Add playbin example

examples/src/bin/playbin.rs

@@ -0,0 +1,61 @@
+extern crate gstreamer as gst;
+use gst::*;
+
+extern crate glib;
+use glib::ObjectExt;
+
+use std::env;
+use std::u64;
+
+fn main() {
+    gst::init().unwrap();
+
+    let args: Vec<_> = env::args().collect();
+    let uri: &str = if args.len() == 2 {
+        args[1].as_ref()
+    } else {
+        panic!("Usage: playbin uri");
+    };
+
+    let playbin = gst::ElementFactory::make("playbin", None).unwrap();
+    playbin.set_property("uri", &Value::from(uri)).unwrap();
+
+    // For flags handling
+    // let flags = playbin.get_property("flags").unwrap();
+    // let flags_class = FlagsClass::new(flags.type_()).unwrap();
+    // let flags = flags_class.builder_with_value(flags).unwrap()
+    //     .unset_by_nick("text")
+    //     .unset_by_nick("video")
+    //     .build()
+    //     .unwrap();
+    // playbin.set_property("flags", &flags).unwrap();
+
+    let bus = playbin.get_bus().unwrap();
+
+    let ret = playbin.set_state(gst::State::Playing);
+    assert_ne!(ret, gst::StateChangeReturn::Failure);
+
+    loop {
+        let msg = match bus.timed_pop(u64::MAX) {
+            None => break,
+            Some(msg) => msg,
+        };
+
+        match msg.view() {
+            MessageView::Eos(..) => break,
+            MessageView::Error(err) => {
+                println!(
+                    "Error from {}: {} ({:?})",
+                    msg.get_src().get_path_string(),
+                    err.get_error(),
+                    err.get_debug()
+                );
+                break;
+            }
+            _ => (),
+        }
+    }
+
+    let ret = playbin.set_state(gst::State::Null);
+    assert_ne!(ret, gst::StateChangeReturn::Failure);
+}