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2 lines
No EOL
1.7 KiB
JavaScript
2 lines
No EOL
1.7 KiB
JavaScript
/* jshint worker:true */
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!function(c){"use strict";if(c.zWorkerInitialized)throw new Error("z-worker.js should be run only once");c.zWorkerInitialized=!0,addEventListener("message",function(t){var e,r,c=t.data,n=c.type,s=c.sn,p=o[n];if(p)try{p(c)}catch(t){e={type:n,sn:s,error:(r=t,{message:r.message,stack:r.stack})},postMessage(e)}});var o={importScripts:function(t){t.scripts&&0<t.scripts.length&&importScripts.apply(void 0,t.scripts);postMessage({type:"importScripts"})},newTask:h,append:t,flush:t},f={};function h(t){var e=c[t.codecClass],r=t.sn;if(f[r])throw Error("duplicated sn");f[r]={codec:new e(t.options),crcInput:"input"===t.crcType,crcOutput:"output"===t.crcType,crc:new n},postMessage({type:"newTask",sn:r})}var l=c.performance?c.performance.now.bind(c.performance):Date.now;function t(t){var e=t.sn,r=t.type,c=t.data,n=f[e];!n&&t.codecClass&&(h(t),n=f[e]);var s,p="append"===r,o=l();if(p)try{s=n.codec.append(c,function(t){postMessage({type:"progress",sn:e,loaded:t})})}catch(t){throw delete f[e],t}else delete f[e],s=n.codec.flush();var a=l()-o;o=l(),c&&n.crcInput&&n.crc.append(c),s&&n.crcOutput&&n.crc.append(s);var i=l()-o,u={type:r,sn:e,codecTime:a,crcTime:i},d=[];s&&(u.data=s,d.push(s.buffer)),p||!n.crcInput&&!n.crcOutput||(u.crc=n.crc.get());try{postMessage(u,d)}catch(t){postMessage(u)}}function n(){this.crc=-1}function e(){}n.prototype.append=function(t){for(var e=0|this.crc,r=this.table,c=0,n=0|t.length;c<n;c++)e=e>>>8^r[255&(e^t[c])];this.crc=e},n.prototype.get=function(){return~this.crc},n.prototype.table=function(){var t,e,r,c=[];for(t=0;t<256;t++){for(r=t,e=0;e<8;e++)1&r?r=r>>>1^3988292384:r>>>=1;c[t]=r}return c}(),(c.NOOP=e).prototype.append=function(t,e){return t},e.prototype.flush=function(){}}(this); |