Struct gstreamer::DeviceMonitor
source · #[repr(transparent)]pub struct DeviceMonitor { /* private fields */ }
Expand description
Applications should create a DeviceMonitor
when they want
to probe, list and monitor devices of a specific type. The
DeviceMonitor
will create the appropriate
DeviceProvider
objects and manage them. It will then post
messages on its Bus
for devices that have been added and
removed.
The device monitor will monitor all devices matching the filters that the application has set.
The basic use pattern of a device monitor is as follows:
static gboolean
my_bus_func (GstBus * bus, GstMessage * message, gpointer user_data)
{
GstDevice *device;
gchar *name;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_DEVICE_ADDED:
gst_message_parse_device_added (message, &device);
name = gst_device_get_display_name (device);
g_print("Device added: %s\n", name);
g_free (name);
gst_object_unref (device);
break;
case GST_MESSAGE_DEVICE_REMOVED:
gst_message_parse_device_removed (message, &device);
name = gst_device_get_display_name (device);
g_print("Device removed: %s\n", name);
g_free (name);
gst_object_unref (device);
break;
default:
break;
}
return G_SOURCE_CONTINUE;
}
GstDeviceMonitor *
setup_raw_video_source_device_monitor (void) {
GstDeviceMonitor *monitor;
GstBus *bus;
GstCaps *caps;
monitor = gst_device_monitor_new ();
bus = gst_device_monitor_get_bus (monitor);
gst_bus_add_watch (bus, my_bus_func, NULL);
gst_object_unref (bus);
caps = gst_caps_new_empty_simple ("video/x-raw");
gst_device_monitor_add_filter (monitor, "Video/Source", caps);
gst_caps_unref (caps);
gst_device_monitor_start (monitor);
return monitor;
}
Properties
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Readable | Writeable
Object
name
Readable | Writeable | Construct
parent
The parent of the object. Please note, that when changing the ‘parent’
property, we don’t emit notify
and deep-notify
signals due to locking issues. In some cases one can use
element-added
or element-removed
signals on the parent to
achieve a similar effect.
Readable | Writeable
Implements
DeviceMonitorExt
, GstObjectExt
, glib::ObjectExt
, DeviceMonitorExtManual
Implementations§
source§impl DeviceMonitor
impl DeviceMonitor
pub const NONE: Option<&'static DeviceMonitor> = None
sourcepub fn new() -> DeviceMonitor
pub fn new() -> DeviceMonitor
Trait Implementations§
source§impl Clone for DeviceMonitor
impl Clone for DeviceMonitor
source§impl Debug for DeviceMonitor
impl Debug for DeviceMonitor
source§impl Default for DeviceMonitor
impl Default for DeviceMonitor
source§impl HasParamSpec for DeviceMonitor
impl HasParamSpec for DeviceMonitor
type ParamSpec = ParamSpecObject
§type SetValue = DeviceMonitor
type SetValue = DeviceMonitor
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, DeviceMonitor>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for DeviceMonitor
impl Hash for DeviceMonitor
source§impl Ord for DeviceMonitor
impl Ord for DeviceMonitor
source§impl ParentClassIs for DeviceMonitor
impl ParentClassIs for DeviceMonitor
source§impl<OT: ObjectType> PartialEq<OT> for DeviceMonitor
impl<OT: ObjectType> PartialEq<OT> for DeviceMonitor
source§impl<OT: ObjectType> PartialOrd<OT> for DeviceMonitor
impl<OT: ObjectType> PartialOrd<OT> for DeviceMonitor
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl StaticType for DeviceMonitor
impl StaticType for DeviceMonitor
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for DeviceMonitor
impl IsA<Object> for DeviceMonitor
impl Send for DeviceMonitor
impl Sync for DeviceMonitor
Auto Trait Implementations§
impl RefUnwindSafe for DeviceMonitor
impl Unpin for DeviceMonitor
impl UnwindSafe for DeviceMonitor
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