ValueList

class ValueList(*args, **kwargs)

A fundamental type that describes an unordered list of Value

Methods

class ValueList

classmethod append_and_take_value(value: Value, append_value: Value) → None

Appends append_value to the GstValueList in value.

Added in version 1.2.

Parameters:

• value – a Value of type GST_TYPE_LIST

• append_value – the value to append

classmethod append_value(value: Value, append_value: Value) → None

Appends append_value to the GstValueList in value.

Parameters:

• value – a Value of type GST_TYPE_LIST

• append_value – the value to append

classmethod concat(value1: Value, value2: Value) → Value

Concatenates copies of value1 and value2 into a list. Values that are not of type GST_TYPE_LIST are treated as if they were lists of length 1. dest will be initialized to the type GST_TYPE_LIST.

Parameters:

• value1 – a Value

• value2 – a Value

classmethod get_size(value: Value) → int

Gets the number of values contained in value.

Parameters:

value – a Value of type GST_TYPE_LIST

classmethod get_value(value: Value, index: int) → Value

Gets the value that is a member of the list contained in value and has the index index.

Parameters:

• value – a Value of type GST_TYPE_LIST

• index – index of value to get from the list

classmethod init(value: Value, prealloc: int) → Value

Initializes and pre-allocates a Value of type GST_TYPE_LIST.

Added in version 1.18.

Parameters:

• value – A zero-filled (uninitialized) Value structure

• prealloc – The number of entries to pre-allocate in the list

classmethod merge(value1: Value, value2: Value) → Value

Merges copies of value1 and value2. Values that are not of type GST_TYPE_LIST are treated as if they were lists of length 1.

The result will be put into dest and will either be a list that will not contain any duplicates, or a non-list type (if value1 and value2 were equal).

Parameters:

• value1 – a Value

• value2 – a Value

classmethod prepend_value(value: Value, prepend_value: Value) → None

Prepends prepend_value to the GstValueList in value.

Parameters:

• value – a Value of type GST_TYPE_LIST

• prepend_value – the value to prepend