ArtPlayer/docs/compiled/artplayer-proxy-mediabunny.js

/*!
 * artplayer-proxy-mediabunny.js v1.0.1
 * Github: https://github.com/zhw2590582/ArtPlayer
 * (c) 2017-2026 Harvey Zhao
 * Released under the MIT License.
 */
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/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
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/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
class Z{constructor(e,t){if(this.data=e,this.mimeType=t,!(e instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if("string"!==typeof t)throw new TypeError("mimeType must be a string.")}}class ee{constructor(e,t,r,i){if(this.data=e,this.mimeType=t,this.name=r,this.description=i,!(e instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if(void 0!==t&&"string"!==typeof t)throw new TypeError("mimeType, when provided, must be a string.");if(void 0!==r&&"string"!==typeof r)throw new TypeError("name, when provided, must be a string.");if(void 0!==i&&"string"!==typeof i)throw new TypeError("description, when provided, must be a string.")}}const 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TypeError(`Unhandled codec '${t}'.`)},ce=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350],le=[-1,1,2,3,4,5,6,8],de=e=>{if(!e||e.byteLength<2)throw new TypeError("AAC description must be at least 2 bytes long.");const t=new a(e);let r=t.readBits(5);31===r&&(r=32+t.readBits(6));const i=t.readBits(4);let s=null;15===i?s=t.readBits(24):i<ce.length&&(s=ce[i]);const n=t.readBits(4);let o=null;return n>=1&&n<=7&&(o=le[n]),{objectType:r,frequencyIndex:i,sampleRate:s,channelConfiguration:n,numberOfChannels:o}},ue=48e3,he=/^pcm-([usf])(\d+)+(be)?$/,me=e=>{if(t(re.includes(e)),"ulaw"===e)return{dataType:"ulaw",sampleSize:1,littleEndian:!0,silentValue:255};if("alaw"===e)return{dataType:"alaw",sampleSize:1,littleEndian:!0,silentValue:213};const r=he.exec(e);let i;t(r),i="u"===r[1]?"unsigned":"s"===r[1]?"signed":"float";return{dataType:i,sampleSize:Number(r[2])/8,littleEndian:"be"!==r[3],silentValue:"pcm-u8"===e?128:0}};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
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t=be(e),r=t.filter(e=>_e(e)===ge.VPS_NUT),i=t.filter(e=>_e(e)===ge.SPS_NUT),o=t.filter(e=>_e(e)===ge.PPS_NUT),c=t.filter(e=>_e(e)===ge.PREFIX_SEI_NUT||_e(e)===ge.SUFFIX_SEI_NUT);if(0===i.length||0===o.length)return null;const l=i[0],d=new a(ye(l));d.skipBits(16),d.readBits(4);const u=d.readBits(3),h=d.readBits(1),{general_profile_space:m,general_tier_flag:f,general_profile_idc:p,general_profile_compatibility_flags:g,general_constraint_indicator_flags:k,general_level_idc:b}=Ee(d,u);s(d);const T=s(d);3===T&&d.skipBits(1),s(d),s(d),d.readBits(1)&&(s(d),s(d),s(d),s(d));const y=s(d),w=s(d);s(d);const S=d.readBits(1);for(let e=S?0:u;e<=u;e++)s(d),s(d),s(d);s(d),s(d),s(d),s(d),s(d),s(d),d.readBits(1)&&d.readBits(1)&&Fe(d),d.skipBits(1),d.skipBits(1),d.readBits(1)&&(d.skipBits(4),d.skipBits(4),s(d),s(d),d.skipBits(1));const I=s(d);if(De(d,I),d.readBits(1)){const e=s(d);for(let t=0;t<e;t++)s(d),d.skipBits(1)}d.skipBits(1),d.skipBits(1);let v=0;d.readBits(1)&&(v=Re(d,u));let P=0;if(o.length>0){const e=o[0],t=new a(ye(e));t.skipBits(16),s(t),s(t),t.skipBits(1),t.skipBits(1),t.skipBits(3),t.skipBits(1),t.skipBits(1),s(t),s(t),n(t),t.skipBits(1),t.skipBits(1),t.readBits(1)&&s(t),n(t),n(t),t.skipBits(1),t.skipBits(1),t.skipBits(1),t.skipBits(1);const r=t.readBits(1),i=t.readBits(1);P=r||i?r&&!i?2:!r&&i?3:0:0}const x=[...r.length?[{arrayCompleteness:1,nalUnitType:ge.VPS_NUT,nalUnits:r}]:[],...i.length?[{arrayCompleteness:1,nalUnitType:ge.SPS_NUT,nalUnits:i}]:[],...o.length?[{arrayCompleteness:1,nalUnitType:ge.PPS_NUT,nalUnits:o}]:[],...c.length?[{arrayCompleteness:1,nalUnitType:_e(c[0]),nalUnits:c}]:[]];return{configurationVersion:1,generalProfileSpace:m,generalTierFlag:f,generalProfileIdc:p,generalProfileCompatibilityFlags:g,generalConstraintIndicatorFlags:k,generalLevelIdc:b,minSpatialSegmentationIdc:v,parallelismType:P,chromaFormatIdc:T,bitDepthLumaMinus8:y,bitDepthChromaMinus8:w,avgFrameRate:0,constantFrameRate:0,numTemporalLayers:u+1,temporalIdNested:h,lengthSizeMinusOne:3,arrays:x}}catch(t){return console.error("Error building HEVC Decoder Configuration Record:",t),null}},Ee=(e,t)=>{const r=e.readBits(2),i=e.readBits(1),a=e.readBits(5);let s=0;for(let d=0;d<32;d++)s=s<<1|e.readBits(1);const n=new Uint8Array(6);for(let d=0;d<6;d++)n[d]=e.readBits(8);const o=e.readBits(8),c=[],l=[];for(let d=0;d<t;d++)c.push(e.readBits(1)),l.push(e.readBits(1));if(t>0)for(let d=t;d<8;d++)e.skipBits(2);for(let d=0;d<t;d++)c[d]&&e.skipBits(88),l[d]&&e.skipBits(8);return{general_profile_space:r,general_tier_flag:i,general_profile_idc:a,general_profile_compatibility_flags:s,general_constraint_indicator_flags:n,general_level_idc:o}},Fe=e=>{for(let t=0;t<4;t++)for(let r=0;r<(3===t?2:6);r++){if(e.readBits(1)){const r=Math.min(64,1<<4+(t<<1));t>1&&n(e);for(let t=0;t<r;t++)n(e)}else s(e)}},De=(e,t)=>{const r=[];for(let i=0;i<t;i++)r[i]=Ae(e,i,t,r)},Ae=(e,t,r,i)=>{let a=0,n=0,o=0;if(0!==t&&(n=e.readBits(1)),n){if(t===r){o=t-(s(e)+1)}else o=t-1;e.readBits(1),s(e);const n=i[o]??0;for(let t=0;t<=n;t++){e.readBits(1)||e.readBits(1)}a=i[o]}else{const t=s(e),r=s(e);for(let i=0;i<t;i++)s(e),e.readBits(1);for(let i=0;i<r;i++)s(e),e.readBits(1);a=t+r}return a},Re=(e,t)=>{if(e.readBits(1)){255===e.readBits(8)&&(e.readBits(16),e.readBits(16))}if(e.readBits(1)&&e.readBits(1),e.readBits(1)&&(e.readBits(3),e.readBits(1),e.readBits(1)&&(e.readBits(8),e.readBits(8),e.readBits(8))),e.readBits(1)&&(s(e),s(e)),e.readBits(1),e.readBits(1),e.readBits(1),e.readBits(1)&&(s(e),s(e),s(e),s(e)),e.readBits(1)&&(e.readBits(32),e.readBits(32),e.readBits(1)&&s(e),e.readBits(1)&&Me(e,!0,t)),e.readBits(1)){e.readBits(1),e.readBits(1),e.readBits(1);const t=s(e);return s(e),s(e),s(e),s(e),t}return 0},Me=(e,t,r)=>{let i=!1,a=!1,n=!1;i=1===e.readBits(1),a=1===e.readBits(1),(i||a)&&(n=1===e.readBits(1),n&&(e.readBits(8),e.readBits(5),e.readBits(1),e.readBits(5)),e.readBits(4),e.readBits(4),n&&e.readBits(4),e.readBits(5),e.readBits(5),e.readBits(5));for(let o=0;o<=r;o++){let t=!0;1===e.readBits(1)||(t=1===e.readBits(1));let r=!1;t?s(e):r=1===e.readBits(1);let o=1;if(!r){o=s(e)+1}i&&Ne(e,o,n),a&&Ne(e,o,n)}},Ne=(e,t,r)=>{for(let i=0;i<t;i++)s(e),s(e),r&&(s(e),s(e)),e.readBits(1)},ze=e=>{const t=new a(e);if(2!==t.readBits(2))return null;const r=t.readBits(1),s=(t.readBits(1)<<1)+r;3===s&&t.skipBits(1);if(1===t.readBits(1))return null;if(0!==t.readBits(1))return null;t.skipBits(2);if(4817730!==t.readBits(24))return null;let n=8;if(s>=2){n=t.readBits(1)?12:10}const o=t.readBits(3);let c=0,l=0;if(7!==o){if(l=t.readBits(1),1===s||3===s){const e=t.readBits(1),r=t.readBits(1);c=e||r?e&&!r?2:1:3,t.skipBits(1)}else c=1}else c=3,l=1;const d=(t.readBits(16)+1)*(t.readBits(16)+1);let u=i(ie).level;for(const i of ie)if(d<=i.maxPictureSize){u=i.level;break}return{profile:s,level:u,bitDepth:n,chromaSubsampling:c,videoFullRangeFlag:l,colourPrimaries:2===o?1:1===o?6:2,transferCharacteristics:2===o?1:1===o?6:2,matrixCoefficients:7===o?0:2===o?1:1===o?6:2}},Oe=function*(e){const r=new a(e),i=()=>{let e=0;for(let t=0;t<8;t++){const i=r.readAlignedByte();if(e|=(127&i)<<7*t,!(128&i))break;if(7===t&&128&i)return null}return e>=2**32-1?null:e};for(;r.getBitsLeft()>=8;){r.skipBits(1);const a=r.readBits(4),s=r.readBits(1),n=r.readBits(1);let o;if(r.skipBits(1),s&&r.skipBits(8),n){const e=i();if(null===e)return;o=e}else o=Math.floor(r.getBitsLeft()/8);t(r.pos%8===0),yield{type:a,data:e.subarray(r.pos/8,r.pos/8+o)},r.skipBits(8*o)}},Le=e=>{for(const{type:t,data:r}of Oe(e)){if(1!==t)continue;const e=new a(r),i=e.readBits(3);e.readBits(1);const s=e.readBits(1);let n=0,o=0,c=0;if(s)n=e.readBits(5);else{if(e.readBits(1)){e.skipBits(32),e.skipBits(32);if(e.readBits(1))return null}const t=e.readBits(1);t&&(c=e.readBits(5),e.skipBits(32),e.skipBits(5),e.skipBits(5));const r=e.readBits(5);for(let i=0;i<=r;i++){e.skipBits(12);const r=e.readBits(5);if(0===i&&(n=r),r>7){const t=e.readBits(1);0===i&&(o=t)}if(t){if(e.readBits(1)){const t=c+1;e.skipBits(t),e.skipBits(t),e.skipBits(1)}}e.readBits(1)&&e.skipBits(4)}}const l=e.readBits(4),d=e.readBits(4),u=l+1;e.skipBits(u);const h=d+1;e.skipBits(h);let m=0;if(m=s?0:e.readBits(1),m&&(e.skipBits(4),e.skipBits(3)),e.skipBits(1),e.skipBits(1),e.skipBits(1),!s){e.skipBits(1),e.skipBits(1),e.skipBits(1),e.skipBits(1);const t=e.readBits(1);t&&(e.skipBits(1),e.skipBits(1));let r=0;if(r=e.readBits(1)?2:e.readBits(1),r>0){e.readBits(1)||e.skipBits(1)}t&&e.skipBits(3)}e.skipBits(1),e.skipBits(1),e.skipBits(1);const f=e.readBits(1);let p=8;if(2===i&&f){p=e.readBits(1)?12:10}else i<=2&&(p=f?10:8);let g=0;1!==i&&(g=e.readBits(1));let k=1,b=1,T=0;return g||(0===i?(k=1,b=1):1===i?(k=0,b=0):12===p&&(k=e.readBits(1),k&&(b=e.readBits(1))),k&&b&&(T=e.readBits(2))),{profile:i,level:n,tier:o,bitDepth:p,monochrome:g,chromaSubsamplingX:k,chromaSubsamplingY:b,chromaSamplePosition:T}}return null},Ue=[480,960,1920,2880,480,960,1920,2880,480,960,1920,2880,480,960,480,960,120,240,480,960,120,240,480,960,120,240,480,960,120,240,480,960],Ve=e=>{if(e.length<7)throw new Error("Setup header is too short.");if(5!==e[0])throw new Error("Wrong packet type in Setup header.");if("vorbis"!==String.fromCharCode(...e.slice(1,7)))throw new Error("Invalid packet signature in Setup header.");const t=e.length,r=new Uint8Array(t);for(let a=0;a<t;a++)r[a]=e[t-1-a];const i=new a(r);let s=0;for(;i.getBitsLeft()>97;)if(1===i.readBits(1)){s=i.pos;break}if(0===s)throw new Error("Invalid Setup header: framing bit not found.");let n=0,o=!1,c=0;for(;i.getBitsLeft()>=97;){const e=i.pos,t=i.readBits(8),r=i.readBits(16),a=i.readBits(16);if(t>63||0!==r||0!==a){i.pos=e;break}if(i.skipBits(1),n++,n>64)break;i.clone().readBits(6)+1===n&&(o=!0,c=n)}if(!o)throw new Error("Invalid Setup header: mode header not found.");if(c>63)throw new Error(`Unsupported mode count: ${c}.`);const l=c;i.pos=0,i.skipBits(s);const d=Array(l).fill(0);for(let a=l-1;a>=0;a--)i.skipBits(40),d[a]=i.readBits(1);return{modeBlockflags:d}},qe=(e,r,i)=>{switch(e){case"avc":{const e=Se(i,r);let t=e.some(e=>ve(e)===fe.IDR);if(!t&&(!K()||(()=>{if(null!==$)return $;if("undefined"===typeof navigator)return 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null;return 0===t.readBits(2)?"key":"delta"}return null}default:C(e),t(!1)}};var He,We;(We=He||(He={}))[We.STREAMINFO=0]="STREAMINFO",We[We.VORBIS_COMMENT=4]="VORBIS_COMMENT",We[We.PICTURE=6]="PICTURE";const je=(e,t)=>{var r,i;const a=c(e);let s=0;const n=a.getUint32(s,!0);s+=4;const o=l.decode(e.subarray(s,s+n));s+=n,n>0&&(t.raw??(t.raw={}),(r=t.raw).vendor??(r.vendor=o));const d=a.getUint32(s,!0);s+=4;for(let u=0;u<d;u++){const r=a.getUint32(s,!0);s+=4;const n=l.decode(e.subarray(s,s+r));s+=r;const o=n.indexOf("=");if(-1===o)continue;const d=n.slice(0,o).toUpperCase(),u=n.slice(o+1);switch(t.raw??(t.raw={}),(i=t.raw)[d]??(i[d]=u),d){case"TITLE":t.title??(t.title=u);break;case"DESCRIPTION":t.description??(t.description=u);break;case"ARTIST":t.artist??(t.artist=u);break;case"ALBUM":t.album??(t.album=u);break;case"ALBUMARTIST":t.albumArtist??(t.albumArtist=u);break;case"COMMENT":t.comment??(t.comment=u);break;case"LYRICS":t.lyrics??(t.lyrics=u);break;case"TRACKNUMBER":{const e=u.split("/"),r=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(r)&&r>0&&(t.trackNumber??(t.trackNumber=r)),i&&Number.isInteger(i)&&i>0&&(t.tracksTotal??(t.tracksTotal=i))}break;case"TRACKTOTAL":{const e=Number.parseInt(u,10);Number.isInteger(e)&&e>0&&(t.tracksTotal??(t.tracksTotal=e))}break;case"DISCNUMBER":{const e=u.split("/"),r=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(r)&&r>0&&(t.discNumber??(t.discNumber=r)),i&&Number.isInteger(i)&&i>0&&(t.discsTotal??(t.discsTotal=i))}break;case"DISCTOTAL":{const e=Number.parseInt(u,10);Number.isInteger(e)&&e>0&&(t.discsTotal??(t.discsTotal=e))}break;case"DATE":{const e=new Date(u);Number.isNaN(e.getTime())||(t.date??(t.date=e))}break;case"GENRE":t.genre??(t.genre=u);break;case"METADATA_BLOCK_PICTURE":{const e=X(u),r=c(e),i=r.getUint32(0,!1),a=r.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+a)),n=r.getUint32(8+a,!1),o=l.decode(e.subarray(12+a,12+a+n)),d=r.getUint32(a+n+28),h=e.subarray(a+n+32,a+n+32+d);t.images??(t.images=[]),t.images.push({data:h,mimeType:s,kind:3===i?"coverFront":4===i?"coverBack":"unknown",name:void 0,description:o||void 0})}}}};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */class Ke{constructor(e){this.input=e}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */const $e=[],Qe=[],Ge=new Uint8Array(0);class Xe{constructor(e,t,r,i,a=-1,s,n){if(this.data=e,this.type=t,this.timestamp=r,this.duration=i,this.sequenceNumber=a,e===Ge&&void 0===s)throw new Error("Internal error: byteLength must be explicitly provided when constructing metadata-only packets.");if(void 0===s&&(s=e.byteLength),!(e instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if("key"!==t&&"delta"!==t)throw new TypeError('type must be either "key" or "delta".');if(!Number.isFinite(r))throw new TypeError("timestamp must be a number.");if(!Number.isFinite(i)||i<0)throw new TypeError("duration must be a non-negative number.");if(!Number.isFinite(a))throw new TypeError("sequenceNumber must be a number.");if(!Number.isInteger(s)||s<0)throw new TypeError("byteLength must be a non-negative integer.");if(void 0!==n&&("object"!==typeof n||!n))throw new TypeError("sideData, when provided, must be an object.");if(void 0!==n?.alpha&&!(n.alpha instanceof Uint8Array))throw new TypeError("sideData.alpha, when provided, must be a Uint8Array.");if(void 0!==n?.alphaByteLength&&(!Number.isInteger(n.alphaByteLength)||n.alphaByteLength<0))throw new TypeError("sideData.alphaByteLength, when provided, must be a non-negative integer.");this.byteLength=s,this.sideData=n??{},this.sideData.alpha&&void 0===this.sideData.alphaByteLength&&(this.sideData.alphaByteLength=this.sideData.alpha.byteLength)}get isMetadataOnly(){return this.data===Ge}get microsecondTimestamp(){return Math.trunc(N*this.timestamp)}get microsecondDuration(){return Math.trunc(N*this.duration)}toEncodedVideoChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("Your browser does not support EncodedVideoChunk.");return new EncodedVideoChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}alphaToEncodedVideoChunk(e=this.type){if(!this.sideData.alpha)throw new TypeError("This packet does not contain alpha side data.");if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("Your browser does not support EncodedVideoChunk.");return new EncodedVideoChunk({data:this.sideData.alpha,type:e,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}toEncodedAudioChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to an audio chunk.");if("undefined"===typeof EncodedAudioChunk)throw new Error("Your browser does not support EncodedAudioChunk.");return new EncodedAudioChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}static fromEncodedChunk(e,t){if(!(e instanceof EncodedVideoChunk||e instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedVideoChunk or EncodedAudioChunk.");const r=new Uint8Array(e.byteLength);return e.copyTo(r),new Xe(r,e.type,e.timestamp/1e6,(e.duration??0)/1e6,void 0,void 0,t)}clone(e){if(void 0!==e&&("object"!==typeof e||null===e))throw new TypeError("options, when provided, must be an object.");if(void 0!==e?.timestamp&&!Number.isFinite(e.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(void 0!==e?.duration&&!Number.isFinite(e.duration))throw new TypeError("options.duration, when provided, must be a number.");return new Xe(this.data,this.type,e?.timestamp??this.timestamp,e?.duration??this.duration,this.sequenceNumber,this.byteLength)}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
Y();let Ye=-1/0,Je=-1/0,Ze=null;"undefined"!==typeof FinalizationRegistry&&(Ze=new FinalizationRegistry(e=>{const t=Date.now();"video"===e.type?(t-Ye>=1e3&&(console.error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),Ye=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-Je>=1e3&&(console.error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),Je=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));const et=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],tt=new Set(et);class rt{get displayWidth(){return this.rotation%180===0?this.codedWidth:this.codedHeight}get displayHeight(){return this.rotation%180===0?this.codedHeight:this.codedWidth}get microsecondTimestamp(){return Math.trunc(N*this.timestamp)}get microsecondDuration(){return Math.trunc(N*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,r){if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!r||"object"!==typeof r)throw new TypeError("init must be an object.");if(void 0===r.format||!tt.has(r.format))throw new TypeError("init.format must be one of: "+et.join(", "));if(!Number.isInteger(r.codedWidth)||r.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(r.codedHeight)||r.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==r.rotation&&![0,90,180,270].includes(r.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(r.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==r.duration&&(!Number.isFinite(r.duration)||r.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");this._data=o(e).slice(),this._layout=r.layout??ct(r.format,r.codedWidth,r.codedHeight),this.format=r.format,this.codedWidth=r.codedWidth,this.codedHeight=r.codedHeight,this.rotation=r.rotation??0,this.timestamp=r.timestamp,this.duration=r.duration??0,this.colorSpace=new it(r.colorSpace)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==r?.rotation&&![0,90,180,270].includes(r.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==r?.timestamp&&!Number.isFinite(r?.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==r?.duration&&(!Number.isFinite(r.duration)||r.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");this._data=e,this._layout=null,this.format=e.format,this.codedWidth=e.displayWidth,this.codedHeight=e.displayHeight,this.rotation=r?.rotation??0,this.timestamp=r?.timestamp??e.timestamp/1e6,this.duration=r?.duration??(e.duration??0)/1e6,this.colorSpace=new it(e.colorSpace)}else{if(!("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas))throw new TypeError("Invalid data type: Must be a BufferSource or CanvasImageSource.");{if(!r||"object"!==typeof r)throw new TypeError("init must be an object.");if(void 0!==r.rotation&&![0,90,180,270].includes(r.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(r.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==r.duration&&(!Number.isFinite(r.duration)||r.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if("undefined"!==typeof VideoFrame)return new rt(new VideoFrame(e,{timestamp:Math.trunc(r.timestamp*N),duration:Math.trunc((r.duration??0)*N)||void 0}),r);let i=0,a=0;if("naturalWidth"in e?(i=e.naturalWidth,a=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,a=e.videoHeight):"width"in e&&(i=Number(e.width),a=Number(e.height)),!i||!a)throw new TypeError("Could not determine dimensions.");const s=new OffscreenCanvas(i,a),n=s.getContext("2d",{alpha:W(),willReadFrequently:!0});t(n),n.drawImage(e,0,0),this._data=s,this._layout=null,this.format="RGBX",this.codedWidth=i,this.codedHeight=a,this.rotation=r.rotation??0,this.timestamp=r.timestamp,this.duration=r.duration??0,this.colorSpace=new it({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}}Ze?.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return t(null!==this._data),at(this._data)?new rt(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation}):this._data instanceof Uint8Array?(t(this._layout),new rt(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation})):new rt(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation})}close(){this._closed||(Ze?.unregister(this),at(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){if(ot(e),this._closed)throw new Error("VideoSample is closed.");if(null===this.format)throw new Error("Cannot get allocation size when format is null. Sorry!");if(t(null!==this._data),!at(this._data)&&(e.colorSpace||e.format&&e.format!==this.format||e.layout||e.rect)){const t=this.toVideoFrame(),r=t.allocationSize(e);return t.close(),r}return at(this._data)?this._data.allocationSize(e):this._data instanceof Uint8Array?this._data.byteLength:this.codedWidth*this.codedHeight*4}async copyTo(e,r={}){if(!k(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(ot(r),this._closed)throw new Error("VideoSample is closed.");if(null===this.format)throw new Error("Cannot copy video sample data when format is null. Sorry!");if(t(null!==this._data),!at(this._data)&&(r.colorSpace||r.format&&r.format!==this.format||r.layout||r.rect)){const t=this.toVideoFrame(),i=await t.copyTo(e,r);return t.close(),i}if(at(this._data))return this._data.copyTo(e,r);if(this._data instanceof Uint8Array){t(this._layout);return o(e).set(this._data),this._layout}{const r=this._data.getContext("2d");t(r);const i=r.getImageData(0,0,this.codedWidth,this.codedHeight);return o(e).set(i.data),[{offset:0,stride:4*this.codedWidth}]}}toVideoFrame(){if(this._closed)throw new Error("VideoSample is closed.");return t(null!==this._data),at(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace}):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,r,i,a,s,n,o,c){let l=0,d=0,u=this.displayWidth,h=this.displayHeight,m=0,f=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(l=t,d=r,u=i,h=a,m=s,f=n,void 0!==o?(p=o,g=c):(p=u,g=h)):(m=t,f=r,void 0!==i&&(p=i,g=a)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(l))throw new TypeError("sx must be a number.");if(!Number.isFinite(d))throw new TypeError("sy must be a number.");if(!Number.isFinite(u)||u<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(m))throw new TypeError("dx must be a number.");if(!Number.isFinite(f))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:l,sy:d,sWidth:u,sHeight:h}=this._rotateSourceRegion(l,d,u,h,this.rotation));const k=this.toCanvasImageSource();e.save();const b=m+p/2,T=f+g/2;e.translate(b,T),e.rotate(this.rotation*Math.PI/180);const y=this.rotation%180===0?1:p/g;e.scale(1/y,y),e.drawImage(k,l,d,u,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&nt(t.crop,"options.");const r=e.canvas.width,i=e.canvas.height,a=t.rotation??this.rotation,[s,n]=a%180===0?[this.codedWidth,this.codedHeight]:[this.codedHeight,this.codedWidth];let o,c,l,d;t.crop&&st(t.crop,s,n);const{sx:u,sy:h,sWidth:m,sHeight:f}=this._rotateSourceRegion(t.crop?.left??0,t.crop?.top??0,t.crop?.width??s,t.crop?.height??n,a);if("fill"===t.fit)o=0,c=0,l=r,d=i;else{const[e,a]=t.crop?[t.crop.width,t.crop.height]:[s,n],u="contain"===t.fit?Math.min(r/e,i/a):Math.max(r/e,i/a);l=e*u,d=a*u,o=(r-l)/2,c=(i-d)/2}e.save();const p=a%180===0?1:l/d;e.translate(r/2,i/2),e.rotate(a*Math.PI/180),e.scale(1/p,p),e.translate(-r/2,-i/2),e.drawImage(this.toCanvasImageSource(),u,h,m,f,o,c,l,d),e.restore()}_rotateSourceRegion(e,t,r,i,a){return 90===a?[e,t,r,i]=[t,this.codedHeight-e-r,i,r]:180===a?[e,t]=[this.codedWidth-e-r,this.codedHeight-t-i]:270===a&&([e,t,r,i]=[this.codedWidth-t-i,e,i,r]),{sx:e,sy:t,sWidth:r,sHeight:i}}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(t(null!==this._data),this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}[Symbol.dispose](){this.close()}}class it{constructor(e){this.primaries=e?.primaries??null,this.transfer=e?.transfer??null,this.matrix=e?.matrix??null,this.fullRange=e?.fullRange??null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const at=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,st=(e,r,i)=>{e.left=Math.min(e.left,r),e.top=Math.min(e.top,i),e.width=Math.min(e.width,r-e.left),e.height=Math.min(e.height,i-e.top),t(e.width>=0),t(e.height>=0)},nt=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},ot=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},ct=(e,t,r)=>{const i=lt(e),a=[];let s=0;for(const n of i){const e=Math.ceil(t/n.widthDivisor),i=Math.ceil(r/n.heightDivisor),o=e*n.sampleBytes,c=o*i;a.push({offset:s,stride:o}),s+=c}return a},lt=e=>{const r=(e,t,r,i,a)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:r,heightDivisor:i},{sampleBytes:t,widthDivisor:r,heightDivisor:i}];return a&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return r(1,1,2,2,!1);case"I420P10":case"I420P12":return r(2,2,2,2,!1);case"I420A":return r(1,1,2,2,!0);case"I420AP10":case"I420AP12":return r(2,2,2,2,!0);case"I422":return r(1,1,2,1,!1);case"I422P10":case"I422P12":return r(2,2,2,1,!1);case"I422A":return r(1,1,2,1,!0);case"I422AP10":case"I422AP12":return r(2,2,2,1,!0);case"I444":return r(1,1,1,1,!1);case"I444P10":case"I444P12":return r(2,2,1,1,!1);case"I444A":return r(1,1,1,1,!0);case"I444AP10":case"I444AP12":return r(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:C(e),t(!1)}},dt=new Set(["f32","f32-planar","s16","s16-planar","s32","s32-planar","u8","u8-planar"]);class ut{get microsecondTimestamp(){return Math.trunc(N*this.timestamp)}get microsecondDuration(){return Math.trunc(N*this.duration)}constructor(e){if(this._closed=!1,gt(e)){if(null===e.format)throw new TypeError("AudioData with null format is not supported.");this._data=e,this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=e.numberOfFrames,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp/1e6,this.duration=e.numberOfFrames/e.sampleRate}else{if(!e||"object"!==typeof e)throw new TypeError("Invalid AudioDataInit: must be an object.");if(!dt.has(e.format))throw new TypeError("Invalid AudioDataInit: invalid format.");if(!Number.isFinite(e.sampleRate)||e.sampleRate<=0)throw new TypeError("Invalid AudioDataInit: sampleRate must be > 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(e?.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(ht(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let r;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)r=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");r=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const i=this.numberOfFrames*this.numberOfChannels*ht(this.format);if(r.byteLength<i)throw new TypeError("Invalid AudioDataInit: insufficient data size.");this._data=r}Ze?.register(this,{type:"audio",data:this._data},this)}allocationSize(e){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(!Number.isInteger(e.planeIndex)||e.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==e.format&&!dt.has(e.format))throw new TypeError("Invalid format.");if(void 0!==e.frameOffset&&(!Number.isInteger(e.frameOffset)||e.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==e.frameCount&&(!Number.isInteger(e.frameCount)||e.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const t=e.format??this.format,r=e.frameOffset??0;if(r>=this.numberOfFrames)throw new RangeError("frameOffset out of range");const i=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-r;if(i>this.numberOfFrames-r)throw new RangeError("frameCount out of range");const a=ht(t),s=mt(t);if(s&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!s&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(s?i:i*this.numberOfChannels)*a}copyTo(e,t){if(!k(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!dt.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{planeIndex:r,format:i,frameCount:a,frameOffset:s}=t,n=this.format,o=i??this.format;if(!o)throw new Error("Destination format not determined");const l=this.numberOfFrames,d=this.numberOfChannels,u=s??0;if(u>=l)throw new RangeError("frameOffset out of range");const h=void 0!==a?a:l-u;if(h>l-u)throw new RangeError("frameCount out of range");const m=ht(o),f=mt(o);if(f&&r>=d)throw new RangeError("planeIndex out of range");if(!f&&0!==r)throw new RangeError("planeIndex out of range");const p=(f?h:h*d)*m;if(e.byteLength<p)throw new RangeError("Destination buffer is too small");const g=c(e),b=pt(o);if(gt(this._data))q()&&d>2&&o!==n?kt(this._data,g,n,o,d,r,u,h):this._data.copyTo(e,{planeIndex:r,frameOffset:u,frameCount:h,format:o});else{const e=this._data,t=c(e),i=ft(n),a=ht(n),s=mt(n);for(let n=0;n<h;n++)if(f){let e;e=s?(r*l+(n+u))*a:((n+u)*d+r)*a;b(g,n*m,i(t,e))}else for(let e=0;e<d;e++){let r;r=s?(e*l+(n+u))*a:((n+u)*d+e)*a;b(g,(n*d+e)*m,i(t,r))}}}clone(){if(this._closed)throw new Error("AudioSample is closed.");if(gt(this._data)){const e=new ut(this._data.clone());return e.setTimestamp(this.timestamp),e}return new ut({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp,data:this._data})}close(){this._closed||(Ze?.unregister(this),gt(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");if(gt(this._data)){if(this._data.timestamp===this.microsecondTimestamp)return this._data.clone();if(mt(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let r=0;r<this.numberOfChannels;r++)this.copyTo(new Uint8Array(t,r*e,e),{planeIndex:r,format:this.format});return new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:t})}{const e=new ArrayBuffer(this.allocationSize({planeIndex:0,format:this.format}));return this.copyTo(e,{planeIndex:0,format:this.format}),new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:e})}}return new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}toAudioBuffer(){if(this._closed)throw new Error("AudioSample is closed.");const e=new AudioBuffer({numberOfChannels:this.numberOfChannels,length:this.numberOfFrames,sampleRate:this.sampleRate}),t=new Float32Array(this.allocationSize({planeIndex:0,format:"f32-planar"})/4);for(let r=0;r<this.numberOfChannels;r++)this.copyTo(t,{planeIndex:r,format:"f32-planar"}),e.copyToChannel(t,r);return e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}[Symbol.dispose](){this.close()}static*_fromAudioBuffer(e,t){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");const r=e.numberOfChannels,i=e.sampleRate,a=e.length,s=Math.floor(24e4/r);let n=0,o=a;for(;o>0;){const a=Math.min(s,o),c=new Float32Array(r*a);for(let t=0;t<r;t++)e.copyFromChannel(c.subarray(t*a,(t+1)*a),t,n);yield new ut({format:"f32-planar",sampleRate:i,numberOfFrames:a,numberOfChannels:r,timestamp:t+n/i,data:c}),n+=a,o-=a}}static fromAudioBuffer(e,t){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");const r=e.numberOfChannels,i=e.sampleRate,a=e.length,s=Math.floor(24e4/r);let n=0,o=a;const c=[];for(;o>0;){const a=Math.min(s,o),l=new Float32Array(r*a);for(let t=0;t<r;t++)e.copyFromChannel(l.subarray(t*a,(t+1)*a),t,n);const d=new ut({format:"f32-planar",sampleRate:i,numberOfFrames:a,numberOfChannels:r,timestamp:t+n/i,data:l});c.push(d),n+=a,o-=a}return c}}const ht=e=>{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},mt=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},ft=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},pt=e=>{switch(e){case"u8":case"u8-planar":return(e,t,r)=>e.setUint8(t,F(127.5*(r+1),0,255));case"s16":case"s16-planar":return(e,t,r)=>e.setInt16(t,F(Math.round(32767*r),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,r)=>e.setInt32(t,F(Math.round(2147483647*r),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,r)=>e.setFloat32(t,r,!0)}},gt=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,kt=(e,t,r,i,a,s,n,o)=>{const l=ft(r),d=pt(i),u=ht(r),h=ht(i),m=mt(r);if(mt(i))if(m){const i=new ArrayBuffer(o*u),a=c(i);e.copyTo(i,{planeIndex:s,frameOffset:n,frameCount:o,format:r});for(let e=0;e<o;e++){d(t,e*h,l(a,e*u))}}else{const i=new ArrayBuffer(o*a*u),m=c(i);e.copyTo(i,{planeIndex:0,frameOffset:n,frameCount:o,format:r});for(let e=0;e<o;e++){d(t,e*h,l(m,(e*a+s)*u))}}else if(m){const i=new ArrayBuffer(o*u),s=c(i);for(let c=0;c<a;c++){e.copyTo(i,{planeIndex:c,frameOffset:n,frameCount:o,format:r});for(let e=0;e<o;e++){d(t,(e*a+c)*h,l(s,e*u))}}}else{const i=new ArrayBuffer(o*a*u),s=c(i);e.copyTo(i,{planeIndex:0,frameOffset:n,frameCount:o,format:r});for(let e=0;e<o;e++)for(let r=0;r<a;r++){const i=e*a+r;d(t,i*h,l(s,i*u))}}},bt=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.")},Tt=e=>{if(!J(e))throw new TypeError("timestamp must be a number.")},yt=(e,t,r)=>r.verifyKeyPackets?t.then(async t=>{if(!t||"delta"===t.type)return t;const r=await e.determinePacketType(t);return r&&(t.type=r),t}):t;class wt{constructor(e){if(!(e instanceof At))throw new TypeError("track must be an InputTrack.");this._track=e}getFirstPacket(e={}){if(bt(e),this._track.input._disposed)throw new ea;return yt(this._track,this._track._backing.getFirstPacket(e),e)}getPacket(e,t={}){if(Tt(e),bt(t),this._track.input._disposed)throw new ea;return yt(this._track,this._track._backing.getPacket(e,t),t)}getNextPacket(e,t={}){if(!(e instanceof Xe))throw new TypeError("packet must be an EncodedPacket.");if(bt(t),this._track.input._disposed)throw new ea;return yt(this._track,this._track._backing.getNextPacket(e,t),t)}async getKeyPacket(e,r={}){if(Tt(e),bt(r),this._track.input._disposed)throw new ea;if(!r.verifyKeyPackets)return this._track._backing.getKeyPacket(e,r);const i=await this._track._backing.getKeyPacket(e,r);if(!i)return i;t("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getKeyPacket(i.timestamp-1/this._track.timeResolution,r):i}async getNextKeyPacket(e,r={}){if(!(e instanceof Xe))throw new TypeError("packet must be an EncodedPacket.");if(bt(r),this._track.input._disposed)throw new ea;if(!r.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,r);const i=await this._track._backing.getNextKeyPacket(e,r);if(!i)return i;t("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getNextKeyPacket(i,r):i}packets(e,t,r={}){if(void 0!==e&&!(e instanceof Xe))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!r?.metadataOnly)throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Xe))throw new TypeError("endPacket must be an EncodedPacket.");if(bt(r),this._track.input._disposed)throw new ea;const i=[];let{promise:a,resolve:s}=v(),{promise:n,resolve:o}=v(),c=!1,l=!1,d=null;const u=[],h=()=>Math.max(2,u.length);(async()=>{let d=e??await this.getFirstPacket(r);for(;d&&!l&&!this._track.input._disposed&&!(t&&d.sequenceNumber>=t?.sequenceNumber);)i.length>h()?(({promise:n,resolve:o}=v()),await n):(i.push(d),s(),({promise:a,resolve:s}=v()),d=await this.getNextPacket(d,r));c=!0,s()})().catch(e=>{d||(d=e,s())});const m=this._track;return{async next(){for(;;){if(m.input._disposed)throw new ea;if(l)return{value:void 0,done:!0};if(d)throw d;if(i.length>0){const e=i.shift(),t=performance.now();for(u.push(t);u.length>0&&t-u[0]>=1e3;)u.shift();return o(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};await a}},return:async()=>(l=!0,o(),s(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}class St{constructor(e,t){this.onSample=e,this.onError=t}}class It{mediaSamplesInRange(e=0,t=1/0){Tt(e),Tt(t);const r=[];let i=!1,a=null,{promise:s,resolve:n}=v(),{promise:o,resolve:c}=v(),l=!1,d=!1,u=!1,h=null;(async()=>{const m=await this._createDecoder(o=>{c(),o.timestamp>=t&&(d=!0),d?o.close():(a&&(o.timestamp>e?(r.push(a),i=!0):a.close()),o.timestamp>=e&&(r.push(o),i=!0),a=i?null:o,r.length>0&&(n(),({promise:s,resolve:n}=v())))},e=>{h||(h=e,n())}),f=this._createPacketSink(),p=await f.getKeyPacket(e,{verifyKeyPackets:!0})??await f.getFirstPacket();let g=p;const k=f.packets(p??void 0,void 0);for(await k.next();g&&!d&&!this._track.input._disposed;){const e=vt(r.length);if(r.length+m.getDecodeQueueSize()>e){({promise:o,resolve:c}=v()),await o;continue}m.decode(g);const t=await k.next();if(t.done)break;g=t.value}await k.return(),u||this._track.input._disposed||await m.flush(),m.close(),!i&&a&&r.push(a),l=!0,n()})().catch(e=>{h||(h=e,n())});const m=this._track,f=()=>{a?.close();for(const e of r)e.close()};return{async next(){for(;;){if(m.input._disposed)throw f(),new ea;if(u)return{value:void 0,done:!0};if(h)throw f(),h;if(r.length>0){const e=r.shift();return c(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};await s}},return:async()=>(u=!0,d=!0,c(),n(),f(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const r=async function*(e){Symbol.iterator in e?yield*e[Symbol.iterator]():yield*e[Symbol.asyncIterator]()}(e),i=[],a=[];let{promise:s,resolve:n}=v(),{promise:o,resolve:c}=v(),l=!1,d=!1,u=null;const h=e=>{a.push(e),n(),({promise:s,resolve:n}=v())};(async()=>{const e=await this._createDecoder(e=>{if(c(),d)return void e.close();let t=0;for(;i.length>0&&e.timestamp-i[0]>-1e-10;)t++,i.shift();if(t>0)for(let r=0;r<t;r++)h(r<t-1?e.clone():e);else e.close()},e=>{u||(u=e,n())}),s=this._createPacketSink();let m=null,f=null,p=-1;const g=async()=>{t(f);let r=f;for(e.decode(r);r.sequenceNumber<p;){const i=vt(a.length);for(;a.length+e.getDecodeQueueSize()>i&&!d;)({promise:o,resolve:c}=v()),await o;if(d)break;const n=await s.getNextPacket(r);t(n),e.decode(n),r=n}p=-1},k=async()=>{await e.flush();for(let e=0;e<i.length;e++)h(null);i.length=0};for await(const t of r){if(Tt(t),d||this._track.input._disposed)break;const e=await s.getPacket(t),r=e&&await s.getKeyPacket(t,{verifyKeyPackets:!0});r?(m&&(r.sequenceNumber!==f.sequenceNumber||e.timestamp<m.timestamp)&&(await g(),await k()),i.push(e.timestamp),p=Math.max(e.sequenceNumber,p),m=e,f=r):(-1!==p&&(await g(),await k()),h(null),m=null)}d||this._track.input._disposed||(-1!==p&&await g(),await k()),e.close(),l=!0,n()})().catch(e=>{u||(u=e,n())});const m=this._track,f=()=>{for(const e of a)e?.close()};return{async next(){for(;;){if(m.input._disposed)throw f(),new ea;if(d)return{value:void 0,done:!0};if(u)throw f(),u;if(a.length>0){const e=a.shift();return t(void 0!==e),c(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};await s}},return:async()=>(d=!0,c(),n(),f(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}const vt=e=>0===e?40:8;class Pt extends St{constructor(e,r,i,a,s,n){super(e,r),this.codec=i,this.decoderConfig=a,this.rotation=s,this.timeResolution=n,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new U,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.mergerCreationFailed=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1;const l=$e.find(e=>e.supports(i,a));if(l)this.customDecoder=new l,this.customDecoder.codec=i,this.customDecoder.config=a,this.customDecoder.onSample=e=>{if(!(e instanceof rt))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{const e=e=>{if(this.alphaQueue.length>0){const r=this.alphaQueue.shift();t(void 0!==r),this.mergeAlpha(e,r)}else this.colorQueue.push(e)};if("avc"===i&&this.decoderConfig.description&&K()){const e=(e=>{try{const t=c(e);let r=0;const i=t.getUint8(r++),a=t.getUint8(r++),s=t.getUint8(r++),n=t.getUint8(r++),o=3&t.getUint8(r++),l=31&t.getUint8(r++),d=[];for(let c=0;c<l;c++){const i=t.getUint16(r,!1);r+=2,d.push(e.subarray(r,r+i)),r+=i}const u=t.getUint8(r++),h=[];for(let c=0;c<u;c++){const i=t.getUint16(r,!1);r+=2,h.push(e.subarray(r,r+i)),r+=i}const m={configurationVersion:i,avcProfileIndication:a,profileCompatibility:s,avcLevelIndication:n,lengthSizeMinusOne:o,sequenceParameterSets:d,pictureParameterSets:h,chromaFormat:null,bitDepthLumaMinus8:null,bitDepthChromaMinus8:null,sequenceParameterSetExt:null};if((100===a||110===a||122===a||144===a)&&r+4<=e.length){const i=3&t.getUint8(r++),a=7&t.getUint8(r++),s=7&t.getUint8(r++),n=t.getUint8(r++);m.chromaFormat=i,m.bitDepthLumaMinus8=a,m.bitDepthChromaMinus8=s;const o=[];for(let c=0;c<n;c++){const i=t.getUint16(r,!1);r+=2,o.push(e.subarray(r,r+i)),r+=i}m.sequenceParameterSetExt=o}return m}catch(t){return console.error("Error deserializing AVC Decoder Configuration Record:",t),null}})(o(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=xe(e.sequenceParameterSets[0]);t&&0===t.frameMbsOnlyFlag&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"})}}const r=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(r){this.onError(r)}},error:e=>{e.stack=r,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(t(this.decoder),Math.max(this.decoder.decodeQueueSize,this.alphaDecoder?.decodeQueueSize??0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).then(()=>this.customDecoderQueueSize--);else{if(t(this.decoder),q()||I(this.inputTimestamps,e.timestamp,e=>e),K()&&0===this.currentPacketIndex&&"avc"===this.codec){const t=Se(e.data,this.decoderConfig).filter(e=>{const t=ve(e);return!(t>=20&&t<=31)}),r=Ie(t,this.decoderConfig);e=new Xe(r,e.type,e.timestamp,e.duration)}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha||this.mergerCreationFailed)return void this.pushNullAlphaFrame();if(!this.merger)try{this.merger=new xt}catch(i){return console.error("Due to an error, only color data will be decoded.",i),this.mergerCreationFailed=!0,void this.decodeAlphaData(e)}if(!this.alphaDecoder){const e=e=>{if(this.alphaDecoderQueueSize--,this.colorQueue.length>0){const r=this.colorQueue.shift();t(void 0!==r),this.mergeAlpha(r,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();t(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null)},r=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=r,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const r=qe(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===r),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(r??e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){return Ce(e,this.decoderConfig).some(e=>{const t=_e(e);return t===ge.RASL_N||t===ge.RASL_R})}sampleHandler(e){if(q()){if(this.sampleQueue.length>0&&e.timestamp>=i(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}I(this.sampleQueue,e,e=>e.timestamp)}else{const r=this.inputTimestamps.shift();t(void 0!==r),e.setTimestamp(r),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}mergeAlpha(e,r){if(!r){const t=new rt(e);return void this.sampleHandler(t)}t(this.merger),this.merger.update(e,r),e.close(),r.close();const i=new VideoFrame(this.merger.canvas,{timestamp:e.timestamp,duration:e.duration??void 0}),a=new rt(i);this.sampleHandler(a)}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(t(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),q()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(t(this.decoder),this.decoder.close(),this.alphaDecoder?.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.merger?.close());for(const e of this.sampleQueue)e.close();this.sampleQueue.length=0}}class xt{constructor(){"undefined"!==typeof OffscreenCanvas?this.canvas=new OffscreenCanvas(300,150):this.canvas=document.createElement("canvas");const e=this.canvas.getContext("webgl2",{premultipliedAlpha:!1});if(!e)throw new Error("Couldn't acquire WebGL 2 context.");this.gl=e,this.program=this.createProgram(),this.vao=this.createVAO(),this.colorTexture=this.createTexture(),this.alphaTexture=this.createTexture(),this.gl.useProgram(this.program),this.gl.uniform1i(this.gl.getUniformLocation(this.program,"u_colorTexture"),0),this.gl.uniform1i(this.gl.getUniformLocation(this.program,"u_alphaTexture"),1)}createProgram(){const e=this.createShader(this.gl.VERTEX_SHADER,"#version 300 es\n\t\t\tin vec2 a_position;\n\t\t\tin vec2 a_texCoord;\n\t\t\tout vec2 v_texCoord;\n\t\t\t\n\t\t\tvoid main() {\n\t\t\t\tgl_Position = vec4(a_position, 0.0, 1.0);\n\t\t\t\tv_texCoord = a_texCoord;\n\t\t\t}\n\t\t"),t=this.createShader(this.gl.FRAGMENT_SHADER,"#version 300 es\n\t\t\tprecision highp float;\n\t\t\t\n\t\t\tuniform sampler2D u_colorTexture;\n\t\t\tuniform sampler2D u_alphaTexture;\n\t\t\tin vec2 v_texCoord;\n\t\t\tout vec4 fragColor;\n\t\t\t\n\t\t\tvoid main() {\n\t\t\t\tvec3 color = texture(u_colorTexture, v_texCoord).rgb;\n\t\t\t\tfloat alpha = texture(u_alphaTexture, v_texCoord).r;\n\t\t\t\tfragColor = vec4(color, alpha);\n\t\t\t}\n\t\t"),r=this.gl.createProgram();return this.gl.attachShader(r,e),this.gl.attachShader(r,t),this.gl.linkProgram(r),r}createShader(e,t){const r=this.gl.createShader(e);return this.gl.shaderSource(r,t),this.gl.compileShader(r),r}createVAO(){const e=this.gl.createVertexArray();this.gl.bindVertexArray(e);const t=new Float32Array([-1,-1,0,1,1,-1,1,1,-1,1,0,0,1,1,1,0]),r=this.gl.createBuffer();this.gl.bindBuffer(this.gl.ARRAY_BUFFER,r),this.gl.bufferData(this.gl.ARRAY_BUFFER,t,this.gl.STATIC_DRAW);const i=this.gl.getAttribLocation(this.program,"a_position"),a=this.gl.getAttribLocation(this.program,"a_texCoord");return this.gl.enableVertexAttribArray(i),this.gl.vertexAttribPointer(i,2,this.gl.FLOAT,!1,16,0),this.gl.enableVertexAttribArray(a),this.gl.vertexAttribPointer(a,2,this.gl.FLOAT,!1,16,8),e}createTexture(){const e=this.gl.createTexture();return this.gl.bindTexture(this.gl.TEXTURE_2D,e),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_S,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_T,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MIN_FILTER,this.gl.LINEAR),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MAG_FILTER,this.gl.LINEAR),e}update(e,t){e.displayWidth===this.canvas.width&&e.displayHeight===this.canvas.height||(this.canvas.width=e.displayWidth,this.canvas.height=e.displayHeight),this.gl.activeTexture(this.gl.TEXTURE0),this.gl.bindTexture(this.gl.TEXTURE_2D,this.colorTexture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.gl.RGBA,this.gl.UNSIGNED_BYTE,e),this.gl.activeTexture(this.gl.TEXTURE1),this.gl.bindTexture(this.gl.TEXTURE_2D,this.alphaTexture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.gl.RGBA,this.gl.UNSIGNED_BYTE,t),this.gl.viewport(0,0,this.canvas.width,this.canvas.height),this.gl.clear(this.gl.COLOR_BUFFER_BIT),this.gl.bindVertexArray(this.vao),this.gl.drawArrays(this.gl.TRIANGLE_STRIP,0,4)}close(){this.gl.getExtension("WEBGL_lose_context")?.loseContext(),this.gl=null}}class Ct extends It{constructor(e){if(!(e instanceof Rt))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._track=e}async _createDecoder(e,r){if(!(await this._track.canDecode()))throw new Error("This video track cannot be decoded by this browser. Make sure to check decodability before using a track.");const i=this._track.codec,a=this._track.rotation,s=await this._track.getDecoderConfig(),n=this._track.timeResolution;return t(i&&s),new Pt(e,r,i,s,a,n)}_createPacketSink(){return new wt(this._track)}async getSample(e){Tt(e);for await(const t of this.mediaSamplesAtTimestamps([e]))return t;throw new Error("Internal error: Iterator returned nothing.")}samples(e=0,t=1/0){return this.mediaSamplesInRange(e,t)}samplesAtTimestamps(e){return this.mediaSamplesAtTimestamps(e)}}class _t{constructor(e,t={}){if(this._nextCanvasIndex=0,!(e instanceof Rt))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&nt(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");const r=t.rotation??e.rotation,[i,a]=r%180===0?[e.codedWidth,e.codedHeight]:[e.codedHeight,e.codedWidth],s=t.crop;s&&st(s,i,a);let[n,o]=s?[s.width,s.height]:[i,a];const c=n/o;void 0!==t.width&&void 0===t.height?(n=t.width,o=Math.round(n/c)):void 0===t.width&&void 0!==t.height?(o=t.height,n=Math.round(o*c)):void 0!==t.width&&void 0!==t.height&&(n=t.width,o=t.height),this._videoTrack=e,this._alpha=t.alpha??!1,this._width=n,this._height=o,this._rotation=r,this._crop=s,this._fit=t.fit??"fill",this._videoSampleSink=new Ct(e),this._canvasPool=Array.from({length:t.poolSize??0},()=>null)}_videoSampleToWrappedCanvas(e){let r=this._canvasPool[this._nextCanvasIndex],i=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=this._width,r.height=this._height):r=new OffscreenCanvas(this._width,this._height),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),i=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const a=r.getContext("2d",{alpha:this._alpha||W()});t(a),a.resetTransform(),i||(!this._alpha&&W()?(a.fillStyle="black",a.fillRect(0,0,this._width,this._height)):a.clearRect(0,0,this._width,this._height)),e.drawWithFit(a,{fit:this._fit,rotation:this._rotation,crop:this._crop});const s={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),s}async getCanvas(e){Tt(e);const t=await this._videoSampleSink.getSample(e);return t&&this._videoSampleToWrappedCanvas(t)}canvases(e=0,t=1/0){return E(this._videoSampleSink.samples(e,t),e=>this._videoSampleToWrappedCanvas(e))}canvasesAtTimestamps(e){return E(this._videoSampleSink.samplesAtTimestamps(e),e=>e&&this._videoSampleToWrappedCanvas(e))}}class Bt extends St{constructor(e,t,r,i){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new U,this.customDecoderQueueSize=0,this.currentTimestamp=null;const a=t=>{(null===this.currentTimestamp||Math.abs(t.timestamp-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=t.timestamp);const r=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const a=i.sampleRate;t.setTimestamp(Math.round(r*a)/a),e(t)},s=Qe.find(e=>e.supports(r,i));if(s)this.customDecoder=new s,this.customDecoder.codec=r,this.customDecoder.config=i,this.customDecoder.onSample=e=>{if(!(e instanceof ut))throw new TypeError("The argument passed to onSample must be an AudioSample.");a(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{a(new ut(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(i)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(t(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).then(()=>this.customDecoderQueueSize--)):(t(this.decoder),this.decoder.decode(e.toEncodedAudioChunk()))}flush(){return this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(t(this.decoder),this.decoder.flush())}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(t(this.decoder),this.decoder.close())}}class Et extends St{constructor(e,r,i){super(e,r),this.decoderConfig=i,this.currentTimestamp=null,t(re.includes(i.codec)),this.codec=i.codec;const{dataType:a,sampleSize:s,littleEndian:n}=me(this.codec);switch(this.inputSampleSize=s,s){case 1:"unsigned"===a?this.readInputValue=(e,t)=>e.getUint8(t)-128:"signed"===a?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===a?this.readInputValue=(e,t)=>(e=>{let t=0,r=0,i=~e;128&i&&(i&=-129,t=-1),r=5+((240&i)>>4);const a=(1<<r|(15&i)<<r-4|1<<r-5)-33;return 0===t?a:-a})(e.getUint8(t)):"alaw"===a?this.readInputValue=(e,t)=>(e=>{let t=0,r=0,i=85^e;128&i&&(i&=-129,t=-1),r=4+((240&i)>>4);let a=0;return a=4!==r?1<<r|(15&i)<<r-4|1<<r-5:i<<1|1,0===t?a:-a})(e.getUint8(t)):t(!1);break;case 2:"unsigned"===a?this.readInputValue=(e,t)=>e.getUint16(t,n)-32768:"signed"===a?this.readInputValue=(e,t)=>e.getInt16(t,n):t(!1);break;case 3:"unsigned"===a?this.readInputValue=(e,t)=>_(e,t,n)-2**23:"signed"===a?this.readInputValue=(e,t)=>((e,t,r)=>_(e,t,r)<<8>>8)(e,t,n):t(!1);break;case 4:"unsigned"===a?this.readInputValue=(e,t)=>e.getUint32(t,n)-2**31:"signed"===a?this.readInputValue=(e,t)=>e.getInt32(t,n):"float"===a?this.readInputValue=(e,t)=>e.getFloat32(t,n):t(!1);break;case 8:"float"===a?this.readInputValue=(e,t)=>e.getFloat64(t,n):t(!1);break;default:C(s),t(!1)}switch(s){case 1:"ulaw"===a||"alaw"===a?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,r)=>e.setInt16(t,r,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,r)=>e.setUint8(t,r+128));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,r)=>e.setInt16(t,r,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,r)=>e.setInt32(t,r<<8,!0);break;case 4:this.outputSampleSize=4,"float"===a?(this.outputFormat="f32",this.writeOutputValue=(e,t,r)=>e.setFloat32(t,r,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,r)=>e.setInt32(t,r,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,r)=>e.setFloat32(t,r,!0);break;default:C(s),t(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=c(e.data),r=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,i=r*this.decoderConfig.numberOfChannels*this.outputSampleSize,a=new ArrayBuffer(i),s=new DataView(a);for(let c=0;c<r*this.decoderConfig.numberOfChannels;c++){const e=c*this.inputSampleSize,r=c*this.outputSampleSize,i=this.readInputValue(t,e);this.writeOutputValue(s,r,i)}const n=r/this.decoderConfig.sampleRate;(null===this.currentTimestamp||Math.abs(e.timestamp-this.currentTimestamp)>=n)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=n;const l=new ut({format:this.outputFormat,data:a,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:r,timestamp:o});this.onSample(l)}async flush(){}close(){}}class Ft extends It{constructor(e){if(!(e instanceof Mt))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}async _createDecoder(e,r){if(!(await this._track.canDecode()))throw new Error("This audio track cannot be decoded by this browser. Make sure to check decodability before using a track.");const i=this._track.codec,a=await this._track.getDecoderConfig();return t(i&&a),re.includes(a.codec)?new Et(e,r,a):new Bt(e,r,i,a)}_createPacketSink(){return new wt(this._track)}async getSample(e){Tt(e);for await(const t of this.mediaSamplesAtTimestamps([e]))return t;throw new Error("Internal error: Iterator returned nothing.")}samples(e=0,t=1/0){return this.mediaSamplesInRange(e,t)}samplesAtTimestamps(e){return this.mediaSamplesAtTimestamps(e)}}class Dt{constructor(e){if(!(e instanceof Mt))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new Ft(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}async getBuffer(e){Tt(e);const t=await this._audioSampleSink.getSample(e);return t&&this._audioSampleToWrappedArrayBuffer(t)}buffers(e=0,t=1/0){return E(this._audioSampleSink.samples(e,t),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e){return E(this._audioSampleSink.samplesAtTimestamps(e),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */class At{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof Rt}isAudioTrack(){return this instanceof Mt}get id(){return this._backing.getId()}get internalCodecId(){return this._backing.getInternalCodecId()}get languageCode(){return this._backing.getLanguageCode()}get name(){return this._backing.getName()}get timeResolution(){return this._backing.getTimeResolution()}get disposition(){return this._backing.getDisposition()}getFirstTimestamp(){return this._backing.getFirstTimestamp()}computeDuration(){return this._backing.computeDuration()}async computePacketStats(e=1/0){const t=new wt(this);let r=1/0,i=-1/0,a=0,s=0;for await(const n of t.packets(void 0,void 0,{metadataOnly:!0})){if(a>=e&&n.timestamp>=i)break;r=Math.min(r,n.timestamp),i=Math.max(i,n.timestamp+n.duration),a++,s+=n.byteLength}return{packetCount:a,averagePacketRate:a?Number((a/(i-r)).toPrecision(16)):0,averageBitrate:a?Number((8*s/(i-r)).toPrecision(16)):0}}}class Rt extends At{constructor(e,t){super(e,t),this._backing=t}get type(){return"video"}get codec(){return this._backing.getCodec()}get codedWidth(){return this._backing.getCodedWidth()}get codedHeight(){return this._backing.getCodedHeight()}get rotation(){return this._backing.getRotation()}get displayWidth(){return this._backing.getRotation()%180===0?this._backing.getCodedWidth():this._backing.getCodedHeight()}get displayHeight(){return this._backing.getRotation()%180===0?this._backing.getCodedHeight():this._backing.getCodedWidth()}getColorSpace(){return this._backing.getColorSpace()}async hasHighDynamicRange(){const e=await this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pg"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix}canBeTransparent(){return this._backing.canBeTransparent()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await this._backing.getDecoderConfig();return e?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const r=this._backing.getCodec();if(t(null!==r),$e.some(t=>t.supports(r,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(await VideoDecoder.isConfigSupported(e)).supported}catch(e){return console.error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Xe))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");if(null===this.codec)return null;const r=await this.getDecoderConfig();return t(r),qe(this.codec,r,e.data)}}class Mt extends At{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}get codec(){return this._backing.getCodec()}get numberOfChannels(){return this._backing.getNumberOfChannels()}get sampleRate(){return this._backing.getSampleRate()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await this._backing.getDecoderConfig();return e?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const r=this._backing.getCodec();if(t(null!==r),Qe.some(t=>t.supports(r,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof AudioDecoder)return!1;return!0===(await AudioDecoder.isConfigSupported(e)).supported}catch(e){return console.error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Xe))throw new TypeError("packet must be an EncodedPacket.");return null===this.codec?null:"key"}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */const Nt=e=>{let t=ua(e);const r=ya(e,4);let i=8;1===t&&(t=pa(e),i=16);const a=t-i;return a<0?null:{name:r,totalSize:t,headerSize:i,contentSize:a}},zt=e=>ma(e)/65536,Ot=e=>ma(e)/1073741824,Lt=e=>{let t=0;for(let r=0;r<4;r++){t<<=7;const r=sa(e);if(t|=127&r,0===(128&r))break}return t},Ut=e=>{let t=oa(e);return e.skip(2),t=Math.min(t,e.remainingLength),l.decode(aa(e,t))},Vt=e=>{const t=Nt(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const r=ua(e);e.skip(4);const i=aa(e,t.contentSize-8);switch(r){case 1:return l.decode(i);case 2:return new TextDecoder("utf-16be").decode(i);case 13:return new Z(i,"image/jpeg");case 14:return new Z(i,"image/png");case 27:return new Z(i,"image/bmp");default:return i}};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
class qt extends Ke{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.currentFragment=null,this.lastReadFragment=null,this.reader=e._reader}async computeDuration(){const e=await this.getTracks(),t=await Promise.all(e.map(e=>e.computeDuration()));return Math.max(0,...t)}async getTracks(){return await this.readMetadata(),this.tracks.map(e=>e.inputTrack)}async getMimeType(){await this.readMetadata();const e=await Promise.all(this.tracks.map(e=>e.inputTrack.getCodecParameterString()));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>"video"===e.info?.type),hasAudio:this.tracks.some(e=>"audio"===e.info?.type),codecStrings:e.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,8,16);if(t instanceof Promise&&(t=await t),!t)break;const r=e,i=Nt(t);if(!i)break;if("ftyp"===i.name){const e=ya(t,4);this.isQuickTime="qt  "===e}else if("moov"===i.name){let e=this.reader.requestSlice(t.filePos,i.contentSize);if(e instanceof Promise&&(e=await e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice),this.tracks.sort((e,t)=>Number(t.disposition.default)-Number(e.disposition.default));for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}break}e=r+i.totalSize}if(this.isFragmented&&null!==this.reader.fileSize){let e=this.reader.requestSlice(this.reader.fileSize-4,4);e instanceof Promise&&(e=await e),t(e);const r=ua(e),i=this.reader.fileSize-r;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(e instanceof Promise&&(e=await e),e){const t=Nt(e);if(t&&"mfra"===t.name){let r=this.reader.requestSlice(e.filePos,t.contentSize);r instanceof Promise&&(r=await r),r&&this.readContiguousBoxes(r)}}}}})())}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;const r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};e.sampleTable=r,t(this.moovSlice);const a=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(a),this.currentTrack=null;if("audio"===e.info?.type&&e.info.codec&&re.includes(e.info.codec)&&0===r.sampleCompositionTimeOffsets.length){t("audio"===e.info?.type);const a=me(e.info.codec),s=[],n=[];for(let t=0;t<r.sampleToChunk.length;t++){const o=r.sampleToChunk[t],c=r.sampleToChunk[t+1],l=(c?c.startChunkIndex:r.chunkOffsets.length)-o.startChunkIndex;for(let t=0;t<l;t++){const c=o.startSampleIndex+t*o.samplesPerChunk,l=c+o.samplesPerChunk,d=S(r.sampleTimingEntries,c,e=>e.startIndex),u=r.sampleTimingEntries[d],h=S(r.sampleTimingEntries,l,e=>e.startIndex),m=r.sampleTimingEntries[h],f=u.startDecodeTimestamp+(c-u.startIndex)*u.delta,p=m.startDecodeTimestamp+(l-m.startIndex)*m.delta-f,g=i(s);g&&g.delta===p?g.count++:s.push({startIndex:o.startChunkIndex+t,startDecodeTimestamp:f,count:1,delta:p});const k=o.samplesPerChunk*a.sampleSize*e.info.numberOfChannels;n.push(k)}o.startSampleIndex=o.startChunkIndex,o.samplesPerChunk=1}r.sampleTimingEntries=s,r.sampleSizes=n}if(r.sampleCompositionTimeOffsets.length>0){r.presentationTimestamps=[];for(const e of r.sampleTimingEntries)for(let t=0;t<e.count;t++)r.presentationTimestamps.push({presentationTimestamp:e.startDecodeTimestamp+t*e.delta,sampleIndex:e.startIndex+t});for(const e of r.sampleCompositionTimeOffsets)for(let t=0;t<e.count;t++){const i=e.startIndex+t,a=r.presentationTimestamps[i];a&&(a.presentationTimestamp+=e.offset)}r.presentationTimestamps.sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp),r.presentationTimestampIndexMap=Array(r.presentationTimestamps.length).fill(-1);for(let e=0;e<r.presentationTimestamps.length;e++)r.presentationTimestampIndexMap[r.presentationTimestamps[e].sampleIndex]=e}return r}async readFragment(e){if(this.lastReadFragment?.moofOffset===e)return this.lastReadFragment;let r=this.reader.requestSliceRange(e,8,16);r instanceof Promise&&(r=await r),t(r);const i=Nt(r);t("moof"===i?.name);let a=this.reader.requestSlice(e,i.totalSize);a instanceof Promise&&(a=await a),t(a),this.traverseBox(a);const s=this.lastReadFragment;t(s&&s.moofOffset===e);for(const[,t]of s.trackData){const e=t.track,{fragmentPositionCache:r}=e;if(!t.startTimestampIsFinal){const i=e.fragmentLookupTable.find(e=>e.moofOffset===s.moofOffset);if(i)Xt(t,i.timestamp);else{const e=S(r,s.moofOffset-1,e=>e.moofOffset);if(-1!==e){const i=r[e];Xt(t,i.endTimestamp)}}t.startTimestampIsFinal=!0}const i=S(r,t.startTimestamp,e=>e.startTimestamp);-1!==i&&r[i].moofOffset===s.moofOffset||r.splice(i+1,0,{moofOffset:s.moofOffset,startTimestamp:t.startTimestamp,endTimestamp:t.endTimestamp})}return s}readContiguousBoxes(e){const t=e.filePos;for(;e.filePos-t<=e.length-8;){if(!this.traverseBox(e))break}}*iterateContiguousBoxes(e){const t=e.filePos;for(;e.filePos-t<=e.length-8;){const t=e.filePos,r=Nt(e);if(!r)break;yield{boxInfo:r,slice:e},e.filePos=t+r.totalSize}}traverseBox(e){var s,n,o,d,u,m,p,k,b,T,y,w,S,I,v,P,x,C,_,B,E,F,A,R,N,z,O,L,U,V,q,H,W;const j=e.filePos,K=Nt(e);if(!K)return!1;const $=e.filePos,Q=j+K.totalSize;switch(K.name){case"mdia":case"minf":case"dinf":case"mfra":case"edts":case"wave":this.readContiguousBoxes(e.slice($,K.contentSize));break;case"mvhd":{const t=sa(e);e.skip(3),1===t?(e.skip(16),this.movieTimescale=ua(e),this.movieDurationInTimescale=pa(e)):(e.skip(8),this.movieTimescale=ua(e),this.movieDurationInTimescale=ua(e))}break;case"trak":{const t={id:-1,demuxer:this,inputTrack:null,disposition:{...te},info:null,timescale:-1,durationInMovieTimescale:-1,durationInMediaTimescale:-1,rotation:0,internalCodecId:null,name:null,languageCode:D,sampleTableByteOffset:-1,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:0,editListOffset:0};if(this.currentTrack=t,this.readContiguousBoxes(e.slice($,K.contentSize)),-1!==t.id&&-1!==t.timescale&&null!==t.info)if("video"===t.info.type&&-1!==t.info.width){const e=t;t.inputTrack=new Rt(this.input,new Wt(e)),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.inputTrack=new Mt(this.input,new jt(e)),this.tracks.push(t)}this.currentTrack=null}break;case"tkhd":{const i=this.currentTrack;if(!i)break;const a=sa(e),s=!!(1&ca(e));if(i.disposition.default=s,0===a)e.skip(8),i.id=ua(e),e.skip(4),i.durationInMovieTimescale=ua(e);else{if(1!==a)throw new Error(`Incorrect track header version ${a}.`);e.skip(16),i.id=ua(e),e.skip(4),i.durationInMovieTimescale=pa(e)}e.skip(16);const n=[zt(e),zt(e),Ot(e),zt(e),zt(e),Ot(e),zt(e),zt(e),Ot(e)],o=r((G=Yt(n),X=90,Math.round(G/X)*X));t(0===o||90===o||180===o||270===o),i.rotation=o}break;case"elst":{const t=this.currentTrack;if(!t)break;const r=sa(e);e.skip(3);let i=!1,a=0;const s=ua(e);for(let n=0;n<s;n++){const s=1===r?pa(e):ua(e),n=1===r?ga(e):ma(e),o=zt(e);if(0!==s){if(i){console.warn("Unsupported edit list: multiple edits are not currently supported. Only using first edit.");break}if(-1!==n){if(1!==o){console.warn("Unsupported edit list entry: media rate must be 1.");break}t.editListPreviousSegmentDurations=a,t.editListOffset=n,i=!0}else a+=s}}}break;case"mdhd":{const t=this.currentTrack;if(!t)break;const r=sa(e);e.skip(3),0===r?(e.skip(8),t.timescale=ua(e),t.durationInMediaTimescale=ua(e)):1===r&&(e.skip(16),t.timescale=ua(e),t.durationInMediaTimescale=pa(e));let i=oa(e);if(i>0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&i))+t.languageCode,i>>=5;M(t.languageCode)||(t.languageCode=D)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const r=ya(e,4);"vide"===r?t.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null,avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null}:"soun"===r&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=j,this.readContiguousBoxes(e.slice($,K.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const r=sa(e);e.skip(3);const i=ua(e);for(let a=0;a<i;a++){const i=e.filePos,a=Nt(e);if(!a)break;t.internalCodecId=a.name;const s=a.name.toLowerCase();if("video"===t.info.type)"avc1"===s||"avc3"===s?(t.info.codec="avc",t.info.avcType="avc1"===s?1:3):"hvc1"===s||"hev1"===s?t.info.codec="hevc":"vp08"===s?t.info.codec="vp8":"vp09"===s?t.info.codec="vp9":"av01"===s?t.info.codec="av1":console.warn(`Unsupported video codec (sample entry type '${a.name}').`),e.skip(24),t.info.width=oa(e),t.info.height=oa(e),e.skip(50),this.readContiguousBoxes(e.slice(e.filePos,i+a.totalSize-e.filePos));else{"mp4a"===s||("opus"===s?t.info.codec="opus":"flac"===s?t.info.codec="flac":"twos"===s||"sowt"===s||"raw "===s||"in24"===s||"in32"===s||"fl32"===s||"fl64"===s||"lpcm"===s||"ipcm"===s||"fpcm"===s||("ulaw"===s?t.info.codec="ulaw":"alaw"===s?t.info.codec="alaw":console.warn(`Unsupported audio codec (sample entry type '${a.name}').`))),e.skip(8);const n=oa(e);e.skip(6);let o=oa(e),c=oa(e);e.skip(4);let l=ua(e)/65536;if(0===r&&n>0)if(1===n)e.skip(4),c=8*ua(e),e.skip(8);else if(2===n){e.skip(4),l=Ta(e),o=ua(e),e.skip(4),c=ua(e);const r=ua(e);if(e.skip(8),"lpcm"===s){const e=c+7>>3,i=Boolean(1&r),a=Boolean(2&r),s=4&r?-1:0;c>0&&c<=64&&(i?32===c&&(t.info.codec=a?"pcm-f32be":"pcm-f32"):s&1<<e-1?1===e?t.info.codec="pcm-s8":2===e?t.info.codec=a?"pcm-s16be":"pcm-s16":3===e?t.info.codec=a?"pcm-s24be":"pcm-s24":4===e&&(t.info.codec=a?"pcm-s32be":"pcm-s32"):1===e&&(t.info.codec="pcm-u8")),null===t.info.codec&&console.warn("Unsupported PCM format.")}}"opus"===t.info.codec&&(l=ue),t.info.numberOfChannels=o,t.info.sampleRate=l,"twos"===s?8===c?t.info.codec="pcm-s8":16===c?t.info.codec="pcm-s16be":(console.warn(`Unsupported sample size ${c} for codec 'twos'.`),t.info.codec=null):"sowt"===s?8===c?t.info.codec="pcm-s8":16===c?t.info.codec="pcm-s16":(console.warn(`Unsupported sample size ${c} for codec 'sowt'.`),t.info.codec=null):"raw "===s?t.info.codec="pcm-u8":"in24"===s?t.info.codec="pcm-s24be":"in32"===s?t.info.codec="pcm-s32be":"fl32"===s?t.info.codec="pcm-f32be":"fl64"===s?t.info.codec="pcm-f64be":"ipcm"===s?t.info.codec="pcm-s16be":"fpcm"===s&&(t.info.codec="pcm-f32be"),this.readContiguousBoxes(e.slice(e.filePos,i+a.totalSize-e.filePos))}}}break;case"avcC":{const r=this.currentTrack;if(!r)break;t(r.info),r.info.codecDescription=aa(e,K.contentSize)}break;case"hvcC":{const r=this.currentTrack;if(!r)break;t(r.info),r.info.codecDescription=aa(e,K.contentSize)}break;case"vpcC":{const r=this.currentTrack;if(!r)break;t("video"===r.info?.type),e.skip(4);const i=sa(e),a=sa(e),s=sa(e),n=s>>4,o=s>>1&7,c=1&s,l=sa(e),d=sa(e),u=sa(e);r.info.vp9CodecInfo={profile:i,level:a,bitDepth:n,chromaSubsampling:o,videoFullRangeFlag:c,colourPrimaries:l,transferCharacteristics:d,matrixCoefficients:u}}break;case"av1C":{const r=this.currentTrack;if(!r)break;t("video"===r.info?.type),e.skip(1);const i=sa(e),a=i>>5,s=31&i,n=sa(e),o=n>>7,c=n>>6&1,l=n>>4&1,d=n>>3&1,u=n>>2&1,h=3&n,m=2===a&&c?n>>5&1?12:10:c?10:8;r.info.av1CodecInfo={profile:a,level:s,tier:o,bitDepth:m,monochrome:l,chromaSubsamplingX:d,chromaSubsamplingY:u,chromaSamplePosition:h}}break;case"colr":{const r=this.currentTrack;if(!r)break;t("video"===r.info?.type);if("nclx"!==ya(e,4))break;const i=oa(e),a=oa(e),s=oa(e),n=Boolean(128&sa(e));r.info.colorSpace={primaries:h[i],transfer:f[a],matrix:g[s],fullRange:n}}break;case"esds":{const r=this.currentTrack;if(!r)break;t("audio"===r.info?.type),e.skip(4);t(3===sa(e)),Lt(e),e.skip(2);const i=sa(e),a=0!==(64&i),s=0!==(32&i);if(0!==(128&i)&&e.skip(2),a){const t=sa(e);e.skip(t)}s&&e.skip(2);t(4===sa(e));const n=Lt(e),o=e.filePos,c=sa(e);if(64===c||103===c?(r.info.codec="aac",r.info.aacCodecInfo={isMpeg2:103===c}):105===c||107===c?r.info.codec="mp3":221===c?r.info.codec="vorbis":console.warn(`Unsupported audio codec (objectTypeIndication ${c}) - discarding track.`),e.skip(12),n>e.filePos-o){t(5===sa(e));const i=Lt(e);if(r.info.codecDescription=aa(e,i),"aac"===r.info.codec){const e=de(r.info.codecDescription);null!==e.numberOfChannels&&(r.info.numberOfChannels=e.numberOfChannels),null!==e.sampleRate&&(r.info.sampleRate=e.sampleRate)}}}break;case"enda":{const r=this.currentTrack;if(!r)break;t("audio"===r.info?.type);255&oa(e)&&("pcm-s16be"===r.info.codec?r.info.codec="pcm-s16":"pcm-s24be"===r.info.codec?r.info.codec="pcm-s24":"pcm-s32be"===r.info.codec?r.info.codec="pcm-s32":"pcm-f32be"===r.info.codec?r.info.codec="pcm-f32":"pcm-f64be"===r.info.codec&&(r.info.codec="pcm-f64"))}break;case"pcmC":{const r=this.currentTrack;if(!r)break;t("audio"===r.info?.type),e.skip(4);const i=sa(e),a=Boolean(1&i),s=sa(e);"pcm-s16be"===r.info.codec?a?16===s?r.info.codec="pcm-s16":24===s?r.info.codec="pcm-s24":32===s?r.info.codec="pcm-s32":(console.warn(`Invalid ipcm sample size ${s}.`),r.info.codec=null):16===s?r.info.codec="pcm-s16be":24===s?r.info.codec="pcm-s24be":32===s?r.info.codec="pcm-s32be":(console.warn(`Invalid ipcm sample size ${s}.`),r.info.codec=null):"pcm-f32be"===r.info.codec&&(a?32===s?r.info.codec="pcm-f32":64===s?r.info.codec="pcm-f64":(console.warn(`Invalid fpcm sample size ${s}.`),r.info.codec=null):32===s?r.info.codec="pcm-f32be":64===s?r.info.codec="pcm-f64be":(console.warn(`Invalid fpcm sample size ${s}.`),r.info.codec=null));break}case"dOps":{const r=this.currentTrack;if(!r)break;t("audio"===r.info?.type),e.skip(1);const i=sa(e),a=oa(e),s=ua(e),n=la(e),o=sa(e);let c;c=0!==o?aa(e,2+i):new Uint8Array(0);const l=new Uint8Array(19+c.byteLength),d=new DataView(l.buffer);d.setUint32(0,1332770163,!1),d.setUint32(4,1214603620,!1),d.setUint8(8,1),d.setUint8(9,i),d.setUint16(10,a,!0),d.setUint32(12,s,!0),d.setInt16(16,n,!0),d.setUint8(18,o),l.set(c,19),r.info.codecDescription=l,r.info.numberOfChannels=i}break;case"dfLa":{const r=this.currentTrack;if(!r)break;t("audio"===r.info?.type),e.skip(4);const i=127,a=128,s=e.filePos;for(;e.filePos<Q;){const t=sa(e),s=ca(e);if((t&i)===He.STREAMINFO){e.skip(10);const t=ua(e),i=t>>>12,a=1+(t>>9&7);r.info.sampleRate=i,r.info.numberOfChannels=a,e.skip(20)}else e.skip(s);if(t&a)break}const n=e.filePos;e.filePos=s;const o=aa(e,n-s),c=new Uint8Array(4+o.byteLength);new DataView(c.buffer).setUint32(0,1716281667,!1),c.set(o,4),r.info.codecDescription=c}break;case"stts":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=ua(e);let i=0,a=0;for(let s=0;s<r;s++){const r=ua(e),s=ua(e);t.sampleTable.sampleTimingEntries.push({startIndex:i,startDecodeTimestamp:a,count:r,delta:s}),i+=r,a+=r*s}}break;case"ctts":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=ua(e);let i=0;for(let a=0;a<r;a++){const r=ua(e),a=ma(e);t.sampleTable.sampleCompositionTimeOffsets.push({startIndex:i,count:r,offset:a}),i+=r}}break;case"stsz":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=ua(e),i=ua(e);if(0===r)for(let a=0;a<i;a++){const r=ua(e);t.sampleTable.sampleSizes.push(r)}else t.sampleTable.sampleSizes.push(r)}break;case"stz2":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4),e.skip(3);const r=sa(e),i=ua(e),s=aa(e,Math.ceil(i*r/8)),n=new a(s);for(let e=0;e<i;e++){const e=n.readBits(r);t.sampleTable.sampleSizes.push(e)}}break;case"stss":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4),t.sampleTable.keySampleIndices=[];const r=ua(e);for(let i=0;i<r;i++){const r=ua(e)-1;t.sampleTable.keySampleIndices.push(r)}0!==t.sampleTable.keySampleIndices[0]&&t.sampleTable.keySampleIndices.unshift(0)}break;case"stsc":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=ua(e);for(let a=0;a<r;a++){const r=ua(e)-1,i=ua(e),a=ua(e);t.sampleTable.sampleToChunk.push({startSampleIndex:-1,startChunkIndex:r,samplesPerChunk:i,sampleDescriptionIndex:a})}let i=0;for(let e=0;e<t.sampleTable.sampleToChunk.length;e++)if(t.sampleTable.sampleToChunk[e].startSampleIndex=i,e<t.sampleTable.sampleToChunk.length-1){i+=(t.sampleTable.sampleToChunk[e+1].startChunkIndex-t.sampleTable.sampleToChunk[e].startChunkIndex)*t.sampleTable.sampleToChunk[e].samplesPerChunk}}break;case"stco":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=ua(e);for(let i=0;i<r;i++){const r=ua(e);t.sampleTable.chunkOffsets.push(r)}}break;case"co64":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=ua(e);for(let i=0;i<r;i++){const r=pa(e);t.sampleTable.chunkOffsets.push(r)}}break;case"mvex":this.isFragmented=!0,this.readContiguousBoxes(e.slice($,K.contentSize));break;case"mehd":{const t=sa(e);e.skip(3);const r=1===t?pa(e):ua(e);this.movieDurationInTimescale=r}break;case"trex":{e.skip(4);const t=ua(e),r=ua(e),i=ua(e),a=ua(e),s=ua(e);this.fragmentTrackDefaults.push({trackId:t,defaultSampleDescriptionIndex:r,defaultSampleDuration:i,defaultSampleSize:a,defaultSampleFlags:s})}break;case"tfra":{const t=sa(e);e.skip(3);const r=ua(e),i=this.tracks.find(e=>e.id===r);if(!i)break;const a=ua(e),s=(12&a)>>2,n=3&a,o=[sa,oa,ca,ua],c=o[(48&a)>>4],l=o[s],d=o[n],u=ua(e);for(let h=0;h<u;h++){const r=1===t?pa(e):ua(e),a=1===t?pa(e):ua(e);c(e),l(e),d(e),i.fragmentLookupTable.push({timestamp:r,moofOffset:a})}i.fragmentLookupTable.sort((e,t)=>e.timestamp-t.timestamp);for(let e=0;e<i.fragmentLookupTable.length-1;e++){const t=i.fragmentLookupTable[e],r=i.fragmentLookupTable[e+1];t.timestamp===r.timestamp&&(i.fragmentLookupTable.splice(e+1,1),e--)}}break;case"moof":this.currentFragment={moofOffset:j,moofSize:K.totalSize,implicitBaseDataOffset:j,trackData:new Map},this.readContiguousBoxes(e.slice($,K.contentSize)),this.lastReadFragment=this.currentFragment,this.currentFragment=null;break;case"traf":if(t(this.currentFragment),this.readContiguousBoxes(e.slice($,K.contentSize)),this.currentTrack){const e=this.currentFragment.trackData.get(this.currentTrack.id);if(e){const{currentFragmentState:r}=this.currentTrack;t(r),null!==r.startTimestamp&&(Xt(e,r.startTimestamp),e.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{t(this.currentFragment),e.skip(1);const r=ca(e),i=Boolean(1&r),a=Boolean(2&r),s=Boolean(8&r),n=Boolean(16&r),o=Boolean(32&r),c=Boolean(65536&r),l=Boolean(131072&r),d=ua(e),u=this.tracks.find(e=>e.id===d);if(!u)break;const h=this.fragmentTrackDefaults.find(e=>e.trackId===d);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:h?.defaultSampleDescriptionIndex??null,defaultSampleDuration:h?.defaultSampleDuration??null,defaultSampleSize:h?.defaultSampleSize??null,defaultSampleFlags:h?.defaultSampleFlags??null,startTimestamp:null},i?u.currentFragmentState.baseDataOffset=pa(e):l&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),a&&(u.currentFragmentState.sampleDescriptionIndex=ua(e)),s&&(u.currentFragmentState.defaultSampleDuration=ua(e)),n&&(u.currentFragmentState.defaultSampleSize=ua(e)),o&&(u.currentFragmentState.defaultSampleFlags=ua(e)),c&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const r=this.currentTrack;if(!r)break;t(r.currentFragmentState);const i=sa(e);e.skip(3);const a=0===i?ua(e):pa(e);r.currentFragmentState.startTimestamp=a}break;case"trun":{const r=this.currentTrack;if(!r)break;if(t(this.currentFragment),t(r.currentFragmentState),this.currentFragment.trackData.has(r.id)){console.warn("Can't have two trun boxes for the same track in one fragment. Ignoring...");break}const a=sa(e),s=ca(e),n=Boolean(1&s),o=Boolean(4&s),c=Boolean(256&s),l=Boolean(512&s),d=Boolean(1024&s),u=Boolean(2048&s),h=ua(e);let m=r.currentFragmentState.baseDataOffset;n&&(m+=ma(e));let f=null;o&&(f=ua(e));let p=m;if(0===h){this.currentFragment.implicitBaseDataOffset=p;break}let g=0;const k={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(r.id,k);for(let i=0;i<h;i++){let s,n,o;c?s=ua(e):(t(null!==r.currentFragmentState.defaultSampleDuration),s=r.currentFragmentState.defaultSampleDuration),l?n=ua(e):(t(null!==r.currentFragmentState.defaultSampleSize),n=r.currentFragmentState.defaultSampleSize),d?o=ua(e):(t(null!==r.currentFragmentState.defaultSampleFlags),o=r.currentFragmentState.defaultSampleFlags),0===i&&null!==f&&(o=f);let h=0;u&&(h=0===a?ua(e):ma(e));const m=!(65536&o);k.samples.push({presentationTimestamp:g+h,duration:s,byteOffset:p,byteSize:n,isKeyFrame:m}),p+=n,g+=s}k.presentationTimestamps=k.samples.map((e,t)=>({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let e=0;e<k.presentationTimestamps.length;e++){const t=k.presentationTimestamps[e],r=k.samples[t.sampleIndex];if(null===k.firstKeyFrameTimestamp&&r.isKeyFrame&&(k.firstKeyFrameTimestamp=r.presentationTimestamp),e<k.presentationTimestamps.length-1){const i=k.presentationTimestamps[e+1];r.duration=i.presentationTimestamp-t.presentationTimestamp}}const b=k.samples[k.presentationTimestamps[0].sampleIndex],T=k.samples[i(k.presentationTimestamps).sampleIndex];k.startTimestamp=b.presentationTimestamp,k.endTimestamp=T.presentationTimestamp+T.duration,this.currentFragment.implicitBaseDataOffset=p}break;case"udta":{const t=this.iterateContiguousBoxes(e.slice($,K.contentSize));for(const{boxInfo:e,slice:r}of t){if("meta"!==e.name&&!this.currentTrack){const t=r.filePos;(s=this.metadataTags).raw??(s.raw={}),"\xa9"===e.name[0]?(n=this.metadataTags.raw)[o=e.name]??(n[o]=Ut(r)):(d=this.metadataTags.raw)[u=e.name]??(d[u]=aa(r,e.contentSize)),r.filePos=t}switch(e.name){case"meta":r.skip(-e.headerSize),this.traverseBox(r);break;case"\xa9nam":case"name":this.currentTrack?this.currentTrack.name=l.decode(aa(r,e.contentSize)):(m=this.metadataTags).title??(m.title=Ut(r));break;case"\xa9des":this.currentTrack||((p=this.metadataTags).description??(p.description=Ut(r)));break;case"\xa9ART":this.currentTrack||((k=this.metadataTags).artist??(k.artist=Ut(r)));break;case"\xa9alb":this.currentTrack||((b=this.metadataTags).album??(b.album=Ut(r)));break;case"albr":this.currentTrack||((T=this.metadataTags).albumArtist??(T.albumArtist=Ut(r)));break;case"\xa9gen":this.currentTrack||((y=this.metadataTags).genre??(y.genre=Ut(r)));break;case"\xa9day":if(!this.currentTrack){const e=new Date(Ut(r));Number.isNaN(e.getTime())||((w=this.metadataTags).date??(w.date=e))}break;case"\xa9cmt":this.currentTrack||((S=this.metadataTags).comment??(S.comment=Ut(r)));break;case"\xa9lyr":this.currentTrack||((I=this.metadataTags).lyrics??(I.lyrics=Ut(r)))}}}break;case"meta":{if(this.currentTrack)break;const t=0!==ua(e);this.currentMetadataKeys=new Map,t?this.readContiguousBoxes(e.slice($,K.contentSize)):this.readContiguousBoxes(e.slice($+4,K.contentSize-4)),this.currentMetadataKeys=null}break;case"keys":{if(!this.currentMetadataKeys)break;e.skip(4);const t=ua(e);for(let r=0;r<t;r++){const t=ua(e);e.skip(4);const i=l.decode(aa(e,t-8));this.currentMetadataKeys.set(r+1,i)}}break;case"ilst":{if(!this.currentMetadataKeys)break;const t=this.iterateContiguousBoxes(e.slice($,K.contentSize));for(const{boxInfo:e,slice:r}of t){let t=e.name;const i=(t.charCodeAt(0)<<24)+(t.charCodeAt(1)<<16)+(t.charCodeAt(2)<<8)+t.charCodeAt(3);this.currentMetadataKeys.has(i)&&(t=this.currentMetadataKeys.get(i));const a=Vt(r);switch((v=this.metadataTags).raw??(v.raw={}),(P=this.metadataTags.raw)[t]??(P[t]=a),t){case"\xa9nam":case"titl":case"com.apple.quicktime.title":case"title":"string"===typeof a&&((x=this.metadataTags).title??(x.title=a));break;case"\xa9des":case"desc":case"dscp":case"com.apple.quicktime.description":case"description":"string"===typeof a&&((C=this.metadataTags).description??(C.description=a));break;case"\xa9ART":case"com.apple.quicktime.artist":case"artist":"string"===typeof a&&((_=this.metadataTags).artist??(_.artist=a));break;case"\xa9alb":case"albm":case"com.apple.quicktime.album":case"album":"string"===typeof a&&((B=this.metadataTags).album??(B.album=a));break;case"aART":case"album_artist":"string"===typeof a&&((E=this.metadataTags).albumArtist??(E.albumArtist=a));break;case"\xa9cmt":case"com.apple.quicktime.comment":case"comment":"string"===typeof a&&((F=this.metadataTags).comment??(F.comment=a));break;case"\xa9gen":case"gnre":case"com.apple.quicktime.genre":case"genre":"string"===typeof a&&((A=this.metadataTags).genre??(A.genre=a));break;case"\xa9lyr":case"lyrics":"string"===typeof a&&((R=this.metadataTags).lyrics??(R.lyrics=a));break;case"\xa9day":case"rldt":case"com.apple.quicktime.creationdate":case"date":if("string"===typeof a){const e=new Date(a);Number.isNaN(e.getTime())||((N=this.metadataTags).date??(N.date=e))}break;case"covr":case"com.apple.quicktime.artwork":a instanceof Z?((z=this.metadataTags).images??(z.images=[]),this.metadataTags.images.push({data:a.data,kind:"coverFront",mimeType:a.mimeType})):a instanceof Uint8Array&&((O=this.metadataTags).images??(O.images=[]),this.metadataTags.images.push({data:a,kind:"coverFront",mimeType:"image/*"}));break;case"track":if("string"===typeof a){const e=a.split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&((L=this.metadataTags).trackNumber??(L.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&((U=this.metadataTags).tracksTotal??(U.tracksTotal=r))}break;case"trkn":if(a instanceof Uint8Array&&a.length>=6){const e=c(a),t=e.getUint16(2,!1),r=e.getUint16(4,!1);t>0&&((V=this.metadataTags).trackNumber??(V.trackNumber=t)),r>0&&((q=this.metadataTags).tracksTotal??(q.tracksTotal=r))}break;case"disc":case"disk":if(a instanceof Uint8Array&&a.length>=6){const e=c(a),t=e.getUint16(2,!1),r=e.getUint16(4,!1);t>0&&((H=this.metadataTags).discNumber??(H.discNumber=t)),r>0&&((W=this.metadataTags).discsTotal??(W.discsTotal=r))}}}}}var G,X;return e.filePos=Q,!0}}class Ht{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}getDisposition(){return this.internalTrack.disposition}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}async getFirstTimestamp(){const e=await this.getFirstPacket({metadataOnly:!0});return e?.timestamp??0}async getFirstPacket(e){const t=await this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)}mapTimestampIntoTimescale(e){return A(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(e,t){const r=this.mapTimestampIntoTimescale(e),i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=Kt(i,r),s=await this.fetchPacketForSampleIndex(a,t);return Jt(i)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const i=S(t.presentationTimestamps,r,e=>e.presentationTimestamp);return{sampleIndex:-1!==i?t.presentationTimestamps[i].sampleIndex:-1,correctSampleFound:-1!==i&&r<t.endTimestamp}},r,r,t):s}async getNextPacket(e,t){const r=this.packetToSampleIndex.get(e);if(void 0!==r)return this.fetchPacketForSampleIndex(r+1,t);const i=this.packetToFragmentLocation.get(e);if(void 0===i)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(i.fragment,e=>{if(e===i.fragment){const t=e.trackData.get(this.internalTrack.id);if(i.sampleIndex+1<t.samples.length)return{sampleIndex:i.sampleIndex+1,correctSampleFound:!0}}else{if(e.trackData.get(this.internalTrack.id))return{sampleIndex:0,correctSampleFound:!0}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)}async getKeyPacket(e,t){const r=this.mapTimestampIntoTimescale(e),i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=$t(i,r),s=await this.fetchPacketForSampleIndex(a,t);return Jt(i)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const i=x(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=r);return{sampleIndex:-1!==i?t.presentationTimestamps[i].sampleIndex:-1,correctSampleFound:-1!==i&&r<t.endTimestamp}},r,r,t):s}async getNextKeyPacket(e,r){const i=this.packetToSampleIndex.get(e);if(void 0!==i){const e=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),t=Gt(e,i);return this.fetchPacketForSampleIndex(t,r)}const a=this.packetToFragmentLocation.get(e);if(void 0===a)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(a.fragment,e=>{if(e===a.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>a.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const r=e.trackData.get(this.internalTrack.id);if(r&&null!==r.firstKeyFrameTimestamp){const e=r.samples.findIndex(e=>e.isKeyFrame);return t(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,r)}async fetchPacketForSampleIndex(e,r){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=Qt(i,e);if(!a)return null;let s;if(r.metadataOnly)s=Ge;else{let e=this.internalTrack.demuxer.reader.requestSlice(a.sampleOffset,a.sampleSize);e instanceof Promise&&(e=await e),t(e),s=aa(e,a.sampleSize)}const n=(a.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,o=a.duration/this.internalTrack.timescale,c=new Xe(s,a.isKeyFrame?"key":"delta",n,o,e,a.sampleSize);return this.packetToSampleIndex.set(c,e),c}async fetchPacketInFragment(e,r,i){if(-1===r)return null;const a=e.trackData.get(this.internalTrack.id).samples[r];let s;if(t(a),i.metadataOnly)s=Ge;else{let e=this.internalTrack.demuxer.reader.requestSlice(a.byteOffset,a.byteSize);e instanceof Promise&&(e=await e),t(e),s=aa(e,a.byteSize)}const n=(a.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,o=a.duration/this.internalTrack.timescale,c=new Xe(s,a.isKeyFrame?"key":"delta",n,o,e.moofOffset+r,a.byteSize);return this.packetToFragmentLocation.set(c,{fragment:e,sampleIndex:r}),c}async performFragmentedLookup(e,r,i,a,s){const n=this.internalTrack.demuxer;let o=null,c=null,l=-1;if(e){const{sampleIndex:t,correctSampleFound:i}=r(e);if(i)return this.fetchPacketInFragment(e,t,s);-1!==t&&(c=e,l=t)}const d=S(this.internalTrack.fragmentLookupTable,i,e=>e.timestamp),u=-1!==d?this.internalTrack.fragmentLookupTable[d]:null,h=S(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),m=-1!==h?this.internalTrack.fragmentPositionCache[h]:null,f=Math.max(u?.moofOffset??0,m?.moofOffset??0)||null;let p;for(e?null===f||e.moofOffset>=f?(p=e.moofOffset+e.moofSize,o=e):p=f:p=f??0;;){if(o){const e=o.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>a)break}let e=n.reader.requestSliceRange(p,8,16);if(e instanceof Promise&&(e=await e),!e)break;const t=p,i=Nt(e);if(!i)break;if("moof"===i.name){o=await n.readFragment(t);const{sampleIndex:e,correctSampleFound:i}=r(o);if(i)return this.fetchPacketInFragment(o,e,s);-1!==e&&(c=o,l=e)}p=t+i.totalSize}if(u&&(!c||c.moofOffset<u.moofOffset)){const e=this.internalTrack.fragmentLookupTable[d-1];t(!e||e.timestamp<u.timestamp);const i=e?.timestamp??-1/0;return this.performFragmentedLookup(null,r,i,a,s)}return c?this.fetchPacketInFragment(c,l,s):null}}class Wt extends Ht{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getRotation(){return this.internalTrack.rotation}async getColorSpace(){return{primaries:this.internalTrack.info.colorSpace?.primaries,transfer:this.internalTrack.info.colorSpace?.transfer,matrix:this.internalTrack.info.colorSpace?.matrix,fullRange:this.internalTrack.info.colorSpace?.fullRange}}async canBeTransparent(){return!1}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo){if("av1"===this.internalTrack.info.codec&&!this.internalTrack.info.av1CodecInfo){const e=await this.getFirstPacket({});this.internalTrack.info.av1CodecInfo=e&&Le(e.data)}}else{const e=await this.getFirstPacket({});this.internalTrack.info.vp9CodecInfo=e&&ze(e.data)}return{codec:ne(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}})()):null}}class jt extends Ht{constructor(e){super(e),this.decoderConfig=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfig??(this.decoderConfig={codec:oe(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}):null}}const Kt=(e,t)=>{if(e.presentationTimestamps){const r=S(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===r?-1:e.presentationTimestamps[r].sampleIndex}{const r=S(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===r)return-1;const i=e.sampleTimingEntries[r];return i.startIndex+Math.min(Math.floor((t-i.startDecodeTimestamp)/i.delta),i.count-1)}},$t=(e,t)=>{if(!e.keySampleIndices)return Kt(e,t);if(e.presentationTimestamps){const r=S(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===r)return-1;for(let t=r;t>=0;t--){const r=e.presentationTimestamps[t].sampleIndex;if(-1!==w(e.keySampleIndices,r,e=>e))return r}return-1}{const r=Kt(e,t),i=S(e.keySampleIndices,r,e=>e);return e.keySampleIndices[i]??-1}},Qt=(e,r)=>{const i=S(e.sampleTimingEntries,r,e=>e.startIndex),a=e.sampleTimingEntries[i];if(!a||a.startIndex+a.count<=r)return null;let s=a.startDecodeTimestamp+(r-a.startIndex)*a.delta;const n=S(e.sampleCompositionTimeOffsets,r,e=>e.startIndex),o=e.sampleCompositionTimeOffsets[n];o&&r-o.startIndex<o.count&&(s+=o.offset);const c=e.sampleSizes[Math.min(r,e.sampleSizes.length-1)],l=S(e.sampleToChunk,r,e=>e.startSampleIndex),d=e.sampleToChunk[l];t(d);const u=d.startChunkIndex+Math.floor((r-d.startSampleIndex)/d.samplesPerChunk),h=e.chunkOffsets[u],m=d.startSampleIndex+(u-d.startChunkIndex)*d.samplesPerChunk;let f=0,p=h;if(1===e.sampleSizes.length)p+=c*(r-m),f+=c*d.samplesPerChunk;else for(let t=m;t<m+d.samplesPerChunk;t++){const i=e.sampleSizes[t];t<r&&(p+=i),f+=i}let g=a.delta;if(e.presentationTimestamps){const i=e.presentationTimestampIndexMap[r];if(t(void 0!==i),i<e.presentationTimestamps.length-1){g=e.presentationTimestamps[i+1].presentationTimestamp-s}}return{presentationTimestamp:s,duration:g,sampleOffset:p,sampleSize:c,chunkOffset:h,chunkSize:f,isKeyFrame:!e.keySampleIndices||-1!==w(e.keySampleIndices,r,e=>e)}},Gt=(e,t)=>{if(!e.keySampleIndices)return t+1;const r=S(e.keySampleIndices,t,e=>e);return e.keySampleIndices[r+1]??-1},Xt=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const r of e.samples)r.presentationTimestamp+=t;for(const r of e.presentationTimestamps)r.presentationTimestamp+=t},Yt=e=>{const[t,,,r]=e,i=Math.hypot(t,r),a=t/i,s=r/i,n=-Math.atan2(s,a)*(180/Math.PI);return Number.isFinite(n)?n:0},Jt=e=>0===e.sampleSizes.length;
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
var Zt,er;(er=Zt||(Zt={}))[er.EBML=440786851]="EBML",er[er.EBMLVersion=17030]="EBMLVersion",er[er.EBMLReadVersion=17143]="EBMLReadVersion",er[er.EBMLMaxIDLength=17138]="EBMLMaxIDLength",er[er.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",er[er.DocType=17026]="DocType",er[er.DocTypeVersion=17031]="DocTypeVersion",er[er.DocTypeReadVersion=17029]="DocTypeReadVersion",er[er.Void=236]="Void",er[er.Segment=408125543]="Segment",er[er.SeekHead=290298740]="SeekHead",er[er.Seek=19899]="Seek",er[er.SeekID=21419]="SeekID",er[er.SeekPosition=21420]="SeekPosition",er[er.Duration=17545]="Duration",er[er.Info=357149030]="Info",er[er.TimestampScale=2807729]="TimestampScale",er[er.MuxingApp=19840]="MuxingApp",er[er.WritingApp=22337]="WritingApp",er[er.Tracks=374648427]="Tracks",er[er.TrackEntry=174]="TrackEntry",er[er.TrackNumber=215]="TrackNumber",er[er.TrackUID=29637]="TrackUID",er[er.TrackType=131]="TrackType",er[er.FlagEnabled=185]="FlagEnabled",er[er.FlagDefault=136]="FlagDefault",er[er.FlagForced=21930]="FlagForced",er[er.FlagOriginal=21934]="FlagOriginal",er[er.FlagHearingImpaired=21931]="FlagHearingImpaired",er[er.FlagVisualImpaired=21932]="FlagVisualImpaired",er[er.FlagCommentary=21935]="FlagCommentary",er[er.FlagLacing=156]="FlagLacing",er[er.Name=21358]="Name",er[er.Language=2274716]="Language",er[er.LanguageBCP47=2274717]="LanguageBCP47",er[er.CodecID=134]="CodecID",er[er.CodecPrivate=25506]="CodecPrivate",er[er.CodecDelay=22186]="CodecDelay",er[er.SeekPreRoll=22203]="SeekPreRoll",er[er.DefaultDuration=2352003]="DefaultDuration",er[er.Video=224]="Video",er[er.PixelWidth=176]="PixelWidth",er[er.PixelHeight=186]="PixelHeight",er[er.AlphaMode=21440]="AlphaMode",er[er.Audio=225]="Audio",er[er.SamplingFrequency=181]="SamplingFrequency",er[er.Channels=159]="Channels",er[er.BitDepth=25188]="BitDepth",er[er.SimpleBlock=163]="SimpleBlock",er[er.BlockGroup=160]="BlockGroup",er[er.Block=161]="Block",er[er.BlockAdditions=30113]="BlockAdditions",er[er.BlockMore=166]="BlockMore",er[er.BlockAdditional=165]="BlockAdditional",er[er.BlockAddID=238]="BlockAddID",er[er.BlockDuration=155]="BlockDuration",er[er.ReferenceBlock=251]="ReferenceBlock",er[er.Cluster=524531317]="Cluster",er[er.Timestamp=231]="Timestamp",er[er.Cues=475249515]="Cues",er[er.CuePoint=187]="CuePoint",er[er.CueTime=179]="CueTime",er[er.CueTrackPositions=183]="CueTrackPositions",er[er.CueTrack=247]="CueTrack",er[er.CueClusterPosition=241]="CueClusterPosition",er[er.Colour=21936]="Colour",er[er.MatrixCoefficients=21937]="MatrixCoefficients",er[er.TransferCharacteristics=21946]="TransferCharacteristics",er[er.Primaries=21947]="Primaries",er[er.Range=21945]="Range",er[er.Projection=30320]="Projection",er[er.ProjectionType=30321]="ProjectionType",er[er.ProjectionPoseRoll=30325]="ProjectionPoseRoll",er[er.Attachments=423732329]="Attachments",er[er.AttachedFile=24999]="AttachedFile",er[er.FileDescription=18046]="FileDescription",er[er.FileName=18030]="FileName",er[er.FileMediaType=18016]="FileMediaType",er[er.FileData=18012]="FileData",er[er.FileUID=18094]="FileUID",er[er.Chapters=272869232]="Chapters",er[er.Tags=307544935]="Tags",er[er.Tag=29555]="Tag",er[er.Targets=25536]="Targets",er[er.TargetTypeValue=26826]="TargetTypeValue",er[er.TargetType=25546]="TargetType",er[er.TagTrackUID=25541]="TagTrackUID",er[er.TagEditionUID=25545]="TagEditionUID",er[er.TagChapterUID=25540]="TagChapterUID",er[er.TagAttachmentUID=25542]="TagAttachmentUID",er[er.SimpleTag=26568]="SimpleTag",er[er.TagName=17827]="TagName",er[er.TagLanguage=17530]="TagLanguage",er[er.TagString=17543]="TagString",er[er.TagBinary=17541]="TagBinary",er[er.ContentEncodings=28032]="ContentEncodings",er[er.ContentEncoding=25152]="ContentEncoding",er[er.ContentEncodingOrder=20529]="ContentEncodingOrder",er[er.ContentEncodingScope=20530]="ContentEncodingScope",er[er.ContentCompression=20532]="ContentCompression",er[er.ContentCompAlgo=16980]="ContentCompAlgo",er[er.ContentCompSettings=16981]="ContentCompSettings",er[er.ContentEncryption=20533]="ContentEncryption";const tr=[Zt.EBML,Zt.Segment],rr=[Zt.SeekHead,Zt.Info,Zt.Cluster,Zt.Tracks,Zt.Cues,Zt.Attachments,Zt.Chapters,Zt.Tags],ir=[...tr,...rr],ar=16,sr=e=>{if(e.remainingLength<1)return null;const t=sa(e);if(e.skip(-1),0===t)return null;let r=1,i=128;for(;0===(t&i);)r++,i>>=1;return e.remainingLength<r?null:r},nr=e=>{if(e.remainingLength<1)return null;const t=sa(e);if(0===t)return null;let r=1,i=128;for(;0===(t&i);)r++,i>>=1;if(e.remainingLength<r-1)return null;let a=t&i-1;for(let s=1;s<r;s++)a*=256,a+=sa(e);return a},or=(e,t)=>{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let r=0;for(let i=0;i<t;i++)r*=256,r+=sa(e);return r},cr=e=>{const t=sr(e);if(null===t)return null;if(e.remainingLength<t)return null;return or(e,t)},lr=e=>{if(e.remainingLength<1)return null;if(255===sa(e))return;e.skip(-1);const t=nr(e);return null===t?null:72057594037927940!==t?t:void 0},dr=e=>{t(e.remainingLength>=2);const r=cr(e);if(null===r)return null;const i=lr(e);return null===i?null:{id:r,size:i}},ur=(e,t)=>{const r=aa(e,t);let i=0;for(;i<t&&0!==r[i];)i+=1;return String.fromCharCode(...r.subarray(0,i))},hr=(e,t)=>{const r=aa(e,t);let i=0;for(;i<t&&0!==r[i];)i+=1;return l.decode(r.subarray(0,i))},mr=(e,t)=>{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?ba(e):Ta(e)},fr=async(e,t,r,i)=>{const a=new Set(r);let s=t;for(;null===i||s<i;){let t=e.requestSliceRange(s,2,ar);if(t instanceof Promise&&(t=await t),!t)break;const r=dr(t);if(!r)break;if(a.has(r.id))return{pos:s,found:!0};xr(r.size),s=t.filePos+r.size}return{pos:null!==i&&i>s?i:s,found:!1}},pr=async(e,t,r,i)=>{const a=new Set(r);let s=t;for(;s<i;){let t=e.requestSliceRange(s,0,Math.min(65536,i-s));if(t instanceof Promise&&(t=await t),!t)break;if(t.length<8)break;for(let e=0;e<t.length-8;e++){t.filePos=s;const e=cr(t);if(null!==e&&a.has(e))return s;s++}}return null},gr="V_MPEG4/ISO/AVC",kr="V_MPEGH/ISO/HEVC",br="V_VP8",Tr="V_VP9",yr="V_AV1",wr="A_AAC",Sr="A_MPEG/L3",Ir="A_OPUS",vr="A_VORBIS",Pr="A_FLAC";function xr(e){if(void 0===e)throw new Error("Undefined element size is used in a place where it is not supported.")}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
var Cr,_r,Br,Er,Fr,Dr;(_r=Cr||(Cr={}))[_r.None=0]="None",_r[_r.Xiph=1]="Xiph",_r[_r.FixedSize=2]="FixedSize",_r[_r.Ebml=3]="Ebml",(Er=Br||(Br={}))[Er.Block=1]="Block",Er[Er.Private=2]="Private",Er[Er.Next=4]="Next",(Dr=Fr||(Fr={}))[Dr.Zlib=0]="Zlib",Dr[Dr.Bzlib=1]="Bzlib",Dr[Dr.lzo1x=2]="lzo1x",Dr[Dr.HeaderStripping=3]="HeaderStripping";const Ar=[{id:Zt.SeekHead,flag:"seekHeadSeen"},{id:Zt.Info,flag:"infoSeen"},{id:Zt.Tracks,flag:"tracksSeen"},{id:Zt.Cues,flag:"cuesSeen"}],Rr=10485760;class Mr extends Ke{constructor(e){super(e),this.readMetadataPromise=null,this.segments=[],this.currentSegment=null,this.currentTrack=null,this.currentCluster=null,this.currentBlock=null,this.currentBlockAdditional=null,this.currentCueTime=null,this.currentDecodingInstruction=null,this.currentTagTargetIsMovie=!0,this.currentSimpleTagName=null,this.currentAttachedFile=null,this.isWebM=!1,this.reader=e._reader}async computeDuration(){const e=await this.getTracks(),t=await Promise.all(e.map(e=>e.computeDuration()));return Math.max(0,...t)}async getTracks(){return await this.readMetadata(),this.segments.flatMap(e=>e.tracks.map(e=>e.inputTrack))}async getMimeType(){await this.readMetadata();const e=await this.getTracks(),t=await Promise.all(e.map(e=>e.getCodecParameterString()));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>"video"===e.info?.type)),hasAudio:this.segments.some(e=>e.tracks.some(e=>"audio"===e.info?.type)),codecStrings:t.filter(Boolean)})}async getMetadataTags(){await this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&await this.loadSegmentMetadata(t),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e={...e,...t.metadataTags};return e}readMetadata(){return this.readMetadataPromise??(this.readMetadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,ar);if(t instanceof Promise&&(t=await t),!t)break;const r=dr(t);if(!r)break;const a=r.id;let s=r.size;const n=t.filePos;if(a===Zt.EBML){xr(s);let e=this.reader.requestSlice(n,s);if(e instanceof Promise&&(e=await e),!e)break;this.readContiguousElements(e)}else if(a===Zt.Segment){if(await this.readSegment(n,s),void 0===s)break;if(null===this.reader.fileSize)break}else if(a===Zt.Cluster){if(null===this.reader.fileSize)break;if(void 0===s){s=(await fr(this.reader,n,ir,this.reader.fileSize)).pos-n}const e=i(this.segments);e&&(e.elementEndPos=n+s)}xr(s),e=n+s}})())}async readSegment(e,t){this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let r=e;for(;null===this.currentSegment.elementEndPos||r<this.currentSegment.elementEndPos;){let e=this.reader.requestSliceRange(r,2,ar);if(e instanceof Promise&&(e=await e),!e)break;const t=r,i=dr(e);if(!i||!rr.includes(i.id)&&i.id!==Zt.Void){const e=await pr(this.reader,t,rr,Math.min(this.currentSegment.elementEndPos??1/0,t+Rr));if(e){r=e;continue}break}const{id:a,size:s}=i,n=e.filePos,o=Ar.findIndex(e=>e.id===a);if(-1!==o){const e=Ar[o].flag;this.currentSegment[e]=!0,xr(s);let t=this.reader.requestSlice(n,s);t instanceof Promise&&(t=await t),t&&this.readContiguousElements(t)}else if(a===Zt.Tags||a===Zt.Attachments){a===Zt.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,xr(s);let e=this.reader.requestSlice(n,s);e instanceof Promise&&(e=await e),e&&this.readContiguousElements(e)}else if(a===Zt.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===s)break;r=n+s}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const n of this.currentSegment.seekEntries){const t=Ar.find(e=>e.id===n.id);if(!t)continue;if(this.currentSegment[t.flag])continue;let r=this.reader.requestSliceRange(e+n.segmentPosition,2,ar);if(r instanceof Promise&&(r=await r),!r)continue;const i=dr(r);if(!i)continue;const{id:a,size:s}=i;if(a!==t.id)continue;xr(s),this.currentSegment[t.flag]=!0;let o=this.reader.requestSlice(r.filePos,s);o instanceof Promise&&(o=await o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const n of this.currentSegment.tracks)null!==n.defaultDurationNs&&(n.defaultDuration=this.currentSegment.timestampFactor*n.defaultDurationNs/1e9);this.currentSegment.tracks.sort((e,t)=>Number(t.disposition.default)-Number(e.disposition.default));const i=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const n of this.currentSegment.cuePoints){const e=i.get(n.trackId);e&&e.cuePoints.push(n)}for(const n of this.currentSegment.tracks){n.cuePoints.sort((e,t)=>e.time-t.time);for(let e=0;e<n.cuePoints.length-1;e++){const t=n.cuePoints[e],r=n.cuePoints[e+1];t.time===r.time&&(n.cuePoints.splice(e+1,1),e--)}}let a=null,s=-1/0;for(const n of this.currentSegment.tracks)n.cuePoints.length>s&&(s=n.cuePoints.length,a=n);for(const n of this.currentSegment.tracks)0===n.cuePoints.length&&(n.cuePoints=a.cuePoints);this.currentSegment=null}async readCluster(e,r){if(r.lastReadCluster?.elementStartPos===e)return r.lastReadCluster;let a=this.reader.requestSliceRange(e,2,ar);a instanceof Promise&&(a=await a),t(a);const s=e,n=dr(a);t(n);t(n.id===Zt.Cluster);let o=n.size;const c=a.filePos;if(void 0===o){o=(await fr(this.reader,c,ir,r.elementEndPos)).pos-c}let l=this.reader.requestSlice(c,o);l instanceof Promise&&(l=await l);const d={segment:r,elementStartPos:s,elementEndPos:c+o,dataStartPos:c,timestamp:-1,trackData:new Map};if(this.currentCluster=d,l){const e=this.readContiguousElements(l,ir);d.elementEndPos=e}for(const[,u]of d.trackData){const e=u.track;t(u.blocks.length>0);let r=!1;for(let t=0;t<u.blocks.length;t++){const e=u.blocks[t];e.timestamp+=d.timestamp,r||(r=e.lacing!==Cr.None)}u.presentationTimestamps=u.blocks.map((e,t)=>({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let t=0;t<u.presentationTimestamps.length;t++){const r=u.presentationTimestamps[t],i=u.blocks[r.blockIndex];if(null===u.firstKeyFrameTimestamp&&i.isKeyFrame&&(u.firstKeyFrameTimestamp=i.timestamp),t<u.presentationTimestamps.length-1){const e=u.presentationTimestamps[t+1];i.duration=e.timestamp-i.timestamp}else 0===i.duration&&null!=e.defaultDuration&&i.lacing===Cr.None&&(i.duration=e.defaultDuration)}r&&(this.expandLacedBlocks(u.blocks,e),u.presentationTimestamps=u.blocks.map((e,t)=>({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const a=u.blocks[u.presentationTimestamps[0].blockIndex],n=u.blocks[i(u.presentationTimestamps).blockIndex];u.startTimestamp=a.timestamp,u.endTimestamp=n.timestamp+n.duration;const o=S(e.clusterPositionCache,u.startTimestamp,e=>e.startTimestamp);-1!==o&&e.clusterPositionCache[o].elementStartPos===s||e.clusterPositionCache.splice(o+1,0,{elementStartPos:d.elementStartPos,startTimestamp:u.startTimestamp})}return r.lastReadCluster=d,d}getTrackDataInCluster(e,t){let r=e.trackData.get(t);if(!r){const i=e.segment.tracks.find(e=>e.id===t);if(!i)return null;r={track:i,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,r)}return r}expandLacedBlocks(e,r){for(let i=0;i<e.length;i++){const a=e[i];if(a.lacing===Cr.None)continue;a.decoded||(a.data=this.decodeBlockData(r,a.data),a.decoded=!0);const s=ra.tempFromBytes(a.data),n=[],o=sa(s)+1;switch(a.lacing){case Cr.Xiph:{let e=0;for(let t=0;t<o-1;t++){let t=0;for(;s.bufferPos<s.length;){const r=sa(s);if(t+=r,r<255){n.push(t),e+=t;break}}}n.push(s.length-(s.bufferPos+e))}break;case Cr.FixedSize:{const e=s.length-1,t=Math.floor(e/o);for(let r=0;r<o;r++)n.push(t)}break;case Cr.Ebml:{const e=nr(s);t(null!==e);let r=e;n.push(r);let i=r;for(let a=1;a<o-1;a++){const e=s.bufferPos,a=nr(s);t(null!==a);r+=a-((1<<7*(s.bufferPos-e)-1)-1),n.push(r),i+=r}n.push(s.length-(s.bufferPos+i))}break;default:t(!1)}t(n.length===o),e.splice(i,1);const c=a.duration||o*(r.defaultDuration??0);for(let t=0;t<o;t++){const r=n[t],l=aa(s,r),d=a.timestamp+c*t/o,u=c/o;e.splice(i+t,0,{timestamp:d,duration:u,isKeyFrame:a.isKeyFrame,data:l,lacing:Cr.None,decoded:!0,mainAdditional:a.mainAdditional})}i+=o,i--}}async loadSegmentMetadata(e){for(const r of e.seekEntries){if(r.id!==Zt.Tags||e.tagsSeen){if(r.id!==Zt.Attachments||e.attachmentsSeen)continue}else;let i=this.reader.requestSliceRange(e.dataStartPos+r.segmentPosition,2,ar);if(i instanceof Promise&&(i=await i),!i)continue;const a=dr(i);if(!a||a.id!==r.id)continue;const{size:s}=a;xr(s),t(!this.currentSegment),this.currentSegment=e;let n=this.reader.requestSlice(i.filePos,s);n instanceof Promise&&(n=await n),n&&this.readContiguousElements(n),this.currentSegment=null,r.id===Zt.Tags?e.tagsSeen=!0:r.id===Zt.Attachments&&(e.attachmentsSeen=!0)}}readContiguousElements(e,t){for(;e.remainingLength>=2;){const r=e.filePos;if(!this.traverseElement(e,t))return r}return e.filePos}traverseElement(e,i){const a=dr(e);if(!a)return!1;if(i&&i.includes(a.id))return!1;const{id:s,size:n}=a,o=e.filePos;switch(xr(n),s){case Zt.DocType:this.isWebM="webm"===ur(e,n);break;case Zt.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(o,n)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case Zt.SeekID:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=or(e,n)}break;case Zt.SeekPosition:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=or(e,n)}break;case Zt.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=or(e,n),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case Zt.Duration:if(!this.currentSegment)break;this.currentSegment.duration=mr(e,n);break;case Zt.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...te},inputTrack:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:D,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(o,n)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>"decompress"!==e.data?.type||e.scope!==Br.Block||e.data.algorithm!==Fr.HeaderStripping)&&(console.warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){this.currentTrack.codecId===gr?(this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===kr?(this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===br?this.currentTrack.info.codec="vp8":t===Tr?this.currentTrack.info.codec="vp9":t===yr&&(this.currentTrack.info.codec="av1");const e=this.currentTrack,r=new Rt(this.input,new zr(e));this.currentTrack.inputTrack=r,this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type&&-1!==this.currentTrack.info.numberOfChannels&&-1!==this.currentTrack.info.sampleRate){t===wr?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2")},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Sr?this.currentTrack.info.codec="mp3":t===Ir?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=ue):t===vr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Pr?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack,r=new Mt(this.input,new Or(e));this.currentTrack.inputTrack=r,this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case Zt.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=or(e,n);break;case Zt.TrackType:{if(!this.currentTrack)break;const t=or(e,n);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,rotation:0,codec:null,codecDescription:null,colorSpace:null,alphaMode:!1}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:-1,sampleRate:-1,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case Zt.FlagEnabled:if(!this.currentTrack)break;or(e,n)||(this.currentTrack=null);break;case Zt.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!or(e,n);break;case Zt.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!or(e,n);break;case Zt.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!or(e,n);break;case Zt.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!or(e,n);break;case Zt.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!or(e,n);break;case Zt.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!or(e,n);break;case Zt.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=ur(e,n);break;case Zt.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=aa(e,n);break;case Zt.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=or(e,n);break;case Zt.Name:if(!this.currentTrack)break;this.currentTrack.name=hr(e,n);break;case Zt.Language:if(!this.currentTrack)break;if(this.currentTrack.languageCode!==D)break;this.currentTrack.languageCode=ur(e,n),M(this.currentTrack.languageCode)||(this.currentTrack.languageCode=D);break;case Zt.LanguageBCP47:{if(!this.currentTrack)break;const t=ur(e,n).split("-")[0];this.currentTrack.languageCode=t||D}break;case Zt.Video:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(o,n));break;case Zt.PixelWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.width=or(e,n);break;case Zt.PixelHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.height=or(e,n);break;case Zt.AlphaMode:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.alphaMode=1===or(e,n);break;case Zt.Colour:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.colorSpace={},this.readContiguousElements(e.slice(o,n));break;case Zt.MatrixCoefficients:{if("video"!==this.currentTrack?.info?.type||!this.currentTrack.info.colorSpace)break;const t=or(e,n),r=g[t]??null;this.currentTrack.info.colorSpace.matrix=r}break;case Zt.Range:if("video"!==this.currentTrack?.info?.type||!this.currentTrack.info.colorSpace)break;this.currentTrack.info.colorSpace.fullRange=2===or(e,n);break;case Zt.TransferCharacteristics:{if("video"!==this.currentTrack?.info?.type||!this.currentTrack.info.colorSpace)break;const t=or(e,n),r=f[t]??null;this.currentTrack.info.colorSpace.transfer=r}break;case Zt.Primaries:{if("video"!==this.currentTrack?.info?.type||!this.currentTrack.info.colorSpace)break;const t=or(e,n),r=h[t]??null;this.currentTrack.info.colorSpace.primaries=r}break;case Zt.Projection:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(o,n));break;case Zt.ProjectionPoseRoll:{if("video"!==this.currentTrack?.info?.type)break;const t=-mr(e,n);try{this.currentTrack.info.rotation=r(t)}catch{}}break;case Zt.Audio:if("audio"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(o,n));break;case Zt.SamplingFrequency:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.sampleRate=mr(e,n);break;case Zt.Channels:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.numberOfChannels=or(e,n);break;case Zt.BitDepth:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.bitDepth=or(e,n);break;case Zt.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(o,n)),this.currentCueTime=null;break;case Zt.CueTime:this.currentCueTime=or(e,n);break;case Zt.CueTrackPositions:{if(null===this.currentCueTime)break;t(this.currentSegment);const r={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(r),this.readContiguousElements(e.slice(o,n)),-1!==r.trackId&&-1!==r.clusterPosition||this.currentSegment.cuePoints.pop()}break;case Zt.CueTrack:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=or(e,n)}break;case Zt.CueClusterPosition:{const r=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!r)break;t(this.currentSegment),r.clusterPosition=this.currentSegment.dataStartPos+or(e,n)}break;case Zt.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=or(e,n);break;case Zt.SimpleBlock:{if(!this.currentCluster)break;const t=nr(e);if(null===t)break;const r=this.getTrackDataInCluster(this.currentCluster,t);if(!r)break;const i=la(e),a=sa(e),s=a>>1&3;let c=!!(128&a);"audio"===r.track.info?.type&&r.track.info.codec&&(c=!0);const l=aa(e,n-(e.filePos-o)),d=r.track.decodingInstructions.length>0;r.blocks.push({timestamp:i,duration:0,isKeyFrame:c,data:l,lacing:s,decoded:!d,mainAdditional:null})}break;case Zt.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(o,n)),this.currentBlock=null;break;case Zt.Block:{if(!this.currentCluster)break;const t=nr(e);if(null===t)break;const r=this.getTrackDataInCluster(this.currentCluster,t);if(!r)break;const i=la(e),a=sa(e)>>1&3,s=aa(e,n-(e.filePos-o)),c=r.track.decodingInstructions.length>0;this.currentBlock={timestamp:i,duration:0,isKeyFrame:!0,data:s,lacing:a,decoded:!c,mainAdditional:null},r.blocks.push(this.currentBlock)}break;case Zt.BlockAdditions:this.readContiguousElements(e.slice(o,n));break;case Zt.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(o,n)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case Zt.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=aa(e,n);break;case Zt.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=or(e,n);break;case Zt.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=or(e,n);break;case Zt.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case Zt.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(o,n));break;case Zt.Targets:this.readContiguousElements(e.slice(o,n));break;case Zt.TargetTypeValue:50!==or(e,n)&&(this.currentTagTargetIsMovie=!1);break;case Zt.TagTrackUID:case Zt.TagEditionUID:case Zt.TagChapterUID:case Zt.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case Zt.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(o,n));break;case Zt.TagName:this.currentSimpleTagName=hr(e,n);break;case Zt.TagString:{if(!this.currentSimpleTagName)break;const t=hr(e,n);this.processTagValue(this.currentSimpleTagName,t)}break;case Zt.TagBinary:{if(!this.currentSimpleTagName)break;const t=aa(e,n);this.processTagValue(this.currentSimpleTagName,t)}break;case Zt.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(o,n));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(t.raw??(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new ee(this.currentAttachedFile.fileData,this.currentAttachedFile.fileMediaType??void 0,this.currentAttachedFile.fileName??void 0,this.currentAttachedFile.fileDescription??void 0)),this.currentAttachedFile.fileMediaType?.startsWith("image/")&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let r="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?r="coverFront":t.startsWith("back.")&&(r="coverBack")}t.images??(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:r,name:this.currentAttachedFile.fileName??void 0,description:this.currentAttachedFile.fileDescription??void 0})}this.currentAttachedFile=null}break;case Zt.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let r=0n;for(let i=0;i<t;i++)r<<=8n,r+=BigInt(sa(e));return r})(e,n);break;case Zt.FileName:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileName=hr(e,n);break;case Zt.FileMediaType:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileMediaType=ur(e,n);break;case Zt.FileData:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileData=aa(e,n);break;case Zt.FileDescription:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileDescription=hr(e,n);break;case Zt.ContentEncodings:if(!this.currentTrack)break;this.readContiguousElements(e.slice(o,n)),this.currentTrack.decodingInstructions.sort((e,t)=>t.order-e.order);break;case Zt.ContentEncoding:this.currentDecodingInstruction={order:0,scope:Br.Block,data:null},this.readContiguousElements(e.slice(o,n)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case Zt.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=or(e,n);break;case Zt.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=or(e,n);break;case Zt.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:Fr.Zlib,settings:null},this.readContiguousElements(e.slice(o,n));break;case Zt.ContentCompAlgo:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.algorithm=or(e,n);break;case Zt.ContentCompSettings:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.settings=aa(e,n);break;case Zt.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=o+n,!0}decodeBlockData(e,r){t(e.decodingInstructions.length>0);let i=r;for(const a of e.decodingInstructions)if(t(a.data),"decompress"===a.data.type)if(a.data.algorithm===Fr.HeaderStripping)if(a.data.settings&&a.data.settings.length>0){const e=a.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var r;if(!this.currentSegment?.metadataTags)return;const i=this.currentSegment.metadataTags;if(i.raw??(i.raw={}),(r=i.raw)[e]??(r[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":i.title??(i.title=t);break;case"description":i.description??(i.description=t);break;case"artist":i.artist??(i.artist=t);break;case"album":i.album??(i.album=t);break;case"album_artist":i.albumArtist??(i.albumArtist=t);break;case"genre":i.genre??(i.genre=t);break;case"comment":i.comment??(i.comment=t);break;case"lyrics":i.lyrics??(i.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||(i.date??(i.date=e))}break;case"track_number":case"part_number":{const e=t.split("/"),r=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(r)&&r>0&&(i.trackNumber??(i.trackNumber=r)),a&&Number.isInteger(a)&&a>0&&(i.tracksTotal??(i.tracksTotal=a))}break;case"disc_number":case"disc":{const e=t.split("/"),r=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(r)&&r>0&&(i.discNumber??(i.discNumber=r)),a&&Number.isInteger(a)&&a>0&&(i.discsTotal??(i.discsTotal=a))}}}}class Nr{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}async getFirstTimestamp(){const e=await this.getFirstPacket({metadataOnly:!0});return e?.timestamp??0}getTimeResolution(){return this.internalTrack.segment.timestampFactor}getDisposition(){return this.internalTrack.disposition}async getFirstPacket(e){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)}intoTimescale(e){return A(e*this.internalTrack.segment.timestampFactor)}async getPacket(e,t){const r=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const i=S(t.presentationTimestamps,r,e=>e.timestamp);return{blockIndex:-1!==i?t.presentationTimestamps[i].blockIndex:-1,correctBlockFound:-1!==i&&r<t.endTimestamp}},r,r,t)}async getNextPacket(e,t){const r=this.packetToClusterLocation.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");return this.performClusterLookup(r.cluster,e=>{if(e===r.cluster){const t=e.trackData.get(this.internalTrack.id);if(r.blockIndex+1<t.blocks.length)return{blockIndex:r.blockIndex+1,correctBlockFound:!0}}else{if(e.trackData.get(this.internalTrack.id))return{blockIndex:0,correctBlockFound:!0}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)}async getKeyPacket(e,t){const r=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const i=x(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=r);return{blockIndex:-1!==i?t.presentationTimestamps[i].blockIndex:-1,correctBlockFound:-1!==i&&r<t.endTimestamp}},r,r,t)}async getNextKeyPacket(e,r){const i=this.packetToClusterLocation.get(e);if(void 0===i)throw new Error("Packet was not created from this track.");return this.performClusterLookup(i.cluster,e=>{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const r=e.trackData.get(this.internalTrack.id);if(r&&null!==r.firstKeyFrameTimestamp){const e=r.blocks.findIndex(e=>e.isKeyFrame);return t(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,r)}async fetchPacketInCluster(e,r,i){if(-1===r)return null;const a=e.trackData.get(this.internalTrack.id).blocks[r];t(a),a.decoded||(a.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,a.data),a.decoded=!0);const s=i.metadataOnly?Ge:a.data,n=a.timestamp/this.internalTrack.segment.timestampFactor,o=a.duration/this.internalTrack.segment.timestampFactor,c={};a.mainAdditional&&"video"===this.internalTrack.info?.type&&this.internalTrack.info.alphaMode&&(c.alpha=i.metadataOnly?Ge:a.mainAdditional,c.alphaByteLength=a.mainAdditional.byteLength);const l=new Xe(s,a.isKeyFrame?"key":"delta",n,o,e.dataStartPos+r,a.data.byteLength,c);return this.packetToClusterLocation.set(l,{cluster:e,blockIndex:r}),l}async performClusterLookup(e,r,i,a,s){const{demuxer:n,segment:o}=this.internalTrack;let c=null,l=null,d=-1;if(e){const{blockIndex:t,correctBlockFound:i}=r(e);if(i)return this.fetchPacketInCluster(e,t,s);-1!==t&&(l=e,d=t)}const u=S(this.internalTrack.cuePoints,i,e=>e.time),h=-1!==u?this.internalTrack.cuePoints[u]:null,m=S(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),f=-1!==m?this.internalTrack.clusterPositionCache[m]:null,p=Math.max(h?.clusterPosition??0,f?.elementStartPos??0)||null;let g;for(e?null===p||e.elementStartPos>=p?(g=e.elementEndPos,c=e):g=p:g=p??o.clusterSeekStartPos;null===o.elementEndPos||g<=o.elementEndPos-2;){if(c){const e=c.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>a)break}let e=n.reader.requestSliceRange(g,2,ar);if(e instanceof Promise&&(e=await e),!e)break;const i=g,u=dr(e);if(!u||!rr.includes(u.id)&&u.id!==Zt.Void){const e=await pr(n.reader,i,rr,Math.min(o.elementEndPos??1/0,i+Rr));if(e){g=e;continue}break}const h=u.id;let m=u.size;const f=e.filePos;if(h===Zt.Cluster){c=await n.readCluster(i,o),m=c.elementEndPos-f;const{blockIndex:e,correctBlockFound:t}=r(c);if(t)return this.fetchPacketInCluster(c,e,s);-1!==e&&(l=c,d=e)}if(void 0===m){t(h!==Zt.Cluster);m=(await fr(n.reader,f,ir,o.elementEndPos)).pos-f}const p=f+m;if(null===o.elementEndPos){let e=n.reader.requestSliceRange(p,2,ar);if(e instanceof Promise&&(e=await e),!e)break;if(cr(e)===Zt.Segment){o.elementEndPos=p;break}}g=p}if(h&&(!l||l.elementStartPos<h.clusterPosition)){const e=this.internalTrack.cuePoints[u-1];t(!e||e.time<h.time);const i=e?.time??-1/0;return this.performClusterLookup(null,r,i,a,s)}return l?this.fetchPacketInCluster(l,d,s):null}}class zr extends Nr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getRotation(){return this.internalTrack.info.rotation}async getColorSpace(){return{primaries:this.internalTrack.info.colorSpace?.primaries,transfer:this.internalTrack.info.colorSpace?.transfer,matrix:this.internalTrack.info.colorSpace?.matrix,fullRange:this.internalTrack.info.colorSpace?.fullRange}}async canBeTransparent(){return this.internalTrack.info.alphaMode}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{let e=null;return("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(e=await this.getFirstPacket({})),{codec:ne({width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&e?Pe(e.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&e?Be(e.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&e?ze(e.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&e?Le(e.data):null}),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}})()):null}}class Or extends Nr{constructor(e){super(e),this.decoderConfig=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfig??(this.decoderConfig={codec:oe({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}):null}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */const Lr=[44100,48e3,32e3],Ur=[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,-1,-1,32,48,56,64,80,96,112,128,160,192,224,256,320,384,-1,-1,32,64,96,128,160,192,224,256,288,320,352,384,416,448,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,32,48,56,64,80,96,112,128,144,160,176,192,224,256,-1],Vr=(e,t)=>{const r=e>>>24,i=e>>>16&255,a=e>>>8&255,s=255&e;if(255!==r&&255!==i&&255!==a&&255!==s)return{header:null,bytesAdvanced:4};if(255!==r)return{header:null,bytesAdvanced:1};if(224!==(224&i))return{header:null,bytesAdvanced:1};let n=0,o=0;16&i?n=8&i?0:1:(n=1,o=1);const c=i>>3&3,l=i>>1&3,d=(a>>2&3)%3,u=s>>6&3,h=s>>4&3,m=s>>3&1,f=s>>2&1,p=3&s,g=Ur[16*n*4+16*l+(a>>4&15)];if(-1===g)return{header:null,bytesAdvanced:1};const k=1e3*g,b=Lr[d]>>n+o,T=((e,t,r,i,a)=>0===t?0:1===t?Math.floor(144*r/(i<<e))+a:2===t?Math.floor(144*r/i)+a:4*(Math.floor(12*r/i)+a))(n,l,k,b,a>>1&1);if(null!==t&&t<T)return{header:null,bytesAdvanced:1};let y;return y=3===c?3===l?384:1152:3===l?384:2===l?1152:576,{header:{totalSize:T,mpegVersionId:c,layer:l,bitrate:k,frequencyIndex:d,sampleRate:b,channel:u,modeExtension:h,copyright:m,original:f,emphasis:p,audioSamplesInFrame:y},bytesAdvanced:1}},qr=e=>{let t=2130706432,r=0;for(;0!==t;)r>>=1,r|=e&t,t>>=8;return r};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
var Hr,Wr,jr,Kr;(Wr=Hr||(Hr={}))[Wr.Unsynchronisation=128]="Unsynchronisation",Wr[Wr.ExtendedHeader=64]="ExtendedHeader",Wr[Wr.ExperimentalIndicator=32]="ExperimentalIndicator",Wr[Wr.Footer=16]="Footer",(Kr=jr||(jr={}))[Kr.ISO_8859_1=0]="ISO_8859_1",Kr[Kr.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",Kr[Kr.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",Kr[Kr.UTF_8=3]="UTF_8";const $r=128,Qr=["Blues","Classic rock","Country","Dance","Disco","Funk","Grunge","Hip-hop","Jazz","Metal","New age","Oldies","Other","Pop","Rhythm and blues","Rap","Reggae","Rock","Techno","Industrial","Alternative","Ska","Death metal","Pranks","Soundtrack","Euro-techno","Ambient","Trip-hop","Vocal","Jazz & funk","Fusion","Trance","Classical","Instrumental","Acid","House","Game","Sound clip","Gospel","Noise","Alternative rock","Bass","Soul","Punk","Space","Meditative","Instrumental pop","Instrumental rock","Ethnic","Gothic","Darkwave","Techno-industrial","Electronic","Pop-folk","Eurodance","Dream","Southern rock","Comedy","Cult","Gangsta","Top 40","Christian rap","Pop/funk","Jungle music","Native US","Cabaret","New wave","Psychedelic","Rave","Showtunes","Trailer","Lo-fi","Tribal","Acid punk","Acid jazz","Polka","Retro","Musical","Rock 'n' roll","Hard rock","Folk","Folk rock","National folk","Swing","Fast fusion","Bebop","Latin","Revival","Celtic","Bluegrass","Avantgarde","Gothic rock","Progressive rock","Psychedelic rock","Symphonic rock","Slow rock","Big band","Chorus","Easy listening","Acoustic","Humour","Speech","Chanson","Opera","Chamber music","Sonata","Symphony","Booty bass","Primus","Porn groove","Satire","Slow jam","Club","Tango","Samba","Folklore","Ballad","Power ballad","Rhythmic Soul","Freestyle","Duet","Punk rock","Drum solo","A cappella","Euro-house","Dance hall","Goa music","Drum & bass","Club-house","Hardcore techno","Terror","Indie","Britpop","Negerpunk","Polsk punk","Beat","Christian gangsta rap","Heavy metal","Black metal","Crossover","Contemporary Christian","Christian rock","Merengue","Salsa","Thrash metal","Anime","Jpop","Synthpop","Christmas","Art rock","Baroque","Bhangra","Big beat","Breakbeat","Chillout","Downtempo","Dub","EBM","Eclectic","Electro","Electroclash","Emo","Experimental","Garage","Global","IDM","Illbient","Industro-Goth","Jam Band","Krautrock","Leftfield","Lounge","Math rock","New romantic","Nu-breakz","Post-punk","Post-rock","Psytrance","Shoegaze","Space rock","Trop rock","World music","Neoclassical","Audiobook","Audio theatre","Neue Deutsche Welle","Podcast","Indie rock","G-Funk","Dubstep","Garage rock","Psybient"],Gr=(e,t)=>{const r=aa(e,t),i=Q(r.indexOf(0),r.length),a=r.subarray(0,i);let s="";for(let n=0;n<a.length;n++)s+=String.fromCharCode(a[n]);return s.trimEnd()},Xr=e=>{const t=e.filePos,r=ya(e,3),i=sa(e),a=sa(e),s=sa(e),n=ua(e);if("ID3"!==r||255===i||255===a||0!==(2155905152&n))return e.filePos=t,null;return{majorVersion:i,revision:a,flags:s,size:qr(n)}},Yr=(e,t,r)=>{var i,a,s,n;if(![2,3,4].includes(t.majorVersion))return void console.warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const o=aa(e,t.size),c=new Jr(t,o);if(t.flags&Hr.Footer&&c.removeFooter(),t.flags&Hr.Unsynchronisation&&3===t.majorVersion&&c.ununsynchronizeAll(),t.flags&Hr.ExtendedHeader){const e=c.readU32();3===t.majorVersion?c.pos+=e:c.pos+=e-4}for(;c.pos<=c.bytes.length-c.frameHeaderSize();){const e=c.readId3V2Frame();if(!e)break;const o=c.pos,l=c.pos+e.size;let d=!1,u=!1,h=!1;if(3===t.majorVersion?(d=!!(64&e.flags),u=!!(128&e.flags)):4===t.majorVersion&&(d=!!(4&e.flags),u=!!(8&e.flags),h=!!(2&e.flags)||!!(t.flags&Hr.Unsynchronisation)),d)console.warn(`Skipping encrypted ID3v2 frame ${e.id}`),c.pos=l;else if(u)console.warn(`Skipping compressed ID3v2 frame ${e.id}`),c.pos=l;else{switch(h&&c.ununsynchronizeRegion(c.pos,l),r.raw??(r.raw={}),"T"===e.id[0]?(i=r.raw)[a=e.id]??(i[a]=c.readId3V2EncodingAndText(l)):(s=r.raw)[n=e.id]??(s[n]=c.readBytes(e.size)),c.pos=o,e.id){case"TIT2":case"TT2":r.title??(r.title=c.readId3V2EncodingAndText(l));break;case"TIT3":case"TT3":r.description??(r.description=c.readId3V2EncodingAndText(l));break;case"TPE1":case"TP1":r.artist??(r.artist=c.readId3V2EncodingAndText(l));break;case"TALB":case"TAL":r.album??(r.album=c.readId3V2EncodingAndText(l));break;case"TPE2":case"TP2":r.albumArtist??(r.albumArtist=c.readId3V2EncodingAndText(l));break;case"TRCK":case"TRK":{const e=c.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(r.trackNumber??(r.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(r.tracksTotal??(r.tracksTotal=i))}break;case"TPOS":case"TPA":{const e=c.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(r.discNumber??(r.discNumber=t)),i&&Number.isInteger(i)&&i>0&&(r.discsTotal??(r.discsTotal=i))}break;case"TCON":case"TCO":{const e=c.readId3V2EncodingAndText(l);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==Qr[e]){r.genre??(r.genre=Qr[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==Qr[e]){r.genre??(r.genre=Qr[e]);break}}r.genre??(r.genre=e)}break;case"TDRC":case"TDAT":{const e=c.readId3V2EncodingAndText(l),t=new Date(e);Number.isNaN(t.getTime())||(r.date??(r.date=t))}break;case"TYER":case"TYE":{const e=c.readId3V2EncodingAndText(l),t=Number.parseInt(e,10);Number.isInteger(t)&&(r.date??(r.date=new Date(t,0,1)))}break;case"USLT":case"ULT":{const e=c.readU8();c.pos+=3,c.readId3V2Text(e,l),r.lyrics??(r.lyrics=c.readId3V2Text(e,l))}break;case"COMM":case"COM":{const e=c.readU8();c.pos+=3,c.readId3V2Text(e,l),r.comment??(r.comment=c.readId3V2Text(e,l))}break;case"APIC":case"PIC":{const e=c.readId3V2TextEncoding();let i;if(2===t.majorVersion){const e=c.readAscii(3);i="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else i=c.readId3V2Text(e,l);const a=c.readU8(),s=c.readId3V2Text(e,l).trimEnd(),n=l-c.pos;if(n>=0){const e=c.readBytes(n);r.images||(r.images=[]),r.images.push({data:e,mimeType:i,kind:3===a?"coverFront":4===a?"coverBack":"unknown",description:s})}}break;default:c.pos+=e.size}c.pos=l}}};class Jr{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 2===this.header.majorVersion?6:10}ununsynchronizeAll(){const e=[];for(let t=0;t<this.bytes.length;t++){const r=this.bytes[t];if(e.push(r),255===r&&t!==this.bytes.length-1){0===this.bytes[t]&&t++}}this.bytes=new Uint8Array(e),this.view=new DataView(this.bytes.buffer)}ununsynchronizeRegion(e,t){const r=[];for(let s=e;s<t;s++){const e=this.bytes[s];if(r.push(e),255===e&&s!==t-1){0===this.bytes[s+1]&&s++}}const i=this.bytes.subarray(0,e),a=this.bytes.subarray(t);this.bytes=new Uint8Array(i.length+r.length+a.length),this.bytes.set(i,0),this.bytes.set(r,i.length),this.bytes.set(a,i.length+r.length),this.view=new DataView(this.bytes.buffer)}removeFooter(){this.bytes=this.bytes.subarray(0,this.bytes.length-10),this.view=new DataView(this.bytes.buffer)}readBytes(e){const t=this.bytes.subarray(this.pos,this.pos+e);return this.pos+=e,t}readU8(){const e=this.view.getUint8(this.pos);return this.pos+=1,e}readU16(){const e=this.view.getUint16(this.pos,!1);return this.pos+=2,e}readU24(){const e=this.view.getUint16(this.pos,!1),t=this.view.getUint8(this.pos+1);return this.pos+=3,256*e+t}readU32(){const e=this.view.getUint32(this.pos,!1);return this.pos+=4,e}readAscii(e){let t="";for(let r=0;r<e;r++)t+=String.fromCharCode(this.view.getUint8(this.pos+r));return this.pos+=e,t}readId3V2Frame(){if(2===this.header.majorVersion){const e=this.readAscii(3);if("\0\0\0"===e)return null;return{id:e,size:this.readU24(),flags:0}}{const e=this.readAscii(4);if("\0\0\0\0"===e)return null;const t=this.readU32();let r=4===this.header.majorVersion?qr(t):t;const i=this.readU16(),a=this.pos,s=e=>{const t=this.pos+e;if(t>this.bytes.length)return!1;if(t<=this.bytes.length-this.frameHeaderSize()){this.pos+=e;const t=this.readAscii(4);if("\0\0\0\0"!==t&&!/[0-9A-Z]{4}/.test(t))return!1}return!0};if(!s(r)){const e=4===this.header.majorVersion?t:qr(t);s(e)&&(r=e)}return this.pos=a,{id:e,size:r,flags:i}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const r=this.pos,i=this.readBytes(t-this.pos);switch(e){case jr.ISO_8859_1:{let e="";for(let t=0;t<i.length;t++){const a=i[t];if(0===a){this.pos=r+t+1;break}e+=String.fromCharCode(a)}return e}case jr.UTF_16_WITH_BOM:if(255===i[0]&&254===i[1]){const e=new TextDecoder("utf-16le"),t=Q(i.findIndex((e,t)=>0===e&&0===i[t+1]&&t%2===0),i.length);return this.pos=r+Math.min(t+2,i.length),e.decode(i.subarray(2,t))}if(254===i[0]&&255===i[1]){const e=new TextDecoder("utf-16be"),t=Q(i.findIndex((e,t)=>0===e&&0===i[t+1]&&t%2===0),i.length);return this.pos=r+Math.min(t+2,i.length),e.decode(i.subarray(2,t))}{const e=Q(i.findIndex(e=>0===e),i.length);return this.pos=r+Math.min(e+1,i.length),l.decode(i.subarray(0,e))}case jr.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=Q(i.findIndex((e,t)=>0===e&&0===i[t+1]&&t%2===0),i.length);return this.pos=r+Math.min(t+2,i.length),e.decode(i.subarray(0,t))}case jr.UTF_8:{const e=Q(i.findIndex(e=>0===e),i.length);return this.pos=r+Math.min(e+1,i.length),l.decode(i.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */const Zr=async(e,t,r)=>{let i=t;for(;null===r||i<r;){let t=e.requestSlice(i,4);if(t instanceof Promise&&(t=await t),!t)break;const r=ua(t),a=Vr(r,null!==e.fileSize?e.fileSize-i:null);if(a.header)return{header:a.header,startPos:i};i+=a.bytesAdvanced}return null};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */class ei extends Ke{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.tracks=[],this.readingMutex=new b,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();if(!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.tracks=[new Mt(this.input,new ti(this))]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,10);if(e instanceof Promise&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=Xr(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=await Zr(this.reader,this.lastLoadedPos,this.reader.fileSize);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const r=(i=t.mpegVersionId,a=t.channel,3===i?3===a?21:36:3===a?13:21);var i,a;let s=this.reader.requestSlice(e.startPos+r,4);if(s instanceof Promise&&(s=await s),s){const e=ua(s);if(1483304551===e||1231971951===e)return}this.firstFrameHeader||(this.firstFrameHeader=t),t.sampleRate!==this.firstFrameHeader.sampleRate&&console.warn(`MP3 changed sample rate mid-file: ${this.firstFrameHeader.sampleRate} Hz to ${t.sampleRate} Hz. Might be a bug, so please report this file.`);const n=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,o={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:n,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(o),this.nextTimestampInSamples+=t.audioSamplesInFrame}async getMimeType(){return"audio/mpeg"}async getTracks(){return await this.readMetadata(),this.tracks}async computeDuration(){await this.readMetadata();const e=this.tracks[0];return t(e),e.computeDuration()}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,r=!1;for(;;){let t=this.reader.requestSlice(e,10);if(t instanceof Promise&&(t=await t),!t)break;const i=Xr(t);if(!i)break;r=!0;let a=this.reader.requestSlice(t.filePos,i.size);if(a instanceof Promise&&(a=await a),!a)break;Yr(a,i,this.metadataTags),e=t.filePos+i.size}if(!r&&null!==this.reader.fileSize&&this.reader.fileSize>=$r){let e=this.reader.requestSlice(this.reader.fileSize-$r,$r);e instanceof Promise&&(e=await e),t(e);"TAG"===ya(e,3)&&((e,t)=>{var r;const i=e.filePos;t.raw??(t.raw={}),(r=t.raw).TAG??(r.TAG=aa(e,125)),e.filePos=i;const a=Gr(e,30);a&&(t.title??(t.title=a));const s=Gr(e,30);s&&(t.artist??(t.artist=s));const n=Gr(e,30);n&&(t.album??(t.album=n));const o=Gr(e,4),c=Number.parseInt(o,10);Number.isInteger(c)&&c>0&&(t.date??(t.date=new Date(c,0,1)));const l=aa(e,30);let d;if(0===l[28]&&0!==l[29]){const r=l[29];r>0&&(t.trackNumber??(t.trackNumber=r)),e.skip(-30),d=Gr(e,28),e.skip(2)}else e.skip(-30),d=Gr(e,30);d&&(t.comment??(t.comment=d));const u=sa(e);u<Qr.length&&(t.genre??(t.genre=Qr[u]))})(e,this.metadataTags)}return this.metadataTags}finally{e()}}}class ti{constructor(e){this.demuxer=e}getId(){return 1}async getFirstTimestamp(){return 0}getTimeResolution(){return t(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}getName(){return null}getLanguageCode(){return D}getCodec(){return"mp3"}getInternalCodecId(){return null}getNumberOfChannels(){return t(this.demuxer.firstFrameHeader),3===this.demuxer.firstFrameHeader.channel?1:2}getSampleRate(){return t(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate}getDisposition(){return{...te}}async getDecoderConfig(){return t(this.demuxer.firstFrameHeader),{codec:"mp3",numberOfChannels:3===this.demuxer.firstFrameHeader.channel?1:2,sampleRate:this.demuxer.firstFrameHeader.sampleRate}}async getPacketAtIndex(e,t){if(-1===e)return null;const r=this.demuxer.loadedSamples[e];if(!r)return null;let i;if(t.metadataOnly)i=Ge;else{let e=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(e instanceof Promise&&(e=await e),!e)return null;i=aa(e,r.dataSize)}return new Xe(i,"key",r.timestamp,r.duration,e,r.dataSize)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getNextPacket(e,t){const r=await this.demuxer.readingMutex.acquire();try{const r=w(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===r)throw new Error("Packet was not created from this track.");const i=r+1;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{r()}}async getPacket(e,t){const r=await this.demuxer.readingMutex.acquire();try{for(;;){const r=S(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===r&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(r,t);if(r>=0&&r+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(r,t);await this.demuxer.advanceReader()}}finally{r()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */const ri=1399285583,ii=new Uint32Array(256);for(let xa=0;xa<256;xa++){let e=xa<<24;for(let t=0;t<8;t++)e=2147483648&e?e<<1^79764919:e<<1;ii[xa]=e>>>0&4294967295}const ai=e=>{const t=c(e),r=t.getUint32(22,!0);t.setUint32(22,0,!0);let i=0;for(let a=0;a<e.length;a++){const t=e[a];i=(i<<8^ii[i>>>24^t])>>>0}return t.setUint32(22,r,!0),i},si=(e,r,i)=>{let a=0,s=null;if(e.length>0)if("vorbis"===r.codec){t(r.vorbisInfo);const n=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(r.vorbisInfo.modeBlockflags.length-1))-1<<1,o=(e[0]&n)>>1;if(o>=r.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let c=i;const l=r.vorbisInfo.modeBlockflags[o];if(s=r.vorbisInfo.blocksizes[l],1===l){const t=1+(1|n),i=e[0]&t?1:0;c=r.vorbisInfo.blocksizes[i]}a=null!==c?c+s>>2:0}else if("opus"===r.codec){a=(e=>{const t=e[0]>>3;return{durationInSamples:Ue[t]}})(e).durationInSamples}return{durationInSamples:a,vorbisBlockSize:s}},ni=27,oi=282,ci=e=>{const t=e.filePos;if(ha(e)!==ri)return null;e.skip(1);const r=sa(e),i=ka(e),a=ha(e),s=ha(e),n=ha(e),o=sa(e),c=new Uint8Array(o);for(let u=0;u<o;u++)c[u]=sa(e);const l=27+o,d=c.reduce((e,t)=>e+t,0);return{headerStartPos:t,totalSize:l+d,dataStartPos:t+l,dataSize:d,headerType:r,granulePosition:i,serialNumber:a,sequenceNumber:s,checksum:n,lacingValues:c}},li=(e,t)=>{for(;e.filePos<t-3;){const t=ha(e),r=79;if((255&t)===r||(t>>>8&255)===r||(t>>>16&255)===r||(t>>>24&255)===r){if(e.skip(-4),t===ri)return!0;e.skip(1)}}return!1};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
class di extends Ke{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.tracks=[],this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,ni,oi);if(t instanceof Promise&&(t=await t),!t)break;const r=ci(t);if(!r)break;if(!!!(2&r.headerType))break;this.bitstreams.push({serialNumber:r.serialNumber,bosPage:r,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=r.headerStartPos+r.totalSize}for(const t of this.bitstreams){const e=await this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?await this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&await this.readOpusMetadata(e,t),null!==t.codecInfo.codec&&this.tracks.push(new Mt(this.input,new ui(t,this))))}})())}async readVorbisMetadata(e,t){let r=await this.findNextPacketStart(e);if(!r)return;const i=await this.readPacket(r.startPage,r.startSegmentIndex);if(!i)return;if(r=await this.findNextPacketStart(i),!r)return;const a=await this.readPacket(r.startPage,r.startSegmentIndex);if(!a)return;if(3!==i.data[0]||5!==a.data[0])return;const s=[],n=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};n(e.data.length),n(i.data.length);const o=new Uint8Array(1+s.length+e.data.length+i.data.length+a.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(i.data,1+s.length+e.data.length),o.set(a.data,1+s.length+e.data.length+i.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=a;const l=c(e.data);t.numberOfChannels=l.getUint8(11),t.sampleRate=l.getUint32(12,!0);const d=l.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&d),1<<(d>>4)],modeBlockflags:Ve(a.data).modeBlockflags},je(i.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,t){const r=await this.findNextPacketStart(e);if(!r)return;const i=await this.readPacket(r.startPage,r.startSegmentIndex);if(!i)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=i;const a=(e=>{const t=c(e),r=t.getUint8(9),i=t.getUint16(10,!0),a=t.getUint32(12,!0),s=t.getInt16(16,!0),n=t.getUint8(18);let o=null;return n&&(o=e.subarray(19,21+r)),{outputChannelCount:r,preSkip:i,inputSampleRate:a,outputGain:s,channelMappingFamily:n,channelMappingTable:o}})(e.data);t.numberOfChannels=a.outputChannelCount,t.sampleRate=ue,t.codecInfo.opusInfo={preSkip:a.preSkip},je(i.data.subarray(8),this.metadataTags)}async readPacket(e,r){t(r<e.lacingValues.length);let i=0;for(let t=0;t<r;t++)i+=e.lacingValues[t];let a=e,s=i,n=r;const o=[];e:for(;;){let r=this.reader.requestSlice(a.dataStartPos,a.dataSize);r instanceof Promise&&(r=await r),t(r);const c=aa(r,a.dataSize);for(;;){if(n===a.lacingValues.length){o.push(c.subarray(i,s));break}const e=a.lacingValues[n];if(s+=e,e<255){o.push(c.subarray(i,s));break e}n++}let l=a.headerStartPos+a.totalSize;for(;;){let t=this.reader.requestSliceRange(l,ni,oi);if(t instanceof Promise&&(t=await t),!t)return null;const r=ci(t);if(!r)return null;if(a=r,a.serialNumber===e.serialNumber)break;l=a.headerStartPos+a.totalSize}i=0,s=0,n=0}const c=o.reduce((e,t)=>e+t.length,0);if(0===c)return null;const l=new Uint8Array(c);let d=0;for(let t=0;t<o.length;t++){const e=o[t];l.set(e,d),d+=e.length}return{data:l,endPage:a,endSegmentIndex:n}}async findNextPacketStart(e){if(e.endSegmentIndex<e.endPage.lacingValues.length-1)return{startPage:e.endPage,startSegmentIndex:e.endSegmentIndex+1};if(!!(4&e.endPage.headerType))return null;let t=e.endPage.headerStartPos+e.endPage.totalSize;for(;;){let r=this.reader.requestSliceRange(t,ni,oi);if(r instanceof Promise&&(r=await r),!r)return null;const i=ci(r);if(!i)return null;if(i.serialNumber===e.endPage.serialNumber)return{startPage:i,startSegmentIndex:0};t=i.headerStartPos+i.totalSize}}async getMimeType(){await this.readMetadata();return(e=>{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(await Promise.all(this.tracks.map(e=>e.getCodecParameterString()))).filter(Boolean)})}async getTracks(){return await this.readMetadata(),this.tracks}async computeDuration(){const e=await this.getTracks(),t=await Promise.all(e.map(e=>e.computeDuration()));return Math.max(0,...t)}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}class ui{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new b,this.internalSampleRate="opus"===e.codecInfo.codec?ue:e.sampleRate}getId(){return this.bitstream.serialNumber}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return t(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:this.bitstream.description??void 0}}getName(){return null}getLanguageCode(){return D}getDisposition(){return{...te}}async getFirstTimestamp(){return 0}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(t(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,r){if(!e)return null;const{durationInSamples:i,vorbisBlockSize:a}=si(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Xe(r.metadataOnly?Ge:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,i/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:i,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(e){t(this.bitstream.lastMetadataPacket);const r=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!r)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(t(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const a=await this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(a,{timestampInSamples:i,vorbisLastBlocksize:null},e)}async getNextPacket(e,t){const r=this.encodedPacketToMetadata.get(e);if(!r)throw new Error("Packet was not created from this track.");const i=await this.demuxer.findNextPacketStart(r.packet);if(!i)return null;const a=r.timestampInSamples+r.durationInSamples,s=await this.demuxer.readPacket(i.startPage,i.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:a,vorbisLastBlocksize:r.vorbisBlockSize},t)}async getPacket(e,r){if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,r);const i=A(e*this.internalSampleRate);if(0===i)return this.getFirstPacket(r);if(i<0)return null;t(this.bitstream.lastMetadataPacket);const a=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!a)return null;let s=a.startPage,n=this.demuxer.reader.fileSize;const o=[s];e:for(;s.headerStartPos+s.totalSize<n;){const e=s.headerStartPos,r=Math.floor((e+n)/2);let a=r;for(;;){const e=Math.min(a+65307,n-ni);let c=this.demuxer.reader.requestSlice(a,e-a);c instanceof Promise&&(c=await c),t(c);if(!li(c,e)){n=r+ni;continue e}let l=this.demuxer.reader.requestSliceRange(c.filePos,ni,oi);l instanceof Promise&&(l=await l),t(l);const d=ci(l);t(d);let u=!1;if(d.serialNumber===this.bitstream.serialNumber)u=!0;else{let e=this.demuxer.reader.requestSlice(d.headerStartPos,d.totalSize);e instanceof Promise&&(e=await e),t(e);const r=aa(e,d.totalSize);u=ai(r)===d.checksum}if(!u){a=d.headerStartPos+4;continue}if(u&&d.serialNumber!==this.bitstream.serialNumber){a=d.headerStartPos+d.totalSize;continue}if(!(-1===d.granulePosition)){this.granulePositionToTimestampInSamples(d.granulePosition)>i?n=d.headerStartPos:(s=d,o.push(d));continue e}a=d.headerStartPos+d.totalSize}}let c=a.startPage;for(const t of o){if(t.granulePosition===s.granulePosition)break;(!c||t.headerStartPos>c.headerStartPos)&&(c=t)}let l=c;const d=[l];for(;l.serialNumber!==this.bitstream.serialNumber||l.granulePosition!==s.granulePosition;){const e=l.headerStartPos+l.totalSize;let r=this.demuxer.reader.requestSliceRange(e,ni,oi);r instanceof Promise&&(r=await r),t(r);const i=ci(r);t(i),l=i,l.serialNumber===this.bitstream.serialNumber&&d.push(l)}t(-1!==l.granulePosition);let u,h,m=null,f=l,p=0;if(l.headerStartPos===a.startPage.headerStartPos)u=this.granulePositionToTimestampInSamples(0),h=!0,m=0;else{u=0,h=!1;for(let t=l.lacingValues.length-1;t>=0;t--){if(l.lacingValues[t]<255){m=t+1;break}}if(null===m)throw new Error("Invalid page with granule position: no packets end on this page.");p=m-1;const e={data:Ge,endPage:f,endSegmentIndex:p};if(await this.demuxer.findNextPacketStart(e)){const e=mi(d,l,m);t(e);const r=hi(d,e.page,e.segmentIndex);r&&(l=r.page,m=r.segmentIndex)}else for(;;){const e=mi(d,l,m);if(!e)break;const t=hi(d,e.page,e.segmentIndex);if(!t)break;if(l=t.page,m=t.segmentIndex,e.page.headerStartPos!==f.headerStartPos){f=e.page,p=e.segmentIndex;break}}}let g=null,k=null;for(;null!==l;){t(null!==m);const e=await this.demuxer.readPacket(l,m);if(!e)break;if(!(l.headerStartPos===a.startPage.headerStartPos&&m<a.startSegmentIndex)){let a=this.createEncodedPacketFromOggPacket(e,{timestampInSamples:u,vorbisLastBlocksize:k?.vorbisBlockSize??null},r);t(a);let s=this.encodedPacketToMetadata.get(a);if(t(s),h||e.endPage.headerStartPos!==f.headerStartPos||e.endSegmentIndex!==p?u+=s.durationInSamples:(u=this.granulePositionToTimestampInSamples(l.granulePosition),h=!0,a=this.createEncodedPacketFromOggPacket(e,{timestampInSamples:u-s.durationInSamples,vorbisLastBlocksize:k?.vorbisBlockSize??null},r),t(a),s=this.encodedPacketToMetadata.get(a),t(s)),g=a,k=s,h&&(Math.max(u,0)>i||Math.max(s.timestampInSamples,0)===i))break}const s=await this.demuxer.findNextPacketStart(e);if(!s)break;l=s.startPage,m=s.startSegmentIndex}return g}async getPacketSequential(e,r){const a=await this.sequentialScanMutex.acquire();try{const a=A(e*this.internalSampleRate);e=a/this.internalSampleRate;const s=S(this.sequentialScanCache,a,e=>e.timestampInSamples);let n;if(-1!==s){const e=this.sequentialScanCache[s];n=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},r)}else n=await this.getFirstPacket(r);let o=0;for(;n&&n.timestamp<e;){const a=await this.getNextPacket(n,r);if(!a||a.timestamp>e)break;if(n=a,o++,100===o){o=0;const e=this.encodedPacketToMetadata.get(n);t(e),this.sequentialScanCache.length>0&&t(i(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return n}finally{a()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const hi=(e,r,i)=>{let a=r,s=i;e:for(;;){for(s--;s>=0;s--){if(a.lacingValues[s]<255){s++;break e}}t(-1===s);if(!(1&a.headerType)){s=0;break}const r=P(e,e=>e.headerStartPos<a.headerStartPos);if(!r)return null;a=r,s=a.lacingValues.length}if(t(-1!==s),s===a.lacingValues.length){const r=e[e.indexOf(a)+1];t(r),a=r,s=0}return{page:a,segmentIndex:s}},mi=(e,t,r)=>{if(r>0)return{page:t,segmentIndex:r-1};const i=P(e,e=>e.headerStartPos<t.headerStartPos);return i?{page:i,segmentIndex:i.lacingValues.length-1}:null};
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
var fi,pi;(pi=fi||(fi={}))[pi.PCM=1]="PCM",pi[pi.IEEE_FLOAT=3]="IEEE_FLOAT",pi[pi.ALAW=6]="ALAW",pi[pi.MULAW=7]="MULAW",pi[pi.EXTENSIBLE=65534]="EXTENSIBLE";class gi extends Ke{constructor(e){super(e),this.metadataPromise=null,this.dataStart=-1,this.dataSize=-1,this.audioInfo=null,this.tracks=[],this.lastKnownPacketIndex=0,this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=this.reader.requestSlice(0,12);e instanceof Promise&&(e=await e),t(e);const r=ya(e,4),i="RIFX"!==r,a="RF64"===r,s=da(e,i);let n=a?this.reader.fileSize:Math.min(s+8,this.reader.fileSize??1/0);if("WAVE"!==ya(e,4))throw new Error("Invalid WAVE file - wrong format");let o=0,c=null,l=e.filePos;for(;null===n||l<n;){let e=this.reader.requestSlice(l,8);if(e instanceof Promise&&(e=await e),!e)break;const t=ya(e,4),r=da(e,i),s=e.filePos;if(a&&0===o&&"ds64"!==t)throw new Error('Invalid RF64 file: First chunk must be "ds64".');if("fmt "===t)await this.parseFmtChunk(s,r,i);else if("data"===t){if(c??(c=r),this.dataStart=e.filePos,this.dataSize=Math.min(c,(n??1/0)-this.dataStart),null===this.reader.fileSize)break}else if("ds64"===t){let e=this.reader.requestSlice(s,r);if(e instanceof Promise&&(e=await e),!e)break;const t=fa(e,i);c=fa(e,i),n=Math.min(t+8,this.reader.fileSize??1/0)}else"LIST"===t?await this.parseListChunk(s,r,i):"ID3 "!==t&&"id3 "!==t||await this.parseId3Chunk(s,r);l=s+r+(1&r),o++}if(!this.audioInfo)throw new Error('Invalid WAVE file - missing "fmt " chunk');if(-1===this.dataStart)throw new Error('Invalid WAVE file - missing "data" chunk');const d=this.audioInfo.blockSizeInBytes;this.dataSize=Math.floor(this.dataSize/d)*d,this.tracks.push(new Mt(this.input,new bi(this)))})())}async parseFmtChunk(e,t,r){let i=this.reader.requestSlice(e,t);if(i instanceof Promise&&(i=await i),!i)return;let a=na(i,r);const s=na(i,r),n=da(i,r);i.skip(4);const o=na(i,r);let c;if(c=14===t?8:na(i,r),t>=18&&357!==a){const e=na(i,r),s=t-18;if(Math.min(s,e)>=22&&a===fi.EXTENSIBLE){i.skip(6);const e=aa(i,16);a=e[0]|e[1]<<8}}a!==fi.MULAW&&a!==fi.ALAW||(c=8),this.audioInfo={format:a,numberOfChannels:s,sampleRate:n,sampleSizeInBytes:Math.ceil(c/8),blockSizeInBytes:o}}async parseListChunk(e,t,r){var i,a,s,n,o,c,l,d,u,h,m;let f=this.reader.requestSlice(e,t);if(f instanceof Promise&&(f=await f),!f)return;const p=ya(f,4);if("INFO"!==p&&"INF0"!==p)return;let g=f.filePos;for(;g<=e+t-8;){f.filePos=g;const e=ya(f,4),t=da(f,r),p=aa(f,t);let k=0;for(let r=0;r<p.length&&0!==p[r];r++)k++;const b=String.fromCharCode(...p.subarray(0,k));switch((i=this.metadataTags).raw??(i.raw={}),this.metadataTags.raw[e]=b,e){case"INAM":case"TITL":(a=this.metadataTags).title??(a.title=b);break;case"TIT3":(s=this.metadataTags).description??(s.description=b);break;case"IART":(n=this.metadataTags).artist??(n.artist=b);break;case"IPRD":(o=this.metadataTags).album??(o.album=b);break;case"IPRT":case"ITRK":case"TRCK":{const e=b.split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&((c=this.metadataTags).trackNumber??(c.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&((l=this.metadataTags).tracksTotal??(l.tracksTotal=r))}break;case"ICRD":case"IDIT":{const e=new Date(b);Number.isNaN(e.getTime())||((d=this.metadataTags).date??(d.date=e))}break;case"YEAR":{const e=Number.parseInt(b,10);Number.isInteger(e)&&e>0&&((u=this.metadataTags).date??(u.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":(h=this.metadataTags).genre??(h.genre=b);break;case"ICMT":case"CMNT":case"COMM":(m=this.metadataTags).comment??(m.comment=b)}g+=8+t+(1&t)}}async parseId3Chunk(e,t){let r=this.reader.requestSlice(e,t);if(r instanceof Promise&&(r=await r),!r)return;const i=Xr(r);if(i){const t=r.slice(e+10,i.size);Yr(t,i,this.metadataTags)}}getCodec(){if(t(this.audioInfo),this.audioInfo.format===fi.MULAW)return"ulaw";if(this.audioInfo.format===fi.ALAW)return"alaw";if(this.audioInfo.format===fi.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}return this.audioInfo.format===fi.IEEE_FLOAT&&4===this.audioInfo.sampleSizeInBytes?"pcm-f32":null}async getMimeType(){return"audio/wav"}async computeDuration(){await this.readMetadata();const e=this.tracks[0];return t(e),e.computeDuration()}async getTracks(){return await this.readMetadata(),this.tracks}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}const ki=2048;class bi{constructor(e){this.demuxer=e}getId(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){const e=this.demuxer.getCodec();return e?(t(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}getNumberOfChannels(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return D}getDisposition(){return{...te}}async getFirstTimestamp(){return 0}async getPacketAtIndex(e,r){t(this.demuxer.audioInfo);const i=e*ki*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const a=Math.min(ki*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,a);if(e instanceof Promise&&(e=await e),!e)return null}let s;if(r.metadataOnly)s=Ge;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,a);e instanceof Promise&&(e=await e),t(e),s=aa(e,a)}const n=e*ki/this.demuxer.audioInfo.sampleRate,o=a/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,n),new Xe(s,"key",n,o,e,a)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getPacket(e,r){t(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/ki,(this.demuxer.dataSize-1)/(ki*this.demuxer.audioInfo.blockSizeInBytes))),a=await this.getPacketAtIndex(i,r);if(a)return a;if(0===i)return null;t(null===this.demuxer.reader.fileSize);let s=await this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,r);for(;s;){const e=await this.getNextPacket(s,r);if(!e)break;s=e}return s}getNextPacket(e,r){t(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/ki);return this.getPacketAtIndex(i+1,r)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */const Ti=e=>{const t=e.filePos,r=aa(e,9),i=new a(r);if(4095!==i.readBits(12))return null;i.skipBits(1);if(0!==i.readBits(2))return null;const s=i.readBits(1),n=i.readBits(2)+1,o=i.readBits(4);if(15===o)return null;i.skipBits(1);const c=i.readBits(3);if(0===c)throw new Error("ADTS frames with channel configuration 0 are not supported.");i.skipBits(1),i.skipBits(1),i.skipBits(1),i.skipBits(1);const l=i.readBits(13);i.skipBits(11);const d=i.readBits(2)+1;if(1!==d)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===s?e.filePos-=2:u=i.readBits(16),{objectType:n,samplingFrequencyIndex:o,channelConfiguration:c,frameLength:l,numberOfAacFrames:d,crcCheck:u,startPos:t}},yi=1024;class wi extends Ke{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.tracks=[],this.readingMutex=new b,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();t(this.firstFrameHeader),this.tracks=[new Mt(this.input,new Si(this))]})())}async advanceReader(){let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(e instanceof Promise&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const r=Ti(e);if(!r)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&r.startPos+r.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=r);const i=ce[r.samplingFrequencyIndex];t(void 0!==i);const a=yi/i,s=r.crcCheck?9:7,n={timestamp:this.nextTimestampInSamples/i,duration:a,dataStart:r.startPos+s,dataSize:r.frameLength-s};this.loadedSamples.push(n),this.nextTimestampInSamples+=yi,this.lastLoadedPos=r.startPos+r.frameLength}async getMimeType(){return"audio/aac"}async getTracks(){return await this.readMetadata(),this.tracks}async computeDuration(){await this.readMetadata();const e=this.tracks[0];return t(e),e.computeDuration()}async getMetadataTags(){return{}}}class Si{constructor(e){this.demuxer=e}getId(){return 1}async getFirstTimestamp(){return 0}getTimeResolution(){return this.getSampleRate()/yi}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}getName(){return null}getLanguageCode(){return D}getCodec(){return"aac"}getInternalCodecId(){return t(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){t(this.demuxer.firstFrameHeader);const e=le[this.demuxer.firstFrameHeader.channelConfiguration];return t(void 0!==e),e}getSampleRate(){t(this.demuxer.firstFrameHeader);const e=ce[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return t(void 0!==e),e}getDisposition(){return{...te}}async getDecoderConfig(){t(this.demuxer.firstFrameHeader);const e=new Uint8Array(3),r=new a(e),{objectType:i,samplingFrequencyIndex:s,channelConfiguration:n}=this.demuxer.firstFrameHeader;return i>31?(r.writeBits(5,31),r.writeBits(6,i-32)):r.writeBits(5,i),r.writeBits(4,s),r.writeBits(4,n),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate(),description:e.subarray(0,Math.ceil((r.pos-1)/8))}}async getPacketAtIndex(e,t){if(-1===e)return null;const r=this.demuxer.loadedSamples[e];if(!r)return null;let i;if(t.metadataOnly)i=Ge;else{let e=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(e instanceof Promise&&(e=await e),!e)return null;i=aa(e,r.dataSize)}return new Xe(i,"key",r.timestamp,r.duration,e,r.dataSize)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getNextPacket(e,t){const r=await this.demuxer.readingMutex.acquire();try{const r=w(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===r)throw new Error("Packet was not created from this track.");const i=r+1;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{r()}}async getPacket(e,t){const r=await this.demuxer.readingMutex.acquire();try{for(;;){const r=S(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===r&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(r,t);if(r>=0&&r+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(r,t);await this.demuxer.advanceReader()}}finally{r()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
class Ii extends Ke{constructor(e){super(e),this.loadedSamples=[],this.metadataPromise=null,this.track=null,this.metadataTags={},this.audioInfo=null,this.lastLoadedPos=null,this.blockingBit=null,this.readingMutex=new b,this.lastSampleLoaded=!1,this.reader=e._reader}async computeDuration(){return await this.readMetadata(),t(this.track),this.track.computeDuration()}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}async getTracks(){return await this.readMetadata(),t(this.track),[this.track]}async getMimeType(){return"audio/flac"}async readMetadata(){let e=4;return this.metadataPromise??(this.metadataPromise=(async()=>{for(var r;null===this.reader.fileSize||e<this.reader.fileSize;){let i=this.reader.requestSlice(e,4);if(i instanceof Promise&&(i=await i),e+=4,null===i)throw new Error(`Metadata block at position ${e} is too small! Corrupted file.`);t(i);const s=sa(i),n=ca(i),o=0!==(128&s);switch(127&s){case He.STREAMINFO:{let r=this.reader.requestSlice(e,n);if(r instanceof Promise&&(r=await r),t(r),null===r)throw new Error(`StreamInfo block at position ${e} is too small! Corrupted file.`);const i=aa(r,34),s=new a(i),o=s.readBits(16),c=s.readBits(16),l=s.readBits(24),d=s.readBits(24),u=s.readBits(20),h=s.readBits(3)+1;s.readBits(5);const m=s.readBits(36);s.skipBits(128);const f=new Uint8Array(42);f.set(new Uint8Array([102,76,97,67]),0),f.set(new Uint8Array([128,0,0,34]),4),f.set(i,8),this.audioInfo={numberOfChannels:h,sampleRate:u,totalSamples:m,minimumBlockSize:o,maximumBlockSize:c,minimumFrameSize:l,maximumFrameSize:d,description:f},this.track=new Mt(this.input,new vi(this));break}case He.VORBIS_COMMENT:{let r=this.reader.requestSlice(e,n);r instanceof Promise&&(r=await r),t(r),je(aa(r,n),this.metadataTags);break}case He.PICTURE:{let i=this.reader.requestSlice(e,n);i instanceof Promise&&(i=await i),t(i);const a=ua(i),s=ua(i),o=l.decode(aa(i,s)),c=ua(i),d=l.decode(aa(i,c));i.skip(16);const u=ua(i),h=aa(i,u);(r=this.metadataTags).images??(r.images=[]),this.metadataTags.images.push({data:h,mimeType:o,kind:3===a?"coverFront":4===a?"coverBack":"unknown",description:d});break}}if(e+=n,o){this.lastLoadedPos=e;break}}})())}async readNextFlacFrame({startPos:e,isFirstPacket:r}){t(this.audioInfo);const i=this.audioInfo.maximumFrameSize+16,a=await this.reader.requestSliceRange(e,this.audioInfo.minimumFrameSize,i);if(!a)return null;const s=this.readFlacFrameHeader({slice:a,isFirstPacket:r});if(!s)return null;for(a.filePos=e+this.audioInfo.minimumFrameSize;;){if(a.filePos>a.end-6)return{num:s.num,blockSize:s.blockSize,sampleRate:s.sampleRate,size:a.end-e,isLastFrame:!0};if(255===sa(a)){const t=a.filePos;if(sa(a)!==(1===this.blockingBit?249:248)){a.filePos=t;continue}a.skip(-2);const r=a.filePos-e,i=this.readFlacFrameHeader({slice:a,isFirstPacket:!1});if(!i){a.filePos=t;continue}if(0===this.blockingBit){if(i.num-s.num!==1){a.filePos=t;continue}}else if(i.num-s.num!==s.blockSize){a.filePos=t;continue}return{num:s.num,blockSize:s.blockSize,sampleRate:s.sampleRate,size:r,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:r}){const i=e.filePos,s=aa(e,4),n=new a(s);if(32764!==n.readBits(15))return null;if(null===this.blockingBit){t(r);const e=n.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){t(!r);if(1!==n.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");t(!r);if(0!==n.readBits(1))return null}const o=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*2**e:6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?2**e:null)(n.readBits(4));if(!o)return null;t(this.audioInfo);const c=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(n.readBits(4),this.audioInfo.sampleRate);if(!c)return null;n.readBits(4),n.readBits(3);if(0!==n.readBits(1))return null;const l=(e=>{let t=0;const r=new a(aa(e,1));for(;1===r.readBits(1);)t++;if(0===t)return r.readBits(7);const i=[],s=t-1,n=new a(aa(e,s)),o=8-t-1;for(let a=0;a<o;a++)i.unshift(r.readBits(1));for(let a=0;a<s;a++)for(let e=0;e<8;e++){const t=n.readBits(1);e<2||i.unshift(t)}return i.reduce((e,t,r)=>e|t<<r,0)})(e),d=((e,r)=>"uncommon-u16"===r?oa(e)+1:"uncommon-u8"===r?sa(e)+1:"number"===typeof r?r:(C(r),void t(!1)))(e,o),u=((e,t)=>"uncommon-u16"===t?oa(e):"uncommon-u16-10"===t?10*oa(e):"uncommon-u8"===t?sa(e):"number"===typeof t?t:null)(e,c);if(null===u)return null;if(u!==this.audioInfo.sampleRate)return null;const h=e.filePos-i,m=sa(e);e.skip(-h),e.skip(-1);const f=(e=>{let t=0;for(const r of e){t^=r;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(aa(e,h));return m!==f?null:{num:l,blockSize:d,sampleRate:u}}async advanceReader(){await this.readMetadata(),t(null!==this.lastLoadedPos),t(this.audioInfo);const e=this.lastLoadedPos,r=await this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!r)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],a={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:r.blockSize,byteOffset:e,byteSize:r.size};this.lastLoadedPos=this.lastLoadedPos+r.size,this.loadedSamples.push(a),r.isLastFrame&&(this.lastSampleLoaded=!0)}}class vi{constructor(e){this.demuxer=e}getId(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}async computeDuration(){const e=await this.getPacket(1/0,{metadataOnly:!0});return(e?.timestamp??0)+(e?.duration??0)}getSampleRate(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return D}getTimeResolution(){return t(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getDisposition(){return{...te}}async getFirstTimestamp(){return 0}async getDecoderConfig(){return t(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}}async getPacket(e,r){if(t(this.demuxer.audioInfo),e<0)throw new Error("Timestamp cannot be negative");const i=await this.demuxer.readingMutex.acquire();try{for(;;){const t=S(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===t){await this.demuxer.advanceReader();continue}const i=this.demuxer.loadedSamples[t],a=i.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(a+i.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(t,r);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,r);await this.demuxer.advanceReader()}}finally{i()}}async getNextPacket(e,t){const r=await this.demuxer.readingMutex.acquire();try{const r=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&r>=this.demuxer.loadedSamples.length)return null;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{r()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}async getPacketAtIndex(e,r){const i=this.demuxer.loadedSamples[e];if(!i)return null;let a;if(r.metadataOnly)a=Ge;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(e instanceof Promise&&(e=await e),!e)return null;a=aa(e,i.byteSize)}t(this.demuxer.audioInfo);const s=i.blockOffset/this.demuxer.audioInfo.sampleRate,n=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Xe(a,"key",s,n,e,i.byteSize)}async getFirstPacket(e){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */class Pi{}class xi extends Pi{async _getMajorBrand(e){let t=e._reader.requestSlice(0,12);if(t instanceof Promise&&(t=await t),!t)return null;t.skip(4);return"ftyp"!==ya(t,4)?null:ya(t,4)}_createDemuxer(e){return new qt(e)}}class Ci extends xi{async _canReadInput(e){const t=await this._getMajorBrand(e);return!!t&&"qt  "!==t}get name(){return"MP4"}get mimeType(){return"video/mp4"}}class _i extends xi{async _canReadInput(e){return"qt  "===await this._getMajorBrand(e)}get name(){return"QuickTime File Format"}get mimeType(){return"video/quicktime"}}class Bi extends Pi{async isSupportedEBMLOfDocType(e,t){let r=e._reader.requestSlice(0,ar);if(r instanceof Promise&&(r=await r),!r)return!1;const i=sr(r);if(null===i)return!1;if(i<1||i>8)return!1;if(or(r,i)!==Zt.EBML)return!1;const a=lr(r);if("number"!==typeof a)return!1;let s=e._reader.requestSlice(r.filePos,a);if(s instanceof Promise&&(s=await s),!s)return!1;const n=r.filePos;for(;s.filePos<=n+a-2;){const e=dr(s);if(!e)break;const{id:r,size:i}=e,a=s.filePos;if(void 0===i)return!1;switch(r){case Zt.EBMLVersion:if(1!==or(s,i))return!1;break;case Zt.EBMLReadVersion:if(1!==or(s,i))return!1;break;case Zt.DocType:if(ur(s,i)!==t)return!1;break;case Zt.DocTypeVersion:if(or(s,i)>4)return!1}s.filePos=a+i}return!0}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new Mr(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class Ei extends Bi{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class Fi extends Pi{async _canReadInput(e){let t=e._reader.requestSlice(0,10);if(t instanceof Promise&&(t=await t),!t)return!1;let r=0,i=!1;for(;;){let t=e._reader.requestSlice(r,10);if(t instanceof Promise&&(t=await t),!t)break;const a=Xr(t);if(!a)break;i=!0,r=t.filePos+a.size}const a=await Zr(e._reader,r,r+4096);if(!a)return!1;if(i)return!0;r=a.startPos+a.header.totalSize;const s=await Zr(e._reader,r,r+4);if(!s)return!1;const n=a.header,o=s.header;return n.channel===o.channel&&n.sampleRate===o.sampleRate}_createDemuxer(e){return new ei(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class Di extends Pi{async _canReadInput(e){let t=e._reader.requestSlice(0,12);if(t instanceof Promise&&(t=await t),!t)return!1;const r=ya(t,4);if("RIFF"!==r&&"RIFX"!==r&&"RF64"!==r)return!1;t.skip(4);return"WAVE"===ya(t,4)}_createDemuxer(e){return new gi(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class Ai extends Pi{async _canReadInput(e){let t=e._reader.requestSlice(0,4);return t instanceof Promise&&(t=await t),!!t&&"OggS"===ya(t,4)}_createDemuxer(e){return new di(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class Ri extends Pi{async _canReadInput(e){let t=e._reader.requestSlice(0,4);return t instanceof Promise&&(t=await t),!!t&&"fLaC"===ya(t,4)}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new Ii(e)}}class Mi extends Pi{async _canReadInput(e){let t=e._reader.requestSliceRange(0,7,9);if(t instanceof Promise&&(t=await t),!t)return!1;const r=Ti(t);if(!r)return!1;if(t=e._reader.requestSliceRange(r.frameLength,7,9),t instanceof Promise&&(t=await t),!t)return!1;const i=Ti(t);return!!i&&(r.objectType===i.objectType&&r.samplingFrequencyIndex===i.samplingFrequencyIndex&&r.channelConfiguration===i.channelConfiguration)}_createDemuxer(e){return new wi(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}const Ni=new Ci,zi=new _i,Oi=new Bi,Li=new Ei,Ui=new Fi,Vi=new Di,qi=new Ai,Hi=new Mi,Wi=[Ni,zi,Oi,Li,Vi,qi,new Ri,Ui,Hi];
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */
class ji{constructor(){this._disposed=!1,this._sizePromise=null,this.onread=null}async getSizeOrNull(){if(this._disposed)throw new ea;return this._sizePromise??(this._sizePromise=Promise.resolve(this._retrieveSize()))}async getSize(){if(this._disposed)throw new ea;const e=await this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e}}class Ki extends ji{constructor(e,t={}){if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!J(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");super(),this._readers=new WeakMap,this._blob=e,this._orchestrator=new Ji({maxCacheSize:t.maxCacheSize??8388608,maxWorkerCount:4,runWorker:this._runWorker.bind(this),prefetchProfile:Yi.fileSystem})}_retrieveSize(){const e=this._blob.size;return this._orchestrator.fileSize=e,e}_read(e,t){return this._orchestrator.read(e,t)}async _runWorker(e){let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!q()){t=this._blob.slice(e.currentPos).stream().getReader()}else t=null;this._readers.set(e,t)}for(;e.currentPos<e.targetPos&&!e.aborted;)if(t){const{done:r,value:i}=await t.read();if(r)throw this._orchestrator.forgetWorker(e),new Error("Blob reader stopped unexpectedly before all requested data was read.");if(e.aborted)break;this.onread?.(e.currentPos,e.currentPos+i.length),this._orchestrator.supplyWorkerData(e,i)}else{const t=await this._blob.slice(e.currentPos,e.targetPos).arrayBuffer();if(e.aborted)break;this.onread?.(e.currentPos,e.currentPos+t.byteLength),this._orchestrator.supplyWorkerData(e,new Uint8Array(t))}e.running=!1,e.aborted&&await(t?.cancel())}_dispose(){this._orchestrator.dispose()}}const $i=524288,Qi=(e,t,r)=>{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(r instanceof Request?r.url:r,window.location.href).origin)}catch{}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return console.warn("Request will not be retried because a CORS error was suspected due to different origins. You can modify this behavior by providing your own function for the 'getRetryDelay' option."),null}return Math.min(2**(e-2),16)};class Gi extends ji{constructor(e,t={}){if("string"!==typeof e&&!(e instanceof URL)&&!("undefined"!==typeof Request&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.requestInit&&(!t.requestInit||"object"!==typeof t.requestInit))throw new TypeError("options.requestInit, when provided, must be an object.");if(void 0!==t.getRetryDelay&&"function"!==typeof t.getRetryDelay)throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(void 0!==t.maxCacheSize&&(!J(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");super(),this._existingResponses=new WeakMap,this._url=e,this._options=t,this._getRetryDelay=t.getRetryDelay??Qi,this._orchestrator=new Ji({maxCacheSize:t.maxCacheSize??67108864,maxWorkerCount:2,runWorker:this._runWorker.bind(this),prefetchProfile:Yi.network})}async _retrieveSize(){const e=new AbortController,t=await L(this._options.fetchFn??fetch,this._url,z(this._options.requestInit??{},{headers:{Range:"bytes=0-"},signal:e.signal}),this._getRetryDelay,()=>this._disposed);if(!t.ok)throw new Error(`Error fetching ${String(this._url)}: ${t.status} ${t.statusText}`);let r,i;if(206===t.status)i=this._getTotalLengthFromRangeResponse(t),r=this._orchestrator.createWorker(0,Math.min(i,$i));else{const e=t.headers.get("Content-Length");if(!e)throw new Error(`HTTP response (status ${t.status}) must surface Content-Length header.`);i=Number(e),r=this._orchestrator.createWorker(0,i),this._orchestrator.options.maxCacheSize=1/0,console.warn("HTTP server did not respond with 206 Partial Content, meaning the entire remote resource now has to be downloaded. For efficient media file streaming across a network, please make sure your server supports range requests.")}return this._orchestrator.fileSize=i,this._existingResponses.set(r,{response:t,abortController:e}),this._orchestrator.runWorker(r),i}_read(e,t){return this._orchestrator.read(e,t)}async _runWorker(e){for(;;){const i=this._existingResponses.get(e);this._existingResponses.delete(e);let a=i?.abortController,s=i?.response;if(a||(a=new AbortController,s=await L(this._options.fetchFn??fetch,this._url,z(this._options.requestInit??{},{headers:{Range:`bytes=${e.currentPos}-`},signal:a.signal}),this._getRetryDelay,()=>this._disposed)),t(s),!s.ok)throw new Error(`Error fetching ${String(this._url)}: ${s.status} ${s.statusText}`);if(e.currentPos>0&&206!==s.status)throw new Error("HTTP server did not respond with 206 Partial Content to a range request. To enable efficient media file streaming across a network, please make sure your server supports range requests.");if(!s.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");const n=s.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return a.abort(),void(e.running=!1);let t;try{t=await n.read()}catch(r){if(this._disposed)throw r;const e=this._getRetryDelay(1,r,this._url);if(null!==e){console.error("Error while reading response stream. Attempting to resume.",r),await new Promise(t=>setTimeout(t,1e3*e));break}throw r}if(e.aborted)continue;const{done:i,value:s}=t;if(i){if(e.currentPos>=e.targetPos)return this._orchestrator.forgetWorker(e),void(e.running=!1);break}this.onread?.(e.currentPos,e.currentPos+s.length),this._orchestrator.supplyWorkerData(e,s)}}}_getTotalLengthFromRangeResponse(e){const t=e.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e)return Number(e[1])}const r=e.headers.get("Content-Length");if(r)return Number(r);throw new Error("Partial HTTP response (status 206) must surface either Content-Range or Content-Length header.")}_dispose(){this._orchestrator.dispose()}}class Xi extends ji{constructor(e,t={}){if(!(e instanceof ReadableStream))throw new TypeError("stream must be a ReadableStream.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!J(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");super(),this._reader=null,this._cache=[],this._pendingSlices=[],this._currentIndex=0,this._targetIndex=0,this._maxRequestedIndex=0,this._endIndex=null,this._pulling=!1,this._stream=e,this._maxCacheSize=t.maxCacheSize??16777216}_retrieveSize(){return this._endIndex}_read(e,t){if(null!==this._endIndex&&t>this._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const r=S(this._cache,e,e=>e.start),i=-1!==r?this._cache[r]:null;if(i&&i.start<=e&&t<=i.end)return{bytes:i.bytes,view:i.view,offset:i.start};let a=e;const s=new Uint8Array(t-e);if(-1!==r)for(let c=r;c<this._cache.length;c++){const r=this._cache[c];if(r.start>=t)break;const i=Math.max(e,r.start);i>a&&this._throwDueToCacheMiss();const n=Math.min(t,r.end);i<n&&(s.set(r.bytes.subarray(i-r.start,n-r.start),i-e),a=n)}if(a===t)return{bytes:s,view:c(s),offset:e};this._currentIndex>a&&this._throwDueToCacheMiss();const{promise:n,resolve:o,reject:l}=v();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:l}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,!(this._pendingSlices.length>0))throw e;this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0})),n}_throwDueToCacheMiss(){throw new Error("Read is before the cached region. With ReadableStreamSource, you must access the data more sequentially or increase the size of its cache.")}async _pull(){for(this._reader??(this._reader=this._stream.getReader());this._currentIndex<this._targetIndex&&!this._disposed;){const{done:e,value:t}=await this._reader.read();if(e){for(const e of this._pendingSlices)e.resolve(null);this._pendingSlices.length=0,this._endIndex=this._currentIndex;break}const r=this._currentIndex,i=this._currentIndex+t.byteLength;for(let a=0;a<this._pendingSlices.length;a++){const e=this._pendingSlices[a],s=Math.max(r,e.start),n=Math.min(i,e.end);s<n&&(e.bytes.set(t.subarray(s-r,n-r),s-e.start),n===e.end&&(e.resolve({bytes:e.bytes,view:c(e.bytes),offset:e.start}),this._pendingSlices.splice(a,1),a--))}for(this._cache.push({start:r,end:i,bytes:t,view:c(t),age:0});this._cache.length>0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1}_dispose(){this._pendingSlices.length=0,this._cache.length=0}}const Yi={fileSystem:(e,t)=>{const r=65536;return{start:e=Math.floor((e-r)/r)*r,end:t=Math.ceil((t+r)/r)*r}},network:(e,t,r)=>{const i=65536;e=Math.max(0,Math.floor((e-i)/i)*i);for(const a of r){const r=8388608,i=Math.max((a.startPos+a.targetPos)/2,a.targetPos-r);if(G(e,t,i,a.targetPos)){const e=a.targetPos-a.startPos,i=Math.ceil((e+1)/r)*r,s=2**Math.ceil(Math.log2(e+1)),n=Math.min(s,i);t=Math.max(t,a.startPos+n)}}return{start:e,end:t=Math.max(t,e+$i)}}};class Ji{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1}read(e,r){t(null!==this.fileSize);const i=this.options.prefetchProfile(e,r,this.workers),a=Math.max(i.start,0),s=Math.min(i.end,this.fileSize);t(a<=e&&r<=s);let n=null;const o=S(this.cache,e,e=>e.start),l=-1!==o?this.cache[o]:null;l&&l.start<=e&&r<=l.end&&(l.age=this.nextAge++,n={bytes:l.bytes,view:l.view,offset:l.start});const d=S(this.cache,a,e=>e.start),u=n?null:new Uint8Array(r-e);let h=0,m=a;const f=[];if(-1!==d){for(let i=d;i<this.cache.length;i++){const n=this.cache[i];if(n.start>=s)break;if(n.end<=a)continue;const o=Math.max(a,n.start),c=Math.min(s,n.end);if(t(o<=c),m<o&&f.push({start:m,end:o}),m=c,u){const t=Math.max(e,n.start),i=Math.min(r,n.end);if(t<i){const r=t-e;u.set(n.bytes.subarray(t-n.start,i-n.start),r),r===h&&(h=i-e)}}n.age=this.nextAge++}m<s&&f.push({start:m,end:s})}else f.push({start:a,end:s});if(u&&h>=u.length&&(n={bytes:u,view:c(u),offset:e}),0===f.length)return t(n),n;const{promise:p,resolve:g,reject:k}=v(),b=[];for(const t of f){const i=Math.max(e,t.start),a=Math.min(r,t.end);i===t.start&&a===t.end?b.push(t):i<a&&b.push({start:i,end:a})}for(const t of f){const r=u&&{start:e,bytes:u,holes:b,resolve:g,reject:k};let i=!1;for(const e of this.workers){const a=2**17;if(G(t.start-a,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end),i=!0,r&&!e.pendingSlices.includes(r)&&e.pendingSlices.push(r),e.running||this.runWorker(e);break}}if(!i){const e=this.createWorker(t.start,t.end);r&&(e.pendingSlices=[r]),this.runWorker(e)}}return n||(t(u),n=p.then(t=>({bytes:t,view:c(t),offset:e}))),n}createWorker(e,t){const r={startPos:e,currentPos:e,targetPos:t,running:!1,aborted:this.disposed,pendingSlices:[],age:this.nextAge++};for(this.workers.push(r);this.workers.length>this.options.maxWorkerCount;){let e=0,t=this.workers[0];for(let r=1;r<this.workers.length;r++){const i=this.workers[r];i.age<t.age&&(e=r,t=i)}if(t.running&&t.pendingSlices.length>0)break;t.aborted=!0,this.workers.splice(e,1)}return r}runWorker(e){t(!e.running),t(e.currentPos<e.targetPos),e.running=!0,e.age=this.nextAge++,this.options.runWorker(e).catch(t=>{if(e.running=!1,!(e.pendingSlices.length>0))throw t;e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0})}supplyWorkerData(e,r){t(!e.aborted);const i=e.currentPos,a=i+r.length;this.insertIntoCache({start:i,end:a,bytes:r,view:c(r),age:this.nextAge++}),e.currentPos+=r.length,e.targetPos=Math.max(e.targetPos,e.currentPos);for(let t=0;t<e.pendingSlices.length;t++){const s=e.pendingSlices[t],n=Math.max(i,s.start),o=Math.min(a,s.start+s.bytes.length);n<o&&s.bytes.set(r.subarray(n-i,o-i),n-s.start);for(let e=0;e<s.holes.length;e++){const t=s.holes[e];i<=t.start&&a>t.start&&(t.start=a),t.end<=t.start&&(s.holes.splice(e,1),e--)}0===s.holes.length&&(s.resolve(s.bytes),e.pendingSlices.splice(t,1),t--)}for(let t=0;t<this.workers.length;t++){const r=this.workers[t];e===r||r.running||G(i,a,r.currentPos,r.targetPos)&&(this.workers.splice(t,1),t--)}}forgetWorker(e){const r=this.workers.indexOf(e);t(-1!==r),this.workers.splice(r,1)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=S(this.cache,e.start,e=>e.start)+1;if(t>0){const r=this.cache[t-1];if(r.end>=e.end)return;if(r.end>e.start){const i=new Uint8Array(e.end-r.start);i.set(r.bytes,0),i.set(e.bytes,e.start-r.start),this.currentCacheSize+=e.end-r.end,r.bytes=i,r.view=c(i),r.end=e.end,t--,e=r}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let r=t+1;r<this.cache.length;r++){const t=this.cache[r];if(e.end<=t.start)break;if(e.end>=t.end){this.cache.splice(r,1),this.currentCacheSize-=t.bytes.length,r--;continue}const i=new Uint8Array(t.end-e.start);i.set(e.bytes,0),i.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=i,e.view=c(i),e.end=t.end,this.cache.splice(r,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let r=1;r<this.cache.length;r++){const i=this.cache[r];i.age<t.age&&(e=r,t=i)}if(this.currentCacheSize-t.bytes.length<=this.options.maxCacheSize)break;this.cache.splice(e,1),this.currentCacheSize-=t.bytes.length}}dispose(){for(const e of this.workers)e.aborted=!0;this.workers.length=0,this.cache.length=0,this.disposed=!0}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */Y();class Zi{get disposed(){return this._disposed}constructor(e){if(this._demuxerPromise=null,this._format=null,this._disposed=!1,!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(!Array.isArray(e.formats)||e.formats.some(e=>!(e instanceof Pi)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof ji))throw new TypeError("options.source must be a Source.");if(e.source._disposed)throw new Error("options.source must not be disposed.");this._formats=e.formats,this._source=e.source,this._reader=new ta(e.source)}_getDemuxer(){return this._demuxerPromise??(this._demuxerPromise=(async()=>{this._reader.fileSize=await this._source.getSizeOrNull();for(const e of this._formats){if(await e._canReadInput(this))return this._format=e,e._createDemuxer(this)}throw new Error("Input has an unsupported or unrecognizable format.")})())}get source(){return this._source}async getFormat(){return await this._getDemuxer(),t(this._format),this._format}async computeDuration(){return(await this._getDemuxer()).computeDuration()}async getTracks(){return(await this._getDemuxer()).getTracks()}async getVideoTracks(){return(await this.getTracks()).filter(e=>e.isVideoTrack())}async getAudioTracks(){return(await this.getTracks()).filter(e=>e.isAudioTrack())}async getPrimaryVideoTrack(){return(await this.getTracks()).find(e=>e.isVideoTrack())??null}async getPrimaryAudioTrack(){return(await this.getTracks()).find(e=>e.isAudioTrack())??null}async getMimeType(){return(await this._getDemuxer()).getMimeType()}async getMetadataTags(){return(await this._getDemuxer()).getMetadataTags()}dispose(){this._disposed||(this._disposed=!0,this._source._disposed=!0,this._source._dispose())}[Symbol.dispose](){this.dispose()}}class ea extends Error{constructor(e="Input has been disposed."){super(e),this.name="InputDisposedError"}}
/*!
   * Copyright (c) 2025-present, Vanilagy and contributors
   *
   * This Source Code Form is subject to the terms of the Mozilla Public
   * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at https://mozilla.org/MPL/2.0/.
   */class ta{constructor(e){this.source=e}requestSlice(e,t){if(this.source._disposed)throw new ea;if(null!==this.fileSize&&e+t>this.fileSize)return null;const r=e+t,i=this.source._read(e,r);return i instanceof Promise?i.then(t=>t?new ra(t.bytes,t.view,t.offset,e,r):null):i?new ra(i.bytes,i.view,i.offset,e,r):null}requestSliceRange(e,r,i){if(this.source._disposed)throw new ea;if(null!==this.fileSize)return this.requestSlice(e,F(this.fileSize-e,r,i));{const a=this.requestSlice(e,i),s=a=>{if(a)return a;const s=a=>(t(null!==a),this.requestSlice(e,F(a-e,r,i))),n=this.source._retrieveSize();return n instanceof Promise?n.then(s):s(n)};return a instanceof Promise?a.then(s):s(a)}}}class ra{constructor(e,t,r,i,a){this.bytes=e,this.view=t,this.offset=r,this.start=i,this.end=a,this.bufferPos=i-r}static tempFromBytes(e){return new ra(e,c(e),0,0,e.length)}get length(){return this.end-this.start}get filePos(){return this.offset+this.bufferPos}set filePos(e){this.bufferPos=e-this.offset}get remainingLength(){return Math.max(this.end-this.filePos,0)}skip(e){this.bufferPos+=e}slice(e,t=this.end-e){if(e<this.start||e+t>this.end)throw new RangeError("Slicing outside of original slice.");return new ra(this.bytes,this.view,this.offset,e,e+t)}}const ia=(e,t)=>{if(e.filePos<e.start||e.filePos+t>e.end)throw new RangeError(`Tried reading [${e.filePos}, ${e.filePos+t}), but slice is [${e.start}, ${e.end}). This is likely an internal error, please report it alongside the file that caused it.`)},aa=(e,t)=>{ia(e,t);const r=e.bytes.subarray(e.bufferPos,e.bufferPos+t);return e.bufferPos+=t,r},sa=e=>(ia(e,1),e.view.getUint8(e.bufferPos++)),na=(e,t)=>{ia(e,2);const r=e.view.getUint16(e.bufferPos,t);return e.bufferPos+=2,r},oa=e=>{ia(e,2);const t=e.view.getUint16(e.bufferPos,!1);return e.bufferPos+=2,t},ca=e=>{ia(e,3);const t=_(e.view,e.bufferPos,!1);return e.bufferPos+=3,t},la=e=>{ia(e,2);const t=e.view.getInt16(e.bufferPos,!1);return e.bufferPos+=2,t},da=(e,t)=>{ia(e,4);const r=e.view.getUint32(e.bufferPos,t);return e.bufferPos+=4,r},ua=e=>{ia(e,4);const t=e.view.getUint32(e.bufferPos,!1);return e.bufferPos+=4,t},ha=e=>{ia(e,4);const t=e.view.getUint32(e.bufferPos,!0);return e.bufferPos+=4,t},ma=e=>{ia(e,4);const t=e.view.getInt32(e.bufferPos,!1);return e.bufferPos+=4,t},fa=(e,t)=>{let r,i;return t?(r=da(e,!0),i=da(e,!0)):(i=da(e,!1),r=da(e,!1)),4294967296*i+r},pa=e=>4294967296*ua(e)+ua(e),ga=e=>4294967296*ma(e)+ua(e),ka=e=>{const t=ha(e),r=(e=>{ia(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*r+t},ba=e=>{ia(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},Ta=e=>{ia(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},ya=(e,t)=>{ia(e,t);let r="";for(let i=0;i<t;i++)r+=String.fromCharCode(e.bytes[e.bufferPos++]);return r};class wa{constructor(e){this.events=e,this.input=null,this.audioSink=null,this.audioIterator=null,this.audioContext=null,this.gainNode=null,this.audioContextStartTime=0,this.playbackTimeAtStart=0,this.latestScheduledEndTime=0,this.duration=Number.NaN,this.paused=!0,this.volume=.7,this.muted=!1,this.playbackRate=1,this.asyncId=0,this.queuedNodes=new Set}get currentTime(){return this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}normalizeSource(e){return"string"===typeof e?new Gi(e):e instanceof Blob?new Ki(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new Xi(e):e}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch{this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}async stopIterator(){await(this.audioIterator?.return()),this.audioIterator=null}async load(e,t){const r=++this.asyncId;await this.stopIterator(),this.stopQueuedNodes(),this.paused=!0,this.playbackTimeAtStart=0,this.audioContextStartTime=0;const i=this.normalizeSource(e);if(!i)return;if(this.input=new Zi({source:i,formats:Wi}),this.duration=await this.input.computeDuration(),r!==this.asyncId)return;const a=await this.input.getPrimaryAudioTrack();return a&&null!==a.codec&&await a.canDecode()?(this.ensureAudioContext(a.sampleRate),this.audioSink=new Dt(a),void t?.()):(this.audioSink=null,this.ensureAudioContext(),void t?.())}async runIterator(e){if(this.audioSink)for(await this.stopIterator(),this.audioIterator=this.audioSink.buffers(this.currentTime);;){if(e!==this.asyncId||this.paused)return;const r=this.audioIterator.next(),i=setInterval(()=>{e!==this.asyncId||this.paused?clearInterval(i):"running"===this.audioContext.state&&this.audioContext.currentTime>=this.latestScheduledEndTime-.2&&(this.audioContext.suspend(),this.events.emit("waiting"))},50);let a;try{a=await r}catch(t){console.error("Audio iterator error:",t);break}finally{clearInterval(i)}if(e!==this.asyncId||this.paused)return;if("suspended"===this.audioContext.state&&(await this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing")),a.done)break;const{buffer:s,timestamp:n}=a.value,o=this.audioContext.createBufferSource();o.buffer=s,o.connect(this.gainNode),o.playbackRate.value=this.playbackRate;const c=this.audioContextStartTime+(n-this.playbackTimeAtStart)/this.playbackRate,l=c+s.duration/this.playbackRate;l>this.latestScheduledEndTime&&(this.latestScheduledEndTime=l),c>=this.audioContext.currentTime?o.start(c):o.start(this.audioContext.currentTime,(this.audioContext.currentTime-c)*this.playbackRate),this.queuedNodes.add(o),o.onended=()=>this.queuedNodes.delete(o)}}async play(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&await this.audioContext.resume(),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.audioContextStartTime,this.paused=!1;const e=++this.asyncId;this.runIterator(e)}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}async seek(e){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.audioContextStartTime;const t=++this.asyncId;this.paused||this.runIterator(t)}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){this.asyncId++,this.pause(),this.audioContext?.close(),this.audioContext=null,this.input=null,this.audioSink=null}}class Sa{constructor({canvas:e,ctx:t,events:r,timeupdateInterval:i=250,avSyncTolerance:a=.12,dropLateFrames:s=!1,poster:n="",preflightRange:o=!1}){this.canvas=e,this.ctx=t,this.events=r,this.timeupdateInterval=i,this.avSyncTolerance=a,this.dropLateFrames=s,this.poster=n,this.preflightRange=o,this.input=null,this.videoSink=null,this.videoIterator=null,this.nextFrame=null,this.rafId=0,this.asyncId=0,this.width=0,this.height=0,this.duration=Number.NaN,this.audioClock=null,this.lastTimeUpdate=0,this.stalled=!1,this.playbackRate=1,this.posterDrawn=!1,this.isFetching=!1}normalizeSource(e){return"string"===typeof e?new Gi(e):e instanceof Blob?new Ki(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new Xi(e):e}async preflight(e){if(!this.preflightRange||"string"!==typeof e)return!0;try{const t=(await fetch(e,{method:"HEAD"})).headers.get("accept-ranges");return!(!t||"none"===t)||(this.events.emit("error",new Event("RangeNotSupported")),!1)}catch(t){return console.warn("Preflight check failed:",t),!0}}drawPoster(){if(!this.poster||this.posterDrawn)return;const e=new Image;e.onload=()=>{this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,this.ctx.drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e.src=this.poster}async stopIterator(){await(this.videoIterator?.return()),this.videoIterator=null}clear(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}async load(e,t){const r=++this.asyncId;if(await this.stopIterator(),this.clear(),this.posterDrawn=!1,!(await this.preflight(e)))return;const i=this.normalizeSource(e);if(!i)return void this.drawPoster();if(this.input=new Zi({source:i,formats:Wi}),this.duration=await this.input.computeDuration(),r!==this.asyncId)return;const a=await this.input.getPrimaryVideoTrack();if(!a)return this.handleNoVideoTrack(),void t?.();if(null===a.codec||!(await a.canDecode()))return this.handleNoVideoTrack(),void t?.();const s=await a.canBeTransparent();this.videoSink=new _t(a,{poolSize:2,fit:"contain",alpha:s}),this.width=a.displayWidth,this.height=a.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,t?.(),await this.resetIterator(0)}handleNoVideoTrack(){this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster()}async resetIterator(e){if(await this.stopIterator(),!this.videoSink)return;this.videoIterator=this.videoSink.canvases(e);const t=(await this.videoIterator.next()).value??null,r=(await this.videoIterator.next()).value??null;this.nextFrame=r,t?(this.ctx.drawImage(t.canvas,0,0),this.events.emit("loadeddata")):this.drawPoster()}async updateNextFrame(e){if(this.videoIterator&&!this.isFetching){this.isFetching=!0;try{for(;;){const t=(await this.videoIterator.next()).value??null;if(!t||e!==this.asyncId)return;const r=this.audioClock.currentTime,i=this.dropLateFrames?Math.max(.06,this.avSyncTolerance/Math.max(1,this.playbackRate)):0;if(!(this.dropLateFrames&&t.timestamp<r-i)){if(!(t.timestamp<=r+i))return void(this.nextFrame=t);if(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(t.canvas,0,0),!this.dropLateFrames&&t.timestamp>r)return void(this.nextFrame=null)}}}finally{this.isFetching=!1}}}render(){if(!this.audioClock)return;const e=this.audioClock.currentTime,t=Date.now();if(t-this.lastTimeUpdate>=this.timeupdateInterval&&(this.events.emit("timeupdate"),this.lastTimeUpdate=t),Number.isFinite(this.duration)&&e>=this.duration)return this.stop(),this.stalled=!1,this.events.emit("ended"),this.events.emit("pause"),void this.events.emit("canplay");this.nextFrame&&this.nextFrame.timestamp<=e?(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(this.nextFrame.canvas,0,0),this.nextFrame=null,this.updateNextFrame(this.asyncId),this.stalled&&(this.events.emit("canplay"),this.events.emit("playing"),this.stalled=!1)):this.nextFrame||(this.updateNextFrame(this.asyncId),!this.nextFrame&&Number.isFinite(this.duration)&&e<this.duration&&!this.stalled&&(this.stalled=!0,this.events.emit("waiting"))),this.rafId=requestAnimationFrame(()=>this.render())}start(e){this.audioClock=e,this.asyncId++,this.stalled=!1,this.updateNextFrame(this.asyncId),this.rafId=requestAnimationFrame(()=>this.render())}stop(){cancelAnimationFrame(this.rafId)}async seek(e){this.asyncId++,await this.resetIterator(e)}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){this.asyncId++,this.stop(),this.stopIterator(),this.posterDrawn=!1,this.input=null,this.videoSink=null}}class Ia{constructor({canvas:e,ctx:t,events:r,option:i={}}){this.events=r,this.option=i,this.audio=new wa(r),this.video=new Sa({canvas:e,ctx:t,events:r,timeupdateInterval:i.timeupdateInterval??250,avSyncTolerance:i.avSyncTolerance??.12,dropLateFrames:i.dropLateFrames??!1,poster:i.poster??"",preflightRange:i.preflightRange??!1}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,r.addEventListener?.("ended",()=>{this.ended=!0,this.paused=!0})}async load(e){const t=++this.loadSeq;this.pause(),this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,setTimeout(()=>this.events.emit("waiting"),0),setTimeout(()=>this.events.emit("loadstart"),0);const r=Number.isFinite(this.option.loadTimeout)?this.option.loadTimeout:0;try{await Promise.race([this.performLoad(e,t),r>0?this.createTimeout(r):new Promise(()=>{})])}catch(i){if(t!==this.loadSeq)return;this.loadSeq++,this.error={code:4,message:i.message},this.networkState=3,this.events.emit("error")}}async performLoad(e,t){let r=!1,i=!1;const a=()=>{r&&i&&(this.readyState=1,this.events.emit("loadedmetadata"),this.events.emit("durationchange"),this.events.emit("progress"))};try{if(await Promise.all([this.video.load(e,()=>{t===this.loadSeq&&(r=!0,a())}),this.audio.load(e,()=>{t===this.loadSeq&&(i=!0,a())})]),t!==this.loadSeq)return;this.readyState=4,this.networkState=1,this.events.emit("loadeddata"),this.events.emit("canplay"),this.events.emit("canplaythrough"),this.events.emit("progress")}catch(s){if(t!==this.loadSeq)return;this.error={code:4,message:s.message},this.networkState=3,this.events.emit("error"),console.error("MediaBunny load error:",s)}}createTimeout(e){return new Promise((t,r)=>{setTimeout(()=>r(new Error("Load timeout")),e)})}async play(){this.paused&&(this.ended&&(this.ended=!1,await this.seek(0)),this.paused=!1,await this.audio.play(),this.video.start(this.audio),this.events.emit("play"),this.events.emit("playing"))}pause(){this.paused||(this.paused=!0,this.audio.pause(),this.video.stop(),this.events.emit("pause"))}async seek(e){const t=!this.paused;this.ended=!1,this.seeking=!0,this.events.emit("seeking"),this.events.emit("waiting"),this.pause(),await Promise.all([this.audio.seek(e),this.video.seek(e)]),this.seeking=!1,this.events.emit("seeked"),t&&!this.ended&&await this.play()}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}destroy(){this.pause(),this.audio.destroy(),this.video.destroy()}get currentTime(){return this.audio.currentTime}get duration(){return this.audio.duration||this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}class va{constructor({art:t,canvas:r,ctx:i,option:a}){this.art=t,this.canvas=r,this.option=a,this.events=new e,this.engine=new Ia({canvas:r,ctx:i,events:this.events,option:a}),this._src=null,this._volume=a.volume??.7,this._muted=!!a.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),a.source?this.src=a.source:t.option?.url&&(this.src=t.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){this.engine.seek(Number(e)||0)}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){const r=this.engine.duration;return!r||Number.isNaN(r)||t<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>e,end:()=>t}}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){this._volume=function(e,t,r){return Math.max(t,Math.min(r,Number(e)||0))}(e,0,1),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return requestAnimationFrame(t=>{e(t,{presentationTime:this.engine.currentTime,expectedDisplayTime:t+16.6,width:this.engine.videoWidth,height:this.engine.videoHeight,mediaTime:this.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:t,receiveTime:t,rtpTimestamp:0})})}cancelVideoFrameCallback(e){cancelAnimationFrame(e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:this.canvas.setAttribute(e,t)}destroy(){this.engine.destroy()}}function Pa(e={}){return t=>{const{constructor:r}=t,{createElement:i}=r.utils,a=i("canvas"),s=a.getContext("2d"),n=new va({art:t,canvas:a,ctx:s,option:e}),o={};for(const e in a)"function"===typeof a[e]&&(o[e]=a[e].bind(a));const c=new Set([...Object.getOwnPropertyNames(n),...Object.getOwnPropertyNames(Object.getPrototypeOf(n))]);for(const e of c)"constructor"!==e&&(e in a||Object.defineProperty(a,e,{get(){const t=n[e];return"function"===typeof t?t.bind(n):t},set(t){n[e]=t},configurable:!0,enumerable:!0}));for(const e in o)a[e]=(...t)=>o[e](...t);function l(){const e=t.template?.$player;e&&!t.option.autoSize&&Object.assign(a.style,{width:"100%",height:"100%",objectFit:"contain"})}return t.on("resize",l),t.on("video:loadedmetadata",l),t.on("destroy",()=>{n.destroy()}),a}}return"undefined"!==typeof window&&(window.artplayerProxyMediabunny=Pa),Pa});