venc_get_chn_attr

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

Obtains the current attributes of an encoding channel.

C Prototype

hi_s32 hi_mpi_venc_get_chn_attr(hi_venc_chn chn, hi_venc_chn_attr *chn_attr)

Python Function

chn_attr, ret = acl.himpi.venc_get_chn_attr(chn)

Parameter	Description
chn	Int, encoding channel ID. 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. For the Atlas 200I/500 A2 inference product, the value range of the encoding channel ID is [0, 128). The JPEGE and VENC functions share channels. The maximum number of channels is 128.

Parameter

Description

chn

Int, encoding channel ID.

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.
For the Atlas 200I/500 A2 inference product, the value range of the encoding channel ID is [0, 128). The JPEGE and VENC functions share channels. The maximum number of channels is 128.

Return Value	Description
ret	Int, error code. 0 indicates success. Other values indicate failure. For details, see VENC/JPEGE Return Codes.
chn_attr	Dict, encoding channel attributes. For details, see the description of hi_venc_chn_attr.

Description

ret

Int, error code.

chn_attr

Dict, encoding channel attributes. For details, see the description of hi_venc_chn_attr.

This API must be called after an encoding channel is created and before the channel is destroyed.
Only H.264/H.265 encoding channels support this API.

Parent topic: VENC/JPEGE APIs