Struct gstreamer_app::AppSink

pub struct AppSink { /* private fields */ }

Appsink is a sink plugin that supports many different methods for making the application get a handle on the GStreamer data in a pipeline. Unlike most GStreamer elements, Appsink provides external API functions.

appsink can be used by linking to the gstappsink.h header file to access the methods or by using the appsink action signals and properties.

The normal way of retrieving samples from appsink is by using the pull_sample() and pull_preroll() methods. These methods block until a sample becomes available in the sink or when the sink is shut down or reaches EOS. There are also timed variants of these methods, try_pull_sample() and try_pull_preroll(), which accept a timeout parameter to limit the amount of time to wait.

Appsink will internally use a queue to collect buffers from the streaming thread. If the application is not pulling samples fast enough, this queue will consume a lot of memory over time. The “max-buffers”, “max-time” and “max-bytes” properties can be used to limit the queue size. The “drop” property controls whether the streaming thread blocks or if older buffers are dropped when the maximum queue size is reached. Note that blocking the streaming thread can negatively affect real-time performance and should be avoided.

If a blocking behaviour is not desirable, setting the “emit-signals” property to true will make appsink emit the “new-sample” and “new-preroll” signals when a sample can be pulled without blocking.

The “caps” property on appsink can be used to control the formats that appsink can receive. This property can contain non-fixed caps, the format of the pulled samples can be obtained by getting the sample caps.

If one of the pull-preroll or pull-sample methods return None, the appsink is stopped or in the EOS state. You can check for the EOS state with the “eos” property or with the is_eos() method.

The eos signal can also be used to be informed when the EOS state is reached to avoid polling.

Properties

buffer-list

Readable | Writeable

caps

Readable | Writeable

drop

Readable | Writeable

emit-signals

Readable | Writeable

eos

Readable

max-buffers

Maximum amount of buffers in the queue (0 = unlimited).

Readable | Writeable

max-bytes

Maximum amount of bytes in the queue (0 = unlimited)

Readable | Writeable

max-time

Maximum total duration of data in the queue (0 = unlimited)

Readable | Writeable

wait-on-eos

Wait for all buffers to be processed after receiving an EOS.

In cases where it is uncertain if an appsink will have a consumer for its buffers when it receives an EOS, set to false to ensure that the appsink will not hang.

Readable | Writeable

BaseSink

async

If set to true, the basesink will perform asynchronous state changes. When set to false, the sink will not signal the parent when it prerolls. Use this option when dealing with sparse streams or when synchronisation is not required.

Readable | Writeable

blocksize

The amount of bytes to pull when operating in pull mode.

Readable | Writeable

enable-last-sample

Enable the last-sample property. If false, basesink doesn’t keep a reference to the last buffer arrived and the last-sample property is always set to None. This can be useful if you need buffers to be released as soon as possible, eg. if you’re using a buffer pool.

Readable | Writeable

last-sample

The last buffer that arrived in the sink and was used for preroll or for rendering. This property can be used to generate thumbnails. This property can be None when the sink has not yet received a buffer.

Readable

max-bitrate

Control the maximum amount of bits that will be rendered per second. Setting this property to a value bigger than 0 will make the sink delay rendering of the buffers when it would exceed to max-bitrate.

Readable | Writeable

max-lateness

Readable | Writeable

processing-deadline

Maximum amount of time (in nanoseconds) that the pipeline can take for processing the buffer. This is added to the latency of live pipelines.

Readable | Writeable

qos

Readable | Writeable

render-delay

The additional delay between synchronisation and actual rendering of the media. This property will add additional latency to the device in order to make other sinks compensate for the delay.

Readable | Writeable

stats

Various GstBaseSink statistics. This property returns a gst::Structure with name application/x-gst-base-sink-stats with the following fields:

• “average-rate” G_TYPE_DOUBLE average frame rate
• “dropped” G_TYPE_UINT64 Number of dropped frames
• “rendered” G_TYPE_UINT64 Number of rendered frames

Readable

sync

Readable | Writeable

throttle-time

The time to insert between buffers. This property can be used to control the maximum amount of buffers per second to render. Setting this property to a value bigger than 0 will make the sink create THROTTLE QoS events.

Readable | Writeable

ts-offset

Controls the final synchronisation, a negative value will render the buffer earlier while a positive value delays playback. This property can be used to fix synchronisation in bad files.

Readable | Writeable

Object

name

Readable | Writeable | Construct

parent

The parent of the object. Please note, that when changing the ‘parent’ property, we don’t emit notify and deep-notify signals due to locking issues. In some cases one can use GstBin::element-added or GstBin::element-removed signals on the parent to achieve a similar effect.

Readable | Writeable

Signals

eos

Signal that the end-of-stream has been reached. This signal is emitted from the streaming thread.

new-preroll

Signal that a new preroll sample is available.

This signal is emitted from the streaming thread and only when the “emit-signals” property is true.

The new preroll sample can be retrieved with the “pull-preroll” action signal or AppSink::pull_preroll() either from this signal callback or from any other thread.

Note that this signal is only emitted when the “emit-signals” property is set to true, which it is not by default for performance reasons.

new-sample

Signal that a new sample is available.

This signal is emitted from the streaming thread and only when the “emit-signals” property is true.

The new sample can be retrieved with the “pull-sample” action signal or AppSink::pull_sample() either from this signal callback or from any other thread.

Note that this signal is only emitted when the “emit-signals” property is set to true, which it is not by default for performance reasons.

new-serialized-event

Signal that a new downstream serialized event is available.

This signal is emitted from the streaming thread and only when the “emit-signals” property is true.

The new event can be retrieved with the “try-pull-object” action signal or AppSink::pull_object() either from this signal callback or from any other thread.

EOS will not be notified using this signal, use eos instead. EOS cannot be pulled either, use AppSink::is_eos() to check for it.

Note that this signal is only emitted when the “emit-signals” property is set to true, which it is not by default for performance reasons.

The callback should return true if the event has been handled, which will skip basesink handling of the event, false otherwise.

propose-allocation

Signal that a new propose_allocation query is available.

This signal is emitted from the streaming thread and only when the “emit-signals” property is true.

pull-preroll

Get the last preroll sample in appsink. This was the sample that caused the appsink to preroll in the PAUSED state.

This function is typically used when dealing with a pipeline in the PAUSED state. Calling this function after doing a seek will give the sample right after the seek position.

Calling this function will clear the internal reference to the preroll buffer.

Note that the preroll sample will also be returned as the first sample when calling AppSink::pull_sample() or the “pull-sample” action signal.

If an EOS event was received before any buffers, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

This function blocks until a preroll sample or EOS is received or the appsink element is set to the READY/NULL state.

Action

pull-sample

This function blocks until a sample or EOS becomes available or the appsink element is set to the READY/NULL state.

This function will only return samples when the appsink is in the PLAYING state. All rendered samples will be put in a queue so that the application can pull samples at its own rate.

Note that when the application does not pull samples fast enough, the queued samples could consume a lot of memory, especially when dealing with raw video frames. It’s possible to control the behaviour of the queue with the “drop” and “max-buffers” / “max-bytes” / “max-time” set of properties.

If an EOS event was received before any buffers, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

Action

try-pull-object

This function blocks until a sample or an event becomes available or the appsink element is set to the READY/NULL state or the timeout expires.

This function will only return samples when the appsink is in the PLAYING state. All rendered samples and events will be put in a queue so that the application can pull them at its own rate. Events can be pulled when the appsink is in the READY, PAUSED or PLAYING state.

Note that when the application does not pull samples fast enough, the queued samples could consume a lot of memory, especially when dealing with raw video frames. It’s possible to control the behaviour of the queue with the “drop” and “max-buffers” / “max-bytes” / “max-time” set of properties.

This function will only pull serialized events, excluding the EOS event for which this functions returns None. Use AppSink::is_eos() to check for the EOS condition.

This signal is a variant of try-pull-sample: that can be used to handle incoming events as well as samples.

Note that future releases may extend this API to return other object types so make sure that your code is checking for the actual type it is handling.

Action

try-pull-preroll

Get the last preroll sample in appsink. This was the sample that caused the appsink to preroll in the PAUSED state.

This function is typically used when dealing with a pipeline in the PAUSED state. Calling this function after doing a seek will give the sample right after the seek position.

Calling this function will clear the internal reference to the preroll buffer.

Note that the preroll sample will also be returned as the first sample when calling AppSink::pull_sample() or the “pull-sample” action signal.

If an EOS event was received before any buffers or the timeout expires, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

This function blocks until a preroll sample or EOS is received, the appsink element is set to the READY/NULL state, or the timeout expires.

Action

try-pull-sample

This function blocks until a sample or EOS becomes available or the appsink element is set to the READY/NULL state or the timeout expires.

This function will only return samples when the appsink is in the PLAYING state. All rendered samples will be put in a queue so that the application can pull samples at its own rate.

Note that when the application does not pull samples fast enough, the queued samples could consume a lot of memory, especially when dealing with raw video frames. It’s possible to control the behaviour of the queue with the “drop” and “max-buffers” / “max-bytes” / “max-time” set of properties.

If an EOS event was received before any buffers or the timeout expires, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

Action

Element

no-more-pads

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.

pad-added

a new GstPad 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 [ElementExtManual::set_state()][crate::gst::prelude::ElementExtManual::set_state()] or [ElementExtManual::sync_state_with_parent()][crate::gst::prelude::ElementExtManual::sync_state_with_parent()].

pad-removed

a GstPad has been removed from the element

Object

deep-notify

The deep notify signal is used to be notified of property changes. It is typically attached to the toplevel bin to receive notifications from all the elements contained in that bin.

Detailed

Implements

gst::prelude::ElementExt, gst::prelude::ObjectExt, [trait@glib::ObjectExt], gst::prelude::URIHandlerExt

GLib type: GObject with reference counted clone semantics.

Implementations

impl AppSink

pub fn is_buffer_list_support(&self) -> bool

Check if self supports buffer lists.

Returns

true if self supports buffer lists.

pub fn caps(&self) -> Option<Caps>

Get the configured caps on self.

Returns

the gst::Caps accepted by the sink. gst_caps_unref() after usage.

pub fn is_drop(&self) -> bool

Check if self will drop old buffers when the maximum amount of queued data is reached (meaning max buffers, time or bytes limit, whichever is hit first).

Returns

true if self is dropping old buffers when the queue is filled.

pub fn max_buffers(&self) -> u32

Get the maximum amount of buffers that can be queued in self.

Returns

The maximum amount of buffers that can be queued.

pub fn max_bytes(&self) -> u64

Get the maximum total size, in bytes, that can be queued in self.

Returns

The maximum amount of bytes that can be queued

pub fn max_time(&self) -> Option<ClockTime>

Get the maximum total duration that can be queued in self.

Returns

The maximum total duration that can be queued.

pub fn is_wait_on_eos(&self) -> bool

Check if self will wait for all buffers to be consumed when an EOS is received.

Returns

true if self will wait for all buffers to be consumed when an EOS is received.

pub fn is_eos(&self) -> bool

Check if self is EOS, which is when no more samples can be pulled because an EOS event was received.

This function also returns true when the appsink is not in the PAUSED or PLAYING state.

Returns

true if no more samples can be pulled and the appsink is EOS.

pub fn pull_object(&self) -> Result<MiniObject, BoolError>

This function blocks until a sample or an event becomes available or the appsink element is set to the READY/NULL state.

This function will only return samples when the appsink is in the PLAYING state. All rendered buffers and events will be put in a queue so that the application can pull them at its own rate. Note that when the application does not pull samples fast enough, the queued buffers could consume a lot of memory, especially when dealing with raw video frames. Events can be pulled when the appsink is in the READY, PAUSED or PLAYING state.

This function will only pull serialized events, excluding the EOS event for which this functions returns None. Use is_eos() to check for the EOS condition.

This method is a variant of pull_sample() that can be used to handle incoming events events as well as samples.

Note that future releases may extend this API to return other object types so make sure that your code is checking for the actual type it is handling.

Returns

a gst::Sample, or a GstEvent or NULL when the appsink is stopped or EOS. Call gst_mini_object_unref() after usage.

pub fn pull_preroll(&self) -> Result<Sample, BoolError>

Get the last preroll sample in self. This was the sample that caused the appsink to preroll in the PAUSED state.

This function is typically used when dealing with a pipeline in the PAUSED state. Calling this function after doing a seek will give the sample right after the seek position.

Calling this function will clear the internal reference to the preroll buffer.

Note that the preroll sample will also be returned as the first sample when calling pull_sample().

If an EOS event was received before any buffers, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

This function blocks until a preroll sample or EOS is received or the appsink element is set to the READY/NULL state.

Returns

a gst::Sample or NULL when the appsink is stopped or EOS. Call gst_sample_unref() after usage.

pub fn pull_sample(&self) -> Result<Sample, BoolError>

This function blocks until a sample or EOS becomes available or the appsink element is set to the READY/NULL state.

This function will only return samples when the appsink is in the PLAYING state. All rendered buffers will be put in a queue so that the application can pull samples at its own rate. Note that when the application does not pull samples fast enough, the queued buffers could consume a lot of memory, especially when dealing with raw video frames.

If an EOS event was received before any buffers, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

Returns

a gst::Sample or NULL when the appsink is stopped or EOS. Call gst_sample_unref() after usage.

pub fn set_buffer_list_support(&self, enable_lists: bool)

Instruct self to enable or disable buffer list support.

For backwards-compatibility reasons applications need to opt in to indicate that they will be able to handle buffer lists.

enable_lists

enable or disable buffer list support

pub fn set_caps(&self, caps: Option<&Caps>)

Set the capabilities on the appsink element. This function takes a copy of the caps structure. After calling this method, the sink will only accept caps that match caps. If caps is non-fixed, or incomplete, you must check the caps on the samples to get the actual used caps.

caps

caps to set

pub fn set_drop(&self, drop: bool)

Instruct self to drop old buffers when the maximum amount of queued data is reached, that is, when any configured limit is hit (max-buffers, max-time or max-bytes).

drop

the new state

pub fn set_max_buffers(&self, max: u32)

Set the maximum amount of buffers that can be queued in self. After this amount of buffers are queued in appsink, any more buffers will block upstream elements until a sample is pulled from self, unless ‘drop’ is set, in which case new buffers will be discarded.

max

the maximum number of buffers to queue

pub fn set_max_bytes(&self, max: u64)

Set the maximum total size that can be queued in self. After this amount of buffers are queued in appsink, any more buffers will block upstream elements until a sample is pulled from self, unless ‘drop’ is set, in which case new buffers will be discarded.

max

the maximum total size of buffers to queue, in bytes

pub fn set_max_time(&self, max: impl Into<Option<ClockTime>>)

Set the maximum total duration that can be queued in self. After this amount of buffers are queued in appsink, any more buffers will block upstream elements until a sample is pulled from self, unless ‘drop’ is set, in which case new buffers will be discarded.

max

the maximum total duration to queue

pub fn set_wait_on_eos(&self, wait: bool)

Instruct self to wait for all buffers to be consumed when an EOS is received.

wait

the new state

pub fn try_pull_object( &self, timeout: impl Into<Option<ClockTime>>, ) -> Option<MiniObject>

This function blocks until a sample or an event or EOS becomes available or the appsink element is set to the READY/NULL state or the timeout expires.

This function will only return samples when the appsink is in the PLAYING state. All rendered buffers and events will be put in a queue so that the application can pull them at its own rate. Note that when the application does not pull samples fast enough, the queued buffers could consume a lot of memory, especially when dealing with raw video frames. Events can be pulled when the appsink is in the READY, PAUSED or PLAYING state.

This function will only pull serialized events, excluding the EOS event for which this functions returns None. Use is_eos() to check for the EOS condition.

This method is a variant of try_pull_sample() that can be used to handle incoming events events as well as samples.

Note that future releases may extend this API to return other object types so make sure that your code is checking for the actual type it is handling.

timeout

the maximum amount of time to wait for a sample

Returns

a gst::Sample, or GstEvent or NULL when the appsink is stopped or EOS or the timeout expires. Call gst_mini_object_unref() after usage.

pub fn try_pull_preroll( &self, timeout: impl Into<Option<ClockTime>>, ) -> Option<Sample>

Get the last preroll sample in self. This was the sample that caused the appsink to preroll in the PAUSED state.

This function is typically used when dealing with a pipeline in the PAUSED state. Calling this function after doing a seek will give the sample right after the seek position.

Calling this function will clear the internal reference to the preroll buffer.

Note that the preroll sample will also be returned as the first sample when calling pull_sample().

If an EOS event was received before any buffers or the timeout expires, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

This function blocks until a preroll sample or EOS is received, the appsink element is set to the READY/NULL state, or the timeout expires.

timeout

the maximum amount of time to wait for the preroll sample

Returns

a gst::Sample or NULL when the appsink is stopped or EOS or the timeout expires. Call gst_sample_unref() after usage.

pub fn try_pull_sample( &self, timeout: impl Into<Option<ClockTime>>, ) -> Option<Sample>

This function blocks until a sample or EOS becomes available or the appsink element is set to the READY/NULL state or the timeout expires.

This function will only return samples when the appsink is in the PLAYING state. All rendered buffers will be put in a queue so that the application can pull samples at its own rate. Note that when the application does not pull samples fast enough, the queued buffers could consume a lot of memory, especially when dealing with raw video frames.

If an EOS event was received before any buffers or the timeout expires, this function returns None. Use gst_app_sink_is_eos () to check for the EOS condition.

timeout

the maximum amount of time to wait for a sample

Returns

a gst::Sample or NULL when the appsink is stopped or EOS or the timeout expires. Call gst_sample_unref() after usage.

pub fn is_buffer_list(&self) -> bool

pub fn set_buffer_list(&self, buffer_list: bool)

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

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

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

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

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

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

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

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

impl AppSink

pub fn builder() -> AppSinkBuilder

Creates a new builder-pattern struct instance to construct AppSink objects.

This method returns an instance of AppSinkBuilder which can be used to create AppSink objects.

pub fn set_callbacks(&self, callbacks: AppSinkCallbacks)

Set callbacks which will be executed for each new preroll, new sample and eos. This is an alternative to using the signals, it has lower overhead and is thus less expensive, but also less flexible.

If callbacks are installed, no signals will be emitted for performance reasons.

Before 1.16.3 it was not possible to change the callbacks in a thread-safe way.

callbacks

the callbacks

notify

a destroy notify function

pub fn drops_out_of_segment(&self) -> bool

pub fn max_bitrate(&self) -> u64

pub fn max_lateness(&self) -> i64

pub fn processing_deadline(&self) -> ClockTime

pub fn render_delay(&self) -> ClockTime

pub fn stats(&self) -> Structure

pub fn is_sync(&self) -> bool

pub fn throttle_time(&self) -> u64

pub fn ts_offset(&self) -> ClockTimeDiff

pub fn is_async(&self) -> bool

pub fn enables_last_sample(&self) -> bool

pub fn is_qos(&self) -> bool

pub fn set_async(&self, enabled: bool)

pub fn set_drop_out_of_segment(&self, drop_out_of_segment: bool)

pub fn set_enable_last_sample(&self, enabled: bool)

pub fn set_max_bitrate(&self, max_bitrate: u64)

pub fn set_max_lateness(&self, max_lateness: i64)

pub fn set_processing_deadline(&self, processing_deadline: ClockTime)

pub fn set_qos(&self, enabled: bool)

pub fn set_render_delay(&self, delay: ClockTime)

pub fn set_sync(&self, sync: bool)

pub fn set_throttle_time(&self, throttle: u64)

pub fn set_ts_offset(&self, offset: ClockTimeDiff)

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

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

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

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

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

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

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

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

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

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

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

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

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

pub fn stream(&self) -> AppSinkStream

Trait Implementations

impl Clone for AppSink

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AppSink

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

Formats the value using the given formatter.

impl HasParamSpec for AppSink

type ParamSpec = ParamSpecObject

type SetValue = AppSink

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, AppSink>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for AppSink

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for AppSink

fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl ParentClassIs for AppSink

type Parent = Element

impl<OT: ObjectType> PartialEq<OT> for AppSink

fn eq(&self, other: &OT) -> bool

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for AppSink

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn lt(&self, other: &Rhs) -> bool

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

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

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

fn ge(&self, other: &Rhs) -> bool

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

impl StaticType for AppSink

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for AppSink

impl IsA<Element> for AppSink

impl IsA<Object> for AppSink

impl IsA<URIHandler> for AppSink

impl Send for AppSink

impl Sync for AppSink