aclvencGetChannelDescParam

Applicable Products

Product	Supported
Ascend 950PR/Ascend 950DT	x
Atlas A3 training products/Atlas A3 inference products	x
Atlas A2 training products/Atlas A2 inference products	x
Atlas 200I/500 A2 inference products	√
Atlas inference products	√
Atlas training products	x

Function

Obtains the description of a video encoding channel.

Prototype

aclError aclvencGetChannelDescParam(const aclvencChannelDesc *channelDesc, aclvencChannelDescParamType paramType, size_t length, size_t *paramRetSize, void *param)

Parameters

Parameter	Input/Output	Description
channelDesc	Input	Pointer to the description of a video encoding channel. Call aclvencCreateChannelDesc to create data of the aclvencChannelDesc type and call aclvencSetChannelDescParam to set the description of a video encoding channel in advance.
paramType	Input	Attribute data type. For details, see aclvencChannelDescParamType.
length	Input	Attribute value length. If the attribute is of type _UINT64, set this parameter to 8. If the attribute is of type _UINT32, set this parameter to 4. If the attribute is of type *_PTR, set this parameter to 4 for a 32-bit OS or 8 for a 64-bit OS.
paramRetSize	Output	Pointer to the actual attribute value length.
param	Output	Pointer to the attribute value.

Returns

0 on success; else, failure. For details, see aclError.

Parent topic: aclvencChannelDesc