rtc-examples 0.8.0

Examples of WebRTC.rs stack with SansIO RTC API
Documentation 
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/* eslint-env browser */

// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
// SPDX-License-Identifier: MIT

// Create peer conn
const pc = new RTCPeerConnection({
    iceServers: [{
        urls: 'stun:stun.l.google.com:19302'
    }]
})

pc.oniceconnectionstatechange = (e) => {
    console.log('connection state change', pc.iceConnectionState)
}
pc.onicecandidate = (event) => {
    if (event.candidate === null) {
        document.getElementById('localSessionDescription').value = btoa(
            JSON.stringify(pc.localDescription)
        )
    }
}

pc.onnegotiationneeded = (e) =>
    pc
        .createOffer()
        .then((d) => pc.setLocalDescription(d))
        .catch(console.error)

pc.ontrack = (event) => {
    console.log('Got track event', event)
    const video = document.createElement('video')
    video.srcObject = event.streams[0]
    video.autoplay = true
    video.width = '500'
    const label = document.createElement('div')
    label.textContent = event.streams[0].id
    document.getElementById('serverVideos').appendChild(label)
    document.getElementById('serverVideos').appendChild(video)
}

navigator.mediaDevices
    .getUserMedia({
        video: {
            width: {
                ideal: 4096
            },
            height: {
                ideal: 2160
            },
            frameRate: {
                ideal: 60,
                min: 10
            }
        },
        audio: false
    })
    .then((stream) => {
        document.getElementById('browserVideo').srcObject = stream
        pc.addTransceiver(stream.getVideoTracks()[0], {
            direction: 'sendrecv',
            streams: [stream],
            sendEncodings: [
                // for firefox order matters... first high resolution, then scaled resolutions...
                {
                    rid: 'f'
                },
                {
                    rid: 'h',
                    scaleResolutionDownBy: 2.0
                },
                {
                    rid: 'q',
                    scaleResolutionDownBy: 4.0
                }
            ]
        })
    })

window.startSession = () => {
    const sd = document.getElementById('remoteSessionDescription').value
    if (sd === '') {
        return alert('Session Description must not be empty')
    }

    try {
        console.log('answer', JSON.parse(atob(sd)))
        pc.setRemoteDescription(JSON.parse(atob(sd)))
    } catch (e) {
        alert(e)
    }
}

window.copySDP = () => {
    const browserSDP = document.getElementById('localSessionDescription')

    browserSDP.focus()
    browserSDP.select()

    try {
        const successful = document.execCommand('copy')
        const msg = successful ? 'successful' : 'unsuccessful'
        console.log('Copying SDP was ' + msg)
    } catch (err) {
        console.log('Unable to copy SDP ' + err)
    }
}