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 BinExt::add
and BinExt::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 ElementExt::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.
PipelineExt
, BinExt
, ElementExt
, GstObjectExt
, glib::object::ObjectExt
, ChildProxyExt
Create a new pipeline with the given name.
name of new pipeline
newly created GstPipeline
MT safe.
Performs copy-assignment from source
. Read more
Feeds this value into the given [Hasher
]. Read more
Feeds a slice of this type into the given [Hasher
]. Read more
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self | 1.21.0 [src] |
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self | 1.21.0 [src] |
Compares and returns the minimum of two values. Read more
Returns the type identifier of Self
.
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
Formats the value using the given formatter. Read more