates success. Other values: failure. For details, see VPC Return Codes. task_id: task ID, used to identify a task.

Parent topic: VPC APIs