libpgs - npm Package Compare versions

Comparing version 0.2.0 to 0.2.1

dist/libpgs.js

@@ -1,1 +0,1 @@
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.libpgs=t():e.libpgs=t()}(self,(()=>(()=>{"use strict";var e={719:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.DisplaySet=void 0;const n=i(498),s=i(866),o=i(818),r=i(207),a=i(32);t.DisplaySet=class{constructor(){this.presentationTimestamp=0,this.decodingTimestamp=0,this.paletteDefinitions=[],this.objectDefinitions=[],this.windowDefinitions=[]}read(e,t){for(this.presentationTimestamp=0,this.decodingTimestamp=0,this.presentationComposition=void 0,this.paletteDefinitions=[],this.objectDefinitions=[],this.windowDefinitions=[];;){if(t){if(20551!=e.readUInt16())throw new Error("Invalid magic number!");this.presentationTimestamp=e.readUInt32(),this.decodingTimestamp=e.readUInt32()}const i=e.readUInt8(),d=e.readUInt16();switch(i){case a.SegmentType.paletteDefinition:const t=new s.PaletteDefinitionSegment;t.read(e,d),this.paletteDefinitions.push(t);break;case a.SegmentType.objectDefinition:const h=new o.ObjectDefinitionSegment;h.read(e,d),this.objectDefinitions.push(h);break;case a.SegmentType.presentationComposition:const c=new n.PresentationCompositionSegment;c.read(e,d),this.presentationComposition=c;break;case a.SegmentType.windowDefinition:const p=new r.WindowDefinitionSegment;p.read(e,d),this.windowDefinitions.push(p);break;case a.SegmentType.end:return;default:throw new Error(`Unsupported segment type ${i}`)}}}}},818:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.ObjectDefinitionSegment=void 0;const n=i(32);t.ObjectDefinitionSegment=class{constructor(){this.id=0,this.versionNumber=0,this.lastInSequenceFlag=0,this.width=0,this.height=0,this.dataLength=0}get isFirstInSequence(){return!!(128&this.lastInSequenceFlag)}get isLastInSequence(){return!!(64&this.lastInSequenceFlag)}get segmentType(){return n.SegmentType.objectDefinition}read(e,t){this.id=e.readUInt16(),this.versionNumber=e.readUInt8(),this.lastInSequenceFlag=e.readUInt8(),this.isFirstInSequence?(this.dataLength=e.readUInt24(),this.width=e.readUInt16(),this.height=e.readUInt16(),this.data=e.readBytes(t-11)):this.data=e.readBytes(t-4)}}},866:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.PaletteDefinitionSegment=t.PaletteEntry=void 0;const n=i(32);class s{constructor(){this.y=0,this.cr=0,this.cb=0,this.r=0,this.g=0,this.b=0,this.a=0}}t.PaletteEntry=s;class o{constructor(){this.id=0,this.versionNumber=0,this.entries={}}get segmentType(){return n.SegmentType.paletteDefinition}read(e,t){this.id=e.readUInt8(),this.versionNumber=e.readUInt8();const i=(t-2)/5;this.entries={};for(let t=0;t<i;t++){const t=e.readUInt8(),i=new s;i.y=e.readUInt8(),i.cr=e.readUInt8(),i.cb=e.readUInt8(),i.a=e.readUInt8();const n=i.y,r=i.cb-128,a=i.cr-128;i.r=o.clamp(Math.round(n+1.402*a),0,255),i.g=o.clamp(Math.round(n-.34414*r-.71414*a),0,255),i.b=o.clamp(Math.round(n+1.772*r),0,255),this.entries[t]=i}}static clamp(e,t,i){return Math.max(t,Math.min(e,i))}}t.PaletteDefinitionSegment=o},498:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.PresentationCompositionSegment=t.CompositionObject=void 0;const n=i(32);class s{constructor(){this.id=0,this.windowId=0,this.croppedFlag=0,this.horizontalPosition=0,this.verticalPosition=0,this.croppingHorizontalPosition=0,this.croppingVerticalPosition=0,this.croppingWidth=0,this.croppingHeightPosition=0}get hasCropping(){return!!(128&this.croppedFlag)}}t.CompositionObject=s,t.PresentationCompositionSegment=class{constructor(){this.width=0,this.height=0,this.frameRate=0,this.compositionNumber=0,this.compositionState=0,this.paletteUpdateFlag=0,this.paletteId=0,this.compositionObjects=[]}get segmentType(){return n.SegmentType.presentationComposition}read(e,t){this.width=e.readUInt16(),this.height=e.readUInt16(),this.frameRate=e.readUInt8(),this.compositionNumber=e.readUInt16(),this.compositionState=e.readUInt8(),this.paletteUpdateFlag=e.readUInt8(),this.paletteId=e.readUInt8();const i=e.readUInt8();this.compositionObjects=[];for(let t=0;t<i;t++){const t=new s;t.id=e.readUInt16(),t.windowId=e.readUInt8(),t.croppedFlag=e.readUInt8(),t.horizontalPosition=e.readUInt16(),t.verticalPosition=e.readUInt16(),t.hasCropping&&(t.croppingHorizontalPosition=e.readUInt16(),t.croppingVerticalPosition=e.readUInt16(),t.croppingWidth=e.readUInt16(),t.croppingHeightPosition=e.readUInt16()),this.compositionObjects.push(t)}}}},32:(e,t)=>{var i;Object.defineProperty(t,"__esModule",{value:!0}),t.SegmentType=void 0,function(e){e[e.paletteDefinition=20]="paletteDefinition",e[e.objectDefinition=21]="objectDefinition",e[e.presentationComposition=22]="presentationComposition",e[e.windowDefinition=23]="windowDefinition",e[e.end=128]="end"}(i||(t.SegmentType=i={}))},207:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.WindowDefinitionSegment=t.WindowDefinition=void 0;const n=i(32);class s{constructor(){this.id=0,this.horizontalPosition=0,this.verticalPosition=0,this.width=0,this.height=0}}t.WindowDefinition=s,t.WindowDefinitionSegment=class{constructor(){this.windows=[]}get segmentType(){return n.SegmentType.windowDefinition}read(e,t){const i=e.readUInt8();this.windows=[];for(let t=0;t<i;t++){const t=new s;t.id=e.readUInt8(),t.horizontalPosition=e.readUInt16(),t.verticalPosition=e.readUInt16(),t.width=e.readUInt16(),t.height=e.readUInt16(),this.windows.push(t)}}}},97:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(s,o){function r(e){try{d(n.next(e))}catch(e){o(e)}}function a(e){try{d(n.throw(e))}catch(e){o(e)}}function d(e){var t;e.done?s(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(r,a)}d((n=n.apply(e,t||[])).next())}))};Object.defineProperty(t,"__esModule",{value:!0}),t.PgsRenderer=void 0;const s=i(719),o=i(489),r=i(494),a=i(381);t.PgsRenderer=class{constructor(e){if(this.displaySets=[],this.currentIndex=-1,this.onTimeUpdate=e=>{this.video&&this.renderAtTimestamp(this.video.currentTime)},e.video&&(this.video=e.video),e.canvas)this.canvas=e.canvas,this.canvasOwner=!1;else{if(!this.video)throw new Error("No canvas or video element was provided!");this.canvas=this.createCanvasElement(),this.canvasOwner=!0,this.video.parentElement.appendChild(this.canvas)}const t=this.canvas.getContext("2d");if(!t)throw new Error("Can not create 2d canvas context!");this.context=t,this.registerEvents(),e.subUrl&&this.loadFromUrlAsync(e.subUrl).then()}createCanvasElement(){const e=document.createElement("canvas");return e.style.position="absolute",e.style.top="0",e.style.left="0",e.style.right="0",e.style.bottom="0",e.style.pointerEvents="none",e.style.objectFit="contain",e.style.width="100%",e.style.height="100%",e}destroyCanvasElement(){this.canvas.remove()}registerEvents(){this.video&&this.video.addEventListener("timeupdate",this.onTimeUpdate)}unregisterEvents(){this.video&&this.video.removeEventListener("timeupdate",this.onTimeUpdate)}loadFromUrlAsync(e){return n(this,void 0,void 0,(function*(){const t=yield fetch(e),i=yield t.arrayBuffer();this.loadFromBuffer(i)}))}loadFromBuffer(e){this.displaySets=[];const t=new o.BigEndianBinaryReader(new Uint8Array(e));for(;t.position<t.length;){const e=new s.DisplaySet;e.read(t,!0),this.displaySets.push(e)}}renderAtTimestamp(e){let t=-1;e=1e3*e*90;for(const i of this.displaySets){if(i.presentationTimestamp>e)break;t++}if(this.currentIndex==t)return;if(this.currentIndex=t,t<0)return;const i=this.displaySets[t];this.renderDisplaySet(i)}renderDisplaySet(e){if(e.presentationComposition){this.canvas.width=e.presentationComposition.width,this.canvas.height=e.presentationComposition.height;for(const t of e.presentationComposition.compositionObjects)this.renderComposition(e,t)}}renderComposition(e,t){if(!e.presentationComposition)return;let i=e.windowDefinitions.flatMap((e=>e.windows)).find((e=>e.id===t.windowId));if(!i)return;const n=this.getPixelDataFromComposition(e,t);n&&this.context.drawImage(n,i.horizontalPosition,i.verticalPosition)}getPixelDataFromComposition(e,t){if(!e.presentationComposition)return;let i=e.paletteDefinitions.find((t=>{var i;return t.id===(null===(i=e.presentationComposition)||void 0===i?void 0:i.paletteId)}));if(!i)return;let n=0,s=0;const o=[];for(const i of e.objectDefinitions)i.id==t.id&&(i.isFirstInSequence&&(n=i.width,s=i.height),i.data&&o.push(i.data));if(0==o.length)return;const d=new a.CombinedBinaryReader(o),h=document.createElement("canvas"),c=h.getContext("2d");h.width=n,h.height=s;const p=c.createImageData(n,s),l=p.data;return r.RunLengthEncoding.decode(d,((e,t,n,s)=>{const o=null==i?void 0:i.entries[s];o&&(l[4*e]=o.r,l[4*e+1]=o.g,l[4*e+2]=o.b,l[4*e+3]=o.a)})),c.putImageData(p,0,0),h}dispose(){this.unregisterEvents(),this.canvasOwner&&this.destroyCanvasElement(),this.displaySets=[]}}},385:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.ArrayBinaryReader=void 0,t.ArrayBinaryReader=class{constructor(e){this._position=0,this.array=e}get position(){return this._position}get length(){return this.array.length}readByte(){return this.array[this._position++]}readBytes(e){const t=this.array.slice(this._position,this._position+e);return this._position+=e,t}}},489:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.BigEndianBinaryReader=void 0;const n=i(385);t.BigEndianBinaryReader=class{constructor(e){e instanceof Uint8Array?this.reader=new n.ArrayBinaryReader(e):this.reader=e}get position(){return this.reader.position}get length(){return this.reader.length}readUInt8(){return this.reader.readByte()}readUInt16(){return(this.reader.readByte()<<8)+this.reader.readByte()}readUInt24(){return(this.reader.readByte()<<16)+(this.reader.readByte()<<8)+this.reader.readByte()}readUInt32(){return(this.reader.readByte()<<24)+(this.reader.readByte()<<16)+(this.reader.readByte()<<8)+this.reader.readByte()}readBytes(e){return this.reader.readBytes(e)}}},381:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.CombinedBinaryReader=void 0;const n=i(385);t.CombinedBinaryReader=class{constructor(e){this._position=0,this.subReaderIndex=0,this.subReaders=e.map((e=>e instanceof Uint8Array?new n.ArrayBinaryReader(e):e));let t=0;for(const i of e)t+=i.length;this._length=t}get position(){return this._position}get length(){return this._length}readByte(){for(;this.subReaders[this.subReaderIndex].position>=this.subReaders[this.subReaderIndex].length;)this.subReaderIndex++;return this._position++,this.subReaders[this.subReaderIndex].readByte()}readBytes(e){const t=new Uint8Array(e);for(let i=0;i<e;i++)t[i]=this.readByte();return t}}},494:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.RunLengthEncoding=void 0;const n=i(385);t.RunLengthEncoding=class{static decode(e,t){e instanceof Uint8Array&&(e=new n.ArrayBinaryReader(e));let i=0,s=0,o=0;for(;e.position<e.length;){const n=e.readByte();if(0!=n){t(o++,i++,s,n);continue}const r=e.readByte();if(0==r){i=0,s++;continue}const a=!!(128&r);let d=63&r;64&r&&(d=(d<<8)+e.readByte());const h=a?e.readByte():0;for(let e=0;e<d;e++)t(o++,i++,s,h)}}}}},t={};function i(n){var s=t[n];if(void 0!==s)return s.exports;var o=t[n]={exports:{}};return e[n].call(o.exports,o,o.exports,i),o.exports}var n={};return(()=>{var e=n;Object.defineProperty(e,"__esModule",{value:!0}),e.PgsRenderer=void 0;const t=i(97);Object.defineProperty(e,"PgsRenderer",{enumerable:!0,get:function(){return t.PgsRenderer}})})(),n})()));
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.libpgs=t():e.libpgs=t()}(self,(()=>(()=>{"use strict";var e={719:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.DisplaySet=void 0;const n=i(498),s=i(866),r=i(818),o=i(207),a=i(32);t.DisplaySet=class{constructor(){this.presentationTimestamp=0,this.decodingTimestamp=0,this.paletteDefinitions=[],this.objectDefinitions=[],this.windowDefinitions=[]}read(e,t){for(this.presentationTimestamp=0,this.decodingTimestamp=0,this.presentationComposition=void 0,this.paletteDefinitions=[],this.objectDefinitions=[],this.windowDefinitions=[];;){if(t){if(20551!=e.readUInt16())throw new Error("Invalid magic number!");this.presentationTimestamp=e.readUInt32(),this.decodingTimestamp=e.readUInt32()}const i=e.readUInt8(),d=e.readUInt16();switch(i){case a.SegmentType.paletteDefinition:const t=new s.PaletteDefinitionSegment;t.read(e,d),this.paletteDefinitions.push(t);break;case a.SegmentType.objectDefinition:const h=new r.ObjectDefinitionSegment;h.read(e,d),this.objectDefinitions.push(h);break;case a.SegmentType.presentationComposition:const c=new n.PresentationCompositionSegment;c.read(e,d),this.presentationComposition=c;break;case a.SegmentType.windowDefinition:const p=new o.WindowDefinitionSegment;p.read(e,d),this.windowDefinitions.push(p);break;case a.SegmentType.end:return;default:throw new Error(`Unsupported segment type ${i}`)}}}}},818:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.ObjectDefinitionSegment=void 0;const n=i(32);t.ObjectDefinitionSegment=class{constructor(){this.id=0,this.versionNumber=0,this.lastInSequenceFlag=0,this.width=0,this.height=0,this.dataLength=0}get isFirstInSequence(){return!!(128&this.lastInSequenceFlag)}get isLastInSequence(){return!!(64&this.lastInSequenceFlag)}get segmentType(){return n.SegmentType.objectDefinition}read(e,t){this.id=e.readUInt16(),this.versionNumber=e.readUInt8(),this.lastInSequenceFlag=e.readUInt8(),this.isFirstInSequence?(this.dataLength=e.readUInt24(),this.width=e.readUInt16(),this.height=e.readUInt16(),this.data=e.readBytes(t-11)):this.data=e.readBytes(t-4)}}},866:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.PaletteDefinitionSegment=t.PaletteEntry=void 0;const n=i(32);class s{constructor(){this.y=0,this.cr=0,this.cb=0,this.r=0,this.g=0,this.b=0,this.a=0}}t.PaletteEntry=s;class r{constructor(){this.id=0,this.versionNumber=0,this.entries={}}get segmentType(){return n.SegmentType.paletteDefinition}read(e,t){this.id=e.readUInt8(),this.versionNumber=e.readUInt8();const i=(t-2)/5;this.entries={};for(let t=0;t<i;t++){const t=e.readUInt8(),i=new s;i.y=e.readUInt8(),i.cr=e.readUInt8(),i.cb=e.readUInt8(),i.a=e.readUInt8();const n=i.y,o=i.cb-128,a=i.cr-128;i.r=r.clamp(Math.round(n+1.402*a),0,255),i.g=r.clamp(Math.round(n-.34414*o-.71414*a),0,255),i.b=r.clamp(Math.round(n+1.772*o),0,255),this.entries[t]=i}}static clamp(e,t,i){return Math.max(t,Math.min(e,i))}}t.PaletteDefinitionSegment=r},498:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.PresentationCompositionSegment=t.CompositionObject=void 0;const n=i(32);class s{constructor(){this.id=0,this.windowId=0,this.croppedFlag=0,this.horizontalPosition=0,this.verticalPosition=0,this.croppingHorizontalPosition=0,this.croppingVerticalPosition=0,this.croppingWidth=0,this.croppingHeightPosition=0}get hasCropping(){return!!(128&this.croppedFlag)}}t.CompositionObject=s,t.PresentationCompositionSegment=class{constructor(){this.width=0,this.height=0,this.frameRate=0,this.compositionNumber=0,this.compositionState=0,this.paletteUpdateFlag=0,this.paletteId=0,this.compositionObjects=[]}get segmentType(){return n.SegmentType.presentationComposition}read(e,t){this.width=e.readUInt16(),this.height=e.readUInt16(),this.frameRate=e.readUInt8(),this.compositionNumber=e.readUInt16(),this.compositionState=e.readUInt8(),this.paletteUpdateFlag=e.readUInt8(),this.paletteId=e.readUInt8();const i=e.readUInt8();this.compositionObjects=[];for(let t=0;t<i;t++){const t=new s;t.id=e.readUInt16(),t.windowId=e.readUInt8(),t.croppedFlag=e.readUInt8(),t.horizontalPosition=e.readUInt16(),t.verticalPosition=e.readUInt16(),t.hasCropping&&(t.croppingHorizontalPosition=e.readUInt16(),t.croppingVerticalPosition=e.readUInt16(),t.croppingWidth=e.readUInt16(),t.croppingHeightPosition=e.readUInt16()),this.compositionObjects.push(t)}}}},32:(e,t)=>{var i;Object.defineProperty(t,"__esModule",{value:!0}),t.SegmentType=void 0,function(e){e[e.paletteDefinition=20]="paletteDefinition",e[e.objectDefinition=21]="objectDefinition",e[e.presentationComposition=22]="presentationComposition",e[e.windowDefinition=23]="windowDefinition",e[e.end=128]="end"}(i||(t.SegmentType=i={}))},207:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.WindowDefinitionSegment=t.WindowDefinition=void 0;const n=i(32);class s{constructor(){this.id=0,this.horizontalPosition=0,this.verticalPosition=0,this.width=0,this.height=0}}t.WindowDefinition=s,t.WindowDefinitionSegment=class{constructor(){this.windows=[]}get segmentType(){return n.SegmentType.windowDefinition}read(e,t){const i=e.readUInt8();this.windows=[];for(let t=0;t<i;t++){const t=new s;t.id=e.readUInt8(),t.horizontalPosition=e.readUInt16(),t.verticalPosition=e.readUInt16(),t.width=e.readUInt16(),t.height=e.readUInt16(),this.windows.push(t)}}}},97:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(s,r){function o(e){try{d(n.next(e))}catch(e){r(e)}}function a(e){try{d(n.throw(e))}catch(e){r(e)}}function d(e){var t;e.done?s(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}d((n=n.apply(e,t||[])).next())}))};Object.defineProperty(t,"__esModule",{value:!0}),t.PgsRenderer=void 0;const s=i(719),r=i(489),o=i(494),a=i(381);t.PgsRenderer=class{constructor(e){var t;if(this.displaySets=[],this.currentIndex=-1,this.onTimeUpdate=()=>{this.video&&this.renderAtTimestamp(this.video.currentTime+this._timeOffset)},this._timeOffset=0,e.video&&(this.video=e.video),e.canvas)this.canvas=e.canvas,this.canvasOwner=!1;else{if(!this.video)throw new Error("No canvas or video element was provided!");this.canvas=this.createCanvasElement(),this.canvasOwner=!0,this.video.parentElement.appendChild(this.canvas)}const i=this.canvas.getContext("2d");if(!i)throw new Error("Can not create 2d canvas context!");this.context=i,this._timeOffset=null!==(t=e.timeOffset)&&void 0!==t?t:0,this.registerEvents(),e.subUrl&&this.loadFromUrlAsync(e.subUrl).then()}createCanvasElement(){const e=document.createElement("canvas");return e.style.position="absolute",e.style.top="0",e.style.left="0",e.style.right="0",e.style.bottom="0",e.style.pointerEvents="none",e.style.objectFit="contain",e.style.width="100%",e.style.height="100%",e}destroyCanvasElement(){this.canvas.remove()}registerEvents(){this.video&&this.video.addEventListener("timeupdate",this.onTimeUpdate)}unregisterEvents(){this.video&&this.video.removeEventListener("timeupdate",this.onTimeUpdate)}get timeOffset(){return this._timeOffset}set timeOffset(e){this._timeOffset!==e&&(this._timeOffset=e,this.onTimeUpdate())}loadFromUrlAsync(e){return n(this,void 0,void 0,(function*(){const t=yield fetch(e),i=yield t.arrayBuffer();this.loadFromBuffer(i)}))}loadFromBuffer(e){this.displaySets=[];const t=new r.BigEndianBinaryReader(new Uint8Array(e));for(;t.position<t.length;){const e=new s.DisplaySet;e.read(t,!0),this.displaySets.push(e)}}renderAtTimestamp(e){let t=-1;e=1e3*e*90;for(const i of this.displaySets){if(i.presentationTimestamp>e)break;t++}if(this.currentIndex==t)return;if(this.currentIndex=t,t<0)return;const i=this.displaySets[t];this.renderDisplaySet(i)}renderDisplaySet(e){if(e.presentationComposition){this.canvas.width=e.presentationComposition.width,this.canvas.height=e.presentationComposition.height;for(const t of e.presentationComposition.compositionObjects)this.renderComposition(e,t)}}renderComposition(e,t){if(!e.presentationComposition)return;let i=e.windowDefinitions.flatMap((e=>e.windows)).find((e=>e.id===t.windowId));if(!i)return;const n=this.getPixelDataFromComposition(e,t);n&&this.context.drawImage(n,i.horizontalPosition,i.verticalPosition)}getPixelDataFromComposition(e,t){if(!e.presentationComposition)return;let i=e.paletteDefinitions.find((t=>{var i;return t.id===(null===(i=e.presentationComposition)||void 0===i?void 0:i.paletteId)}));if(!i)return;let n=0,s=0;const r=[];for(const i of e.objectDefinitions)i.id==t.id&&(i.isFirstInSequence&&(n=i.width,s=i.height),i.data&&r.push(i.data));if(0==r.length)return;const d=new a.CombinedBinaryReader(r),h=document.createElement("canvas"),c=h.getContext("2d");h.width=n,h.height=s;const p=c.createImageData(n,s),l=p.data;return o.RunLengthEncoding.decode(d,((e,t,n,s)=>{const r=null==i?void 0:i.entries[s];r&&(l[4*e]=r.r,l[4*e+1]=r.g,l[4*e+2]=r.b,l[4*e+3]=r.a)})),c.putImageData(p,0,0),h}dispose(){this.unregisterEvents(),this.canvasOwner&&this.destroyCanvasElement(),this.displaySets=[]}}},385:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.ArrayBinaryReader=void 0,t.ArrayBinaryReader=class{constructor(e){this._position=0,this.array=e}get position(){return this._position}get length(){return this.array.length}readByte(){return this.array[this._position++]}readBytes(e){const t=this.array.slice(this._position,this._position+e);return this._position+=e,t}}},489:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.BigEndianBinaryReader=void 0;const n=i(385);t.BigEndianBinaryReader=class{constructor(e){e instanceof Uint8Array?this.reader=new n.ArrayBinaryReader(e):this.reader=e}get position(){return this.reader.position}get length(){return this.reader.length}readUInt8(){return this.reader.readByte()}readUInt16(){return(this.reader.readByte()<<8)+this.reader.readByte()}readUInt24(){return(this.reader.readByte()<<16)+(this.reader.readByte()<<8)+this.reader.readByte()}readUInt32(){return(this.reader.readByte()<<24)+(this.reader.readByte()<<16)+(this.reader.readByte()<<8)+this.reader.readByte()}readBytes(e){return this.reader.readBytes(e)}}},381:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.CombinedBinaryReader=void 0;const n=i(385);t.CombinedBinaryReader=class{constructor(e){this._position=0,this.subReaderIndex=0,this.subReaders=e.map((e=>e instanceof Uint8Array?new n.ArrayBinaryReader(e):e));let t=0;for(const i of e)t+=i.length;this._length=t}get position(){return this._position}get length(){return this._length}readByte(){for(;this.subReaders[this.subReaderIndex].position>=this.subReaders[this.subReaderIndex].length;)this.subReaderIndex++;return this._position++,this.subReaders[this.subReaderIndex].readByte()}readBytes(e){const t=new Uint8Array(e);for(let i=0;i<e;i++)t[i]=this.readByte();return t}}},494:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.RunLengthEncoding=void 0;const n=i(385);t.RunLengthEncoding=class{static decode(e,t){e instanceof Uint8Array&&(e=new n.ArrayBinaryReader(e));let i=0,s=0,r=0;for(;e.position<e.length;){const n=e.readByte();if(0!=n){t(r++,i++,s,n);continue}const o=e.readByte();if(0==o){i=0,s++;continue}const a=!!(128&o);let d=63&o;64&o&&(d=(d<<8)+e.readByte());const h=a?e.readByte():0;for(let e=0;e<d;e++)t(r++,i++,s,h)}}}}},t={};function i(n){var s=t[n];if(void 0!==s)return s.exports;var r=t[n]={exports:{}};return e[n].call(r.exports,r,r.exports,i),r.exports}var n={};return(()=>{var e=n;Object.defineProperty(e,"__esModule",{value:!0}),e.PgsRenderer=void 0;const t=i(97);Object.defineProperty(e,"PgsRenderer",{enumerable:!0,get:function(){return t.PgsRenderer}})})(),n})()));

dist/pgsRenderer.d.ts

@@ -18,3 +18,13 @@ import { PgsRendererOptions } from "./pgsRendererOptions";
     private onTimeUpdate;
+    private _timeOffset;
     /**
+     * Gets the video-to-subtitle time offset in seconds.
+     */
+    get timeOffset(): number;
+    /**
+     * Sets the video-to-subtitle time offset and re-renders the current subtitle if needed.
+     * @param timeOffset The new time offset in seconds.
+     */
+    set timeOffset(timeOffset: number);
+    /**
      * Loads the subtitle file from the given url.
@@ -21,0 +31,0 @@ * @param url The url to the PGS file.

dist/pgsRendererOptions.d.ts

@@ -13,2 +13,6 @@ export interface PgsRendererOptions {
     /**
+     * The video-to-subtitle time offset in seconds.
+     */
+    timeOffset?: number;
+    /**
      * The initial subtitle file url to load from.
@@ -15,0 +19,0 @@ */

package.json

 {
   "name": "libpgs",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "author": "David Schulte",
@@ -5,0 +5,0 @@ "license": "MIT",

src/pgsRenderer.ts

@@ -41,2 +41,4 @@ import {DisplaySet} from "./pgs/displaySet";
 
+        this._timeOffset = options.timeOffset ?? 0;
+
         this.registerEvents();
@@ -80,9 +82,28 @@
 
-    private onTimeUpdate = (e: Event): void => {
+    private onTimeUpdate = (): void => {
         if (this.video) {
-            this.renderAtTimestamp(this.video.currentTime);
+            this.renderAtTimestamp(this.video.currentTime + this._timeOffset);
         }
     }
 
+    private _timeOffset: number = 0;
+
     /**
+     * Gets the video-to-subtitle time offset in seconds.
+     */
+    public get timeOffset(): number {
+        return this._timeOffset;
+    }
+
+    /**
+     * Sets the video-to-subtitle time offset and re-renders the current subtitle if needed.
+     * @param timeOffset The new time offset in seconds.
+     */
+    public set timeOffset(timeOffset: number) {
+        if (this._timeOffset === timeOffset) return;
+        this._timeOffset = timeOffset;
+        this.onTimeUpdate();
+    }
+
+    /**
      * Loads the subtitle file from the given url.
@@ -89,0 +110,0 @@ * @param url The url to the PGS file.

src/pgsRendererOptions.ts

@@ -15,2 +15,7 @@ export interface PgsRendererOptions {
     /**
+     * The video-to-subtitle time offset in seconds.
+     */
+    timeOffset?: number;
+
+    /**
      * The initial subtitle file url to load from.
@@ -17,0 +22,0 @@ */

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Improved metrics

Total package byte prevSize

53745

increased by2.56%

Lines of code

1080

increased by3.35%

No dependency changes