gstreamer_app/auto/

app_sink.rs

// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// from gst-gir-files (https://gitlab.freedesktop.org/gstreamer/gir-files-rs.git)
// DO NOT EDIT
#![allow(deprecated)]

#[cfg(feature = "v1_28")]
#[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
use crate::AppLeakyType;
use crate::ffi;
use glib::{
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// 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()`][Self::pull_sample()] and [`pull_preroll()`][Self::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()`][Self::try_pull_sample()] and [`try_pull_preroll()`][Self::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 "leaky-type" 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()`][Self::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 | Writable
    ///
    ///
    /// #### `caps`
    ///  Readable | Writable
    ///
    ///
    /// #### `current-level-buffers`
    ///  The number of currently queued buffers inside appsink.
    ///
    /// Readable
    ///
    ///
    /// #### `current-level-bytes`
    ///  The number of currently queued bytes inside appsink.
    ///
    /// Readable
    ///
    ///
    /// #### `current-level-time`
    ///  The amount of currently queued time inside appsink.
    ///
    /// Readable
    ///
    ///
    /// #### `drop`
    ///  Drop old buffers when the buffer queue is filled.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `dropped`
    ///  Number of buffers that were dropped.
    ///
    /// Readable
    ///
    ///
    /// #### `emit-signals`
    ///  Readable | Writable
    ///
    ///
    /// #### `eos`
    ///  Readable
    ///
    ///
    /// #### `in`
    ///  Number of input buffers that were queued.
    ///
    /// Readable
    ///
    ///
    /// #### `leaky-type`
    ///  When set to any other value than GST_APP_LEAKY_TYPE_NONE then the appsink
    /// will drop any buffers that are pushed into it once its internal queue is
    /// full. The selected type defines whether to drop the oldest or new
    /// buffers.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `max-buffers`
    ///  Maximum amount of buffers in the queue (0 = unlimited).
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `max-bytes`
    ///  Maximum amount of bytes in the queue (0 = unlimited)
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `max-time`
    ///  Maximum total duration of data in the queue (0 = unlimited)
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `out`
    ///  Number of output buffers that were dequeued.
    ///
    /// Readable
    ///
    ///
    /// #### `silent`
    ///  Don't emit notify for input, output and dropped buffers.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    /// <details><summary><h4>BaseSink</h4></summary>
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `blocksize`
    ///  The amount of bytes to pull when operating in pull mode.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `enable-last-sample-notify`
    ///  Enable emission of the "notify::last-sample" signal. This is disabled by
    /// default as it can be expensive: the notification is emitted for every
    /// buffer that updates the last sample. It has no effect unless
    /// `GstBaseSink:enable-last-sample` is also [`true`].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `max-lateness`
    ///  Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `qos`
    ///  Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `stats`
    ///  Various `GstBaseSink` statistics. This property returns a [`gst::Structure`][crate::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 | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `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 | Writable
    /// </details>
    /// <details><summary><h4>Object</h4></summary>
    ///
    ///
    /// #### `name`
    ///  Readable | Writable | Construct
    ///
    ///
    /// #### `parent`
    ///  The parent of the object. Please note, that when changing the 'parent'
    /// property, we don't emit [`notify`][struct@crate::glib::Object#notify] and [`deep-notify`][struct@crate::gst::Object#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 | Writable
    /// </details>
    ///
    /// ## 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()`][crate::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()`][crate::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()`][crate::AppSink::pull_object()] either from this signal callback
    /// or from any other thread.
    ///
    /// EOS will not be notified using this signal, use [`eos`][struct@crate::AppSink#eos] instead.
    /// EOS cannot be pulled either, use [`AppSink::is_eos()`][crate::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()`][crate::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 "leaky-type" 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 "leaky-type" 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()`][crate::AppSink::is_eos()] to check for the EOS condition.
    ///
    /// This signal is a variant of [`try-pull-sample`][struct@crate::AppSink#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()`][crate::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 "leaky-type" 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
    /// <details><summary><h4>Element</h4></summary>
    ///
    ///
    /// #### `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
    ///
    ///
    /// </details>
    /// <details><summary><h4>Object</h4></summary>
    ///
    ///
    /// #### `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
    /// </details>
    ///
    /// # Implements
    ///
    /// [`trait@gst::prelude::ElementExt`], [`trait@gst::prelude::ObjectExt`], [`trait@glib::ObjectExt`], [`trait@gst::prelude::URIHandlerExt`]
    #[doc(alias = "GstAppSink")]
    pub struct AppSink(Object<ffi::GstAppSink, ffi::GstAppSinkClass>) @extends gst::Element, gst::Object, @implements gst::URIHandler;

    match fn {
        type_ => || ffi::gst_app_sink_get_type(),
    }
}

impl AppSink {
    /// Check if `self` supports buffer lists.
    ///
    /// # Returns
    ///
    /// [`true`] if `self` supports buffer lists.
    #[doc(alias = "gst_app_sink_get_buffer_list_support")]
    #[doc(alias = "get_buffer_list_support")]
    pub fn is_buffer_list_support(&self) -> bool {
        unsafe {
            from_glib(ffi::gst_app_sink_get_buffer_list_support(
                self.to_glib_none().0,
            ))
        }
    }

    /// Get the configured caps on `self`.
    ///
    /// # Returns
    ///
    /// the [`gst::Caps`][crate::gst::Caps] accepted by the sink. `gst_caps_unref()` after usage.
    #[doc(alias = "gst_app_sink_get_caps")]
    #[doc(alias = "get_caps")]
    pub fn caps(&self) -> Option<gst::Caps> {
        unsafe { from_glib_full(ffi::gst_app_sink_get_caps(self.to_glib_none().0)) }
    }

    /// Get the number of currently queued buffers inside `self`.
    ///
    /// # Returns
    ///
    /// The number of currently queued buffers.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "gst_app_sink_get_current_level_buffers")]
    #[doc(alias = "get_current_level_buffers")]
    #[doc(alias = "current-level-buffers")]
    pub fn current_level_buffers(&self) -> u64 {
        unsafe { ffi::gst_app_sink_get_current_level_buffers(self.to_glib_none().0) }
    }

    /// Get the number of currently queued bytes inside `self`.
    ///
    /// # Returns
    ///
    /// The number of currently queued bytes.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "gst_app_sink_get_current_level_bytes")]
    #[doc(alias = "get_current_level_bytes")]
    #[doc(alias = "current-level-bytes")]
    pub fn current_level_bytes(&self) -> u64 {
        unsafe { ffi::gst_app_sink_get_current_level_bytes(self.to_glib_none().0) }
    }

    /// Get the amount of currently queued time inside `self`.
    ///
    /// # Returns
    ///
    /// The amount of currently queued time.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "gst_app_sink_get_current_level_time")]
    #[doc(alias = "get_current_level_time")]
    #[doc(alias = "current-level-time")]
    pub fn current_level_time(&self) -> Option<gst::ClockTime> {
        unsafe {
            from_glib(ffi::gst_app_sink_get_current_level_time(
                self.to_glib_none().0,
            ))
        }
    }

    /// 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).
    ///
    /// # Deprecated since 1.28
    ///
    /// Use [`AppSrc::leaky_type()`][crate::AppSrc::leaky_type()] instead.
    ///
    /// # Returns
    ///
    /// [`true`] if `self` is dropping old buffers when the queue is
    /// filled.
    #[cfg_attr(feature = "v1_28", deprecated = "Since 1.28")]
    #[allow(deprecated)]
    #[doc(alias = "gst_app_sink_get_drop")]
    #[doc(alias = "get_drop")]
    #[doc(alias = "drop")]
    pub fn is_drop(&self) -> bool {
        unsafe { from_glib(ffi::gst_app_sink_get_drop(self.to_glib_none().0)) }
    }

    /// Returns the currently set [`AppLeakyType`][crate::AppLeakyType]. See [`set_leaky_type()`][Self::set_leaky_type()]
    /// for more details.
    ///
    /// # Returns
    ///
    /// The currently set [`AppLeakyType`][crate::AppLeakyType].
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "gst_app_sink_get_leaky_type")]
    #[doc(alias = "get_leaky_type")]
    #[doc(alias = "leaky-type")]
    pub fn leaky_type(&self) -> AppLeakyType {
        unsafe { from_glib(ffi::gst_app_sink_get_leaky_type(self.to_glib_none().0)) }
    }

    /// Get the maximum amount of buffers that can be queued in `self`.
    ///
    /// # Returns
    ///
    /// The maximum amount of buffers that can be queued.
    #[doc(alias = "gst_app_sink_get_max_buffers")]
    #[doc(alias = "get_max_buffers")]
    #[doc(alias = "max-buffers")]
    pub fn max_buffers(&self) -> u32 {
        unsafe { ffi::gst_app_sink_get_max_buffers(self.to_glib_none().0) }
    }

    /// Get the maximum total size, in bytes, that can be queued in `self`.
    ///
    /// # Returns
    ///
    /// The maximum amount of bytes that can be queued
    #[cfg(feature = "v1_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_24")))]
    #[doc(alias = "gst_app_sink_get_max_bytes")]
    #[doc(alias = "get_max_bytes")]
    #[doc(alias = "max-bytes")]
    pub fn max_bytes(&self) -> u64 {
        unsafe { ffi::gst_app_sink_get_max_bytes(self.to_glib_none().0) }
    }

    /// Get the maximum total duration that can be queued in `self`.
    ///
    /// # Returns
    ///
    /// The maximum total duration that can be queued.
    #[cfg(feature = "v1_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_24")))]
    #[doc(alias = "gst_app_sink_get_max_time")]
    #[doc(alias = "get_max_time")]
    #[doc(alias = "max-time")]
    pub fn max_time(&self) -> Option<gst::ClockTime> {
        unsafe { from_glib(ffi::gst_app_sink_get_max_time(self.to_glib_none().0)) }
    }

    /// 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.
    #[doc(alias = "gst_app_sink_get_wait_on_eos")]
    #[doc(alias = "get_wait_on_eos")]
    #[doc(alias = "wait-on-eos")]
    pub fn is_wait_on_eos(&self) -> bool {
        unsafe { from_glib(ffi::gst_app_sink_get_wait_on_eos(self.to_glib_none().0)) }
    }

    /// 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.
    #[doc(alias = "gst_app_sink_is_eos")]
    #[doc(alias = "eos")]
    pub fn is_eos(&self) -> bool {
        unsafe { from_glib(ffi::gst_app_sink_is_eos(self.to_glib_none().0)) }
    }

    /// 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()`][Self::is_eos()] to check for the EOS condition.
    ///
    /// This method is a variant of [`pull_sample()`][Self::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`][crate::gst::Sample], or a `GstEvent` or NULL when the appsink is stopped or EOS.
    ///  Call `gst_mini_object_unref()` after usage.
    #[cfg(feature = "v1_20")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_20")))]
    #[doc(alias = "gst_app_sink_pull_object")]
    pub fn pull_object(&self) -> Result<gst::MiniObject, glib::BoolError> {
        unsafe {
            Option::<_>::from_glib_full(ffi::gst_app_sink_pull_object(self.to_glib_none().0))
                .ok_or_else(|| glib::bool_error!("Failed to pull object"))
        }
    }

    /// 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()`][Self::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`][crate::gst::Sample] or NULL when the appsink is stopped or EOS.
    ///  Call `gst_sample_unref()` after usage.
    #[doc(alias = "gst_app_sink_pull_preroll")]
    pub fn pull_preroll(&self) -> Result<gst::Sample, glib::BoolError> {
        unsafe {
            Option::<_>::from_glib_full(ffi::gst_app_sink_pull_preroll(self.to_glib_none().0))
                .ok_or_else(|| glib::bool_error!("Failed to pull preroll 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 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`][crate::gst::Sample] or NULL when the appsink is stopped or EOS.
    ///  Call `gst_sample_unref()` after usage.
    #[doc(alias = "gst_app_sink_pull_sample")]
    pub fn pull_sample(&self) -> Result<gst::Sample, glib::BoolError> {
        unsafe {
            Option::<_>::from_glib_full(ffi::gst_app_sink_pull_sample(self.to_glib_none().0))
                .ok_or_else(|| glib::bool_error!("Failed to pull sample"))
        }
    }

    /// 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
    #[doc(alias = "gst_app_sink_set_buffer_list_support")]
    pub fn set_buffer_list_support(&self, enable_lists: bool) {
        unsafe {
            ffi::gst_app_sink_set_buffer_list_support(
                self.to_glib_none().0,
                enable_lists.into_glib(),
            );
        }
    }

    //#[doc(alias = "gst_app_sink_set_callbacks")]
    //pub fn set_callbacks(&self, callbacks: /*Ignored*/Option<&mut AppSinkCallbacks>, user_data: /*Unimplemented*/Option<Basic: Pointer>) {
    //    unsafe { TODO: call ffi:gst_app_sink_set_callbacks() }
    //}

    /// 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
    #[doc(alias = "gst_app_sink_set_caps")]
    #[doc(alias = "caps")]
    pub fn set_caps(&self, caps: Option<&gst::Caps>) {
        unsafe {
            ffi::gst_app_sink_set_caps(self.to_glib_none().0, caps.to_glib_none().0);
        }
    }

    /// 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).
    ///
    /// # Deprecated since 1.28
    ///
    /// Use [`AppSrc::leaky_type()`][crate::AppSrc::leaky_type()] instead.
    /// ## `drop`
    /// the new state
    #[cfg_attr(feature = "v1_28", deprecated = "Since 1.28")]
    #[allow(deprecated)]
    #[doc(alias = "gst_app_sink_set_drop")]
    #[doc(alias = "drop")]
    pub fn set_drop(&self, drop: bool) {
        unsafe {
            ffi::gst_app_sink_set_drop(self.to_glib_none().0, drop.into_glib());
        }
    }

    /// When set to any other value than GST_APP_LEAKY_TYPE_NONE then the appsink
    /// will drop any buffers that are pushed into it once its internal queue is
    /// full. The selected type defines whether to drop the oldest or new
    /// buffers.
    /// ## `leaky`
    /// the [`AppLeakyType`][crate::AppLeakyType]
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "gst_app_sink_set_leaky_type")]
    #[doc(alias = "leaky-type")]
    pub fn set_leaky_type(&self, leaky: AppLeakyType) {
        unsafe {
            ffi::gst_app_sink_set_leaky_type(self.to_glib_none().0, leaky.into_glib());
        }
    }

    /// 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
    #[doc(alias = "gst_app_sink_set_max_buffers")]
    #[doc(alias = "max-buffers")]
    pub fn set_max_buffers(&self, max: u32) {
        unsafe {
            ffi::gst_app_sink_set_max_buffers(self.to_glib_none().0, max);
        }
    }

    /// 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
    #[cfg(feature = "v1_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_24")))]
    #[doc(alias = "gst_app_sink_set_max_bytes")]
    #[doc(alias = "max-bytes")]
    pub fn set_max_bytes(&self, max: u64) {
        unsafe {
            ffi::gst_app_sink_set_max_bytes(self.to_glib_none().0, max);
        }
    }

    /// 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
    #[cfg(feature = "v1_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_24")))]
    #[doc(alias = "gst_app_sink_set_max_time")]
    #[doc(alias = "max-time")]
    pub fn set_max_time(&self, max: impl Into<Option<gst::ClockTime>>) {
        unsafe {
            ffi::gst_app_sink_set_max_time(self.to_glib_none().0, max.into().into_glib());
        }
    }

    //#[cfg(feature = "v1_28")]
    //#[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    //#[doc(alias = "gst_app_sink_set_simple_callbacks")]
    //pub fn set_simple_callbacks(&self, cb: /*Ignored*/Option<AppSinkSimpleCallbacks>) {
    //    unsafe { TODO: call ffi:gst_app_sink_set_simple_callbacks() }
    //}

    /// Instruct `self` to wait for all buffers to be consumed when an EOS is received.
    /// ## `wait`
    /// the new state
    #[doc(alias = "gst_app_sink_set_wait_on_eos")]
    #[doc(alias = "wait-on-eos")]
    pub fn set_wait_on_eos(&self, wait: bool) {
        unsafe {
            ffi::gst_app_sink_set_wait_on_eos(self.to_glib_none().0, wait.into_glib());
        }
    }

    /// 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()`][Self::is_eos()] to check for the EOS condition.
    ///
    /// This method is a variant of [`try_pull_sample()`][Self::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`][crate::gst::Sample], or `GstEvent` or NULL when the appsink is stopped or EOS or the timeout expires.
    /// Call `gst_mini_object_unref()` after usage.
    #[cfg(feature = "v1_20")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_20")))]
    #[doc(alias = "gst_app_sink_try_pull_object")]
    pub fn try_pull_object(
        &self,
        timeout: impl Into<Option<gst::ClockTime>>,
    ) -> Option<gst::MiniObject> {
        unsafe {
            from_glib_full(ffi::gst_app_sink_try_pull_object(
                self.to_glib_none().0,
                timeout.into().into_glib(),
            ))
        }
    }

    /// 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()`][Self::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`][crate::gst::Sample] or NULL when the appsink is stopped or EOS or the timeout expires.
    ///  Call `gst_sample_unref()` after usage.
    #[doc(alias = "gst_app_sink_try_pull_preroll")]
    pub fn try_pull_preroll(
        &self,
        timeout: impl Into<Option<gst::ClockTime>>,
    ) -> Option<gst::Sample> {
        unsafe {
            from_glib_full(ffi::gst_app_sink_try_pull_preroll(
                self.to_glib_none().0,
                timeout.into().into_glib(),
            ))
        }
    }

    /// 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`][crate::gst::Sample] or NULL when the appsink is stopped or EOS or the timeout expires.
    ///  Call `gst_sample_unref()` after usage.
    #[doc(alias = "gst_app_sink_try_pull_sample")]
    pub fn try_pull_sample(
        &self,
        timeout: impl Into<Option<gst::ClockTime>>,
    ) -> Option<gst::Sample> {
        unsafe {
            from_glib_full(ffi::gst_app_sink_try_pull_sample(
                self.to_glib_none().0,
                timeout.into().into_glib(),
            ))
        }
    }

    #[doc(alias = "buffer-list")]
    pub fn is_buffer_list(&self) -> bool {
        ObjectExt::property(self, "buffer-list")
    }

    #[doc(alias = "buffer-list")]
    pub fn set_buffer_list(&self, buffer_list: bool) {
        ObjectExt::set_property(self, "buffer-list", buffer_list)
    }

    /// Number of buffers that were dropped.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    pub fn dropped(&self) -> u64 {
        ObjectExt::property(self, "dropped")
    }

    /// Number of input buffers that were queued.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "in")]
    pub fn get_in(&self) -> u64 {
        ObjectExt::property(self, "in")
    }

    /// Number of output buffers that were dequeued.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    pub fn out(&self) -> u64 {
        ObjectExt::property(self, "out")
    }

    /// Don't emit notify for input, output and dropped buffers.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    pub fn is_silent(&self) -> bool {
        ObjectExt::property(self, "silent")
    }

    /// Don't emit notify for input, output and dropped buffers.
    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    pub fn set_silent(&self, silent: bool) {
        ObjectExt::set_property(self, "silent", silent)
    }

    #[doc(alias = "buffer-list")]
    pub fn connect_buffer_list_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_buffer_list_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::buffer-list".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_buffer_list_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "caps")]
    pub fn connect_caps_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_caps_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::caps".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_caps_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "current-level-buffers")]
    pub fn connect_current_level_buffers_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_current_level_buffers_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::current-level-buffers".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_current_level_buffers_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "current-level-bytes")]
    pub fn connect_current_level_bytes_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_current_level_bytes_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::current-level-bytes".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_current_level_bytes_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "current-level-time")]
    pub fn connect_current_level_time_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_current_level_time_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::current-level-time".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_current_level_time_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg_attr(feature = "v1_28", deprecated = "Since 1.28")]
    #[doc(alias = "drop")]
    pub fn connect_drop_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_drop_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::drop".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_drop_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "dropped")]
    pub fn connect_dropped_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_dropped_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::dropped".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_dropped_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "eos")]
    pub fn connect_eos_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_eos_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::eos".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_eos_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "in")]
    pub fn connect_in_notify<F: Fn(&Self) + Send + Sync + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_in_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::in".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_in_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "leaky-type")]
    pub fn connect_leaky_type_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_leaky_type_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::leaky-type".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_leaky_type_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "max-buffers")]
    pub fn connect_max_buffers_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_max_buffers_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::max-buffers".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_max_buffers_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_24")))]
    #[doc(alias = "max-bytes")]
    pub fn connect_max_bytes_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_max_bytes_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::max-bytes".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_max_bytes_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_24")))]
    #[doc(alias = "max-time")]
    pub fn connect_max_time_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_max_time_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::max-time".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_max_time_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "out")]
    pub fn connect_out_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_out_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::out".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_out_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v1_28")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v1_28")))]
    #[doc(alias = "silent")]
    pub fn connect_silent_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_silent_trampoline<F: Fn(&AppSink) + Send + Sync + 'static>(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::silent".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_silent_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "wait-on-eos")]
    pub fn connect_wait_on_eos_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_wait_on_eos_trampoline<
            F: Fn(&AppSink) + Send + Sync + 'static,
        >(
            this: *mut ffi::GstAppSink,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::wait-on-eos".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_wait_on_eos_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

unsafe impl Send for AppSink {}
unsafe impl Sync for AppSink {}