mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-11-25 13:01:07 +00:00
fallbacksrc: Fallback to videotestsrc if image fallback URI is invalid
... or on error from video fallback path
This commit is contained in:
Seungha Yang
Sebastian Dröge
parent
b5796f5773
commit
c7fe08bf6d
4 changed files with 572 additions and 175 deletions
|
|
@ -20,10 +20,7 @@ use glib::subclass;
|
||||||
use glib::subclass::prelude::*;
|
use glib::subclass::prelude::*;
|
||||||
use gst::prelude::*;
|
use gst::prelude::*;
|
||||||
use gst::subclass::prelude::*;
|
use gst::subclass::prelude::*;
|
||||||
use gst::{
|
use gst::{gst_debug, gst_element_error, gst_error, gst_error_msg, gst_info, gst_warning};
|
||||||
gst_debug, gst_element_error, gst_element_warning, gst_error, gst_error_msg, gst_info,
|
|
||||||
gst_warning,
|
|
||||||
};
|
|
||||||
|
|
||||||
use std::mem;
|
use std::mem;
|
||||||
use std::sync::Mutex;
|
use std::sync::Mutex;
|
||||||
|
|
@ -32,6 +29,7 @@ use std::time::{Duration, Instant};
|
||||||
use once_cell::sync::Lazy;
|
use once_cell::sync::Lazy;
|
||||||
|
|
||||||
use super::custom_source::CustomSource;
|
use super::custom_source::CustomSource;
|
||||||
|
use super::video_fallback::VideoFallbackSource;
|
||||||
use super::{RetryReason, Status};
|
use super::{RetryReason, Status};
|
||||||
|
|
||||||
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
|
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
|
||||||
|
|
@ -756,180 +754,11 @@ impl FallbackSrc {
|
||||||
|
|
||||||
fn create_fallback_video_input(
|
fn create_fallback_video_input(
|
||||||
&self,
|
&self,
|
||||||
element: &super::FallbackSrc,
|
_element: &super::FallbackSrc,
|
||||||
min_latency: u64,
|
min_latency: u64,
|
||||||
fallback_uri: Option<&str>,
|
fallback_uri: Option<&str>,
|
||||||
) -> Result<gst::Element, gst::StateChangeError> {
|
) -> Result<gst::Element, gst::StateChangeError> {
|
||||||
let input = gst::Bin::new(Some("fallback_video"));
|
Ok(VideoFallbackSource::new(fallback_uri, min_latency).upcast())
|
||||||
|
|
||||||
let srcpad = match fallback_uri {
|
|
||||||
Some(fallback_uri) => {
|
|
||||||
let filesrc = gst::ElementFactory::make("filesrc", Some("fallback_filesrc"))
|
|
||||||
.expect("No filesrc found");
|
|
||||||
let typefind = gst::ElementFactory::make("typefind", Some("fallback_typefind"))
|
|
||||||
.expect("No typefind found");
|
|
||||||
let videoconvert =
|
|
||||||
gst::ElementFactory::make("videoconvert", Some("fallback_videoconvert"))
|
|
||||||
.expect("No videoconvert found");
|
|
||||||
let videoscale =
|
|
||||||
gst::ElementFactory::make("videoscale", Some("fallback_videoscale"))
|
|
||||||
.expect("No videoscale found");
|
|
||||||
let imagefreeze =
|
|
||||||
gst::ElementFactory::make("imagefreeze", Some("fallback_imagefreeze"))
|
|
||||||
.expect("No imagefreeze found");
|
|
||||||
let clocksync = gst::ElementFactory::make("clocksync", Some("fallback_clocksync"))
|
|
||||||
.or_else(|_| -> Result<_, glib::BoolError> {
|
|
||||||
let identity =
|
|
||||||
gst::ElementFactory::make("identity", Some("fallback_clocksync"))?;
|
|
||||||
identity.set_property("sync", &true).unwrap();
|
|
||||||
Ok(identity)
|
|
||||||
})
|
|
||||||
.expect("No clocksync or identity found");
|
|
||||||
let queue = gst::ElementFactory::make("queue", Some("fallback_queue"))
|
|
||||||
.expect("No queue found");
|
|
||||||
queue
|
|
||||||
.set_properties(&[
|
|
||||||
("max-size-buffers", &0u32),
|
|
||||||
("max-size-bytes", &0u32),
|
|
||||||
(
|
|
||||||
"max-size-time",
|
|
||||||
&gst::ClockTime::max(5 * gst::SECOND, min_latency.into()).unwrap(),
|
|
||||||
),
|
|
||||||
])
|
|
||||||
.unwrap();
|
|
||||||
|
|
||||||
input
|
|
||||||
.add_many(&[
|
|
||||||
&filesrc,
|
|
||||||
&typefind,
|
|
||||||
&videoconvert,
|
|
||||||
&videoscale,
|
|
||||||
&imagefreeze,
|
|
||||||
&clocksync,
|
|
||||||
&queue,
|
|
||||||
])
|
|
||||||
.unwrap();
|
|
||||||
gst::Element::link_many(&[&filesrc, &typefind]).unwrap();
|
|
||||||
gst::Element::link_many(&[
|
|
||||||
&videoconvert,
|
|
||||||
&videoscale,
|
|
||||||
&imagefreeze,
|
|
||||||
&clocksync,
|
|
||||||
&queue,
|
|
||||||
])
|
|
||||||
.unwrap();
|
|
||||||
|
|
||||||
filesrc
|
|
||||||
.dynamic_cast_ref::<gst::URIHandler>()
|
|
||||||
.unwrap()
|
|
||||||
.set_uri(fallback_uri)
|
|
||||||
.map_err(|err| {
|
|
||||||
gst_error!(CAT, obj: element, "Failed to set fallback URI: {}", err);
|
|
||||||
gst_element_error!(
|
|
||||||
element,
|
|
||||||
gst::LibraryError::Settings,
|
|
||||||
["Failed to set fallback URI: {}", err]
|
|
||||||
);
|
|
||||||
gst::StateChangeError
|
|
||||||
})?;
|
|
||||||
|
|
||||||
if imagefreeze.set_property("is-live", &true).is_err() {
|
|
||||||
gst_error!(
|
|
||||||
CAT,
|
|
||||||
obj: element,
|
|
||||||
"imagefreeze does not support live mode, this will probably misbehave"
|
|
||||||
);
|
|
||||||
gst_element_warning!(
|
|
||||||
element,
|
|
||||||
gst::LibraryError::Settings,
|
|
||||||
["imagefreeze does not support live mode, this will probably misbehave"]
|
|
||||||
);
|
|
||||||
}
|
|
||||||
|
|
||||||
let element_weak = element.downgrade();
|
|
||||||
let input_weak = input.downgrade();
|
|
||||||
let videoconvert_weak = videoconvert.downgrade();
|
|
||||||
typefind
|
|
||||||
.connect("have-type", false, move |args| {
|
|
||||||
let typefind = args[0].get::<gst::Element>().unwrap().unwrap();
|
|
||||||
let _probability = args[1].get_some::<u32>().unwrap();
|
|
||||||
let caps = args[2].get::<gst::Caps>().unwrap().unwrap();
|
|
||||||
|
|
||||||
let element = match element_weak.upgrade() {
|
|
||||||
Some(element) => element,
|
|
||||||
None => return None,
|
|
||||||
};
|
|
||||||
|
|
||||||
let input = match input_weak.upgrade() {
|
|
||||||
Some(element) => element,
|
|
||||||
None => return None,
|
|
||||||
};
|
|
||||||
|
|
||||||
let videoconvert = match videoconvert_weak.upgrade() {
|
|
||||||
Some(element) => element,
|
|
||||||
None => return None,
|
|
||||||
};
|
|
||||||
|
|
||||||
let s = caps.get_structure(0).unwrap();
|
|
||||||
let decoder;
|
|
||||||
if s.get_name() == "image/jpeg" {
|
|
||||||
decoder = gst::ElementFactory::make("jpegdec", Some("decoder"))
|
|
||||||
.expect("jpegdec not found");
|
|
||||||
} else if s.get_name() == "image/png" {
|
|
||||||
decoder = gst::ElementFactory::make("pngdec", Some("decoder"))
|
|
||||||
.expect("pngdec not found");
|
|
||||||
} else {
|
|
||||||
gst_error!(CAT, obj: &element, "Unsupported caps {}", caps);
|
|
||||||
gst_element_error!(
|
|
||||||
element,
|
|
||||||
gst::StreamError::Format,
|
|
||||||
["Unsupported caps {}", caps]
|
|
||||||
);
|
|
||||||
return None;
|
|
||||||
}
|
|
||||||
|
|
||||||
input.add(&decoder).unwrap();
|
|
||||||
decoder.sync_state_with_parent().unwrap();
|
|
||||||
if let Err(_err) =
|
|
||||||
gst::Element::link_many(&[&typefind, &decoder, &videoconvert])
|
|
||||||
{
|
|
||||||
gst_error!(CAT, obj: &element, "Can't link fallback image decoder");
|
|
||||||
gst_element_error!(
|
|
||||||
element,
|
|
||||||
gst::StreamError::Format,
|
|
||||||
["Can't link fallback image decoder"]
|
|
||||||
);
|
|
||||||
return None;
|
|
||||||
}
|
|
||||||
|
|
||||||
None
|
|
||||||
})
|
|
||||||
.unwrap();
|
|
||||||
|
|
||||||
queue.get_static_pad("src").unwrap()
|
|
||||||
}
|
|
||||||
None => {
|
|
||||||
let videotestsrc =
|
|
||||||
gst::ElementFactory::make("videotestsrc", Some("fallback_videosrc"))
|
|
||||||
.expect("No videotestsrc found");
|
|
||||||
input.add_many(&[&videotestsrc]).unwrap();
|
|
||||||
|
|
||||||
videotestsrc.set_property_from_str("pattern", "black");
|
|
||||||
videotestsrc.set_property("is-live", &true).unwrap();
|
|
||||||
|
|
||||||
videotestsrc.get_static_pad("src").unwrap()
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
input
|
|
||||||
.add_pad(
|
|
||||||
&gst::GhostPad::builder(Some("src"), gst::PadDirection::Src)
|
|
||||||
.build_with_target(&srcpad)
|
|
||||||
.unwrap(),
|
|
||||||
)
|
|
||||||
.unwrap();
|
|
||||||
|
|
||||||
Ok(input.upcast())
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn create_fallback_audio_input(
|
fn create_fallback_audio_input(
|
||||||
|
|
@ -1964,6 +1793,46 @@ impl FallbackSrc {
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// Check if error is from video fallback input and if so, try another
|
||||||
|
// fallback to videotestsrc
|
||||||
|
if let Some(ref mut video_stream) = state.video_stream {
|
||||||
|
if src == video_stream.fallback_input
|
||||||
|
|| src.has_as_ancestor(&video_stream.fallback_input)
|
||||||
|
{
|
||||||
|
gst_debug!(CAT, obj: element, "Got error from video fallback input");
|
||||||
|
|
||||||
|
let prev_fallback_uri = video_stream
|
||||||
|
.fallback_input
|
||||||
|
.get_property("uri")
|
||||||
|
.unwrap()
|
||||||
|
.get::<String>()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
// This means previously videotestsrc was configured
|
||||||
|
// Something went wrong and there is no other way than to error out
|
||||||
|
if prev_fallback_uri.is_none() {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
let fallback_input = &video_stream.fallback_input;
|
||||||
|
fallback_input.call_async(|fallback_input| {
|
||||||
|
// Re-run video fallback input with videotestsrc
|
||||||
|
let _ = fallback_input.set_state(gst::State::Null);
|
||||||
|
let _ = fallback_input.set_property("uri", &None::<&str>);
|
||||||
|
let _ = fallback_input.sync_state_with_parent();
|
||||||
|
});
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
gst_error!(
|
||||||
|
CAT,
|
||||||
|
obj: element,
|
||||||
|
"Give up for error message from {}",
|
||||||
|
src.get_path_string()
|
||||||
|
);
|
||||||
|
|
||||||
false
|
false
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -19,6 +19,7 @@ use glib::prelude::*;
|
||||||
|
|
||||||
mod custom_source;
|
mod custom_source;
|
||||||
mod imp;
|
mod imp;
|
||||||
|
mod video_fallback;
|
||||||
|
|
||||||
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Clone, Copy, glib::GEnum)]
|
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Clone, Copy, glib::GEnum)]
|
||||||
#[repr(u32)]
|
#[repr(u32)]
|
||||||
|
|
|
||||||
485
utils/fallbackswitch/src/fallbacksrc/video_fallback/imp.rs
Normal file
485
utils/fallbackswitch/src/fallbacksrc/video_fallback/imp.rs
Normal file
|
|
@ -0,0 +1,485 @@
|
||||||
|
// Copyright (C) 2020 Sebastian Dröge <sebastian@centricular.com>
|
||||||
|
// Copyright (C) 2020 Seungha Yang <seungha@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::prelude::*;
|
||||||
|
use glib::subclass;
|
||||||
|
use glib::subclass::prelude::*;
|
||||||
|
use gst::prelude::*;
|
||||||
|
use gst::subclass::prelude::*;
|
||||||
|
use gst::{gst_debug, gst_element_error, gst_element_warning, gst_error, gst_info, gst_warning};
|
||||||
|
|
||||||
|
use std::sync::{atomic::AtomicBool, atomic::Ordering, Mutex};
|
||||||
|
|
||||||
|
use once_cell::sync::Lazy;
|
||||||
|
|
||||||
|
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
|
||||||
|
gst::DebugCategory::new(
|
||||||
|
"fallbacksrc-video-source",
|
||||||
|
gst::DebugColorFlags::empty(),
|
||||||
|
Some("Fallback Video Source Bin"),
|
||||||
|
)
|
||||||
|
});
|
||||||
|
|
||||||
|
static PROPERTIES: [subclass::Property; 2] = [
|
||||||
|
subclass::Property("uri", |name| {
|
||||||
|
glib::ParamSpec::string(
|
||||||
|
name,
|
||||||
|
"URI",
|
||||||
|
"URI to use for video in case the main stream doesn't work",
|
||||||
|
None,
|
||||||
|
glib::ParamFlags::READWRITE,
|
||||||
|
)
|
||||||
|
}),
|
||||||
|
subclass::Property("min-latency", |name| {
|
||||||
|
glib::ParamSpec::uint64(
|
||||||
|
name,
|
||||||
|
"Minimum Latency",
|
||||||
|
"Minimum Latency",
|
||||||
|
0,
|
||||||
|
std::u64::MAX,
|
||||||
|
0,
|
||||||
|
glib::ParamFlags::READWRITE,
|
||||||
|
)
|
||||||
|
}),
|
||||||
|
];
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
struct Settings {
|
||||||
|
uri: Option<String>,
|
||||||
|
min_latency: u64,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Default for Settings {
|
||||||
|
fn default() -> Self {
|
||||||
|
Settings {
|
||||||
|
uri: None,
|
||||||
|
min_latency: 0,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct State {
|
||||||
|
source: gst::Element,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub struct VideoFallbackSource {
|
||||||
|
srcpad: gst::GhostPad,
|
||||||
|
got_error: AtomicBool,
|
||||||
|
|
||||||
|
state: Mutex<Option<State>>,
|
||||||
|
settings: Mutex<Settings>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ObjectSubclass for VideoFallbackSource {
|
||||||
|
const NAME: &'static str = "FallbackSrcVideoFallbackSource";
|
||||||
|
type Type = super::VideoFallbackSource;
|
||||||
|
type ParentType = gst::Bin;
|
||||||
|
type Instance = gst::subclass::ElementInstanceStruct<Self>;
|
||||||
|
type Class = subclass::simple::ClassStruct<Self>;
|
||||||
|
|
||||||
|
glib::glib_object_subclass!();
|
||||||
|
|
||||||
|
fn with_class(klass: &Self::Class) -> Self {
|
||||||
|
let templ = klass.get_pad_template("src").unwrap();
|
||||||
|
let srcpad = gst::GhostPad::builder_with_template(&templ, Some(&templ.get_name())).build();
|
||||||
|
|
||||||
|
Self {
|
||||||
|
srcpad,
|
||||||
|
got_error: AtomicBool::new(false),
|
||||||
|
state: Mutex::new(None),
|
||||||
|
settings: Mutex::new(Settings::default()),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn class_init(klass: &mut Self::Class) {
|
||||||
|
let src_pad_template = gst::PadTemplate::new(
|
||||||
|
"src",
|
||||||
|
gst::PadDirection::Src,
|
||||||
|
gst::PadPresence::Always,
|
||||||
|
&gst::Caps::new_any(),
|
||||||
|
)
|
||||||
|
.unwrap();
|
||||||
|
klass.add_pad_template(src_pad_template);
|
||||||
|
klass.install_properties(&PROPERTIES);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ObjectImpl for VideoFallbackSource {
|
||||||
|
fn set_property(&self, obj: &Self::Type, id: usize, value: &glib::Value) {
|
||||||
|
let prop = &PROPERTIES[id];
|
||||||
|
|
||||||
|
match *prop {
|
||||||
|
subclass::Property("uri", ..) => {
|
||||||
|
let mut settings = self.settings.lock().unwrap();
|
||||||
|
let new_value = value.get().expect("type checked upstream");
|
||||||
|
gst_info!(
|
||||||
|
CAT,
|
||||||
|
obj: obj,
|
||||||
|
"Changing URI from {:?} to {:?}",
|
||||||
|
settings.uri,
|
||||||
|
new_value,
|
||||||
|
);
|
||||||
|
settings.uri = new_value;
|
||||||
|
}
|
||||||
|
subclass::Property("min-latency", ..) => {
|
||||||
|
let mut settings = self.settings.lock().unwrap();
|
||||||
|
let new_value = value.get_some().expect("type checked upstream");
|
||||||
|
gst_info!(
|
||||||
|
CAT,
|
||||||
|
obj: obj,
|
||||||
|
"Changing Minimum Latency from {:?} to {:?}",
|
||||||
|
settings.min_latency,
|
||||||
|
new_value,
|
||||||
|
);
|
||||||
|
settings.min_latency = new_value;
|
||||||
|
}
|
||||||
|
_ => unreachable!(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_property(&self, _obj: &Self::Type, id: usize) -> glib::Value {
|
||||||
|
let prop = &PROPERTIES[id];
|
||||||
|
|
||||||
|
match *prop {
|
||||||
|
subclass::Property("uri", ..) => {
|
||||||
|
let settings = self.settings.lock().unwrap();
|
||||||
|
settings.uri.to_value()
|
||||||
|
}
|
||||||
|
subclass::Property("min-latency", ..) => {
|
||||||
|
let settings = self.settings.lock().unwrap();
|
||||||
|
settings.min_latency.to_value()
|
||||||
|
}
|
||||||
|
_ => unimplemented!(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn constructed(&self, obj: &Self::Type) {
|
||||||
|
self.parent_constructed(obj);
|
||||||
|
|
||||||
|
obj.set_suppressed_flags(gst::ElementFlags::SOURCE | gst::ElementFlags::SINK);
|
||||||
|
obj.set_element_flags(gst::ElementFlags::SOURCE);
|
||||||
|
obj.add_pad(&self.srcpad).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ElementImpl for VideoFallbackSource {
|
||||||
|
#[allow(clippy::single_match)]
|
||||||
|
fn change_state(
|
||||||
|
&self,
|
||||||
|
element: &Self::Type,
|
||||||
|
transition: gst::StateChange,
|
||||||
|
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
|
||||||
|
match transition {
|
||||||
|
gst::StateChange::NullToReady => {
|
||||||
|
self.start(element)?;
|
||||||
|
}
|
||||||
|
_ => (),
|
||||||
|
}
|
||||||
|
|
||||||
|
self.parent_change_state(element, transition)?;
|
||||||
|
|
||||||
|
match transition {
|
||||||
|
gst::StateChange::ReadyToNull => {
|
||||||
|
self.stop(element)?;
|
||||||
|
}
|
||||||
|
_ => (),
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(gst::StateChangeSuccess::Success)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl BinImpl for VideoFallbackSource {
|
||||||
|
#[allow(clippy::single_match)]
|
||||||
|
fn handle_message(&self, bin: &Self::Type, msg: gst::Message) {
|
||||||
|
use gst::MessageView;
|
||||||
|
|
||||||
|
match msg.view() {
|
||||||
|
MessageView::Error(err) => {
|
||||||
|
if !self
|
||||||
|
.got_error
|
||||||
|
.compare_and_swap(false, true, Ordering::SeqCst)
|
||||||
|
{
|
||||||
|
gst_warning!(CAT, obj: bin, "Got error {:?}", err);
|
||||||
|
self.parent_handle_message(bin, msg)
|
||||||
|
} else {
|
||||||
|
// Suppress error message if we posted error previously.
|
||||||
|
// Otherwise parent fallbacksrc would be confused by
|
||||||
|
// multiple error message.
|
||||||
|
gst_debug!(CAT, obj: bin, "Ignore error {:?}", err);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
_ => self.parent_handle_message(bin, msg),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl VideoFallbackSource {
|
||||||
|
fn get_file_src_for_uri(
|
||||||
|
&self,
|
||||||
|
element: &super::VideoFallbackSource,
|
||||||
|
uri: Option<&str>,
|
||||||
|
) -> Option<gst::Element> {
|
||||||
|
uri?;
|
||||||
|
|
||||||
|
let uri = uri.unwrap();
|
||||||
|
let filesrc = gst::ElementFactory::make("filesrc", Some("fallback_filesrc"))
|
||||||
|
.expect("No filesrc found");
|
||||||
|
|
||||||
|
if let Err(err) = filesrc
|
||||||
|
.dynamic_cast_ref::<gst::URIHandler>()
|
||||||
|
.unwrap()
|
||||||
|
.set_uri(uri)
|
||||||
|
{
|
||||||
|
gst_warning!(CAT, obj: element, "Failed to set URI: {}", err);
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
|
||||||
|
if filesrc.set_state(gst::State::Ready).is_err() {
|
||||||
|
gst_warning!(CAT, obj: element, "Couldn't set state READY");
|
||||||
|
let _ = filesrc.set_state(gst::State::Null);
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
|
||||||
|
// To invoke GstBaseSrc::start() method, activate pad manually.
|
||||||
|
// filesrc will check whether given file is readable or not
|
||||||
|
// via open() and fstat() in there.
|
||||||
|
let pad = filesrc.get_static_pad("src").unwrap();
|
||||||
|
if pad.set_active(true).is_err() {
|
||||||
|
gst_warning!(CAT, obj: element, "Couldn't active pad");
|
||||||
|
let _ = filesrc.set_state(gst::State::Null);
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
|
||||||
|
Some(filesrc)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn create_source(
|
||||||
|
&self,
|
||||||
|
element: &super::VideoFallbackSource,
|
||||||
|
min_latency: u64,
|
||||||
|
uri: Option<&str>,
|
||||||
|
) -> Result<gst::Element, gst::StateChangeError> {
|
||||||
|
gst_debug!(CAT, obj: element, "Creating source with uri {:?}", uri);
|
||||||
|
|
||||||
|
let source = gst::Bin::new(None);
|
||||||
|
let filesrc = self.get_file_src_for_uri(element, uri);
|
||||||
|
|
||||||
|
let srcpad = match filesrc {
|
||||||
|
Some(filesrc) => {
|
||||||
|
let typefind = gst::ElementFactory::make("typefind", Some("fallback_typefind"))
|
||||||
|
.expect("No typefind found");
|
||||||
|
let videoconvert =
|
||||||
|
gst::ElementFactory::make("videoconvert", Some("fallback_videoconvert"))
|
||||||
|
.expect("No videoconvert found");
|
||||||
|
let videoscale =
|
||||||
|
gst::ElementFactory::make("videoscale", Some("fallback_videoscale"))
|
||||||
|
.expect("No videoscale found");
|
||||||
|
let imagefreeze =
|
||||||
|
gst::ElementFactory::make("imagefreeze", Some("fallback_imagefreeze"))
|
||||||
|
.expect("No imagefreeze found");
|
||||||
|
let clocksync = gst::ElementFactory::make("clocksync", Some("fallback_clocksync"))
|
||||||
|
.or_else(|_| -> Result<_, glib::BoolError> {
|
||||||
|
let identity =
|
||||||
|
gst::ElementFactory::make("identity", Some("fallback_clocksync"))?;
|
||||||
|
identity.set_property("sync", &true).unwrap();
|
||||||
|
Ok(identity)
|
||||||
|
})
|
||||||
|
.expect("No clocksync or identity found");
|
||||||
|
let queue = gst::ElementFactory::make("queue", Some("fallback_queue"))
|
||||||
|
.expect("No queue found");
|
||||||
|
queue
|
||||||
|
.set_properties(&[
|
||||||
|
("max-size-buffers", &0u32),
|
||||||
|
("max-size-bytes", &0u32),
|
||||||
|
(
|
||||||
|
"max-size-time",
|
||||||
|
&gst::ClockTime::max(5 * gst::SECOND, min_latency.into()).unwrap(),
|
||||||
|
),
|
||||||
|
])
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
source
|
||||||
|
.add_many(&[
|
||||||
|
&filesrc,
|
||||||
|
&typefind,
|
||||||
|
&videoconvert,
|
||||||
|
&videoscale,
|
||||||
|
&imagefreeze,
|
||||||
|
&clocksync,
|
||||||
|
&queue,
|
||||||
|
])
|
||||||
|
.unwrap();
|
||||||
|
gst::Element::link_many(&[&filesrc, &typefind]).unwrap();
|
||||||
|
gst::Element::link_many(&[
|
||||||
|
&videoconvert,
|
||||||
|
&videoscale,
|
||||||
|
&imagefreeze,
|
||||||
|
&clocksync,
|
||||||
|
&queue,
|
||||||
|
])
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
if imagefreeze.set_property("is-live", &true).is_err() {
|
||||||
|
gst_error!(
|
||||||
|
CAT,
|
||||||
|
obj: element,
|
||||||
|
"imagefreeze does not support live mode, this will probably misbehave"
|
||||||
|
);
|
||||||
|
gst_element_warning!(
|
||||||
|
element,
|
||||||
|
gst::LibraryError::Settings,
|
||||||
|
["imagefreeze does not support live mode, this will probably misbehave"]
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
let element_weak = element.downgrade();
|
||||||
|
let source_weak = source.downgrade();
|
||||||
|
let videoconvert_weak = videoconvert.downgrade();
|
||||||
|
typefind
|
||||||
|
.connect("have-type", false, move |args| {
|
||||||
|
let typefind = args[0].get::<gst::Element>().unwrap().unwrap();
|
||||||
|
let _probability = args[1].get_some::<u32>().unwrap();
|
||||||
|
let caps = args[2].get::<gst::Caps>().unwrap().unwrap();
|
||||||
|
|
||||||
|
let element = match element_weak.upgrade() {
|
||||||
|
Some(element) => element,
|
||||||
|
None => return None,
|
||||||
|
};
|
||||||
|
|
||||||
|
let source = match source_weak.upgrade() {
|
||||||
|
Some(element) => element,
|
||||||
|
None => return None,
|
||||||
|
};
|
||||||
|
|
||||||
|
let videoconvert = match videoconvert_weak.upgrade() {
|
||||||
|
Some(element) => element,
|
||||||
|
None => return None,
|
||||||
|
};
|
||||||
|
|
||||||
|
let s = caps.get_structure(0).unwrap();
|
||||||
|
let decoder;
|
||||||
|
if s.get_name() == "image/jpeg" {
|
||||||
|
decoder = gst::ElementFactory::make("jpegdec", Some("decoder"))
|
||||||
|
.expect("jpegdec not found");
|
||||||
|
} else if s.get_name() == "image/png" {
|
||||||
|
decoder = gst::ElementFactory::make("pngdec", Some("decoder"))
|
||||||
|
.expect("pngdec not found");
|
||||||
|
} else {
|
||||||
|
gst_error!(CAT, obj: &element, "Unsupported caps {}", caps);
|
||||||
|
gst_element_error!(
|
||||||
|
element,
|
||||||
|
gst::StreamError::Format,
|
||||||
|
["Unsupported caps {}", caps]
|
||||||
|
);
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
|
||||||
|
source.add(&decoder).unwrap();
|
||||||
|
decoder.sync_state_with_parent().unwrap();
|
||||||
|
if let Err(_err) =
|
||||||
|
gst::Element::link_many(&[&typefind, &decoder, &videoconvert])
|
||||||
|
{
|
||||||
|
gst_error!(CAT, obj: &element, "Can't link fallback image decoder");
|
||||||
|
gst_element_error!(
|
||||||
|
element,
|
||||||
|
gst::StreamError::Format,
|
||||||
|
["Can't link fallback image decoder"]
|
||||||
|
);
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
|
||||||
|
None
|
||||||
|
})
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
queue.get_static_pad("src").unwrap()
|
||||||
|
}
|
||||||
|
None => {
|
||||||
|
let videotestsrc =
|
||||||
|
gst::ElementFactory::make("videotestsrc", Some("fallback_videosrc"))
|
||||||
|
.expect("No videotestsrc found");
|
||||||
|
source.add_many(&[&videotestsrc]).unwrap();
|
||||||
|
|
||||||
|
videotestsrc.set_property_from_str("pattern", "black");
|
||||||
|
videotestsrc.set_property("is-live", &true).unwrap();
|
||||||
|
|
||||||
|
videotestsrc.get_static_pad("src").unwrap()
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
source
|
||||||
|
.add_pad(
|
||||||
|
&gst::GhostPad::builder(Some("src"), gst::PadDirection::Src)
|
||||||
|
.build_with_target(&srcpad)
|
||||||
|
.unwrap(),
|
||||||
|
)
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
Ok(source.upcast())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn start(
|
||||||
|
&self,
|
||||||
|
element: &super::VideoFallbackSource,
|
||||||
|
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
|
||||||
|
gst_debug!(CAT, obj: element, "Starting");
|
||||||
|
|
||||||
|
let mut state_guard = self.state.lock().unwrap();
|
||||||
|
if state_guard.is_some() {
|
||||||
|
gst_error!(CAT, obj: element, "State struct wasn't cleared");
|
||||||
|
return Err(gst::StateChangeError);
|
||||||
|
}
|
||||||
|
|
||||||
|
let settings = self.settings.lock().unwrap().clone();
|
||||||
|
let uri = &settings.uri;
|
||||||
|
let source = self.create_source(element, settings.min_latency, uri.as_deref())?;
|
||||||
|
|
||||||
|
element.add(&source).unwrap();
|
||||||
|
|
||||||
|
let srcpad = source.get_static_pad("src").unwrap();
|
||||||
|
let _ = self.srcpad.set_target(Some(&srcpad));
|
||||||
|
|
||||||
|
*state_guard = Some(State { source });
|
||||||
|
|
||||||
|
Ok(gst::StateChangeSuccess::Success)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn stop(
|
||||||
|
&self,
|
||||||
|
element: &super::VideoFallbackSource,
|
||||||
|
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
|
||||||
|
gst_debug!(CAT, obj: element, "Stopping");
|
||||||
|
|
||||||
|
let mut state_guard = self.state.lock().unwrap();
|
||||||
|
let state = match state_guard.take() {
|
||||||
|
Some(state) => state,
|
||||||
|
None => return Ok(gst::StateChangeSuccess::Success),
|
||||||
|
};
|
||||||
|
|
||||||
|
drop(state_guard);
|
||||||
|
|
||||||
|
let _ = state.source.set_state(gst::State::Null);
|
||||||
|
let _ = self.srcpad.set_target(None::<&gst::Pad>);
|
||||||
|
element.remove(&state.source).unwrap();
|
||||||
|
self.got_error.store(false, Ordering::Relaxed);
|
||||||
|
gst_debug!(CAT, obj: element, "Stopped");
|
||||||
|
|
||||||
|
Ok(gst::StateChangeSuccess::Success)
|
||||||
|
}
|
||||||
|
}
|
||||||
42
utils/fallbackswitch/src/fallbacksrc/video_fallback/mod.rs
Normal file
42
utils/fallbackswitch/src/fallbacksrc/video_fallback/mod.rs
Normal file
|
|
@ -0,0 +1,42 @@
|
||||||
|
// Copyright (C) 2020 Sebastian Dröge <sebastian@centricular.com>
|
||||||
|
// Copyright (C) 2020 Seungha Yang <seungha@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::prelude::*;
|
||||||
|
|
||||||
|
mod imp;
|
||||||
|
|
||||||
|
glib::glib_wrapper! {
|
||||||
|
pub struct VideoFallbackSource(ObjectSubclass<imp::VideoFallbackSource>) @extends gst::Bin, gst::Element, gst::Object;
|
||||||
|
}
|
||||||
|
|
||||||
|
// GStreamer elements need to be thread-safe. For the private implementation this is automatically
|
||||||
|
// enforced but for the public wrapper type we need to specify this manually.
|
||||||
|
unsafe impl Send for VideoFallbackSource {}
|
||||||
|
unsafe impl Sync for VideoFallbackSource {}
|
||||||
|
|
||||||
|
impl VideoFallbackSource {
|
||||||
|
pub fn new(uri: Option<&str>, min_latency: u64) -> VideoFallbackSource {
|
||||||
|
glib::Object::new(
|
||||||
|
VideoFallbackSource::static_type(),
|
||||||
|
&[("uri", &uri), ("min-latency", &min_latency)],
|
||||||
|
)
|
||||||
|
.unwrap()
|
||||||
|
.downcast()
|
||||||
|
.unwrap()
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue