GstDeviceMonitorFactory

GstDeviceMonitorFactory — Create GstDeviceMonitors from a factory

Functions

Types and Values

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstPluginFeature
                ╰── GstDeviceMonitorFactory

Includes

#include <gst/gst.h>

Description

GstDeviceMonitorFactory is used to create instances of device monitors. A GstDeviceMonitorfactory can be added to a GstPlugin as it is also a GstPluginFeature.

Use the gst_device_monitor_factory_find() and gst_device_monitor_factory_create() functions to create device monitor instances or use gst_device_monitor_factory_make() as a convenient shortcut.

Functions

gst_device_monitor_factory_find ()

GstDeviceMonitorFactory *
gst_device_monitor_factory_find (const gchar *name);

Search for an device monitor factory of the given name. Refs the returned device monitor factory; caller is responsible for unreffing.

Parameters

name

name of factory to find

 

Returns

GstDeviceMonitorFactory if found, NULL otherwise.

[transfer full]

Since 1.4


gst_device_monitor_factory_get ()

GstDeviceMonitor *
gst_device_monitor_factory_get (GstDeviceMonitorFactory *factory);

Returns the device monitor of the type defined by the given device monitorfactory.

Parameters

factory

factory to instantiate

 

Returns

the GstDeviceMonitor or NULL if the device monitor couldn't be created.

[transfer full]

Since 1.4


gst_device_monitor_factory_get_by_name ()

GstDeviceMonitor *
gst_device_monitor_factory_get_by_name
                               (const gchar *factoryname);

Returns the device monitor of the type defined by the given device monitor factory.

Parameters

factoryname

a named factory to instantiate

 

Returns

a GstDeviceMonitor or NULL if unable to create device monitor.

[transfer full]

Since 1.4


gst_device_monitor_factory_get_device_monitor_type ()

GType
gst_device_monitor_factory_get_device_monitor_type
                               (GstDeviceMonitorFactory *factory);

Get the GType for device monitors managed by this factory. The type can only be retrieved if the device monitor factory is loaded, which can be assured with gst_plugin_feature_load().

Parameters

factory

factory to get managed GType from

 

Returns

the GType for device monitors managed by this factory or 0 if the factory is not loaded.

Since 1.4


gst_device_monitor_factory_get_metadata ()

const gchar *
gst_device_monitor_factory_get_metadata
                               (GstDeviceMonitorFactory *factory,
                                const gchar *key);

Get the metadata on factory with key .

Parameters

factory

a GstDeviceMonitorFactory

 

key

a key

 

Returns

the metadata with key on factory or NULL when there was no metadata with the given key .

Since 1.4


gst_device_monitor_factory_get_metadata_keys ()

gchar **
gst_device_monitor_factory_get_metadata_keys
                               (GstDeviceMonitorFactory *factory);

Get the available keys for the metadata on factory .

Parameters

Returns

a NULL-terminated array of key strings, or NULL when there is no metadata. Free with g_strfreev() when no longer needed.

[transfer full][element-type utf8][array zero-terminated=1]

Since 1.4


gst_device_monitor_factory_has_classes ()

gboolean
gst_device_monitor_factory_has_classes
                               (GstDeviceMonitorFactory *factory,
                                const gchar *classes);

Check if factory matches all of the given classes

Parameters

factory

a GstDeviceMonitorFactory

 

classes

a "/" separate list of klasses to match, only match if all classes are matched

 

Returns

TRUE if factory matches.

Since 1.4


gst_device_monitor_factory_has_classesv ()

gboolean
gst_device_monitor_factory_has_classesv
                               (GstDeviceMonitorFactory *factory,
                                gchar **classes);

Check if factory matches all of the given classes

Parameters

factory

a GstDeviceMonitorFactory

 

classes

a NULL terminated array of klasses to match, only match if all classes are matched.

[array zero-terminated=1]

Returns

TRUE if factory matches.

Since 1.4


gst_device_monitor_factory_list_get_device_monitors ()

GList *
gst_device_monitor_factory_list_get_device_monitors
                               (const gchar *classes,
                                GstRank minrank);

Get a list of factories that match all of the given classes . Only device monitors with a rank greater or equal to minrank will be returned. The list of factories is returned by decreasing rank.

Parameters

classes

a "/" separate list of klasses to match, only match if all classes are matched

 

minrank

Minimum rank

 

Returns

a GList of GstDeviceMonitorFactory device monitors. Use gst_plugin_feature_list_free() after usage.

[transfer full][element-type Gst.DeviceMonitorFactory]

Since 1.4

Types and Values

GstDeviceMonitorFactory

typedef struct _GstDeviceMonitorFactory GstDeviceMonitorFactory;

The opaque GstDeviceMonitorFactory data structure.

Since 1.4


GstDeviceMonitorFactoryClass

typedef struct _GstDeviceMonitorFactoryClass GstDeviceMonitorFactoryClass;

The opaque GstDeviceMonitorFactoryClass data structure.

Since 1.4

See Also

GstDeviceMonitor, GstPlugin, GstPluginFeature, GstPadTemplate.