hi_mpi_vpc_get_process_result

Applicability

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	☓

Description

Obtains the image processing result after a task is complete.

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

Prototype

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

Parameters

Parameter	Input/Output	Description
chn	Input	Channel ID for image processing. Atlas A3 training products / Atlas A3 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 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256.
task_id	Input	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 image cropping and resizing APIs are called. For details, see hi_mpi_vpc_resize to hi_mpi_vpc_batch_crop_resize_make_border.
milli_sec	Input	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.

Parameter

Input/Output

Description

chn

Input

Channel ID for image processing.

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

task_id

Input

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 image cropping and resizing APIs are called. For details, see hi_mpi_vpc_resize to hi_mpi_vpc_batch_crop_resize_make_border.

milli_sec

Input

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.

Returns

0: success
Other values: failure. For details, see VPC Return Codes.

hi_mpi_vpc_get_process_result

Applicability

Description

Prototype

Parameters

Returns

See Also