acl.himpi.vdec_set_chn_param

hi_s32 hi_mpi_vdec_set_chn_param(hi_vdec_chn chn, const hi_vdec_chn_param *chn_param);

ret = acl.himpi.vdec_set_chn_param(chn, chn_param)

Sets the decoding channel parameters.

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_param: dict, dictionary of decoding channel parameters. For details, see hi_vdec_chn_param.

ret: int, error code.

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

• Ensure that a channel has been created. Otherwise, the error code HI_ERR_VDEC_UNEXIST is returned.
• This API can be used to set advanced channel parameters. A created channel has default values for these parameters, as described in hi_vdec_chn_param.
• If the value of a parameter is out of the valid range, the error code HI_ERR_VDEC_ILLEGAL_PARAM is returned. For the value range of each parameter, see the description of hi_vdec_chn_param.
• When creating a channel by calling acl.himpi.vdec_create_chn, set streams to be sent by frame (currently, streams can be sent only by frame). In addition, you can call this API to set the output stream order to the decoding sequence, that is, chn_param["video_param"]["out_order"] = HI_VIDEO_OUT_ORDER_DEC, to implement fast decoding and output. However, this does not support streams containing B frames.