[−][src]Trait gstreamer_base::AggregatorExt

pub trait AggregatorExt: 'static {
    fn get_buffer_pool(&self) -> Option<BufferPool>;

    fn get_latency(&self) -> ClockTime;

    fn negotiate(&self) -> bool;

    fn peek_next_sample<P: IsA<AggregatorPad>>(&self, pad: &P) -> Option<Sample>;

    fn set_latency(&self, min_latency: ClockTime, max_latency: ClockTime);

    fn set_src_caps(&self, caps: &Caps);

    fn simple_get_next_time(&self) -> ClockTime;

    fn get_property_emit_signals(&self) -> bool;

    fn set_property_emit_signals(&self, emit_signals: bool);

    fn get_property_start_time(&self) -> u64;

    fn set_property_start_time(&self, start_time: u64);

    fn get_property_start_time_selection(&self) -> AggregatorStartTimeSelection;

    fn set_property_start_time_selection(
        &self, 
        start_time_selection: AggregatorStartTimeSelection
    );

    fn connect_property_emit_signals_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self, 
        f: F
    ) -> SignalHandlerId;

    fn connect_property_latency_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self, 
        f: F
    ) -> SignalHandlerId;

    fn connect_property_start_time_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self, 
        f: F
    ) -> SignalHandlerId;

    fn connect_property_start_time_selection_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self, 
        f: F
    ) -> SignalHandlerId;
}

Trait containing all Aggregator methods.

Feature: v1_14

Implementors

Aggregator

Required methods

fn get_buffer_pool(&self) -> Option<BufferPool>

Feature: v1_14

Returns

the instance of the gst::BufferPool used by trans; free it after use it

fn get_latency(&self) -> ClockTime

Retrieves the latency values reported by self in response to the latency query, or GST_CLOCK_TIME_NONE if there is not live source connected and the element will not wait for the clock.

Typically only called by subclasses.

Feature: v1_14

Returns

The latency or GST_CLOCK_TIME_NONE if the element does not sync

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 AggregatorClass.negotiate() fails.

Feature: v1_18

Returns

true if the negotiation succeeded, else false.

fn peek_next_sample<P: IsA<AggregatorPad>>(&self, pad: &P) -> Option<Sample>

fn set_latency(&self, min_latency: ClockTime, max_latency: ClockTime)

Lets Aggregator sub-classes tell the baseclass what their internal latency is. Will also post a LATENCY message on the bus so the pipeline can reconfigure its global latency.

Feature: v1_14

min_latency

minimum latency

max_latency

maximum latency

fn set_src_caps(&self, caps: &Caps)

Sets the caps to be used on the src pad.

Feature: v1_14

caps

The gst::Caps to set on the src pad.

fn simple_get_next_time(&self) -> ClockTime

This is a simple AggregatorClass.get_next_time() implementation that just looks at the gst::Segment on the srcpad of the aggregator and bases the next time on the running time there.

This is the desired behaviour in most cases where you have a live source and you have a dead line based aggregator subclass.

Feature: v1_16

Returns

The running time based on the position

fn get_property_emit_signals(&self) -> bool

fn set_property_emit_signals(&self, emit_signals: bool)

fn get_property_start_time(&self) -> u64

fn set_property_start_time(&self, start_time: u64)

fn get_property_start_time_selection(&self) -> AggregatorStartTimeSelection

fn set_property_start_time_selection(
    &self,
    start_time_selection: AggregatorStartTimeSelection
)

fn connect_property_emit_signals_notify<F: Fn(&Self) + Send + Sync + 'static>(
    &self,
    f: F
) -> SignalHandlerId

fn connect_property_latency_notify<F: Fn(&Self) + Send + Sync + 'static>(
    &self,
    f: F
) -> SignalHandlerId

fn connect_property_start_time_notify<F: Fn(&Self) + Send + Sync + 'static>(
    &self,
    f: F
) -> SignalHandlerId

fn connect_property_start_time_selection_notify<F: Fn(&Self) + Send + Sync + 'static>(
    &self,
    f: F
) -> SignalHandlerId

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Implementors

impl<O: IsA<Aggregator>> AggregatorExt for O[src]

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