hi_mpi_venc_destroy_chn

Applicability

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product / Atlas A3 inference product	√
Atlas A2 training product / Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	√
Atlas inference product	√
Atlas training product	☓

Function Description

Destroys the created encoding channel when the encoding process exits to free related resources.

Prototype

hi_s32 hi_mpi_venc_destroy_chn(hi_venc_chn chn)

Parameters

Parameter	Input/Output	Description
chn	Input	Encoding channel ID. Atlas 350 Accelerator Card: encoding channel ID. The value range is as follows: [0, 256). The maximum number of JPEGE channels is 256. Atlas A3 training product / Atlas A3 inference product : The value range of the encoding channel ID is [0, 256). The maximum number of JPEGE channels is 256. Atlas A2 training product / Atlas A2 inference product : The value range of the encoding channel ID is [0, 256). The maximum number of JPEGE channels is 256. Atlas 200I/500 A2 inference product : The value range of this parameter is [0, 128). The JPEGE, and VENC functions share the same channels, and the maximum number of channels is 128. For the Atlas inference product , the value range of the encoding channel ID is [0, 256). The JPEGE and VENC functions share channels. The maximum number of channels is 256.

Parameter

Input/Output

Description

chn

Input

Encoding channel ID.

Atlas 350 Accelerator Card: encoding channel ID. The value range is as follows: [0, 256). The maximum number of JPEGE channels is 256.

Atlas A3 training product / Atlas A3 inference product : The value range of the encoding channel ID is [0, 256). The maximum number of JPEGE channels is 256.

Atlas A2 training product / Atlas A2 inference product : The value range of the encoding channel ID is [0, 256). The maximum number of JPEGE channels is 256.

Atlas 200I/500 A2 inference product : The value range of this parameter is [0, 128). The JPEGE, and VENC functions share the same channels, and the maximum number of channels is 128.

For the Atlas inference product , the value range of the encoding channel ID is [0, 256). The JPEGE and VENC functions share channels. The maximum number of channels is 256.

Returns

0: success
Other values: failure. For details, see VENC/JPEGE Return Codes.

Restrictions

Destroying a non-existing channel returns a failure.
Before this API call, ensure that the channel has stopped receiving images. Otherwise, a failure is returned.