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Gst.Element
parent-child marker Gst.Object
GObject.Object
Gst.Bin
Gst.Pipeline

Class Gst.Pipeline

Import line:	Gst = imports.gi.Gst;
GIR File:	Gst-0.10.gir
C documentation:	GstPipeline
Class :	Pipeline
Implements:	Gst.ChildProxy
Extends:	Gst.Bin
	Show / Hide Inherited methods, properties and signals

The GstPipeline structure.

Properties
Properties		Defined By
	_gst_reserved : Array read only	Gst.Pipeline
	async_handling : Boolean	Gst.Bin
	auto_flush_bus : Boolean Whether or not to automatically flush all messages on the pipeline's bus when going from READY to NULL state. Whether or not to automatically flush all messages on the pipeline's bus when going from READY to NULL state. Please see gst_pipeline_set_auto_flush_bus() for more information on this option.	Gst.Pipeline
	base_time : Number read only	Gst.Element
	bin : Gst.Bin read only	Gst.Pipeline
	bus : Gst.Bus read only	Gst.Element
	child_bus : Gst.Bus read only	Gst.Bin
	children : Array read only	Gst.Bin
	children_cookie : Number read only	Gst.Bin
	clock : Gst.Clock read only	Gst.Element
	clock_dirty : Boolean read only	Gst.Bin
	clock_provider : Gst.Element read only	Gst.Bin
	current_state : Gst.State read only	Gst.Element
	delay : Number	Gst.Pipeline
	delay : Number read only	Gst.Pipeline
	element : Gst.Element read only	Gst.Bin
	fixed_clock : Gst.Clock read only	Gst.Pipeline
	flags : Number read only	Gst.Object
	last_return : Gst.StateChangeReturn read only	Gst.Element
	lock : GLib.Mutex read only	Gst.Object
	messages : Array read only	Gst.Bin
	name : String	Gst.Object
	name_prefix : String read only	Gst.Object
	next_state : Gst.State read only	Gst.Element
	numchildren : Number read only	Gst.Bin
	numpads : Number read only	Gst.Element
	numsinkpads : Number read only	Gst.Element
	numsrcpads : Number read only	Gst.Element
	object : Gst.Object read only	Gst.Element
	pads : Array read only	Gst.Element
	pads_cookie : Number read only	Gst.Element
	parent : Gst.Object read only	Gst.Object
	pending_state : Gst.State read only	Gst.Element
	polling : Boolean read only	Gst.Bin
	priv : Gst.PipelinePrivate read only	Gst.Pipeline
	provided_clock : Gst.Clock read only	Gst.Bin
	refcount : Number read only	Gst.Object
	sinkpads : Array read only	Gst.Element
	srcpads : Array read only	Gst.Element
	state_cond : GLib.Cond read only	Gst.Element
	state_cookie : Number read only	Gst.Element
	state_dirty : Boolean read only	Gst.Bin
	state_lock : GLib.StaticRecMutex read only	Gst.Element
	stream_time : Number read only	Gst.Pipeline

Methods / Constructors
Method / Constructor		Defined By
	new Gst.Pipeline (Object *properties) Create a new Gst.Pipeline Create a new Gst.Pipeline Parameters: Object properties*
	new Gst.Pipeline.c_new (String *name) : Gst.Pipeline Create a new Gst.Pipeline Create a new Gst.Pipeline Parameters: String name* Required (not null) Returns: Gst.Pipeline
	abort_state () : none Abort the state change of the element. Abort the state change of the element. This function is used by elements that do asynchronous state changes and find out something is wrong. This function should be called with the STATE_LOCK held. MT safe. Returns: none	Gst.Element
	add (Element *element) : Boolean Adds the given element to the bin. 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. MT safe. the bin does not want to accept the element. Parameters: Gst.Element element* Required (not null) Returns: Boolean	Gst.Bin
	add_pad (Pad *pad) : Boolean Adds a pad (link point) to element. Adds a pad (link point) to element. pad's parent will be set to element; see gst_object_set_parent() for refcounting information. Pads are not automatically activated so elements should perform the needed steps to activate the pad in case this pad is added in the PAUSED or PLAYING state. See gst_pad_set_active() for more information about activating pads. The pad and the element should be unlocked when calling this function. This function will emit the GstElement::pad-added signal on the element. a pad with the same name already existed or the pad already had another parent. MT safe. Parameters: Gst.Pad pad* Required (not null) Returns: Boolean	Gst.Element
	auto_clock () : none Let pipeline select a clock automatically. Let pipeline select a clock automatically. This is the default behaviour. Use this function if you previous forced a fixed clock with gst_pipeline_use_clock() and want to restore the default pipeline clock selection algorithm. MT safe. Returns: none	Gst.Pipeline
	change_state (StateChange *transition) : Gst.StateChangeReturn Perform transition* on element. Perform transition on element. This function must be called with STATE_LOCK held and is mainly used internally. Parameters: Gst.StateChange transition Required (not null) Returns: Gst.StateChangeReturn	Gst.Element
	continue_state (StateChangeReturn *ret) : Gst.StateChangeReturn Commit the state change of the element and proceed to the next pending state if any. Commit the state change of the element and proceed to the next pending state if any. This function is used by elements that do asynchronous state changes. The core will normally call this method automatically when an element returned GST_STATE_CHANGE_SUCCESS* from the state change function. If after calling this method the element still has not reached the pending state, the next state change is performed. This method is used internally and should normally not be called by plugins or applications. MT safe. Parameters: Gst.StateChangeReturn ret Required (not null) Returns: Gst.StateChangeReturn	Gst.Element
	create_all_pads () : none Creates a pad for each pad template that is always available. Creates a pad for each pad template that is always available. This function is only useful during object intialization of subclasses of GstElement. Returns: none	Gst.Element
	default_error (Object *error, String debug) : none A default error function. A default error function. The default handler will simply print the error string using g_print. Parameters: Object error* Required (not null) String debug Required (not null) Returns: none	Gst.Object
	find_unconnected_pad (PadDirection *direction) : Gst.Pad 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. 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: Gst.PadDirection direction* Required (not null) Returns: Gst.Pad	Gst.Bin
	find_unlinked_pad (PadDirection *direction) : Gst.Pad 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. 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: Gst.PadDirection direction* Required (not null) Returns: Gst.Pad	Gst.Bin
	found_tags (TagList *list) : none Posts a message to the bus that new tags were found, and pushes an event to all sourcepads. Posts a message to the bus that new tags were found, and pushes an event to all sourcepads. Takes ownership of the list. This is a utility method for elements. Applications should use the GstTagSetter* interface. Parameters: Gst.TagList list Required (not null) Returns: none	Gst.Element
	found_tags_for_pad (Pad *pad, TagList list) : none Posts a message to the bus that new tags were found and pushes the tags as event. Posts a message to the bus that new tags were found and pushes the tags as event. Takes ownership of the list. This is a utility method for elements. Applications should use the GstTagSetter* interface. Parameters: Gst.Pad pad Required (not null) Gst.TagList list Required (not null) Returns: none	Gst.Element
	get_auto_flush_bus () : Boolean Check if pipeline will automatically flush messages when going to the NULL state. Check if pipeline will automatically flush messages when going to the NULL state. going from READY to NULL state or not. MT safe. Returns: Boolean	Gst.Pipeline
	get_base_time () : Number Returns the base time of the element. Returns the base time of the element. The base time is the absolute time of the clock when this element was last put to PLAYING. Subtracting the base time from the clock time gives the running time of the element. MT safe. Returns: Number	Gst.Element
	get_bus () : Gst.Bus Gets the GstBus of pipeline. Gets the GstBus of pipeline. The bus allows applications to receive GstMessage packets. MT safe. Returns: Gst.Bus	Gst.Pipeline
	get_by_interface (Number *iface) : Gst.Element Looks for an element inside the bin that implements the given interface. 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. MT safe. Caller owns returned reference. Parameters: Number iface* Required (not null) Returns: Gst.Element	Gst.Bin
	get_by_name (String *name) : Gst.Element Gets the element with the given name from a bin. Gets the element with the given name from a bin. This function recurses into child bins. Returns NULL if no element with the given name is found in the bin. MT safe. Caller owns returned reference. Parameters: String name* Required (not null) Returns: Gst.Element	Gst.Bin
	get_by_name_recurse_up (String *name) : Gst.Element Gets the element with the given name from this bin. Gets the element with the given name from this bin. If the element is not found, a recursion is performed on the parent bin. Returns NULL if: - no element with the given name is found in the bin MT safe. Caller owns returned reference. Parameters: String name* Required (not null) Returns: Gst.Element	Gst.Bin
	get_child_by_index (Number *index) : Gst.Object Fetches a child by its number. Fetches a child by its number. after usage. MT safe. Parameters: Number index* Required (not null) Returns: Gst.Object Unref	Gst.ChildProxy
	get_child_by_name (String *name) : Gst.Object Looks up a child element by the given name. Looks up a child element by the given name. Implementors can use GstObject* together with gst_object_get_name() MT safe. Parameters: String name Required (not null) Returns: Gst.Object	Gst.ChildProxy
	get_children_count () : Number Gets the number of child objects this parent contains. Gets the number of child objects this parent contains. MT safe. Returns: Number	Gst.ChildProxy
	get_clock () : Gst.Clock Gets the current clock used by pipeline. Gets the current clock used by pipeline. Returns: Gst.Clock	Gst.Pipeline
	get_compatible_pad (Pad *pad, Caps caps) : Gst.Pad Looks for an unlinked pad to which the given pad can link. Looks for an unlinked pad to which the given pad can link. It is not guaranteed that linking the pads will work, though it should work in most cases. found. gst_object_unref() after usage. Parameters: Gst.Pad pad* Required (not null) Gst.Caps caps Required (not null) Returns: Gst.Pad	Gst.Element
	get_compatible_pad_template (PadTemplate *compattempl) : Gst.PadTemplate Retrieves a pad template from element* that is compatible with compattempl. Retrieves a pad template from element that is compatible with compattempl. Pads from compatible templates can be linked together. unreferencing is necessary. Parameters: Gst.PadTemplate compattempl Required (not null) Returns: Gst.PadTemplate	Gst.Element
	get_delay () : Number Get the configured delay (see gst_pipeline_set_delay()). Get the configured delay (see gst_pipeline_set_delay()). MT safe. Returns: Number	Gst.Pipeline
	get_factory () : Gst.ElementFactory Retrieves the factory that was used to create this element. Retrieves the factory that was used to create this element. no refcounting is needed. Returns: Gst.ElementFactory	Gst.Element
	get_index () : Gst.Index Gets the index from the element. Gets the index from the element. element. unref after usage. MT safe. Returns: Gst.Index	Gst.Element
	get_last_stream_time () : Number Gets the last running time of pipeline. Gets the last running time of pipeline. If the pipeline is PLAYING, the returned time is the running time used to configure the element's base time in the PAUSED->PLAYING state. If the pipeline is PAUSED, the returned time is the running time when the pipeline was paused. This function returns GST_CLOCK_TIME_NONE if the pipeline was configured to not handle the management of the element's base time (see gst_pipeline_set_new_stream_time()). MT safe. gst_element_get_start_time(). Returns: Number	Gst.Pipeline
	get_name () : String Returns a copy of the name of object. Returns a copy of the name of object. Caller should g_free() the return value after usage. For a nameless object, this returns NULL, which you can safely g_free() as well. MT safe. This function grabs and releases object's LOCK. Returns: String after usage.	Gst.Object
	get_name_prefix () : String Returns a copy of the name prefix of object. Returns a copy of the name prefix of object. Caller should g_free() the return value after usage. For a prefixless object, this returns NULL, which you can safely g_free() as well. MT safe. This function grabs and releases object's LOCK. Returns: String after usage.	Gst.Object
	get_pad (String *name) : Gst.Pad Retrieves a pad from element* by name. Retrieves a pad from element by name. Tries gst_element_get_static_pad() first, then gst_element_get_request_pad(). to the result pad should be released with gst_object_unref() in case of a static pad or gst_element_release_request_pad() in case of a request pad. Use gst_element_get_static_pad() or gst_element_get_request_pad() instead. depending on the type of the pad. Parameters: String name Required (not null) Returns: Gst.Pad	Gst.Element
	get_parent () : Gst.Object Returns the parent of object. Returns the parent of object. This function increases the refcount of the parent object so you should gst_object_unref() it after usage. MT safe. Grabs and releases object's LOCK. Returns: Gst.Object parent. unref after usage.	Gst.Object
	get_path_string () : String Generates a string describing the path of object in the object hierarchy. Generates a string describing the path of object in the object hierarchy. Only useful (or used) for debugging. MT safe. Grabs and releases the GstObject's LOCK for all objects in the hierarchy. Returns: String g_free() the string after usage.	Gst.Object
	get_query_types () : Gst.QueryType Get an array of query types from the element. Get an array of query types from the element. If the element doesn't implement a query types function, the query will be forwarded to the peer of a random linked sink pad. be freed or modified. MT safe. Returns: Gst.QueryType	Gst.Element
	get_request_pad (String *name) : Gst.Pad Retrieves a pad from the element by name. Retrieves a pad from the element by name. This version only retrieves request pads. The pad should be released with gst_element_release_request_pad(). Parameters: String name* Required (not null) Returns: Gst.Pad	Gst.Element
	get_start_time () : Number Returns the start time of the element. Returns the start time of the element. The start time is the running time of the clock when this element was last put to PAUSED. Usually the start_time is managed by a toplevel element such as GstPipeline. MT safe. Returns: Number	Gst.Element
	get_state (Object *out_values, State pending, Number timeout) : Gst.StateChangeReturn Gets the state of the element. Gets the state of the element. For elements that performed an ASYNC state change, as reported by gst_element_set_state(), this function will block up to the specified timeout value for the state change to complete. If the element completes the state change or goes into an error, this function returns immediately with a return value of GST_STATE_CHANGE_SUCCESS* or GST_STATE_CHANGE_FAILURE respectively. For elements that did not return GST_STATE_CHANGE_ASYNC, this function returns the current and pending state immediately. This function returns GST_STATE_CHANGE_NO_PREROLL if the element successfully changed its state but is not able to provide data yet. This mostly happens for live sources that only produce data in GST_STATE_PLAYING. While the state change return is equivalent to GST_STATE_CHANGE_SUCCESS, it is returned to the application to signal that some sink elements might not be able to complete their state change because an element is not producing data to complete the preroll. When setting the element to playing, the preroll will complete and playback will start. MT safe. Parameters: Object out_values Gst.State state Gst.State pending a pointer to GstState to hold the pending state. Can be NULL. Gst.State pending Required (not null) a pointer to GstState to hold the pending state. Can be NULL. Number timeout Required (not null) state change or GST_CLOCK_TIME_NONE for infinite timeout. Returns: Gst.StateChangeReturn and the last state change succeeded, GST_STATE_CHANGE_ASYNC if the element is still performing a state change or GST_STATE_CHANGE_FAILURE if the last state change failed.	Gst.Element
	get_static_pad (String *name) : Gst.Pad Retrieves a pad from element* by name. Retrieves a pad from element by name. This version only retrieves already-existing (i.e. 'static') pads. usage. MT safe. Parameters: String name Required (not null) Returns: Gst.Pad	Gst.Element
	has_ancestor (Object *ancestor) : Boolean Check if object* has an ancestor ancestor somewhere up in the hierarchy. Check if object has an ancestor ancestor somewhere up in the hierarchy. MT safe. Grabs and releases object's locks. Parameters: Gst.Object ancestor Required (not null) Returns: Boolean	Gst.Object
	implements_interface (Number *iface_type) : Boolean Test whether the given element implements a certain interface of type iface_type, and test whether it is supported for this specific instance. Test whether the given element implements a certain interface of type iface_type, and test whether it is supported for this specific instance. Parameters: Number iface_type* Required (not null) type of the interface which we want to be implemented Returns: Boolean	Gst.Element
	is_indexable () : Boolean Queries if the element can be indexed. Queries if the element can be indexed. MT safe. Returns: Boolean	Gst.Element
	is_locked_state () : Boolean Checks if the state of an element is locked. Checks if the state of an element is locked. If the state of an element is locked, state changes of the parent don't affect the element. This way you can leave currently unused elements inside bins. Just lock their state before changing the state from GST_STATE_NULL. MT safe. Returns: Boolean	Gst.Element
	iterate_all_by_interface (Number *iface) : Gst.Iterator Looks for all elements inside the bin that implements the given interface. 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* that should be unreffed after use. Each element yielded by the iterator will have its refcount increased, so unref after use. MT safe. Caller owns returned value. Parameters: Number iface Required (not null) Returns: Gst.Iterator implementing the given interface, or NULL	Gst.Bin
	iterate_elements () : Gst.Iterator Gets an iterator for the elements in this bin. Gets an iterator for the elements in this bin. Each element yielded by the iterator will have its refcount increased, so unref after use. MT safe. Caller owns returned value. Returns: Gst.Iterator	Gst.Bin
	iterate_pads () : Gst.Iterator Retrieves an iterattor of element's pads. Retrieves an iterattor of element's pads. The iterator should be freed after usage. MT safe. Returns: Gst.Iterator	Gst.Element
	iterate_recurse () : Gst.Iterator Gets an iterator for the elements in this bin. Gets an iterator for the elements in this bin. This iterator recurses into GstBin children. Each element yielded by the iterator will have its refcount increased, so unref after use. MT safe. Caller owns returned value. Returns: Gst.Iterator	Gst.Bin
	iterate_sink_pads () : Gst.Iterator Retrieves an iterator of element's sink pads. Retrieves an iterator of element's sink pads. MT safe. Returns: Gst.Iterator	Gst.Element
	iterate_sinks () : Gst.Iterator Gets an iterator for all elements in the bin that have the GST_ELEMENT_IS_SINK flag set. Gets an iterator for all elements in the bin that have the GST_ELEMENT_IS_SINK flag set. Each element yielded by the iterator will have its refcount increased, so unref after use. MT safe. Caller owns returned value. Returns: Gst.Iterator	Gst.Bin
	iterate_sorted () : Gst.Iterator Gets an iterator for the elements in this bin in topologically sorted order. 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. Each element yielded by the iterator will have its refcount increased, so unref after use. MT safe. Caller owns returned value. Returns: Gst.Iterator	Gst.Bin
	iterate_sources () : Gst.Iterator Gets an iterator for all elements in the bin that have no sinkpads and have the GST_ELEMENT_IS_SINK flag unset. Gets an iterator for all elements in the bin that have no sinkpads and have the GST_ELEMENT_IS_SINK flag unset. Each element yielded by the iterator will have its refcount increased, so unref after use. MT safe. Caller owns returned value. Returns: Gst.Iterator	Gst.Bin
	iterate_src_pads () : Gst.Iterator Retrieves an iterator of element's source pads. Retrieves an iterator of element's source pads. MT safe. Returns: Gst.Iterator	Gst.Element
	link (Element *dest) : Boolean Links src* to dest. Links src to dest. The link must be from source to destination; the other direction will not be tried. The function looks for existing pads that aren't linked yet. It will request new pads if necessary. Such pads need to be released manualy when unlinking. If multiple links are possible, only one is established. Make sure you have added your elements to a bin or pipeline with gst_bin_add() before trying to link them. Parameters: Gst.Element dest Required (not null) Returns: Boolean	Gst.Element
	link_filtered (Element *dest, Caps filter) : Boolean Links src* to dest using the given caps as filtercaps. Links src to dest using the given caps as filtercaps. The link must be from source to destination; the other direction will not be tried. The function looks for existing pads that aren't linked yet. It will request new pads if necessary. If multiple links are possible, only one is established. Make sure you have added your elements to a bin or pipeline with gst_bin_add() before trying to link them. Parameters: Gst.Element dest Required (not null) Gst.Caps filter Required (not null) Returns: Boolean	Gst.Element
	link_pads (String *srcpadname, Element dest, String destpadname) : Boolean or NULL for any pad. or NULL for any pad. Links the two named pads of the source and destination elements. Side effect is that if one of the pads has no parent, it becomes a child of the parent of the other element. If they have different parents, the link fails. Parameters: String srcpadname* Required (not null) Gst.Element dest Required (not null) String destpadname Required (not null) Returns: Boolean	Gst.Element
	link_pads_filtered (String *srcpadname, Element dest, String destpadname, Caps filter) : Boolean Links the two named pads of the source and destination elements. Links the two named pads of the source and destination elements. Side effect is that if one of the pads has no parent, it becomes a child of the parent of the other element. If they have different parents, the link fails. If caps* is not NULL, makes sure that the caps of the link is a subset of caps. Parameters: String srcpadname Required (not null) Gst.Element dest Required (not null) String destpadname Required (not null) Gst.Caps filter Required (not null) Returns: Boolean	Gst.Element
	lost_state () : none Brings the element to the lost state. Brings the element to the lost state. This function calls gst_element_lost_state_full() with the new_base_time set to TRUE. This function is used internally and should normally not be called from plugins or applications. MT safe. Returns: none	Gst.Element
	lost_state_full (Boolean *new_base_time) : none Brings the element to the lost state. Brings the element to the lost state. The current state of the element is copied to the pending state so that any call to gst_element_get_state() will return GST_STATE_CHANGE_ASYNC. An ASYNC_START message is posted with indication to distribute a new base_time to the element when new_base_time* is TRUE. If the element was PLAYING, it will go to PAUSED. The element will be restored to its PLAYING state by the parent pipeline when it prerolls again. This is mostly used for elements that lost their preroll buffer in the GST_STATE_PAUSED or GST_STATE_PLAYING state after a flush, they will go to their pending state again when a new preroll buffer is queued. This function can only be called when the element is currently not in error or an async state change. This function is used internally and should normally not be called from plugins or applications. MT safe. Parameters: Boolean new_base_time Required (not null) Returns: none	Gst.Element
	message_full (MessageType *type, Number domain, Number code, String text, String debug, String file, String function, Number line) : none Post an error, warning or info message on the bus from inside an element. Post an error, warning or info message on the bus from inside an element. GST_MESSAGE_INFO. MT safe. Parameters: Gst.MessageType type* Required (not null) Number domain Required (not null) Number code Required (not null) String text Required (not null) default message connected to code, or NULL String debug Required (not null) default debugging information, or NULL String file Required (not null) String function Required (not null) Number line Required (not null) Returns: none	Gst.Element
	no_more_pads () : none Use this function to signal that the element does not expect any more pads to show up in the current pipeline. Use this function to signal that the element does not expect any more pads to show up in the current pipeline. This function should be called whenever pads have been added by the element itself. Elements with GST_PAD_SOMETIMES pad templates use this in combination with autopluggers to figure out that the element is done initializing its pads. This function emits the GstElement::no-more-pads signal. MT safe. Returns: none	Gst.Element
	post_message (Message *message) : Boolean Post a message on the element's GstBus. Post a message on the element's GstBus. This function takes ownership of the message; if you want to access the message after this call, you should add an additional reference before calling. FALSE* if the element did not have a bus. MT safe. Parameters: Gst.Message message Required (not null) Returns: Boolean	Gst.Element
	provide_clock () : Gst.Clock Get the clock provided by the given element. Get the clock provided by the given element. An element is only required to provide a clock in the PAUSED state. Some elements can provide a clock in other states. if no clock could be provided. Unref after usage. MT safe. Returns: Gst.Clock	Gst.Element
	provides_clock () : Boolean Query if the element provides a clock. Query if the element provides a clock. A GstClock provided by an element can be used as the global GstClock for the pipeline. An element that can provide a clock is only required to do so in the PAUSED state, this means when it is fully negotiated and has allocated the resources to operate the clock. MT safe. Returns: Boolean	Gst.Element
	query (Query *query) : Boolean Performs a query on the given element. Performs a query on the given element. For elements that don't implement a query handler, this function forwards the query to a random srcpad or to the peer of a random linked sinkpad of this element. MT safe. Parameters: Gst.Query query* Required (not null) Returns: Boolean	Gst.Element
	query_convert (Format *src_format, Number src_val, Format dest_format, Object out_values) : Boolean Queries an element to convert src_val* in src_format to dest_format. Queries an element to convert src_val in src_format to dest_format. Parameters: Gst.Format src_format Required (not null) Number src_val Required (not null) Gst.Format dest_format Required (not null) Object out_values Number dest_val Returns: Boolean	Gst.Element
	query_duration (Format *format, Object out_values) : Boolean Queries an element for the total stream duration. Queries an element for the total stream duration. Parameters: Gst.Format format* Required (not null) a pointer to the GstFormat asked for. On return contains the GstFormat used. Object out_values Number duration Returns: Boolean	Gst.Element
	query_position (Format *format, Object out_values) : Boolean Queries an element for the stream position. Queries an element for the stream position. Parameters: Gst.Format format* Required (not null) On return contains the GstFormat used. Object out_values Number cur Returns: Boolean	Gst.Element
	recalculate_latency () : Boolean Query bin for the current latency using and reconfigures this latency to all the elements with a LATENCY event. Query bin for the current latency using and reconfigures this latency to all the elements with 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 'do-latency' signal so any custom latency calculations will be performed. Returns: Boolean	Gst.Bin
	release_request_pad (Pad *pad) : none Makes the element free the previously requested pad as obtained with gst_element_get_request_pad(). Makes the element free the previously requested pad as obtained with gst_element_get_request_pad(). This does not unref the pad. If the pad was created by using gst_element_get_request_pad(), gst_element_release_request_pad() needs to be followed by gst_object_unref() to free the pad. MT safe. Parameters: Gst.Pad pad* Required (not null) Returns: none	Gst.Element
	remove (Element *element) : Boolean Removes the element from the bin, unparenting it as well. 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. MT safe. the bin does not want to remove the element. Parameters: Gst.Element element* Required (not null) Returns: Boolean	Gst.Bin
	remove_pad (Pad *pad) : Boolean Removes pad* from element. Removes pad from element. pad will be destroyed if it has not been referenced elsewhere using gst_object_unparent(). This function is used by plugin developers and should not be used by applications. Pads that were dynamically requested from elements with gst_element_get_request_pad() should be released with the gst_element_release_request_pad() function instead. Pads are not automatically deactivated so elements should perform the needed steps to deactivate the pad in case this pad is removed in the PAUSED or PLAYING state. See gst_pad_set_active() for more information about deactivating pads. The pad and the element should be unlocked when calling this function. This function will emit the GstElement::pad-removed signal on the element. pad does not belong to the provided element. MT safe. Parameters: Gst.Pad pad Required (not null) Returns: Boolean	Gst.Element
	replace (Object *newobj) : none Unrefs the GstObject* pointed to by oldobj, refs newobj and puts newobj in *oldobj. Unrefs the GstObject pointed to by oldobj, refs newobj and puts newobj in *oldobj. Be carefull when calling this function, it does not take any locks. You might want to lock the object owning oldobj pointer before calling this function. Make sure not to LOCK oldobj because it might be unreffed which could cause a deadlock when it is disposed. Parameters: Gst.Object newobj Required (not null) Returns: none	Gst.Object
	requires_clock () : Boolean Query if the element requires a clock. Query if the element requires a clock. MT safe. Returns: Boolean	Gst.Element
	restore_thyself (Node *self) : none Restores object* with the data from the parent XML node. Restores object with the data from the parent XML node. Parameters: libxml2.Node self Required (not null) Returns: none	Gst.Object
	save_thyself (Node *parent) : libxml2.Node Saves object* into the parent XML node. Saves object into the parent XML node. Parameters: libxml2.Node parent Required (not null) Returns: libxml2.Node	Gst.Object
	seek (Number *rate, Format format, SeekFlags flags, SeekType cur_type, Number cur, SeekType stop_type, Number stop) : Boolean Sends a seek event to an element. Sends a seek event to an element. See gst_event_new_seek() for the details of the parameters. The seek event is sent to the element using gst_element_send_event(). MT safe. Parameters: Number rate* Required (not null) Gst.Format format Required (not null) Gst.SeekFlags flags Required (not null) Gst.SeekType cur_type Required (not null) Number cur Required (not null) Gst.SeekType stop_type Required (not null) Number stop Required (not null) Returns: Boolean	Gst.Element
	seek_simple (Format *format, SeekFlags seek_flags, Number seek_pos) : Boolean Parameters: Gst.Format format* Required (not null) Gst.SeekFlags seek_flags Required (not null) Number seek_pos Required (not null) Returns: Boolean	Gst.Element
	send_event (Event *event) : Boolean Sends an event to an element. Sends an event to an element. If the element doesn't implement an event handler, the event will be pushed on a random linked sink pad for upstream events or a random linked source pad for downstream events. This function takes owership of the provided event so you should gst_event_ref() it if you want to reuse the event after this call. MT safe. Parameters: Gst.Event event* Required (not null) Returns: Boolean	Gst.Element
	set_auto_flush_bus (Boolean *auto_flush) : none the pipeline goes from READY to NULL state Usually, when a pipeline goes from READY to NULL state, it automatically flushes all pending messages on the bus, which is done for refcounting purposes, to break circular references. the pipeline goes from READY to NULL state Usually, when a pipeline goes from READY to NULL state, it automatically flushes all pending messages on the bus, which is done for refcounting purposes, to break circular references. This means that applications that update state using (async) bus messages (e.g. do certain things when a pipeline goes from PAUSED to READY) might not get to see messages when the pipeline is shut down, because they might be flushed before they can be dispatched in the main thread. This behaviour can be disabled using this function. It is important that all messages on the bus are handled when the automatic flushing is disabled else memory leaks will be introduced. MT safe. Parameters: Boolean auto_flush* Required (not null) Returns: none	Gst.Pipeline
	set_base_time (Number *time) : none Set the base time of an element. Set the base time of an element. See gst_element_get_base_time(). MT safe. Parameters: Number time* Required (not null) Returns: none	Gst.Element
	set_bus (Bus *bus) : none Sets the bus of the element. Sets the bus of the element. Increases the refcount on the bus. For internal use only, unless you're testing elements. MT safe. Parameters: Gst.Bus bus* Required (not null) Returns: none	Gst.Element
	set_clock (Clock *clock) : Boolean Set the clock for pipeline. Set the clock for pipeline. The clock will be distributed to all the elements managed by the pipeline. MT safe. Parameters: Gst.Clock clock* Required (not null) Returns: Boolean some element did not accept the clock.	Gst.Pipeline
	set_delay (Number *delay) : none Set the expected delay needed for all elements to perform the PAUSED to PLAYING state change. Set the expected delay needed for all elements to perform the PAUSED to PLAYING state change. delay* will be added to the base time of the elements so that they wait an additional delay amount of time before starting to process buffers and cannot be GST_CLOCK_TIME_NONE. This option is used for tuning purposes and should normally not be used. MT safe. Parameters: Number delay Required (not null) Returns: none	Gst.Pipeline
	set_index (Index *index) : none Set index* on the element. Set index on the element. The refcount of the index will be increased, any previously set index is unreffed. MT safe. Parameters: Gst.Index index Required (not null) Returns: none	Gst.Element
	set_locked_state (Boolean *locked_state) : Boolean Locks the state of an element, so state changes of the parent don't affect this element anymore. Locks the state of an element, so state changes of the parent don't affect this element anymore. MT safe. or the elements state-locking needed no change. Parameters: Boolean locked_state* Required (not null) Returns: Boolean	Gst.Element
	set_name (String *name) : Boolean Sets the name of object, or gives object* a guaranteed unique name (if name is NULL). Sets the name of object, or gives object a guaranteed unique name (if name is NULL). This function makes a copy of the provided name, so the caller retains ownership of the name it sent. a parent cannot be renamed, this function returns FALSE in those cases. MT safe. This function grabs and releases object's LOCK. Parameters: String name Required (not null) Returns: Boolean	Gst.Object
	set_name_prefix (String *name_prefix) : none Sets the name prefix of object* to name_prefix. Sets the name prefix of object to name_prefix. This function makes a copy of the provided name prefix, so the caller retains ownership of the name prefix it sent. MT safe. This function grabs and releases object's LOCK. Parameters: String name_prefix Required (not null) Returns: none	Gst.Object
	set_new_stream_time (Number *time) : none Set the new start time of pipeline* to time. Set the new start time of pipeline to time. The start time is used to set the base time on the elements (see gst_element_set_base_time()) in the PAUSED->PLAYING state transition. Setting time to GST_CLOCK_TIME_NONE will disable the pipeline's management of element base time. The application will then be responsible for performing base time distribution. This is sometimes useful if you want to synchronize capture from multiple pipelines, and you can also ensure that the pipelines have the same clock. MT safe. gst_element_set_start_time(). Parameters: Number time Required (not null) Returns: none	Gst.Pipeline
	set_parent (Object *parent) : Boolean Sets the parent of object* to parent. Sets the parent of object to parent. The object's reference count will be incremented, and any floating reference will be removed (see gst_object_sink()). This function causes the parent-set signal to be emitted when the parent was successfully set. already had a parent or object and parent are the same. MT safe. Grabs and releases object's LOCK. Parameters: Gst.Object parent Required (not null) Returns: Boolean	Gst.Object
	set_start_time (Number *time) : none Set the start time of an element. Set the start time of an element. The start time of the element is the running time of the element when it last went to the PAUSED state. In READY or after a flushing seek, it is set to 0. Toplevel elements like GstPipeline* will manage the start_time and base_time on its children. Setting the start_time to GST_CLOCK_TIME_NONE on such a toplevel element will disable the distribution of the base_time to the children and can be useful if the application manages the base_time itself, for example if you want to synchronize capture from multiple pipelines, and you can also ensure that the pipelines have the same clock. MT safe. Parameters: Number time Required (not null) Returns: none	Gst.Element
	set_state (State *state) : Gst.StateChangeReturn Sets the state of the element. Sets the state of the element. This function will try to set the requested state by going through all the intermediary states and calling the class's state change function for each. This function can return GST_STATE_CHANGE_ASYNC, in which case the element will perform the remainder of the state change asynchronously in another thread. An application can use gst_element_get_state() to wait for the completion of the state change or it can wait for a state change message on the bus. State changes to GST_STATE_READY* or GST_STATE_NULL never return GST_STATE_CHANGE_ASYNC. MT safe. Parameters: Gst.State state Required (not null) Returns: Gst.StateChangeReturn	Gst.Element
	sync_state_with_parent () : Boolean Tries to change the state of the element to the same as its parent. Tries to change the state of the element to the same as its parent. If this function returns FALSE, the state of element is undefined. MT safe. Returns: Boolean	Gst.Element
	unlink (Element *dest) : none Unlinks all source pads of the source element with all sink pads of the sink element to which they are linked. Unlinks all source pads of the source element with all sink pads of the sink element to which they are linked. If the link has been made using gst_element_link(), it could have created an requestpad, which has to be released using gst_element_release_request_pad(). Parameters: Gst.Element dest* Required (not null) Returns: none	Gst.Element
	unlink_pads (String *srcpadname, Element dest, String destpadname) : none Unlinks the two named pads of the source and destination elements. Unlinks the two named pads of the source and destination elements. Parameters: String srcpadname* Required (not null) Gst.Element dest Required (not null) String destpadname Required (not null) Returns: none	Gst.Element
	unparent () : none Clear the parent of object, removing the associated reference. Clear the parent of object, removing the associated reference. This function decreases the refcount of object. MT safe. Grabs and releases object's lock. Returns: none	Gst.Object
	use_clock (Clock *clock) : none Force pipeline* to use the given clock. Force pipeline to use the given clock. The pipeline will always use the given clock even if new clock providers are added to this pipeline. If clock is NULL all clocking will be disabled which will make the pipeline run as fast as possible. MT safe. Parameters: Gst.Clock clock Required (not null) Returns: none	Gst.Pipeline

Events - usage syntax: this.signals.EVENTNAME.connect( Function )
Event		Defined By
	child_added (ChildProxy *self, Object object) : none Parameters: Gst.ChildProxy self* GObject.Object object Returns: {none}	Gst.ChildProxy
	child_removed (ChildProxy *self, Object object) : none Parameters: Gst.ChildProxy self* GObject.Object object Returns: {none}	Gst.ChildProxy
	deep_notify (Object *self, Object prop_object, ParamSpec prop) : none The deep notify signal is used to be notified of property changes. The deep notify signal is used to be notified of property changes. It is typically attached to the toplevel bin to receive notifications from all the elements contained in that bin. Parameters: Gst.Object self* Gst.Object prop_object GObject.ParamSpec prop Returns: {none}	Gst.Object
	do_latency (Bin *self) : Boolean Will be emitted when the bin needs to perform latency calculations. Will be emitted when the bin needs to perform latency calculations. This signal is only emited for toplevel bins or when 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: Gst.Bin self* Returns: {Boolean}	Gst.Bin
	element_added (Bin *self, Element element) : none Will be emitted after the element was added to the bin. Will be emitted after the element was added to the bin. Parameters: Gst.Bin self* Gst.Element element Returns: {none}	Gst.Bin
	element_removed (Bin *self, Element element) : none Will be emitted after the element was removed from the bin. Will be emitted after the element was removed from the bin. Parameters: Gst.Bin self* Gst.Element element Returns: {none}	Gst.Bin
	no_more_pads (Element *self) : none This signals that the element will not generate more dynamic pads. This signals that the element will not generate more dynamic pads. Parameters: Gst.Element self* Returns: {none}	Gst.Element
	object_saved (Object *self, void *xml_node) : none Trigered whenever a new object is saved to XML. Trigered whenever a new object is saved to XML. You can connect to this signal to insert custom XML tags into the core XML. Parameters: Gst.Object self* void* xml_node Returns: {none}	Gst.Object
	pad_added (Element *self, Pad new_pad) : none a new GstPad* has been added to the element. a new GstPad has been added to the element. Parameters: Gst.Element self Gst.Pad new_pad Returns: {none}	Gst.Element
	pad_removed (Element *self, Pad old_pad) : none a GstPad* has been removed from the element a GstPad has been removed from the element Parameters: Gst.Element self Gst.Pad old_pad Returns: {none}	Gst.Element
	parent_set (Object *self, Object parent) : none Emitted when the parent of an object is set. Emitted when the parent of an object is set. Parameters: Gst.Object self* Gst.Object parent Returns: {none}	Gst.Object
	parent_unset (Object *self, Object parent) : none Emitted when the parent of an object is unset. Emitted when the parent of an object is unset. Parameters: Gst.Object self* Gst.Object parent Returns: {none}	Gst.Object

Un-official Seed Documentation

Gst

Classes

Interfaces

Structs

Unions

Enums

Class Gst.Pipeline