aclvdecGetChannelDescParam

Obtains the description of a video decoding channel.

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

Parameter	Input/Output	Description
channelDesc	Input	Pointer to the description of a video decoding channel. Call aclvdecCreateChannelDesc to create data of the aclvdecChannelDesc type and call aclvdecSetChannelDescParam to set the description of a video decoding channel in advance.
paramType	Input	Attribute data type.
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 32-bit OS or 8 for 64-bit OS.
paramRetSize	Output	Pointer to the actual attribute value length.
param	Output	Pointer to the attribute value.

The value 0 indicates success, and other values indicate failure. For details, see aclError.

Parent topic: aclvdecChannelDesc