[]Struct gstreamer::Pipeline

pub struct Pipeline(_, _);

A Pipeline is a special Bin used as the toplevel container for the filter graph. The Pipeline will manage the selection and distribution of a global Clock as well as provide a Bus to the application.

Pipeline::new is used to create a pipeline. when you are done with the pipeline, use GstObjectExt::unref to free its resources including all added Element objects (if not otherwise referenced).

Elements are added and removed from the pipeline using the Bin methods like GstBinExt::add and GstBinExt::remove (see Bin).

Before changing the state of the Pipeline (see Element) a Bus can be retrieved with Pipeline::get_bus. This bus can then be used to receive Message from the elements in the pipeline.

By default, a Pipeline will automatically flush the pending Bus messages when going to the NULL state to ensure that no circular references exist when no messages are read from the Bus. This behaviour can be changed with PipelineExt::set_auto_flush_bus.

When the Pipeline performs the PAUSED to PLAYING state change it will select a clock for the elements. The clock selection algorithm will by default select a clock provided by an element that is most upstream (closest to the source). For live pipelines (ones that return StateChangeReturn::NoPreroll from the Element::set_state call) this will select the clock provided by the live source. For normal pipelines this will select a clock provided by the sinks (most likely the audio sink). If no element provides a clock, a default SystemClock is used.

The clock selection can be controlled with the PipelineExt::use_clock method, which will enforce a given clock on the pipeline. With PipelineExt::auto_clock the default clock selection algorithm can be restored.

A Pipeline maintains a running time for the elements. The running time is defined as the difference between the current clock time and the base time. When the pipeline goes to READY or a flushing seek is performed on it, the running time is reset to 0. When the pipeline is set from PLAYING to PAUSED, the current clock time is sampled and used to configure the base time for the elements when the pipeline is set to PLAYING again. The effect is that the running time (as the difference between the clock time and the base time) will count how much time was spent in the PLAYING state. This default behaviour can be changed with the ElementExt::set_start_time method.

Implements

PipelineExt, GstBinExt, ElementExt, GstObjectExt, glib::object::ObjectExt, ChildProxyExt

Methods

impl Pipeline[src]

pub fn new(name: Option<&str>) -> Pipeline[src]

Create a new pipeline with the given name.

name

name of new pipeline

Returns

newly created GstPipeline

MT safe.

Trait Implementations

impl Clone for Pipeline

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

Performs copy-assignment from source. Read more

impl Eq for Pipeline

impl Ord for Pipeline

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

Compares and returns the maximum of two values. Read more

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

Compares and returns the minimum of two values. Read more

fn clamp(self, min: Self, max: Self) -> Self[src]

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

Restrict a value to a certain interval. Read more

impl Sync for Pipeline[src]

impl Send for Pipeline[src]

impl<T: ObjectType> PartialEq<T> for Pipeline

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

This method tests for !=.

impl<T: ObjectType> PartialOrd<T> for Pipeline

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

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

impl Debug for Pipeline

impl Hash for Pipeline

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 IsA<Bin> for Pipeline

impl IsA<Element> for Pipeline

impl IsA<Object> for Pipeline

impl IsA<ChildProxy> for Pipeline

impl StaticType for Pipeline

Blanket Implementations

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

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

type Owned = T

The resulting type after obtaining ownership.

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

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

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

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

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

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

impl<T> Any for T where
    T: 'static + ?Sized
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impl<'a, T> ToGlibContainerFromSlice<'a, *mut GList> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
[src]

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
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impl<'a, T> ToGlibContainerFromSlice<'a, *const GList> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
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impl<T> Cast for T where
    T: ObjectType
[src]

fn upcast<T>(self) -> T where
    Self: IsA<T>,
    T: ObjectType
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Upcasts an object to a superclass or interface T. Read more

fn upcast_ref<T>(&self) -> &T where
    Self: IsA<T>,
    T: ObjectType
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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
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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
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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<Super, Sub> CanDowncast<Sub> for Super where
    Sub: IsA<Super>,
    Super: IsA<Super>, 
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impl<T> ObjectExt for T where
    T: ObjectType
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impl<T> ToValue for T where
    T: SetValue + ?Sized
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impl<T> ToSendValue for T where
    T: ToValue + SetValue + Send + ?Sized
[src]