golanggohlsrtmpwebrtcmedia-serverobs-studiortcprtmp-proxyrtmp-serverrtprtsprtsp-proxyrtsp-relayrtsp-serversrtstreamingwebrtc-proxy
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736 lines
17 KiB
736 lines
17 KiB
<!DOCTYPE html> |
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<html> |
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<head> |
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<meta charset="utf-8"> |
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<meta name="viewport" content="width=device-width"> |
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<style> |
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html, body { |
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margin: 0; |
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padding: 0; |
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height: 100%; |
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font-family: 'Arial', sans-serif; |
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} |
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#video { |
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position: absolute; |
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top: 0; |
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left: 0; |
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width: 100%; |
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height: 100%; |
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background: rgb(30, 30, 30); |
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} |
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#controls { |
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display: none; |
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flex-shrink: 0; |
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align-items: center; |
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justify-content: center; |
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padding: 10px; |
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flex-direction: column; |
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min-height: 100%; |
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width: 100%; |
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box-sizing: border-box; |
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background: rgb(30, 30, 30); |
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color: white; |
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} |
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.item { |
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display: grid; |
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grid-auto-flow: column; |
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grid-template-columns: auto 220px; |
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align-items: center; |
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gap: 20px; |
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max-width: 500px; |
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margin: 10px 0; |
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} |
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select, input[type="text"] { |
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appearance: none; |
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background: inherit; |
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color: inherit; |
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border: 1px solid rgb(200, 200, 200); |
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border-radius: 3px; |
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height: 40px; |
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} |
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#message { |
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position: absolute; |
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left: 0; |
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top: 0; |
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width: 100%; |
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height: 100%; |
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display: flex; |
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align-items: center; |
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text-align: center; |
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justify-content: center; |
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font-size: 16px; |
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font-weight: bold; |
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color: white; |
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pointer-events: none; |
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padding: 20px; |
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box-sizing: border-box; |
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text-shadow: 0 0 5px black; |
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} |
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#publish-button { |
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margin-top: 10px; |
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appearance: none; |
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background: rgb(200, 200, 200); |
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color: black; |
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border-radius: 3px; |
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height: 50px; |
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padding: 0 20px; |
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border: none; |
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} |
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</style> |
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</head> |
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<body> |
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|
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<video id="video" muted autoplay playsinline></video> |
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|
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<div id="controls"> |
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<div id="items"> |
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<div class="item"> |
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<label for="video-device">video device</label> |
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<select id="video-device"> |
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<option value="none">none</option> |
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</select> |
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</div> |
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|
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<div class="item"> |
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<label for="video-codec">video codec</label> |
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<select id="video-codec"> |
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</select> |
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</div> |
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|
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<div class="item"> |
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<label for="video-bitrate">video bitrate (kbps)</label> |
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<input id="video-bitrate" type="text" value="10000" /> |
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</div> |
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|
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<div class="item"> |
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<label for="video-framerate">video framerate</label> |
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<input id="video-framerate" type="text" value="30" /> |
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</div> |
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|
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<div class="item"> |
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<label for="video-width">video width</label> |
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<input id="video-width" type="text" value="1920" /> |
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</div> |
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|
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<div class="item"> |
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<label for="video-height">video height</label> |
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<input id="video-height" type="text" value="1080" /> |
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</div> |
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|
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<div class="item"> |
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<label for="audio-device">audio device</label> |
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<select id="audio-device"> |
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<option value="none">none</option> |
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</select> |
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</div> |
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|
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<div class="item"> |
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<label for="audio-codec">audio codec</label> |
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<select id="audio-codec"> |
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</select> |
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</div> |
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|
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<div class="item"> |
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<label for="audio-bitrate">audio bitrate (kbps)</label> |
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<input id="audio-bitrate" type="text" value="32" /> |
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</div> |
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|
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<div class="item"> |
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<label for="audio-voice">optimize for voice</label> |
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<div> |
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<input id="audio-voice" type="checkbox" checked> |
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</div> |
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</div> |
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</div> |
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|
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<div id="submit-line"> |
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<button id="publish-button">publish</button> |
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</div> |
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</div> |
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|
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<div id="message"></div> |
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|
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<script> |
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|
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const retryPause = 2000; |
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|
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const video = document.getElementById('video'); |
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const controls = document.getElementById('controls'); |
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const message = document.getElementById('message'); |
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const publishButton = document.getElementById('publish-button'); |
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|
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const videoForm = { |
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device: document.getElementById('video-device'), |
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codec: document.getElementById('video-codec'), |
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bitrate: document.getElementById('video-bitrate'), |
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framerate: document.getElementById('video-framerate'), |
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width: document.getElementById('video-width'), |
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height: document.getElementById('video-height') |
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}; |
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|
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const audioForm = { |
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device: document.getElementById('audio-device'), |
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codec: document.getElementById('audio-codec'), |
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bitrate: document.getElementById('audio-bitrate'), |
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voice: document.getElementById('audio-voice'), |
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}; |
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|
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let pc = null; |
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let stream = null; |
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let restartTimeout = null; |
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let sessionUrl = ''; |
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let offerData = ''; |
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let queuedCandidates = []; |
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|
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const setMessage = (str) => { |
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message.innerText = str; |
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}; |
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|
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const onError = (err, retry) => { |
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if (!retry) { |
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setMessage(err); |
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} else { |
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if (restartTimeout === null) { |
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setMessage(err + ', retrying in some seconds'); |
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|
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if (pc !== null) { |
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pc.close(); |
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pc = null; |
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} |
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|
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restartTimeout = window.setTimeout(() => { |
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restartTimeout = null; |
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startTransmit(); |
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}, retryPause); |
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|
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if (sessionUrl) { |
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fetch(sessionUrl, { |
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method: 'DELETE', |
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}); |
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} |
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sessionUrl = ''; |
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|
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queuedCandidates = []; |
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} |
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} |
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}; |
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|
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const unquoteCredential = (v) => ( |
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JSON.parse(`"${v}"`) |
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); |
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|
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const linkToIceServers = (links) => ( |
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(links !== null) ? links.split(', ').map((link) => { |
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const m = link.match(/^<(.+?)>; rel="ice-server"(; username="(.*?)"; credential="(.*?)"; credential-type="password")?/i); |
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const ret = { |
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urls: [m[1]], |
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}; |
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if (m[3] !== undefined) { |
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ret.username = unquoteCredential(m[3]); |
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ret.credential = unquoteCredential(m[4]); |
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ret.credentialType = 'password'; |
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} |
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return ret; |
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}) : [] |
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); |
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|
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const parseOffer = (offer) => { |
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const ret = { |
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iceUfrag: '', |
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icePwd: '', |
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medias: [], |
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}; |
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|
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for (const line of offer.split('\r\n')) { |
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if (line.startsWith('m=')) { |
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ret.medias.push(line.slice('m='.length)); |
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} else if (ret.iceUfrag === '' && line.startsWith('a=ice-ufrag:')) { |
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ret.iceUfrag = line.slice('a=ice-ufrag:'.length); |
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} else if (ret.icePwd === '' && line.startsWith('a=ice-pwd:')) { |
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ret.icePwd = line.slice('a=ice-pwd:'.length); |
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} |
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} |
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return ret; |
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}; |
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const generateSdpFragment = (od, candidates) => { |
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const candidatesByMedia = {}; |
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for (const candidate of candidates) { |
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const mid = candidate.sdpMLineIndex; |
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if (candidatesByMedia[mid] === undefined) { |
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candidatesByMedia[mid] = []; |
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} |
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candidatesByMedia[mid].push(candidate); |
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} |
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let frag = 'a=ice-ufrag:' + od.iceUfrag + '\r\n' |
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+ 'a=ice-pwd:' + od.icePwd + '\r\n'; |
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let mid = 0; |
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for (const media of od.medias) { |
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if (candidatesByMedia[mid] !== undefined) { |
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frag += 'm=' + media + '\r\n' |
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+ 'a=mid:' + mid + '\r\n'; |
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|
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for (const candidate of candidatesByMedia[mid]) { |
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frag += 'a=' + candidate.candidate + '\r\n'; |
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} |
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} |
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mid++; |
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} |
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return frag; |
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}; |
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|
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const setCodec = (section, codec) => { |
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const lines = section.split('\r\n'); |
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const lines2 = []; |
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const payloadFormats = []; |
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|
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for (const line of lines) { |
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if (!line.startsWith('a=rtpmap:')) { |
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lines2.push(line); |
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} else { |
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if (line.toLowerCase().includes(codec)) { |
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payloadFormats.push(line.slice('a=rtpmap:'.length).split(' ')[0]); |
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lines2.push(line); |
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} |
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} |
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} |
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const lines3 = []; |
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for (const line of lines2) { |
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if (line.startsWith('a=fmtp:')) { |
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if (payloadFormats.includes(line.slice('a=fmtp:'.length).split(' ')[0])) { |
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lines3.push(line); |
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} |
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} else if (line.startsWith('a=rtcp-fb:')) { |
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if (payloadFormats.includes(line.slice('a=rtcp-fb:'.length).split(' ')[0])) { |
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lines3.push(line); |
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} |
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} else { |
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lines3.push(line); |
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} |
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} |
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|
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return lines3.join('\r\n'); |
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}; |
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const setVideoBitrate = (section, bitrate) => { |
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let lines = section.split('\r\n'); |
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for (let i = 0; i < lines.length; i++) { |
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if (lines[i].startsWith('c=')) { |
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lines = [...lines.slice(0, i+1), 'b=TIAS:' + (parseInt(bitrate) * 1024).toString(), ...lines.slice(i+1)]; |
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break |
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} |
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} |
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return lines.join('\r\n'); |
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}; |
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const setAudioBitrate = (section, bitrate, voice) => { |
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let opusPayloadFormat = ''; |
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let lines = section.split('\r\n'); |
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for (let i = 0; i < lines.length; i++) { |
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if (lines[i].startsWith('a=rtpmap:') && lines[i].toLowerCase().includes('opus/')) { |
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opusPayloadFormat = lines[i].slice('a=rtpmap:'.length).split(' ')[0]; |
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break; |
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} |
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} |
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|
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if (opusPayloadFormat === '') { |
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return section; |
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} |
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for (let i = 0; i < lines.length; i++) { |
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if (lines[i].startsWith('a=fmtp:' + opusPayloadFormat + ' ')) { |
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if (voice) { |
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lines[i] = 'a=fmtp:' + opusPayloadFormat + ' minptime=10;useinbandfec=1;maxaveragebitrate=' |
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+ (parseInt(bitrate) * 1024).toString(); |
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} else { |
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lines[i] = 'a=fmtp:' + opusPayloadFormat + ' maxplaybackrate=48000;stereo=1;sprop-stereo=1;maxaveragebitrate' |
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+ (parseInt(bitrate) * 1024).toString(); |
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} |
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} |
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} |
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return lines.join('\r\n'); |
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}; |
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|
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const editAnswer = (sdp, videoCodec, audioCodec, videoBitrate, audioBitrate, audioVoice) => { |
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const sections = sdp.split('m='); |
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|
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for (let i = 0; i < sections.length; i++) { |
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const section = sections[i]; |
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if (section.startsWith('video')) { |
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sections[i] = setVideoBitrate(setCodec(section, videoCodec), videoBitrate); |
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} else if (section.startsWith('audio')) { |
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sections[i] = setAudioBitrate(setCodec(section, audioCodec), audioBitrate, audioVoice); |
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} |
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} |
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|
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return sections.join('m='); |
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}; |
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|
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const sendLocalCandidates = (candidates) => { |
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fetch(sessionUrl + window.location.search, { |
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method: 'PATCH', |
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headers: { |
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'Content-Type': 'application/trickle-ice-sdpfrag', |
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'If-Match': '*', |
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}, |
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body: generateSdpFragment(offerData, candidates), |
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}) |
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.then((res) => { |
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if (res.status !== 204) { |
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throw new Error('bad status code'); |
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} |
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}) |
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.catch((err) => { |
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onError(err.toString(), true); |
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}); |
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}; |
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|
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const onLocalCandidate = (evt) => { |
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if (restartTimeout !== null) { |
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return; |
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} |
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|
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if (evt.candidate !== null) { |
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if (sessionUrl === '') { |
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queuedCandidates.push(evt.candidate); |
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} else { |
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sendLocalCandidates([evt.candidate]) |
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} |
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} |
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}; |
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|
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const onRemoteAnswer = (sdp) => { |
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if (restartTimeout !== null) { |
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return; |
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} |
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|
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sdp = editAnswer( |
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sdp, |
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videoForm.codec.value, |
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audioForm.codec.value, |
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videoForm.bitrate.value, |
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audioForm.bitrate.value, |
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audioForm.voice.checked, |
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); |
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|
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pc.setRemoteDescription(new RTCSessionDescription({ |
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type: 'answer', |
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sdp, |
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})); |
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|
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if (queuedCandidates.length !== 0) { |
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sendLocalCandidates(queuedCandidates); |
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queuedCandidates = []; |
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} |
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}; |
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|
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const sendOffer = (offer) => { |
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fetch(new URL('whip', window.location.href) + window.location.search, { |
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method: 'POST', |
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headers: { |
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'Content-Type': 'application/sdp', |
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}, |
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body: offer.sdp, |
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}) |
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.then((res) => { |
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if (res.status !== 201) { |
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throw new Error('bad status code'); |
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} |
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sessionUrl = new URL(res.headers.get('location'), window.location.href).toString(); |
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return res.text(); |
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}) |
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.then((sdp) => onRemoteAnswer(sdp)) |
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.catch((err) => { |
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onError(err.toString(), true); |
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}); |
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}; |
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|
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const createOffer = () => { |
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pc.createOffer() |
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.then((offer) => { |
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offerData = parseOffer(offer.sdp); |
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pc.setLocalDescription(offer); |
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sendOffer(offer); |
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}); |
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}; |
|
|
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const onConnectionState = () => { |
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if (restartTimeout !== null) { |
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return; |
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} |
|
|
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if (pc.iceConnectionState === 'disconnected') { |
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onError('peer connection disconnected', true); |
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} else if (pc.iceConnectionState === 'connected') { |
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setMessage(''); |
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} |
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}; |
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|
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const requestICEServers = () => { |
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fetch(new URL('whip', window.location.href) + window.location.search, { |
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method: 'OPTIONS', |
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}) |
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.then((res) => { |
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pc = new RTCPeerConnection({ |
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iceServers: linkToIceServers(res.headers.get('Link')), |
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// https://webrtc.org/getting-started/unified-plan-transition-guide |
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sdpSemantics: 'unified-plan', |
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}); |
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|
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pc.onicecandidate = (evt) => onLocalCandidate(evt); |
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pc.oniceconnectionstatechange = () => onConnectionState(); |
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|
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stream.getTracks().forEach((track) => { |
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pc.addTrack(track, stream); |
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}); |
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|
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createOffer(); |
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}) |
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.catch((err) => { |
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onError(err.toString(), true); |
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}); |
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}; |
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|
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const startTransmit = () => { |
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requestICEServers(); |
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}; |
|
|
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const onPublish = () => { |
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controls.style.display = 'none'; |
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video.style.display = 'block'; |
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setMessage('connecting'); |
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|
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const videoId = videoForm.device.value; |
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const audioId = audioForm.device.value; |
|
|
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if (videoId !== 'screen') { |
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let videoOpts = false; |
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|
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if (videoId !== 'none') { |
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videoOpts = { |
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deviceId: videoId, |
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}; |
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} |
|
|
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let audioOpts = false; |
|
|
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if (audioId !== 'none') { |
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audioOpts = { |
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deviceId: audioId, |
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}; |
|
|
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const voice = audioForm.voice.checked; |
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if (!voice) { |
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audioOpts.autoGainControl = false; |
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audioOpts.echoCancellation = false; |
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audioOpts.noiseSuppression = false; |
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} |
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} |
|
|
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navigator.mediaDevices.getUserMedia({ |
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video: videoOpts, |
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audio: audioOpts, |
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}) |
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.then((str) => { |
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stream = str; |
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video.srcObject = stream; |
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startTransmit(); |
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}) |
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.catch((err) => { |
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onError(err.toString(), false); |
|
}); |
|
} else { |
|
navigator.mediaDevices.getDisplayMedia({ |
|
video: { |
|
width: { ideal: videoForm.width.value }, |
|
height: { ideal: videoForm.height.value }, |
|
frameRate: { ideal: videoForm.framerate.value }, |
|
cursor: 'always', |
|
}, |
|
audio: true, |
|
}) |
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.then((str) => { |
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stream = str; |
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video.srcObject = stream; |
|
startTransmit(); |
|
}) |
|
.catch((err) => { |
|
onError(err.toString(), false); |
|
}); |
|
} |
|
}; |
|
|
|
const populateDevices = () => { |
|
return navigator.mediaDevices.enumerateDevices() |
|
.then((devices) => { |
|
for (const device of devices) { |
|
switch (device.kind) { |
|
case 'videoinput': |
|
{ |
|
const opt = document.createElement('option'); |
|
opt.value = device.deviceId; |
|
opt.text = device.label; |
|
videoForm.device.appendChild(opt); |
|
} |
|
break; |
|
|
|
case 'audioinput': |
|
{ |
|
const opt = document.createElement('option'); |
|
opt.value = device.deviceId; |
|
opt.text = device.label; |
|
audioForm.device.appendChild(opt); |
|
} |
|
break; |
|
} |
|
} |
|
|
|
if (navigator.mediaDevices.getDisplayMedia !== undefined) { |
|
const opt = document.createElement('option'); |
|
opt.value = 'screen'; |
|
opt.text = 'screen'; |
|
videoForm.device.appendChild(opt); |
|
} |
|
|
|
if (videoForm.device.children.length !== 0) { |
|
videoForm.device.value = videoForm.device.children[1].value; |
|
} |
|
|
|
if (audioForm.device.children.length !== 0) { |
|
audioForm.device.value = audioForm.device.children[1].value; |
|
} |
|
}); |
|
}; |
|
|
|
const populateCodecs = () => { |
|
const tempPC = new RTCPeerConnection({}); |
|
tempPC.addTransceiver('video', { direction: 'sendonly' }); |
|
tempPC.addTransceiver('audio', { direction: 'sendonly' }); |
|
|
|
return tempPC.createOffer() |
|
.then((desc) => { |
|
const sdp = desc.sdp.toLowerCase(); |
|
|
|
for (const codec of ['av1/90000', 'vp9/90000', 'vp8/90000', 'h264/90000']) { |
|
if (sdp.includes(codec)) { |
|
const opt = document.createElement('option'); |
|
opt.value = codec; |
|
opt.text = codec.split('/')[0].toUpperCase(); |
|
videoForm.codec.appendChild(opt); |
|
} |
|
} |
|
|
|
for (const codec of ['opus/48000', 'g722/8000', 'pcmu/8000', 'pcma/8000']) { |
|
if (sdp.includes(codec)) { |
|
const opt = document.createElement('option'); |
|
opt.value = codec; |
|
opt.text = codec.split('/')[0].toUpperCase(); |
|
audioForm.codec.appendChild(opt); |
|
} |
|
} |
|
|
|
tempPC.close(); |
|
}); |
|
}; |
|
|
|
const populateOptions = () => { |
|
setMessage('loading devices'); |
|
|
|
navigator.mediaDevices.getUserMedia({ video: true, audio: true }) |
|
.then((tempStream) => { |
|
return Promise.all([ |
|
populateDevices(), |
|
populateCodecs(), |
|
]) |
|
.then(() => { |
|
// free the webcam to prevent 'NotReadableError' on Android |
|
tempStream.getTracks() |
|
.forEach((track) => track.stop()); |
|
|
|
setMessage(''); |
|
video.style.display = 'none'; |
|
controls.style.display = 'flex'; |
|
}); |
|
}) |
|
.catch((err) => { |
|
onError(err.toString(), false); |
|
}); |
|
}; |
|
|
|
const updateQueryOnControls = () => { |
|
const url = new URL(window.location.href); |
|
const inputs = [...Object.values(videoForm), ...Object.values(audioForm)] |
|
|
|
for (const input of inputs) { |
|
if (input instanceof HTMLInputElement && input.type === 'text') { |
|
input.addEventListener('input', () => { |
|
url.searchParams.set(input.id, input.value); |
|
window.history.replaceState(null, null, url); |
|
}) |
|
} |
|
|
|
if (input instanceof HTMLInputElement && input.type === 'checkbox') { |
|
input.addEventListener('input', () => { |
|
url.searchParams.set(input.id, input.checked); |
|
window.history.replaceState(null, null, url); |
|
}) |
|
} |
|
|
|
if (input instanceof HTMLSelectElement) { |
|
input.addEventListener('input', () => { |
|
url.searchParams.set(input.id, input.value); |
|
window.history.replaceState(null, null, url); |
|
}) |
|
} |
|
} |
|
}; |
|
|
|
const loadControlsFromQuery = () => { |
|
const params = new URLSearchParams(window.location.search); |
|
const inputs = [...Object.values(videoForm), ...Object.values(audioForm)] |
|
|
|
for (const input of inputs) { |
|
const value = params.get(input.id); |
|
if (value) { |
|
if (input instanceof HTMLInputElement && input.type === 'text') { |
|
input.value = value; |
|
} else if (input instanceof HTMLInputElement && input.type === 'checkbox') { |
|
input.checked = value === 'true'; |
|
} else if (input instanceof HTMLSelectElement) { |
|
input.value = value |
|
} |
|
} |
|
} |
|
}; |
|
|
|
const init = () => { |
|
if (navigator.mediaDevices === undefined) { |
|
onError(`can't access webcams or microphones. Make sure that WebRTC encryption is enabled.`, false); |
|
return; |
|
} |
|
|
|
loadControlsFromQuery(); |
|
updateQueryOnControls(); |
|
publishButton.addEventListener('click', onPublish); |
|
populateOptions(); |
|
}; |
|
|
|
window.addEventListener('DOMContentLoaded', init); |
|
|
|
</script> |
|
|
|
</body> |
|
</html>
|
|
|