2018-03-19 14:47:56 +00:00
|
|
|
// Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
|
|
|
|
//
|
|
|
|
// This library is free software; you can redistribute it and/or
|
|
|
|
// modify it under the terms of the GNU Library General Public
|
|
|
|
// License as published by the Free Software Foundation; either
|
|
|
|
// version 2 of the License, or (at your option) any later version.
|
|
|
|
//
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
// Library General Public License for more details.
|
|
|
|
//
|
|
|
|
// You should have received a copy of the GNU Library General Public
|
|
|
|
// License along with this library; if not, write to the
|
|
|
|
// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
|
|
|
|
// Boston, MA 02110-1335, USA.
|
|
|
|
|
|
|
|
use glib;
|
|
|
|
use glib::prelude::*;
|
|
|
|
use gst;
|
|
|
|
use gst::prelude::*;
|
|
|
|
|
|
|
|
use gst_plugin::properties::*;
|
|
|
|
use gst_plugin::object::*;
|
|
|
|
use gst_plugin::element::*;
|
|
|
|
|
2018-03-26 15:30:44 +00:00
|
|
|
use std::sync::Mutex;
|
2018-03-19 14:47:56 +00:00
|
|
|
use std::{u16, u32, u64};
|
|
|
|
use std::collections::VecDeque;
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
use futures;
|
|
|
|
use futures::future;
|
2018-03-26 15:30:44 +00:00
|
|
|
use futures::{Async, Future, IntoFuture, Stream};
|
2018-03-19 14:47:56 +00:00
|
|
|
use futures::task;
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
use tokio::executor;
|
|
|
|
|
2018-03-19 14:47:56 +00:00
|
|
|
use iocontext::*;
|
2018-03-26 15:30:44 +00:00
|
|
|
use dataqueue::*;
|
2018-03-19 14:47:56 +00:00
|
|
|
|
|
|
|
const DEFAULT_MAX_SIZE_BUFFERS: u32 = 200;
|
|
|
|
const DEFAULT_MAX_SIZE_BYTES: u32 = 1024 * 1024;
|
|
|
|
const DEFAULT_MAX_SIZE_TIME: u64 = gst::SECOND_VAL;
|
|
|
|
const DEFAULT_CONTEXT: &'static str = "";
|
|
|
|
const DEFAULT_CONTEXT_THREADS: i32 = 0;
|
|
|
|
const DEFAULT_CONTEXT_WAIT: u32 = 0;
|
|
|
|
|
|
|
|
#[derive(Debug, Clone)]
|
|
|
|
struct Settings {
|
|
|
|
max_size_buffers: u32,
|
|
|
|
max_size_bytes: u32,
|
|
|
|
max_size_time: u64,
|
|
|
|
context: String,
|
|
|
|
context_threads: i32,
|
|
|
|
context_wait: u32,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for Settings {
|
|
|
|
fn default() -> Self {
|
|
|
|
Settings {
|
|
|
|
max_size_buffers: DEFAULT_MAX_SIZE_BUFFERS,
|
|
|
|
max_size_bytes: DEFAULT_MAX_SIZE_BYTES,
|
|
|
|
max_size_time: DEFAULT_MAX_SIZE_TIME,
|
|
|
|
context: DEFAULT_CONTEXT.into(),
|
|
|
|
context_threads: DEFAULT_CONTEXT_THREADS,
|
|
|
|
context_wait: DEFAULT_CONTEXT_WAIT,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static PROPERTIES: [Property; 6] = [
|
|
|
|
Property::UInt(
|
|
|
|
"max-size-buffers",
|
|
|
|
"Max Size Buffers",
|
|
|
|
"Maximum number of buffers to queue (0=unlimited)",
|
|
|
|
(0, u32::MAX),
|
|
|
|
DEFAULT_MAX_SIZE_BUFFERS,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::UInt(
|
|
|
|
"max-size-bytes",
|
|
|
|
"Max Size Bytes",
|
|
|
|
"Maximum number of bytes to queue (0=unlimited)",
|
|
|
|
(0, u32::MAX),
|
|
|
|
DEFAULT_MAX_SIZE_BYTES,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::UInt64(
|
|
|
|
"max-size-time",
|
|
|
|
"Max Size Time",
|
|
|
|
"Maximum number of nanoseconds to queue (0=unlimited)",
|
|
|
|
(0, u64::MAX - 1),
|
|
|
|
DEFAULT_MAX_SIZE_TIME,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::String(
|
|
|
|
"context",
|
|
|
|
"Context",
|
|
|
|
"Context name to share threads with",
|
|
|
|
Some(DEFAULT_CONTEXT),
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::Int(
|
|
|
|
"context-threads",
|
|
|
|
"Context Threads",
|
|
|
|
"Number of threads for the context thread-pool if we create it",
|
|
|
|
(-1, u16::MAX as i32),
|
|
|
|
DEFAULT_CONTEXT_THREADS,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::UInt(
|
|
|
|
"context-wait",
|
|
|
|
"Context Wait",
|
|
|
|
"Throttle poll loop to run at most once every this many ms",
|
|
|
|
(0, 1000),
|
|
|
|
DEFAULT_CONTEXT_WAIT,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
];
|
|
|
|
|
|
|
|
struct State {
|
|
|
|
io_context: Option<IOContext>,
|
2018-03-26 14:49:42 +00:00
|
|
|
pending_future_id: Option<PendingFutureId>,
|
|
|
|
io_context_in: Option<IOContext>,
|
|
|
|
pending_future_id_in: Option<PendingFutureId>,
|
2018-03-19 14:47:56 +00:00
|
|
|
queue: Option<DataQueue>,
|
2018-03-26 14:49:42 +00:00
|
|
|
pending_queue: Option<(Option<task::Task>, VecDeque<DataQueueItem>)>,
|
2018-03-19 14:47:56 +00:00
|
|
|
last_ret: gst::FlowReturn,
|
2018-03-26 14:49:42 +00:00
|
|
|
pending_future_cancel: Option<futures::sync::oneshot::Sender<()>>,
|
2018-03-19 14:47:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for State {
|
|
|
|
fn default() -> State {
|
|
|
|
State {
|
|
|
|
io_context: None,
|
2018-03-26 14:49:42 +00:00
|
|
|
pending_future_id: None,
|
|
|
|
io_context_in: None,
|
|
|
|
pending_future_id_in: None,
|
2018-03-19 14:47:56 +00:00
|
|
|
queue: None,
|
2018-03-26 14:49:42 +00:00
|
|
|
pending_queue: None,
|
2018-03-19 14:47:56 +00:00
|
|
|
last_ret: gst::FlowReturn::Ok,
|
2018-03-26 14:49:42 +00:00
|
|
|
pending_future_cancel: None,
|
2018-03-19 14:47:56 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
struct Queue {
|
|
|
|
cat: gst::DebugCategory,
|
|
|
|
sink_pad: gst::Pad,
|
|
|
|
src_pad: gst::Pad,
|
|
|
|
state: Mutex<State>,
|
|
|
|
settings: Mutex<Settings>,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Queue {
|
|
|
|
fn class_init(klass: &mut ElementClass) {
|
|
|
|
klass.set_metadata(
|
|
|
|
"Thread-sharing queue",
|
|
|
|
"Generic",
|
|
|
|
"Simple data queue",
|
|
|
|
"Sebastian Dröge <sebastian@centricular.com>",
|
|
|
|
);
|
|
|
|
|
|
|
|
let caps = gst::Caps::new_any();
|
|
|
|
|
|
|
|
let sink_pad_template = gst::PadTemplate::new(
|
|
|
|
"sink",
|
|
|
|
gst::PadDirection::Sink,
|
|
|
|
gst::PadPresence::Always,
|
|
|
|
&caps,
|
|
|
|
);
|
|
|
|
klass.add_pad_template(sink_pad_template);
|
|
|
|
|
|
|
|
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 init(element: &Element) -> Box<ElementImpl<Element>> {
|
|
|
|
let templ = element.get_pad_template("sink").unwrap();
|
|
|
|
let sink_pad = gst::Pad::new_from_template(&templ, "sink");
|
|
|
|
let templ = element.get_pad_template("src").unwrap();
|
|
|
|
let src_pad = gst::Pad::new_from_template(&templ, "src");
|
|
|
|
|
|
|
|
sink_pad.set_chain_function(|pad, parent, buffer| {
|
|
|
|
Queue::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| gst::FlowReturn::Error,
|
|
|
|
|queue, element| queue.sink_chain(pad, element, buffer),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
sink_pad.set_chain_list_function(|pad, parent, list| {
|
|
|
|
Queue::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| gst::FlowReturn::Error,
|
|
|
|
|queue, element| queue.sink_chain_list(pad, element, list),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
sink_pad.set_event_function(|pad, parent, event| {
|
|
|
|
Queue::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|queue, element| queue.sink_event(pad, element, event),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
sink_pad.set_query_function(|pad, parent, query| {
|
|
|
|
Queue::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|queue, element| queue.sink_query(pad, element, query),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
|
|
|
|
src_pad.set_event_function(|pad, parent, event| {
|
|
|
|
Queue::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|queue, element| queue.src_event(pad, element, event),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
src_pad.set_query_function(|pad, parent, query| {
|
|
|
|
Queue::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|queue, element| queue.src_query(pad, element, query),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
element.add_pad(&sink_pad).unwrap();
|
|
|
|
element.add_pad(&src_pad).unwrap();
|
|
|
|
|
|
|
|
Box::new(Self {
|
|
|
|
cat: gst::DebugCategory::new(
|
|
|
|
"ts-queue",
|
|
|
|
gst::DebugColorFlags::empty(),
|
|
|
|
"Thread-sharing queue",
|
|
|
|
),
|
|
|
|
sink_pad: sink_pad,
|
|
|
|
src_pad: src_pad,
|
|
|
|
state: Mutex::new(State::default()),
|
|
|
|
settings: Mutex::new(Settings::default()),
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
fn catch_panic_pad_function<T, F: FnOnce(&Self, &Element) -> T, G: FnOnce() -> T>(
|
|
|
|
parent: &Option<gst::Object>,
|
|
|
|
fallback: G,
|
|
|
|
f: F,
|
|
|
|
) -> T {
|
|
|
|
let element = parent
|
|
|
|
.as_ref()
|
|
|
|
.cloned()
|
|
|
|
.unwrap()
|
|
|
|
.downcast::<Element>()
|
|
|
|
.unwrap();
|
|
|
|
let queue = element.get_impl().downcast_ref::<Queue>().unwrap();
|
|
|
|
element.catch_panic(fallback, |element| f(queue, element))
|
|
|
|
}
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
fn create_io_context_event(state: &State) -> Option<gst::Event> {
|
|
|
|
if let (&Some(ref pending_future_id), &Some(ref io_context)) =
|
|
|
|
(&state.pending_future_id, &state.io_context)
|
|
|
|
{
|
|
|
|
let s = gst::Structure::new(
|
|
|
|
"ts-io-context",
|
|
|
|
&[
|
|
|
|
("io-context", &glib::AnySendValue::new(io_context.clone())),
|
|
|
|
(
|
|
|
|
"pending-future-id",
|
|
|
|
&glib::AnySendValue::new(*pending_future_id),
|
|
|
|
),
|
|
|
|
],
|
|
|
|
);
|
|
|
|
Some(gst::Event::new_custom_downstream_sticky(s).build())
|
|
|
|
} else {
|
|
|
|
None
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn enqueue_item(
|
2018-03-19 14:47:56 +00:00
|
|
|
&self,
|
2018-03-26 14:49:42 +00:00
|
|
|
_pad: &gst::Pad,
|
|
|
|
element: &Element,
|
|
|
|
item: DataQueueItem,
|
2018-03-19 14:47:56 +00:00
|
|
|
) -> gst::FlowReturn {
|
2018-03-26 14:49:42 +00:00
|
|
|
let wait_future = {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
let State {
|
|
|
|
ref queue,
|
|
|
|
ref mut pending_queue,
|
|
|
|
ref io_context_in,
|
|
|
|
pending_future_id_in,
|
|
|
|
..
|
|
|
|
} = *state;
|
|
|
|
let queue = match *queue {
|
|
|
|
None => return gst::FlowReturn::Error,
|
|
|
|
Some(ref queue) => queue,
|
|
|
|
};
|
2018-03-19 14:47:56 +00:00
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
let item = if pending_queue.is_none() {
|
|
|
|
queue.push(item)
|
|
|
|
} else {
|
|
|
|
Err(item)
|
|
|
|
};
|
|
|
|
if let Err(item) = item {
|
|
|
|
if pending_queue.is_none() {
|
|
|
|
*pending_queue = Some((None, VecDeque::new()));
|
|
|
|
pending_queue.as_mut().unwrap().1.push_back(item);
|
|
|
|
|
|
|
|
gst_log!(
|
|
|
|
self.cat,
|
|
|
|
obj: element,
|
|
|
|
"Queue is full - Pushing first item on pending queue"
|
|
|
|
);
|
|
|
|
|
|
|
|
let element_clone = element.clone();
|
|
|
|
let future = future::poll_fn(move || {
|
|
|
|
let queue = element_clone.get_impl().downcast_ref::<Queue>().unwrap();
|
|
|
|
let mut state = queue.state.lock().unwrap();
|
|
|
|
|
|
|
|
let State {
|
|
|
|
queue: ref dq,
|
|
|
|
ref mut pending_queue,
|
|
|
|
..
|
|
|
|
} = *state;
|
|
|
|
|
|
|
|
gst_log!(
|
|
|
|
queue.cat,
|
|
|
|
obj: &element_clone,
|
|
|
|
"Trying to empty pending queue"
|
|
|
|
);
|
|
|
|
let res = if let Some((ref mut task, ref mut items)) = *pending_queue {
|
|
|
|
let mut failed_item = None;
|
|
|
|
for item in items.drain(..) {
|
|
|
|
if let Err(item) = dq.as_ref().unwrap().push(item) {
|
|
|
|
failed_item = Some(item);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if let Some(item) = failed_item {
|
|
|
|
items.push_front(item);
|
|
|
|
*task = Some(task::current());
|
|
|
|
gst_log!(
|
|
|
|
queue.cat,
|
|
|
|
obj: &element_clone,
|
|
|
|
"Waiting for more queue space"
|
|
|
|
);
|
|
|
|
Ok(Async::NotReady)
|
|
|
|
} else {
|
|
|
|
gst_log!(
|
|
|
|
queue.cat,
|
|
|
|
obj: &element_clone,
|
|
|
|
"Pending queue is empty now"
|
|
|
|
);
|
|
|
|
Ok(Async::Ready(()))
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
gst_log!(
|
|
|
|
queue.cat,
|
|
|
|
obj: &element_clone,
|
|
|
|
"Flushing, dropping pending queue"
|
|
|
|
);
|
|
|
|
Ok(Async::Ready(()))
|
|
|
|
};
|
|
|
|
|
|
|
|
if res == Ok(Async::Ready(())) {
|
|
|
|
*pending_queue = None;
|
|
|
|
}
|
|
|
|
|
|
|
|
res
|
|
|
|
});
|
|
|
|
|
|
|
|
if let (Some(io_context_in), Some(pending_future_id_in)) =
|
|
|
|
(io_context_in.as_ref(), pending_future_id_in.as_ref())
|
|
|
|
{
|
|
|
|
io_context_in.add_pending_future(*pending_future_id_in, future);
|
|
|
|
None
|
|
|
|
} else {
|
|
|
|
Some(future)
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
assert!(io_context_in.is_some());
|
|
|
|
pending_queue.as_mut().unwrap().1.push_back(item);
|
|
|
|
|
|
|
|
None
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
None
|
|
|
|
}
|
2018-03-19 14:47:56 +00:00
|
|
|
};
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
if let Some(wait_future) = wait_future {
|
|
|
|
gst_log!(self.cat, obj: element, "Blocking until queue becomes empty");
|
|
|
|
match executor::current_thread::block_on_all(wait_future) {
|
|
|
|
Err(_) => {
|
|
|
|
gst_element_error!(
|
|
|
|
element,
|
|
|
|
gst::StreamError::Failed,
|
|
|
|
["failed to wait for queue to become empty again"]
|
|
|
|
);
|
|
|
|
return gst::FlowReturn::Error;
|
|
|
|
}
|
|
|
|
Ok(_) => (),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
self.state.lock().unwrap().last_ret
|
|
|
|
}
|
2018-03-19 14:47:56 +00:00
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
fn sink_chain(
|
|
|
|
&self,
|
|
|
|
pad: &gst::Pad,
|
|
|
|
element: &Element,
|
|
|
|
buffer: gst::Buffer,
|
|
|
|
) -> gst::FlowReturn {
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling buffer {:?}", buffer);
|
|
|
|
self.enqueue_item(pad, element, DataQueueItem::Buffer(buffer))
|
2018-03-19 14:47:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
fn sink_chain_list(
|
|
|
|
&self,
|
|
|
|
pad: &gst::Pad,
|
2018-03-26 14:49:42 +00:00
|
|
|
element: &Element,
|
2018-03-19 14:47:56 +00:00
|
|
|
list: gst::BufferList,
|
|
|
|
) -> gst::FlowReturn {
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling buffer list {:?}", list);
|
2018-03-26 14:49:42 +00:00
|
|
|
self.enqueue_item(pad, element, DataQueueItem::BufferList(list))
|
2018-03-19 14:47:56 +00:00
|
|
|
}
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
fn sink_event(&self, pad: &gst::Pad, element: &Element, mut event: gst::Event) -> bool {
|
2018-03-19 14:47:56 +00:00
|
|
|
use gst::EventView;
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling event {:?}", event);
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
let mut new_event = None;
|
2018-03-19 14:47:56 +00:00
|
|
|
match event.view() {
|
|
|
|
EventView::FlushStart(..) => {
|
|
|
|
let _ = self.stop(element);
|
|
|
|
}
|
|
|
|
EventView::FlushStop(..) => {
|
|
|
|
let (ret, state, pending) = element.get_state(0.into());
|
|
|
|
if ret == gst::StateChangeReturn::Success && state == gst::State::Paused
|
|
|
|
|| ret == gst::StateChangeReturn::Async && pending == gst::State::Paused
|
|
|
|
{
|
|
|
|
let _ = self.start(element);
|
|
|
|
}
|
|
|
|
}
|
2018-03-26 14:49:42 +00:00
|
|
|
EventView::CustomDownstreamSticky(e) => {
|
|
|
|
let s = e.get_structure().unwrap();
|
|
|
|
if s.get_name() == "ts-io-context" {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
let io_context = s.get::<&glib::AnySendValue>("io-context").unwrap();
|
|
|
|
let io_context = io_context.downcast_ref::<IOContext>().unwrap();
|
|
|
|
let pending_future_id =
|
|
|
|
s.get::<&glib::AnySendValue>("pending-future-id").unwrap();
|
|
|
|
let pending_future_id =
|
|
|
|
pending_future_id.downcast_ref::<PendingFutureId>().unwrap();
|
|
|
|
|
|
|
|
gst_debug!(
|
|
|
|
self.cat,
|
|
|
|
obj: element,
|
|
|
|
"Got upstream pending future id {:?}",
|
|
|
|
pending_future_id
|
|
|
|
);
|
|
|
|
|
|
|
|
state.io_context_in = Some(io_context.clone());
|
|
|
|
state.pending_future_id_in = Some(*pending_future_id);
|
|
|
|
|
|
|
|
new_event = Self::create_io_context_event(&state);
|
|
|
|
|
|
|
|
// Get rid of reconfigure flag
|
|
|
|
self.src_pad.check_reconfigure();
|
|
|
|
}
|
|
|
|
}
|
2018-03-19 14:47:56 +00:00
|
|
|
_ => (),
|
|
|
|
};
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
if let Some(new_event) = new_event {
|
|
|
|
event = new_event;
|
|
|
|
}
|
|
|
|
|
2018-03-19 14:47:56 +00:00
|
|
|
if event.is_serialized() {
|
|
|
|
gst_log!(self.cat, obj: pad, "Queuing event {:?}", event);
|
2018-03-26 14:49:42 +00:00
|
|
|
let _ = self.enqueue_item(pad, element, DataQueueItem::Event(event));
|
2018-03-19 14:47:56 +00:00
|
|
|
true
|
|
|
|
} else {
|
|
|
|
gst_log!(self.cat, obj: pad, "Forwarding event {:?}", event);
|
|
|
|
self.src_pad.push_event(event)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn sink_query(&self, pad: &gst::Pad, _element: &Element, query: &mut gst::QueryRef) -> bool {
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling query {:?}", query);
|
|
|
|
|
|
|
|
if query.is_serialized() {
|
|
|
|
// FIXME: How can we do this?
|
|
|
|
gst_log!(self.cat, obj: pad, "Dropping serialized query {:?}", query);
|
|
|
|
false
|
|
|
|
} else {
|
|
|
|
gst_log!(self.cat, obj: pad, "Forwarding query {:?}", query);
|
|
|
|
self.src_pad.peer_query(query)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn src_event(&self, pad: &gst::Pad, element: &Element, event: gst::Event) -> bool {
|
|
|
|
use gst::EventView;
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling event {:?}", event);
|
|
|
|
|
|
|
|
match event.view() {
|
|
|
|
EventView::FlushStart(..) => {
|
|
|
|
let _ = self.stop(element);
|
|
|
|
}
|
|
|
|
EventView::FlushStop(..) => {
|
|
|
|
let (ret, state, pending) = element.get_state(0.into());
|
|
|
|
if ret == gst::StateChangeReturn::Success && state == gst::State::Playing
|
|
|
|
|| ret == gst::StateChangeReturn::Async && pending == gst::State::Playing
|
|
|
|
{
|
|
|
|
let _ = self.start(element);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
_ => (),
|
|
|
|
};
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Forwarding event {:?}", event);
|
|
|
|
self.sink_pad.push_event(event)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn src_query(&self, pad: &gst::Pad, _element: &Element, query: &mut gst::QueryRef) -> bool {
|
|
|
|
use gst::QueryView;
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling query {:?}", query);
|
|
|
|
match query.view_mut() {
|
|
|
|
QueryView::Scheduling(ref mut q) => {
|
|
|
|
let mut new_query = gst::Query::new_scheduling();
|
|
|
|
let res = self.sink_pad.peer_query(&mut new_query);
|
|
|
|
if !res {
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Upstream returned {:?}", new_query);
|
|
|
|
|
|
|
|
let (flags, min, max, align) = new_query.get_result();
|
|
|
|
q.set(flags, min, max, align);
|
|
|
|
q.add_scheduling_modes(&new_query
|
|
|
|
.get_scheduling_modes()
|
|
|
|
.iter()
|
|
|
|
.cloned()
|
|
|
|
.filter(|m| m != &gst::PadMode::Pull)
|
|
|
|
.collect::<Vec<_>>());
|
|
|
|
gst_log!(self.cat, obj: pad, "Returning {:?}", q.get_mut_query());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
_ => (),
|
|
|
|
};
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Forwarding query {:?}", query);
|
|
|
|
self.sink_pad.peer_query(query)
|
|
|
|
}
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
fn push_item(
|
|
|
|
&self,
|
|
|
|
element: &Element,
|
|
|
|
item: DataQueueItem,
|
|
|
|
) -> future::Either<
|
|
|
|
Box<Future<Item = (), Error = gst::FlowError> + Send + 'static>,
|
|
|
|
future::FutureResult<(), gst::FlowError>,
|
|
|
|
> {
|
|
|
|
let event = {
|
|
|
|
let state = self.state.lock().unwrap();
|
|
|
|
if let Some((Some(ref task), _)) = state.pending_queue {
|
|
|
|
task.notify();
|
|
|
|
}
|
|
|
|
|
|
|
|
if self.src_pad.check_reconfigure() {
|
|
|
|
Self::create_io_context_event(&state)
|
|
|
|
} else {
|
|
|
|
None
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
if let Some(event) = event {
|
|
|
|
self.src_pad.push_event(event);
|
|
|
|
}
|
|
|
|
|
2018-03-19 14:47:56 +00:00
|
|
|
let res = match item {
|
|
|
|
DataQueueItem::Buffer(buffer) => {
|
|
|
|
gst_log!(self.cat, obj: element, "Forwarding buffer {:?}", buffer);
|
|
|
|
self.src_pad.push(buffer).into_result().map(|_| ())
|
|
|
|
}
|
|
|
|
DataQueueItem::BufferList(list) => {
|
|
|
|
gst_log!(self.cat, obj: element, "Forwarding buffer list {:?}", list);
|
|
|
|
self.src_pad.push_list(list).into_result().map(|_| ())
|
|
|
|
}
|
|
|
|
DataQueueItem::Event(event) => {
|
|
|
|
gst_log!(self.cat, obj: element, "Forwarding event {:?}", event);
|
|
|
|
self.src_pad.push_event(event);
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
let res = match res {
|
2018-03-19 14:47:56 +00:00
|
|
|
Ok(_) => {
|
|
|
|
gst_log!(self.cat, obj: element, "Successfully pushed item");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
state.last_ret = gst::FlowReturn::Ok;
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
Err(gst::FlowError::Flushing) => {
|
|
|
|
gst_debug!(self.cat, obj: element, "Flushing");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
if let Some(ref queue) = state.queue {
|
|
|
|
queue.pause();
|
|
|
|
}
|
|
|
|
state.last_ret = gst::FlowReturn::Flushing;
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
Err(gst::FlowError::Eos) => {
|
|
|
|
gst_debug!(self.cat, obj: element, "EOS");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
if let Some(ref queue) = state.queue {
|
|
|
|
queue.pause();
|
|
|
|
}
|
|
|
|
state.last_ret = gst::FlowReturn::Eos;
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
Err(err) => {
|
|
|
|
gst_error!(self.cat, obj: element, "Got error {}", err);
|
|
|
|
gst_element_error!(
|
|
|
|
element,
|
|
|
|
gst::StreamError::Failed,
|
|
|
|
("Internal data stream error"),
|
|
|
|
["streaming stopped, reason {}", err]
|
|
|
|
);
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
state.last_ret = gst::FlowReturn::from_error(err);
|
|
|
|
Err(gst::FlowError::CustomError)
|
|
|
|
}
|
2018-03-26 14:49:42 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
match res {
|
|
|
|
Ok(()) => {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
let State {
|
|
|
|
ref pending_future_id,
|
|
|
|
ref io_context,
|
|
|
|
ref mut pending_future_cancel,
|
|
|
|
..
|
|
|
|
} = *state;
|
|
|
|
|
|
|
|
if let (&Some(ref pending_future_id), &Some(ref io_context)) =
|
|
|
|
(pending_future_id, io_context)
|
|
|
|
{
|
|
|
|
let pending_futures = io_context.drain_pending_futures(*pending_future_id);
|
|
|
|
|
|
|
|
if !pending_futures.is_empty() {
|
|
|
|
gst_log!(
|
|
|
|
self.cat,
|
|
|
|
obj: element,
|
|
|
|
"Scheduling {} pending futures",
|
|
|
|
pending_futures.len()
|
|
|
|
);
|
|
|
|
|
|
|
|
let (sender, receiver) = futures::sync::oneshot::channel();
|
|
|
|
*pending_future_cancel = Some(sender);
|
|
|
|
|
|
|
|
let future = pending_futures
|
|
|
|
.for_each(|_| Ok(()))
|
|
|
|
.select(receiver.then(|_| Ok(())))
|
|
|
|
.then(|_| Ok(()));
|
|
|
|
|
|
|
|
future::Either::A(Box::new(future))
|
|
|
|
} else {
|
|
|
|
*pending_future_cancel = None;
|
|
|
|
future::Either::B(Ok(()).into_future())
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
*pending_future_cancel = None;
|
|
|
|
future::Either::B(Ok(()).into_future())
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Err(err) => future::Either::B(Err(err).into_future()),
|
2018-03-19 14:47:56 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn prepare(&self, element: &Element) -> Result<(), gst::ErrorMessage> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Preparing");
|
|
|
|
|
|
|
|
let settings = self.settings.lock().unwrap().clone();
|
|
|
|
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
let io_context = IOContext::new(
|
|
|
|
&settings.context,
|
|
|
|
settings.context_threads as isize,
|
|
|
|
settings.context_wait,
|
|
|
|
).map_err(|err| {
|
|
|
|
gst_error_msg!(
|
|
|
|
gst::ResourceError::OpenRead,
|
|
|
|
["Failed to create IO context: {}", err]
|
|
|
|
)
|
|
|
|
})?;
|
|
|
|
|
2018-03-26 15:30:44 +00:00
|
|
|
let dataqueue = DataQueue::new(
|
|
|
|
&element.clone().upcast(),
|
|
|
|
if settings.max_size_buffers == 0 {
|
|
|
|
None
|
|
|
|
} else {
|
|
|
|
Some(settings.max_size_buffers)
|
|
|
|
},
|
|
|
|
if settings.max_size_bytes == 0 {
|
|
|
|
None
|
|
|
|
} else {
|
|
|
|
Some(settings.max_size_bytes)
|
|
|
|
},
|
|
|
|
if settings.max_size_time == 0 {
|
|
|
|
None
|
|
|
|
} else {
|
|
|
|
Some(settings.max_size_time)
|
|
|
|
},
|
|
|
|
);
|
2018-03-19 14:47:56 +00:00
|
|
|
|
|
|
|
let element_clone = element.clone();
|
|
|
|
let element_clone2 = element.clone();
|
|
|
|
dataqueue
|
|
|
|
.schedule(
|
|
|
|
&io_context,
|
|
|
|
move |item| {
|
|
|
|
let queue = element_clone.get_impl().downcast_ref::<Queue>().unwrap();
|
|
|
|
queue.push_item(&element_clone, item)
|
|
|
|
},
|
|
|
|
move |err| {
|
|
|
|
let queue = element_clone2.get_impl().downcast_ref::<Queue>().unwrap();
|
|
|
|
gst_error!(queue.cat, obj: &element_clone2, "Got error {}", err);
|
|
|
|
match err {
|
|
|
|
gst::FlowError::CustomError => (),
|
|
|
|
err => {
|
|
|
|
gst_element_error!(
|
|
|
|
element_clone2,
|
|
|
|
gst::StreamError::Failed,
|
|
|
|
("Internal data stream error"),
|
|
|
|
["streaming stopped, reason {}", err]
|
|
|
|
);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
},
|
|
|
|
)
|
|
|
|
.map_err(|_| {
|
|
|
|
gst_error_msg!(
|
|
|
|
gst::ResourceError::OpenRead,
|
|
|
|
["Failed to schedule data queue"]
|
|
|
|
)
|
|
|
|
})?;;
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
let pending_future_id = io_context.acquire_pending_future_id();
|
|
|
|
gst_debug!(
|
|
|
|
self.cat,
|
|
|
|
obj: element,
|
|
|
|
"Got pending future id {:?}",
|
|
|
|
pending_future_id
|
|
|
|
);
|
|
|
|
|
2018-03-19 14:47:56 +00:00
|
|
|
state.io_context = Some(io_context);
|
|
|
|
state.queue = Some(dataqueue);
|
2018-03-26 14:49:42 +00:00
|
|
|
state.pending_future_id = Some(pending_future_id);
|
2018-03-19 14:47:56 +00:00
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Prepared");
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn unprepare(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Unpreparing");
|
|
|
|
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if let Some(ref queue) = state.queue {
|
|
|
|
queue.shutdown();
|
|
|
|
}
|
|
|
|
|
2018-03-26 14:49:42 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2018-03-19 14:47:56 +00:00
|
|
|
*state = State::default();
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Unprepared");
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn start(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Starting");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if let Some(ref queue) = state.queue {
|
|
|
|
queue.unpause();
|
|
|
|
}
|
|
|
|
state.last_ret = gst::FlowReturn::Ok;
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Started");
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn stop(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Stopping");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if let Some(ref queue) = state.queue {
|
|
|
|
queue.pause();
|
|
|
|
queue.clear(&self.src_pad);
|
|
|
|
}
|
2018-03-26 14:49:42 +00:00
|
|
|
if let Some((Some(task), _)) = state.pending_queue.take() {
|
|
|
|
task.notify();
|
|
|
|
}
|
|
|
|
let _ = state.pending_future_cancel.take();
|
2018-03-19 14:47:56 +00:00
|
|
|
state.last_ret = gst::FlowReturn::Flushing;
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Stopped");
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl ObjectImpl<Element> for Queue {
|
|
|
|
fn set_property(&self, _obj: &glib::Object, id: u32, value: &glib::Value) {
|
|
|
|
let prop = &PROPERTIES[id as usize];
|
|
|
|
|
|
|
|
match *prop {
|
|
|
|
Property::UInt("max-size-buffers", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.max_size_buffers = value.get().unwrap();
|
|
|
|
}
|
|
|
|
Property::UInt("max-size-bytes", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.max_size_bytes = value.get().unwrap();
|
|
|
|
}
|
|
|
|
Property::UInt64("max-size-time", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.max_size_time = value.get().unwrap();
|
|
|
|
}
|
|
|
|
Property::String("context", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.context = value.get().unwrap_or_else(|| "".into());
|
|
|
|
}
|
|
|
|
Property::Int("context-threads", ..) => {
|
|
|
|
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::UInt("max-size-buffers", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.max_size_buffers.to_value())
|
|
|
|
}
|
|
|
|
Property::UInt("max-size-bytes", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.max_size_bytes.to_value())
|
|
|
|
}
|
|
|
|
Property::UInt64("max-size-time", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.max_size_time.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 Queue {
|
|
|
|
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(err) => {
|
|
|
|
element.post_error_message(&err);
|
|
|
|
return gst::StateChangeReturn::Failure;
|
|
|
|
}
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
gst::StateChange::PausedToReady => match self.stop(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
gst::StateChange::ReadyToNull => match self.unprepare(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
_ => (),
|
|
|
|
}
|
|
|
|
|
|
|
|
let ret = element.parent_change_state(transition);
|
|
|
|
if ret == gst::StateChangeReturn::Failure {
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
match transition {
|
|
|
|
gst::StateChange::ReadyToPaused => match self.start(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
_ => (),
|
|
|
|
}
|
|
|
|
|
|
|
|
ret
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
struct QueueStatic;
|
|
|
|
|
|
|
|
impl ImplTypeStatic<Element> for QueueStatic {
|
|
|
|
fn get_name(&self) -> &str {
|
|
|
|
"Queue"
|
|
|
|
}
|
|
|
|
|
|
|
|
fn new(&self, element: &Element) -> Box<ElementImpl<Element>> {
|
|
|
|
Queue::init(element)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn class_init(&self, klass: &mut ElementClass) {
|
|
|
|
Queue::class_init(klass);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn register(plugin: &gst::Plugin) {
|
|
|
|
let queue_static = QueueStatic;
|
|
|
|
let type_ = register_type(queue_static);
|
|
|
|
gst::Element::register(plugin, "ts-queue", 0, type_);
|
|
|
|
}
|