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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use ges_sys;
use glib::object::IsA;
use glib::translate::*;
use Extractable;
use TimelineElement;
use TrackElement;

glib_wrapper! {
    /// A `BaseEffect` is some operation that applies an effect to the data
    /// it receives.
    ///
    /// ## Time Effects
    ///
    /// Some operations will change the timing of the stream data they receive
    /// in some way. In particular, the `gst::Element` that they wrap could alter
    /// the times of the segment they receive in a `gst::EventType::Segment` event,
    /// or the times of a seek they receive in a `gst::EventType::Seek` event. Such
    /// operations would be considered time effects since they translate the
    /// times they receive on their source to different times at their sink,
    /// and vis versa. This introduces two sets of time coordinates for the
    /// event: (internal) sink coordinates and (internal) source coordinates,
    /// where segment times are translated from the sink coordinates to the
    /// source coordinates, and seek times are translated from the source
    /// coordinates to the sink coordinates.
    ///
    /// If you use such an effect in GES, you will need to inform GES of the
    /// properties that control the timing with
    /// `BaseEffectExt::register_time_property`, and the effect's timing
    /// behaviour using `BaseEffectExt::set_time_translation_funcs`.
    ///
    /// Note that a time effect should not have its
    /// `TrackElement:has-internal-source` set to `true`.
    ///
    /// In addition, note that GES only *fully* supports time effects whose
    /// mapping from the source to sink coordinates (those applied to seeks)
    /// obeys:
    ///
    /// + Maps the time `0` to `0`. So initial time-shifting effects are
    ///  excluded.
    /// + Is monotonically increasing. So reversing effects, and effects that
    ///  jump backwards in the stream are excluded.
    /// + Can handle a reasonable `gst::ClockTime`, relative to the project. So
    ///  this would exclude a time effect with an extremely large speed-up
    ///  that would cause the converted `gst::ClockTime` seeks to overflow.
    /// + Is 'continuously reversible'. This essentially means that for every
    ///  time in the sink coordinates, we can, to 'good enough' accuracy,
    ///  calculate the corresponding time in the source coordinates. Moreover,
    ///  this should correspond to how segment times are translated from
    ///  sink to source.
    /// + Only depends on the registered time properties, rather than the
    ///  state of the `gst::Element` or the data it receives. This would exclude,
    ///  say, an effect that would speedup if there is more red in the image
    ///  it receives.
    ///
    /// Note that a constant-rate-change effect that is not extremely fast or
    /// slow would satisfy these conditions. For such effects, you may wish to
    /// use `EffectClass::register_rate_property`.
    ///
    /// # Implements
    ///
    /// [`BaseEffectExt`](trait.BaseEffectExt.html), [`TrackElementExt`](trait.TrackElementExt.html), [`TimelineElementExt`](trait.TimelineElementExt.html), [`glib::object::ObjectExt`](../glib/object/trait.ObjectExt.html), [`ExtractableExt`](trait.ExtractableExt.html), [`TimelineElementExtManual`](prelude/trait.TimelineElementExtManual.html)
    pub struct BaseEffect(Object<ges_sys::GESBaseEffect, ges_sys::GESBaseEffectClass, BaseEffectClass>) @extends TrackElement, TimelineElement, @implements Extractable;

    match fn {
        get_type => || ges_sys::ges_base_effect_get_type(),
    }
}

pub const NONE_BASE_EFFECT: Option<&BaseEffect> = None;

/// Trait containing all `BaseEffect` methods.
///
/// # Implementors
///
/// [`BaseEffect`](struct.BaseEffect.html), [`Effect`](struct.Effect.html)
pub trait BaseEffectExt: 'static {
    /// Get whether the effect is considered a time effect or not. An effect
    /// with registered time properties or set translation functions is
    /// considered a time effect.
    ///
    /// Feature: `v1_18`
    ///
    ///
    /// # Returns
    ///
    /// `true` if `self` is considered a time effect.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn is_time_effect(&self) -> bool;

    /// Register a child property of the effect as a property that, when set,
    /// can change the timing of its input data. The child property should be
    /// specified as in `TimelineElementExt::lookup_child`.
    ///
    /// You should also set the corresponding time translation using
    /// `BaseEffectExt::set_time_translation_funcs`.
    ///
    /// Note that `self` must not be part of a clip, nor can it have
    /// `TrackElement:has-internal-source` set to `true`.
    ///
    /// Feature: `v1_18`
    ///
    /// ## `child_property_name`
    /// The name of the child property to register as
    /// a time property
    ///
    /// # Returns
    ///
    /// `true` if the child property was found and newly registered.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn register_time_property(&self, child_property_name: &str) -> bool;

    //#[cfg(any(feature = "v1_18", feature = "dox"))]
    //fn set_time_translation_funcs(&self, source_to_sink_func: /*Unimplemented*/Fn(&BaseEffect, gst::ClockTime, /*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 3, id: 11 }) -> gst::ClockTime, sink_to_source_func: /*Unimplemented*/Fn(&BaseEffect, gst::ClockTime, /*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 3, id: 11 }) -> gst::ClockTime, user_data: /*Unimplemented*/Option<Fundamental: Pointer>) -> bool;
}

impl<O: IsA<BaseEffect>> BaseEffectExt for O {
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn is_time_effect(&self) -> bool {
        unsafe {
            from_glib(ges_sys::ges_base_effect_is_time_effect(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn register_time_property(&self, child_property_name: &str) -> bool {
        unsafe {
            from_glib(ges_sys::ges_base_effect_register_time_property(
                self.as_ref().to_glib_none().0,
                child_property_name.to_glib_none().0,
            ))
        }
    }

    //#[cfg(any(feature = "v1_18", feature = "dox"))]
    //fn set_time_translation_funcs(&self, source_to_sink_func: /*Unimplemented*/Fn(&BaseEffect, gst::ClockTime, /*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 3, id: 11 }) -> gst::ClockTime, sink_to_source_func: /*Unimplemented*/Fn(&BaseEffect, gst::ClockTime, /*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 3, id: 11 }) -> gst::ClockTime, user_data: /*Unimplemented*/Option<Fundamental: Pointer>) -> bool {
    //    unsafe { TODO: call ges_sys:ges_base_effect_set_time_translation_funcs() }
    //}
}