CapsFeatures

Object Hierarchy:

Description:

[ CCode ( copy_function = "g_boxed_copy" , free_function = "g_boxed_free" , type_id = "gst_caps_features_get_type ()" ) ]
[ Compact ]
[ Version ( since = "1.2" ) ]
public class CapsFeatures

CapsFeatures can optionally be set on a Caps to add requirements for additional features for a specific Structure.

Caps structures with the same name but with a non-equal set of caps features are not compatible. If a pad supports multiple sets of features it has to add multiple equal structures with different feature sets to the caps.

Empty CapsFeatures are equivalent with the CapsFeatures that only contain CAPS_FEATURE_MEMORY_SYSTEM_MEMORY. ANY CapsFeatures as created by CapsFeatures.any are equal to any other CapsFeatures and can be used to specify that any CapsFeatures would be supported, e.g. for elements that don't touch buffer memory. Caps with ANY CapsFeatures are considered non-fixed and during negotiation some CapsFeatures have to be selected.

Examples for caps features would be the requirement of a specific Memory types or the requirement of having a specific Meta on the buffer. Features are given as a string of the format `memory:GstMemoryTypeName` or `meta:GstMetaAPIName`.

Namespace: Gst

Package: gstreamer-1.0

Content:

Static methods:

public static CapsFeatures? from_string (string features)

Creation methods:

public CapsFeatures (string feature1, ...)
Creates a new CapsFeatures with the given features.
public CapsFeatures.any ()
Creates a new, ANY CapsFeatures.
public CapsFeatures.empty ()
Creates a new, empty CapsFeatures.
public CapsFeatures.id (Quark[] features)
Creates a new CapsFeatures with the given features.
public CapsFeatures.id_valist (Quark feature1, va_list varargs)
Creates a new CapsFeatures with the given features.
public CapsFeatures.single (string feature)
Creates a new CapsFeatures with a single feature.
public CapsFeatures.valist (string feature1, va_list varargs)
Creates a new CapsFeatures with the given features.

Methods:

public void add (string feature)
Adds feature to this.
public void add_id (Quark feature)
Adds feature to this.
public bool contains (string feature)
Checks if this contains feature.
public bool contains_id (Quark feature)
Checks if this contains feature.
public CapsFeatures copy ()
Duplicates a CapsFeatures and all its values.
public void free ()
Frees a CapsFeatures and all its values.
public unowned string? get_nth (uint i)
Returns the i-th feature of this.
public Quark get_nth_id (uint i)
Returns the i-th feature of this.
public uint get_size ()
Returns the number of features in this .
public bool is_any ()
Checks if this is GST_CAPS_FEATURES_ANY.
public bool is_equal (CapsFeatures features2)
Checks if this and features2 are equal.
public void remove (string feature)
Removes feature from this .
public void remove_id (Quark feature)
Removes feature from this .
public bool set_parent_refcount (int refcount)
Sets the parent_refcount field of CapsFeatures .
public string to_string ()
Converts this to a human-readable string representation.