mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-09-29 23:32:16 +00:00
1075 lines
34 KiB
Rust
1075 lines
34 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 glib::subclass;
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use glib::subclass::prelude::*;
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use gst;
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use gst::prelude::*;
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use gst::subclass::prelude::*;
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use gio;
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use gio_ffi;
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use gobject_ffi;
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use std::io;
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use std::sync::Mutex;
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use std::u16;
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use futures;
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use futures::future;
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use futures::{Future, Poll};
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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 net2;
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#[cfg(unix)]
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use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};
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#[cfg(windows)]
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use std::os::windows::io::{AsRawSocket, FromRawSocket, IntoRawFd, RawSocket};
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use iocontext::*;
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use socket::*;
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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_REUSE: bool = true;
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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_SOCKET: Option<GioSocketWrapper> = None;
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const DEFAULT_USED_SOCKET: Option<GioSocketWrapper> = None;
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const DEFAULT_CONTEXT: &'static str = "";
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const DEFAULT_CONTEXT_WAIT: u32 = 0;
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// Send/Sync struct for passing around a gio::Socket
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// and getting the raw fd from it
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//
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// gio::Socket is not Send/Sync as it's generally unsafe
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// to access it from multiple threads. Getting the underlying raw
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// fd is safe though, as is receiving/sending from two different threads
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#[derive(Debug)]
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struct GioSocketWrapper {
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socket: *mut gio_ffi::GSocket,
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}
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unsafe impl Send for GioSocketWrapper {}
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unsafe impl Sync for GioSocketWrapper {}
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impl GioSocketWrapper {
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fn new(socket: &gio::Socket) -> Self {
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use glib::translate::*;
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Self {
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socket: socket.to_glib_full(),
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}
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}
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fn as_socket(&self) -> gio::Socket {
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unsafe {
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use glib::translate::*;
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from_glib_none(self.socket)
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}
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}
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#[cfg(unix)]
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fn get<T: FromRawFd>(&self) -> T {
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use libc;
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unsafe { FromRawFd::from_raw_fd(libc::dup(gio_ffi::g_socket_get_fd(self.socket))) }
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}
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#[cfg(windows)]
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fn get<T: FromRawSocket>(&self) -> T {
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unsafe {
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FromRawSocket::from_raw_socket(dup_socket(ffi::g_socket_get_fd(self.socket) as _) as _)
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}
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}
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}
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impl Clone for GioSocketWrapper {
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fn clone(&self) -> Self {
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Self {
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socket: unsafe { gobject_ffi::g_object_ref(self.socket as *mut _) as *mut _ },
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}
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}
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}
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impl Drop for GioSocketWrapper {
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fn drop(&mut self) {
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unsafe {
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gobject_ffi::g_object_unref(self.socket as *mut _);
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}
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}
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}
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#[cfg(windows)]
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unsafe fn dup_socket(socket: usize) -> usize {
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use std::mem;
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use winapi::shared::minwindef::DWORD;
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use winapi::shared::ws2def;
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use winapi::um::processthreadsapi;
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use winapi::um::winsock2;
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use winapi::um::winsock2;
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let mut proto_info = mem::zeroed();
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let ret = winsock2::WSADuplicateSocketA(
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socket,
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processthreadsapi::GetCurrentProcess(),
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&mut proto_info,
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);
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assert_eq!(ret, 0);
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winsock2::WSASocketA(
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ws2def::AF_INET,
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ws2def::SOCK_DGRAM,
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ws2def::IPPROTO_UDP,
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&mut proto_info,
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0,
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0,
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);
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}
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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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reuse: bool,
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caps: Option<gst::Caps>,
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mtu: u32,
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socket: Option<GioSocketWrapper>,
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used_socket: Option<GioSocketWrapper>,
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context: String,
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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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reuse: DEFAULT_REUSE,
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caps: DEFAULT_CAPS,
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mtu: DEFAULT_MTU,
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socket: DEFAULT_SOCKET,
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used_socket: DEFAULT_USED_SOCKET,
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context: DEFAULT_CONTEXT.into(),
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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: [subclass::Property; 9] = [
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subclass::Property("address", |name| {
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glib::ParamSpec::string(
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name,
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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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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("port", |name| {
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glib::ParamSpec::uint(
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name,
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"Port",
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"Port to listen on",
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0,
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u16::MAX as u32,
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DEFAULT_PORT,
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("reuse", |name| {
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glib::ParamSpec::boolean(
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name,
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"Reuse",
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"Allow reuse of the port",
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DEFAULT_REUSE,
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("caps", |name| {
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glib::ParamSpec::boxed(
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name,
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"Caps",
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"Caps to use",
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gst::Caps::static_type(),
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("mtu", |name| {
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glib::ParamSpec::uint(
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name,
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"MTU",
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"MTU",
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0,
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u16::MAX as u32,
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DEFAULT_MTU,
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("socket", |name| {
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glib::ParamSpec::object(
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name,
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"Socket",
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"Socket to use for UDP reception. (None == allocate)",
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gio::Socket::static_type(),
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("used-socket", |name| {
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glib::ParamSpec::object(
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name,
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"Used Socket",
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"Socket currently in use for UDP reception. (None = no socket)",
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gio::Socket::static_type(),
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glib::ParamFlags::READABLE,
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)
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}),
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subclass::Property("context", |name| {
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glib::ParamSpec::string(
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name,
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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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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("context-wait", |name| {
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glib::ParamSpec::uint(
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name,
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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,
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1000,
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DEFAULT_CONTEXT_WAIT,
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glib::ParamFlags::READWRITE,
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)
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}),
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];
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pub struct UdpReader {
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socket: net::UdpSocket,
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}
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impl UdpReader {
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fn new(socket: net::UdpSocket) -> Self {
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Self { socket }
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}
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}
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impl SocketRead for UdpReader {
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const DO_TIMESTAMP: bool = true;
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fn poll_read(&mut self, buf: &mut [u8]) -> Poll<usize, io::Error> {
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self.socket.poll_recv(buf)
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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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pending_future_id: Option<PendingFutureId>,
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socket: Option<Socket<UdpReader>>,
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need_initial_events: bool,
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configured_caps: Option<gst::Caps>,
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pending_future_cancel: Option<futures::sync::oneshot::Sender<()>>,
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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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pending_future_id: 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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pending_future_cancel: 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 src_event(&self, pad: &gst::Pad, element: &gst::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(
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&self,
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pad: &gst::Pad,
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_element: &gst::Element,
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query: &mut gst::QueryRef,
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) -> 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 create_io_context_event(state: &State) -> Option<gst::Event> {
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if let (&Some(ref pending_future_id), &Some(ref io_context)) =
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(&state.pending_future_id, &state.io_context)
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{
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let s = gst::Structure::new(
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"ts-io-context",
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&[
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("io-context", &io_context),
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("pending-future-id", &*pending_future_id),
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],
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);
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Some(gst::Event::new_custom_downstream_sticky(s).build())
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} else {
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None
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}
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}
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fn push_buffer(
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&self,
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element: &gst::Element,
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buffer: gst::Buffer,
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) -> future::Either<
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Box<Future<Item = (), Error = gst::FlowError> + Send + 'static>,
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future::FutureResult<(), gst::FlowError>,
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> {
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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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if let Some(event) = Self::create_io_context_event(&state) {
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events.push(event);
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// Get rid of reconfigure flag
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self.src_pad.check_reconfigure();
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}
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state.need_initial_events = false;
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} else if self.src_pad.check_reconfigure() {
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if let Some(event) = Self::create_io_context_event(&state) {
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events.push(event);
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}
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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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let res = 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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match res {
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Ok(()) => {
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let mut state = self.state.lock().unwrap();
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if let State {
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io_context: Some(ref io_context),
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pending_future_id: Some(ref pending_future_id),
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ref mut pending_future_cancel,
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..
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} = *state
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{
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let (cancel, future) = io_context.drain_pending_futures(*pending_future_id);
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*pending_future_cancel = cancel;
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future
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} else {
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future::Either::B(future::ok(()))
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}
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}
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Err(err) => future::Either::B(future::err(err)),
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}
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}
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|
|
fn prepare(&self, element: &gst::Element) -> Result<(), gst::ErrorMessage> {
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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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let io_context =
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IOContext::new(&settings.context, settings.context_wait).map_err(|err| {
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gst_error_msg!(
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gst::ResourceError::OpenRead,
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["Failed to create IO context: {}", err]
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)
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})?;
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|
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let socket = if let Some(ref wrapped_socket) = settings.socket {
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use std::net::UdpSocket;
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|
|
|
let mut socket: UdpSocket;
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|
|
|
#[cfg(unix)]
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{
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socket = wrapped_socket.get()
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|
}
|
|
#[cfg(windows)]
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{
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socket = wrapped_socket.get()
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}
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|
|
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let socket =
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net::UdpSocket::from_std(socket, io_context.reactor_handle()).map_err(|err| {
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gst_error_msg!(
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gst::ResourceError::OpenRead,
|
|
["Failed to setup socket for tokio: {}", err]
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)
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|
})?;
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|
|
self.settings.lock().unwrap().used_socket = Some(wrapped_socket.clone());
|
|
|
|
socket
|
|
} else {
|
|
let addr: IpAddr = match settings.address {
|
|
None => {
|
|
return Err(gst_error_msg!(
|
|
gst::ResourceError::Settings,
|
|
["No address set"]
|
|
));
|
|
}
|
|
Some(ref addr) => match addr.parse() {
|
|
Err(err) => {
|
|
return Err(gst_error_msg!(
|
|
gst::ResourceError::Settings,
|
|
["Invalid address '{}' set: {}", addr, err]
|
|
));
|
|
}
|
|
Ok(addr) => addr,
|
|
},
|
|
};
|
|
let port = settings.port;
|
|
|
|
// TODO: TTL, multicast loopback, etc
|
|
let saddr = if addr.is_multicast() {
|
|
// TODO: Use ::unspecified() constructor once stable
|
|
let bind_addr = if addr.is_ipv4() {
|
|
IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0))
|
|
} else {
|
|
IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0))
|
|
};
|
|
|
|
let saddr = SocketAddr::new(bind_addr, port as u16);
|
|
gst_debug!(
|
|
self.cat,
|
|
obj: element,
|
|
"Binding to {:?} for multicast group {:?}",
|
|
saddr,
|
|
addr
|
|
);
|
|
|
|
saddr
|
|
} else {
|
|
let saddr = SocketAddr::new(addr, port as u16);
|
|
gst_debug!(self.cat, obj: element, "Binding to {:?}", saddr);
|
|
|
|
saddr
|
|
};
|
|
|
|
let builder = if addr.is_ipv4() {
|
|
net2::UdpBuilder::new_v4()
|
|
} else {
|
|
net2::UdpBuilder::new_v6()
|
|
}
|
|
.map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to create socket: {}", err]
|
|
)
|
|
})?;
|
|
|
|
builder.reuse_address(settings.reuse).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to set reuse_address: {}", err]
|
|
)
|
|
})?;
|
|
|
|
#[cfg(unix)]
|
|
{
|
|
use net2::unix::UnixUdpBuilderExt;
|
|
|
|
builder.reuse_port(settings.reuse).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to set reuse_port: {}", err]
|
|
)
|
|
})?;
|
|
}
|
|
|
|
let socket = builder.bind(&saddr).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to bind socket: {}", err]
|
|
)
|
|
})?;
|
|
|
|
let socket =
|
|
net::UdpSocket::from_std(socket, io_context.reactor_handle()).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to setup socket for tokio: {}", err]
|
|
)
|
|
})?;
|
|
|
|
if addr.is_multicast() {
|
|
// TODO: Multicast interface configuration, going to be tricky
|
|
match addr {
|
|
IpAddr::V4(addr) => {
|
|
socket
|
|
.join_multicast_v4(&addr, &Ipv4Addr::new(0, 0, 0, 0))
|
|
.map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to join multicast group: {}", err]
|
|
)
|
|
})?;
|
|
}
|
|
IpAddr::V6(addr) => {
|
|
socket.join_multicast_v6(&addr, 0).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to join multicast group: {}", err]
|
|
)
|
|
})?;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Store the socket as used-socket in the settings
|
|
#[cfg(unix)]
|
|
unsafe {
|
|
use libc;
|
|
|
|
let fd = libc::dup(socket.as_raw_fd());
|
|
|
|
// This is unsafe because it allows us to share the fd between the socket and the
|
|
// GIO socket below, but safety of this is the job of the application
|
|
struct FdConverter(RawFd);
|
|
impl IntoRawFd for FdConverter {
|
|
fn into_raw_fd(self) -> RawFd {
|
|
self.0
|
|
}
|
|
}
|
|
|
|
let fd = FdConverter(fd);
|
|
|
|
let gio_socket = gio::Socket::new_from_fd(fd).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to create wrapped GIO socket: {}", err]
|
|
)
|
|
})?;;
|
|
let wrapper = GioSocketWrapper::new(&gio_socket);
|
|
self.settings.lock().unwrap().used_socket = Some(wrapper);
|
|
}
|
|
#[cfg(windows)]
|
|
unsafe {
|
|
let fd = dup_socket(socket.as_raw_socket() as _) as _;
|
|
|
|
// This is unsafe because it allows us to share the fd between the socket and the
|
|
// GIO socket below, but safety of this is the job of the application
|
|
struct SocketConverter(RawSocket);
|
|
impl IntoRawSocket for SocketConverter {
|
|
fn into_raw_socket(self) -> RawSocket {
|
|
self.0
|
|
}
|
|
}
|
|
|
|
let fd = SocketConverter(fd);
|
|
|
|
let gio_socket = gio::Socket::new_from_socket(fd).map_err(|err| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::OpenRead,
|
|
["Failed to create wrapped GIO socket: {}", err]
|
|
)
|
|
})?;;
|
|
let wrapper = GioSocketWrapper::new(&gio_socket);
|
|
self.settings.lock().unwrap().used_socket = Some(wrapper);
|
|
}
|
|
|
|
socket
|
|
};
|
|
|
|
let buffer_pool = gst::BufferPool::new();
|
|
let mut config = buffer_pool.get_config();
|
|
config.set_params(None, settings.mtu, 0, 0);
|
|
buffer_pool.set_config(config).map_err(|_| {
|
|
gst_error_msg!(
|
|
gst::ResourceError::Settings,
|
|
["Failed to configure buffer pool"]
|
|
)
|
|
})?;
|
|
|
|
let socket = Socket::new(element.upcast_ref(), UdpReader::new(socket), buffer_pool);
|
|
|
|
let element_clone = element.clone();
|
|
let element_clone2 = element.clone();
|
|
socket
|
|
.schedule(
|
|
&io_context,
|
|
move |buffer| {
|
|
let udpsrc = Self::from_instance(&element_clone);
|
|
udpsrc.push_buffer(&element_clone, buffer)
|
|
},
|
|
move |err| {
|
|
let udpsrc = Self::from_instance(&element_clone2);
|
|
gst_error!(udpsrc.cat, obj: &element_clone2, "Got error {}", err);
|
|
match err {
|
|
Either::Left(gst::FlowError::CustomError) => (),
|
|
Either::Left(err) => {
|
|
gst_element_error!(
|
|
element_clone2,
|
|
gst::StreamError::Failed,
|
|
("Internal data stream error"),
|
|
["streaming stopped, reason {}", err]
|
|
);
|
|
}
|
|
Either::Right(err) => {
|
|
gst_element_error!(
|
|
element_clone2,
|
|
gst::StreamError::Failed,
|
|
("I/O error"),
|
|
["streaming stopped, I/O error {}", err]
|
|
);
|
|
}
|
|
}
|
|
},
|
|
)
|
|
.map_err(|_| {
|
|
gst_error_msg!(gst::ResourceError::OpenRead, ["Failed to schedule socket"])
|
|
})?;
|
|
|
|
let pending_future_id = io_context.acquire_pending_future_id();
|
|
gst_debug!(
|
|
self.cat,
|
|
obj: element,
|
|
"Got pending future id {:?}",
|
|
pending_future_id
|
|
);
|
|
|
|
state.socket = Some(socket);
|
|
state.io_context = Some(io_context);
|
|
state.pending_future_id = Some(pending_future_id);
|
|
|
|
gst_debug!(self.cat, obj: element, "Prepared");
|
|
drop(state);
|
|
|
|
element.notify("used-socket");
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn unprepare(&self, element: &gst::Element) -> Result<(), ()> {
|
|
gst_debug!(self.cat, obj: element, "Unpreparing");
|
|
|
|
self.settings.lock().unwrap().used_socket = None;
|
|
|
|
// FIXME: The IO Context has to be alive longer than the queue,
|
|
// otherwise the queue can't finish any remaining work
|
|
let (mut socket, io_context) = {
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
if let (&Some(ref pending_future_id), &Some(ref io_context)) =
|
|
(&state.pending_future_id, &state.io_context)
|
|
{
|
|
io_context.release_pending_future_id(*pending_future_id);
|
|
}
|
|
|
|
let socket = state.socket.take();
|
|
let io_context = state.io_context.take();
|
|
*state = State::default();
|
|
(socket, io_context)
|
|
};
|
|
|
|
if let Some(ref socket) = socket.take() {
|
|
socket.shutdown();
|
|
}
|
|
drop(io_context);
|
|
|
|
gst_debug!(self.cat, obj: element, "Unprepared");
|
|
Ok(())
|
|
}
|
|
|
|
fn start(&self, element: &gst::Element) -> Result<(), ()> {
|
|
gst_debug!(self.cat, obj: element, "Starting");
|
|
let state = self.state.lock().unwrap();
|
|
|
|
if let Some(ref socket) = state.socket {
|
|
socket.unpause(element.get_clock(), Some(element.get_base_time()));
|
|
}
|
|
|
|
gst_debug!(self.cat, obj: element, "Started");
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn stop(&self, element: &gst::Element) -> Result<(), ()> {
|
|
gst_debug!(self.cat, obj: element, "Stopping");
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
if let Some(ref socket) = state.socket {
|
|
socket.pause();
|
|
}
|
|
let _ = state.pending_future_cancel.take();
|
|
|
|
gst_debug!(self.cat, obj: element, "Stopped");
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl ObjectSubclass for UdpSrc {
|
|
const NAME: &'static str = "RsTsUdpSrc";
|
|
type ParentType = gst::Element;
|
|
type Instance = gst::subclass::ElementInstanceStruct<Self>;
|
|
type Class = subclass::simple::ClassStruct<Self>;
|
|
|
|
glib_object_subclass!();
|
|
|
|
fn class_init(klass: &mut subclass::simple::ClassStruct<Self>) {
|
|
klass.set_metadata(
|
|
"Thread-sharing UDP source",
|
|
"Source/Network",
|
|
"Receives data over the network via UDP",
|
|
"Sebastian Dröge <sebastian@centricular.com>",
|
|
);
|
|
|
|
let caps = gst::Caps::new_any();
|
|
let src_pad_template = gst::PadTemplate::new(
|
|
"src",
|
|
gst::PadDirection::Src,
|
|
gst::PadPresence::Always,
|
|
&caps,
|
|
);
|
|
klass.add_pad_template(src_pad_template);
|
|
|
|
klass.install_properties(&PROPERTIES);
|
|
}
|
|
|
|
fn new_with_class(klass: &subclass::simple::ClassStruct<Self>) -> Self {
|
|
let templ = klass.get_pad_template("src").unwrap();
|
|
let src_pad = gst::Pad::new_from_template(&templ, "src");
|
|
|
|
src_pad.set_event_function(|pad, parent, event| {
|
|
UdpSrc::catch_panic_pad_function(
|
|
parent,
|
|
|| false,
|
|
|udpsrc, element| udpsrc.src_event(pad, element, event),
|
|
)
|
|
});
|
|
src_pad.set_query_function(|pad, parent, query| {
|
|
UdpSrc::catch_panic_pad_function(
|
|
parent,
|
|
|| false,
|
|
|udpsrc, element| udpsrc.src_query(pad, element, query),
|
|
)
|
|
});
|
|
|
|
Self {
|
|
cat: gst::DebugCategory::new(
|
|
"ts-udpsrc",
|
|
gst::DebugColorFlags::empty(),
|
|
"Thread-sharing UDP source",
|
|
),
|
|
src_pad: src_pad,
|
|
state: Mutex::new(State::default()),
|
|
settings: Mutex::new(Settings::default()),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ObjectImpl for UdpSrc {
|
|
glib_object_impl!();
|
|
|
|
fn set_property(&self, _obj: &glib::Object, id: usize, value: &glib::Value) {
|
|
let prop = &PROPERTIES[id];
|
|
|
|
match *prop {
|
|
subclass::Property("address", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.address = value.get();
|
|
}
|
|
subclass::Property("port", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.port = value.get().unwrap();
|
|
}
|
|
subclass::Property("reuse", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.reuse = value.get().unwrap();
|
|
}
|
|
subclass::Property("caps", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.caps = value.get();
|
|
}
|
|
subclass::Property("mtu", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.mtu = value.get().unwrap();
|
|
}
|
|
subclass::Property("socket", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.socket = value
|
|
.get::<gio::Socket>()
|
|
.map(|socket| GioSocketWrapper::new(&socket));
|
|
}
|
|
subclass::Property("used-socket", ..) => {
|
|
unreachable!();
|
|
}
|
|
subclass::Property("context", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.context = value.get().unwrap_or_else(|| "".into());
|
|
}
|
|
subclass::Property("context-wait", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.context_wait = value.get().unwrap();
|
|
}
|
|
_ => unimplemented!(),
|
|
}
|
|
}
|
|
|
|
fn get_property(&self, _obj: &glib::Object, id: usize) -> Result<glib::Value, ()> {
|
|
let prop = &PROPERTIES[id];
|
|
|
|
match *prop {
|
|
subclass::Property("address", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.address.to_value())
|
|
}
|
|
subclass::Property("port", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.port.to_value())
|
|
}
|
|
subclass::Property("reuse", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.reuse.to_value())
|
|
}
|
|
subclass::Property("caps", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.caps.to_value())
|
|
}
|
|
subclass::Property("mtu", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.mtu.to_value())
|
|
}
|
|
subclass::Property("socket", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings
|
|
.socket
|
|
.as_ref()
|
|
.map(GioSocketWrapper::as_socket)
|
|
.to_value())
|
|
}
|
|
subclass::Property("used-socket", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings
|
|
.used_socket
|
|
.as_ref()
|
|
.map(GioSocketWrapper::as_socket)
|
|
.to_value())
|
|
}
|
|
subclass::Property("context", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.context.to_value())
|
|
}
|
|
subclass::Property("context-wait", ..) => {
|
|
let mut settings = self.settings.lock().unwrap();
|
|
Ok(settings.context_wait.to_value())
|
|
}
|
|
_ => unimplemented!(),
|
|
}
|
|
}
|
|
|
|
fn constructed(&self, obj: &glib::Object) {
|
|
self.parent_constructed(obj);
|
|
|
|
let element = obj.downcast_ref::<gst::Element>().unwrap();
|
|
element.add_pad(&self.src_pad).unwrap();
|
|
::set_element_flags(element, gst::ElementFlags::SOURCE);
|
|
}
|
|
}
|
|
|
|
impl ElementImpl for UdpSrc {
|
|
fn change_state(
|
|
&self,
|
|
element: &gst::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(err) => {
|
|
element.post_error_message(&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 = self.parent_change_state(element, 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
|
|
}
|
|
}
|
|
|
|
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
|
|
gst::Element::register(plugin, "ts-udpsrc", 0, UdpSrc::get_type())
|
|
}
|