Struct gstreamer_video::VideoDecoder[−][src]

pub struct VideoDecoder(_);

This base class is for video decoders turning encoded data into raw video frames.

The GstVideoDecoder base class and derived subclasses should cooperate as follows:

Configuration

Initially, GstVideoDecoder calls start when the decoder element is activated, which allows the subclass to perform any global setup.
GstVideoDecoder calls set_format to inform the subclass of caps describing input video data that it is about to receive, including possibly configuration data. While unlikely, it might be called more than once, if changing input parameters require reconfiguration.
Incoming data buffers are processed as needed, described in Data Processing below.
GstVideoDecoder calls stop at end of all processing.

Data processing

The base class gathers input data, and optionally allows subclass to parse this into subsequently manageable chunks, typically corresponding to and referred to as ‘frames’.
Each input frame is provided in turn to the subclass’ handle_frame callback. The ownership of the frame is given to the handle_frame callback.
If codec processing results in decoded data, the subclass should call [Self::finish_frame] to have decoded data pushed. downstream. Otherwise, the subclass must call [Self::drop_frame], to allow the base class to do timestamp and offset tracking, and possibly to requeue the frame for a later attempt in the case of reverse playback.

Shutdown phase

The GstVideoDecoder class calls stop to inform the subclass that data parsing will be stopped.

Additional Notes

Seeking/Flushing
When the pipeline is seeked or otherwise flushed, the subclass is informed via a call to its reset callback, with the hard parameter set to true. This indicates the subclass should drop any internal data queues and timestamps and prepare for a fresh set of buffers to arrive for parsing and decoding.
End Of Stream
At end-of-stream, the subclass parse function may be called some final times with the at_eos parameter set to true, indicating that the element should not expect any more data to be arriving, and it should parse and remaining frames and call crate::prelude::VideoDecoderExt::have_frame() if possible.

The subclass is responsible for providing pad template caps for source and sink pads. The pads need to be named “sink” and “src”. It also needs to provide information about the output caps, when they are known. This may be when the base class calls the subclass’ set_format function, though it might be during decoding, before calling [Self::finish_frame]. This is done via [Self::set_output_state]

The subclass is also responsible for providing (presentation) timestamps (likely based on corresponding input ones). If that is not applicable or possible, the base class provides limited framerate based interpolation.

Similarly, the base class provides some limited (legacy) seeking support if specifically requested by the subclass, as full-fledged support should rather be left to upstream demuxer, parser or alike. This simple approach caters for seeking and duration reporting using estimated input bitrates. To enable it, a subclass should call crate::prelude::VideoDecoderExt::set_estimate_rate (XXX: @-reference does not belong to VideoDecoder!) to enable handling of incoming byte-streams.

The base class provides some support for reverse playback, in particular in case incoming data is not packetized or upstream does not provide fragments on keyframe boundaries. However, the subclass should then be prepared for the parsing and frame processing stage to occur separately (in normal forward processing, the latter immediately follows the former), The subclass also needs to ensure the parsing stage properly marks keyframes, unless it knows the upstream elements will do so properly for incoming data.

The bare minimum that a functional subclass needs to implement is:

Provide pad templates
Inform the base class of output caps via [Self::set_output_state]
Parse input data, if it is not considered packetized from upstream Data will be provided to parse which should invoke crate::prelude::VideoDecoderExt::add_to_frame (XXX: @-reference does not belong to VideoDecoder!) and crate::prelude::VideoDecoderExt::have_frame (XXX: @-reference does not belong to VideoDecoder!) to separate the data belonging to each video frame.
Accept data in handle_frame and provide decoded results to [Self::finish_frame], or call [Self::drop_frame].

This is an Abstract Base Class, you cannot instantiate it.

Implements

crate::prelude::VideoDecoderExt, gst::prelude::ElementExt, gst::prelude::ObjectExt, trait@glib::object::ObjectExt, crate::prelude::VideoDecoderExtManual

Trait Implementations

`impl Clone for VideoDecoder`[src]

`fn clone(&self) -> VideoDecoder`[src]

Returns a copy of the value. Read more

`fn clone_from(&mut self, source: &Self)`1.0.0 [src]

Performs copy-assignment from source. Read more

`impl Debug for VideoDecoder`[src]

`fn fmt(&self, f: &mut Formatter<'_>) -> Result`[src]

Formats the value using the given formatter. Read more

`impl Hash for VideoDecoder`[src]

`fn hash<H: Hasher>(&self, state: &mut H)`[src]

Feeds this value into the given Hasher. Read more

`fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,` 1.3.0 [src]

Feeds a slice of this type into the given Hasher. Read more

`impl<T: VideoDecoderImpl> IsSubclassable<T> for VideoDecoder`[src]

`fn class_init(klass: &mut Class<Self>)`[src]

Override the virtual methods of this class for the given subclass and do other class initialization. Read more

`fn instance_init(instance: &mut InitializingObject<T>)`[src]

Instance specific initialization. Read more

`impl Ord for VideoDecoder`[src]

`fn cmp(&self, other: &VideoDecoder) -> Ordering`[src]

This method returns an Ordering between self and other. Read more

`#[must_use] fn max(self, other: Self) -> Self`1.21.0 [src]

Compares and returns the maximum of two values. Read more

`#[must_use] fn min(self, other: Self) -> Self`1.21.0 [src]

Compares and returns the minimum of two values. Read more

`#[must_use] fn clamp(self, min: Self, max: Self) -> Self`1.50.0 [src]

Restrict a value to a certain interval. Read more

`impl ParentClassIs for VideoDecoder`[src]

`type Parent = Element`

`impl<T: ObjectType> PartialEq<T> for VideoDecoder`[src]

`fn eq(&self, other: &T) -> bool`[src]

This method tests for self and other values to be equal, and is used by ==. Read more

`#[must_use] fn ne(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests for !=.

`impl<T: ObjectType> PartialOrd<T> for VideoDecoder`[src]

`fn partial_cmp(&self, other: &T) -> Option<Ordering>`[src]

This method returns an ordering between self and other values if one exists. Read more

`#[must_use] fn lt(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests less than (for self and other) and is used by the < operator. Read more

`#[must_use] fn le(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

`#[must_use] fn gt(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests greater than (for self and other) and is used by the > operator. Read more

`#[must_use] fn ge(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

`impl StaticType for VideoDecoder`[src]

`fn static_type() -> Type`[src]

Returns the type identifier of Self.

`impl Eq for VideoDecoder`[src]

`impl IsA<Element> for VideoDecoder`[src]

`impl IsA<Object> for VideoDecoder`[src]

`impl Send for VideoDecoder`[src]

`impl StructuralEq for VideoDecoder`[src]

`impl Sync for VideoDecoder`[src]

Auto Trait Implementations

`impl RefUnwindSafe for VideoDecoder`

`impl Unpin for VideoDecoder`

`impl UnwindSafe for VideoDecoder`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

Gets the TypeId of self. Read more

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

`impl<T> Cast for T where T: ObjectType,` [src]

`fn upcast<T>(self) -> T where Self: IsA<T>, T: ObjectType,` [src]

Upcasts an object to a superclass or interface T. Read more

`fn upcast_ref<T>(&self) -> &T where Self: IsA<T>, T: ObjectType,` [src]

Upcasts an object to a reference of its superclass or interface T. Read more

`fn downcast<T>(self) -> Result<T, Self> where Self: CanDowncast<T>, T: ObjectType,` [src]

Tries to downcast to a subclass or interface implementor T. Read more

`fn downcast_ref<T>(&self) -> Option<&T> where Self: CanDowncast<T>, T: ObjectType,` [src]

Tries to downcast to a reference of its subclass or interface implementor T. Read more

`fn dynamic_cast<T>(self) -> Result<T, Self> where T: ObjectType,` [src]

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 downcast and upcast will do many checks at compile-time already. Read more

`fn dynamic_cast_ref<T>(&self) -> Option<&T> where T: ObjectType,` [src]

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 more

`unsafe fn unsafe_cast<T>(self) -> T where T: ObjectType,` [src]

Casts to T unconditionally. Read more

`unsafe fn unsafe_cast_ref<T>(&self) -> &T where T: ObjectType,` [src]

Casts to &T unconditionally. Read more

`impl<O> ElementExt for O where O: IsA<Element>,` [src]

`pub fn abort_state(&self)`[src]

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

`pub fn add_pad(&self, pad: &P) -> Result<(), BoolError> where P: IsA<Pad>,` [src]

Adds a pad (link point) to self. pad’s parent will be set to self; see crate::prelude::GstObjectExt::set_parent() for refcounting information. Read more

`pub fn change_state( &self, transition: StateChange ) -> Result<StateChangeSuccess, StateChangeError>`[src]

Perform transition on self. Read more

`pub fn continue_state( &self, ret: impl Into<StateChangeReturn> ) -> Result<StateChangeSuccess, StateChangeError>`[src]

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 crate::StateChangeReturn::Success from the state change function. Read more

`pub fn create_all_pads(&self)`[src]

`pub fn foreach_pad(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool,` [src]

This is supported on crate feature v1_14 only.

`pub fn foreach_sink_pad(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool,` [src]

This is supported on crate feature v1_14 only.

`pub fn foreach_src_pad(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool,` [src]

This is supported on crate feature v1_14 only.

`pub fn base_time(&self) -> ClockTime`[src]

`pub fn bus(&self) -> Option<Bus>`[src]

`pub fn clock(&self) -> Option<Clock>`[src]

`pub fn compatible_pad(&self, pad: &P, caps: Option<&Caps>) -> Option<Pad> where P: IsA<Pad>,` [src]

`pub fn compatible_pad_template( &self, compattempl: &PadTemplate ) -> Option<PadTemplate>`[src]

`pub fn context(&self, context_type: &str) -> Option<Context>`[src]

`pub fn contexts(&self) -> Vec<Context, Global>`[src]

`pub fn factory(&self) -> Option<ElementFactory>`[src]

`pub fn request_pad_simple(&self, name: &str) -> Option<Pad>`[src]

`pub fn start_time(&self) -> ClockTime`[src]

`pub fn state( &self, timeout: ClockTime ) -> (Result<StateChangeSuccess, StateChangeError>, State, State)`[src]

`pub fn static_pad(&self, name: &str) -> Option<Pad>`[src]

`pub fn is_locked_state(&self) -> bool`[src]

`pub fn link(&self, dest: &P) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_filtered( &self, dest: &P, filter: Option<&Caps> ) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_pads( &self, srcpadname: Option<&str>, dest: &P, destpadname: Option<&str> ) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_pads_filtered( &self, srcpadname: Option<&str>, dest: &P, destpadname: Option<&str>, filter: Option<&Caps> ) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_pads_full( &self, srcpadname: Option<&str>, dest: &P, destpadname: Option<&str>, flags: PadLinkCheck ) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn lost_state(&self)`[src]

`pub fn no_more_pads(&self)`[src]

`pub fn provide_clock(&self) -> Option<Clock>`[src]

`pub fn release_request_pad(&self, pad: &P) where P: IsA<Pad>,` [src]

`pub fn remove_pad(&self, pad: &P) -> Result<(), BoolError> where P: IsA<Pad>,` [src]

`pub fn request_pad( &self, templ: &PadTemplate, name: Option<&str>, caps: Option<&Caps> ) -> Option<Pad>`[src]

`pub fn set_base_time(&self, time: ClockTime)`[src]

`pub fn set_bus(&self, bus: Option<&Bus>)`[src]

`pub fn set_clock(&self, clock: Option<&P>) -> Result<(), BoolError> where P: IsA<Clock>,` [src]

`pub fn set_context(&self, context: &Context)`[src]

`pub fn set_locked_state(&self, locked_state: bool) -> bool`[src]

`pub fn set_start_time(&self, time: ClockTime)`[src]

`pub fn set_state( &self, state: State ) -> Result<StateChangeSuccess, StateChangeError>`[src]

`pub fn sync_state_with_parent(&self) -> Result<(), BoolError>`[src]

`pub fn unlink(&self, dest: &P) where P: IsA<Element>,` [src]

`pub fn unlink_pads(&self, srcpadname: &str, dest: &P, destpadname: &str) where P: IsA<Element>,` [src]

`pub fn connect_no_more_pads<F>(&self, f: F) -> SignalHandlerId where F: 'static + Fn(&O) + Send + Sync,` [src]

`pub fn connect_pad_added<F>(&self, f: F) -> SignalHandlerId where F: 'static + Fn(&O, &Pad) + Send + Sync,` [src]

`pub fn connect_pad_removed<F>(&self, f: F) -> SignalHandlerId where F: 'static + Fn(&O, &Pad) + Send + Sync,` [src]

`impl<O> ElementExtManual for O where O: IsA<Element>,` [src]

`pub fn element_class(&self) -> &Class<Element>`[src]

`pub fn current_state(&self) -> State`[src]

`pub fn pending_state(&self) -> State`[src]

`pub fn query(&self, query: &mut QueryRef) -> bool`[src]

`pub fn send_event(&self, event: Event) -> bool`[src]

`pub fn metadata<'a>(&self, key: &str) -> Option<&'a str>`[src]

`pub fn pad_template(&self, name: &str) -> Option<PadTemplate>`[src]

`pub fn pad_template_list(&self) -> Vec<PadTemplate, Global>`[src]

`pub fn set_element_flags(&self, flags: ElementFlags)`[src]

`pub fn unset_element_flags(&self, flags: ElementFlags)`[src]

`pub fn element_flags(&self) -> ElementFlags`[src]

`pub fn message_full<T>( &self, type_: ElementMessageType, code: T, message: Option<&str>, debug: Option<&str>, file: &str, function: &str, line: u32 ) where T: MessageErrorDomain,` [src]

`pub 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,` [src]

This is supported on crate feature v1_10 only.

`pub fn post_message(&self, message: Message) -> Result<(), BoolError>`[src]

`pub fn post_error_message(&self, msg: ErrorMessage)`[src]

`pub fn iterate_pads(&self) -> Iterator<Pad>`[src]

`pub fn iterate_sink_pads(&self) -> Iterator<Pad>`[src]

`pub fn iterate_src_pads(&self) -> Iterator<Pad>`[src]

`pub fn pads(&self) -> Vec<Pad, Global>`[src]

`pub fn sink_pads(&self) -> Vec<Pad, Global>`[src]

`pub fn src_pads(&self) -> Vec<Pad, Global>`[src]

`pub fn num_pads(&self) -> u16`[src]

`pub fn num_sink_pads(&self) -> u16`[src]

`pub fn num_src_pads(&self) -> u16`[src]

`pub fn add_property_deep_notify_watch( &self, property_name: Option<&str>, include_value: bool ) -> NotifyWatchId`[src]

This is supported on crate feature v1_10 only.

`pub fn add_property_notify_watch( &self, property_name: Option<&str>, include_value: bool ) -> NotifyWatchId`[src]

This is supported on crate feature v1_10 only.

`pub fn remove_property_notify_watch(&self, watch_id: NotifyWatchId)`[src]

This is supported on crate feature v1_10 only.

`pub fn query_convert<V, U>(&self, src_val: V) -> Option where V: Into<GenericFormattedValue>, U: SpecificFormattedValue,` [src]

`pub fn query_convert_generic<V>( &self, src_val: V, dest_format: Format ) -> Option<GenericFormattedValue> where V: Into<GenericFormattedValue>,` [src]

`pub fn query_duration<T>(&self) -> Option<T> where T: SpecificFormattedValue,` [src]

`pub fn query_duration_generic( &self, format: Format ) -> Option<GenericFormattedValue>`[src]

`pub fn query_position<T>(&self) -> Option<T> where T: SpecificFormattedValue,` [src]

`pub fn query_position_generic( &self, format: Format ) -> Option<GenericFormattedValue>`[src]

`pub fn seek<V>( &self, rate: f64, flags: SeekFlags, start_type: SeekType, start: V, stop_type: SeekType, stop: V ) -> Result<(), BoolError> where V: Into<GenericFormattedValue>,` [src]

`pub fn seek_simple<V>( &self, seek_flags: SeekFlags, seek_pos: V ) -> Result<(), BoolError> where V: Into<GenericFormattedValue>,` [src]

`pub fn call_async<F>(&self, func: F) where F: FnOnce(&O) + Send + 'static,` [src]

This is supported on crate feature v1_10 only.

`pub fn call_async_future<F, T>( &self, func: F ) -> Pin<Box<dyn Future<Output = T> + 'static + Send, Global>> where F: FnOnce(&O) -> T + Send + 'static, T: Send + 'static,` [src]

This is supported on crate feature v1_10 only.

`pub fn current_running_time(&self) -> ClockTime`[src]

`pub fn current_clock_time(&self) -> ClockTime`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

Performs the conversion.

`impl<O> GObjectExtManualGst for O where O: IsA<Object>,` [src]

`pub fn set_property_from_str(&self, name: &str, value: &str)`[src]

`impl<O> GstObjectExt for O where O: IsA<Object>,` [src]

`pub fn add_control_binding(&self, binding: &P) -> Result<(), BoolError> where P: IsA<ControlBinding>,` [src]

Attach the crate::ControlBinding to the object. If there already was a crate::ControlBinding for this property it will be replaced. Read more

`pub fn default_error(&self, error: &Error, debug: Option<&str>)`[src]

A default error function that uses g_printerr() to display the error message and the optional debug string.. Read more

`pub fn control_binding(&self, property_name: &str) -> Option<ControlBinding>`[src]

Gets the corresponding crate::ControlBinding for the property. This should be unreferenced again after use. Read more

`pub fn control_rate(&self) -> ClockTime`[src]

Obtain the control-rate for this self. Audio processing crate::Element objects will use this rate to sub-divide their processing loop and call Self::sync_values() in between. The length of the processing segment should be up to control-rate nanoseconds. Read more

`pub fn name(&self) -> GString`[src]

Returns a copy of the name of self. Caller should g_free() the return value after usage. For a nameless object, this returns None, which you can safely g_free() as well. Read more

`pub fn parent(&self) -> Option<Object>`[src]

Returns the parent of self. This function increases the refcount of the parent object so you should [Self::unref()] it after usage. Read more

`pub fn path_string(&self) -> GString`[src]

Generates a string describing the path of self in the object hierarchy. Only useful (or used) for debugging. Read more

`pub fn value(&self, property_name: &str, timestamp: ClockTime) -> Option<Value>`[src]

Gets the value for the given controlled property at the requested time. Read more

`pub fn has_active_control_bindings(&self) -> bool`[src]

Check if the self has active controlled properties. Read more

`pub fn has_ancestor(&self, ancestor: &P) -> bool where P: IsA<Object>,` [src]

Check if self has an ancestor ancestor somewhere up in the hierarchy. One can e.g. check if a crate::Element is inside a crate::Pipeline. Read more

`pub fn has_as_ancestor(&self, ancestor: &P) -> bool where P: IsA<Object>,` [src]

Check if self has an ancestor ancestor somewhere up in the hierarchy. One can e.g. check if a crate::Element is inside a crate::Pipeline. Read more

`pub fn has_as_parent(&self, parent: &P) -> bool where P: IsA<Object>,` [src]

Check if parent is the parent of self. E.g. a crate::Element can check if it owns a given crate::Pad. Read more

`pub fn remove_control_binding(&self, binding: &P) -> bool where P: IsA<ControlBinding>,` [src]

Removes the corresponding crate::ControlBinding. If it was the last ref of the binding, it will be disposed. Read more

`pub fn set_control_binding_disabled(&self, property_name: &str, disabled: bool)`[src]

This function is used to disable the control bindings on a property for some time, i.e. Self::sync_values() will do nothing for the property. Read more

`pub fn set_control_bindings_disabled(&self, disabled: bool)`[src]

This function is used to disable all controlled properties of the self for some time, i.e. Self::sync_values() will do nothing. Read more

`pub fn set_control_rate(&self, control_rate: ClockTime)`[src]

Change the control-rate for this self. Audio processing crate::Element objects will use this rate to sub-divide their processing loop and call Self::sync_values() in between. The length of the processing segment should be up to control-rate nanoseconds. Read more

`pub fn set_parent(&self, parent: &P) -> Result<(), BoolError> where P: IsA<Object>,` [src]

Sets the parent of self to parent. The object’s reference count will be incremented, and any floating reference will be removed (see [crate::Object::ref_sink()]). Read more

`pub fn suggest_next_sync(&self) -> ClockTime`[src]

Returns a suggestion for timestamps where buffers should be split to get best controller results. Read more

`pub fn sync_values(&self, timestamp: ClockTime) -> Result<(), BoolError>`[src]

Sets the properties of the object, according to the GstControlSources that (maybe) handle them and for the given timestamp. Read more

`pub fn unparent(&self)`[src]

Clear the parent of self, removing the associated reference. This function decreases the refcount of self. Read more

`pub fn connect_parent_notify<F>(&self, f: F) -> SignalHandlerId where F: 'static + Fn(&O) + Send + Sync,` [src]

`impl<O> GstObjectExtManual for O where O: IsA<Object>,` [src]

`pub fn connect_deep_notify<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId where F: 'static + Fn(&O, &Object, &ParamSpec) + Send + Sync,` [src]

`pub fn set_object_flags(&self, flags: ObjectFlags)`[src]

`pub fn unset_object_flags(&self, flags: ObjectFlags)`[src]

`pub fn object_flags(&self) -> ObjectFlags`[src]

`pub fn g_value_array( &self, property_name: &str, timestamp: ClockTime, interval: ClockTime, values: &mut [Value] ) -> Result<(), BoolError>`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

Performs the conversion.

`impl<T> ObjectExt for T where T: ObjectType,` [src]

`pub fn is(&self) -> bool where U: StaticType,` [src]

Returns true if the object is an instance of (can be cast to) T.

`pub fn type_(&self) -> Type`[src]

`pub fn object_class(&self) -> &Class<Object>`[src]

`pub fn class(&self) -> &Class<T> where T: IsClass,` [src]

`pub fn class_of(&self) -> Option<&Class> where U: IsClass,` [src]

`pub fn interface(&self) -> Option<InterfaceRef<'_, U>> where U: IsInterface,` [src]

`pub fn set_properties( &self, property_values: &[(&str, &dyn ToValue)] ) -> Result<(), BoolError>`[src]

`pub fn set_properties_from_value( &self, property_values: &[(&str, Value)] ) -> Result<(), BoolError>`[src]

`pub fn set_property<'a, N, V>( &self, property_name: N, value: V ) -> Result<(), BoolError> where V: ToValue, N: Into<&'a str>,` [src]

`pub fn set_property_from_value<'a, N>( &self, property_name: N, value: &Value ) -> Result<(), BoolError> where N: Into<&'a str>,` [src]

`pub fn property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where N: Into<&'a str>,` [src]

`pub unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where QD: 'static,` [src]

Safety Read more

`pub unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>> where QD: 'static,` [src]

Safety Read more

`pub unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where QD: 'static,` [src]

Safety Read more

`pub unsafe fn set_data<QD>(&self, key: &str, value: QD) where QD: 'static,` [src]

Safety Read more

`pub unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>> where QD: 'static,` [src]

Safety Read more

`pub unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where QD: 'static,` [src]

Safety Read more

`pub fn block_signal(&self, handler_id: &SignalHandlerId)`[src]

`pub fn unblock_signal(&self, handler_id: &SignalHandlerId)`[src]

`pub fn stop_signal_emission(&self, signal_name: &str)`[src]

`pub fn disconnect(&self, handler_id: SignalHandlerId)`[src]

`pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where F: 'static + Fn(&T, &ParamSpec) + Send + Sync,` [src]

`pub fn connect_notify_local<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId where F: 'static + Fn(&T, &ParamSpec),` [src]

`pub unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId where F: Fn(&T, &ParamSpec),` [src]

`pub fn notify<'a, N>(&self, property_name: N) where N: Into<&'a str>,` [src]

`pub fn notify_by_pspec(&self, pspec: &ParamSpec)`[src]

`pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where N: Into<&'a str>,` [src]

`pub fn property_type<'a, N>(&self, property_name: N) -> Option<Type> where N: Into<&'a str>,` [src]

`pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where N: Into<&'a str>,` [src]

`pub fn list_properties(&self) -> Vec<ParamSpec, Global>`[src]

`pub fn connect<'a, N, F>( &self, signal_name: N, after: bool, callback: F ) -> Result<SignalHandlerId, BoolError> where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static, N: Into<&'a str>,` [src]

`pub fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> Result<SignalHandlerId, BoolError> where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,` [src]

Same as connect but takes a SignalId instead of a signal name.

`pub fn connect_local<'a, N, F>( &self, signal_name: N, after: bool, callback: F ) -> Result<SignalHandlerId, BoolError> where F: Fn(&[Value]) -> Option<Value> + 'static, N: Into<&'a str>,` [src]

`pub fn connect_local_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> Result<SignalHandlerId, BoolError> where F: Fn(&[Value]) -> Option<Value> + 'static,` [src]

Same as connect_local but takes a SignalId instead of a signal name.

`pub unsafe fn connect_unsafe<'a, N, F>( &self, signal_name: N, after: bool, callback: F ) -> Result<SignalHandlerId, BoolError> where F: Fn(&[Value]) -> Option<Value>, N: Into<&'a str>,` [src]

`pub unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> Result<SignalHandlerId, BoolError> where F: Fn(&[Value]) -> Option<Value>,` [src]

Same as connect_unsafe but takes a SignalId instead of a signal name.

`pub fn emit( &self, signal_id: SignalId, args: &[&dyn ToValue] ) -> Result<Option<Value>, BoolError>`[src]

Emit signal by signal id.

`pub fn emit_with_details( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> Result<Option<Value>, BoolError>`[src]

Emit signal with details by signal id.

`pub fn emit_by_name<'a, N>( &self, signal_name: N, args: &[&dyn ToValue] ) -> Result<Option<Value>, BoolError> where N: Into<&'a str>,` [src]

Emit signal by it’s name.

`pub fn downgrade(&self) -> WeakRef<T>`[src]

`pub fn bind_property<'a, O, N, M>( &'a self, source_property: N, target: &'a O, target_property: M ) -> BindingBuilder<'a> where O: ObjectType, N: Into<&'a str>, M: Into<&'a str>,` [src]

`pub fn ref_count(&self) -> u32`[src]

`pub fn emit_with_values( &self, signal_id: SignalId, args: &[Value] ) -> Result<Option<Value>, BoolError>`[src]

Same as emit but takes Value for the arguments.

`pub fn emit_by_name_with_values<'a, N>( &self, signal_name: N, args: &[Value] ) -> Result<Option<Value>, BoolError> where N: Into<&'a str>,` [src]

Same as emit_by_name but takes Value for the arguments.

`pub fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Result<Option<Value>, BoolError>`[src]

Same as emit_with_details but takes Value for the arguments.

`impl<T> ToOwned for T where T: Clone,` [src]

`type Owned = T`

The resulting type after obtaining ownership.

`pub fn to_owned(&self) -> T`[src]

Creates owned data from borrowed data, usually by cloning. Read more

`pub fn clone_into(&self, target: &mut T)`[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

`impl<T> ToSendValue for T where T: Send + ToValue + ?Sized,` [src]

`pub fn to_send_value(&self) -> SendValue`[src]

Returns a SendValue clone of self.

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>`[src]

Performs the conversion.

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

`pub fn try_into(self) -> Result<U, >::Error>`[src]

Performs the conversion.

Struct gstreamer_video::VideoDecoder⎘[−][src]

Configuration

Data processing

Shutdown phase

Additional Notes

Implements

Trait Implementations

impl Clone for VideoDecoder[src]

fn clone(&self) -> VideoDecoder[src]

fn clone_from(&mut self, source: &Self)1.0.0[src]

impl Debug for VideoDecoder[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

impl Hash for VideoDecoder[src]

fn hash<__H: Hasher>(&self, state: &mut __H)[src]

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher, 1.3.0[src]

impl<T: VideoDecoderImpl> IsSubclassable<T> for VideoDecoder[src]

fn class_init(klass: &mut Class<Self>)[src]

fn instance_init(instance: &mut InitializingObject<T>)[src]

impl Ord for VideoDecoder[src]

fn cmp(&self, other: &VideoDecoder) -> Ordering[src]

#[must_use]fn max(self, other: Self) -> Self1.21.0[src]

#[must_use]fn min(self, other: Self) -> Self1.21.0[src]

#[must_use]fn clamp(self, min: Self, max: Self) -> Self1.50.0[src]

impl ParentClassIs for VideoDecoder[src]

type Parent = Element

impl<T: ObjectType> PartialEq<T> for VideoDecoder[src]

fn eq(&self, other: &T) -> bool[src]

#[must_use]fn ne(&self, other: &Rhs) -> bool1.0.0[src]

impl<T: ObjectType> PartialOrd<T> for VideoDecoder[src]

fn partial_cmp(&self, other: &T) -> Option<Ordering>[src]

#[must_use]fn lt(&self, other: &Rhs) -> bool1.0.0[src]

#[must_use]fn le(&self, other: &Rhs) -> bool1.0.0[src]

#[must_use]fn gt(&self, other: &Rhs) -> bool1.0.0[src]

#[must_use]fn ge(&self, other: &Rhs) -> bool1.0.0[src]

impl StaticType for VideoDecoder[src]

fn static_type() -> Type[src]

impl Eq for VideoDecoder[src]

impl IsA<Element> for VideoDecoder[src]

impl IsA<Object> for VideoDecoder[src]

impl Send for VideoDecoder[src]

impl StructuralEq for VideoDecoder[src]

impl Sync for VideoDecoder[src]

Auto Trait Implementations

impl RefUnwindSafe for VideoDecoder

impl Unpin for VideoDecoder

impl UnwindSafe for VideoDecoder

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

impl<T> Cast for T where T: ObjectType, [src]

fn upcast<T>(self) -> T where Self: IsA<T>, T: ObjectType, [src]

fn upcast_ref<T>(&self) -> &T where Self: IsA<T>, T: ObjectType, [src]

fn downcast<T>(self) -> Result<T, Self> where Self: CanDowncast<T>, T: ObjectType, [src]

fn downcast_ref<T>(&self) -> Option<&T> where Self: CanDowncast<T>, T: ObjectType, [src]

fn dynamic_cast<T>(self) -> Result<T, Self> where T: ObjectType, [src]

fn dynamic_cast_ref<T>(&self) -> Option<&T> where T: ObjectType, [src]

unsafe fn unsafe_cast<T>(self) -> T where T: ObjectType, [src]

unsafe fn unsafe_cast_ref<T>(&self) -> &T where T: ObjectType, [src]

impl<O> ElementExt for O where O: IsA<Element>, [src]

pub fn abort_state(&self)[src]

pub fn add_pad<P>(&self, pad: &P) -> Result<(), BoolError> where P: IsA<Pad>, [src]

pub fn change_state( &self, transition: StateChange) -> Result<StateChangeSuccess, StateChangeError>[src]

pub fn continue_state( &self, ret: impl Into<StateChangeReturn>) -> Result<StateChangeSuccess, StateChangeError>[src]

pub fn create_all_pads(&self)[src]

pub fn foreach_pad<P>(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool, [src]

pub fn foreach_sink_pad<P>(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool, [src]

pub fn foreach_src_pad<P>(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool, [src]

pub fn base_time(&self) -> ClockTime[src]

pub fn bus(&self) -> Option<Bus>[src]

pub fn clock(&self) -> Option<Clock>[src]

pub fn compatible_pad<P>(&self, pad: &P, caps: Option<&Caps>) -> Option<Pad> where P: IsA<Pad>, [src]

pub fn compatible_pad_template( &self, compattempl: &PadTemplate) -> Option<PadTemplate>[src]

pub fn context(&self, context_type: &str) -> Option<Context>[src]

pub fn contexts(&self) -> Vec<Context, Global>[src]

pub fn factory(&self) -> Option<ElementFactory>[src]

pub fn request_pad_simple(&self, name: &str) -> Option<Pad>[src]

Struct gstreamer_video::VideoDecoder[−][src]

`impl Clone for VideoDecoder`[src]

`fn clone(&self) -> VideoDecoder`[src]

`fn clone_from(&mut self, source: &Self)`1.0.0 [src]

`impl Debug for VideoDecoder`[src]

`fn fmt(&self, f: &mut Formatter<'_>) -> Result`[src]

`impl Hash for VideoDecoder`[src]

`fn hash<H: Hasher>(&self, state: &mut H)`[src]

`fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,` 1.3.0 [src]

`impl<T: VideoDecoderImpl> IsSubclassable<T> for VideoDecoder`[src]

`fn class_init(klass: &mut Class<Self>)`[src]

`fn instance_init(instance: &mut InitializingObject<T>)`[src]

`impl Ord for VideoDecoder`[src]

`fn cmp(&self, other: &VideoDecoder) -> Ordering`[src]

`#[must_use] fn max(self, other: Self) -> Self`1.21.0 [src]

`#[must_use] fn min(self, other: Self) -> Self`1.21.0 [src]

`#[must_use] fn clamp(self, min: Self, max: Self) -> Self`1.50.0 [src]

`impl ParentClassIs for VideoDecoder`[src]

`type Parent = Element`

`impl<T: ObjectType> PartialEq<T> for VideoDecoder`[src]

`fn eq(&self, other: &T) -> bool`[src]

`#[must_use] fn ne(&self, other: &Rhs) -> bool`1.0.0 [src]

`impl<T: ObjectType> PartialOrd<T> for VideoDecoder`[src]

`fn partial_cmp(&self, other: &T) -> Option<Ordering>`[src]

`#[must_use] fn lt(&self, other: &Rhs) -> bool`1.0.0 [src]

`#[must_use] fn le(&self, other: &Rhs) -> bool`1.0.0 [src]

`#[must_use] fn gt(&self, other: &Rhs) -> bool`1.0.0 [src]

`#[must_use] fn ge(&self, other: &Rhs) -> bool`1.0.0 [src]

`impl StaticType for VideoDecoder`[src]

`fn static_type() -> Type`[src]

`impl Eq for VideoDecoder`[src]

`impl IsA<Element> for VideoDecoder`[src]

`impl IsA<Object> for VideoDecoder`[src]

`impl Send for VideoDecoder`[src]

`impl StructuralEq for VideoDecoder`[src]

`impl Sync for VideoDecoder`[src]

`impl RefUnwindSafe for VideoDecoder`

`impl Unpin for VideoDecoder`

`impl UnwindSafe for VideoDecoder`

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> Cast for T where T: ObjectType,` [src]

`fn upcast<T>(self) -> T where Self: IsA<T>, T: ObjectType,` [src]

`fn upcast_ref<T>(&self) -> &T where Self: IsA<T>, T: ObjectType,` [src]

`fn downcast<T>(self) -> Result<T, Self> where Self: CanDowncast<T>, T: ObjectType,` [src]

`fn downcast_ref<T>(&self) -> Option<&T> where Self: CanDowncast<T>, T: ObjectType,` [src]

`fn dynamic_cast<T>(self) -> Result<T, Self> where T: ObjectType,` [src]

`fn dynamic_cast_ref<T>(&self) -> Option<&T> where T: ObjectType,` [src]

`unsafe fn unsafe_cast<T>(self) -> T where T: ObjectType,` [src]

`unsafe fn unsafe_cast_ref<T>(&self) -> &T where T: ObjectType,` [src]

`impl<O> ElementExt for O where O: IsA<Element>,` [src]

`pub fn abort_state(&self)`[src]

`pub fn add_pad<P>(&self, pad: &P) -> Result<(), BoolError> where P: IsA<Pad>,` [src]

`pub fn change_state( &self, transition: StateChange ) -> Result<StateChangeSuccess, StateChangeError>`[src]

`pub fn continue_state( &self, ret: impl Into<StateChangeReturn> ) -> Result<StateChangeSuccess, StateChangeError>`[src]

`pub fn create_all_pads(&self)`[src]

`pub fn foreach_pad<P>(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool,` [src]

`pub fn foreach_sink_pad<P>(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool,` [src]

`pub fn foreach_src_pad<P>(&self, func: P) -> bool where P: FnMut(&Element, &Pad) -> bool,` [src]

`pub fn base_time(&self) -> ClockTime`[src]

`pub fn bus(&self) -> Option<Bus>`[src]

`pub fn clock(&self) -> Option<Clock>`[src]

`pub fn compatible_pad<P>(&self, pad: &P, caps: Option<&Caps>) -> Option<Pad> where P: IsA<Pad>,` [src]

`pub fn compatible_pad_template( &self, compattempl: &PadTemplate ) -> Option<PadTemplate>`[src]

`pub fn context(&self, context_type: &str) -> Option<Context>`[src]

`pub fn contexts(&self) -> Vec<Context, Global>`[src]

`pub fn factory(&self) -> Option<ElementFactory>`[src]

`pub fn request_pad_simple(&self, name: &str) -> Option<Pad>`[src]

`pub fn start_time(&self) -> ClockTime`[src]

`pub fn state( &self, timeout: ClockTime ) -> (Result<StateChangeSuccess, StateChangeError>, State, State)`[src]

`pub fn static_pad(&self, name: &str) -> Option<Pad>`[src]

`pub fn is_locked_state(&self) -> bool`[src]

`pub fn link<P>(&self, dest: &P) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_filtered<P>( &self, dest: &P, filter: Option<&Caps> ) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_pads<P>( &self, srcpadname: Option<&str>, dest: &P, destpadname: Option<&str> ) -> Result<(), BoolError> where P: IsA<Element>,` [src]

`pub fn link_pads_filtered<P>( &self, srcpadname: Option<&str>, dest: &P, destpadname: Option<&str>, filter: Option<&Caps> ) -> Result<(), BoolError> where P: IsA<Element>,` [src]