Trait gstreamer::prelude::DeviceExt[−][src]

pub trait DeviceExt: 'static {
    fn create_element(&self, name: Option<&str>) -> Result<Element, BoolError>;

    fn caps(&self) -> Option<Caps>;

    fn device_class(&self) -> GString;

    fn display_name(&self) -> GString;

    fn properties(&self) -> Option<Structure>;

    fn has_classes(&self, classes: &str) -> bool;

    fn has_classesv(&self, classes: &[&str]) -> bool;

    fn reconfigure_element<P: IsA<Element>>(
        &self, 
        element: &P
    ) -> Result<(), BoolError>;

    fn connect_removed<F: Fn(&Self) + Send + Sync + 'static>(
        &self, 
        f: F
    ) -> SignalHandlerId;
}

Trait containing all Device methods.

Implementors

crate::Device

Required methods

fn create_element(&self, name: Option<&str>) -> Result<Element, BoolError>[src]

Creates the element with all of the required parameters set to use this device.

name

name of new element, or None to automatically create a unique name.

Returns

a new crate::Element configured to use this device

fn caps(&self) -> Option<Caps>[src]

Getter for the crate::Caps that this device supports.

Returns

The crate::Caps supported by this device. Unref with gst_caps_unref() when done.

fn device_class(&self) -> GString[src]

Gets the “class” of a device. This is a “/” separated list of classes that represent this device. They are a subset of the classes of the crate::DeviceProvider that produced this device.

Returns

The device class. Free with g_free() after use.

fn display_name(&self) -> GString[src]

Gets the user-friendly name of the device.

Returns

The device name. Free with g_free() after use.

fn properties(&self) -> Option<Structure>[src]

Gets the extra properties of a device.

Returns

The extra properties or None when there are none. Free with [crate::Structure::free()] after use.

fn has_classes(&self, classes: &str) -> bool[src]

Check if self matches all of the given classes

classes

a “/”-separated list of device classes to match, only match if all classes are matched

Returns

true if self matches.

fn has_classesv(&self, classes: &[&str]) -> bool[src]

Check if factory matches all of the given classes

classes

a None terminated array of classes to match, only match if all classes are matched

Returns

true if self matches.

fn reconfigure_element<P: IsA<Element>>(
    &self,
    element: &P
) -> Result<(), BoolError>[src]

Tries to reconfigure an existing element to use the device. If this function fails, then one must destroy the element and create a new one using Self::create_element().

Note: This should only be implemented for elements can change their device in the PLAYING state.

element

a crate::Element

Returns

true if the element could be reconfigured to use this device, false otherwise.

fn connect_removed<F: Fn(&Self) + Send + Sync + 'static>(
    &self,
    f: F
) -> SignalHandlerId[src]

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Implementors

impl<O: IsA<Device>> DeviceExt for O[src]

fn create_element(&self, name: Option<&str>) -> Result<Element, BoolError>[src]

fn caps(&self) -> Option<Caps>[src]

fn device_class(&self) -> GString[src]

fn display_name(&self) -> GString[src]

fn properties(&self) -> Option<Structure>[src]

fn has_classes(&self, classes: &str) -> bool[src]

fn has_classesv(&self, classes: &[&str]) -> bool[src]

fn reconfigure_element<P: IsA<Element>>(
    &self,
    element: &P
) -> Result<(), BoolError>[src]

fn connect_removed<F: Fn(&Self) + Send + Sync + 'static>(
    &self,
    f: F
) -> SignalHandlerId[src]

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