Press n or j to go to the next uncovered block, b, p or k for the previous block.
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 | 1x | /* demuxer web worker. * - listen to worker message, and trigger DemuxerInline upon reception of Fragments. * - provides MP4 Boxes back to main thread using [transferable objects](https://developers.google.com/web/updates/2011/12/Transferable-Objects-Lightning-Fast) in order to minimize message passing overhead. */ import DemuxerInline from '../demux/demuxer-inline'; import Event from '../events'; import { enableLogs } from '../utils/logger'; import EventEmitter from 'events'; let DemuxerWorker = function (self) { // observer setup let observer = new EventEmitter(); observer.trigger = function trigger (event, ...data) { observer.emit(event, event, ...data); }; observer.off = function off (event, ...data) { observer.removeListener(event, ...data); }; let forwardMessage = function (ev, data) { self.postMessage({ event: ev, data: data }); }; self.addEventListener('message', function (ev) { let data = ev.data; // console.log('demuxer cmd:' + data.cmd); switch (data.cmd) { case 'init': let config = JSON.parse(data.config); self.demuxer = new DemuxerInline(observer, data.typeSupported, config, data.vendor); try { enableLogs(config.debug === true); } catch (err) { console.warn('demuxerWorker: unable to enable logs'); } // signal end of worker init forwardMessage('init', null); break; case 'demux': self.demuxer.push(data.data, data.decryptdata, data.initSegment, data.audioCodec, data.videoCodec, data.timeOffset, data.discontinuity, data.trackSwitch, data.contiguous, data.duration, data.accurateTimeOffset, data.defaultInitPTS); break; default: break; } }); // forward events to main thread observer.on(Event.FRAG_DECRYPTED, forwardMessage); observer.on(Event.FRAG_PARSING_INIT_SEGMENT, forwardMessage); observer.on(Event.FRAG_PARSED, forwardMessage); observer.on(Event.ERROR, forwardMessage); observer.on(Event.FRAG_PARSING_METADATA, forwardMessage); observer.on(Event.FRAG_PARSING_USERDATA, forwardMessage); observer.on(Event.INIT_PTS_FOUND, forwardMessage); // special case for FRAG_PARSING_DATA: pass data1/data2 as transferable object (no copy) observer.on(Event.FRAG_PARSING_DATA, function (ev, data) { let transferable = []; let message = { event: ev, data: data }; if (data.data1) { message.data1 = data.data1.buffer; transferable.push(data.data1.buffer); delete data.data1; } if (data.data2) { message.data2 = data.data2.buffer; transferable.push(data.data2.buffer); delete data.data2; } self.postMessage(message, transferable); }); }; export default DemuxerWorker; |