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Add basic-tutorial-7.rs

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Fixes https://github.com/sdroege/gstreamer-rs/pull/42
This commit is contained in:
Thibault Saunier 2017-10-12 12:46:06 +02:00 committed by Sebastian Dröge
parent 1f16a39ca4
commit 08c30a0566
1 changed files with 78 additions and 0 deletions
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78
tutorials/src/bin/basic-tutorial-7.rs Normal file
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extern crate gstreamer as gst;
use gst::prelude::*;
fn main() {
// Initialize GStreamer
if let Err(err) = gst::init() {
eprintln!("Failed to initialize Gst: {}", err);
return;
}
let audio_source = gst::ElementFactory::make("audiotestsrc", "audio_source").unwrap();
let tee = gst::ElementFactory::make("tee", "tee").unwrap();
let audio_queue = gst::ElementFactory::make("queue", "audio_queue").unwrap();
let audio_convert = gst::ElementFactory::make("audioconvert", "audio_convert").unwrap();
let audio_resample = gst::ElementFactory::make ("audioresample", "audio_resample").unwrap();
let audio_sink = gst::ElementFactory::make("autoaudiosink", "audio_sink").unwrap();
let video_queue = gst::ElementFactory::make("queue", "video_queue").unwrap();
let visual = gst::ElementFactory::make("wavescope", "visual").unwrap();
let video_convert = gst::ElementFactory::make("videoconvert", "video_convert").unwrap();
let video_sink = gst::ElementFactory::make ("autovideosink", "video_sink").unwrap();
let pipeline = gst::Pipeline::new("test-pipeline");
audio_source.set_property("freq", &215.0).unwrap();
visual.set_property_from_str("shader", "none");
visual.set_property_from_str("style", "lines");
pipeline.add_many(&[&audio_source, &tee, &audio_queue, &audio_convert,
&audio_resample, &audio_sink, &video_queue, &visual,
&video_convert, &video_sink]).unwrap();
gst::Element::link_many(&[&audio_source, &tee]).unwrap();
gst::Element::link_many(&[&audio_queue, &audio_convert, &audio_resample, &audio_sink]).unwrap();
gst::Element::link_many(&[&video_queue, &visual, &video_convert, &video_sink]).unwrap();
let tee_audio_pad = tee.get_request_pad("src_%u").unwrap();
println!("Obtained request pad {} for audio branch", tee_audio_pad.get_name());
let queue_audio_pad = audio_queue.get_static_pad("sink").unwrap();
tee_audio_pad.link(&queue_audio_pad);
let tee_video_pad = tee.get_request_pad("src_%u").unwrap();
println!("Obtained request pad {} for video branch", tee_video_pad.get_name());
let queue_video_pad = video_queue.get_static_pad("sink").unwrap();
tee_video_pad.link(&queue_video_pad);
let ret = pipeline.set_state(gst::State::Playing);
assert_ne!(
ret,
gst::StateChangeReturn::Failure,
"Unable to set the pipeline to the Playing state."
);
let bus = pipeline.get_bus().unwrap();
while let Some(msg) = bus.timed_pop(gst::CLOCK_TIME_NONE) {
use gst::MessageView;
match msg.view() {
MessageView::Error(err) => {
eprintln!(
"Error received from element {}: {}",
msg.get_src().get_path_string(),
err.get_error()
);
eprintln!("Debugging information: {:?}", err.get_debug());
break;
}
MessageView::Eos(..) => break,
_ => (),
}
}
pipeline.set_state(gst::State::Null);
let ret = pipeline.set_state(gst::State::Null);
assert_ne!(
ret,
gst::StateChangeReturn::Failure,
"Unable to set the pipeline to the Null state."
);
}