Struct PushSrc
Sourcepub struct PushSrc { /* private fields */ }Expand description
This class is mostly useful for elements that cannot do random access, or at least very slowly. The source usually prefers to push out a fixed size buffer.
Subclasses usually operate in a format that is different from the
default GST_FORMAT_BYTES format of BaseSrc.
Classes extending this base class will usually be scheduled in a push based mode. If the peer accepts to operate without offsets and within the limits of the allowed block size, this class can operate in getrange based mode automatically. To make this possible, the subclass should implement and override the SCHEDULING query.
The subclass should extend the methods from the baseclass in addition to the ::create method.
Seeking, flushing, scheduling and sync is all handled by this base class.
§Implements
BaseSrcExt, [trait@gst::prelude::ElementExt], gst::prelude::ObjectExt, [trait@glib::ObjectExt], BaseSrcExtManual
GLib type: GObject with reference counted clone semantics.
Implementations§
Trait Implementations§
Source§impl HasParamSpec for PushSrc
impl HasParamSpec for PushSrc
Source§impl<T: PushSrcImpl> IsSubclassable<T> for PushSrc
impl<T: PushSrcImpl> IsSubclassable<T> for PushSrc
Source§fn class_init(klass: &mut Class<Self>)
fn class_init(klass: &mut Class<Self>)
Override the virtual methods of this class for the given subclass and do other class
initialization. Read more
Source§fn instance_init(instance: &mut InitializingObject<T>)
fn instance_init(instance: &mut InitializingObject<T>)
Instance specific initialization. Read more
Source§impl Ord for PushSrc
impl Ord for PushSrc
Source§fn cmp(&self, other: &Self) -> Ordering
fn cmp(&self, other: &Self) -> Ordering
Comparison for two GObjects.
Compares the memory addresses of the provided objects.
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
Source§impl<OT: ObjectType> PartialEq<OT> for PushSrc
impl<OT: ObjectType> PartialEq<OT> for PushSrc
Source§impl<OT: ObjectType> PartialOrd<OT> for PushSrc
impl<OT: ObjectType> PartialOrd<OT> for PushSrc
Source§impl StaticType for PushSrc
impl StaticType for PushSrc
Source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self.impl Eq for PushSrc
impl IsA<BaseSrc> for PushSrc
impl IsA<Element> for PushSrc
impl IsA<Object> for PushSrc
impl Send for PushSrc
impl Sync for PushSrc
Auto Trait Implementations§
impl Freeze for PushSrc
impl RefUnwindSafe for PushSrc
impl Unpin for PushSrc
impl UnwindSafe for PushSrc
Blanket Implementations§
Source§impl<O> BaseSrcExt for O
impl<O> BaseSrcExt for O
Source§fn blocksize(&self) -> u32
fn blocksize(&self) -> u32
Get the number of bytes that
self will push out with each buffer. Read moreSource§fn buffer_pool(&self) -> Option<BufferPool>
fn buffer_pool(&self) -> Option<BufferPool>
Returns Read more
Source§fn does_timestamp(&self) -> bool
fn does_timestamp(&self) -> bool
Query if
self timestamps outgoing buffers based on the current running_time. Read moreSource§fn negotiate(&self) -> bool
fn negotiate(&self) -> bool
Negotiates src pad caps with downstream elements.
Unmarks GST_PAD_FLAG_NEED_RECONFIGURE in any case. But marks it again
if
GstBaseSrcClass::negotiate fails. Read moreSource§fn new_seamless_segment(&self, start: i64, stop: i64, time: i64) -> bool
fn new_seamless_segment(&self, start: i64, stop: i64, time: i64) -> bool
👎Deprecated: Since 1.18
Prepare a new seamless segment for emission downstream. This function must
only be called by derived sub-classes, and only from the
GstBaseSrcClass::create function,
as the stream-lock needs to be held. Read moreSource§fn new_segment(&self, segment: &Segment) -> Result<(), BoolError>
fn new_segment(&self, segment: &Segment) -> Result<(), BoolError>
Prepare a new segment for emission downstream. This function must
only be called by derived sub-classes, and only from the
GstBaseSrcClass::create function,
as the stream-lock needs to be held. Read moreSource§fn push_segment(&self, segment: &Segment) -> bool
fn push_segment(&self, segment: &Segment) -> bool
Send a new segment downstream. This function must
only be called by derived sub-classes, and only from the
GstBaseSrcClass::create function,
as the stream-lock needs to be held.
This method also requires that an out caps has been configured, so
set_caps() needs to have been called before. Read moreSource§fn set_async(&self, async_: bool)
fn set_async(&self, async_: bool)
Configure async behaviour in
self, no state change will block. The open,
close, start, stop, play and pause virtual methods will be executed in a
different thread and are thus allowed to perform blocking operations. Any
blocking operation should be unblocked with the unlock vmethod. Read moreSource§fn set_automatic_eos(&self, automatic_eos: bool)
fn set_automatic_eos(&self, automatic_eos: bool)
Source§fn set_blocksize(&self, blocksize: u32)
fn set_blocksize(&self, blocksize: u32)
Set the number of bytes that
self will push out with each buffer. When
blocksize is set to -1, a default length will be used. Read moreSource§fn set_caps(&self, caps: &Caps) -> Result<(), BoolError>
fn set_caps(&self, caps: &Caps) -> Result<(), BoolError>
Set new caps on the basesrc source pad. Read more
Source§fn set_do_timestamp(&self, timestamp: bool)
fn set_do_timestamp(&self, timestamp: bool)
Configure
self to automatically timestamp outgoing buffers based on the
current running_time of the pipeline. This property is mostly useful for live
sources. Read moreSource§fn set_dynamic_size(&self, dynamic: bool)
fn set_dynamic_size(&self, dynamic: bool)
If not
dynamic, size is only updated when needed, such as when trying to
read past current tracked size. Otherwise, size is checked for upon each
read. Read moreSource§fn set_format(&self, format: Format)
fn set_format(&self, format: Format)
Sets the default format of the source. This will be the format used
for sending SEGMENT events and for performing seeks. Read more
Source§fn start_complete(&self, ret: impl Into<FlowReturn>)
fn start_complete(&self, ret: impl Into<FlowReturn>)
Complete an asynchronous start operation. When the subclass overrides the
start method, it should call
start_complete() when the start
operation completes either from the same thread or from an asynchronous
helper thread. Read moreSource§fn start_wait(&self) -> Result<FlowSuccess, FlowError>
fn start_wait(&self) -> Result<FlowSuccess, FlowError>
Wait until the start operation completes. Read more
Source§fn wait_playing(&self) -> Result<FlowSuccess, FlowError>
fn wait_playing(&self) -> Result<FlowSuccess, FlowError>
If the
GstBaseSrcClass::create method performs its own synchronisation
against the clock it must unblock when going from PLAYING to the PAUSED state
and call this method before continuing to produce the remaining data. Read moreSource§fn is_automatic_eos(&self) -> bool
fn is_automatic_eos(&self) -> bool
fn num_buffers(&self) -> i32
fn set_num_buffers(&self, num_buffers: i32)
fn is_typefind(&self) -> bool
fn set_typefind(&self, typefind: bool)
fn connect_automatic_eos_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_blocksize_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_do_timestamp_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_num_buffers_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_typefind_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F, ) -> SignalHandlerId
Source§impl<O> BaseSrcExtManual for O
impl<O> BaseSrcExtManual for O
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> Cast for Twhere
T: ObjectType,
impl<T> Cast for Twhere
T: ObjectType,
Source§fn upcast<T>(self) -> Twhere
T: ObjectType,
Self: IsA<T>,
fn upcast<T>(self) -> Twhere
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Upcasts an object to a superclass or interface
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fn upcast_ref<T>(&self) -> &Twhere
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Upcasts an object to a reference of its superclass or interface
T. Read moreSource§fn downcast<T>(self) -> Result<T, Self>where
T: ObjectType,
Self: MayDowncastTo<T>,
fn downcast<T>(self) -> Result<T, Self>where
T: ObjectType,
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Tries to downcast to a subclass or interface implementor
T. Read moreSource§fn downcast_ref<T>(&self) -> Option<&T>where
T: ObjectType,
Self: MayDowncastTo<T>,
fn downcast_ref<T>(&self) -> Option<&T>where
T: ObjectType,
Self: MayDowncastTo<T>,
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T. Read moreSource§fn dynamic_cast<T>(self) -> Result<T, Self>where
T: ObjectType,
fn dynamic_cast<T>(self) -> Result<T, Self>where
T: ObjectType,
Tries to cast to an object of type
T. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while upcast will do many checks at compile-time already. downcast will
perform the same checks at runtime as dynamic_cast, but will also ensure some amount of
compile-time safety. Read moreSource§fn dynamic_cast_ref<T>(&self) -> Option<&T>where
T: ObjectType,
fn dynamic_cast_ref<T>(&self) -> Option<&T>where
T: ObjectType,
Tries to cast to reference to an object of type
T. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while downcast and upcast will do many checks at compile-time already. Read moreSource§unsafe fn unsafe_cast<T>(self) -> Twhere
T: ObjectType,
unsafe fn unsafe_cast<T>(self) -> Twhere
T: ObjectType,
Casts to
T unconditionally. Read moreSource§unsafe fn unsafe_cast_ref<T>(&self) -> &Twhere
T: ObjectType,
unsafe fn unsafe_cast_ref<T>(&self) -> &Twhere
T: ObjectType,
Casts to
&T unconditionally. Read moreSource§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
§impl<O> ElementExt for Owhere
O: IsA<Element>,
impl<O> ElementExt for Owhere
O: IsA<Element>,
§fn abort_state(&self)
fn abort_state(&self)
Abort the state change of the element. This function is used
by elements that do asynchronous state changes and find out
something is wrong. Read more
§fn add_pad(&self, pad: &impl IsA<Pad>) -> Result<(), BoolError>
fn add_pad(&self, pad: &impl IsA<Pad>) -> Result<(), BoolError>
Adds a pad (link point) to
self. pad’s parent will be set to self;
see [GstObjectExt::set_parent()][crate::prelude::GstObjectExt::set_parent()] for refcounting information. Read more§fn change_state(
&self,
transition: StateChange,
) -> Result<StateChangeSuccess, StateChangeError>
fn change_state( &self, transition: StateChange, ) -> Result<StateChangeSuccess, StateChangeError>
§fn continue_state(
&self,
ret: impl Into<StateChangeReturn>,
) -> Result<StateChangeSuccess, StateChangeError>
fn continue_state( &self, ret: impl Into<StateChangeReturn>, ) -> Result<StateChangeSuccess, StateChangeError>
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 [
StateChangeReturn::Success][crate::StateChangeReturn::Success] from the state change function. Read more§fn create_all_pads(&self)
fn create_all_pads(&self)
Creates a pad for each pad template that is always available.
This function is only useful during object initialization of
subclasses of [
Element][crate::Element].§fn decorate_stream_id(&self, stream_id: &str) -> GString
fn decorate_stream_id(&self, stream_id: &str) -> GString
§fn base_time(&self) -> Option<ClockTime>
fn base_time(&self) -> Option<ClockTime>
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. Read more
§fn bus(&self) -> Option<Bus>
fn bus(&self) -> Option<Bus>
Returns the bus of the element. Note that only a [
Pipeline][crate::Pipeline] will provide a
bus for the application. Read more§fn clock(&self) -> Option<Clock>
fn clock(&self) -> Option<Clock>
Gets the currently configured clock of the element. This is the clock as was
last set with [
set_clock()][Self::set_clock()]. Read more§fn compatible_pad(
&self,
pad: &impl IsA<Pad>,
caps: Option<&Caps>,
) -> Option<Pad>
fn compatible_pad( &self, pad: &impl IsA<Pad>, caps: Option<&Caps>, ) -> Option<Pad>
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. Read more
§fn compatible_pad_template(
&self,
compattempl: &PadTemplate,
) -> Option<PadTemplate>
fn compatible_pad_template( &self, compattempl: &PadTemplate, ) -> Option<PadTemplate>
Retrieves a pad template from
self that is compatible with compattempl.
Pads from compatible templates can be linked together. Read more§fn context(&self, context_type: &str) -> Option<Context>
fn context(&self, context_type: &str) -> Option<Context>
Gets the context with
context_type set on the element or NULL. Read more§fn factory(&self) -> Option<ElementFactory>
fn factory(&self) -> Option<ElementFactory>
Retrieves the factory that was used to create this element. Read more
§fn start_time(&self) -> Option<ClockTime>
fn start_time(&self) -> Option<ClockTime>
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. Read more
§fn state(
&self,
timeout: impl Into<Option<ClockTime>>,
) -> (Result<StateChangeSuccess, StateChangeError>, State, State)
fn state( &self, timeout: impl Into<Option<ClockTime>>, ) -> (Result<StateChangeSuccess, StateChangeError>, State, State)
Gets the state of the element. Read more
§fn static_pad(&self, name: &str) -> Option<Pad>
fn static_pad(&self, name: &str) -> Option<Pad>
Retrieves a pad from
self by name. This version only retrieves
already-existing (i.e. ‘static’) pads. Read more§fn is_locked_state(&self) -> bool
fn is_locked_state(&self) -> bool
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 [
State::Null][crate::State::Null]. Read more§fn lost_state(&self)
fn lost_state(&self)
Brings the element to the lost state. The current state of the
element is copied to the pending state so that any call to
[
state()][Self::state()] will return [StateChangeReturn::Async][crate::StateChangeReturn::Async]. Read more§fn no_more_pads(&self)
fn no_more_pads(&self)
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 [
PadPresence::Sometimes][crate::PadPresence::Sometimes]
pad templates use this in combination with autopluggers to figure out that
the element is done initializing its pads. Read more§fn post_message(&self, message: Message) -> Result<(), BoolError>
fn post_message(&self, message: Message) -> Result<(), BoolError>
Post a message on the element’s [
Bus][crate::Bus]. 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. Read more§fn provide_clock(&self) -> Option<Clock>
fn provide_clock(&self) -> Option<Clock>
Get the clock provided by the given element. Read more
§fn release_request_pad(&self, pad: &impl IsA<Pad>)
fn release_request_pad(&self, pad: &impl IsA<Pad>)
Makes the element free the previously requested pad as obtained
with [
request_pad()][Self::request_pad()]. Read more§fn remove_pad(&self, pad: &impl IsA<Pad>) -> Result<(), BoolError>
fn remove_pad(&self, pad: &impl IsA<Pad>) -> Result<(), BoolError>
Removes
pad from self. pad will be destroyed if it has not been
referenced elsewhere using [GstObjectExt::unparent()][crate::prelude::GstObjectExt::unparent()]. Read more§fn request_pad(
&self,
templ: &PadTemplate,
name: Option<&str>,
caps: Option<&Caps>,
) -> Option<Pad>
fn request_pad( &self, templ: &PadTemplate, name: Option<&str>, caps: Option<&Caps>, ) -> Option<Pad>
Retrieves a request pad from the element according to the provided template.
Pad templates can be looked up using
[
ElementFactory::static_pad_templates()][crate::ElementFactory::static_pad_templates()]. Read more§fn set_base_time(&self, time: ClockTime)
fn set_base_time(&self, time: ClockTime)
Set the base time of an element. See [
base_time()][Self::base_time()]. Read more§fn set_bus(&self, bus: Option<&Bus>)
fn set_bus(&self, bus: Option<&Bus>)
Sets the bus of the element. Increases the refcount on the bus.
For internal use only, unless you’re testing elements. Read more
§fn set_clock(&self, clock: Option<&impl IsA<Clock>>) -> Result<(), BoolError>
fn set_clock(&self, clock: Option<&impl IsA<Clock>>) -> Result<(), BoolError>
Sets the clock for the element. This function increases the
refcount on the clock. Any previously set clock on the object
is unreffed. Read more
§fn set_context(&self, context: &Context)
fn set_context(&self, context: &Context)
Sets the context of the element. Increases the refcount of the context. Read more
§fn set_locked_state(&self, locked_state: bool) -> bool
fn set_locked_state(&self, locked_state: bool) -> bool
Locks the state of an element, so state changes of the parent don’t affect
this element anymore. Read more
§fn set_start_time(&self, time: impl Into<Option<ClockTime>>)
fn set_start_time(&self, time: impl Into<Option<ClockTime>>)
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. Read more
§fn set_state(
&self,
state: State,
) -> Result<StateChangeSuccess, StateChangeError>
fn set_state( &self, state: State, ) -> Result<StateChangeSuccess, StateChangeError>
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. Read more
§fn sync_state_with_parent(&self) -> Result<(), BoolError>
fn sync_state_with_parent(&self) -> Result<(), BoolError>
§fn unlink(&self, dest: &impl IsA<Element>)
fn unlink(&self, dest: &impl IsA<Element>)
Unlinks all source pads of the source element with all sink pads
of the sink element to which they are linked. Read more
§fn unlink_pads(
&self,
srcpadname: &str,
dest: &impl IsA<Element>,
destpadname: &str,
)
fn unlink_pads( &self, srcpadname: &str, dest: &impl IsA<Element>, destpadname: &str, )
Unlinks the two named pads of the source and destination elements. Read more
§fn connect_no_more_pads<F>(&self, f: F) -> SignalHandlerId
fn connect_no_more_pads<F>(&self, f: F) -> SignalHandlerId
This signals that the element will not generate more dynamic pads.
Note that this signal will usually be emitted from the context of
the streaming thread.
§fn connect_pad_added<F>(&self, f: F) -> SignalHandlerId
fn connect_pad_added<F>(&self, f: F) -> SignalHandlerId
a new [
Pad][crate::Pad] has been added to the element. Note that this signal will
usually be emitted from the context of the streaming thread. Also keep in
mind that if you add new elements to the pipeline in the signal handler
you will need to set them to the desired target state with
[set_state()][Self::set_state()] or [sync_state_with_parent()][Self::sync_state_with_parent()]. Read more§fn connect_pad_removed<F>(&self, f: F) -> SignalHandlerId
fn connect_pad_removed<F>(&self, f: F) -> SignalHandlerId
a [
Pad][crate::Pad] has been removed from the element Read more§impl<O> ElementExtManual for Owhere
O: IsA<Element>,
impl<O> ElementExtManual for Owhere
O: IsA<Element>,
fn element_class(&self) -> &Class<Element>
fn current_state(&self) -> State
fn pending_state(&self) -> State
§fn send_event(&self, event: impl Into<Event>) -> bool
fn send_event(&self, event: impl Into<Event>) -> bool
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
downstream events or a random linked source pad for upstream events. Read more
§fn pad_template(&self, name: &str) -> Option<PadTemplate>
fn pad_template(&self, name: &str) -> Option<PadTemplate>
Retrieves a padtemplate from
self with the given name. Read more§fn pad_template_list(&self) -> List<PadTemplate>
fn pad_template_list(&self) -> List<PadTemplate>
Retrieves a list of the pad templates associated with
self. The
list must not be modified by the calling code. Read more§fn message_full<T>(
&self,
type_: ElementMessageType,
code: T,
message: Option<&str>,
debug: Option<&str>,
file: &str,
function: &str,
line: u32,
)where
T: MessageErrorDomain,
fn message_full<T>(
&self,
type_: ElementMessageType,
code: T,
message: Option<&str>,
debug: Option<&str>,
file: &str,
function: &str,
line: u32,
)where
T: MessageErrorDomain,
Post an error, warning or info message on the bus from inside an element. Read more
fn set_element_flags(&self, flags: ElementFlags)
fn unset_element_flags(&self, flags: ElementFlags)
fn element_flags(&self) -> ElementFlags
§fn message_full_with_details<T>(
&self,
type_: ElementMessageType,
code: T,
message: Option<&str>,
debug: Option<&str>,
file: &str,
function: &str,
line: u32,
structure: Structure,
)where
T: MessageErrorDomain,
fn message_full_with_details<T>(
&self,
type_: ElementMessageType,
code: T,
message: Option<&str>,
debug: Option<&str>,
file: &str,
function: &str,
line: u32,
structure: Structure,
)where
T: MessageErrorDomain,
Post an error, warning or info message on the bus from inside an element. Read more
fn post_error_message(&self, msg: ErrorMessage)
§fn iterate_pads(&self) -> Iterator<Pad>
fn iterate_pads(&self) -> Iterator<Pad>
Retrieves an iterator of
self’s pads. The iterator should
be freed after usage. Also more specialized iterators exists such as
[iterate_src_pads()][Self::iterate_src_pads()] or [iterate_sink_pads()][Self::iterate_sink_pads()]. Read more§fn iterate_sink_pads(&self) -> Iterator<Pad>
fn iterate_sink_pads(&self) -> Iterator<Pad>
Retrieves an iterator of
self’s sink pads. Read more§fn iterate_src_pads(&self) -> Iterator<Pad>
fn iterate_src_pads(&self) -> Iterator<Pad>
Retrieves an iterator of
self’s source pads. Read morefn pads(&self) -> Vec<Pad>
fn sink_pads(&self) -> Vec<Pad>
fn src_pads(&self) -> Vec<Pad>
§fn foreach_pad<F>(&self, func: F)
fn foreach_pad<F>(&self, func: F)
Call
func with user_data for each of self’s pads. func will be called
exactly once for each pad that exists at the time of this call, unless
one of the calls to func returns false in which case we will stop
iterating pads and return early. If new pads are added or pads are removed
while pads are being iterated, this will not be taken into account until
next time this function is used. Read more§fn foreach_sink_pad<F>(&self, func: F)
fn foreach_sink_pad<F>(&self, func: F)
Call
func with user_data for each of self’s sink pads. func will be
called exactly once for each sink pad that exists at the time of this call,
unless one of the calls to func returns false in which case we will stop
iterating pads and return early. If new sink pads are added or sink pads
are removed while the sink pads are being iterated, this will not be taken
into account until next time this function is used. Read more§fn foreach_src_pad<F>(&self, func: F)
fn foreach_src_pad<F>(&self, func: F)
Call
func with user_data for each of self’s source pads. func will be
called exactly once for each source pad that exists at the time of this call,
unless one of the calls to func returns false in which case we will stop
iterating pads and return early. If new source pads are added or source pads
are removed while the source pads are being iterated, this will not be taken
into account until next time this function is used. Read morefn num_pads(&self) -> u16
fn num_sink_pads(&self) -> u16
fn num_src_pads(&self) -> u16
§fn add_property_deep_notify_watch(
&self,
property_name: Option<&str>,
include_value: bool,
) -> NotifyWatchId
fn add_property_deep_notify_watch( &self, property_name: Option<&str>, include_value: bool, ) -> NotifyWatchId
property_name Read more§fn add_property_notify_watch(
&self,
property_name: Option<&str>,
include_value: bool,
) -> NotifyWatchId
fn add_property_notify_watch( &self, property_name: Option<&str>, include_value: bool, ) -> NotifyWatchId
property_name Read more§fn remove_property_notify_watch(&self, watch_id: NotifyWatchId)
fn remove_property_notify_watch(&self, watch_id: NotifyWatchId)
watch_id Read more§fn query_convert<U>(&self, src_val: impl FormattedValue) -> Option<U>where
U: SpecificFormattedValueFullRange,
fn query_convert<U>(&self, src_val: impl FormattedValue) -> Option<U>where
U: SpecificFormattedValueFullRange,
fn query_convert_generic( &self, src_val: impl FormattedValue, dest_format: Format, ) -> Option<GenericFormattedValue>
§fn query_duration<T>(&self) -> Option<T>where
T: SpecificFormattedValueIntrinsic,
fn query_duration<T>(&self) -> Option<T>where
T: SpecificFormattedValueIntrinsic,
Queries an element (usually top-level pipeline or playbin element) for the
total stream duration in nanoseconds. This query will only work once the
pipeline is prerolled (i.e. reached PAUSED or PLAYING state). The application
will receive an ASYNC_DONE message on the pipeline bus when that is the case. Read more
fn query_duration_generic( &self, format: Format, ) -> Option<GenericFormattedValue>
§fn query_position<T>(&self) -> Option<T>where
T: SpecificFormattedValueIntrinsic,
fn query_position<T>(&self) -> Option<T>where
T: SpecificFormattedValueIntrinsic,
Queries an element (usually top-level pipeline or playbin element) for the
stream position in nanoseconds. This will be a value between 0 and the
stream duration (if the stream duration is known). This query will usually
only work once the pipeline is prerolled (i.e. reached PAUSED or PLAYING
state). The application will receive an ASYNC_DONE message on the pipeline
bus when that is the case. Read more
fn query_position_generic( &self, format: Format, ) -> Option<GenericFormattedValue>
§fn seek<V>(
&self,
rate: f64,
flags: SeekFlags,
start_type: SeekType,
start: V,
stop_type: SeekType,
stop: impl CompatibleFormattedValue<V>,
) -> Result<(), BoolError>where
V: FormattedValue,
fn seek<V>(
&self,
rate: f64,
flags: SeekFlags,
start_type: SeekType,
start: V,
stop_type: SeekType,
stop: impl CompatibleFormattedValue<V>,
) -> Result<(), BoolError>where
V: FormattedValue,
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
[send_event()][Self::send_event()]. Read more§fn seek_simple(
&self,
seek_flags: SeekFlags,
seek_pos: impl FormattedValue,
) -> Result<(), BoolError>
fn seek_simple( &self, seek_flags: SeekFlags, seek_pos: impl FormattedValue, ) -> Result<(), BoolError>
Simple API to perform a seek on the given element, meaning it just seeks
to the given position relative to the start of the stream. For more complex
operations like segment seeks (e.g. for looping) or changing the playback
rate or seeking relative to the last configured playback segment you should
use [
seek()][Self::seek()]. Read more§fn call_async<F>(&self, func: F)
fn call_async<F>(&self, func: F)
Calls
func from another thread and passes user_data to it. This is to be
used for cases when a state change has to be performed from a streaming
thread, directly via [ElementExt::set_state()][crate::prelude::ElementExt::set_state()] or indirectly e.g. via SEEK
events. Read morefn call_async_future<F, T>( &self, func: F, ) -> Pin<Box<dyn Future<Output = T> + Send>>
§fn current_running_time(&self) -> Option<ClockTime>
fn current_running_time(&self) -> Option<ClockTime>
Returns the running time of the element. The running time is the
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if the element has no clock, or if its base time has not been set. Read more
§fn current_clock_time(&self) -> Option<ClockTime>
fn current_clock_time(&self) -> Option<ClockTime>
Returns the current clock time of the element, as in, the time of the
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§fn request_pad_simple(&self, name: &str) -> Option<Pad>
fn request_pad_simple(&self, name: &str) -> Option<Pad>
The name of this function is confusing to people learning GStreamer.
[
request_pad_simple()][Self::request_pad_simple()] aims at making it more explicit it is
a simplified [ElementExt::request_pad()][crate::prelude::ElementExt::request_pad()]. Read more§fn link(&self, dest: &impl IsA<Element>) -> Result<(), BoolError>
fn link(&self, dest: &impl IsA<Element>) -> Result<(), BoolError>
Links
self 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 manually when unlinking.
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&self,
dest: &impl IsA<Element>,
filter: &Caps,
) -> Result<(), BoolError>
fn link_filtered( &self, dest: &impl IsA<Element>, filter: &Caps, ) -> Result<(), BoolError>
Links
self 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. Read more§fn link_pads(
&self,
srcpadname: Option<&str>,
dest: &impl IsA<Element>,
destpadname: Option<&str>,
) -> Result<(), BoolError>
fn link_pads( &self, srcpadname: Option<&str>, dest: &impl IsA<Element>, destpadname: Option<&str>, ) -> Result<(), BoolError>
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. Read more
§fn link_pads_filtered(
&self,
srcpadname: Option<&str>,
dest: &impl IsA<Element>,
destpadname: Option<&str>,
filter: &Caps,
) -> Result<(), BoolError>
fn link_pads_filtered( &self, srcpadname: Option<&str>, dest: &impl IsA<Element>, destpadname: Option<&str>, filter: &Caps, ) -> Result<(), BoolError>
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 None, makes sure that the caps of the link is a subset of caps. Read more§fn link_pads_full(
&self,
srcpadname: Option<&str>,
dest: &impl IsA<Element>,
destpadname: Option<&str>,
flags: PadLinkCheck,
) -> Result<(), BoolError>
fn link_pads_full( &self, srcpadname: Option<&str>, dest: &impl IsA<Element>, destpadname: Option<&str>, flags: PadLinkCheck, ) -> Result<(), BoolError>
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. Read more
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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *const GList) -> Vec<T>
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unsafe fn from_glib_none_as_vec(ptr: *const GPtrArray) -> Vec<T>
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T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *const GSList) -> Vec<T>
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§impl<O> GObjectExtManualGst for O
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§impl<O> GstObjectExt for Owhere
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§fn add_control_binding(
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) -> Result<(), BoolError>
fn add_control_binding( &self, binding: &impl IsA<ControlBinding>, ) -> Result<(), BoolError>
Attach the [
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fn control_rate(&self) -> Option<ClockTime>
Obtain the control-rate for this
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§fn has_active_control_bindings(&self) -> bool
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§fn sync_values(&self, timestamp: ClockTime) -> Result<(), BoolError>
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)
Stop emission of the currently emitted signal.
Source§fn stop_signal_emission_by_name(&self, signal_name: &str)
fn stop_signal_emission_by_name(&self, signal_name: &str)
Stop emission of the currently emitted signal by the (possibly detailed) signal name.
Source§fn connect<F>(
&self,
signal_name: &str,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
Connect to the signal
signal_name on this object. Read moreSource§fn connect_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
Connect to the signal
signal_id on this object. Read moreSource§fn connect_local<F>(
&self,
signal_name: &str,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect_local<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
Connect to the signal
signal_name on this object. Read moreSource§fn connect_local_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect_local_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
Connect to the signal
signal_id on this object. Read moreSource§unsafe fn connect_unsafe<F>(
&self,
signal_name: &str,
after: bool,
callback: F,
) -> SignalHandlerId
unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
Connect to the signal
signal_name on this object. Read moreSource§unsafe fn connect_unsafe_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F,
) -> SignalHandlerId
unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
Connect to the signal
signal_id on this object. Read moreSource§fn connect_closure(
&self,
signal_name: &str,
after: bool,
closure: RustClosure,
) -> SignalHandlerId
fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure, ) -> SignalHandlerId
Connect a closure to the signal
signal_name on this object. Read moreSource§fn connect_closure_id(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
closure: RustClosure,
) -> SignalHandlerId
fn connect_closure_id( &self, signal_id: SignalId, details: Option<Quark>, after: bool, closure: RustClosure, ) -> SignalHandlerId
Connect a closure to the signal
signal_id on this object. Read moreSource§fn watch_closure(&self, closure: &impl AsRef<Closure>)
fn watch_closure(&self, closure: &impl AsRef<Closure>)
Limits the lifetime of
closure to the lifetime of the object. When
the object’s reference count drops to zero, the closure will be
invalidated. An invalidated closure will ignore any calls to
invoke_with_values, or
invoke when using Rust closures.Source§fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
Emit signal by signal id. Read more
Source§fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
Same as
Self::emit but takes Value for the arguments.Source§fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
Emit signal by its name. Read more
Source§fn emit_by_name_with_values(
&self,
signal_name: &str,
args: &[Value],
) -> Option<Value>
fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value], ) -> Option<Value>
Emit signal by its name. Read more
Source§fn emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
Emit signal by its name with details. Read more
Source§fn emit_by_name_with_details_and_values(
&self,
signal_name: &str,
details: Quark,
args: &[Value],
) -> Option<Value>
fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value], ) -> Option<Value>
Emit signal by its name with details. Read more
Source§fn emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
Emit signal by signal id with details. Read more
Source§fn emit_with_details_and_values(
&self,
signal_id: SignalId,
details: Quark,
args: &[Value],
) -> Option<Value>
fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value], ) -> Option<Value>
Emit signal by signal id with details. Read more
Source§fn disconnect(&self, handler_id: SignalHandlerId)
fn disconnect(&self, handler_id: SignalHandlerId)
Disconnect a previously connected signal handler.
Source§fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
Connect to the
notify signal of the object. Read moreSource§fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
Connect to the
notify signal of the object. Read moreSource§unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F,
) -> SignalHandlerId
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F, ) -> SignalHandlerId
Connect to the
notify signal of the object. Read moreSource§fn notify(&self, property_name: &str)
fn notify(&self, property_name: &str)
Notify that the given property has changed its value. Read more
Source§fn notify_by_pspec(&self, pspec: &ParamSpec)
fn notify_by_pspec(&self, pspec: &ParamSpec)
Notify that the given property has changed its value. Read more
Source§fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>
fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>
Add a callback to be notified when the Object is disposed.
Source§fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>where
F: FnOnce() + 'static,
fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>where
F: FnOnce() + 'static,
Add a callback to be notified when the Object is disposed. Read more
Source§fn bind_property<'a, 'f, 't, O>(
&'a self,
source_property: &'a str,
target: &'a O,
target_property: &'a str,
) -> BindingBuilder<'a, 'f, 't>where
O: ObjectType,
fn bind_property<'a, 'f, 't, O>(
&'a self,
source_property: &'a str,
target: &'a O,
target_property: &'a str,
) -> BindingBuilder<'a, 'f, 't>where
O: ObjectType,
Source§unsafe fn run_dispose(&self)
unsafe fn run_dispose(&self)
Runs the dispose mechanism of the object. Read more
Source§impl<T> PropertyGet for Twhere
T: HasParamSpec,
impl<T> PropertyGet for Twhere
T: HasParamSpec,
Source§impl<T> StaticTypeExt for Twhere
T: StaticType,
impl<T> StaticTypeExt for Twhere
T: StaticType,
Source§fn ensure_type()
fn ensure_type()
Ensures that the type has been registered with the type system.
Source§impl<T> ToSendValue for T
impl<T> ToSendValue for T
Source§fn to_send_value(&self) -> SendValue
fn to_send_value(&self) -> SendValue
Returns a
SendValue clone of self.