Function: venc_set_channel_desc_param

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

Sets the description of a video encoding channel.

C Prototype

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

Python Function

ret = acl.media.venc_set_channel_desc_param(venc_channel_desc, param_type, param)

Parameter	Description
venc_channel_desc	Int, pointer address of the description of a video encoding channel.
param_type	Int, attribute parameter type. For details, see aclvencChannelDescParamType.
param	Attribute parameter value. If the type of the attribute parameter is uint64_t or uint32_t, the value is the corresponding parameter value. If the attribute parameter is of the callback function type, the value is a Python function object, which encodes the callback function. Callback function format in Python: def venc_call_back_func(dvpp_pic_desc, dvpp_stream_desc, user_data): pass If the type of the attribute parameter is pointer, the value is the address to which the pointer points.

Parameter

Description

venc_channel_desc

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

param_type

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

param

Attribute parameter value.

If the type of the attribute parameter is uint64_t or uint32_t, the value is the corresponding parameter value.
If the attribute parameter is of the callback function type, the value is a Python function object, which encodes the callback function.
Callback function format in Python:
```
def venc_call_back_func(dvpp_pic_desc, dvpp_stream_desc, user_data):
pass
```
If the type of the attribute parameter is pointer, the value is the address to which the pointer points.

Return Value	Description
ret	Int, error code: 0 on success; else, failure.

Parent topic: VENC