1use crate::{ffi, ClockTime, Message, Object};
7use glib::{
8 object::ObjectType as _,
9 prelude::*,
10 signal::{connect_raw, SignalHandlerId},
11 translate::*,
12};
13use std::boxed::Box as Box_;
14
15glib::wrapper! {
16 #[doc(alias = "GstBus")]
17 pub struct Bus(Object<ffi::GstBus, ffi::GstBusClass>) @extends Object;
18
19 match fn {
20 type_ => || ffi::gst_bus_get_type(),
21 }
22}
23
24impl Bus {
25 #[doc(alias = "gst_bus_new")]
26 pub fn new() -> Bus {
27 assert_initialized_main_thread!();
28 unsafe { from_glib_full(ffi::gst_bus_new()) }
29 }
30
31 #[doc(alias = "gst_bus_add_signal_watch")]
32 pub fn add_signal_watch(&self) {
33 unsafe {
34 ffi::gst_bus_add_signal_watch(self.to_glib_none().0);
35 }
36 }
37
38 #[doc(alias = "gst_bus_disable_sync_message_emission")]
44 pub fn disable_sync_message_emission(&self) {
45 unsafe {
46 ffi::gst_bus_disable_sync_message_emission(self.to_glib_none().0);
47 }
48 }
49
50 #[doc(alias = "gst_bus_enable_sync_message_emission")]
51 pub fn enable_sync_message_emission(&self) {
52 unsafe {
53 ffi::gst_bus_enable_sync_message_emission(self.to_glib_none().0);
54 }
55 }
56
57 #[doc(alias = "gst_bus_have_pending")]
64 pub fn have_pending(&self) -> bool {
65 unsafe { from_glib(ffi::gst_bus_have_pending(self.to_glib_none().0)) }
66 }
67
68 #[doc(alias = "gst_bus_peek")]
69 pub fn peek(&self) -> Option<Message> {
70 unsafe { from_glib_full(ffi::gst_bus_peek(self.to_glib_none().0)) }
71 }
72
73 #[doc(alias = "gst_bus_pop")]
74 pub fn pop(&self) -> Option<Message> {
75 unsafe { from_glib_full(ffi::gst_bus_pop(self.to_glib_none().0)) }
76 }
77
78 #[doc(alias = "gst_bus_post")]
79 pub fn post(&self, message: Message) -> Result<(), glib::error::BoolError> {
80 unsafe {
81 glib::result_from_gboolean!(
82 ffi::gst_bus_post(self.to_glib_none().0, message.into_glib_ptr()),
83 "Failed to post message"
84 )
85 }
86 }
87
88 #[doc(alias = "gst_bus_remove_signal_watch")]
89 pub fn remove_signal_watch(&self) {
90 unsafe {
91 ffi::gst_bus_remove_signal_watch(self.to_glib_none().0);
92 }
93 }
94
95 #[doc(alias = "gst_bus_remove_watch")]
96 #[allow(dead_code)]
97 pub(crate) fn remove_watch(&self) -> Result<(), glib::error::BoolError> {
98 unsafe {
99 glib::result_from_gboolean!(
100 ffi::gst_bus_remove_watch(self.to_glib_none().0),
101 "Bus has no event source"
102 )
103 }
104 }
105
106 #[doc(alias = "gst_bus_set_flushing")]
107 pub fn set_flushing(&self, flushing: bool) {
108 unsafe {
109 ffi::gst_bus_set_flushing(self.to_glib_none().0, flushing.into_glib());
110 }
111 }
112
113 #[doc(alias = "gst_bus_timed_pop")]
119 pub fn timed_pop(&self, timeout: impl Into<Option<ClockTime>>) -> Option<Message> {
120 unsafe {
121 from_glib_full(ffi::gst_bus_timed_pop(
122 self.to_glib_none().0,
123 timeout.into().into_glib(),
124 ))
125 }
126 }
127
128 #[doc(alias = "message")]
129 pub fn connect_message<F: Fn(&Self, &Message) + Send + 'static>(
130 &self,
131 detail: Option<&str>,
132 f: F,
133 ) -> SignalHandlerId {
134 unsafe extern "C" fn message_trampoline<F: Fn(&Bus, &Message) + Send + 'static>(
135 this: *mut ffi::GstBus,
136 message: *mut ffi::GstMessage,
137 f: glib::ffi::gpointer,
138 ) {
139 let f: &F = &*(f as *const F);
140 f(&from_glib_borrow(this), &from_glib_borrow(message))
141 }
142 unsafe {
143 let f: Box_<F> = Box_::new(f);
144 let detailed_signal_name = detail.map(|name| format!("message::{name}\0"));
145 let signal_name: &[u8] = detailed_signal_name
146 .as_ref()
147 .map_or(&b"message\0"[..], |n| n.as_bytes());
148 connect_raw(
149 self.as_ptr() as *mut _,
150 signal_name.as_ptr() as *const _,
151 Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
152 message_trampoline::<F> as *const (),
153 )),
154 Box_::into_raw(f),
155 )
156 }
157 }
158
159 #[doc(alias = "sync-message")]
160 pub fn connect_sync_message<F: Fn(&Self, &Message) + Send + Sync + 'static>(
161 &self,
162 detail: Option<&str>,
163 f: F,
164 ) -> SignalHandlerId {
165 unsafe extern "C" fn sync_message_trampoline<
166 F: Fn(&Bus, &Message) + Send + Sync + 'static,
167 >(
168 this: *mut ffi::GstBus,
169 message: *mut ffi::GstMessage,
170 f: glib::ffi::gpointer,
171 ) {
172 let f: &F = &*(f as *const F);
173 f(&from_glib_borrow(this), &from_glib_borrow(message))
174 }
175 unsafe {
176 let f: Box_<F> = Box_::new(f);
177 let detailed_signal_name = detail.map(|name| format!("sync-message::{name}\0"));
178 let signal_name: &[u8] = detailed_signal_name
179 .as_ref()
180 .map_or(&b"sync-message\0"[..], |n| n.as_bytes());
181 connect_raw(
182 self.as_ptr() as *mut _,
183 signal_name.as_ptr() as *const _,
184 Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
185 sync_message_trampoline::<F> as *const (),
186 )),
187 Box_::into_raw(f),
188 )
189 }
190 }
191}
192
193impl Default for Bus {
194 fn default() -> Self {
195 Self::new()
196 }
197}
198
199unsafe impl Send for Bus {}
200unsafe impl Sync for Bus {}