59 lines
1.5 KiB
Rust
59 lines
1.5 KiB
Rust
use anyhow::Result;
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use gst::prelude::*;
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use gst::glib;
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use gst::glib::once_cell::sync::Lazy;
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static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
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gst::DebugCategory::new(
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"main",
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gst::DebugColorFlags::empty(),
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Some("Main function"),
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)
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});
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fn main() -> Result<()> {
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gst::init()?;
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let pipeline = gst::parse_launch(r#"
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videotestsrc ! videoconvert ! timeoverlay shaded-background=true ! gtksink
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"#,)?.downcast::<gst::Pipeline>().unwrap();
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let context = glib::MainContext::default();
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let main_loop = glib::MainLoop::new(Some(&context), false);
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pipeline.set_state(gst::State::Playing)?;
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let bus = pipeline.bus().unwrap();
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bus.add_watch({
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let main_loop = main_loop.clone();
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move |_, msg| {
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use gst::MessageView;
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let main_loop = &main_loop;
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match msg.view() {
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MessageView::Eos(..) => main_loop.quit(),
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MessageView::Error(err) => {
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gst::error!(CAT, obj: &err.src().unwrap(),
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"Error from {:?}: {} ({:?})",
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err.src().map(|s| s.path_string()),
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err.error(),
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err.debug()
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);
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main_loop.quit();
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}
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_ => (),
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};
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glib::Continue(true)
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}
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})
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.expect("Failed to add bus watch");
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main_loop.run();
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pipeline.set_state(gst::State::Null)?;
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bus.remove_watch().unwrap();
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Ok(())
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}
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