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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;
use glib::object::IsA;
use glib::translate::*;
use glib::GString;
use glib::StaticType;
use glib::Value;
use gobject_sys;
use BaseEffect;
use Extractable;
use TimelineElement;
use TrackElement;

glib_wrapper! {
    /// Currently we only support effects with N sinkpads and one single srcpad.
    /// Apart from `gesaudiomixer` and `gescompositor` which can be used as effects
    /// and where sinkpads will be requested as needed based on the timeline topology
    /// GES will always request at most one sinkpad per effect (when required).
    ///
    /// > Note: GES always adds converters (`audioconvert ! audioresample !
    /// > audioconvert` for audio effects and `videoconvert` for video effects) to
    /// > make it simpler for end users.
    ///
    /// # Implements
    ///
    /// [`EffectExt`](trait.EffectExt.html), [`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 Effect(Object<ges_sys::GESEffect, ges_sys::GESEffectClass, EffectClass>) @extends BaseEffect, TrackElement, TimelineElement, @implements Extractable;

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

impl Effect {
    /// Creates a new `Effect` from the description of the bin. It should be
    /// possible to determine the type of the effect through the element
    /// 'klass' metadata of the GstElements that will be created.
    /// In that corner case, you should use:
    /// `Asset::request` (GES_TYPE_EFFECT, "audio your ! bin ! description", NULL);
    /// and extract that asset to be in full control.
    /// ## `bin_description`
    /// The gst-launch like bin description of the effect
    ///
    /// # Returns
    ///
    /// a newly created `Effect`, or `None` if something went
    /// wrong.
    pub fn new(bin_description: &str) -> Result<Effect, glib::BoolError> {
        assert_initialized_main_thread!();
        unsafe {
            Option::<_>::from_glib_none(ges_sys::ges_effect_new(bin_description.to_glib_none().0))
                .ok_or_else(|| glib_bool_error!("Failed to create effect from description"))
        }
    }
}

pub const NONE_EFFECT: Option<&Effect> = None;

/// Trait containing all `Effect` methods.
///
/// # Implementors
///
/// [`Effect`](struct.Effect.html)
pub trait EffectExt: 'static {
    /// The description of the effect bin with a gst-launch-style
    /// pipeline description.
    ///
    /// Example: "videobalance saturation=1.5 hue=+0.5"
    fn get_property_bin_description(&self) -> Option<GString>;
}

impl<O: IsA<Effect>> EffectExt for O {
    fn get_property_bin_description(&self) -> Option<GString> {
        unsafe {
            let mut value = Value::from_type(<GString as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.to_glib_none().0 as *mut gobject_sys::GObject,
                b"bin-description\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `bin-description` getter")
        }
    }
}