mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-06-27 02:20:41 +00:00
6fc70ee6b6
This code rework the examples to use the new 2018 edition and also rework the code to avoid using unnecessary 'extern crate' calls. The 'use extern crate gstreamer as gst', as well as the other gstramer related crates, were kept, otherwise we'd need to do it on 'Cargo.toml' but it would make it more difficult to figure out the respective crate name.
74 lines
2.2 KiB
Rust
74 lines
2.2 KiB
Rust
extern crate gstreamer as gst;
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use gst::prelude::*;
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use futures::prelude::*;
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use std::env;
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#[path = "../examples-common.rs"]
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mod examples_common;
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async fn message_handler(loop_: glib::MainLoop, bus: gst::Bus) {
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let mut messages = bus.stream();
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while let Some(msg) = messages.next().await {
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use gst::MessageView;
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// Determine whether we want to quit: on EOS or error message
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// we quit, otherwise simply continue.
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match msg.view() {
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MessageView::Eos(..) => loop_.quit(),
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MessageView::Error(err) => {
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println!(
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"Error from {:?}: {} ({:?})",
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err.get_src().map(|s| s.get_path_string()),
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err.get_error(),
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err.get_debug()
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);
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loop_.quit();
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}
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_ => (),
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}
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}
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}
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fn example_main() {
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// Get the default main context and make it also the thread default, then create
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// a main loop for it
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let ctx = glib::MainContext::default();
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ctx.push_thread_default();
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let loop_ = glib::MainLoop::new(Some(&ctx), false);
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// Read the pipeline to launch from the commandline, using the launch syntax.
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let pipeline_str = env::args().collect::<Vec<String>>()[1..].join(" ");
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gst::init().unwrap();
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// Create a pipeline from the launch-syntax given on the cli.
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let pipeline = gst::parse_launch(&pipeline_str).unwrap();
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let bus = pipeline.get_bus().unwrap();
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pipeline
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.set_state(gst::State::Playing)
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.expect("Unable to set the pipeline to the `Playing` state");
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// Spawn our message handling stream
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ctx.spawn_local(message_handler(loop_.clone(), bus));
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// And run until something is quitting the loop, i.e. an EOS
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// or error message is received above
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loop_.run();
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pipeline
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.set_state(gst::State::Null)
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.expect("Unable to set the pipeline to the `Null` state");
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ctx.pop_thread_default();
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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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