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2022890766
The 'failure' crate has been stale for quite some time and better alternatives has been developed since its introduction. We choose the 'anyhow' and 'derive_more' to replace it.
90 lines
2.5 KiB
Rust
90 lines
2.5 KiB
Rust
// This example shows how to use the GstPlayer API.
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// The GstPlayer API is a convenience API to allow implement playback applications
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// without having to write too much code.
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// Most of the tasks a player needs to support (such as seeking and switching
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// audio / subtitle streams or changing the volume) are all supported by simple
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// one-line function calls on the GstPlayer.
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extern crate gstreamer as gst;
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use gst::prelude::*;
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extern crate gstreamer_player as gst_player;
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use std::env;
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use std::sync::{Arc, Mutex};
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use anyhow::Error;
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#[allow(unused_imports)]
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#[path = "../examples-common.rs"]
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mod examples_common;
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fn main_loop(uri: &str) -> Result<(), Error> {
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gst::init()?;
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let main_loop = glib::MainLoop::new(None, false);
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let dispatcher = gst_player::PlayerGMainContextSignalDispatcher::new(None);
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let player = gst_player::Player::new(
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None,
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Some(&dispatcher.upcast::<gst_player::PlayerSignalDispatcher>()),
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);
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// Tell the player what uri to play.
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player.set_uri(uri);
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let error = Arc::new(Mutex::new(Ok(())));
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let main_loop_clone = main_loop.clone();
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// Connect to the player's "end-of-stream" signal, which will tell us when the
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// currently played media stream reached its end.
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player.connect_end_of_stream(move |player| {
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let main_loop = &main_loop_clone;
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player.stop();
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main_loop.quit();
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});
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let main_loop_clone = main_loop.clone();
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let error_clone = Arc::clone(&error);
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// Connect to the player's "error" signal, which will inform us about eventual
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// errors (such as failing to retrieve a http stream).
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player.connect_error(move |player, err| {
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let main_loop = &main_loop_clone;
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let error = &error_clone;
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*error.lock().unwrap() = Err(err.clone());
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player.stop();
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main_loop.quit();
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});
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player.play();
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main_loop.run();
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let guard = error.as_ref().lock().unwrap();
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guard.clone().map_err(|e| e.into())
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}
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#[allow(unused_variables)]
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fn example_main() {
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let args: Vec<_> = env::args().collect();
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let uri: &str = if args.len() == 2 {
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args[1].as_ref()
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} else {
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println!("Usage: player uri");
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std::process::exit(-1)
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};
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match main_loop(uri) {
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Ok(r) => r,
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Err(e) => eprintln!("Error! {}", e),
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}
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}
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fn main() {
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// tutorials_common::run is only required to set up the application environent on macOS
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// (but not necessary in normal Cocoa applications where this is set up autmatically)
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examples_common::run(example_main);
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}
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