gstreamer-rs/examples/src/bin/rtpfecclient.rs

301 lines
9.2 KiB
Rust
Raw Normal View History

use gst::element_error;
use gst::prelude::*;
use std::env;
#[path = "../examples-common.rs"]
mod examples_common;
use anyhow::Error;
use derive_more::{Display, Error};
#[derive(Debug, Display, Error)]
#[display(fmt = "Missing element {}", _0)]
struct MissingElement(#[error(not(source))] &'static str);
#[derive(Debug, Display, Error)]
#[display(fmt = "No such pad {} in {}", _0, _1)]
struct NoSuchPad(#[error(not(source))] &'static str, String);
#[derive(Debug, Display, Error)]
#[display(fmt = "Unknown payload type {}", _0)]
struct UnknownPT(#[error(not(source))] u32);
#[derive(Debug, Display, Error)]
#[display(fmt = "Usage: {} (play | record) DROP_PROBABILITY", _0)]
struct UsageError(#[error(not(source))] String);
#[derive(Debug, Display, Error)]
#[display(fmt = "Received error from {}: {} (debug: {:?})", src, error, debug)]
struct ErrorMessage {
src: String,
error: String,
debug: Option<String>,
source: glib::Error,
}
fn make_element(
factory_name: &'static str,
element_name: Option<&str>,
) -> Result<gst::Element, Error> {
2019-07-11 15:50:37 +00:00
match gst::ElementFactory::make(factory_name, element_name) {
Ok(elem) => Ok(elem),
Err(_) => Err(Error::from(MissingElement(factory_name))),
}
}
#[doc(alias = "get_static_pad")]
2021-04-20 10:23:24 +00:00
fn static_pad(element: &gst::Element, pad_name: &'static str) -> Result<gst::Pad, Error> {
2021-04-20 10:24:17 +00:00
match element.static_pad(pad_name) {
Some(pad) => Ok(pad),
None => {
2021-04-11 19:39:50 +00:00
let element_name = element.name();
Err(Error::from(NoSuchPad(pad_name, element_name.to_string())))
}
}
}
#[doc(alias = "get_request_pad")]
2021-04-20 10:23:24 +00:00
fn request_pad(element: &gst::Element, pad_name: &'static str) -> Result<gst::Pad, Error> {
2021-04-20 13:12:36 +00:00
match element.request_pad_simple(pad_name) {
Some(pad) => Ok(pad),
None => {
2021-04-11 19:39:50 +00:00
let element_name = element.name();
Err(Error::from(NoSuchPad(pad_name, element_name.to_string())))
}
}
}
fn connect_rtpbin_srcpad(src_pad: &gst::Pad, sink: &gst::Element) -> Result<(), Error> {
2021-04-11 19:39:50 +00:00
let name = src_pad.name();
let split_name = name.split('_');
let split_name = split_name.collect::<Vec<&str>>();
let pt = split_name[5].parse::<u32>()?;
match pt {
96 => {
2021-04-20 10:24:17 +00:00
let sinkpad = static_pad(sink, "sink")?;
src_pad.link(&sinkpad)?;
Ok(())
}
_ => Err(Error::from(UnknownPT(pt))),
}
}
fn make_fec_decoder(rtpbin: &gst::Element, sess_id: u32) -> Result<gst::Element, Error> {
let fecdec = make_element("rtpulpfecdec", None)?;
let internal_storage = rtpbin
.emit_by_name("get-internal-storage", &[&sess_id])
.unwrap()
.unwrap()
.get::<glib::Object>()
2021-04-20 07:19:02 +00:00
.unwrap();
fecdec.set_property("storage", &internal_storage)?;
fecdec.set_property("pt", &100u32)?;
Ok(fecdec)
}
fn example_main() -> Result<(), Error> {
gst::init()?;
let args: Vec<_> = env::args().collect();
if args.len() != 3 {
return Err(Error::from(UsageError(args[0].clone())));
}
let drop_probability = args[2].parse::<f32>()?;
let pipeline = gst::Pipeline::new(None);
let src = make_element("udpsrc", None)?;
let netsim = make_element("netsim", None)?;
let rtpbin = make_element("rtpbin", None)?;
let depay = make_element("rtpvp8depay", None)?;
let dec = make_element("vp8dec", None)?;
let conv = make_element("videoconvert", None)?;
let scale = make_element("videoscale", None)?;
let filter = make_element("capsfilter", None)?;
pipeline.add_many(&[&src, &netsim, &rtpbin, &depay, &dec, &conv, &scale, &filter])?;
gst::Element::link_many(&[&depay, &dec, &conv, &scale, &filter])?;
match args[1].as_str() {
"play" => {
let sink = make_element("autovideosink", None)?;
pipeline.add(&sink)?;
filter.link(&sink)?;
}
"record" => {
let enc = make_element("x264enc", None)?;
let mux = make_element("matroskamux", None)?;
let sink = make_element("filesink", None)?;
pipeline.add_many(&[&enc, &mux, &sink])?;
gst::Element::link_many(&[&filter, &enc, &mux, &sink])?;
sink.set_property("location", &"out.mkv")?;
enc.set_property_from_str("tune", "zerolatency")?;
eprintln!("Recording to out.mkv");
}
_ => return Err(Error::from(UsageError(args[0].clone()))),
}
src.link(&netsim)?;
rtpbin.connect("new-storage", false, |values| {
let storage = values[1]
.get::<gst::Element>()
2021-04-20 07:19:02 +00:00
.expect("rtpbin \"new-storage\" signal values[1]");
storage.set_property("size-time", &250_000_000u64).unwrap();
None
})?;
rtpbin.connect("request-pt-map", false, |values| {
let pt = values[2]
2021-04-20 07:19:02 +00:00
.get::<u32>()
.expect("rtpbin \"new-storage\" signal values[2]");
match pt {
100 => Some(
gst::Caps::new_simple(
"application/x-rtp",
&[
("media", &"video"),
("clock-rate", &90000i32),
("is-fec", &true),
],
2018-10-08 12:02:23 +00:00
)
.to_value(),
),
96 => Some(
gst::Caps::new_simple(
"application/x-rtp",
&[
("media", &"video"),
("clock-rate", &90000i32),
("encoding-name", &"VP8"),
],
2018-10-08 12:02:23 +00:00
)
.to_value(),
),
_ => None,
}
})?;
rtpbin.connect("request-fec-decoder", false, |values| {
let rtpbin = values[0]
.get::<gst::Element>()
2021-04-20 07:19:02 +00:00
.expect("rtpbin \"request-fec-decoder\" signal values[0]");
let sess_id = values[1]
2021-04-20 07:19:02 +00:00
.get::<u32>()
.expect("rtpbin \"request-fec-decoder\" signal values[1]");
match make_fec_decoder(&rtpbin, sess_id) {
Ok(elem) => Some(elem.to_value()),
Err(err) => {
element_error!(
rtpbin,
gst::LibraryError::Failed,
("Failed to make FEC decoder"),
["{}", err]
);
None
}
}
})?;
2021-04-20 10:24:17 +00:00
let srcpad = static_pad(&netsim, "src")?;
let sinkpad = request_pad(&rtpbin, "recv_rtp_sink_0")?;
srcpad.link(&sinkpad)?;
let depay_weak = depay.downgrade();
rtpbin.connect_pad_added(move |rtpbin, src_pad| {
let depay = match depay_weak.upgrade() {
Some(depay) => depay,
None => return,
};
match connect_rtpbin_srcpad(src_pad, &depay) {
Ok(_) => (),
Err(err) => {
element_error!(
rtpbin,
gst::LibraryError::Failed,
("Failed to link srcpad"),
["{}", err]
);
}
}
});
let rtp_caps = gst::Caps::new_simple("application/x-rtp", &[("clock-rate", &90000i32)]);
let video_caps =
gst::Caps::new_simple("video/x-raw", &[("width", &1920i32), ("height", &1080i32)]);
src.set_property("address", &"127.0.0.1")?;
src.set_property("caps", &rtp_caps)?;
netsim.set_property("drop-probability", &drop_probability)?;
rtpbin.set_property("do-lost", &true)?;
filter.set_property("caps", &video_caps)?;
let bus = pipeline
2021-04-11 19:39:50 +00:00
.bus()
.expect("Pipeline without bus. Shouldn't happen!");
pipeline
.set_state(gst::State::Playing)
.expect("Unable to set the pipeline to the `Playing` state");
2021-04-28 22:29:13 +00:00
for msg in bus.iter_timed(gst::ClockTime::NONE) {
use gst::MessageView;
match msg.view() {
MessageView::Eos(..) => break,
MessageView::Error(err) => {
pipeline
.set_state(gst::State::Null)
.expect("Unable to set the pipeline to the `Null` state");
return Err(ErrorMessage {
2018-07-27 10:36:40 +00:00
src: msg
2021-04-11 19:39:50 +00:00
.src()
.map(|s| String::from(s.path_string()))
.unwrap_or_else(|| String::from("None")),
2021-04-11 19:39:50 +00:00
error: err.error().to_string(),
debug: err.debug(),
source: err.error(),
2018-10-08 12:02:23 +00:00
}
.into());
}
2019-02-28 08:54:32 +00:00
MessageView::StateChanged(s) => {
2021-04-11 19:39:50 +00:00
if let Some(element) = msg.src() {
if element == pipeline && s.current() == gst::State::Playing {
2018-10-08 12:02:23 +00:00
eprintln!("PLAYING");
gst::debug_bin_to_dot_file(
&pipeline,
gst::DebugGraphDetails::all(),
"client-playing",
);
}
}
2019-02-28 08:54:32 +00:00
}
_ => (),
}
}
pipeline
.set_state(gst::State::Null)
.expect("Unable to set the pipeline to the `Null` state");
Ok(())
}
fn main() {
match examples_common::run(example_main) {
Ok(r) => r,
Err(e) => eprintln!("Error! {}", e),
}
}