mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-09-29 23:32:16 +00:00
7cd2945268
Also create a proper stream id
649 lines
20 KiB
Rust
649 lines
20 KiB
Rust
// Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the
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// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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// Boston, MA 02110-1335, USA.
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use glib;
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use glib::prelude::*;
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use gst;
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use gst::prelude::*;
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use gst_plugin::properties::*;
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use gst_plugin::object::*;
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use gst_plugin::element::*;
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use std::sync::Mutex;
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use std::u16;
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use tokio::net;
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use either::Either;
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use rand;
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use iocontext::*;
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use udpsocket::*;
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const DEFAULT_ADDRESS: Option<&'static str> = Some("127.0.0.1");
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const DEFAULT_PORT: u32 = 5000;
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const DEFAULT_CAPS: Option<gst::Caps> = None;
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const DEFAULT_MTU: u32 = 1500;
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const DEFAULT_CONTEXT: &'static str = "";
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const DEFAULT_CONTEXT_THREADS: i32 = 0;
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const DEFAULT_CONTEXT_WAIT: u32 = 0;
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#[derive(Debug, Clone)]
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struct Settings {
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address: Option<String>,
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port: u32,
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caps: Option<gst::Caps>,
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mtu: u32,
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context: String,
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context_threads: i32,
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context_wait: u32,
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}
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impl Default for Settings {
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fn default() -> Self {
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Settings {
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address: DEFAULT_ADDRESS.map(Into::into),
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port: DEFAULT_PORT,
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caps: DEFAULT_CAPS,
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mtu: DEFAULT_MTU,
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context: DEFAULT_CONTEXT.into(),
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context_threads: DEFAULT_CONTEXT_THREADS,
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context_wait: DEFAULT_CONTEXT_WAIT,
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}
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}
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}
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static PROPERTIES: [Property; 7] = [
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Property::String(
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"address",
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"Address",
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"Address/multicast group to listen on",
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DEFAULT_ADDRESS,
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PropertyMutability::ReadWrite,
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),
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Property::UInt(
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"port",
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"Port",
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"Port to listen on",
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(0, u16::MAX as u32),
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DEFAULT_PORT,
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PropertyMutability::ReadWrite,
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),
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Property::Boxed(
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"caps",
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"Caps",
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"Caps to use",
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gst::Caps::static_type,
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PropertyMutability::ReadWrite,
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),
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Property::UInt(
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"mtu",
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"MTU",
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"MTU",
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(0, u16::MAX as u32),
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DEFAULT_MTU,
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PropertyMutability::ReadWrite,
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),
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Property::String(
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"context",
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"Context",
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"Context name to share threads with",
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Some(DEFAULT_CONTEXT),
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PropertyMutability::ReadWrite,
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),
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Property::Int(
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"context-threads",
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"Context Threads",
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"Number of threads for the context thread-pool if we create it",
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(-1, u16::MAX as i32),
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DEFAULT_CONTEXT_THREADS,
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PropertyMutability::ReadWrite,
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),
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Property::UInt(
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"context-wait",
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"Context Wait",
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"Throttle poll loop to run at most once every this many ms",
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(0, 1000),
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DEFAULT_CONTEXT_WAIT,
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PropertyMutability::ReadWrite,
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),
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];
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struct State {
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io_context: Option<IOContext>,
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socket: Option<Socket>,
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need_initial_events: bool,
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configured_caps: Option<gst::Caps>,
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}
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impl Default for State {
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fn default() -> State {
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State {
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io_context: None,
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socket: None,
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need_initial_events: true,
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configured_caps: None,
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}
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}
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}
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struct UdpSrc {
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cat: gst::DebugCategory,
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src_pad: gst::Pad,
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state: Mutex<State>,
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settings: Mutex<Settings>,
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}
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impl UdpSrc {
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fn class_init(klass: &mut ElementClass) {
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klass.set_metadata(
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"Thread-sharing UDP source",
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"Source/Network",
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"Receives data over the network via UDP",
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"Sebastian Dröge <sebastian@centricular.com>",
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);
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let caps = gst::Caps::new_any();
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let src_pad_template = gst::PadTemplate::new(
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"src",
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gst::PadDirection::Src,
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gst::PadPresence::Always,
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&caps,
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);
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klass.add_pad_template(src_pad_template);
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klass.install_properties(&PROPERTIES);
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}
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fn init(element: &Element) -> Box<ElementImpl<Element>> {
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let templ = element.get_pad_template("src").unwrap();
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let src_pad = gst::Pad::new_from_template(&templ, "src");
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src_pad.set_event_function(|pad, parent, event| {
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UdpSrc::catch_panic_pad_function(
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parent,
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|| false,
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|udpsrc, element| udpsrc.src_event(pad, element, event),
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)
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});
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src_pad.set_query_function(|pad, parent, query| {
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UdpSrc::catch_panic_pad_function(
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parent,
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|| false,
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|udpsrc, element| udpsrc.src_query(pad, element, query),
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)
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});
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element.add_pad(&src_pad).unwrap();
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Box::new(Self {
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cat: gst::DebugCategory::new(
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"ts-udpsrc",
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gst::DebugColorFlags::empty(),
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"Thread-sharing UDP source",
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),
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src_pad: src_pad,
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state: Mutex::new(State::default()),
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settings: Mutex::new(Settings::default()),
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})
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}
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fn catch_panic_pad_function<T, F: FnOnce(&Self, &Element) -> T, G: FnOnce() -> T>(
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parent: &Option<gst::Object>,
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fallback: G,
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f: F,
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) -> T {
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let element = parent
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.as_ref()
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.cloned()
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.unwrap()
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.downcast::<Element>()
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.unwrap();
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let udpsrc = element.get_impl().downcast_ref::<UdpSrc>().unwrap();
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element.catch_panic(fallback, |element| f(udpsrc, element))
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}
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fn src_event(&self, pad: &gst::Pad, element: &Element, event: gst::Event) -> bool {
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use gst::EventView;
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gst_log!(self.cat, obj: pad, "Handling event {:?}", event);
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let ret = match event.view() {
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EventView::FlushStart(..) => {
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let _ = self.stop(element);
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true
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}
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EventView::FlushStop(..) => {
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let (ret, state, pending) = element.get_state(0.into());
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if ret == gst::StateChangeReturn::Success && state == gst::State::Playing
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|| ret == gst::StateChangeReturn::Async && pending == gst::State::Playing
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{
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let _ = self.start(element);
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}
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true
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}
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EventView::Reconfigure(..) => true,
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EventView::Latency(..) => true,
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_ => false,
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};
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if ret {
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gst_log!(self.cat, obj: pad, "Handled event {:?}", event);
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} else {
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gst_log!(self.cat, obj: pad, "Didn't handle event {:?}", event);
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}
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ret
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}
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fn src_query(&self, pad: &gst::Pad, _element: &Element, query: &mut gst::QueryRef) -> bool {
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use gst::QueryView;
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gst_log!(self.cat, obj: pad, "Handling query {:?}", query);
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let ret = match query.view_mut() {
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QueryView::Latency(ref mut q) => {
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q.set(true, 0.into(), 0.into());
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true
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}
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QueryView::Scheduling(ref mut q) => {
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q.set(gst::SchedulingFlags::SEQUENTIAL, 1, -1, 0);
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q.add_scheduling_modes(&[gst::PadMode::Push]);
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true
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}
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QueryView::Caps(ref mut q) => {
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let state = self.state.lock().unwrap();
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let caps = if let Some(ref caps) = state.configured_caps {
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q.get_filter()
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.map(|f| f.intersect_with_mode(caps, gst::CapsIntersectMode::First))
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.unwrap_or(caps.clone())
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} else {
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q.get_filter()
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.map(|f| f.to_owned())
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.unwrap_or(gst::Caps::new_any())
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};
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q.set_result(&caps);
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true
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}
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_ => false,
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};
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if ret {
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gst_log!(self.cat, obj: pad, "Handled query {:?}", query);
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} else {
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gst_log!(self.cat, obj: pad, "Didn't handle query {:?}", query);
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}
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ret
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}
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fn push_buffer(&self, element: &Element, buffer: gst::Buffer) -> Result<(), gst::FlowError> {
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let mut events = Vec::new();
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let mut state = self.state.lock().unwrap();
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if state.need_initial_events {
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gst_debug!(self.cat, obj: element, "Pushing initial events");
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let stream_id = format!("{:08x}{:08x}", rand::random::<u32>(), rand::random::<u32>());
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events.push(gst::Event::new_stream_start(&stream_id).build());
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if let Some(ref caps) = self.settings.lock().unwrap().caps {
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events.push(gst::Event::new_caps(&caps).build());
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state.configured_caps = Some(caps.clone());
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}
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events.push(
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gst::Event::new_segment(&gst::FormattedSegment::<gst::format::Time>::new()).build(),
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);
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state.need_initial_events = false;
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}
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drop(state);
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for event in events {
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self.src_pad.push_event(event);
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}
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match self.src_pad.push(buffer).into_result() {
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Ok(_) => {
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gst_log!(self.cat, obj: element, "Successfully pushed buffer");
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Ok(())
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}
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Err(gst::FlowError::Flushing) => {
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gst_debug!(self.cat, obj: element, "Flushing");
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let state = self.state.lock().unwrap();
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if let Some(ref socket) = state.socket {
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socket.pause();
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}
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Ok(())
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}
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Err(gst::FlowError::Eos) => {
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gst_debug!(self.cat, obj: element, "EOS");
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let state = self.state.lock().unwrap();
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if let Some(ref socket) = state.socket {
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socket.pause();
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}
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Ok(())
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}
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Err(err) => {
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gst_error!(self.cat, obj: element, "Got error {}", err);
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gst_element_error!(
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element,
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gst::StreamError::Failed,
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("Internal data stream error"),
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["streaming stopped, reason {}", err]
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);
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Err(gst::FlowError::CustomError)
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}
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}
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}
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fn prepare(&self, element: &Element) -> Result<(), ()> {
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use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
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gst_debug!(self.cat, obj: element, "Preparing");
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let settings = self.settings.lock().unwrap().clone();
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let mut state = self.state.lock().unwrap();
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// TODO: Error handling
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let io_context = IOContext::new(
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&settings.context,
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settings.context_threads as isize,
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settings.context_wait,
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);
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let addr: IpAddr = match settings.address {
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None => return Err(()),
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Some(ref addr) => match addr.parse() {
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Err(_) => return Err(()),
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Ok(addr) => addr,
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},
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};
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let port = settings.port;
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// TODO: TTL, multicast loopback, etc
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let socket = if addr.is_multicast() {
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// TODO: Use ::unspecified() constructor once stable
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let bind_addr = if addr.is_ipv4() {
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IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0))
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} else {
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IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0))
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};
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let saddr = SocketAddr::new(bind_addr, port as u16);
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gst_debug!(
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self.cat,
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obj: element,
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"Binding to {:?} for multicast group {:?}",
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saddr,
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addr
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);
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let socket = net::UdpSocket::bind(&saddr).unwrap();
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// TODO: Multicast interface configuration, going to be tricky
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match addr {
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IpAddr::V4(addr) => {
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socket
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.join_multicast_v4(&addr, &Ipv4Addr::new(0, 0, 0, 0))
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.unwrap();
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}
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IpAddr::V6(addr) => {
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socket.join_multicast_v6(&addr, 0).unwrap();
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}
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}
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socket
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} else {
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let saddr = SocketAddr::new(addr, port as u16);
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gst_debug!(self.cat, obj: element, "Binding to {:?}", saddr);
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let socket = net::UdpSocket::bind(&saddr).unwrap();
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socket
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};
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let buffer_pool = gst::BufferPool::new();
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let mut config = buffer_pool.get_config();
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config.set_params(None, settings.mtu, 0, 0);
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buffer_pool.set_config(config).unwrap();
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let socket = Socket::new(&element.clone().upcast(), socket, buffer_pool);
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let element_clone = element.clone();
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let element_clone2 = element.clone();
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socket.schedule(
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&io_context,
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move |buffer| {
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let udpsrc = element_clone.get_impl().downcast_ref::<UdpSrc>().unwrap();
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udpsrc.push_buffer(&element_clone, buffer)
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},
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move |err| {
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let udpsrc = element_clone2.get_impl().downcast_ref::<UdpSrc>().unwrap();
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gst_error!(udpsrc.cat, obj: &element_clone2, "Got error {}", err);
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match err {
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Either::Left(gst::FlowError::CustomError) => (),
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Either::Left(err) => {
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gst_element_error!(
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element_clone2,
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gst::StreamError::Failed,
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("Internal data stream error"),
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["streaming stopped, reason {}", err]
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);
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}
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Either::Right(err) => {
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gst_element_error!(
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element_clone2,
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gst::StreamError::Failed,
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("I/O error"),
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["streaming stopped, I/O error {}", err]
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);
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}
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}
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},
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);
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state.socket = Some(socket);
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state.io_context = Some(io_context);
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gst_debug!(self.cat, obj: element, "Prepared");
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Ok(())
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}
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fn unprepare(&self, element: &Element) -> Result<(), ()> {
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gst_debug!(self.cat, obj: element, "Unpreparing");
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let mut state = self.state.lock().unwrap();
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if let Some(ref socket) = state.socket {
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socket.shutdown();
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}
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*state = State::default();
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gst_debug!(self.cat, obj: element, "Unprepared");
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Ok(())
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}
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fn start(&self, element: &Element) -> Result<(), ()> {
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gst_debug!(self.cat, obj: element, "Starting");
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let state = self.state.lock().unwrap();
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if let Some(ref socket) = state.socket {
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socket.unpause(element.get_clock().unwrap(), element.get_base_time());
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}
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gst_debug!(self.cat, obj: element, "Started");
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Ok(())
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}
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fn stop(&self, element: &Element) -> Result<(), ()> {
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gst_debug!(self.cat, obj: element, "Stopping");
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let state = self.state.lock().unwrap();
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if let Some(ref socket) = state.socket {
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socket.pause();
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}
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gst_debug!(self.cat, obj: element, "Stopped");
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Ok(())
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}
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}
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impl ObjectImpl<Element> for UdpSrc {
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fn set_property(&self, _obj: &glib::Object, id: u32, value: &glib::Value) {
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let prop = &PROPERTIES[id as usize];
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match *prop {
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Property::String("address", ..) => {
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let mut settings = self.settings.lock().unwrap();
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settings.address = value.get();
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}
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Property::UInt("port", ..) => {
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let mut settings = self.settings.lock().unwrap();
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settings.port = value.get().unwrap();
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}
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Property::Boxed("caps", ..) => {
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let mut settings = self.settings.lock().unwrap();
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settings.caps = value.get();
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}
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Property::UInt("mtu", ..) => {
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let mut settings = self.settings.lock().unwrap();
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settings.mtu = value.get().unwrap();
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}
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Property::String("context", ..) => {
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let mut settings = self.settings.lock().unwrap();
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settings.context = value.get().unwrap_or_else(|| "".into());
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}
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Property::Int("context-threads", ..) => {
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let mut settings = self.settings.lock().unwrap();
|
|
settings.context_threads = value.get().unwrap();
|
|
}
|
|
Property::UInt("context-wait", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.context_wait = value.get().unwrap();
|
|
}
|
|
_ => unimplemented!(),
|
|
}
|
|
}
|
|
|
|
fn get_property(&self, _obj: &glib::Object, id: u32) -> Result<glib::Value, ()> {
|
|
let prop = &PROPERTIES[id as usize];
|
|
|
|
match *prop {
|
|
Property::String("address", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.address.to_value())
|
|
}
|
|
Property::UInt("port", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.port.to_value())
|
|
}
|
|
Property::Boxed("caps", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.caps.to_value())
|
|
}
|
|
Property::UInt("mtu", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.mtu.to_value())
|
|
}
|
|
Property::String("context", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.context.to_value())
|
|
}
|
|
Property::Int("context-threads", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.context_threads.to_value())
|
|
}
|
|
Property::UInt("context-wait", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.context_wait.to_value())
|
|
}
|
|
_ => unimplemented!(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ElementImpl<Element> for UdpSrc {
|
|
fn change_state(
|
|
&self,
|
|
element: &Element,
|
|
transition: gst::StateChange,
|
|
) -> gst::StateChangeReturn {
|
|
gst_trace!(self.cat, obj: element, "Changing state {:?}", transition);
|
|
|
|
match transition {
|
|
gst::StateChange::NullToReady => match self.prepare(element) {
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
Ok(_) => (),
|
|
},
|
|
gst::StateChange::PlayingToPaused => match self.stop(element) {
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
Ok(_) => (),
|
|
},
|
|
gst::StateChange::ReadyToNull => match self.unprepare(element) {
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
Ok(_) => (),
|
|
},
|
|
_ => (),
|
|
}
|
|
|
|
let mut ret = element.parent_change_state(transition);
|
|
if ret == gst::StateChangeReturn::Failure {
|
|
return ret;
|
|
}
|
|
|
|
match transition {
|
|
gst::StateChange::ReadyToPaused => {
|
|
ret = gst::StateChangeReturn::NoPreroll;
|
|
}
|
|
gst::StateChange::PausedToPlaying => match self.start(element) {
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
Ok(_) => (),
|
|
},
|
|
gst::StateChange::PausedToReady => {
|
|
let mut state = self.state.lock().unwrap();
|
|
state.need_initial_events = true;
|
|
}
|
|
_ => (),
|
|
}
|
|
|
|
ret
|
|
}
|
|
}
|
|
|
|
struct UdpSrcStatic;
|
|
|
|
impl ImplTypeStatic<Element> for UdpSrcStatic {
|
|
fn get_name(&self) -> &str {
|
|
"UdpSrc"
|
|
}
|
|
|
|
fn new(&self, element: &Element) -> Box<ElementImpl<Element>> {
|
|
UdpSrc::init(element)
|
|
}
|
|
|
|
fn class_init(&self, klass: &mut ElementClass) {
|
|
UdpSrc::class_init(klass);
|
|
}
|
|
}
|
|
|
|
pub fn register(plugin: &gst::Plugin) {
|
|
let udpsrc_static = UdpSrcStatic;
|
|
let type_ = register_type(udpsrc_static);
|
|
gst::Element::register(plugin, "ts-udpsrc", 0, type_);
|
|
}
|