gstreamer-rs/tutorials/src/bin/basic-tutorial-1.rs

extern crate gstreamer as gst;
use gst::prelude::*;

#[path = "../tutorials-common.rs"]
mod tutorials_common;

fn tutorial_main() {
    // Initialize GStreamer
    gst::init().unwrap();

    // Build the pipeline
    let uri =
        "https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm";
    let pipeline = gst::parse_launch(&format!("playbin uri={}", uri)).unwrap();

    // Start playing
    let ret = pipeline.set_state(gst::State::Playing);
    assert_ne!(ret, gst::StateChangeReturn::Failure);

    // Wait until error or EOS
    let bus = pipeline.get_bus().unwrap();
    for msg in bus.iter_timed(gst::CLOCK_TIME_NONE) {
        use gst::MessageView;

        match msg.view() {
            MessageView::Eos(..) => break,
            MessageView::Error(err) => {
                println!(
                    "Error from {:?}: {} ({:?})",
                    err.get_src().map(|s| s.get_path_string()),
                    err.get_error(),
                    err.get_debug()
                );
                break;
            }
            _ => (),
        }
    }

    // Shutdown pipeline
    let ret = pipeline.set_state(gst::State::Null);
    assert_ne!(ret, gst::StateChangeReturn::Failure);
}

fn main() {
    // tutorials_common::run is only required to set up the application environment on macOS
    // (but not necessary in normal Cocoa applications where this is set up automatically)
    tutorials_common::run(tutorial_main);
}