vpc_get_process_result

Applicability

Product	Supported (√/x)
Atlas A3 training products / Atlas A3 inference products	√
Atlas A2 training products / Atlas A2 inference products	√
Atlas training products	x
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Function Usage

Obtains the image processing result after a task is complete.

The VPC functional APIs are asynchronous (for example, vpc_crop). Therefore, it is necessary to call this API to obtain the processing result after the task processing is complete.

Prototype

C Prototype

        
             hi_s32 hi_mpi_vpc_get_process_result(hi_vpc_chn chn, hi_u32 task_id, hi_s32 milli_sec);

Python Function

        
             ret = acl.himpi.vpc_get_process_result(chn, task_id, milli_sec)

Parameter Description

Parameter	Description
chn	Int, channel ID for image processing. Atlas inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256. Atlas A2 training products / Atlas A2 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256. Atlas 200I/500 A2 inference products : The value range of this parameter is [0, 128). The maximum number of channels is 128. Atlas A3 training products / Atlas A3 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256.
task_id	Int, task ID. The task ID is used to determine the task whose result data needs to be obtained. The task ID can be obtained after the crop and resize APIs are called. For details, see acl.himpi.vpc_resize to acl.himpi.vpc_batch_crop_resize_make_border.
milli_sec	Int, timeout interval, in milliseconds. -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.

Parameter

Description

chn

Int, channel ID for image processing.

Atlas inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256.
Atlas A2 training products / Atlas A2 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256.
Atlas 200I/500 A2 inference products : The value range of this parameter is [0, 128). The maximum number of channels is 128.
Atlas A3 training products / Atlas A3 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256.

task_id

Int, task ID.

The task ID is used to determine the task whose result data needs to be obtained.
The task ID can be obtained after the crop and resize APIs are called. For details, see acl.himpi.vpc_resize to acl.himpi.vpc_batch_crop_resize_make_border.

milli_sec

Int, timeout interval, in milliseconds.

-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 Description

Return Value	Description
ret	Int, error code. 0: success. Other values: failures. For details, see VPC Return Codes.

Reference

For the API call sequence, see VPC.

Parent topic: VPC APIs