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Update example

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This commit is contained in:
Rafael Caricio 2022-04-16 20:00:22 +02:00
parent d8e9295b91
commit fc9707fe66
Signed by: rafaelcaricio
GPG key ID: 3C86DBCE8E93C947
2 changed files with 51 additions and 335 deletions
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296
pipeline.dot
View file

@ -1,296 +0,0 @@
digraph pipeline {
rankdir=LR;
fontname="sans";
fontsize="10";
labelloc=t;
nodesep=.1;
ranksep=.2;
label="<GstPipeline>\npipeline0\n[>]";
node [style="filled,rounded", shape=box, fontsize="9", fontname="sans", margin="0.0,0.0"];
edge [labelfontsize="6", fontsize="9", fontname="monospace"];
legend [
pos="0,0!",
margin="0.05,0.05",
style="filled",
label="Legend\lElement-States: [~] void-pending, [0] null, [-] ready, [=] paused, [>] playing\lPad-Activation: [-] none, [>] push, [<] pull\lPad-Flags: [b]locked, [f]lushing, [b]locking, [E]OS; upper-case is set\lPad-Task: [T] has started task, [t] has paused task\l",
];
subgraph cluster_capsfilter1_0x7f8f2691e5d0 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstCapsFilter\ncapsfilter1\n[>]\ncaps=video/x-h264, profile=(string)main";
subgraph cluster_capsfilter1_0x7f8f2691e5d0_sink {
label="";
style="invis";
capsfilter1_0x7f8f2691e5d0_sink_0x7f8f23076e20 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_capsfilter1_0x7f8f2691e5d0_src {
label="";
style="invis";
capsfilter1_0x7f8f2691e5d0_src_0x7f8f23077070 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
capsfilter1_0x7f8f2691e5d0_sink_0x7f8f23076e20 -> capsfilter1_0x7f8f2691e5d0_src_0x7f8f23077070 [style="invis"];
fillcolor="#aaffaa";
}
capsfilter1_0x7f8f2691e5d0_src_0x7f8f23077070 -> queue0_0x7f8f24028010_sink_0x7f8f268f0d50 [label="video/x-h264\l stream-format: byte-stream\l alignment: au\l level: 3.1\l profile: main\l width: 1280\l height: 720\l pixel-aspect-ratio: 1/1\l framerate: 30/1\l interlace-mode: progressive\l colorimetry: bt709\l chroma-site: mpeg2\l multiview-mode: mono\l multiview-flags: 0:ffffffff:/right-view...\l"]
subgraph cluster_capsfilter0_0x7f8f2691e290 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstCapsFilter\ncapsfilter0\n[>]\ncaps=video/x-raw, framerate=(fraction)30/1, width=(int)1280, height=(int)720";
subgraph cluster_capsfilter0_0x7f8f2691e290_sink {
label="";
style="invis";
capsfilter0_0x7f8f2691e290_sink_0x7f8f23076980 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_capsfilter0_0x7f8f2691e290_src {
label="";
style="invis";
capsfilter0_0x7f8f2691e290_src_0x7f8f23076bd0 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
capsfilter0_0x7f8f2691e290_sink_0x7f8f23076980 -> capsfilter0_0x7f8f2691e290_src_0x7f8f23076bd0 [style="invis"];
fillcolor="#aaffaa";
}
capsfilter0_0x7f8f2691e290_src_0x7f8f23076bd0 -> timeoverlay0_0x7f8f268f2a00_video_sink_0x7f8f268f0410 [label="video/x-raw\l format: I420\l width: 1280\l height: 720\l framerate: 30/1\l multiview-mode: mono\l pixel-aspect-ratio: 1/1\l interlace-mode: progressive\l"]
subgraph cluster_queue1_0x7f8f24028310 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstQueue\nqueue1\n[>]";
subgraph cluster_queue1_0x7f8f24028310_sink {
label="";
style="invis";
queue1_0x7f8f24028310_sink_0x7f8f230764e0 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_queue1_0x7f8f24028310_src {
label="";
style="invis";
queue1_0x7f8f24028310_src_0x7f8f23076730 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb][T]", height="0.2", style="filled,solid"];
}
queue1_0x7f8f24028310_sink_0x7f8f230764e0 -> queue1_0x7f8f24028310_src_0x7f8f23076730 [style="invis"];
fillcolor="#aaffaa";
}
queue1_0x7f8f24028310_src_0x7f8f23076730 -> mux_0x7f8f23062190_sink_66_0x7f8f26008f60 [label="audio/mpeg\l channels: 1\l rate: 44100\l mpegversion: 4\l base-profile: lc\l framed: true\l stream-format: raw\l level: 2\l profile: lc\l codec_data: 120856e500\l"]
subgraph cluster_avenc_aac0_0x7f8f268fb270 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="avenc_aac\navenc_aac0\n[>]\nbitrate=128000";
subgraph cluster_avenc_aac0_0x7f8f268fb270_sink {
label="";
style="invis";
avenc_aac0_0x7f8f268fb270_sink_0x7f8f23076040 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_avenc_aac0_0x7f8f268fb270_src {
label="";
style="invis";
avenc_aac0_0x7f8f268fb270_src_0x7f8f23076290 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
avenc_aac0_0x7f8f268fb270_sink_0x7f8f23076040 -> avenc_aac0_0x7f8f268fb270_src_0x7f8f23076290 [style="invis"];
fillcolor="#aaffaa";
}
avenc_aac0_0x7f8f268fb270_src_0x7f8f23076290 -> queue1_0x7f8f24028310_sink_0x7f8f230764e0 [label="audio/mpeg\l channels: 1\l rate: 44100\l mpegversion: 4\l base-profile: lc\l framed: true\l stream-format: raw\l level: 2\l profile: lc\l codec_data: 120856e500\l"]
subgraph cluster_audioconvert0_0x7f8f230754d0 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstAudioConvert\naudioconvert0\n[>]";
subgraph cluster_audioconvert0_0x7f8f230754d0_sink {
label="";
style="invis";
audioconvert0_0x7f8f230754d0_sink_0x7f8f268f1b30 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_audioconvert0_0x7f8f230754d0_src {
label="";
style="invis";
audioconvert0_0x7f8f230754d0_src_0x7f8f268f1d80 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
audioconvert0_0x7f8f230754d0_sink_0x7f8f268f1b30 -> audioconvert0_0x7f8f230754d0_src_0x7f8f268f1d80 [style="invis"];
fillcolor="#aaffaa";
}
audioconvert0_0x7f8f230754d0_src_0x7f8f268f1d80 -> avenc_aac0_0x7f8f268fb270_sink_0x7f8f23076040 [label="audio/x-raw\l rate: 44100\l channels: 1\l format: F32LE\l layout: interleaved\l"]
subgraph cluster_audiotestsrc0_0x7f8f23071ce0 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstAudioTestSrc\naudiotestsrc0\n[>]\nis-live=TRUE";
subgraph cluster_audiotestsrc0_0x7f8f23071ce0_src {
label="";
style="invis";
audiotestsrc0_0x7f8f23071ce0_src_0x7f8f268f18e0 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb][T]", height="0.2", style="filled,solid"];
}
fillcolor="#ffaaaa";
}
audiotestsrc0_0x7f8f23071ce0_src_0x7f8f268f18e0 -> audioconvert0_0x7f8f230754d0_sink_0x7f8f268f1b30 [label="audio/x-raw\l rate: 44100\l channels: 1\l format: F32LE\l layout: interleaved\l"]
subgraph cluster_udpsink0_0x7f8f2305ba90 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstUDPSink\nudpsink0\n[>]\nlast-sample=((GstSample*) 0x7f8f2607d420)\nbytes-to-serve=50187776\nbytes-served=50187776\nused-socket=((GSocket*) 0x7f8f26016130)\nused-socket-v6=((GSocket*) 0x7f8f26016280)\nclients=\"184.73.103.62:5000\"\nhost=\"184.73.103.62\"\nport=5000";
subgraph cluster_udpsink0_0x7f8f2305ba90_sink {
label="";
style="invis";
udpsink0_0x7f8f2305ba90_sink_0x7f8f268f1690 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
fillcolor="#aaaaff";
}
subgraph cluster_rtpmp2tpay0_0x7f8f2306c0f0 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstRTPMP2TPay\nrtpmp2tpay0\n[>]\npt=33\ntimestamp=1905327734\nseqnum=3460";
subgraph cluster_rtpmp2tpay0_0x7f8f2306c0f0_sink {
label="";
style="invis";
rtpmp2tpay0_0x7f8f2306c0f0_sink_0x7f8f268f1440 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_rtpmp2tpay0_0x7f8f2306c0f0_src {
label="";
style="invis";
rtpmp2tpay0_0x7f8f2306c0f0_src_0x7f8f268f11f0 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
rtpmp2tpay0_0x7f8f2306c0f0_sink_0x7f8f268f1440 -> rtpmp2tpay0_0x7f8f2306c0f0_src_0x7f8f268f11f0 [style="invis"];
fillcolor="#aaffaa";
}
rtpmp2tpay0_0x7f8f2306c0f0_src_0x7f8f268f11f0 -> udpsink0_0x7f8f2305ba90_sink_0x7f8f268f1690 [label="application/x-rtp\l media: video\l clock-rate: 90000\l encoding-name: MP2T\l payload: 33\l seqnum-offset: 31205\l timestamp-offset: 1889868735\l ssrc: 3127985935\l"]
subgraph cluster_mux_0x7f8f23062190 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstMpegTsMux\nmux\n[>]\nalignment=7\nscte-35-pid=500\nscte-35-null-interval=450000";
subgraph cluster_mux_0x7f8f23062190_sink {
label="";
style="invis";
mux_0x7f8f23062190_sink_65_0x7f8f26012960 [color=black, fillcolor="#aaaaff", label="sink_65\n[>][bfb]", height="0.2", style="filled,dashed"];
mux_0x7f8f23062190_sink_66_0x7f8f26008f60 [color=black, fillcolor="#aaaaff", label="sink_66\n[>][bfb]", height="0.2", style="filled,dashed"];
}
subgraph cluster_mux_0x7f8f23062190_src {
label="";
style="invis";
mux_0x7f8f23062190_src_0x7f8f23008360 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb][T]", height="0.2", style="filled,solid"];
}
mux_0x7f8f23062190_sink_65_0x7f8f26012960 -> mux_0x7f8f23062190_src_0x7f8f23008360 [style="invis"];
fillcolor="#aaffaa";
}
mux_0x7f8f23062190_src_0x7f8f23008360 -> rtpmp2tpay0_0x7f8f2306c0f0_sink_0x7f8f268f1440 [label="video/mpegts\l systemstream: true\l packetsize: 188\l streamheader: < (buffer)47400031a6... >\l"]
subgraph cluster_queue0_0x7f8f24028010 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstQueue\nqueue0\n[>]";
subgraph cluster_queue0_0x7f8f24028010_sink {
label="";
style="invis";
queue0_0x7f8f24028010_sink_0x7f8f268f0d50 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_queue0_0x7f8f24028010_src {
label="";
style="invis";
queue0_0x7f8f24028010_src_0x7f8f268f0fa0 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb][T]", height="0.2", style="filled,solid"];
}
queue0_0x7f8f24028010_sink_0x7f8f268f0d50 -> queue0_0x7f8f24028010_src_0x7f8f268f0fa0 [style="invis"];
fillcolor="#aaffaa";
}
queue0_0x7f8f24028010_src_0x7f8f268f0fa0 -> mux_0x7f8f23062190_sink_65_0x7f8f26012960 [label="video/x-h264\l stream-format: byte-stream\l alignment: au\l level: 3.1\l profile: main\l width: 1280\l height: 720\l pixel-aspect-ratio: 1/1\l framerate: 30/1\l interlace-mode: progressive\l colorimetry: bt709\l chroma-site: mpeg2\l multiview-mode: mono\l multiview-flags: 0:ffffffff:/right-view...\l"]
subgraph cluster_encoder_0x7f8f23059550 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstX264Enc\nencoder\n[>]\ntune=zerolatency";
subgraph cluster_encoder_0x7f8f23059550_sink {
label="";
style="invis";
encoder_0x7f8f23059550_sink_0x7f8f268f08b0 [color=black, fillcolor="#aaaaff", label="sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_encoder_0x7f8f23059550_src {
label="";
style="invis";
encoder_0x7f8f23059550_src_0x7f8f268f0b00 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
encoder_0x7f8f23059550_sink_0x7f8f268f08b0 -> encoder_0x7f8f23059550_src_0x7f8f268f0b00 [style="invis"];
fillcolor="#aaffaa";
}
encoder_0x7f8f23059550_src_0x7f8f268f0b00 -> capsfilter1_0x7f8f2691e5d0_sink_0x7f8f23076e20 [label="video/x-h264\l stream-format: byte-stream\l alignment: au\l level: 3.1\l profile: main\l width: 1280\l height: 720\l pixel-aspect-ratio: 1/1\l framerate: 30/1\l interlace-mode: progressive\l colorimetry: bt709\l chroma-site: mpeg2\l multiview-mode: mono\l multiview-flags: 0:ffffffff:/right-view...\l"]
subgraph cluster_timeoverlay0_0x7f8f268f2a00 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstTimeOverlay\ntimeoverlay0\n[>]\nhalignment=left\nvalignment=top\ntext-x=29\ntext-y=31\ntext-width=304\ntext-height=38\ndatetime-epoch=((GDateTime*) 0x7f8f12d0e0e0)";
subgraph cluster_timeoverlay0_0x7f8f268f2a00_sink {
label="";
style="invis";
timeoverlay0_0x7f8f268f2a00_video_sink_0x7f8f268f0410 [color=black, fillcolor="#aaaaff", label="video_sink\n[>][bfb]", height="0.2", style="filled,solid"];
}
subgraph cluster_timeoverlay0_0x7f8f268f2a00_src {
label="";
style="invis";
timeoverlay0_0x7f8f268f2a00_src_0x7f8f268f0660 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb]", height="0.2", style="filled,solid"];
}
timeoverlay0_0x7f8f268f2a00_video_sink_0x7f8f268f0410 -> timeoverlay0_0x7f8f268f2a00_src_0x7f8f268f0660 [style="invis"];
fillcolor="#aaffaa";
}
timeoverlay0_0x7f8f268f2a00_src_0x7f8f268f0660 -> encoder_0x7f8f23059550_sink_0x7f8f268f08b0 [label="video/x-raw\l format: I420\l width: 1280\l height: 720\l framerate: 30/1\l multiview-mode: mono\l pixel-aspect-ratio: 1/1\l interlace-mode: progressive\l"]
subgraph cluster_videotestsrc0_0x7f8f268ec8e0 {
fontname="Bitstream Vera Sans";
fontsize="8";
style="filled,rounded";
color=black;
label="GstVideoTestSrc\nvideotestsrc0\n[>]\nis-live=TRUE";
subgraph cluster_videotestsrc0_0x7f8f268ec8e0_src {
label="";
style="invis";
videotestsrc0_0x7f8f268ec8e0_src_0x7f8f268f01c0 [color=black, fillcolor="#ffaaaa", label="src\n[>][bfb][T]", height="0.2", style="filled,solid"];
}
fillcolor="#ffaaaa";
}
videotestsrc0_0x7f8f268ec8e0_src_0x7f8f268f01c0 -> capsfilter0_0x7f8f2691e290_sink_0x7f8f23076980 [label="video/x-raw\l format: I420\l width: 1280\l height: 720\l framerate: 30/1\l multiview-mode: mono\l pixel-aspect-ratio: 1/1\l interlace-mode: progressive\l"]
}

90
src/main.rs
View file

@ -1,5 +1,6 @@
use glib::translate::ToGlibPtr;
use gst::prelude::*;
use log::info;
use log::{debug, info};
use std::fs::File;
use std::io::Write;
use std::process;
@ -11,9 +12,10 @@ where
C: FnOnce() -> *mut gst_mpegts::GstMpegtsSCTESIT,
{
let sit = gst_sit();
assert!(!sit.is_null());
unsafe {
let section = gst_mpegts::gst_mpegts_section_from_scte_sit(sit, 500);
gst_mpegts::gst_mpegts_section_send_event(section, element.as_ptr());
gst_mpegts::gst_mpegts_section_send_event(section, element.to_glib_none().0);
gst::ffi::gst_mini_object_unref(section as _);
};
}
@ -36,6 +38,22 @@ fn send_splice_out(element: &gst::Element, event_id: u32, time: gst::ClockTime)
})
}
#[derive(Clone)]
pub struct EventId(Arc<Mutex<u32>>);
impl EventId {
pub fn new() -> Self {
Self(Arc::new(Mutex::new(0)))
}
pub fn next(&self) -> u32 {
let mut counter = self.0.lock().unwrap();
*counter += 1;
*counter
}
}
fn main() -> eyre::Result<()> {
pretty_env_logger::init_timed();
gst::init()?;
@ -43,14 +61,17 @@ fn main() -> eyre::Result<()> {
gst_mpegts::gst_mpegts_initialize();
}
// ! rtpmp2tpay ! udpsink sync=true host=184.73.103.62 port=5000
let pipeline = gst::parse_launch(
r#"
audiotestsrc is-live=true ! audioconvert ! avenc_aac bitrate=128000 ! queue ! mux.
videotestsrc is-live=true ! video/x-raw,framerate=30/1,width=1280,height=720 ! timeoverlay ! x264enc tune=zerolatency name=encoder
encoder. ! video/x-h264,profile=main ! queue ! mpegtsmux name=mux scte-35-pid=500 scte-35-null-interval=450000 alignment=7 ! rtpmp2tpay ! udpsink sync=true host=184.73.103.62 port=5000
encoder. ! video/x-h264,profile=main ! queue ! mpegtsmux name=mux scte-35-pid=500 scte-35-null-interval=450000
audiotestsrc is-live=true ! audioconvert ! avenc_aac bitrate=128000 ! queue ! mux.
mux. ! filesink sync=true location=out.ts
"#,
)?
@ -59,12 +80,12 @@ fn main() -> eyre::Result<()> {
info!("Starting pipeline...");
let ad_event_counter = Arc::new(Mutex::new(0u32));
let event_counter = EventId::new();
// Every 90 seconds we will loop on an ad scheduling process..
// Every 60 seconds we will loop on an ad scheduling process..
glib::timeout_add(Duration::from_secs(60), {
let pipeline_weak = pipeline.downgrade();
let ad_event_counter = ad_event_counter.clone();
let event_counter = event_counter.clone();
move || {
if let Some(pipeline) = pipeline_weak.upgrade() {
let muxer = pipeline.by_name("mux").unwrap();
@ -73,39 +94,28 @@ fn main() -> eyre::Result<()> {
// is, so we use the pipeline running time to base our timing calculations
let now = pipeline.current_running_time().unwrap();
// How much ahead should the ad be inserted, we say 5 seconds in the future
// How much ahead should the ad be inserted, we say 0 seconds in the future (immediate)
let ahead = gst::ClockTime::from_seconds(0);
// next event id
let event_id = {
let mut ad_event_counter = ad_event_counter.lock().unwrap();
*ad_event_counter += 1;
*ad_event_counter
};
send_splice_out(&muxer, event_id, now + ahead);
// Trigger the Splice Out event in the SCTE-35 stream
send_splice_out(&muxer, event_counter.next(), now + ahead);
// Now we add a timed call for the duration of the ad from now to indicate via
// splice in that the stream can go back to normal programming.
glib::timeout_add(Duration::from_secs(30), {
let muxer_weak = muxer.downgrade();
let ad_event_counter = ad_event_counter.clone();
let event_counter = event_counter.clone();
move || {
if let Some(muxer) = muxer_weak.upgrade() {
// next event id
let event_id = {
let mut ad_event_counter = ad_event_counter.lock().unwrap();
*ad_event_counter += 1;
*ad_event_counter
};
let now = muxer.current_running_time().unwrap();
send_splice_in(&muxer, event_id, now + ahead);
send_splice_in(&muxer, event_counter.next(), now + ahead);
}
// This don't need to run again
// This shall not run again
glib::Continue(false)
}
});
}
// Run this again next time...
// Run this again after the timeout...
glib::Continue(true)
}
});
@ -118,6 +128,7 @@ fn main() -> eyre::Result<()> {
let bus = pipeline.bus().unwrap();
bus.add_watch({
let main_loop = main_loop.clone();
let pipeline_weak = pipeline.downgrade();
move |_, msg| {
use gst::MessageView;
@ -133,6 +144,19 @@ fn main() -> eyre::Result<()> {
);
main_loop.quit();
}
MessageView::StateChanged(s) => {
if let Some(pipeline) = pipeline_weak.upgrade() {
if s.src().map(|e| e == pipeline).unwrap_or(false) {
debug!("Writing dot file for status: {:?}", s.current());
let mut file = File::create(format!("Pipeline-{:?}.dot", s.current())).unwrap();
let dot_data = pipeline.debug_to_dot_data(
gst::DebugGraphDetails::all(),
);
file.write_all(dot_data.as_bytes()).unwrap();
}
}
}
_ => (),
};
@ -142,21 +166,9 @@ fn main() -> eyre::Result<()> {
.expect("Failed to add bus watch");
ctrlc::set_handler({
let pipeline_weak = pipeline.downgrade();
let main_loop = main_loop.clone();
move || {
if let Some(pipeline) = pipeline_weak.upgrade() {
pipeline.call_async(|itself| {
let dot_graph = itself
.debug_to_dot_data(gst::DebugGraphDetails::all())
.to_string();
let mut graph = File::create("pipeline.dot").unwrap();
graph.write_all(dot_graph.as_bytes()).unwrap();
itself.set_state(gst::State::Null).unwrap();
process::exit(0);
});
}
main_loop.quit();
}
})?;