mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-06-07 08:49:23 +00:00
79 lines
3.2 KiB
Rust
79 lines
3.2 KiB
Rust
extern crate gstreamer as gst;
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use gst::prelude::*;
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fn main() {
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// Initialize GStreamer
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if let Err(err) = gst::init() {
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eprintln!("Failed to initialize Gst: {}", err);
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return;
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}
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let audio_source = gst::ElementFactory::make("audiotestsrc", "audio_source").unwrap();
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let tee = gst::ElementFactory::make("tee", "tee").unwrap();
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let audio_queue = gst::ElementFactory::make("queue", "audio_queue").unwrap();
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let audio_convert = gst::ElementFactory::make("audioconvert", "audio_convert").unwrap();
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let audio_resample = gst::ElementFactory::make ("audioresample", "audio_resample").unwrap();
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let audio_sink = gst::ElementFactory::make("autoaudiosink", "audio_sink").unwrap();
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let video_queue = gst::ElementFactory::make("queue", "video_queue").unwrap();
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let visual = gst::ElementFactory::make("wavescope", "visual").unwrap();
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let video_convert = gst::ElementFactory::make("videoconvert", "video_convert").unwrap();
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let video_sink = gst::ElementFactory::make ("autovideosink", "video_sink").unwrap();
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let pipeline = gst::Pipeline::new("test-pipeline");
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audio_source.set_property("freq", &215.0).unwrap();
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visual.set_property_from_str("shader", "none");
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visual.set_property_from_str("style", "lines");
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pipeline.add_many(&[&audio_source, &tee, &audio_queue, &audio_convert,
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&audio_resample, &audio_sink, &video_queue, &visual,
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&video_convert, &video_sink]).unwrap();
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gst::Element::link_many(&[&audio_source, &tee]).unwrap();
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gst::Element::link_many(&[&audio_queue, &audio_convert, &audio_resample, &audio_sink]).unwrap();
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gst::Element::link_many(&[&video_queue, &visual, &video_convert, &video_sink]).unwrap();
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let tee_audio_pad = tee.get_request_pad("src_%u").unwrap();
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println!("Obtained request pad {} for audio branch", tee_audio_pad.get_name());
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let queue_audio_pad = audio_queue.get_static_pad("sink").unwrap();
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tee_audio_pad.link(&queue_audio_pad);
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let tee_video_pad = tee.get_request_pad("src_%u").unwrap();
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println!("Obtained request pad {} for video branch", tee_video_pad.get_name());
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let queue_video_pad = video_queue.get_static_pad("sink").unwrap();
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tee_video_pad.link(&queue_video_pad);
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let ret = pipeline.set_state(gst::State::Playing);
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assert_ne!(
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ret,
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gst::StateChangeReturn::Failure,
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"Unable to set the pipeline to the Playing state."
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);
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let bus = pipeline.get_bus().unwrap();
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while let Some(msg) = bus.timed_pop(gst::CLOCK_TIME_NONE) {
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use gst::MessageView;
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match msg.view() {
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MessageView::Error(err) => {
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eprintln!(
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"Error received from element {}: {}",
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msg.get_src().get_path_string(),
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err.get_error()
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);
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eprintln!("Debugging information: {:?}", err.get_debug());
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break;
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}
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MessageView::Eos(..) => break,
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_ => (),
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}
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}
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pipeline.set_state(gst::State::Null);
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let ret = pipeline.set_state(gst::State::Null);
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assert_ne!(
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ret,
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gst::StateChangeReturn::Failure,
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"Unable to set the pipeline to the Null state."
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);
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}
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