acl.himpi.vdec_get_chn_attr

hi_s32 hi_mpi_vdec_get_chn_attr(hi_vdec_chn chn, hi_vdec_chn_attr *attr);

attr, ret= acl.himpi.vdec_get_chn_attr(chn)

Obtains the attributes of a decoding channel.

The Atlas 200/300/500 Inference Product does not support this API in the current version.

The Atlas Training Series Product does not support this API in the current version.

chn: int, decoding channel ID.

• Atlas Inference Series Product (Ascend 310P Processor): The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256.
• Atlas A2 Training Series Product: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share a maximum of 256 channels. Among them, a maximum of 256 JPEGD decoding channels and 32 VDEC decoding channels are supported.
• Atlas 200/500 A2 Inference Product: The value range of this parameter is [0, 128). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 128.

ret: int, error code.

• 0 indicates success.
• Other values: failure. For details, see VDEC/JPEGD Return Codes.

attr: dict, dictionary of the decoding channel attributes. For details, see hi_vdec_chn_attr.

Ensure that a channel has been created. Otherwise, the error code HI_ERR_VDEC_UNEXIST is returned.