2018-04-24 17:41:27 +00:00
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#![allow(non_camel_case_types, non_upper_case_globals, non_snake_case)]
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2018-04-09 05:53:04 +00:00
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use glib;
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use gst;
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use gst::prelude::*;
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2018-06-15 13:16:25 +00:00
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use gst_audio;
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2018-04-09 05:53:04 +00:00
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use gst_base::prelude::*;
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use gst_plugin::base_src::*;
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use gst_plugin::element::*;
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use gst_plugin::object::*;
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use gst_plugin::properties::*;
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use std::sync::Mutex;
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use std::{i32, u32};
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2018-04-13 10:06:15 +00:00
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use std::ptr;
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2018-06-15 13:16:25 +00:00
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2018-04-13 10:06:15 +00:00
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use ndilib::*;
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2018-06-26 12:07:43 +00:00
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use connect_ndi;
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use ndi_struct;
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2018-06-25 08:38:45 +00:00
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use stop_ndi;
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2018-04-13 10:06:15 +00:00
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2018-04-09 05:53:04 +00:00
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// Property value storage
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2018-04-12 15:17:59 +00:00
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#[derive(Debug, Clone)]
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2018-04-09 05:53:04 +00:00
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struct Settings {
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2018-04-12 15:17:59 +00:00
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stream_name: String,
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2018-05-31 09:14:11 +00:00
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ip: String,
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2018-04-09 05:53:04 +00:00
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}
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impl Default for Settings {
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fn default() -> Self {
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Settings {
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2018-04-12 15:17:59 +00:00
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stream_name: String::from("Fixed ndi stream name"),
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2018-05-31 09:14:11 +00:00
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ip: String::from(""),
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2018-04-09 05:53:04 +00:00
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}
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}
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}
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// Metadata for the properties
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2018-05-31 09:14:11 +00:00
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static PROPERTIES: [Property; 2] = [
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2018-05-31 09:16:29 +00:00
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Property::String(
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"stream-name",
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"Sream Name",
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"Name of the streaming device",
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None,
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PropertyMutability::ReadWrite,
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),
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Property::String(
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"ip",
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"Stream IP",
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"Stream IP",
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None,
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PropertyMutability::ReadWrite,
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),
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2018-04-09 05:53:04 +00:00
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];
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// Stream-specific state, i.e. audio format configuration
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// and sample offset
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struct State {
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2018-06-15 13:16:25 +00:00
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info: Option<gst_audio::AudioInfo>,
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2018-04-09 05:53:04 +00:00
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}
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impl Default for State {
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fn default() -> State {
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State {
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info: None,
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}
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}
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}
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struct ClockWait {
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clock_id: Option<gst::ClockId>,
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flushing: bool,
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}
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2018-04-30 08:18:17 +00:00
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struct Pts{
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pts: u64,
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offset: u64,
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}
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2018-04-09 05:53:04 +00:00
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// Struct containing all the element data
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2018-06-12 12:40:17 +00:00
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struct NdiAudioSrc {
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2018-04-09 05:53:04 +00:00
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cat: gst::DebugCategory,
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settings: Mutex<Settings>,
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state: Mutex<State>,
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clock_wait: Mutex<ClockWait>,
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2018-04-30 08:18:17 +00:00
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pts: Mutex<Pts>,
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2018-04-09 05:53:04 +00:00
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}
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2018-06-12 12:40:17 +00:00
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impl NdiAudioSrc {
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2018-04-09 05:53:04 +00:00
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// Called when a new instance is to be created
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fn new(element: &BaseSrc) -> Box<BaseSrcImpl<BaseSrc>> {
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// Initialize live-ness and notify the base class that
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// we'd like to operate in Time format
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2018-04-24 17:41:27 +00:00
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element.set_live(true);
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2018-04-09 05:53:04 +00:00
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element.set_format(gst::Format::Time);
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Box::new(Self {
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cat: gst::DebugCategory::new(
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2018-06-12 12:40:17 +00:00
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"ndiaudiosrc",
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2018-04-09 05:53:04 +00:00
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gst::DebugColorFlags::empty(),
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2018-06-15 13:16:25 +00:00
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"NewTek NDI Audio Source",
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2018-04-09 05:53:04 +00:00
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),
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settings: Mutex::new(Default::default()),
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state: Mutex::new(Default::default()),
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clock_wait: Mutex::new(ClockWait {
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clock_id: None,
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flushing: true,
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}),
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2018-04-30 08:18:17 +00:00
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pts: Mutex::new(Pts{
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pts: 0,
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offset: 0,
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}),
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2018-04-09 05:53:04 +00:00
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})
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}
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// Called exactly once when registering the type. Used for
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// setting up metadata for all instances, e.g. the name and
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// classification and the pad templates with their caps.
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//
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// Actual instances can create pads based on those pad templates
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// with a subset of the caps given here. In case of basesrc,
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// a "src" and "sink" pad template are required here and the base class
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// will automatically instantiate pads for them.
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//
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// Our element here can output f32 and f64
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fn class_init(klass: &mut BaseSrcClass) {
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klass.set_metadata(
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2018-06-12 12:40:17 +00:00
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"NewTek NDI Audio Source",
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2018-04-09 05:53:04 +00:00
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"Source",
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2018-06-25 08:38:45 +00:00
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"NewTek NDI audio source",
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"Ruben Gonzalez <rubenrua@teltek.es>, Daniel Vilar <daniel.peiteado@teltek.es>",
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2018-04-09 05:53:04 +00:00
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);
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// On the src pad, we can produce F32/F64 with any sample rate
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// and any number of channels
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let caps = gst::Caps::new_simple(
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2018-06-15 13:16:25 +00:00
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"audio/x-raw",
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2018-04-09 05:53:04 +00:00
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&[
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2018-05-31 09:16:29 +00:00
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(
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"format",
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&gst::List::new(&[
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2018-06-12 11:39:49 +00:00
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//TODO add all formats?
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2018-06-15 13:16:25 +00:00
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&gst_audio::AUDIO_FORMAT_F32.to_string(),
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&gst_audio::AUDIO_FORMAT_F64.to_string(),
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&gst_audio::AUDIO_FORMAT_S16.to_string(),
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2018-04-24 17:41:27 +00:00
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]),
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2018-04-09 05:53:04 +00:00
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),
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2018-06-15 13:16:25 +00:00
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("rate", &gst::IntRange::<i32>::new(1, i32::MAX)),
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("channels", &gst::IntRange::<i32>::new(1, i32::MAX)),
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("layout", &"interleaved"),
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2018-05-31 09:16:29 +00:00
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],
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);
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// The src pad template must be named "src" for basesrc
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// and specific a pad that is always there
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let src_pad_template = gst::PadTemplate::new(
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"src",
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gst::PadDirection::Src,
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gst::PadPresence::Always,
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&caps,
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2018-06-12 11:39:49 +00:00
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//&gst::Caps::new_any(),
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2018-05-31 09:16:29 +00:00
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);
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klass.add_pad_template(src_pad_template);
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2018-04-25 10:42:41 +00:00
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2018-05-31 09:16:29 +00:00
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// Install all our properties
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klass.install_properties(&PROPERTIES);
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}
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2018-06-20 08:23:19 +00:00
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}
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2018-06-15 13:16:25 +00:00
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2018-04-09 05:53:04 +00:00
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2018-05-31 09:16:29 +00:00
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// Virtual methods of GObject itself
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2018-06-12 12:40:17 +00:00
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impl ObjectImpl<BaseSrc> for NdiAudioSrc {
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2018-05-31 09:16:29 +00:00
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// Called whenever a value of a property is changed. It can be called
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// at any time from any thread.
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fn set_property(&self, obj: &glib::Object, id: u32, value: &glib::Value) {
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let prop = &PROPERTIES[id as usize];
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let element = obj.clone().downcast::<BaseSrc>().unwrap();
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match *prop {
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Property::String("stream-name", ..) => {
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let mut settings = self.settings.lock().unwrap();
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let stream_name = value.get().unwrap();
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gst_warning!(
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self.cat,
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obj: &element,
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"Changing stream-name from {} to {}",
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settings.stream_name,
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stream_name
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);
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settings.stream_name = stream_name;
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drop(settings);
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let _ =
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2018-05-31 09:14:11 +00:00
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element.post_message(&gst::Message::new_latency().src(Some(&element)).build());
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2018-05-31 09:16:29 +00:00
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},
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Property::String("ip", ..) => {
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let mut settings = self.settings.lock().unwrap();
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let ip = value.get().unwrap();
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gst_warning!(
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self.cat,
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obj: &element,
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"Changing ip from {} to {}",
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settings.ip,
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ip
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);
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settings.ip = ip;
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drop(settings);
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let _ =
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2018-04-12 15:17:59 +00:00
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element.post_message(&gst::Message::new_latency().src(Some(&element)).build());
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2018-05-31 09:16:29 +00:00
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}
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_ => unimplemented!(),
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2018-04-12 15:17:59 +00:00
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}
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2018-04-09 05:53:04 +00:00
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}
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2018-05-31 09:16:29 +00:00
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// Called whenever a value of a property is read. It can be called
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// at any time from any thread.
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fn get_property(&self, _obj: &glib::Object, id: u32) -> Result<glib::Value, ()> {
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let prop = &PROPERTIES[id as usize];
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match *prop {
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2018-06-12 12:40:17 +00:00
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Property::String("stream-name", ..) => {
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2018-05-31 09:16:29 +00:00
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let settings = self.settings.lock().unwrap();
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//TODO to_value supongo que solo funciona con numeros
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Ok(settings.stream_name.to_value())
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},
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2018-06-12 12:40:17 +00:00
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Property::String("ip", ..) => {
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2018-05-31 09:16:29 +00:00
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let settings = self.settings.lock().unwrap();
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//TODO to_value supongo que solo funciona con numeros
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Ok(settings.ip.to_value())
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}
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_ => unimplemented!(),
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2018-04-12 15:17:59 +00:00
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}
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2018-04-09 05:53:04 +00:00
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}
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}
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2018-05-31 09:16:29 +00:00
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// Virtual methods of gst::Element. We override none
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2018-06-12 12:40:17 +00:00
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impl ElementImpl<BaseSrc> for NdiAudioSrc {
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2018-04-09 05:53:04 +00:00
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}
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2018-05-31 09:16:29 +00:00
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// Virtual methods of gst_base::BaseSrc
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2018-06-12 12:40:17 +00:00
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impl BaseSrcImpl<BaseSrc> for NdiAudioSrc {
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2018-05-31 09:16:29 +00:00
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// Called whenever the input/output caps are changing, i.e. in the very beginning before data
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// flow happens and whenever the situation in the pipeline is changing. All buffers after this
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// call have the caps given here.
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//
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// We simply remember the resulting AudioInfo from the caps to be able to use this for knowing
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// the sample rate, etc. when creating buffers
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fn set_caps(&self, element: &BaseSrc, caps: &gst::CapsRef) -> bool {
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2018-06-15 13:16:25 +00:00
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let info = match gst_audio::AudioInfo::from_caps(caps) {
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2018-05-31 09:16:29 +00:00
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None => return false,
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Some(info) => info,
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};
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2018-04-23 11:42:38 +00:00
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2018-05-31 09:16:29 +00:00
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gst_debug!(self.cat, obj: element, "Configuring for caps {}", caps);
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2018-04-23 11:42:38 +00:00
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2018-05-31 09:16:29 +00:00
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// TODO Puede que falle si no creamos la estructura de cero, pero si lo hacemos no podemos poner recv a none
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let mut state = self.state.lock().unwrap();
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state.info = Some(info);
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2018-04-23 11:42:38 +00:00
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2018-05-31 09:16:29 +00:00
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true
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2018-05-31 09:14:11 +00:00
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}
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2018-04-23 11:42:38 +00:00
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2018-05-31 09:16:29 +00:00
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// Called when starting, so we can initialize all stream-related state to its defaults
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fn start(&self, element: &BaseSrc) -> bool {
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// Reset state
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*self.state.lock().unwrap() = Default::default();
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self.unlock_stop(element);
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gst_warning!(self.cat, obj: element, "Starting");
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let settings = self.settings.lock().unwrap();
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2018-06-26 12:07:43 +00:00
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return connect_ndi(element, settings.ip.clone(), settings.stream_name.clone());
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2018-05-31 09:16:29 +00:00
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2018-06-26 12:07:43 +00:00
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}
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2018-04-09 05:53:04 +00:00
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2018-06-26 12:07:43 +00:00
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// Called when shutting down the element so we can release all stream-related state
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fn stop(&self, element: &BaseSrc) -> bool {
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// Reset state
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*self.state.lock().unwrap() = Default::default();
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stop_ndi();
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// Commented because when adding ndi destroy stopped in this line
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//*self.state.lock().unwrap() = Default::default();
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self.unlock(element);
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gst_info!(self.cat, obj: element, "Stopped");
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2018-04-09 05:53:04 +00:00
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2018-06-26 12:07:43 +00:00
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true
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}
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2018-04-30 08:18:17 +00:00
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2018-06-26 12:07:43 +00:00
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fn fixate(&self, element: &BaseSrc, caps: gst::Caps) -> gst::Caps {
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//We need to set the correct caps resolution and framerate
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unsafe{
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let recv = match ndi_struct.recv{
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2018-06-12 11:41:48 +00:00
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None => {
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//TODO Update gst_element_error with one more descriptive
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//println!("pNDI_recv no encontrado");
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gst_element_error!(element, gst::CoreError::Negotiation, ["No encontramos ndi recv"]);
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return caps;
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}
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Some(ref recv) => recv.clone(),
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};
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let pNDI_recv = recv.recv;
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let mut pts2 = self.pts.lock().unwrap();
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2018-06-26 11:06:55 +00:00
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let audio_frame: NDIlib_audio_frame_v2_t = Default::default();
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let mut frame_type: NDIlib_frame_type_e = NDIlib_frame_type_e::NDIlib_frame_type_none;
|
2018-06-26 12:07:43 +00:00
|
|
|
while frame_type != NDIlib_frame_type_e::NDIlib_frame_type_audio{
|
2018-06-26 11:06:55 +00:00
|
|
|
frame_type = NDIlib_recv_capture_v2(pNDI_recv, ptr::null(), &audio_frame, ptr::null(), 1000);
|
|
|
|
}
|
|
|
|
pts2.pts = (audio_frame.timecode as u64) * 100;
|
|
|
|
|
2018-06-12 11:41:48 +00:00
|
|
|
let mut caps = gst::Caps::truncate(caps);
|
|
|
|
{
|
|
|
|
let caps = caps.make_mut();
|
|
|
|
let s = caps.get_mut_structure(0).unwrap();
|
2018-06-20 08:23:19 +00:00
|
|
|
//s.fixate_field_nearest_int("rate", audio_frame.sample_rate);
|
|
|
|
s.fixate_field_nearest_int("rate", audio_frame.sample_rate / audio_frame.no_channels);
|
2018-06-15 13:16:25 +00:00
|
|
|
s.fixate_field_nearest_int("channels", audio_frame.no_channels);
|
2018-06-12 11:41:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Let BaseSrc fixate anything else for us. We could've alternatively have
|
|
|
|
// called Caps::fixate() here
|
|
|
|
element.parent_fixate(caps)
|
|
|
|
}
|
2018-06-25 08:38:45 +00:00
|
|
|
}
|
2018-05-31 09:16:29 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
//Creates the audio buffers
|
|
|
|
fn create(
|
|
|
|
&self,
|
|
|
|
element: &BaseSrc,
|
|
|
|
_offset: u64,
|
|
|
|
_length: u32,
|
|
|
|
) -> Result<gst::Buffer, gst::FlowReturn> {
|
|
|
|
// Keep a local copy of the values of all our properties at this very moment. This
|
|
|
|
// ensures that the mutex is never locked for long and the application wouldn't
|
|
|
|
// have to block until this function returns when getting/setting property values
|
|
|
|
let _settings = &*self.settings.lock().unwrap();
|
|
|
|
|
|
|
|
let mut pts2 = self.pts.lock().unwrap();
|
|
|
|
// Get a locked reference to our state, i.e. the input and output AudioInfo
|
|
|
|
let state = self.state.lock().unwrap();
|
|
|
|
let _info = match state.info {
|
|
|
|
None => {
|
|
|
|
gst_element_error!(element, gst::CoreError::Negotiation, ["Have no caps yet"]);
|
|
|
|
return Err(gst::FlowReturn::NotNegotiated);
|
|
|
|
}
|
|
|
|
Some(ref info) => info.clone(),
|
|
|
|
};
|
|
|
|
unsafe{
|
|
|
|
let recv = match ndi_struct.recv{
|
2018-05-31 09:16:29 +00:00
|
|
|
None => {
|
|
|
|
//TODO Update gst_element_error with one more descriptive
|
|
|
|
//println!("pNDI_recv no encontrado");
|
|
|
|
gst_element_error!(element, gst::CoreError::Negotiation, ["No encontramos ndi recv"]);
|
|
|
|
return Err(gst::FlowReturn::NotNegotiated);
|
2018-04-24 17:41:27 +00:00
|
|
|
}
|
2018-05-31 09:16:29 +00:00
|
|
|
Some(ref recv) => recv.clone(),
|
|
|
|
};
|
|
|
|
let pNDI_recv = recv.recv;
|
2018-06-26 12:07:43 +00:00
|
|
|
let pts: u64;
|
|
|
|
let audio_frame: NDIlib_audio_frame_v2_t = Default::default();
|
2018-06-25 08:38:45 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
NDIlib_recv_capture_v2(
|
|
|
|
pNDI_recv,
|
|
|
|
ptr::null(),
|
|
|
|
&audio_frame,
|
|
|
|
ptr::null(),
|
|
|
|
1000,
|
|
|
|
);
|
|
|
|
pts = ((audio_frame.timecode as u64) * 100) - pts2.pts;
|
|
|
|
let buff_size = ((audio_frame.channel_stride_in_bytes)) as usize;
|
|
|
|
let mut buffer = gst::Buffer::with_size(buff_size).unwrap();
|
|
|
|
{
|
|
|
|
let vec = Vec::from_raw_parts(audio_frame.p_data as *mut u8, buff_size, buff_size);
|
|
|
|
//TODO Set pts, duration and other info about the buffer
|
|
|
|
let pts: gst::ClockTime = (pts).into();
|
|
|
|
let duration: gst::ClockTime = (20154200).into();
|
|
|
|
let buffer = buffer.get_mut().unwrap();
|
|
|
|
buffer.set_pts(pts);
|
|
|
|
buffer.set_duration(duration);
|
|
|
|
buffer.set_offset(pts2.offset);
|
|
|
|
buffer.set_offset_end(pts2.offset + 1);
|
|
|
|
pts2.offset = pts2.offset +1;
|
|
|
|
buffer.copy_from_slice(0, &vec).unwrap();
|
2018-06-25 08:38:45 +00:00
|
|
|
}
|
2018-06-26 12:07:43 +00:00
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Produced buffer {:?}", buffer);
|
|
|
|
Ok(buffer)
|
2018-05-31 09:16:29 +00:00
|
|
|
}
|
2018-04-09 05:53:04 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
}
|
2018-04-09 05:53:04 +00:00
|
|
|
|
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
fn unlock(&self, element: &BaseSrc) -> bool {
|
|
|
|
// This should unblock the create() function ASAP, so we
|
|
|
|
// just unschedule the clock it here, if any.
|
|
|
|
gst_debug!(self.cat, obj: element, "Unlocking");
|
|
|
|
let mut clock_wait = self.clock_wait.lock().unwrap();
|
|
|
|
if let Some(clock_id) = clock_wait.clock_id.take() {
|
|
|
|
clock_id.unschedule();
|
2018-05-31 09:16:29 +00:00
|
|
|
}
|
2018-06-26 12:07:43 +00:00
|
|
|
clock_wait.flushing = true;
|
2018-04-09 05:53:04 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
true
|
2018-05-31 09:16:29 +00:00
|
|
|
}
|
2018-04-09 05:53:04 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
fn unlock_stop(&self, element: &BaseSrc) -> bool {
|
|
|
|
// This signals that unlocking is done, so we can reset
|
|
|
|
// all values again.
|
|
|
|
gst_debug!(self.cat, obj: element, "Unlock stop");
|
|
|
|
let mut clock_wait = self.clock_wait.lock().unwrap();
|
|
|
|
clock_wait.flushing = false;
|
2018-04-09 05:53:04 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
true
|
|
|
|
}
|
|
|
|
}
|
2018-04-09 05:53:04 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
// This zero-sized struct is containing the static metadata of our element. It is only necessary to
|
|
|
|
// be able to implement traits on it, but e.g. a plugin that registers multiple elements with the
|
|
|
|
// same code would use this struct to store information about the concrete element. An example of
|
|
|
|
// this would be a plugin that wraps around a library that has multiple decoders with the same API,
|
|
|
|
// but wants (as it should) a separate element registered for each decoder.
|
|
|
|
struct NdiAudioSrcStatic;
|
|
|
|
|
|
|
|
// The basic trait for registering the type: This returns a name for the type and registers the
|
|
|
|
// instance and class initializations functions with the type system, thus hooking everything
|
|
|
|
// together.
|
|
|
|
impl ImplTypeStatic<BaseSrc> for NdiAudioSrcStatic {
|
|
|
|
fn get_name(&self) -> &str {
|
|
|
|
"NdiAudioSrc"
|
|
|
|
}
|
|
|
|
|
|
|
|
fn new(&self, element: &BaseSrc) -> Box<BaseSrcImpl<BaseSrc>> {
|
|
|
|
NdiAudioSrc::new(element)
|
2018-05-31 09:16:29 +00:00
|
|
|
}
|
2018-04-09 05:53:04 +00:00
|
|
|
|
2018-06-26 12:07:43 +00:00
|
|
|
fn class_init(&self, klass: &mut BaseSrcClass) {
|
|
|
|
NdiAudioSrc::class_init(klass);
|
2018-05-31 09:16:29 +00:00
|
|
|
}
|
2018-06-26 12:07:43 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Registers the type for our element, and then registers in GStreamer under
|
|
|
|
// the name NdiAudioSrc for being able to instantiate it via e.g.
|
|
|
|
// gst::ElementFactory::make().
|
|
|
|
pub fn register(plugin: &gst::Plugin) {
|
|
|
|
let type_ = register_type(NdiAudioSrcStatic);
|
|
|
|
gst::Element::register(plugin, "ndiaudiosrc", 0, type_);
|
|
|
|
}
|