1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144

// Take a look at the license at the top of the repository in the LICENSE file.

use glib::{prelude::*, signal::SignalHandlerId, translate::*};

use crate::{ClockTime, Object, ObjectFlags};

mod sealed {
    pub trait Sealed {}
    impl<T: super::IsA<super::Object>> Sealed for T {}
}

pub trait GstObjectExtManual: sealed::Sealed + IsA<Object> + 'static {
    #[doc(alias = "deep-notify")]
    fn connect_deep_notify<
        F: Fn(&Self, &crate::Object, &glib::ParamSpec) + Send + Sync + 'static,
    >(
        &self,
        name: Option<&str>,
        f: F,
    ) -> SignalHandlerId {
        let signal_name = if let Some(name) = name {
            format!("deep-notify::{name}")
        } else {
            "deep-notify".into()
        };

        let obj: Borrowed<glib::Object> =
            unsafe { from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject) };

        obj.connect(signal_name.as_str(), false, move |values| {
            // It would be nice to display the actual signal name in the panic messages below,
            // but that would require to copy `signal_name` so as to move it into the closure
            // which seems too much for the messages of development errors
            let obj: Self = unsafe {
                values[0]
                    .get::<crate::Object>()
                    .unwrap_or_else(|err| panic!("Object signal \"deep-notify\": values[0]: {err}"))
                    .unsafe_cast()
            };
            let prop_obj: crate::Object = values[1]
                .get()
                .unwrap_or_else(|err| panic!("Object signal \"deep-notify\": values[1]: {err}"));

            let pspec = unsafe {
                let pspec = glib::gobject_ffi::g_value_get_param(values[2].to_glib_none().0);
                from_glib_none(pspec)
            };

            f(&obj, &prop_obj, &pspec);

            None
        })
    }

    fn set_object_flags(&self, flags: ObjectFlags) {
        unsafe {
            let ptr: *mut ffi::GstObject = self.as_ptr() as *mut _;
            let _guard = self.as_ref().object_lock();
            (*ptr).flags |= flags.into_glib();
        }
    }

    fn unset_object_flags(&self, flags: ObjectFlags) {
        unsafe {
            let ptr: *mut ffi::GstObject = self.as_ptr() as *mut _;
            let _guard = self.as_ref().object_lock();
            (*ptr).flags &= !flags.into_glib();
        }
    }

    #[doc(alias = "get_object_flags")]
    fn object_flags(&self) -> ObjectFlags {
        unsafe {
            let ptr: *mut ffi::GstObject = self.as_ptr() as *mut _;
            let _guard = self.as_ref().object_lock();
            from_glib((*ptr).flags)
        }
    }

    #[doc(alias = "get_g_value_array")]
    #[doc(alias = "gst_object_get_g_value_array")]

    fn g_value_array(
        &self,
        property_name: &str,
        timestamp: ClockTime,
        interval: ClockTime,
        values: &mut [glib::Value],
    ) -> Result<(), glib::error::BoolError> {
        let n_values = values.len() as u32;
        unsafe {
            glib::result_from_gboolean!(
                ffi::gst_object_get_g_value_array(
                    self.as_ref().to_glib_none().0,
                    property_name.to_glib_none().0,
                    timestamp.into_glib(),
                    interval.into_glib(),
                    n_values,
                    values.as_mut_ptr() as *mut glib::gobject_ffi::GValue,
                ),
                "Failed to get value array"
            )
        }
    }

    #[inline]
    fn object_lock(&self) -> crate::utils::ObjectLockGuard<Self> {
        crate::utils::ObjectLockGuard::acquire(self)
    }
}

impl<O: IsA<Object>> GstObjectExtManual for O {}

#[cfg(test)]
mod tests {
    use std::sync::{Arc, Mutex};

    use super::*;
    use crate::prelude::*;

    #[test]
    fn test_deep_notify() {
        crate::init().unwrap();

        let bin = crate::Bin::new();
        let identity = crate::ElementFactory::make("identity")
            .name("id")
            .build()
            .unwrap();
        bin.add(&identity).unwrap();

        let notify = Arc::new(Mutex::new(None));
        let notify_clone = notify.clone();
        bin.connect_deep_notify(None, move |_, id, prop| {
            *notify_clone.lock().unwrap() = Some((id.clone(), prop.name()));
        });

        identity.set_property("silent", false);
        assert_eq!(
            *notify.lock().unwrap(),
            Some((identity.upcast::<crate::Object>(), "silent"))
        );
    }
}