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13
.babelrc
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{
"presets": [
[
"es2015",
{
"modules": false
}
]
],
"plugins": [
"external-helpers"
]
}

33
.eslintrc.json
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{
"env": {
"browser": true,
"es6": true
},
"globals": {
"ENV": true
},
"extends": "eslint:recommended",
"parserOptions": {
"sourceType": "module"
},
"rules": {
"indent": [
"error",
4,
{ "SwitchCase": 1 }
],
"no-unused-vars": "off",
"linebreak-style": [
"error",
"unix"
],
"quotes": [
"error",
"single"
],
"semi": [
"error",
"always"
]
}
}

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.gitignore vendored
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# Created by https://www.gitignore.io/api/node
### Node ###
# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# Runtime data
pids
*.pid
*.seed
*.pid.lock
# Directory for instrumented libs generated by jscoverage/JSCover
lib-cov
# Coverage directory used by tools like istanbul
coverage
# nyc test coverage
.nyc_output
# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
.grunt
# Bower dependency directory (https://bower.io/)
bower_components
# node-waf configuration
.lock-wscript
# Compiled binary addons (http://nodejs.org/api/addons.html)
build/Release
# Dependency directories
node_modules/
jspm_packages/
# Typescript v1 declaration files
typings/
# Optional npm cache directory
.npm
# Optional eslint cache
.eslintcache
# Optional REPL history
.node_repl_history
# Output of 'npm pack'
*.tgz
# Yarn Integrity file
.yarn-integrity
# dotenv environment variables file
.env
# End of https://www.gitignore.io/api/node
dist/

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.npmignore
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dist
node_modules
example/player.js

221
LICENSE
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Apache License
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Copyright (c) 2015
Gornostaev Alexey <kreopt@gmail.com>
Victor Grenke <viktor.grenke@gmail.com>
Igor Shakirov <igor.shakirov@gmail.com>
SpecForge <specforge@gmail.com>
Streamedian <streamedian.player@gmail.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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8
README.md
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git clone git@gitlab.ipvisionsoft.com:ipvision-web/liveplayer.git
cd liveplayer
npm run build
npm run start

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index_old.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>live player </title>
</head>
<body>
<div id="container" style="width: 400px; margin: 0 auto;">
</div>
<script>
var pl;
function getParameterByName(name, url) {
if (!url) {
url = window.location.href;
}
name = name.replace(/[\[\]]/g, "\\$&");
var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
results = regex.exec(url);
if (!results)
return null;
if (!results[2])
return '';
return decodeURIComponent(results[2].replace(/\+/g, " "));
}
window.onload = function() {
var id = getParameterByName('id'),
type = getParameterByName('type') || 'live';
pl = new RingPlayer.LivePlayer('container', 'wss://devlive.ringid.com/live/'+id, type);
}
</script>
<script type="text/javascript" src="dist/player.min.js"></script>
</body>
</html>

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libopus/opus.min.js vendored
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package.json
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{
"name": "ring-live-player",
"version": "0.1.0",
"description": "ringID channel and liver player based on MSE",
"main": "dist/player.min.js",
"scripts": {
"build": "rollup -c",
"dev": "rollup -c --watch",
"prod": "NODE_ENV=production rollup -c",
"reload": "livereload 'dist/'",
"watch": "npm-run-all --parallel reload dev",
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "git@gitlab.ipvisionsoft.com:ipvision-web/liveplayer.git"
},
"author": "ringID web",
"devDependencies": {
"babel-plugin-external-helpers": "^6.22.0",
"babel-preset-es2015": "^6.24.1",
"emitter": "0.0.5",
"livereload": "^0.6.0",
"npm-run-all": "^3.1.2",
"path": "^0.12.7",
"rollup": "^0.39.0",
"rollup-plugin-babel": "^2.7.1",
"rollup-plugin-commonjs": "^7.1.0",
"rollup-plugin-eslint": "^3.0.0",
"rollup-plugin-node-resolve": "^2.1.1",
"rollup-plugin-replace": "^1.1.1",
"rollup-plugin-uglify": "^1.0.1",
"rollup-watch": "^3.0.0",
"stream": "0.0.2"
},
"dependencies": {
"libopus.js": "0.0.1"
}
}

57
pcm-player.js
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class PCMPlayer {
constructor() {
this.audioStartTime = 0;
this.samples = [];
this.sampleRate = 8000;
this.channels = 1;
this.flushingTime = 200;
this.createContext();
this.startFlushing();
this.flush = this.flush.bind(this);
this.interval = setInterval(this.flush, this.flushingTime);
}
createContext() {
this.audioCtx = new (window.AudioContext || window.webkitAudioContext)();
this.gainNode = this.audioCtx.createGain();
this.gainNode.gain.value = 1;
this.gainNode.connect(this.audioCtx.destination);
}
stopFlushing() {
if (this.interval) {
clearInterval(this.interval);
}
}
feed(data) {
let tmp = new Float32Array(this.samples.length + data.length);
tmp.set(this.samples, 0);
tmp.set(data, this.samples.length);
this.samples = tmp;
}
flush() {
let bufferSource = this.audioCtx.createBufferSource(),
length = this.samples.length,
audioBuffer = this.audioCtx.createBuffer(this.channels, length, this.sampleRate),
audioData,
channel,
offset,
i;
for (channel = 0; channel < this.channels; channel++) {
audioData = audioBuffer.getChannelData(channel);
offset = channel;
for (i = 0; i < length; i++) {
audioData[i] = this.samples[offset];
offset += this.channels;
}
}
bufferSource.buffer = audioBuffer;
bufferSource.connect(this.gainNode);
bufferSource.start();
this.samples = [];
}
}

31
rollup.config.js
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/* global process */
// Rollup plugins
import babel from 'rollup-plugin-babel';
import eslint from 'rollup-plugin-eslint';
import replace from 'rollup-plugin-replace';
import uglify from 'rollup-plugin-uglify';
export default {
entry: 'src/player.js',
dest: 'dist/player.min.js',
format: 'iife',
moduleName: 'RingPlayer',
sourceMap: false, //inline
plugins: [
eslint({
exclude: [
'src/styles/**',
]
}),
babel({
exclude: 'node_modules/**',
}),
replace({
exclude: 'node_modules/**',
ENV: JSON.stringify(process.env.NODE_ENV || 'development'),
}),
(process.env.NODE_ENV === 'production' && uglify()),
],
};

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src/libopus/opus.min.js vendored
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35
src/opus-to-pcm.js
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import { appendByteArray } from '../utils/utils.js';
import Ogg from '../utils/ogg.js';
import OpusWorker from '../utils/opus-worker.js';
export default class OpusToPCM {
constructor(options) {
window.MediaSource = window.MediaSource || window.WebKitMediaSource;
let nativeSupport = !!(window.MediaSource && window.MediaSource.isTypeSupported('audio/webm; codecs=opus'));
let defaults = {
orgSampleRate : 8000,
channels: 1,
fallback: true
};
options = Object.assign({}, defaults, options);
if (nativeSupport) {
this.decoder = new Ogg(options.orgSampleRate, options.channels);
} else if(options.fallback) {
this.decoder = new OpusWorker(options.channels)
} else {
this.decoder = null;
}
}
decode(packet) {
if (!this.decoder) {
throw ('opps! no decoder is found to decode');
}
return this.decoder.decode(packet);
}
destroy() {
this.decoder.destroy();
}
}

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src/utils/ogg.js
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import { appendByteArray } from './utils.js';
export default class Ogg {
constructor(orgSampleRate, channel) {
this.orgSampleRate = orgSampleRate;
this.channel = channel;
this.audioCtx = new (window.AudioContext || window.webkitAudioContext)();
this.init();
}
init() {
this.pageIndex = 0;
this.serial = Math.floor(Math.random() * Math.pow(2,32));
this.initChecksumTable();
let idHeader = this.getIDHeader();
let commentHeader = this.getCommentHeader();
let idPage = this.getPage(idHeader, 2); // headerType of ID header is 2 i.e beginning of stream
let commentPage = this.getPage(commentHeader, 0); // headerType of comment header is 0
this.oggHeader = appendByteArray(idPage, commentPage);
}
getIDHeader() {
let data = new Uint8Array(19),
dv = new DataView(data.buffer);
dv.setUint32( 0, 1937076303, true ); // Magic Signature 'Opus'
dv.setUint32( 4, 1684104520, true ); // Magic Signature 'Head'
dv.setUint8( 8, 1, true ); // Version
dv.setUint8( 9, this.channel, true ); // Channel count
dv.setUint16( 10, 0, true ); // pre-skip, don't need to skip any value
dv.setUint32( 12, this.orgSampleRate, true ); // original sample rate
dv.setUint16( 16, 0, true ); // output gain
dv.setUint8( 18, 0, true ); // channel map 0 = mono or stereo
return data;
}
getCommentHeader() {
let data = new Uint8Array(24),
dv = new DataView(data.buffer);
dv.setUint32( 0, 1937076303, true ); // Magic Signature 'Opus'
dv.setUint32( 4, 1936154964, true ); // Magic Signature 'Tags'
dv.setUint32( 8, 8, true ); // Vendor Length
dv.setUint32( 12, 1919512167, true ); // Vendor name 'ring'
dv.setUint32( 16, 1818850917, true ); // Vendor name 'live'
dv.setUint32( 20, 0, true ); // User Comment List Length
return data;
}
getPage(segmentData, headerType) {
/* ref: https://tools.ietf.org/id/draft-ietf-codec-oggopus-00.html */
let segmentTable = new Uint8Array(1); /* segment table stores segment length map. always providing one single segment */
let page = new Uint8Array(27 + segmentTable.byteLength + segmentData.byteLength);
let pageDV = new DataView(page.buffer);
segmentTable[0] = segmentData.length;
pageDV.setUint32( 0, 1399285583, true); // page headers starts with 'OggS'
pageDV.setUint8( 4, 0, true ); // Version
pageDV.setUint8( 5, headerType, true ); // 1 = continuation, 2 = beginning of stream, 4 = end of stream
pageDV.setUint32( 6, -1, true ); // granuale position -1 i.e single packet per page. granuable position is 8 bytes but 4bytes for us.
pageDV.setUint32( 14, this.serial, true ); // Bitstream serial number
pageDV.setUint32( 18, this.pageIndex++, true ); // Page sequence number
pageDV.setUint8( 26, 1, true ); // Number of segments in page, giving always 1 segment
page.set( segmentTable, 27 ); // Segment Table inserting at 27th position since page header length is 27
page.set( segmentData, 28 ); // inserting at 28th since Segment Table(1) + header length(27)
pageDV.setUint32( 22, this.getChecksum( page ), true ); // Checksum - generating for page data and inserting at 22th position into 32 bits
return page;
}
getOGG(packet) {
let oggData = this.oggHeader,
segmentData;
segmentData = this.getPage(packet, 4); /* headerType - end of stream i.e 4 */
oggData = appendByteArray(oggData, segmentData);
this.pageIndex = 2; /* reseting pageIndex to 2 so we can re-use same header */
return oggData;
}
getChecksum(data) {
let checksum = 0;
for ( var i = 0; i < data.length; i++ ) {
checksum = (checksum << 8) ^ this.checksumTable[ ((checksum>>>24) & 0xff) ^ data[i] ];
}
return checksum >>> 0;
}
initChecksumTable () {
this.checksumTable = [];
for ( var i = 0; i < 256; i++ ) {
var r = i << 24;
for ( var j = 0; j < 8; j++ ) {
r = ((r & 0x80000000) != 0) ? ((r << 1) ^ 0x04c11db7) : (r << 1);
}
this.checksumTable[i] = (r & 0xffffffff);
}
}
decode(packet) {
let ogg = this.getOGG(packet);
return new Promise((resolve) => {
this.audioCtx.decodeAudioData(ogg.buffer, (audioBuffer) => {
let audioData,
i,
result = [],
pcmFloat;
if (this.channel == 1) {
pcmFloat = audioBuffer.getChannelData(0);
} else {
pcmFloat = this.getMergedPCMData(audioBuffer);
}
resolve(result);
});
});
}
getMergedPCMData(audioBuffer) {
let audioData,
result,
length,
pcmData,
offset = 0
i=0,
j=0;
for(i=0; i<this.channel; i++) {
audioData = audioBuffer.getChannelData(i);
result.push(audioData);
}
length = result[0].length;
pcmFloat = new Float32Array(this.channel * length);
while(length > i) {
for(j=0; j<this.channel; j++) {
pcmFloat[offset++] = result[j][i];
}
i++;
}
return pcmFloat;
}
destroy() {
this.oggHeader = null;
this.audioCtx = null;
}
}

35
src/utils/opus-worker.js
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export default class OpusWorker {
constructor(channels) {
this.worker = new Worker('libopus/opus.min.js');
this.resolver = null;
this.worker.addEventListener('message', this.onMessage.bind(this));
this.worker.postMessage({
type: 'init',
config: {
rate:24000,
channels:channels
}
});
}
decode(packet) {
let workerData = {
type: 'decode',
buffer: packet
};
this.decoderPublisher.postMessage(workerData);
return new Promise((resolve) => {
this.resolver = resolve;
});
}
onMessage(event) {
let data = event.data;
if (this.resolver) {
this.resolver(data.buffer);
}
}
destroy() {
this.worker = null;
}
}

6
src/utils/utils.js
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export function appendByteArray(buffer1, buffer2) {
let tmp = new Uint8Array((buffer1.length|0) + (buffer2.length|0));
tmp.set(buffer1, 0);
tmp.set(buffer2, buffer1.length|0);
return tmp;
}
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