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Merge branch 'master' of https://github.com/teltek/gst-plugin-ndi

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[package]
name = "gst-plugin-ndi"
version = "1.0.0"
authors = ["Ruben Gonzalez <rubenrua@teltek.es>", "Daniel Vilar <daniel.peiteado@teltek.es>", "Sebastian Dröge <sebastian@centricular.com>"]
repository = "https://github.com/teltek/gst-plugin-ndi"
license = "LGPL"
description = "NewTek NDI Plugin"
edition = "2018"
[dependencies]
glib = "0.15"
gst = { package = "gstreamer", version = "0.18", features = ["v1_12"] }
gst-base = { package = "gstreamer-base", version = "0.18" }
gst-audio = { package = "gstreamer-audio", version = "0.18" }
gst-video = { package = "gstreamer-video", version = "0.18", features = ["v1_12"] }
byte-slice-cast = "1"
once_cell = "1.0"
byteorder = "1.0"
[build-dependencies]
gst-plugin-version-helper = "0.7"
[features]
default = ["interlaced-fields", "reference-timestamps", "sink"]
interlaced-fields = ["gst/v1_16", "gst-video/v1_16"]
reference-timestamps = ["gst/v1_14"]
sink = ["gst/v1_18", "gst-base/v1_18"]
advanced-sdk = []
[lib]
name = "gstndi"
crate-type = ["cdylib"]
path = "src/lib.rs"

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That's all there is to it!

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GStreamer NDI Plugin for Linux
====================
*Compiled and tested with NDI SDK 4.0, 4.1 and 5.0*
This is a plugin for the [GStreamer](https://gstreamer.freedesktop.org/) multimedia framework that allows GStreamer to receive a stream from a [NDI](https://www.newtek.com/ndi/) source. This plugin has been developed by [Teltek](http://teltek.es/) and was funded by the [University of the Arts London](https://www.arts.ac.uk/) and [The University of Manchester](https://www.manchester.ac.uk/).
Currently the plugin has a source element for receiving from NDI sources, a sink element to provide an NDI source and a device provider for discovering NDI sources on the network.
Some examples of how to use these elements from the command line:
```console
# Information about the elements
$ gst-inspect-1.0 ndi
$ gst-inspect-1.0 ndisrc
$ gst-inspect-1.0 ndisink
# Discover all NDI sources on the network
$ gst-device-monitor-1.0 -f Source/Network:application/x-ndi
# Audio/Video source pipeline
$ gst-launch-1.0 ndisrc ndi-name="GC-DEV2 (OBS)" ! ndisrcdemux name=demux demux.video ! queue ! videoconvert ! autovideosink demux.audio ! queue ! audioconvert ! autoaudiosink
# Audio/Video sink pipeline
$ gst-launch-1.0 videotestsrc is-live=true ! video/x-raw,format=UYVY ! ndisinkcombiner name=combiner ! ndisink ndi-name="My NDI source" audiotestsrc is-live=true ! combiner.audio
```
Feel free to contribute to this project. Some ways you can contribute are:
* Testing with more hardware and software and reporting bugs
* Doing pull requests.
Compilation of the NDI element
-------
To compile the NDI element it's necessary to install Rust, the NDI SDK and the following packages for gstreamer:
```console
$ apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
gstreamer1.0-plugins-base
```
To install the required NDI library there are two options:
1. Download NDI SDK from NDI website and move the library to the correct location.
2. Use a [deb package](https://github.com/Palakis/obs-ndi/releases/download/4.5.2/libndi3_3.5.1-1_amd64.deb) made by the community. Thanks to [NDI plugin for OBS](https://github.com/Palakis/obs-ndi).
To install Rust, you can follow their documentation: https://www.rust-lang.org/en-US/install.html
Once all requirements are met, you can build the plugin by executing the following command from the project root folder:
```
cargo build
export GST_PLUGIN_PATH=`pwd`/target/debug
gst-inspect-1.0 ndi
```
By default GStreamer 1.18 is required, to use an older version. You can build with `$ cargo build --no-default-features --features whatever_you_want_to_enable_of_the_above_features`
If all went ok, you should see info related to the NDI element. To make the plugin available without using `GST_PLUGIN_PATH` it's necessary to copy the plugin to the gstreamer plugins folder.
```console
$ cargo build --release
$ sudo install -o root -g root -m 644 target/release/libgstndi.so /usr/lib/x86_64-linux-gnu/gstreamer-1.0/
$ sudo ldconfig
$ gst-inspect-1.0 ndi
```
More info about GStreamer plugins written in Rust:
----------------------------------
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs
License
-------
This plugin is licensed under the LGPL - see the [LICENSE](LICENSE) file for details
Acknowledgments
-------
* University of the Arts London and The University of Manchester.
* Sebastian Dröge (@sdroege).

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fn main() {
gst_plugin_version_helper::info()
}

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use gst::prelude::*;
use gst::subclass::prelude::*;
use gst::{gst_error, gst_log, gst_trace};
use once_cell::sync::OnceCell;
use std::sync::atomic;
use std::sync::Mutex;
use std::thread;
use once_cell::sync::Lazy;
use crate::ndi;
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
gst::DebugCategory::new(
"ndideviceprovider",
gst::DebugColorFlags::empty(),
Some("NewTek NDI Device Provider"),
)
});
#[derive(Debug)]
pub struct DeviceProvider {
thread: Mutex<Option<thread::JoinHandle<()>>>,
current_devices: Mutex<Vec<super::Device>>,
find: Mutex<Option<ndi::FindInstance>>,
is_running: atomic::AtomicBool,
}
#[glib::object_subclass]
impl ObjectSubclass for DeviceProvider {
const NAME: &'static str = "NdiDeviceProvider";
type Type = super::DeviceProvider;
type ParentType = gst::DeviceProvider;
fn new() -> Self {
Self {
thread: Mutex::new(None),
current_devices: Mutex::new(vec![]),
find: Mutex::new(None),
is_running: atomic::AtomicBool::new(false),
}
}
}
impl ObjectImpl for DeviceProvider {}
impl GstObjectImpl for DeviceProvider {}
impl DeviceProviderImpl for DeviceProvider {
fn metadata() -> Option<&'static gst::subclass::DeviceProviderMetadata> {
static METADATA: Lazy<gst::subclass::DeviceProviderMetadata> = Lazy::new(|| {
gst::subclass::DeviceProviderMetadata::new("NewTek NDI Device Provider",
"Source/Audio/Video/Network",
"NewTek NDI Device Provider",
"Ruben Gonzalez <rubenrua@teltek.es>, Daniel Vilar <daniel.peiteado@teltek.es>, Sebastian Dröge <sebastian@centricular.com>")
});
Some(&*METADATA)
}
fn probe(&self, _device_provider: &Self::Type) -> Vec<gst::Device> {
self.current_devices
.lock()
.unwrap()
.iter()
.map(|d| d.clone().upcast())
.collect()
}
fn start(&self, device_provider: &Self::Type) -> Result<(), gst::LoggableError> {
let mut thread_guard = self.thread.lock().unwrap();
if thread_guard.is_some() {
gst_log!(CAT, obj: device_provider, "Device provider already started");
return Ok(());
}
self.is_running.store(true, atomic::Ordering::SeqCst);
let device_provider_weak = device_provider.downgrade();
let mut first = true;
*thread_guard = Some(thread::spawn(move || {
let device_provider = match device_provider_weak.upgrade() {
None => return,
Some(device_provider) => device_provider,
};
let imp = DeviceProvider::from_instance(&device_provider);
{
let mut find_guard = imp.find.lock().unwrap();
if find_guard.is_some() {
gst_log!(CAT, obj: &device_provider, "Already started");
return;
}
let find = match ndi::FindInstance::builder().build() {
None => {
gst_error!(CAT, obj: &device_provider, "Failed to create Find instance");
return;
}
Some(find) => find,
};
*find_guard = Some(find);
}
loop {
let device_provider = match device_provider_weak.upgrade() {
None => break,
Some(device_provider) => device_provider,
};
let imp = DeviceProvider::from_instance(&device_provider);
if !imp.is_running.load(atomic::Ordering::SeqCst) {
break;
}
imp.poll(&device_provider, first);
first = false;
}
}));
Ok(())
}
fn stop(&self, _device_provider: &Self::Type) {
if let Some(_thread) = self.thread.lock().unwrap().take() {
self.is_running.store(false, atomic::Ordering::SeqCst);
// Don't actually join because that might take a while
}
}
}
impl DeviceProvider {
fn poll(&self, device_provider: &super::DeviceProvider, first: bool) {
let mut find_guard = self.find.lock().unwrap();
let find = match *find_guard {
None => return,
Some(ref mut find) => find,
};
if !find.wait_for_sources(if first { 1000 } else { 5000 }) {
gst_trace!(CAT, obj: device_provider, "No new sources found");
return;
}
let sources = find.get_current_sources();
let mut sources = sources.iter().map(|s| s.to_owned()).collect::<Vec<_>>();
let mut current_devices_guard = self.current_devices.lock().unwrap();
let mut expired_devices = vec![];
let mut remaining_sources = vec![];
// First check for each device we previously knew if it's still available
for old_device in &*current_devices_guard {
let old_device_imp = Device::from_instance(old_device);
let old_source = old_device_imp.source.get().unwrap();
if !sources.contains(&*old_source) {
gst_log!(
CAT,
obj: device_provider,
"Source {:?} disappeared",
old_source
);
expired_devices.push(old_device.clone());
} else {
// Otherwise remember that we had it before already and don't have to announce it
// again. After the loop we're going to remove these all from the sources vec.
remaining_sources.push(old_source.to_owned());
}
}
for remaining_source in remaining_sources {
sources.retain(|s| s != &remaining_source);
}
// Remove all expired devices from the list of cached devices
current_devices_guard.retain(|d| !expired_devices.contains(d));
// And also notify the device provider of them having disappeared
for old_device in expired_devices {
device_provider.device_remove(&old_device);
}
// Now go through all new devices and announce them
for source in sources {
gst_log!(CAT, obj: device_provider, "Source {:?} appeared", source);
let device = super::Device::new(&source);
device_provider.device_add(&device);
current_devices_guard.push(device);
}
}
}
#[derive(Debug)]
pub struct Device {
source: OnceCell<ndi::Source<'static>>,
}
#[glib::object_subclass]
impl ObjectSubclass for Device {
const NAME: &'static str = "NdiDevice";
type Type = super::Device;
type ParentType = gst::Device;
fn new() -> Self {
Self {
source: OnceCell::new(),
}
}
}
impl ObjectImpl for Device {}
impl GstObjectImpl for Device {}
impl DeviceImpl for Device {
fn create_element(
&self,
_device: &Self::Type,
name: Option<&str>,
) -> Result<gst::Element, gst::LoggableError> {
let source_info = self.source.get().unwrap();
let element = glib::Object::with_type(
crate::ndisrc::NdiSrc::static_type(),
&[
("name", &name),
("ndi-name", &source_info.ndi_name()),
("url-address", &source_info.url_address()),
],
)
.unwrap()
.dynamic_cast::<gst::Element>()
.unwrap();
Ok(element)
}
}
impl super::Device {
fn new(source: &ndi::Source<'_>) -> super::Device {
let display_name = source.ndi_name();
let device_class = "Source/Audio/Video/Network";
let element_class =
glib::Class::<gst::Element>::from_type(crate::ndisrc::NdiSrc::static_type()).unwrap();
let templ = element_class.pad_template("src").unwrap();
let caps = templ.caps();
// Put the url-address into the extra properties
let extra_properties = gst::Structure::builder("properties")
.field("ndi-name", &source.ndi_name())
.field("url-address", &source.url_address())
.build();
let device = glib::Object::new::<super::Device>(&[
("caps", &caps),
("display-name", &display_name),
("device-class", &device_class),
("properties", &extra_properties),
])
.unwrap();
let device_impl = Device::from_instance(&device);
device_impl.source.set(source.to_owned()).unwrap();
device
}
}

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use glib::prelude::*;
mod imp;
glib::wrapper! {
pub struct DeviceProvider(ObjectSubclass<imp::DeviceProvider>) @extends gst::DeviceProvider, gst::Object;
}
unsafe impl Send for DeviceProvider {}
unsafe impl Sync for DeviceProvider {}
glib::wrapper! {
pub struct Device(ObjectSubclass<imp::Device>) @extends gst::Device, gst::Object;
}
unsafe impl Send for Device {}
unsafe impl Sync for Device {}
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
gst::DeviceProvider::register(
Some(plugin),
"ndideviceprovider",
gst::Rank::Primary,
DeviceProvider::static_type(),
)
}

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mod device_provider;
pub mod ndi;
#[cfg(feature = "sink")]
mod ndisink;
#[cfg(feature = "sink")]
mod ndisinkcombiner;
#[cfg(feature = "sink")]
pub mod ndisinkmeta;
mod ndisrc;
mod ndisrcdemux;
pub mod ndisrcmeta;
pub mod ndisys;
pub mod receiver;
use crate::ndi::*;
use crate::ndisys::*;
use crate::receiver::*;
use std::time;
use once_cell::sync::Lazy;
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Clone, Copy, glib::Enum)]
#[repr(u32)]
#[enum_type(name = "GstNdiTimestampMode")]
pub enum TimestampMode {
#[enum_value(name = "Receive Time / Timecode", nick = "receive-time-vs-timecode")]
ReceiveTimeTimecode = 0,
#[enum_value(name = "Receive Time / Timestamp", nick = "receive-time-vs-timestamp")]
ReceiveTimeTimestamp = 1,
#[enum_value(name = "NDI Timecode", nick = "timecode")]
Timecode = 2,
#[enum_value(name = "NDI Timestamp", nick = "timestamp")]
Timestamp = 3,
#[enum_value(name = "Receive Time", nick = "receive-time")]
ReceiveTime = 4,
}
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Clone, Copy, glib::Enum)]
#[repr(u32)]
#[enum_type(name = "GstNdiRecvColorFormat")]
pub enum RecvColorFormat {
#[enum_value(name = "BGRX or BGRA", nick = "bgrx-bgra")]
BgrxBgra = 0,
#[enum_value(name = "UYVY or BGRA", nick = "uyvy-bgra")]
UyvyBgra = 1,
#[enum_value(name = "RGBX or RGBA", nick = "rgbx-rgba")]
RgbxRgba = 2,
#[enum_value(name = "UYVY or RGBA", nick = "uyvy-rgba")]
UyvyRgba = 3,
#[enum_value(name = "Fastest", nick = "fastest")]
Fastest = 4,
#[enum_value(name = "Best", nick = "best")]
Best = 5,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v1", nick = "compressed-v1")]
CompressedV1 = 6,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v2", nick = "compressed-v2")]
CompressedV2 = 7,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v3", nick = "compressed-v3")]
CompressedV3 = 8,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v3 with audio", nick = "compressed-v3-with-audio")]
CompressedV3WithAudio = 9,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v4", nick = "compressed-v4")]
CompressedV4 = 10,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v4 with audio", nick = "compressed-v4-with-audio")]
CompressedV4WithAudio = 11,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v5", nick = "compressed-v5")]
CompressedV5 = 12,
#[cfg(feature = "advanced-sdk")]
#[enum_value(name = "Compressed v5 with audio", nick = "compressed-v5-with-audio")]
CompressedV5WithAudio = 13,
}
impl From<RecvColorFormat> for NDIlib_recv_color_format_e {
fn from(v: RecvColorFormat) -> Self {
match v {
RecvColorFormat::BgrxBgra => NDIlib_recv_color_format_BGRX_BGRA,
RecvColorFormat::UyvyBgra => NDIlib_recv_color_format_UYVY_BGRA,
RecvColorFormat::RgbxRgba => NDIlib_recv_color_format_RGBX_RGBA,
RecvColorFormat::UyvyRgba => NDIlib_recv_color_format_UYVY_RGBA,
RecvColorFormat::Fastest => NDIlib_recv_color_format_fastest,
RecvColorFormat::Best => NDIlib_recv_color_format_best,
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV1 => NDIlib_recv_color_format_ex_compressed,
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV2 => NDIlib_recv_color_format_ex_compressed_v2,
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV3 => NDIlib_recv_color_format_ex_compressed_v3,
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV3WithAudio => {
NDIlib_recv_color_format_ex_compressed_v3_with_audio
}
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV4 => NDIlib_recv_color_format_ex_compressed_v4,
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV4WithAudio => {
NDIlib_recv_color_format_ex_compressed_v4_with_audio
}
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV5 => NDIlib_recv_color_format_ex_compressed_v5,
#[cfg(feature = "advanced-sdk")]
RecvColorFormat::CompressedV5WithAudio => {
NDIlib_recv_color_format_ex_compressed_v5_with_audio
}
}
}
}
fn plugin_init(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
if !ndi::initialize() {
return Err(glib::bool_error!("Cannot initialize NDI"));
}
device_provider::register(plugin)?;
ndisrc::register(plugin)?;
ndisrcdemux::register(plugin)?;
#[cfg(feature = "sink")]
{
ndisinkcombiner::register(plugin)?;
ndisink::register(plugin)?;
}
Ok(())
}
static DEFAULT_RECEIVER_NDI_NAME: Lazy<String> = Lazy::new(|| {
format!(
"GStreamer NDI Source {}-{}",
env!("CARGO_PKG_VERSION"),
env!("COMMIT_ID")
)
});
#[cfg(feature = "reference-timestamps")]
static TIMECODE_CAPS: Lazy<gst::Caps> =
Lazy::new(|| gst::Caps::new_simple("timestamp/x-ndi-timecode", &[]));
#[cfg(feature = "reference-timestamps")]
static TIMESTAMP_CAPS: Lazy<gst::Caps> =
Lazy::new(|| gst::Caps::new_simple("timestamp/x-ndi-timestamp", &[]));
gst::plugin_define!(
ndi,
env!("CARGO_PKG_DESCRIPTION"),
plugin_init,
concat!(env!("CARGO_PKG_VERSION"), "-", env!("COMMIT_ID")),
"LGPL",
env!("CARGO_PKG_NAME"),
env!("CARGO_PKG_NAME"),
env!("CARGO_PKG_REPOSITORY"),
env!("BUILD_REL_DATE")
);

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363
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use glib::subclass::prelude::*;
use gst::prelude::*;
use gst::subclass::prelude::*;
use gst::{gst_debug, gst_error, gst_info, gst_trace};
use gst_base::prelude::*;
use gst_base::subclass::prelude::*;
use std::sync::Mutex;
use once_cell::sync::Lazy;
use crate::ndi::SendInstance;
static DEFAULT_SENDER_NDI_NAME: Lazy<String> = Lazy::new(|| {
format!(
"GStreamer NDI Sink {}-{}",
env!("CARGO_PKG_VERSION"),
env!("COMMIT_ID")
)
});
#[derive(Debug)]
struct Settings {
ndi_name: String,
}
impl Default for Settings {
fn default() -> Self {
Settings {
ndi_name: DEFAULT_SENDER_NDI_NAME.clone(),
}
}
}
struct State {
send: SendInstance,
video_info: Option<gst_video::VideoInfo>,
audio_info: Option<gst_audio::AudioInfo>,
}
pub struct NdiSink {
settings: Mutex<Settings>,
state: Mutex<Option<State>>,
}
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
gst::DebugCategory::new("ndisink", gst::DebugColorFlags::empty(), Some("NDI Sink"))
});
#[glib::object_subclass]
impl ObjectSubclass for NdiSink {
const NAME: &'static str = "NdiSink";
type Type = super::NdiSink;
type ParentType = gst_base::BaseSink;
fn new() -> Self {
Self {
settings: Mutex::new(Default::default()),
state: Mutex::new(Default::default()),
}
}
}
impl ObjectImpl for NdiSink {
fn properties() -> &'static [glib::ParamSpec] {
static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
vec![glib::ParamSpecString::new(
"ndi-name",
"NDI Name",
"NDI Name to use",
Some(DEFAULT_SENDER_NDI_NAME.as_ref()),
glib::ParamFlags::READWRITE,
)]
});
PROPERTIES.as_ref()
}
fn set_property(
&self,
_obj: &Self::Type,
_id: usize,
value: &glib::Value,
pspec: &glib::ParamSpec,
) {
match pspec.name() {
"ndi-name" => {
let mut settings = self.settings.lock().unwrap();
settings.ndi_name = value
.get::<String>()
.unwrap_or_else(|_| DEFAULT_SENDER_NDI_NAME.clone());
}
_ => unimplemented!(),
};
}
fn property(&self, _obj: &Self::Type, _id: usize, pspec: &glib::ParamSpec) -> glib::Value {
match pspec.name() {
"ndi-name" => {
let settings = self.settings.lock().unwrap();
settings.ndi_name.to_value()
}
_ => unimplemented!(),
}
}
}
impl GstObjectImpl for NdiSink {}
impl ElementImpl for NdiSink {
fn metadata() -> Option<&'static gst::subclass::ElementMetadata> {
static ELEMENT_METADATA: Lazy<gst::subclass::ElementMetadata> = Lazy::new(|| {
gst::subclass::ElementMetadata::new(
"NDI Sink",
"Sink/Audio/Video",
"Render as an NDI stream",
"Sebastian Dröge <sebastian@centricular.com>",
)
});
Some(&*ELEMENT_METADATA)
}
fn pad_templates() -> &'static [gst::PadTemplate] {
static PAD_TEMPLATES: Lazy<Vec<gst::PadTemplate>> = Lazy::new(|| {
let caps = gst::Caps::builder_full()
.structure(
gst::Structure::builder("video/x-raw")
.field(
"format",
&gst::List::new(&[
&gst_video::VideoFormat::Uyvy.to_str(),
&gst_video::VideoFormat::I420.to_str(),
&gst_video::VideoFormat::Nv12.to_str(),
&gst_video::VideoFormat::Nv21.to_str(),
&gst_video::VideoFormat::Yv12.to_str(),
&gst_video::VideoFormat::Bgra.to_str(),
&gst_video::VideoFormat::Bgrx.to_str(),
&gst_video::VideoFormat::Rgba.to_str(),
&gst_video::VideoFormat::Rgbx.to_str(),
]),
)
.field("width", &gst::IntRange::<i32>::new(1, std::i32::MAX))
.field("height", &gst::IntRange::<i32>::new(1, std::i32::MAX))
.field(
"framerate",
&gst::FractionRange::new(
gst::Fraction::new(0, 1),
gst::Fraction::new(std::i32::MAX, 1),
),
)
.build(),
)
.structure(
gst::Structure::builder("audio/x-raw")
.field("format", &gst_audio::AUDIO_FORMAT_F32.to_str())
.field("rate", &gst::IntRange::<i32>::new(1, i32::MAX))
.field("channels", &gst::IntRange::<i32>::new(1, i32::MAX))
.field("layout", &"interleaved")
.build(),
)
.build();
let sink_pad_template = gst::PadTemplate::new(
"sink",
gst::PadDirection::Sink,
gst::PadPresence::Always,
&caps,
)
.unwrap();
vec![sink_pad_template]
});
PAD_TEMPLATES.as_ref()
}
}
impl BaseSinkImpl for NdiSink {
fn start(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
let mut state_storage = self.state.lock().unwrap();
let settings = self.settings.lock().unwrap();
let send = SendInstance::builder(&settings.ndi_name)
.build()
.ok_or_else(|| {
gst::error_msg!(
gst::ResourceError::OpenWrite,
["Could not create send instance"]
)
})?;
let state = State {
send,
video_info: None,
audio_info: None,
};
*state_storage = Some(state);
gst_info!(CAT, obj: element, "Started");
Ok(())
}
fn stop(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
let mut state_storage = self.state.lock().unwrap();
*state_storage = None;
gst_info!(CAT, obj: element, "Stopped");
Ok(())
}
fn unlock(&self, _element: &Self::Type) -> Result<(), gst::ErrorMessage> {
Ok(())
}
fn unlock_stop(&self, _element: &Self::Type) -> Result<(), gst::ErrorMessage> {
Ok(())
}
fn set_caps(&self, element: &Self::Type, caps: &gst::Caps) -> Result<(), gst::LoggableError> {
gst_debug!(CAT, obj: element, "Setting caps {}", caps);
let mut state_storage = self.state.lock().unwrap();
let state = match &mut *state_storage {
None => return Err(gst::loggable_error!(CAT, "Sink not started yet")),
Some(ref mut state) => state,
};
let s = caps.structure(0).unwrap();
if s.name() == "video/x-raw" {
let info = gst_video::VideoInfo::from_caps(caps)
.map_err(|_| gst::loggable_error!(CAT, "Couldn't parse caps {}", caps))?;
state.video_info = Some(info);
state.audio_info = None;
} else {
let info = gst_audio::AudioInfo::from_caps(caps)
.map_err(|_| gst::loggable_error!(CAT, "Couldn't parse caps {}", caps))?;
state.audio_info = Some(info);
state.video_info = None;
}
Ok(())
}
fn render(
&self,
element: &Self::Type,
buffer: &gst::Buffer,
) -> Result<gst::FlowSuccess, gst::FlowError> {
let mut state_storage = self.state.lock().unwrap();
let state = match &mut *state_storage {
None => return Err(gst::FlowError::Error),
Some(ref mut state) => state,
};
if let Some(ref info) = state.video_info {
if let Some(audio_meta) = buffer.meta::<crate::ndisinkmeta::NdiSinkAudioMeta>() {
for (buffer, info, timecode) in audio_meta.buffers() {
let frame = crate::ndi::AudioFrame::try_from_buffer(info, buffer, *timecode)
.map_err(|_| {
gst_error!(CAT, obj: element, "Unsupported audio frame");
gst::FlowError::NotNegotiated
})?;
gst_trace!(
CAT,
obj: element,
"Sending audio buffer {:?} with timecode {} and format {:?}",
buffer,
if *timecode < 0 {
gst::ClockTime::NONE.display()
} else {
Some(gst::ClockTime::from_nseconds(*timecode as u64 * 100)).display()
},
info,
);
state.send.send_audio(&frame);
}
}
// Skip empty/gap buffers from ndisinkcombiner
if buffer.size() != 0 {
let timecode = element
.segment()
.downcast::<gst::ClockTime>()
.ok()
.and_then(|segment| {
segment
.to_running_time(buffer.pts())
.zip(element.base_time())
})
.and_then(|(running_time, base_time)| running_time.checked_add(base_time))
.map(|time| (time.nseconds() / 100) as i64)
.unwrap_or(crate::ndisys::NDIlib_send_timecode_synthesize);
let frame = gst_video::VideoFrameRef::from_buffer_ref_readable(buffer, info)
.map_err(|_| {
gst_error!(CAT, obj: element, "Failed to map buffer");
gst::FlowError::Error
})?;
let frame = crate::ndi::VideoFrame::try_from_video_frame(&frame, timecode)
.map_err(|_| {
gst_error!(CAT, obj: element, "Unsupported video frame");
gst::FlowError::NotNegotiated
})?;
gst_trace!(
CAT,
obj: element,
"Sending video buffer {:?} with timecode {} and format {:?}",
buffer,
if timecode < 0 {
gst::ClockTime::NONE.display()
} else {
Some(gst::ClockTime::from_nseconds(timecode as u64 * 100)).display()
},
info
);
state.send.send_video(&frame);
}
} else if let Some(ref info) = state.audio_info {
let timecode = element
.segment()
.downcast::<gst::ClockTime>()
.ok()
.and_then(|segment| {
segment
.to_running_time(buffer.pts())
.zip(element.base_time())
})
.and_then(|(running_time, base_time)| running_time.checked_add(base_time))
.map(|time| (time.nseconds() / 100) as i64)
.unwrap_or(crate::ndisys::NDIlib_send_timecode_synthesize);
let frame =
crate::ndi::AudioFrame::try_from_buffer(info, buffer, timecode).map_err(|_| {
gst_error!(CAT, obj: element, "Unsupported audio frame");
gst::FlowError::NotNegotiated
})?;
gst_trace!(
CAT,
obj: element,
"Sending audio buffer {:?} with timecode {} and format {:?}",
buffer,
if timecode < 0 {
gst::ClockTime::NONE.display()
} else {
Some(gst::ClockTime::from_nseconds(timecode as u64 * 100)).display()
},
info,
);
state.send.send_audio(&frame);
} else {
return Err(gst::FlowError::Error);
}
Ok(gst::FlowSuccess::Ok)
}
}

19
net/ndi/src/ndisink/mod.rs Normal file
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use glib::prelude::*;
mod imp;
glib::wrapper! {
pub struct NdiSink(ObjectSubclass<imp::NdiSink>) @extends gst_base::BaseSink, gst::Element, gst::Object;
}
unsafe impl Send for NdiSink {}
unsafe impl Sync for NdiSink {}
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
gst::Element::register(
Some(plugin),
"ndisink",
gst::Rank::None,
NdiSink::static_type(),
)
}

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use glib::prelude::*;
use glib::subclass::prelude::*;
use gst::prelude::*;
use gst::subclass::prelude::*;
use gst::{gst_debug, gst_error, gst_trace, gst_warning};
use gst_base::prelude::*;
use gst_base::subclass::prelude::*;
use once_cell::sync::Lazy;
use std::mem;
use std::sync::Mutex;
static CAT: once_cell::sync::Lazy<gst::DebugCategory> = once_cell::sync::Lazy::new(|| {
gst::DebugCategory::new(
"ndisinkcombiner",
gst::DebugColorFlags::empty(),
Some("NDI sink audio/video combiner"),
)
});
struct State {
// Note that this applies to the currently pending buffer on the pad and *not*
// to the current_video_buffer below!
video_info: Option<gst_video::VideoInfo>,
audio_info: Option<gst_audio::AudioInfo>,
current_video_buffer: Option<(gst::Buffer, gst::ClockTime)>,
current_audio_buffers: Vec<(gst::Buffer, gst_audio::AudioInfo, i64)>,
}
pub struct NdiSinkCombiner {
video_pad: gst_base::AggregatorPad,
audio_pad: Mutex<Option<gst_base::AggregatorPad>>,
state: Mutex<Option<State>>,
}
#[glib::object_subclass]
impl ObjectSubclass for NdiSinkCombiner {
const NAME: &'static str = "NdiSinkCombiner";
type Type = super::NdiSinkCombiner;
type ParentType = gst_base::Aggregator;
fn with_class(klass: &Self::Class) -> Self {
let templ = klass.pad_template("video").unwrap();
let video_pad =
gst::PadBuilder::<gst_base::AggregatorPad>::from_template(&templ, Some("video"))
.build();
Self {
video_pad,
audio_pad: Mutex::new(None),
state: Mutex::new(None),
}
}
}
impl ObjectImpl for NdiSinkCombiner {
fn constructed(&self, obj: &Self::Type) {
obj.add_pad(&self.video_pad).unwrap();
self.parent_constructed(obj);
}
}
impl GstObjectImpl for NdiSinkCombiner {}
impl ElementImpl for NdiSinkCombiner {
fn metadata() -> Option<&'static gst::subclass::ElementMetadata> {
static ELEMENT_METADATA: Lazy<gst::subclass::ElementMetadata> = Lazy::new(|| {
gst::subclass::ElementMetadata::new(
"NDI Sink Combiner",
"Combiner/Audio/Video",
"NDI sink audio/video combiner",
"Sebastian Dröge <sebastian@centricular.com>",
)
});
Some(&*ELEMENT_METADATA)
}
fn pad_templates() -> &'static [gst::PadTemplate] {
static PAD_TEMPLATES: Lazy<Vec<gst::PadTemplate>> = Lazy::new(|| {
let caps = gst::Caps::builder("video/x-raw")
.field(
"format",
&gst::List::new(&[
&gst_video::VideoFormat::Uyvy.to_str(),
&gst_video::VideoFormat::I420.to_str(),
&gst_video::VideoFormat::Nv12.to_str(),
&gst_video::VideoFormat::Nv21.to_str(),
&gst_video::VideoFormat::Yv12.to_str(),
&gst_video::VideoFormat::Bgra.to_str(),
&gst_video::VideoFormat::Bgrx.to_str(),
&gst_video::VideoFormat::Rgba.to_str(),
&gst_video::VideoFormat::Rgbx.to_str(),
]),
)
.field("width", &gst::IntRange::<i32>::new(1, i32::MAX))
.field("height", &gst::IntRange::<i32>::new(1, i32::MAX))
.field(
"framerate",
&gst::FractionRange::new(
gst::Fraction::new(1, i32::MAX),
gst::Fraction::new(i32::MAX, 1),
),
)
.build();
let src_pad_template = gst::PadTemplate::with_gtype(
"src",
gst::PadDirection::Src,
gst::PadPresence::Always,
&caps,
gst_base::AggregatorPad::static_type(),
)
.unwrap();
let video_sink_pad_template = gst::PadTemplate::with_gtype(
"video",
gst::PadDirection::Sink,
gst::PadPresence::Always,
&caps,
gst_base::AggregatorPad::static_type(),
)
.unwrap();
let caps = gst::Caps::builder("audio/x-raw")
.field("format", &gst_audio::AUDIO_FORMAT_F32.to_str())
.field("rate", &gst::IntRange::<i32>::new(1, i32::MAX))
.field("channels", &gst::IntRange::<i32>::new(1, i32::MAX))
.field("layout", &"interleaved")
.build();
let audio_sink_pad_template = gst::PadTemplate::with_gtype(
"audio",
gst::PadDirection::Sink,
gst::PadPresence::Request,
&caps,
gst_base::AggregatorPad::static_type(),
)
.unwrap();
vec![
src_pad_template,
video_sink_pad_template,
audio_sink_pad_template,
]
});
PAD_TEMPLATES.as_ref()
}
fn release_pad(&self, element: &Self::Type, pad: &gst::Pad) {
let mut audio_pad_storage = self.audio_pad.lock().unwrap();
if audio_pad_storage.as_ref().map(|p| p.upcast_ref()) == Some(pad) {
gst_debug!(CAT, obj: element, "Release audio pad");
self.parent_release_pad(element, pad);
*audio_pad_storage = None;
}
}
}
impl AggregatorImpl for NdiSinkCombiner {
fn create_new_pad(
&self,
agg: &Self::Type,
templ: &gst::PadTemplate,
_req_name: Option<&str>,
_caps: Option<&gst::Caps>,
) -> Option<gst_base::AggregatorPad> {
let mut audio_pad_storage = self.audio_pad.lock().unwrap();
if audio_pad_storage.is_some() {
gst_error!(CAT, obj: agg, "Audio pad already requested");
return None;
}
let sink_templ = agg.pad_template("audio").unwrap();
if templ != &sink_templ {
gst_error!(CAT, obj: agg, "Wrong pad template");
return None;
}
let pad =
gst::PadBuilder::<gst_base::AggregatorPad>::from_template(templ, Some("audio")).build();
*audio_pad_storage = Some(pad.clone());
gst_debug!(CAT, obj: agg, "Requested audio pad");
Some(pad)
}
fn start(&self, agg: &Self::Type) -> Result<(), gst::ErrorMessage> {
let mut state_storage = self.state.lock().unwrap();
*state_storage = Some(State {
audio_info: None,
video_info: None,
current_video_buffer: None,
current_audio_buffers: Vec::new(),
});
gst_debug!(CAT, obj: agg, "Started");
Ok(())
}
fn stop(&self, agg: &Self::Type) -> Result<(), gst::ErrorMessage> {
// Drop our state now
let _ = self.state.lock().unwrap().take();
gst_debug!(CAT, obj: agg, "Stopped");
Ok(())
}
fn next_time(&self, _agg: &Self::Type) -> Option<gst::ClockTime> {
// FIXME: What to do here? We don't really know when the next buffer is expected
gst::ClockTime::NONE
}
fn clip(
&self,
agg: &Self::Type,
agg_pad: &gst_base::AggregatorPad,
mut buffer: gst::Buffer,
) -> Option<gst::Buffer> {
let segment = match agg_pad.segment().downcast::<gst::ClockTime>() {
Ok(segment) => segment,
Err(_) => {
gst_error!(CAT, obj: agg, "Only TIME segments supported");
return Some(buffer);
}
};
let pts = buffer.pts();
if pts.is_none() {
gst_error!(CAT, obj: agg, "Only buffers with PTS supported");
return Some(buffer);
}
let duration = buffer.duration();
gst_trace!(
CAT,
obj: agg_pad,
"Clipping buffer {:?} with PTS {} and duration {}",
buffer,
pts.display(),
duration.display(),
);
let state_storage = self.state.lock().unwrap();
let state = match &*state_storage {
Some(ref state) => state,
None => return None,
};
let duration = if duration.is_some() {
duration
} else if let Some(ref audio_info) = state.audio_info {
gst::ClockTime::SECOND.mul_div_floor(
buffer.size() as u64,
audio_info.rate() as u64 * audio_info.bpf() as u64,
)
} else if let Some(ref video_info) = state.video_info {
if video_info.fps().numer() > 0 {
gst::ClockTime::SECOND.mul_div_floor(
video_info.fps().denom() as u64,
video_info.fps().numer() as u64,
)
} else {
gst::ClockTime::NONE
}
} else {
unreachable!()
};
gst_debug!(
CAT,
obj: agg_pad,
"Clipping buffer {:?} with PTS {} and duration {}",
buffer,
pts.display(),
duration.display(),
);
if agg_pad == &self.video_pad {
let end_pts = pts
.zip(duration)
.and_then(|(pts, duration)| pts.checked_add(duration));
segment.clip(pts, end_pts).map(|(start, stop)| {
{
let buffer = buffer.make_mut();
buffer.set_pts(start);
buffer.set_duration(
stop.zip(start)
.and_then(|(stop, start)| stop.checked_sub(start)),
);
}
buffer
})
} else if let Some(ref audio_info) = state.audio_info {
gst_audio::audio_buffer_clip(
buffer,
segment.upcast_ref(),
audio_info.rate(),
audio_info.bpf(),
)
} else {
// Can't really have audio buffers without caps
unreachable!();
}
}
fn aggregate(
&self,
agg: &Self::Type,
timeout: bool,
) -> Result<gst::FlowSuccess, gst::FlowError> {
// FIXME: Can't really happen because we always return NONE from get_next_time() but that
// should be improved!
assert!(!timeout);
// Because peek_buffer() can call into clip() and that would take the state lock again,
// first try getting buffers from both pads here
let video_buffer_and_segment = match self.video_pad.peek_buffer() {
Some(video_buffer) => {
let video_segment = self.video_pad.segment();
let video_segment = match video_segment.downcast::<gst::ClockTime>() {
Ok(video_segment) => video_segment,
Err(video_segment) => {
gst_error!(
CAT,
obj: agg,
"Video segment of wrong format {:?}",
video_segment.format()
);
return Err(gst::FlowError::Error);
}
};
Some((video_buffer, video_segment))
}
None if !self.video_pad.is_eos() => {
gst_trace!(CAT, obj: agg, "Waiting for video buffer");
return Err(gst_base::AGGREGATOR_FLOW_NEED_DATA);
}
None => None,
};
let audio_buffer_segment_and_pad;
if let Some(audio_pad) = self.audio_pad.lock().unwrap().clone() {
audio_buffer_segment_and_pad = match audio_pad.peek_buffer() {
Some(audio_buffer) if audio_buffer.size() == 0 => {
// Skip empty/gap audio buffer
audio_pad.drop_buffer();
gst_trace!(CAT, obj: agg, "Empty audio buffer, waiting for next");
return Err(gst_base::AGGREGATOR_FLOW_NEED_DATA);
}
Some(audio_buffer) => {
let audio_segment = audio_pad.segment();
let audio_segment = match audio_segment.downcast::<gst::ClockTime>() {
Ok(audio_segment) => audio_segment,
Err(audio_segment) => {
gst_error!(
CAT,
obj: agg,
"Audio segment of wrong format {:?}",
audio_segment.format()
);
return Err(gst::FlowError::Error);
}
};
Some((audio_buffer, audio_segment, audio_pad))
}
None if !audio_pad.is_eos() => {
gst_trace!(CAT, obj: agg, "Waiting for audio buffer");
return Err(gst_base::AGGREGATOR_FLOW_NEED_DATA);
}
None => None,
};
} else {
audio_buffer_segment_and_pad = None;
}
let mut state_storage = self.state.lock().unwrap();
let state = match &mut *state_storage {
Some(ref mut state) => state,
None => return Err(gst::FlowError::Flushing),
};
let (mut current_video_buffer, current_video_running_time_end, next_video_buffer) =
if let Some((video_buffer, video_segment)) = video_buffer_and_segment {
let video_running_time = video_segment.to_running_time(video_buffer.pts()).unwrap();
match state.current_video_buffer {
None => {
gst_trace!(CAT, obj: agg, "First video buffer, waiting for second");
state.current_video_buffer = Some((video_buffer, video_running_time));
drop(state_storage);
self.video_pad.drop_buffer();
return Err(gst_base::AGGREGATOR_FLOW_NEED_DATA);
}
Some((ref buffer, _)) => (
buffer.clone(),
Some(video_running_time),
Some((video_buffer, video_running_time)),
),
}
} else {
match (&state.current_video_buffer, &audio_buffer_segment_and_pad) {
(None, None) => {
gst_trace!(
CAT,
obj: agg,
"All pads are EOS and no buffers are queued, finishing"
);
return Err(gst::FlowError::Eos);
}
(None, Some((ref audio_buffer, ref audio_segment, _))) => {
// Create an empty dummy buffer for attaching the audio. This is going to
// be dropped by the sink later.
let audio_running_time =
audio_segment.to_running_time(audio_buffer.pts()).unwrap();
let video_segment = self.video_pad.segment();
let video_segment = match video_segment.downcast::<gst::ClockTime>() {
Ok(video_segment) => video_segment,
Err(video_segment) => {
gst_error!(
CAT,
obj: agg,
"Video segment of wrong format {:?}",
video_segment.format()
);
return Err(gst::FlowError::Error);
}
};
let video_pts =
video_segment.position_from_running_time(audio_running_time);
if video_pts.is_none() {
gst_warning!(CAT, obj: agg, "Can't output more audio after video EOS");
return Err(gst::FlowError::Eos);
}
let mut buffer = gst::Buffer::new();
{
let buffer = buffer.get_mut().unwrap();
buffer.set_pts(video_pts);
}
(buffer, gst::ClockTime::NONE, None)
}
(Some((ref buffer, _)), _) => (buffer.clone(), gst::ClockTime::NONE, None),
}
};
if let Some((audio_buffer, audio_segment, audio_pad)) = audio_buffer_segment_and_pad {
let audio_info = match state.audio_info {
Some(ref audio_info) => audio_info,
None => {
gst_error!(CAT, obj: agg, "Have no audio caps");
return Err(gst::FlowError::NotNegotiated);
}
};
let audio_running_time = audio_segment.to_running_time(audio_buffer.pts());
let duration = gst::ClockTime::SECOND.mul_div_floor(
audio_buffer.size() as u64 / audio_info.bpf() as u64,
audio_info.rate() as u64,
);
let audio_running_time_end = audio_running_time
.zip(duration)
.and_then(|(running_time, duration)| running_time.checked_add(duration));
if audio_running_time_end
.zip(current_video_running_time_end)
.map(|(audio, video)| audio <= video)
.unwrap_or(true)
{
let timecode = agg
.base_time()
.zip(audio_running_time)
.map(|(base_time, audio_running_time)| {
((base_time.nseconds() + audio_running_time.nseconds()) / 100) as i64
})
.unwrap_or(crate::ndisys::NDIlib_send_timecode_synthesize);
gst_trace!(
CAT,
obj: agg,
"Including audio buffer {:?} with timecode {}: {} <= {}",
audio_buffer,
timecode,
audio_running_time_end.display(),
current_video_running_time_end.display(),
);
state
.current_audio_buffers
.push((audio_buffer, audio_info.clone(), timecode));
audio_pad.drop_buffer();
// If there is still video data, wait for the next audio buffer or EOS,
// otherwise just output the dummy video buffer directly.
if current_video_running_time_end.is_some() {
return Err(gst_base::AGGREGATOR_FLOW_NEED_DATA);
}
}
// Otherwise finish this video buffer with all audio that has accumulated so
// far
}
let audio_buffers = mem::take(&mut state.current_audio_buffers);
if !audio_buffers.is_empty() {
let current_video_buffer = current_video_buffer.make_mut();
crate::ndisinkmeta::NdiSinkAudioMeta::add(current_video_buffer, audio_buffers);
}
if let Some((video_buffer, video_running_time)) = next_video_buffer {
state.current_video_buffer = Some((video_buffer, video_running_time));
drop(state_storage);
self.video_pad.drop_buffer();
} else {
state.current_video_buffer = None;
drop(state_storage);
}
gst_trace!(
CAT,
obj: agg,
"Finishing video buffer {:?}",
current_video_buffer
);
agg.finish_buffer(current_video_buffer)
}
fn sink_event(
&self,
agg: &Self::Type,
pad: &gst_base::AggregatorPad,
event: gst::Event,
) -> bool {
use gst::EventView;
match event.view() {
EventView::Caps(caps) => {
let caps = caps.caps_owned();
let mut state_storage = self.state.lock().unwrap();
let state = match &mut *state_storage {
Some(ref mut state) => state,
None => return false,
};
if pad == &self.video_pad {
let info = match gst_video::VideoInfo::from_caps(&caps) {
Ok(info) => info,
Err(_) => {
gst_error!(CAT, obj: pad, "Failed to parse caps {:?}", caps);
return false;
}
};
// 2 frames latency because we queue 1 frame and wait until audio
// up to the end of that frame has arrived.
let latency = if info.fps().numer() > 0 {
gst::ClockTime::SECOND
.mul_div_floor(2 * info.fps().denom() as u64, info.fps().numer() as u64)
.unwrap_or(80 * gst::ClockTime::MSECOND)
} else {
// let's assume 25fps and 2 frames latency
80 * gst::ClockTime::MSECOND
};
state.video_info = Some(info);
drop(state_storage);
agg.set_latency(latency, gst::ClockTime::NONE);
// The video caps are passed through as the audio is included only in a meta
agg.set_src_caps(&caps);
} else {
let info = match gst_audio::AudioInfo::from_caps(&caps) {
Ok(info) => info,
Err(_) => {
gst_error!(CAT, obj: pad, "Failed to parse caps {:?}", caps);
return false;
}
};
state.audio_info = Some(info);
}
}
// The video segment is passed through as-is and the video timestamps are preserved
EventView::Segment(segment) if pad == &self.video_pad => {
let segment = segment.segment();
gst_debug!(CAT, obj: agg, "Updating segment {:?}", segment);
agg.update_segment(segment);
}
_ => (),
}
self.parent_sink_event(agg, pad, event)
}
fn sink_query(
&self,
agg: &Self::Type,
pad: &gst_base::AggregatorPad,
query: &mut gst::QueryRef,
) -> bool {
use gst::QueryView;
match query.view_mut() {
QueryView::Caps(_) if pad == &self.video_pad => {
// Directly forward caps queries
let srcpad = agg.static_pad("src").unwrap();
return srcpad.peer_query(query);
}
_ => (),
}
self.parent_sink_query(agg, pad, query)
}
fn negotiate(&self, _agg: &Self::Type) -> bool {
// No negotiation needed as the video caps are just passed through
true
}
}

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net/ndi/src/ndisinkcombiner/mod.rs Normal file
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use glib::prelude::*;
mod imp;
glib::wrapper! {
pub struct NdiSinkCombiner(ObjectSubclass<imp::NdiSinkCombiner>) @extends gst_base::Aggregator, gst::Element, gst::Object;
}
unsafe impl Send for NdiSinkCombiner {}
unsafe impl Sync for NdiSinkCombiner {}
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
gst::Element::register(
Some(plugin),
"ndisinkcombiner",
gst::Rank::None,
NdiSinkCombiner::static_type(),
)
}

142
net/ndi/src/ndisinkmeta.rs Normal file
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use gst::prelude::*;
use std::fmt;
use std::mem;
#[repr(transparent)]
pub struct NdiSinkAudioMeta(imp::NdiSinkAudioMeta);
unsafe impl Send for NdiSinkAudioMeta {}
unsafe impl Sync for NdiSinkAudioMeta {}
impl NdiSinkAudioMeta {
pub fn add(
buffer: &mut gst::BufferRef,
buffers: Vec<(gst::Buffer, gst_audio::AudioInfo, i64)>,
) -> gst::MetaRefMut<Self, gst::meta::Standalone> {
unsafe {
// Manually dropping because gst_buffer_add_meta() takes ownership of the
// content of the struct
let mut params = mem::ManuallyDrop::new(imp::NdiSinkAudioMetaParams { buffers });
let meta = gst::ffi::gst_buffer_add_meta(
buffer.as_mut_ptr(),
imp::ndi_sink_audio_meta_get_info(),
&mut *params as *mut imp::NdiSinkAudioMetaParams as glib::ffi::gpointer,
) as *mut imp::NdiSinkAudioMeta;
Self::from_mut_ptr(buffer, meta)
}
}
pub fn buffers(&self) -> &[(gst::Buffer, gst_audio::AudioInfo, i64)] {
&self.0.buffers
}
}
unsafe impl MetaAPI for NdiSinkAudioMeta {
type GstType = imp::NdiSinkAudioMeta;
fn meta_api() -> glib::Type {
imp::ndi_sink_audio_meta_api_get_type()
}
}
impl fmt::Debug for NdiSinkAudioMeta {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("NdiSinkAudioMeta")
.field("buffers", &self.buffers())
.finish()
}
}
mod imp {
use glib::translate::*;
use once_cell::sync::Lazy;
use std::mem;
use std::ptr;
pub(super) struct NdiSinkAudioMetaParams {
pub buffers: Vec<(gst::Buffer, gst_audio::AudioInfo, i64)>,
}
#[repr(C)]
pub struct NdiSinkAudioMeta {
parent: gst::ffi::GstMeta,
pub(super) buffers: Vec<(gst::Buffer, gst_audio::AudioInfo, i64)>,
}
pub(super) fn ndi_sink_audio_meta_api_get_type() -> glib::Type {
static TYPE: Lazy<glib::Type> = Lazy::new(|| unsafe {
let t = from_glib(gst::ffi::gst_meta_api_type_register(
b"GstNdiSinkAudioMetaAPI\0".as_ptr() as *const _,
[ptr::null::<std::os::raw::c_char>()].as_ptr() as *mut *const _,
));
assert_ne!(t, glib::Type::INVALID);
t
});
*TYPE
}
unsafe extern "C" fn ndi_sink_audio_meta_init(
meta: *mut gst::ffi::GstMeta,
params: glib::ffi::gpointer,
_buffer: *mut gst::ffi::GstBuffer,
) -> glib::ffi::gboolean {
assert!(!params.is_null());
let meta = &mut *(meta as *mut NdiSinkAudioMeta);
let params = ptr::read(params as *const NdiSinkAudioMetaParams);
ptr::write(&mut meta.buffers, params.buffers);
true.into_glib()
}
unsafe extern "C" fn ndi_sink_audio_meta_free(
meta: *mut gst::ffi::GstMeta,
_buffer: *mut gst::ffi::GstBuffer,
) {
let meta = &mut *(meta as *mut NdiSinkAudioMeta);
ptr::drop_in_place(&mut meta.buffers);
}
unsafe extern "C" fn ndi_sink_audio_meta_transform(
dest: *mut gst::ffi::GstBuffer,
meta: *mut gst::ffi::GstMeta,
_buffer: *mut gst::ffi::GstBuffer,
_type_: glib::ffi::GQuark,
_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let meta = &*(meta as *mut NdiSinkAudioMeta);
super::NdiSinkAudioMeta::add(gst::BufferRef::from_mut_ptr(dest), meta.buffers.clone());
true.into_glib()
}
pub(super) fn ndi_sink_audio_meta_get_info() -> *const gst::ffi::GstMetaInfo {
struct MetaInfo(ptr::NonNull<gst::ffi::GstMetaInfo>);
unsafe impl Send for MetaInfo {}
unsafe impl Sync for MetaInfo {}
static META_INFO: Lazy<MetaInfo> = Lazy::new(|| unsafe {
MetaInfo(
ptr::NonNull::new(gst::ffi::gst_meta_register(
ndi_sink_audio_meta_api_get_type().into_glib(),
b"GstNdiSinkAudioMeta\0".as_ptr() as *const _,
mem::size_of::<NdiSinkAudioMeta>(),
Some(ndi_sink_audio_meta_init),
Some(ndi_sink_audio_meta_free),
Some(ndi_sink_audio_meta_transform),
) as *mut gst::ffi::GstMetaInfo)
.expect("Failed to register meta API"),
)
});
META_INFO.0.as_ptr()
}
}

632
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use gst::prelude::*;
use gst::subclass::prelude::*;
use gst::{gst_debug, gst_error};
use gst_base::prelude::*;
use gst_base::subclass::base_src::CreateSuccess;
use gst_base::subclass::prelude::*;
use std::sync::Mutex;
use std::{i32, u32};
use once_cell::sync::Lazy;
use crate::ndisys;
use crate::ndisrcmeta;
use crate::Buffer;
use crate::Receiver;
use crate::ReceiverControlHandle;
use crate::ReceiverItem;
use crate::RecvColorFormat;
use crate::TimestampMode;
use crate::DEFAULT_RECEIVER_NDI_NAME;
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
gst::DebugCategory::new(
"ndisrc",
gst::DebugColorFlags::empty(),
Some("NewTek NDI Source"),
)
});
#[derive(Debug, Clone)]
struct Settings {
ndi_name: Option<String>,
url_address: Option<String>,
connect_timeout: u32,
timeout: u32,
max_queue_length: u32,
receiver_ndi_name: String,
bandwidth: ndisys::NDIlib_recv_bandwidth_e,
color_format: RecvColorFormat,
timestamp_mode: TimestampMode,
}
impl Default for Settings {
fn default() -> Self {
Settings {
ndi_name: None,
url_address: None,
receiver_ndi_name: DEFAULT_RECEIVER_NDI_NAME.clone(),
connect_timeout: 10000,
timeout: 5000,
max_queue_length: 10,
bandwidth: ndisys::NDIlib_recv_bandwidth_highest,
color_format: RecvColorFormat::UyvyBgra,
timestamp_mode: TimestampMode::ReceiveTimeTimecode,
}
}
}
struct State {
video_info: Option<crate::VideoInfo>,
video_caps: Option<gst::Caps>,
audio_info: Option<crate::AudioInfo>,
audio_caps: Option<gst::Caps>,
current_latency: Option<gst::ClockTime>,
receiver: Option<Receiver>,
}
impl Default for State {
fn default() -> State {
State {
video_info: None,
video_caps: None,
audio_info: None,
audio_caps: None,
current_latency: gst::ClockTime::NONE,
receiver: None,
}
}
}
pub struct NdiSrc {
settings: Mutex<Settings>,
state: Mutex<State>,
receiver_controller: Mutex<Option<ReceiverControlHandle>>,
}
#[glib::object_subclass]
impl ObjectSubclass for NdiSrc {
const NAME: &'static str = "NdiSrc";
type Type = super::NdiSrc;
type ParentType = gst_base::BaseSrc;
fn new() -> Self {
Self {
settings: Mutex::new(Default::default()),
state: Mutex::new(Default::default()),
receiver_controller: Mutex::new(None),
}
}
}
impl ObjectImpl for NdiSrc {
fn properties() -> &'static [glib::ParamSpec] {
static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
vec![
glib::ParamSpecString::new(
"ndi-name",
"NDI Name",
"NDI stream name of the sender",
None,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecString::new(
"url-address",
"URL/Address",
"URL/address and port of the sender, e.g. 127.0.0.1:5961",
None,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecString::new(
"receiver-ndi-name",
"Receiver NDI Name",
"NDI stream name of this receiver",
Some(&*DEFAULT_RECEIVER_NDI_NAME),
glib::ParamFlags::READWRITE,
),
glib::ParamSpecUInt::new(
"connect-timeout",
"Connect Timeout",
"Connection timeout in ms",
0,
u32::MAX,
10000,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecUInt::new(
"timeout",
"Timeout",
"Receive timeout in ms",
0,
u32::MAX,
5000,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecUInt::new(
"max-queue-length",
"Max Queue Length",
"Maximum receive queue length",
0,
u32::MAX,
10,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecInt::new(
"bandwidth",
"Bandwidth",
"Bandwidth, -10 metadata-only, 10 audio-only, 100 highest",
-10,
100,
100,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecEnum::new(
"color-format",
"Color Format",
"Receive color format",
RecvColorFormat::static_type(),
RecvColorFormat::UyvyBgra as u32 as i32,
glib::ParamFlags::READWRITE,
),
glib::ParamSpecEnum::new(
"timestamp-mode",
"Timestamp Mode",
"Timestamp information to use for outgoing PTS",
TimestampMode::static_type(),
TimestampMode::ReceiveTimeTimecode as i32,
glib::ParamFlags::READWRITE,
),
]
});
PROPERTIES.as_ref()
}
fn constructed(&self, obj: &Self::Type) {
self.parent_constructed(obj);
// Initialize live-ness and notify the base class that
// we'd like to operate in Time format
obj.set_live(true);
obj.set_format(gst::Format::Time);
}
fn set_property(
&self,
obj: &Self::Type,
_id: usize,
value: &glib::Value,
pspec: &glib::ParamSpec,
) {
match pspec.name() {
"ndi-name" => {
let mut settings = self.settings.lock().unwrap();
let ndi_name = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing ndi-name from {:?} to {:?}",
settings.ndi_name,
ndi_name,
);
settings.ndi_name = ndi_name;
}
"url-address" => {
let mut settings = self.settings.lock().unwrap();
let url_address = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing url-address from {:?} to {:?}",
settings.url_address,
url_address,
);
settings.url_address = url_address;
}
"receiver-ndi-name" => {
let mut settings = self.settings.lock().unwrap();
let receiver_ndi_name = value.get::<Option<String>>().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing receiver-ndi-name from {:?} to {:?}",
settings.receiver_ndi_name,
receiver_ndi_name,
);
settings.receiver_ndi_name =
receiver_ndi_name.unwrap_or_else(|| DEFAULT_RECEIVER_NDI_NAME.clone());
}
"connect-timeout" => {
let mut settings = self.settings.lock().unwrap();
let connect_timeout = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing connect-timeout from {} to {}",
settings.connect_timeout,
connect_timeout,
);
settings.connect_timeout = connect_timeout;
}
"timeout" => {
let mut settings = self.settings.lock().unwrap();
let timeout = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing timeout from {} to {}",
settings.timeout,
timeout,
);
settings.timeout = timeout;
}
"max-queue-length" => {
let mut settings = self.settings.lock().unwrap();
let max_queue_length = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing max-queue-length from {} to {}",
settings.max_queue_length,
max_queue_length,
);
settings.max_queue_length = max_queue_length;
}
"bandwidth" => {
let mut settings = self.settings.lock().unwrap();
let bandwidth = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing bandwidth from {} to {}",
settings.bandwidth,
bandwidth,
);
settings.bandwidth = bandwidth;
}
"color-format" => {
let mut settings = self.settings.lock().unwrap();
let color_format = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing color format from {:?} to {:?}",
settings.color_format,
color_format,
);
settings.color_format = color_format;
}
"timestamp-mode" => {
let mut settings = self.settings.lock().unwrap();
let timestamp_mode = value.get().unwrap();
gst_debug!(
CAT,
obj: obj,
"Changing timestamp mode from {:?} to {:?}",
settings.timestamp_mode,
timestamp_mode
);
if settings.timestamp_mode != timestamp_mode {
let _ = obj.post_message(gst::message::Latency::builder().src(obj).build());
}
settings.timestamp_mode = timestamp_mode;
}
_ => unimplemented!(),
}
}
fn property(&self, _obj: &Self::Type, _id: usize, pspec: &glib::ParamSpec) -> glib::Value {
match pspec.name() {
"ndi-name" => {
let settings = self.settings.lock().unwrap();
settings.ndi_name.to_value()
}
"url-address" => {
let settings = self.settings.lock().unwrap();
settings.url_address.to_value()
}
"receiver-ndi-name" => {
let settings = self.settings.lock().unwrap();
settings.receiver_ndi_name.to_value()
}
"connect-timeout" => {
let settings = self.settings.lock().unwrap();
settings.connect_timeout.to_value()
}
"timeout" => {
let settings = self.settings.lock().unwrap();
settings.timeout.to_value()
}
"max-queue-length" => {
let settings = self.settings.lock().unwrap();
settings.max_queue_length.to_value()
}
"bandwidth" => {
let settings = self.settings.lock().unwrap();
settings.bandwidth.to_value()
}
"color-format" => {
let settings = self.settings.lock().unwrap();
settings.color_format.to_value()
}
"timestamp-mode" => {
let settings = self.settings.lock().unwrap();
settings.timestamp_mode.to_value()
}
_ => unimplemented!(),
}
}
}
impl GstObjectImpl for NdiSrc {}
impl ElementImpl for NdiSrc {
fn metadata() -> Option<&'static gst::subclass::ElementMetadata> {
static ELEMENT_METADATA: Lazy<gst::subclass::ElementMetadata> = Lazy::new(|| {
gst::subclass::ElementMetadata::new(
"NewTek NDI Source",
"Source/Audio/Video/Network",
"NewTek NDI source",
"Ruben Gonzalez <rubenrua@teltek.es>, Daniel Vilar <daniel.peiteado@teltek.es>, Sebastian Dröge <sebastian@centricular.com>",
)
});
Some(&*ELEMENT_METADATA)
}
fn pad_templates() -> &'static [gst::PadTemplate] {
static PAD_TEMPLATES: Lazy<Vec<gst::PadTemplate>> = Lazy::new(|| {
let src_pad_template = gst::PadTemplate::new(
"src",
gst::PadDirection::Src,
gst::PadPresence::Always,
&gst::Caps::builder("application/x-ndi").build(),
)
.unwrap();
vec![src_pad_template]
});
PAD_TEMPLATES.as_ref()
}
fn change_state(
&self,
element: &Self::Type,
transition: gst::StateChange,
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
match transition {
gst::StateChange::PausedToPlaying => {
if let Some(ref controller) = *self.receiver_controller.lock().unwrap() {
controller.set_playing(true);
}
}
gst::StateChange::PlayingToPaused => {
if let Some(ref controller) = *self.receiver_controller.lock().unwrap() {
controller.set_playing(false);
}
}
gst::StateChange::PausedToReady => {
if let Some(ref controller) = *self.receiver_controller.lock().unwrap() {
controller.shutdown();
}
}
_ => (),
}
self.parent_change_state(element, transition)
}
}
impl BaseSrcImpl for NdiSrc {
fn negotiate(&self, element: &Self::Type) -> Result<(), gst::LoggableError> {
element
.set_caps(&gst::Caps::builder("application/x-ndi").build())
.map_err(|_| gst::loggable_error!(CAT, "Failed to negotiate caps",))
}
fn unlock(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
gst_debug!(CAT, obj: element, "Unlocking",);
if let Some(ref controller) = *self.receiver_controller.lock().unwrap() {
controller.set_flushing(true);
}
Ok(())
}
fn unlock_stop(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
gst_debug!(CAT, obj: element, "Stop unlocking",);
if let Some(ref controller) = *self.receiver_controller.lock().unwrap() {
controller.set_flushing(false);
}
Ok(())
}
fn start(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
*self.state.lock().unwrap() = Default::default();
let settings = self.settings.lock().unwrap().clone();
if settings.ndi_name.is_none() && settings.url_address.is_none() {
return Err(gst::error_msg!(
gst::LibraryError::Settings,
["No NDI name or URL/address given"]
));
}
let receiver = Receiver::connect(
element.upcast_ref(),
settings.ndi_name.as_deref(),
settings.url_address.as_deref(),
&settings.receiver_ndi_name,
settings.connect_timeout,
settings.bandwidth,
settings.color_format.into(),
settings.timestamp_mode,
settings.timeout,
settings.max_queue_length as usize,
);
match receiver {
None => Err(gst::error_msg!(
gst::ResourceError::NotFound,
["Could not connect to this source"]
)),
Some(receiver) => {
*self.receiver_controller.lock().unwrap() =
Some(receiver.receiver_control_handle());
let mut state = self.state.lock().unwrap();
state.receiver = Some(receiver);
Ok(())
}
}
}
fn stop(&self, _element: &Self::Type) -> Result<(), gst::ErrorMessage> {
if let Some(ref controller) = self.receiver_controller.lock().unwrap().take() {
controller.shutdown();
}
*self.state.lock().unwrap() = State::default();
Ok(())
}
fn query(&self, element: &Self::Type, query: &mut gst::QueryRef) -> bool {
use gst::QueryView;
match query.view_mut() {
QueryView::Scheduling(ref mut q) => {
q.set(gst::SchedulingFlags::SEQUENTIAL, 1, -1, 0);
q.add_scheduling_modes(&[gst::PadMode::Push]);
true
}
QueryView::Latency(ref mut q) => {
let state = self.state.lock().unwrap();
let settings = self.settings.lock().unwrap();
if let Some(latency) = state.current_latency {
let min = if matches!(
settings.timestamp_mode,
TimestampMode::ReceiveTimeTimecode | TimestampMode::ReceiveTimeTimestamp
) {
latency
} else {
gst::ClockTime::ZERO
};
let max = settings.max_queue_length as u64 * latency;
gst_debug!(
CAT,
obj: element,
"Returning latency min {} max {}",
min,
max
);
q.set(true, min, max);
true
} else {
false
}
}
_ => BaseSrcImplExt::parent_query(self, element, query),
}
}
fn create(
&self,
element: &Self::Type,
_offset: u64,
_buffer: Option<&mut gst::BufferRef>,
_length: u32,
) -> Result<CreateSuccess, gst::FlowError> {
let recv = {
let mut state = self.state.lock().unwrap();
match state.receiver.take() {
Some(recv) => recv,
None => {
gst_error!(CAT, obj: element, "Have no receiver");
return Err(gst::FlowError::Error);
}
}
};
let res = recv.capture();
let mut state = self.state.lock().unwrap();
state.receiver = Some(recv);
match res {
ReceiverItem::Buffer(buffer) => {
let buffer = match buffer {
Buffer::Audio(mut buffer, info) => {
if state.audio_info.as_ref() != Some(&info) {
let caps = info.to_caps().map_err(|_| {
gst::element_error!(
element,
gst::ResourceError::Settings,
["Invalid audio info received: {:?}", info]
);
gst::FlowError::NotNegotiated
})?;
state.audio_info = Some(info);
state.audio_caps = Some(caps);
}
{
let buffer = buffer.get_mut().unwrap();
ndisrcmeta::NdiSrcMeta::add(
buffer,
ndisrcmeta::StreamType::Audio,
state.audio_caps.as_ref().unwrap(),
);
}
buffer
}
Buffer::Video(mut buffer, info) => {
let mut latency_changed = false;
if state.video_info.as_ref() != Some(&info) {
let caps = info.to_caps().map_err(|_| {
gst::element_error!(
element,
gst::ResourceError::Settings,
["Invalid audio info received: {:?}", info]
);
gst::FlowError::NotNegotiated
})?;
state.video_info = Some(info);
state.video_caps = Some(caps);
latency_changed = state.current_latency != buffer.duration();
state.current_latency = buffer.duration();
}
{
let buffer = buffer.get_mut().unwrap();
ndisrcmeta::NdiSrcMeta::add(
buffer,
ndisrcmeta::StreamType::Video,
state.video_caps.as_ref().unwrap(),
);
}
drop(state);
if latency_changed {
let _ = element.post_message(
gst::message::Latency::builder().src(element).build(),
);
}
buffer
}
};
Ok(CreateSuccess::NewBuffer(buffer))
}
ReceiverItem::Timeout => Err(gst::FlowError::Eos),
ReceiverItem::Flushing => Err(gst::FlowError::Flushing),
ReceiverItem::Error(err) => Err(err),
}
}
}

19
net/ndi/src/ndisrc/mod.rs Normal file
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use glib::prelude::*;
mod imp;
glib::wrapper! {
pub struct NdiSrc(ObjectSubclass<imp::NdiSrc>) @extends gst_base::BaseSrc, gst::Element, gst::Object;
}
unsafe impl Send for NdiSrc {}
unsafe impl Sync for NdiSrc {}
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
gst::Element::register(
Some(plugin),
"ndisrc",
gst::Rank::None,
NdiSrc::static_type(),
)
}

312
net/ndi/src/ndisrcdemux/imp.rs Normal file
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use gst::prelude::*;
use gst::subclass::prelude::*;
use gst::{gst_debug, gst_error, gst_log};
use std::sync::Mutex;
use once_cell::sync::Lazy;
use crate::ndisrcmeta;
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
gst::DebugCategory::new(
"ndisrcdemux",
gst::DebugColorFlags::empty(),
Some("NewTek NDI Source Demuxer"),
)
});
#[derive(Default)]
struct State {
combiner: gst_base::UniqueFlowCombiner,
video_pad: Option<gst::Pad>,
video_caps: Option<gst::Caps>,
audio_pad: Option<gst::Pad>,
audio_caps: Option<gst::Caps>,
}
pub struct NdiSrcDemux {
sinkpad: gst::Pad,
state: Mutex<State>,
}
#[glib::object_subclass]
impl ObjectSubclass for NdiSrcDemux {
const NAME: &'static str = "NdiSrcDemux";
type Type = super::NdiSrcDemux;
type ParentType = gst::Element;
fn with_class(klass: &Self::Class) -> Self {
let templ = klass.pad_template("sink").unwrap();
let sinkpad = gst::Pad::builder_with_template(&templ, Some("sink"))
.flags(gst::PadFlags::FIXED_CAPS)
.chain_function(|pad, parent, buffer| {
NdiSrcDemux::catch_panic_pad_function(
parent,
|| Err(gst::FlowError::Error),
|self_, element| self_.sink_chain(pad, element, buffer),
)
})
.event_function(|pad, parent, event| {
NdiSrcDemux::catch_panic_pad_function(
parent,
|| false,
|self_, element| self_.sink_event(pad, element, event),
)
})
.build();
Self {
sinkpad,
state: Mutex::new(State::default()),
}
}
}
impl ObjectImpl for NdiSrcDemux {
fn constructed(&self, obj: &Self::Type) {
self.parent_constructed(obj);
obj.add_pad(&self.sinkpad).unwrap();
}
}
impl GstObjectImpl for NdiSrcDemux {}
impl ElementImpl for NdiSrcDemux {
fn metadata() -> Option<&'static gst::subclass::ElementMetadata> {
static ELEMENT_METADATA: Lazy<gst::subclass::ElementMetadata> = Lazy::new(|| {
gst::subclass::ElementMetadata::new(
"NewTek NDI Source Demuxer",
"Demuxer/Audio/Video",
"NewTek NDI source demuxer",
"Sebastian Dröge <sebastian@centricular.com>",
)
});
Some(&*ELEMENT_METADATA)
}
fn pad_templates() -> &'static [gst::PadTemplate] {
static PAD_TEMPLATES: Lazy<Vec<gst::PadTemplate>> = Lazy::new(|| {
let sink_pad_template = gst::PadTemplate::new(
"sink",
gst::PadDirection::Sink,
gst::PadPresence::Always,
&gst::Caps::builder("application/x-ndi").build(),
)
.unwrap();
let audio_src_pad_template = gst::PadTemplate::new(
"audio",
gst::PadDirection::Src,
gst::PadPresence::Sometimes,
&gst::Caps::builder("audio/x-raw").build(),
)
.unwrap();
let video_src_pad_template = gst::PadTemplate::new(
"video",
gst::PadDirection::Src,
gst::PadPresence::Sometimes,
&gst::Caps::builder("video/x-raw").build(),
)
.unwrap();
vec![
sink_pad_template,
audio_src_pad_template,
video_src_pad_template,
]
});
PAD_TEMPLATES.as_ref()
}
fn change_state(
&self,
element: &Self::Type,
transition: gst::StateChange,
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
let res = self.parent_change_state(element, transition)?;
match transition {
gst::StateChange::PausedToReady => {
let mut state = self.state.lock().unwrap();
for pad in [state.audio_pad.take(), state.video_pad.take()]
.iter()
.flatten()
{
element.remove_pad(pad).unwrap();
}
*state = State::default();
}
_ => (),
}
Ok(res)
}
}
impl NdiSrcDemux {
fn sink_chain(
&self,
pad: &gst::Pad,
element: &super::NdiSrcDemux,
mut buffer: gst::Buffer,
) -> Result<gst::FlowSuccess, gst::FlowError> {
gst_log!(CAT, obj: pad, "Handling buffer {:?}", buffer);
let meta = buffer.make_mut().meta_mut::<ndisrcmeta::NdiSrcMeta>().ok_or_else(|| {
gst_error!(CAT, obj: element, "Buffer without NDI source meta");
gst::FlowError::Error
})?;
let mut events = vec![];
let srcpad;
let mut add_pad = false;
let mut state = self.state.lock().unwrap();
let caps = meta.caps();
match meta.stream_type() {
ndisrcmeta::StreamType::Audio => {
if let Some(ref pad) = state.audio_pad {
srcpad = pad.clone();
} else {
gst_debug!(CAT, obj: element, "Adding audio pad with caps {}", caps);
let klass = element.element_class();
let templ = klass.pad_template("audio").unwrap();
let pad = gst::Pad::builder_with_template(&templ, Some("audio"))
.flags(gst::PadFlags::FIXED_CAPS)
.build();
let mut caps_event = Some(gst::event::Caps::new(&caps));
self.sinkpad.sticky_events_foreach(|ev| {
if ev.type_() < gst::EventType::Caps {
events.push(ev.clone());
} else {
if let Some(ev) = caps_event.take() {
events.push(ev);
}
if ev.type_() != gst::EventType::Caps {
events.push(ev.clone());
}
}
std::ops::ControlFlow::Continue(gst::EventForeachAction::Keep)
});
state.audio_caps = Some(caps.clone());
state.audio_pad = Some(pad.clone());
let _ = pad.set_active(true);
for ev in events.drain(..) {
let _ = pad.store_sticky_event(&ev);
}
state.combiner.add_pad(&pad);
add_pad = true;
srcpad = pad;
}
if state.audio_caps.as_ref() != Some(&caps) {
gst_debug!(CAT, obj: element, "Audio caps changed to {}", caps);
events.push(gst::event::Caps::new(&caps));
state.audio_caps = Some(caps);
}
}
ndisrcmeta::StreamType::Video => {
if let Some(ref pad) = state.video_pad {
srcpad = pad.clone();
} else {
gst_debug!(CAT, obj: element, "Adding video pad with caps {}", caps);
let klass = element.element_class();
let templ = klass.pad_template("video").unwrap();
let pad = gst::Pad::builder_with_template(&templ, Some("video"))
.flags(gst::PadFlags::FIXED_CAPS)
.build();
let mut caps_event = Some(gst::event::Caps::new(&caps));
self.sinkpad.sticky_events_foreach(|ev| {
if ev.type_() < gst::EventType::Caps {
events.push(ev.clone());
} else {
if let Some(ev) = caps_event.take() {
events.push(ev);
}
if ev.type_() != gst::EventType::Caps {
events.push(ev.clone());
}
}
std::ops::ControlFlow::Continue(gst::EventForeachAction::Keep)
});
state.video_caps = Some(caps.clone());
state.video_pad = Some(pad.clone());
let _ = pad.set_active(true);
for ev in events.drain(..) {
let _ = pad.store_sticky_event(&ev);
}
state.combiner.add_pad(&pad);
add_pad = true;
srcpad = pad;
}
if state.video_caps.as_ref() != Some(&caps) {
gst_debug!(CAT, obj: element, "Video caps changed to {}", caps);
events.push(gst::event::Caps::new(&caps));
state.video_caps = Some(caps);
}
}
}
drop(state);
meta.remove().unwrap();
if add_pad {
element.add_pad(&srcpad).unwrap();
}
for ev in events {
srcpad.push_event(ev);
}
let res = srcpad.push(buffer);
let mut state = self.state.lock().unwrap();
state.combiner.update_pad_flow(&srcpad, res)
}
fn sink_event(&self,
pad: &gst::Pad,
element: &super::NdiSrcDemux,
event: gst::Event
) -> bool {
use gst::EventView;
gst_log!(CAT, obj: pad, "Handling event {:?}", event);
if let EventView::Eos(_) = event.view() {
if element.num_src_pads() == 0 {
// error out on EOS if no src pad are available
gst::element_error!(
element,
gst::StreamError::Demux,
["EOS without available srcpad(s)"]
);
}
}
pad.event_default(Some(element), event)
}
}

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use glib::prelude::*;
mod imp;
glib::wrapper! {
pub struct NdiSrcDemux(ObjectSubclass<imp::NdiSrcDemux>) @extends gst::Element, gst::Object;
}
unsafe impl Send for NdiSrcDemux {}
unsafe impl Sync for NdiSrcDemux {}
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
gst::Element::register(
Some(plugin),
"ndisrcdemux",
gst::Rank::Primary,
NdiSrcDemux::static_type(),
)
}

158
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use gst::prelude::*;
use std::fmt;
use std::mem;
#[repr(transparent)]
pub struct NdiSrcMeta(imp::NdiSrcMeta);
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum StreamType {
Audio,
Video,
}
unsafe impl Send for NdiSrcMeta {}
unsafe impl Sync for NdiSrcMeta {}
impl NdiSrcMeta {
pub fn add<'a>(
buffer: &'a mut gst::BufferRef,
stream_type: StreamType,
caps: &gst::Caps,
) -> gst::MetaRefMut<'a, Self, gst::meta::Standalone> {
unsafe {
// Manually dropping because gst_buffer_add_meta() takes ownership of the
// content of the struct
let mut params = mem::ManuallyDrop::new(imp::NdiSrcMetaParams {
caps: caps.clone(),
stream_type,
});
let meta = gst::ffi::gst_buffer_add_meta(
buffer.as_mut_ptr(),
imp::ndi_src_meta_get_info(),
&mut *params as *mut imp::NdiSrcMetaParams as glib::ffi::gpointer,
) as *mut imp::NdiSrcMeta;
Self::from_mut_ptr(buffer, meta)
}
}
pub fn stream_type(&self) -> StreamType {
self.0.stream_type
}
pub fn caps(&self) -> gst::Caps {
self.0.caps.clone()
}
}
unsafe impl MetaAPI for NdiSrcMeta {
type GstType = imp::NdiSrcMeta;
fn meta_api() -> glib::Type {
imp::ndi_src_meta_api_get_type()
}
}
impl fmt::Debug for NdiSrcMeta {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("NdiSrcMeta")
.field("stream_type", &self.stream_type())
.field("caps", &self.caps())
.finish()
}
}
mod imp {
use super::StreamType;
use glib::translate::*;
use once_cell::sync::Lazy;
use std::mem;
use std::ptr;
pub(super) struct NdiSrcMetaParams {
pub caps: gst::Caps,
pub stream_type: StreamType,
}
#[repr(C)]
pub struct NdiSrcMeta {
parent: gst::ffi::GstMeta,
pub(super) caps: gst::Caps,
pub(super) stream_type: StreamType,
}
pub(super) fn ndi_src_meta_api_get_type() -> glib::Type {
static TYPE: Lazy<glib::Type> = Lazy::new(|| unsafe {
let t = from_glib(gst::ffi::gst_meta_api_type_register(
b"GstNdiSrcMetaAPI\0".as_ptr() as *const _,
[ptr::null::<std::os::raw::c_char>()].as_ptr() as *mut *const _,
));
assert_ne!(t, glib::Type::INVALID);
t
});
*TYPE
}
unsafe extern "C" fn ndi_src_meta_init(
meta: *mut gst::ffi::GstMeta,
params: glib::ffi::gpointer,
_buffer: *mut gst::ffi::GstBuffer,
) -> glib::ffi::gboolean {
assert!(!params.is_null());
let meta = &mut *(meta as *mut NdiSrcMeta);
let params = ptr::read(params as *const NdiSrcMetaParams);
ptr::write(&mut meta.stream_type, params.stream_type);
ptr::write(&mut meta.caps, params.caps);
true.into_glib()
}
unsafe extern "C" fn ndi_src_meta_free(
meta: *mut gst::ffi::GstMeta,
_buffer: *mut gst::ffi::GstBuffer,
) {
let meta = &mut *(meta as *mut NdiSrcMeta);
ptr::drop_in_place(&mut meta.stream_type);
ptr::drop_in_place(&mut meta.caps);
}
unsafe extern "C" fn ndi_src_meta_transform(
_dest: *mut gst::ffi::GstBuffer,
_meta: *mut gst::ffi::GstMeta,
_buffer: *mut gst::ffi::GstBuffer,
_type_: glib::ffi::GQuark,
_data: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
false.into_glib()
}
pub(super) fn ndi_src_meta_get_info() -> *const gst::ffi::GstMetaInfo {
struct MetaInfo(ptr::NonNull<gst::ffi::GstMetaInfo>);
unsafe impl Send for MetaInfo {}
unsafe impl Sync for MetaInfo {}
static META_INFO: Lazy<MetaInfo> = Lazy::new(|| unsafe {
MetaInfo(
ptr::NonNull::new(gst::ffi::gst_meta_register(
ndi_src_meta_api_get_type().into_glib(),
b"GstNdiSrcMeta\0".as_ptr() as *const _,
mem::size_of::<NdiSrcMeta>(),
Some(ndi_src_meta_init),
Some(ndi_src_meta_free),
Some(ndi_src_meta_transform),
) as *mut gst::ffi::GstMetaInfo)
.expect("Failed to register meta API"),
)
});
META_INFO.0.as_ptr()
}
}

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#![allow(non_camel_case_types, non_upper_case_globals, non_snake_case)]
#[cfg_attr(
all(target_arch = "x86_64", target_os = "windows"),
link(name = "Processing.NDI.Lib.x64")
)]
#[cfg_attr(
all(target_arch = "x86", target_os = "windows"),
link(name = "Processing.NDI.Lib.x86")
)]
#[cfg_attr(
not(any(target_os = "windows", target_os = "macos")),
link(name = "ndi")
)]
extern "C" {
pub fn NDIlib_initialize() -> bool;
pub fn NDIlib_destroy();
pub fn NDIlib_find_create_v2(
p_create_settings: *const NDIlib_find_create_t,
) -> NDIlib_find_instance_t;
pub fn NDIlib_find_destroy(p_instance: NDIlib_find_instance_t);
pub fn NDIlib_find_wait_for_sources(
p_instance: NDIlib_find_instance_t,
timeout_in_ms: u32,
) -> bool;
pub fn NDIlib_find_get_current_sources(
p_instance: NDIlib_find_instance_t,
p_no_sources: *mut u32,
) -> *const NDIlib_source_t;
pub fn NDIlib_recv_create_v3(
p_create_settings: *const NDIlib_recv_create_v3_t,
) -> NDIlib_recv_instance_t;
pub fn NDIlib_recv_destroy(p_instance: NDIlib_recv_instance_t);
pub fn NDIlib_recv_set_tally(
p_instance: NDIlib_recv_instance_t,
p_tally: *const NDIlib_tally_t,
) -> bool;
pub fn NDIlib_recv_send_metadata(
p_instance: NDIlib_recv_instance_t,
p_metadata: *const NDIlib_metadata_frame_t,
) -> bool;
pub fn NDIlib_recv_capture_v3(
p_instance: NDIlib_recv_instance_t,
p_video_data: *mut NDIlib_video_frame_v2_t,
p_audio_data: *mut NDIlib_audio_frame_v3_t,
p_metadata: *mut NDIlib_metadata_frame_t,
timeout_in_ms: u32,
) -> NDIlib_frame_type_e;
pub fn NDIlib_recv_free_video_v2(
p_instance: NDIlib_recv_instance_t,
p_video_data: *mut NDIlib_video_frame_v2_t,
);
pub fn NDIlib_recv_free_audio_v3(
p_instance: NDIlib_recv_instance_t,
p_audio_data: *mut NDIlib_audio_frame_v3_t,
);
pub fn NDIlib_recv_free_metadata(
p_instance: NDIlib_recv_instance_t,
p_metadata: *mut NDIlib_metadata_frame_t,
);
pub fn NDIlib_recv_get_queue(
p_instance: NDIlib_recv_instance_t,
p_total: *mut NDIlib_recv_queue_t,
);
pub fn NDIlib_send_create(
p_create_settings: *const NDIlib_send_create_t,
) -> NDIlib_send_instance_t;
pub fn NDIlib_send_destroy(p_instance: NDIlib_send_instance_t);
pub fn NDIlib_send_send_video_v2(
p_instance: NDIlib_send_instance_t,
p_video_data: *const NDIlib_video_frame_v2_t,
);
pub fn NDIlib_send_send_audio_v3(
p_instance: NDIlib_send_instance_t,
p_audio_data: *const NDIlib_audio_frame_v3_t,
);
}
pub type NDIlib_find_instance_t = *mut ::std::os::raw::c_void;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_find_create_t {
pub show_local_sources: bool,
pub p_groups: *const ::std::os::raw::c_char,
pub p_extra_ips: *const ::std::os::raw::c_char,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_source_t {
pub p_ndi_name: *const ::std::os::raw::c_char,
pub p_url_address: *const ::std::os::raw::c_char,
}
#[repr(i32)]
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum NDIlib_frame_type_e {
NDIlib_frame_type_none = 0,
NDIlib_frame_type_video = 1,
NDIlib_frame_type_audio = 2,
NDIlib_frame_type_metadata = 3,
NDIlib_frame_type_error = 4,
NDIlib_frame_type_status_change = 100,
}
pub type NDIlib_recv_bandwidth_e = i32;
pub const NDIlib_recv_bandwidth_metadata_only: NDIlib_recv_bandwidth_e = -10;
pub const NDIlib_recv_bandwidth_audio_only: NDIlib_recv_bandwidth_e = 10;
pub const NDIlib_recv_bandwidth_lowest: NDIlib_recv_bandwidth_e = 0;
pub const NDIlib_recv_bandwidth_highest: NDIlib_recv_bandwidth_e = 100;
pub type NDIlib_recv_color_format_e = u32;
pub const NDIlib_recv_color_format_BGRX_BGRA: NDIlib_recv_color_format_e = 0;
pub const NDIlib_recv_color_format_UYVY_BGRA: NDIlib_recv_color_format_e = 1;
pub const NDIlib_recv_color_format_RGBX_RGBA: NDIlib_recv_color_format_e = 2;
pub const NDIlib_recv_color_format_UYVY_RGBA: NDIlib_recv_color_format_e = 3;
pub const NDIlib_recv_color_format_fastest: NDIlib_recv_color_format_e = 100;
pub const NDIlib_recv_color_format_best: NDIlib_recv_color_format_e = 101;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed: NDIlib_recv_color_format_e = 300;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v2: NDIlib_recv_color_format_e = 301;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v3: NDIlib_recv_color_format_e = 302;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v3_with_audio: NDIlib_recv_color_format_e = 304;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v4: NDIlib_recv_color_format_e = 303;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v4_with_audio: NDIlib_recv_color_format_e = 305;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v5: NDIlib_recv_color_format_e = 307;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_recv_color_format_ex_compressed_v5_with_audio: NDIlib_recv_color_format_e = 308;
const fn make_fourcc(fourcc: &[u8; 4]) -> u32 {
((fourcc[0] as u32) << 0)
| ((fourcc[1] as u32) << 8)
| ((fourcc[2] as u32) << 16)
| ((fourcc[3] as u32) << 24)
}
pub type NDIlib_FourCC_video_type_e = u32;
pub const NDIlib_FourCC_video_type_UYVY: NDIlib_FourCC_video_type_e = make_fourcc(b"UYVY");
pub const NDIlib_FourCC_video_type_UYVA: NDIlib_FourCC_video_type_e = make_fourcc(b"UYVA");
pub const NDIlib_FourCC_video_type_P216: NDIlib_FourCC_video_type_e = make_fourcc(b"P216");
pub const NDIlib_FourCC_video_type_PA16: NDIlib_FourCC_video_type_e = make_fourcc(b"PA16");
pub const NDIlib_FourCC_video_type_YV12: NDIlib_FourCC_video_type_e = make_fourcc(b"YV12");
pub const NDIlib_FourCC_video_type_I420: NDIlib_FourCC_video_type_e = make_fourcc(b"I420");
pub const NDIlib_FourCC_video_type_NV12: NDIlib_FourCC_video_type_e = make_fourcc(b"NV12");
pub const NDIlib_FourCC_video_type_BGRA: NDIlib_FourCC_video_type_e = make_fourcc(b"BGRA");
pub const NDIlib_FourCC_video_type_BGRX: NDIlib_FourCC_video_type_e = make_fourcc(b"BGRX");
pub const NDIlib_FourCC_video_type_RGBA: NDIlib_FourCC_video_type_e = make_fourcc(b"RGBA");
pub const NDIlib_FourCC_video_type_RGBX: NDIlib_FourCC_video_type_e = make_fourcc(b"RGBX");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_SHQ0_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"SHQ0");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_SHQ2_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"SHQ2");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_SHQ7_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"SHQ7");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_SHQ0_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"shq0");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_SHQ2_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"shq2");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_SHQ7_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"shq7");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_H264_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"H264");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_H264_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"h264");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_HEVC_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"HEVC");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_HEVC_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"hevc");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_H264_alpha_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"A264");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_H264_alpha_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"a264");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_HEVC_alpha_highest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"AEVC");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_video_type_ex_HEVC_alpha_lowest_bandwidth: NDIlib_FourCC_video_type_e =
make_fourcc(b"aevc");
pub type NDIlib_FourCC_audio_type_e = u32;
pub const NDIlib_FourCC_audio_type_FLTp: NDIlib_FourCC_video_type_e = make_fourcc(b"FLTp");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_audio_type_AAC: NDIlib_FourCC_audio_type_e = 0x000000ff;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_FourCC_audio_type_Opus: NDIlib_FourCC_audio_type_e = make_fourcc(b"Opus");
#[cfg(feature = "advanced-sdk")]
pub type NDIlib_compressed_FourCC_type_e = u32;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_compressed_FourCC_type_H264: NDIlib_compressed_FourCC_type_e =
make_fourcc(b"H264");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_compressed_FourCC_type_HEVC: NDIlib_compressed_FourCC_type_e =
make_fourcc(b"HEVC");
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_compressed_FourCC_type_AAC: NDIlib_compressed_FourCC_type_e = 0x000000ff;
#[repr(u32)]
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum NDIlib_frame_format_type_e {
NDIlib_frame_format_type_progressive = 1,
NDIlib_frame_format_type_interleaved = 0,
NDIlib_frame_format_type_field_0 = 2,
NDIlib_frame_format_type_field_1 = 3,
}
pub const NDIlib_send_timecode_synthesize: i64 = ::std::i64::MAX;
pub const NDIlib_recv_timestamp_undefined: i64 = ::std::i64::MAX;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_recv_create_v3_t {
pub source_to_connect_to: NDIlib_source_t,
pub color_format: NDIlib_recv_color_format_e,
pub bandwidth: NDIlib_recv_bandwidth_e,
pub allow_video_fields: bool,
pub p_ndi_recv_name: *const ::std::os::raw::c_char,
}
pub type NDIlib_recv_instance_t = *mut ::std::os::raw::c_void;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_send_create_t {
pub p_ndi_name: *const ::std::os::raw::c_char,
pub p_groups: *const ::std::os::raw::c_char,
pub clock_video: bool,
pub clock_audio: bool,
}
pub type NDIlib_send_instance_t = *mut ::std::os::raw::c_void;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_tally_t {
pub on_program: bool,
pub on_preview: bool,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_recv_queue_t {
pub video_frames: i32,
pub audio_frames: i32,
pub metadata_frames: i32,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_metadata_frame_t {
pub length: ::std::os::raw::c_int,
pub timecode: i64,
pub p_data: *const ::std::os::raw::c_char,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_video_frame_v2_t {
pub xres: ::std::os::raw::c_int,
pub yres: ::std::os::raw::c_int,
pub FourCC: NDIlib_FourCC_video_type_e,
pub frame_rate_N: ::std::os::raw::c_int,
pub frame_rate_D: ::std::os::raw::c_int,
pub picture_aspect_ratio: ::std::os::raw::c_float,
pub frame_format_type: NDIlib_frame_format_type_e,
pub timecode: i64,
pub p_data: *const ::std::os::raw::c_char,
pub line_stride_or_data_size_in_bytes: ::std::os::raw::c_int,
pub p_metadata: *const ::std::os::raw::c_char,
pub timestamp: i64,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_audio_frame_v3_t {
pub sample_rate: ::std::os::raw::c_int,
pub no_channels: ::std::os::raw::c_int,
pub no_samples: ::std::os::raw::c_int,
pub timecode: i64,
pub FourCC: NDIlib_FourCC_audio_type_e,
pub p_data: *const ::std::os::raw::c_float,
pub channel_stride_or_data_size_in_bytes: ::std::os::raw::c_int,
pub p_metadata: *const ::std::os::raw::c_char,
pub timestamp: i64,
}
#[cfg(feature = "advanced-sdk")]
#[repr(packed)]
#[derive(Debug, Copy, Clone)]
pub struct NDIlib_compressed_packet_t {
pub version: u32,
pub fourcc: NDIlib_compressed_FourCC_type_e,
pub pts: i64,
pub dts: i64,
pub reserved: u64,
pub flags: u32,
pub data_size: u32,
pub extra_data_size: u32,
}
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_compressed_packet_flags_keyframe: u32 = 1;
#[cfg(feature = "advanced-sdk")]
pub const NDIlib_compressed_packet_version_0: u32 = 44;

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