Package org.freedesktop.gstreamer.gst

Class Bin

java.lang.Object

org.javagi.base.ProxyInstance

org.gnome.gobject.TypeInstance

org.gnome.gobject.GObject

org.gnome.gobject.InitiallyUnowned

org.freedesktop.gstreamer.gst.GstObject

org.freedesktop.gstreamer.gst.Element

org.freedesktop.gstreamer.gst.Bin

All Implemented Interfaces:

ChildProxy, Proxy

Direct Known Subclasses:

Pipeline

@Generated("io.github.jwharm.JavaGI")
public class Bin
extends Element
implements ChildProxy

GstBin is an element that can contain other GstElement, allowing them to be managed as a group. Pads from the child elements can be ghosted to the bin, see GstGhostPad. This makes the bin look like any other elements and enables creation of higher-level abstraction elements.

A new GstBin is created with gst_bin_new(). Use a GstPipeline instead if you want to create a toplevel bin because a normal bin doesn't have a bus or handle clock distribution of its own.

After the bin has been created you will typically add elements to it with gst_bin_add(). You can remove elements with gst_bin_remove().

An element can be retrieved from a bin with gst_bin_get_by_name(), using the elements name. gst_bin_get_by_name_recurse_up() is mainly used for internal purposes and will query the parent bins when the element is not found in the current bin.

An iterator of elements in a bin can be retrieved with gst_bin_iterate_elements(). Various other iterators exist to retrieve the elements in a bin.

gst_object_unref() is used to drop your reference to the bin.

The GstBin::element-added signal is fired whenever a new element is added to the bin. Likewise the GstBin::element-removed signal is fired whenever an element is removed from the bin.

A GstBin internally intercepts every GstMessage posted by its children and implements the following default behaviour for each of them:

• MessageType.EOS: This message is only posted by sinks in the PLAYING state. If all sinks posted the EOS message, this bin will post and EOS message upwards.

• MessageType.SEGMENT_START: Just collected and never forwarded upwards. The messages are used to decide when all elements have completed playback of their segment.

• MessageType.SEGMENT_DONE: Is posted by GstBin when all elements that posted a SEGMENT_START have posted a SEGMENT_DONE.

• MessageType.DURATION_CHANGED: Is posted by an element that detected a change in the stream duration. The duration change is posted to the application so that it can refetch the new duration with a duration query.

Note that these messages can be posted before the bin is prerolled, in which case the duration query might fail.

Note also that there might be a discrepancy (due to internal buffering/queueing) between the stream being currently displayed and the returned duration query.

Applications might want to also query for duration (and changes) by listening to the MessageType.STREAM_START message, signaling the active start of a (new) stream.

• MessageType.CLOCK_LOST: This message is posted by an element when it can no longer provide a clock.

The default bin behaviour is to check if the lost clock was the one provided by the bin. If so and the bin is currently in the PLAYING state, the message is forwarded to the bin parent.

This message is also generated when a clock provider is removed from the bin. If this message is received by the application, it should PAUSE the pipeline and set it back to PLAYING to force a new clock distribution.

• MessageType.CLOCK_PROVIDE: This message is generated when an element can provide a clock. This mostly happens when a new clock provider is added to the bin.

The default behaviour of the bin is to mark the currently selected clock as dirty, which will perform a clock recalculation the next time the bin is asked to provide a clock.

This message is never sent to the application but is forwarded to the parent of the bin.

• OTHERS: posted upwards.

A GstBin implements the following default behaviour for answering to a GstQuery:

• QueryType.DURATION: The bin will forward the query to all sink elements contained within and will return the maximum value. If no sinks are available in the bin, the query fails.

• QueryType.POSITION: The query is sent to all sink elements in the bin and the MAXIMUM of all values is returned. If no sinks are available in the bin, the query fails.

• OTHERS: the query is forwarded to all sink elements, the result of the first sink that answers the query successfully is returned. If no sink is in the bin, the query fails.

A GstBin will by default forward any event sent to it to all sink ( EventTypeFlags.UPSTREAM ) or source ( EventTypeFlags.DOWNSTREAM ) elements depending on the event type.

If all the elements return true, the bin will also return true, else false is returned. If no elements of the required type are in the bin, the event handler will return true.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Bin.BinClass	Subclasses can override GstBinClass::add_element and GstBinClass::remove_element to update the list of children in the bin.
static class	Bin.Builder<B extends Bin.Builder<B>>	Inner class implementing a builder pattern to construct a GObject with properties.
static interface	Bin.DeepElementAddedCallback	Functional interface declaration of the DeepElementAddedCallback callback.
static interface	Bin.DeepElementRemovedCallback	Functional interface declaration of the DeepElementRemovedCallback callback.
static interface	Bin.DoLatencyCallback	Functional interface declaration of the DoLatencyCallback callback.
static interface	Bin.ElementAddedCallback	Functional interface declaration of the ElementAddedCallback callback.
static interface	Bin.ElementRemovedCallback	Functional interface declaration of the ElementRemovedCallback callback.

Nested classes/interfaces inherited from class org.freedesktop.gstreamer.gst.Element

Element.Element$Impl, Element.ElementClass, Element.NoMorePadsCallback, Element.PadAddedCallback, Element.PadRemovedCallback

Nested classes/interfaces inherited from class org.freedesktop.gstreamer.gst.GstObject

GstObject.DeepNotifyCallback, GstObject.Object$Impl, GstObject.ObjectClass

Nested classes/interfaces inherited from class org.gnome.gobject.InitiallyUnowned

InitiallyUnowned.InitiallyUnownedClass

Nested classes/interfaces inherited from class org.gnome.gobject.GObject

GObject.NotifyCallback

Nested classes/interfaces inherited from interface org.freedesktop.gstreamer.gst.ChildProxy

ChildProxy.ChildAddedCallback, ChildProxy.ChildProxy$Impl, ChildProxy.ChildProxyInterface, ChildProxy.ChildRemovedCallback

Constructor Summary

Constructors

Constructor	Description
Bin()	Creates a new Bin.
Bin(@Nullable String name)	Creates a new bin with the given name.
Bin(MemorySegment address)	Create a Bin proxy instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
boolean	add(Element element)	Adds the given element to the bin.
protected boolean	addElement(Element element)	Method to add an element to the bin.
void	addMany(Element element1, Object... varargs)	Adds a null-terminated list of elements to a bin.
protected Bin	asParent()	Returns this instance as if it were its parent type.
static Bin.Builder<? extends Bin.Builder>	builder()	A Bin.Builder object constructs a Bin with the specified properties.
protected void	deepElementAdded(Bin subBin, Element child)	Method called when an element was added somewhere in the bin hierarchy.
protected void	deepElementRemoved(Bin subBin, Element child)	Method called when an element was removed somewhere in the bin hierarchy.
protected boolean	doLatency()
protected void	elementAdded(Element child)	Method called when an element was added to the bin.
protected void	elementRemoved(Element child)	Method called when an element was removed from the bin.
void	emitDeepElementAdded(@Nullable Bin subBin, @Nullable Element element)	Emits the "deep-element-added" signal.
void	emitDeepElementRemoved(@Nullable Bin subBin, @Nullable Element element)	Emits the "deep-element-removed" signal.
boolean	emitDoLatency()	Emits the "do-latency" signal.
void	emitElementAdded(@Nullable Element element)	Emits the "element-added" signal.
void	emitElementRemoved(@Nullable Element element)	Emits the "element-removed" signal.
@Nullable Pad	findUnlinkedPad(PadDirection direction)	Recursively looks for elements with an unlinked pad of the given direction within the specified bin and returns an unlinked pad if one is found, or null otherwise.
@Nullable Element	getByInterface(Type iface)	Looks for an element inside the bin that implements the given interface.
@Nullable Element	getByName(String name)	Gets the element with the given name from a bin.
@Nullable Element	getByNameRecurseUp(String name)	Gets the element with the given name from this bin.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
Set<ElementFlags>	getSuppressedFlags()
static @Nullable Type	getType()	Get the GType of the Bin class
protected void	handleMessage(Message message)	Method to handle a message from the children.
@Nullable Iterator	iterateAllByElementFactoryName(String factoryName)	Looks for all elements inside the bin with the given element factory name.
@Nullable Iterator	iterateAllByInterface(Type iface)	Looks for all elements inside the bin that implements the given interface.
@Nullable Iterator	iterateElements()	Gets an iterator for the elements in this bin.
@Nullable Iterator	iterateRecurse()	Gets an iterator for the elements in this bin.
@Nullable Iterator	iterateSinks()	Gets an iterator for all elements in the bin that have the GST_ELEMENT_FLAG_SINK flag set.
@Nullable Iterator	iterateSorted()	Gets an iterator for the elements in this bin in topologically sorted order.
@Nullable Iterator	iterateSources()	Gets an iterator for all elements in the bin that have the GST_ELEMENT_FLAG_SOURCE flag set.
SignalConnection<Bin.DeepElementAddedCallback>	onDeepElementAdded(Bin.DeepElementAddedCallback handler)	Will be emitted after the element was added to subBin.
SignalConnection<Bin.DeepElementRemovedCallback>	onDeepElementRemoved(Bin.DeepElementRemovedCallback handler)	Will be emitted after the element was removed from subBin.
SignalConnection<Bin.DoLatencyCallback>	onDoLatency(Bin.DoLatencyCallback handler)	Will be emitted when the bin needs to perform latency calculations.
SignalConnection<Bin.ElementAddedCallback>	onElementAdded(Bin.ElementAddedCallback handler)	Will be emitted after the element was added to the bin.
SignalConnection<Bin.ElementRemovedCallback>	onElementRemoved(Bin.ElementRemovedCallback handler)	Will be emitted after the element was removed from the bin.
boolean	recalculateLatency()	Queries this Bin for the current latency and reconfigures this latency on all the elements using a LATENCY event.
boolean	remove(Element element)	Removes the element from the bin, unparenting it as well.
protected boolean	removeElement(Element element)	Method to remove an element from the bin.
void	removeMany(Element element1, Object... varargs)	Removes a list of elements from a bin.
void	setSuppressedFlags(Set<ElementFlags> flags)	Suppresses the given flags on the bin.
void	setSuppressedFlags(ElementFlags... flags)	Suppresses the given flags on the bin.
boolean	syncChildrenStates()	Synchronizes the state of every child of this Bin with the state of bin. See also gst_element_sync_state_with_parent().

Methods inherited from class org.freedesktop.gstreamer.gst.Element

abortState, addPad, addPropertyDeepNotifyWatch, addPropertyNotifyWatch, callAsync, changeState, continueState, createAllPads, decorateStreamId, decorateStreamIdPrintf, emitNoMorePads, emitPadAdded, emitPadRemoved, foreachPad, foreachSinkPad, foreachSrcPad, getBaseTime, getBus, getClock, getCompatiblePad, getCompatiblePadTemplate, getContext, getContexts, getContextUnlocked, getCurrentClockTime, getCurrentRunningTime, getFactory, getMetadata, getPadTemplate, getPadTemplateList, getRequestPad, getStartTime, getState, getStaticPad, isLockedState, iteratePads, iterateSinkPads, iterateSrcPads, link, linkFiltered, linkMany, linkPads, linkPadsFiltered, linkPadsFull, linkPadsFull, lostState, makeFromUri, messageFull, messageFull, messageFullWithDetails, messageFullWithDetails, noMorePads, onNoMorePads, onPadAdded, onPadRemoved, padAdded, padRemoved, postMessage, provideClock, query, queryConvert, queryDuration, queryPosition, register, releasePad, releaseRequestPad, removePad, removePropertyNotifyWatch, requestPad, requestPadSimple, seek, seek, seekSimple, seekSimple, sendEvent, setBaseTime, setBus, setClock, setContext, setLockedState, setStartTime, setState, stateChanged, stateChangeReturnGetName, stateGetName, syncStateWithParent, typeSetSkipDocumentation, unlink, unlinkMany, unlinkPads

Methods inherited from class org.freedesktop.gstreamer.gst.GstObject

addControlBinding, checkUniqueness, deepNotify, defaultDeepNotify, defaultError, emitDeepNotify, getControlBinding, getControlRate, getGValueArray, getName, getParent, getPathString, getValue, getValueArray, hasActiveControlBindings, hasAncestor, hasAsAncestor, hasAsParent, onDeepNotify, ref, refSink, removeControlBinding, replace, setControlBindingDisabled, setControlBindingsDisabled, setControlRate, setName, setParent, suggestNextSync, syncValues, unparent, unref

Methods inherited from class org.gnome.gobject.GObject

addToggleRef, addWeakPointer, bindProperty, bindProperty, bindProperty, bindPropertyFull, bindPropertyFull, bindPropertyWithClosures, bindPropertyWithClosures, compatControl, connect, connect, connect, constructed, disconnect, dispatchPropertiesChanged, dispose, dupData, dupQdata, emit, emitNotify, finalize_, forceFloating, freezeNotify, get, getData, getProperty, getProperty, getProperty, getQdata, getv, interfaceFindProperty, interfaceInstallProperty, interfaceListProperties, isFloating, newInstance, newInstance, newv, notify, notify, notifyByPspec, onNotify, refSink, removeToggleRef, removeWeakPointer, replaceData, replaceQdata, runDispose, set, setData, setDataFull, setProperty, setProperty, setProperty, setQdata, setQdataFull, setv, stealData, stealQdata, takeRef, thawNotify, watchClosure, weakRef, weakUnref, withProperties

Methods inherited from class org.gnome.gobject.TypeInstance

callParent, callParent, cast, getPrivate, readGClass, writeGClass

Methods inherited from class org.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.freedesktop.gstreamer.gst.ChildProxy

childAdded, childRemoved, emitChildAdded, emitChildRemoved, get, getChildByIndex, getChildByName, getChildByNameRecurse, getChildrenCount, getProperty, lookup, onChildAdded, onChildRemoved, set, setProperty

Methods inherited from interface org.javagi.base.Proxy

handle

Constructor Details

Bin

public Bin(MemorySegment address)

Create a Bin proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

Bin

public Bin(@Nullable String name)

Creates a new bin with the given name.

Parameters:

name - the name of the new bin

Bin

public Bin()

Creates a new Bin.

Method Details

getType

public static @Nullable Type getType()

Get the GType of the Bin class

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

asParent

protected Bin asParent()

Returns this instance as if it were its parent type. This is mostly synonymous to the Java super keyword, but will set the native typeclass function pointers to the parent type. When overriding a native virtual method in Java, "chaining up" with super.methodName() doesn't work, because it invokes the overridden function pointer again. To chain up, call asParent().methodName(). This will call the native function pointer of this virtual method in the typeclass of the parent type.

Overrides:

asParent in class Element

add

public boolean add(Element element)

Adds the given element to the bin. Sets the element's parent, and thus takes ownership of the element. An element can only be added to one bin.

If the element's pads are linked to other pads, the pads will be unlinked before the element is added to the bin.

When you add an element to an already-running pipeline, you will have to take care to set the state of the newly-added element to the desired state (usually PLAYING or PAUSED, same you set the pipeline to originally) with gst_element_set_state(), or use gst_element_sync_state_with_parent(). The bin or pipeline will not take care of this for you.

Parameters:

element - the GstElement to add

Returns:

true if the element could be added, false if the bin does not want to accept the element.

addMany

public void addMany(Element element1,
 Object... varargs)

Adds a null-terminated list of elements to a bin. This function is equivalent to calling gst_bin_add() for each member of the list. The return value of each gst_bin_add() is ignored.

Parameters:

element1 - the GstElement element to add to the bin

varargs - additional elements to add to the bin

findUnlinkedPad

public @Nullable Pad findUnlinkedPad(PadDirection direction)

Recursively looks for elements with an unlinked pad of the given direction within the specified bin and returns an unlinked pad if one is found, or null otherwise. If a pad is found, the caller owns a reference to it and should use gst_object_unref() on the pad when it is not needed any longer.

Parameters:

direction - whether to look for an unlinked source or sink pad

Returns:

unlinked pad of the given direction.

getByInterface

public @Nullable Element getByInterface(Type iface)

Looks for an element inside the bin that implements the given interface. If such an element is found, it returns the element. You can cast this element to the given interface afterwards. If you want all elements that implement the interface, use gst_bin_iterate_all_by_interface(). This function recurses into child bins.

Parameters:

iface - the GType of an interface

Returns:

A GstElement inside the bin implementing the interface

getByName

public @Nullable Element getByName(String name)

Gets the element with the given name from a bin. This function recurses into child bins.

Parameters:

name - the element name to search for

Returns:

the GstElement with the given name

getByNameRecurseUp

public @Nullable Element getByNameRecurseUp(String name)

Gets the element with the given name from this bin. If the element is not found, a recursion is performed on the parent bin.

Parameters:

name - the element name to search for

Returns:

the GstElement with the given name

getSuppressedFlags

public Set<ElementFlags> getSuppressedFlags()

iterateAllByElementFactoryName

public @Nullable Iterator iterateAllByElementFactoryName(String factoryName)

Looks for all elements inside the bin with the given element factory name. The function recurses inside child bins. The iterator will yield a series of GstElement.

Parameters:

factoryName - the name of the GstElementFactory

Returns:

a GstIterator of GstElement for all elements in the bin with the given element factory name

Since:

1.18

iterateAllByInterface

public @Nullable Iterator iterateAllByInterface(Type iface)

Looks for all elements inside the bin that implements the given interface. You can safely cast all returned elements to the given interface. The function recurses inside child bins. The iterator will yield a series of GstElement.

Parameters:

iface - the GType of an interface

Returns:

a GstIterator of GstElement for all elements in the bin implementing the given interface

iterateElements

public @Nullable Iterator iterateElements()

Gets an iterator for the elements in this bin.

Returns:

a GstIterator of GstElement

iterateRecurse

public @Nullable Iterator iterateRecurse()

Gets an iterator for the elements in this bin. This iterator recurses into GstBin children.

Returns:

a GstIterator of GstElement

iterateSinks

public @Nullable Iterator iterateSinks()

Gets an iterator for all elements in the bin that have the GST_ELEMENT_FLAG_SINK flag set.

Returns:

a GstIterator of GstElement

iterateSorted

public @Nullable Iterator iterateSorted()

Gets an iterator for the elements in this bin in topologically sorted order. This means that the elements are returned from the most downstream elements (sinks) to the sources.

This function is used internally to perform the state changes of the bin elements and for clock selection.

Returns:

a GstIterator of GstElement

iterateSources

public @Nullable Iterator iterateSources()

Gets an iterator for all elements in the bin that have the GST_ELEMENT_FLAG_SOURCE flag set.

Returns:

a GstIterator of GstElement

recalculateLatency

public boolean recalculateLatency()

Queries this Bin for the current latency and reconfigures this latency on all the elements using a LATENCY event.

This method is typically called on the pipeline when a GST_MESSAGE_LATENCY is posted on the bus.

This function simply emits the GstBin::do-latency signal so any custom latency calculations will be performed.

Returns:

true if the latency could be queried and reconfigured.

remove

public boolean remove(Element element)

Removes the element from the bin, unparenting it as well. Unparenting the element means that the element will be dereferenced, so if the bin holds the only reference to the element, the element will be freed in the process of removing it from the bin. If you want the element to still exist after removing, you need to call gst_object_ref() before removing it from the bin.

If the element's pads are linked to other pads, the pads will be unlinked before the element is removed from the bin.

Parameters:

element - the GstElement to remove

Returns:

true if the element could be removed, false if the bin does not want to remove the element.

removeMany

public void removeMany(Element element1,
 Object... varargs)

Removes a list of elements from a bin. This function is equivalent to calling gst_bin_remove() with each member of the list.

Parameters:

element1 - the first GstElement to remove from the bin

varargs - null-terminated list of elements to remove from the bin

setSuppressedFlags

public void setSuppressedFlags(Set<ElementFlags> flags)

Suppresses the given flags on the bin. GstElementFlags of a child element are propagated when it is added to the bin. When suppressed flags are set, those specified flags will not be propagated to the bin.

Parameters:

flags - the GstElementFlags to suppress

Since:

1.10

setSuppressedFlags

public void setSuppressedFlags(ElementFlags... flags)

Suppresses the given flags on the bin. GstElementFlags of a child element are propagated when it is added to the bin. When suppressed flags are set, those specified flags will not be propagated to the bin.

Parameters:

flags - the GstElementFlags to suppress

Since:

1.10

syncChildrenStates

public boolean syncChildrenStates()

Synchronizes the state of every child of this Bin with the state of bin. See also gst_element_sync_state_with_parent().

Returns:

true if syncing the state was successful for all children, otherwise false.

Since:

1.6

addElement

protected boolean addElement(Element element)

Method to add an element to the bin.

Parameters:

element - the element to be added

Returns:

true if the element was added

deepElementAdded

protected void deepElementAdded(Bin subBin,
 Element child)

Method called when an element was added somewhere in the bin hierarchy.

Parameters:

subBin - the GstBin to which the element was added

child - the element that was added

deepElementRemoved

protected void deepElementRemoved(Bin subBin,
 Element child)

Method called when an element was removed somewhere in the bin hierarchy.

Parameters:

subBin - the GstBin from which the element was removed

child - the element that was removed

doLatency

protected boolean doLatency()

elementAdded

protected void elementAdded(Element child)

Method called when an element was added to the bin.

Parameters:

child - the element that was added

elementRemoved

protected void elementRemoved(Element child)

Method called when an element was removed from the bin.

Parameters:

child - the element that was removed

handleMessage

protected void handleMessage(Message message)

Method to handle a message from the children.

Parameters:

message - the message to be handled

removeElement

protected boolean removeElement(Element element)

Method to remove an element from the bin.

Parameters:

element - the element to be removed

Returns:

true if the element was removed

onDeepElementAdded

public SignalConnection<Bin.DeepElementAddedCallback> onDeepElementAdded(Bin.DeepElementAddedCallback handler)

Will be emitted after the element was added to subBin.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

Since:

1.10

See Also:

• Bin.DeepElementAddedCallback.run(org.freedesktop.gstreamer.gst.Bin, org.freedesktop.gstreamer.gst.Element)

emitDeepElementAdded

public void emitDeepElementAdded(@Nullable Bin subBin,
 @Nullable Element element)

Emits the "deep-element-added" signal. See onDeepElementAdded(org.freedesktop.gstreamer.gst.Bin.DeepElementAddedCallback).

onDeepElementRemoved

public SignalConnection<Bin.DeepElementRemovedCallback> onDeepElementRemoved(Bin.DeepElementRemovedCallback handler)

Will be emitted after the element was removed from subBin.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

Since:

1.10

See Also:

• Bin.DeepElementRemovedCallback.run(org.freedesktop.gstreamer.gst.Bin, org.freedesktop.gstreamer.gst.Element)

emitDeepElementRemoved

public void emitDeepElementRemoved(@Nullable Bin subBin,
 @Nullable Element element)

Emits the "deep-element-removed" signal. See onDeepElementRemoved(org.freedesktop.gstreamer.gst.Bin.DeepElementRemovedCallback).

onDoLatency

public SignalConnection<Bin.DoLatencyCallback> onDoLatency(Bin.DoLatencyCallback handler)

Will be emitted when the bin needs to perform latency calculations. This signal is only emitted for toplevel bins or when GstBin:async-handling is enabled.

Only one signal handler is invoked. If no signals are connected, the default handler is invoked, which will query and distribute the lowest possible latency to all sinks.

Connect to this signal if the default latency calculations are not sufficient, like when you need different latencies for different sinks in the same pipeline.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

See Also:

• Bin.DoLatencyCallback.run()

emitDoLatency

public boolean emitDoLatency()

Emits the "do-latency" signal. See onDoLatency(org.freedesktop.gstreamer.gst.Bin.DoLatencyCallback).

onElementAdded

public SignalConnection<Bin.ElementAddedCallback> onElementAdded(Bin.ElementAddedCallback handler)

Will be emitted after the element was added to the bin.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

See Also:

• Bin.ElementAddedCallback.run(org.freedesktop.gstreamer.gst.Element)

emitElementAdded

public void emitElementAdded(@Nullable Element element)

Emits the "element-added" signal. See onElementAdded(org.freedesktop.gstreamer.gst.Bin.ElementAddedCallback).

onElementRemoved

public SignalConnection<Bin.ElementRemovedCallback> onElementRemoved(Bin.ElementRemovedCallback handler)

Will be emitted after the element was removed from the bin.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

See Also:

• Bin.ElementRemovedCallback.run(org.freedesktop.gstreamer.gst.Element)

emitElementRemoved

public void emitElementRemoved(@Nullable Element element)

Emits the "element-removed" signal. See onElementRemoved(org.freedesktop.gstreamer.gst.Bin.ElementRemovedCallback).

builder

public static Bin.Builder<? extends Bin.Builder> builder()

A Bin.Builder object constructs a Bin with the specified properties. Use the various set...() methods to set properties, and finish construction with Bin.Builder.build().

Returns:

the builder object