1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162

use crate::utils::capturer;
use crate::utils::common::Credentials;

use crate::audio_device::{AudioDevice, AudioDeviceSettings};
use crate::publisher::{Publisher as OpenTokPublisher, PublisherCallbacks};
use crate::session::{Session, SessionCallbacks};
use crate::video_capturer::{VideoCapturer, VideoCapturerCallbacks, VideoCapturerSettings};
use crate::video_frame::VideoFrame;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::{Arc, Mutex};
use std::thread;

type Callback = Box<dyn Fn(&Publisher, String) + Send + Sync + 'static>;

#[derive(Clone)]
pub struct Publisher {
    credentials: Credentials,
    main_loop: glib::MainLoop,
    on_stream_created: Arc<Mutex<Option<Callback>>>,
    duration: Option<u64>,
}

impl Publisher {
    pub fn new(
        credentials: Credentials,
        on_stream_created: Option<Callback>,
        duration: Option<u64>,
    ) -> Self {
        Self {
            credentials,
            main_loop: glib::MainLoop::new(None, false),
            on_stream_created: Arc::new(Mutex::new(on_stream_created)),
            duration,
        }
    }

    pub fn run(&self) -> anyhow::Result<()> {
        let audio_capture_thread_running = Arc::new(AtomicBool::new(true));
        let audio_capture_thread_running_ = audio_capture_thread_running.clone();

        let audio_device = AudioDevice::get_instance();

        thread::spawn(move || {
            let audio_capturer =
                capturer::AudioCapturer::new(&AudioDeviceSettings::default()).unwrap();
            loop {
                if !audio_capture_thread_running.load(Ordering::Relaxed) {
                    break;
                }
                if let Some(sample) = audio_capturer.pull_buffer() {
                    audio_device.lock().unwrap().push_audio_sample(sample);
                }
                thread::sleep(std::time::Duration::from_micros(10000));
            }
        });

        let render_thread_running = Arc::new(AtomicBool::new(false));
        let render_thread_running_ = render_thread_running.clone();
        let render_thread_running__ = render_thread_running.clone();
        let video_capturer_callbacks = VideoCapturerCallbacks::builder()
            .start(move |video_capturer| {
                let video_capturer = video_capturer.clone();
                render_thread_running.store(true, Ordering::Relaxed);
                let render_thread_running_ = render_thread_running.clone();
                std::thread::spawn(move || {
                    let settings = VideoCapturerSettings::default();
                    let capturer = capturer::Capturer::new(&settings).unwrap();
                    let mut buf: Vec<u8> = vec![];
                    loop {
                        if !render_thread_running_.load(Ordering::Relaxed) {
                            break;
                        }
                        if let Ok(buffer) = capturer.pull_buffer() {
                            buf.extend_from_slice((*buffer).as_ref());
                            let frame = VideoFrame::new(
                                settings.format,
                                settings.width,
                                settings.height,
                                buf.clone(),
                            );
                            video_capturer.provide_frame(0, &frame).unwrap();
                            buf.clear();
                        }
                        std::thread::sleep(std::time::Duration::from_micros(30 * 1_000));
                    }
                });
                Ok(())
            })
            .stop(move |_| {
                render_thread_running_.store(false, Ordering::Relaxed);
                Ok(())
            })
            .build();
        let video_capturer = VideoCapturer::new(Default::default(), video_capturer_callbacks);

        let on_stream_created = self.on_stream_created.clone();
        let this = self.clone();
        let publisher_callbacks = PublisherCallbacks::builder()
            .on_stream_created(move |_, stream| {
                println!("Publishing stream with ID {}", stream.id());
                println!(
                    "opentok url opentok://{}/{}?key={}&token={}",
                    this.credentials.session_id,
                    stream.id(),
                    this.credentials.api_key,
                    this.credentials.token
                );

                if let Some(ref callback) = *on_stream_created.lock().unwrap() {
                    callback(&this, stream.id());
                }
            })
            .on_error(|_, error, _| {
                println!("on_error {:?}", error);
            })
            .build();
        let publisher = Arc::new(Mutex::new(OpenTokPublisher::new(
            "publisher",
            Some(video_capturer),
            publisher_callbacks,
        )));

        let publisher_ = publisher.clone();
        let session_callbacks = SessionCallbacks::builder()
            .on_connected(move |session| {
                let _ = session.publish(&*publisher_.lock().unwrap());
            })
            .on_error(|_, error, _| {
                eprintln!("on_error {:?}", error);
            })
            .build();
        let session = Session::new(
            &self.credentials.api_key,
            &self.credentials.session_id,
            session_callbacks,
        )?;
        session.connect(&self.credentials.token)?;

        if let Some(duration) = self.duration {
            let main_loop = self.main_loop.clone();
            std::thread::spawn(move || {
                std::thread::sleep(std::time::Duration::from_secs(duration));
                main_loop.quit();
            });
        }

        self.main_loop.run();

        audio_capture_thread_running_.store(false, Ordering::Relaxed);
        render_thread_running__.store(false, Ordering::Relaxed);

        publisher.lock().unwrap().unpublish().unwrap();

        session.disconnect().unwrap();

        Ok(())
    }

    pub fn stop(&self) {
        self.main_loop.quit();
    }
}