mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-06-01 07:08:29 +00:00
98 lines
2.6 KiB
Rust
98 lines
2.6 KiB
Rust
extern crate gstreamer as gst;
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use gst::*;
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extern crate gstreamer_app as gst_app;
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use gst_app::*;
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use std::u64;
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use std::thread;
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const WIDTH: usize = 320;
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const HEIGHT: usize = 240;
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fn main() {
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gst::init().unwrap();
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let pipeline = gst::Pipeline::new(None);
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let src = gst::ElementFactory::make("appsrc", None).unwrap();
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let videoconvert = gst::ElementFactory::make("videoconvert", None).unwrap();
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let sink = gst::ElementFactory::make("autovideosink", None).unwrap();
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pipeline.add_many(&[&src, &videoconvert, &sink]).unwrap();
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gst::Element::link_many(&[&src, &videoconvert, &sink]).unwrap();
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let appsrc = src.clone().dynamic_cast::<AppSrc>().unwrap();
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appsrc.set_caps(&Caps::new_simple(
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"video/x-raw",
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&[
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("format", &"BGRx"),
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("width", &(WIDTH as i32)),
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("height", &(HEIGHT as i32)),
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("framerate", &Fraction::new(2, 1)),
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],
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));
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appsrc.set_property_format(Format::Time);
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appsrc.set_max_bytes(1);
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appsrc.set_property_block(true);
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thread::spawn(move || {
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for i in 0..100 {
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println!("Producing frame {}", i);
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// TODO: This is not very efficient
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let mut vec = Vec::with_capacity(WIDTH * HEIGHT * 4);
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let r = if i % 2 == 0 { 0 } else { 255 };
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let g = if i % 3 == 0 { 0 } else { 255 };
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let b = if i % 5 == 0 { 0 } else { 255 };
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for _ in 0..(320 * 240) {
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vec.push(b);
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vec.push(g);
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vec.push(r);
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vec.push(0);
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}
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let mut buffer = Buffer::from_vec(vec).unwrap();
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buffer.get_mut().unwrap().set_pts(i * 500_000_000);
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if appsrc.push_buffer(buffer) != FlowReturn::Ok {
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break;
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}
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}
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appsrc.end_of_stream();
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});
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assert_ne!(
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pipeline.set_state(gst::State::Playing),
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gst::StateChangeReturn::Failure
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);
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let bus = pipeline.get_bus().unwrap();
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loop {
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let msg = match bus.timed_pop(u64::MAX) {
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None => break,
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Some(msg) => msg,
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};
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match msg.view() {
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MessageView::Eos(..) => break,
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MessageView::Error(err) => {
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println!(
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"Error from {}: {} ({:?})",
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msg.get_src().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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break;
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}
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_ => (),
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}
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}
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assert_ne!(
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pipeline.set_state(gst::State::Null),
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gst::StateChangeReturn::Failure
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);
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}
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