Function: vdec_get_channel_desc_param

Applicability

Product	Supported (√/x)
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Function Usage

Obtains the description of a video decoding channel.

Prototype

C Prototype

aclError aclvdecGetChannelDescParam(const aclvdecChannelDesc *channelDesc, aclvdecChannelDescParamType paramType, size_t length, size_t *paramRetSize, void *param)

Python Function

paramRetSize, param, ret = acl.media.vdec_get_channel_desc_param(channelDesc, paramType)

Parameter Description

Parameter	Description
channelDesc	Int, pointer address of the description of a video decoding channel. Before calling this API, you must call acl.media.dvpp_create_channel_desc to create data of the aclvdecChannelDesc type and call acl.media.vdec_set_channel_desc_param to set the description attributes of the video encoding channel.
paramType	Int, attribute parameter type. For details, see aclvdecChannelDescParamType.

Parameter

Description

channelDesc

Int, pointer address of the description of a video decoding channel.

Before calling this API, you must call acl.media.dvpp_create_channel_desc to create data of the aclvdecChannelDesc type and call acl.media.vdec_set_channel_desc_param to set the description attributes of the video encoding channel.

paramType

Int, attribute parameter type. For details, see aclvdecChannelDescParamType.

Return Value Description

Return Value	Description
paramRetSize	Int, actual attribute value length.
param	Int, attribute parameter value.
ret	Int, error code: 0 on success; else, failure.

Parent topic: common