diff --git a/index.html b/index.html index 5fdfca46..9a0b7b2f 100644 --- a/index.html +++ b/index.html @@ -207,6 +207,9 @@ + + + diff --git a/libs/thirdparty/codec-parser.min.js b/libs/thirdparty/codec-parser.min.js new file mode 100644 index 00000000..fb4ac2e9 --- /dev/null +++ b/libs/thirdparty/codec-parser.min.js @@ -0,0 +1 @@ +var CodecParser=function(e){"use strict";const t=Symbol,s=(()=>{const e="left",t="center",s="right";return["","front ","side ","rear "].map((i=>[[e,s],[e,s,t],[e,t,s],[t,e,s],[t]].flatMap((e=>e.map((e=>i+e)).join(", ")))))})(),i="LFE",r="monophonic (mono)",n="stereo",a="surround",o=(e,...t)=>`${[r,n,`linear ${a}`,"quadraphonic",`5.0 ${a}`,`5.1 ${a}`,`6.1 ${a}`,`7.1 ${a}`][e-1]} (${t.join(", ")})`,h=[r,o(2,s[0][0]),o(3,s[0][2]),o(4,s[1][0],s[3][0]),o(5,s[1][2],s[3][0]),o(6,s[1][2],s[3][0],i),o(7,s[1][2],s[2][0],s[3][4],i),o(8,s[1][2],s[2][0],s[3][0],i)],c=48e3,l=44100,u=32e3,d=24e3,p=22050,_=16e3,m=8e3,g="absoluteGranulePosition",f="bandwidth",b="bitDepth",C="bitrate",y=C+"Maximum",S=C+"Minimum",w=C+"Nominal",P="buffer",k=P+"Fullness",v="codec",F=v+"Frames",x="coupledStreamCount",H="crc",I=H+"16",M=H+"32",U="data",O="description",N="duration",$="emphasis",A="hasOpusPadding",R="header",B="isContinuedPacket",L="isCopyrighted",D="isFirstPage",T="isHome",E="isLastPage",G="isOriginal",z="isPrivate",q="isVbr",V="layer",j="length",W="mode",J=W+"Extension",K="mpeg",Q=K+"Version",X="numberAACFrames",Y="outputGain",Z="preSkip",ee="profile",te=t(),se="protection",ie="rawData",re="segments",ne="subarray",ae="version",oe="vorbis",he=oe+"Comments",ce=oe+"Setup",le="block",ue=le+"ingStrategy",de=t(),pe=le+"Size",_e=le+"size0",me=le+"size1",ge=t(),fe="channel",be=fe+"MappingFamily",Ce=fe+"MappingTable",ye=fe+"Mode",Se=t(),we=fe+"s",Pe="copyright",ke=Pe+"Id",ve=Pe+"IdStart",Fe="frame",xe=Fe+"Count",He=Fe+"Length",Ie="Number",Me=Fe+Ie,Ue=Fe+"Padding",Oe=Fe+"Size",Ne="Rate",$e="inputSample"+Ne,Ae="page",Re=Ae+"Checksum",Be=t(),Le=Ae+"SegmentTable",De=Ae+"Sequence"+Ie,Te="sample",Ee=Te+Ie,Ge=Te+Ne,ze=t(),qe=Te+"s",Ve="stream",je=Ve+"Count",We=Ve+"Info",Je=Ve+"Serial"+Ie,Ke=Ve+"StructureVersion",Qe="total",Xe=Qe+"BytesOut",Ye=Qe+"Duration",Ze=Qe+"Samples",et=t(),tt=t(),st=t(),it=t(),rt=t(),nt=t(),at=t(),ot=t(),ht=t(),ct=t(),lt=t(),ut=t(),dt=t(),pt=t(),_t=t(),mt=t(),gt=t(),ft=t(),bt=Uint8Array,Ct=DataView,yt="reserved",St="bad",wt="free",Pt="none",kt="16bit CRC",vt=(e,t,s)=>{for(let i=0;i0;e--)r=s(r);e[i]=r}return e},Ft=vt(new bt(256),(e=>e),(e=>128&e?7^e<<1:e<<1)),xt=[vt(new Uint16Array(256),(e=>e<<8),(e=>e<<1^(32768&e?32773:0)))],Ht=[vt(new Uint32Array(256),(e=>e),(e=>e>>>1^3988292384*(1&e)))];for(let e=0;e<15;e++){xt.push(new Uint16Array(256)),Ht.push(new Uint32Array(256));for(let t=0;t<=255;t++)xt[e+1][t]=xt[0][xt[e][t]>>>8]^xt[e][t]<<8,Ht[e+1][t]=Ht[e][t]>>>8^Ht[0][255&Ht[e][t]]}const It=e=>{const t=e[j],s=t-16;let i=0,r=0;for(;r<=s;)i=Ht[15][255&(e[r++]^i)]^Ht[14][255&(e[r++]^i>>>8)]^Ht[13][255&(e[r++]^i>>>16)]^Ht[12][e[r++]^i>>>24]^Ht[11][e[r++]]^Ht[10][e[r++]]^Ht[9][e[r++]]^Ht[8][e[r++]]^Ht[7][e[r++]]^Ht[6][e[r++]]^Ht[5][e[r++]]^Ht[4][e[r++]]^Ht[3][e[r++]]^Ht[2][e[r++]]^Ht[1][e[r++]]^Ht[0][e[r++]];for(;r!==t;)i=Ht[0][255&(i^e[r++])]^i>>>8;return~i},Mt=(...e)=>{const t=new bt(e.reduce(((e,t)=>e+t[j]),0));return e.reduce(((e,s)=>(t.set(s,e),e+s[j])),0),t},Ut=e=>String.fromCharCode(...e),Ot=[0,8,4,12,2,10,6,14,1,9,5,13,3,11,7,15],Nt=e=>Ot[15&e]<<4|Ot[e>>4];class $t{constructor(e){this._data=e,this._pos=8*e[j]}set position(e){this._pos=e}get position(){return this._pos}read(e){const t=Math.floor(this._pos/8),s=this._pos%8;this._pos-=e;return(Nt(this._data[t-1])<<8)+Nt(this._data[t])>>7-s&255}}class At{constructor(e,t){this._onCodecHeader=e,this._onCodecUpdate=t,this[_t]()}[mt](){this._isEnabled=!0}[_t](){this._headerCache=new Map,this._codecUpdateData=new WeakMap,this._codecHeaderSent=!1,this._codecShouldUpdate=!1,this._bitrate=null,this._isEnabled=!1}[pt](e,t){if(this._onCodecUpdate){this._bitrate!==e&&(this._bitrate=e,this._codecShouldUpdate=!0);const s=this._codecUpdateData.get(this._headerCache.get(this._currentHeader));this._codecShouldUpdate&&s&&this._onCodecUpdate({bitrate:e,...s},t),this._codecShouldUpdate=!1}}[ht](e){const t=this._headerCache.get(e);return t&&this._updateCurrentHeader(e),t}[ct](e,t,s){this._isEnabled&&(this._codecHeaderSent||(this._onCodecHeader({...t}),this._codecHeaderSent=!0),this._updateCurrentHeader(e),this._headerCache.set(e,t),this._codecUpdateData.set(t,s))}_updateCurrentHeader(e){this._onCodecUpdate&&e!==this._currentHeader&&(this._codecShouldUpdate=!0,this._currentHeader=e)}}const Rt=new WeakMap,Bt=new WeakMap;class Lt{constructor(e,t){this._codecParser=e,this._headerCache=t}*[at](){let e;for(;;){if(e=yield*this.Frame[lt](this._codecParser,this._headerCache,0),e)return e;this._codecParser[tt](1)}}*[ot](e){let t=yield*this[at]();const s=Bt.get(t)[j];if(e||this._codecParser._flushing||(yield*this.Header[ht](this._codecParser,this._headerCache,s)))return this._headerCache[mt](),this._codecParser[tt](s),this._codecParser[it](t),t;this._codecParser[rt](`Missing ${Fe} at ${s} bytes from current position.`,`Dropping current ${Fe} and trying again.`),this._headerCache[_t](),this._codecParser[tt](1)}}class Dt{constructor(e,t){Bt.set(this,{[R]:e}),this[U]=t}}class Tt extends Dt{static*[lt](e,t,s,i,r){const n=yield*e[ht](s,i,r);if(n){const e=Rt.get(n)[He],i=Rt.get(n)[qe];return new t(n,(yield*s[et](e,r))[ne](0,e),i)}return null}constructor(e,t,s){super(e,t),this[R]=e,this[qe]=s,this[N]=s/e[Ge]*1e3,this[Me]=null,this[Xe]=null,this[Ze]=null,this[Ye]=null,Bt.get(this)[j]=t[j]}}const Et="unsynchronizationFlag",Gt="extendedHeaderFlag",zt="experimentalFlag",qt="footerPresent";class Vt{static*getID3v2Header(e,t,s){const i={};let r=yield*e[et](3,s);if(73!==r[0]||68!==r[1]||51!==r[2])return null;if(r=yield*e[et](10,s),i[ae]=`id3v2.${r[3]}.${r[4]}`,15&r[5])return null;if(i[Et]=!!(128&r[5]),i[Gt]=!!(64&r[5]),i[zt]=!!(32&r[5]),i[qt]=!!(16&r[5]),128&r[6]||128&r[7]||128&r[8]||128&r[9])return null;const n=r[6]<<21|r[7]<<14|r[8]<<7|r[9];return i[j]=10+n,new Vt(i)}constructor(e){this[ae]=e[ae],this[Et]=e[Et],this[Gt]=e[Gt],this[zt]=e[zt],this[qt]=e[qt],this[j]=e[j]}}class jt{constructor(e){Rt.set(this,e),this[b]=e[b],this[C]=null,this[we]=e[we],this[ye]=e[ye],this[Ge]=e[Ge]}}const Wt={0:[wt,wt,wt,wt,wt],16:[32,32,32,32,8],240:[St,St,St,St,St]},Jt=(e,t,s)=>8*((e+s)%t+t)*(1<<(e+s)/t)-8*t*(t/8|0);for(let e=2;e<15;e++)Wt[e<<4]=[32*e,Jt(e,4,0),Jt(e,4,-1),Jt(e,8,4),Jt(e,8,0)];const Kt="bands ",Qt=" to 31",Xt={0:Kt+4+Qt,16:Kt+8+Qt,32:Kt+12+Qt,48:Kt+16+Qt},Yt="bitrateIndex",Zt="v2",es="v1",ts="Intensity stereo ",ss=", MS stereo ",is="on",rs="off",ns={0:ts+rs+ss+rs,16:ts+is+ss+rs,32:ts+rs+ss+is,48:ts+is+ss+is},as={0:{[O]:yt},2:{[O]:"Layer III",[Ue]:1,[J]:ns,[es]:{[Yt]:2,[qe]:1152},[Zt]:{[Yt]:4,[qe]:576}},4:{[O]:"Layer II",[Ue]:1,[J]:Xt,[qe]:1152,[es]:{[Yt]:1},[Zt]:{[Yt]:4}},6:{[O]:"Layer I",[Ue]:4,[J]:Xt,[qe]:384,[es]:{[Yt]:0},[Zt]:{[Yt]:3}}},os="MPEG Version ",hs="ISO/IEC ",cs={0:{[O]:`${os}2.5 (later extension of MPEG 2)`,[V]:Zt,[Ge]:{0:11025,4:12e3,8:m,12:yt}},8:{[O]:yt},16:{[O]:`${os}2 (${hs}13818-3)`,[V]:Zt,[Ge]:{0:p,4:d,8:_,12:yt}},24:{[O]:`${os}1 (${hs}11172-3)`,[V]:es,[Ge]:{0:l,4:c,8:u,12:yt}},length:j},ls={0:kt,1:Pt},us={0:Pt,1:"50/15 ms",2:yt,3:"CCIT J.17"},ds={0:{[we]:2,[O]:n},64:{[we]:2,[O]:"joint "+n},128:{[we]:2,[O]:"dual channel"},192:{[we]:1,[O]:r}};class ps extends jt{static*[ht](e,t,s){const i={},r=yield*Vt.getID3v2Header(e,t,s);r&&(yield*e[et](r[j],s),e[tt](r[j]));const n=yield*e[et](4,s),a=Ut(n[ne](0,4)),o=t[ht](a);if(o)return new ps(o);if(255!==n[0]||n[1]<224)return null;const h=cs[24&n[1]];if(h[O]===yt)return null;const c=6&n[1];if(as[c][O]===yt)return null;const l={...as[c],...as[c][h[V]]};if(i[Q]=h[O],i[V]=l[O],i[qe]=l[qe],i[se]=ls[1&n[1]],i[j]=4,i[C]=Wt[240&n[2]][l[Yt]],i[C]===St)return null;if(i[Ge]=h[Ge][12&n[2]],i[Ge]===yt)return null;if(i[Ue]=2&n[2]&&l[Ue],i[z]=!!(1&n[2]),i[He]=Math.floor(125*i[C]*i[qe]/i[Ge]+i[Ue]),!i[He])return null;const u=192&n[3];if(i[ye]=ds[u][O],i[we]=ds[u][we],i[J]=l[J][48&n[3]],i[L]=!!(8&n[3]),i[G]=!!(4&n[3]),i[$]=us[3&n[3]],i[$]===yt)return null;i[b]=16;{const{length:e,frameLength:s,samples:r,...n}=i;t[ct](a,i,n)}return new ps(i)}constructor(e){super(e),this[C]=e[C],this[$]=e[$],this[Ue]=e[Ue],this[L]=e[L],this[G]=e[G],this[z]=e[z],this[V]=e[V],this[J]=e[J],this[Q]=e[Q],this[se]=e[se]}}class _s extends Tt{static*[lt](e,t,s){return yield*super[lt](ps,_s,e,t,s)}constructor(e,t,s){super(e,t,s)}}class ms extends Lt{constructor(e,t,s){super(e,t),this.Frame=_s,this.Header=ps,s(this[v])}get[v](){return K}*[ut](){return yield*this[ot]()}}const gs={0:"MPEG-4",8:"MPEG-2"},fs={0:"valid",2:St,4:St,6:St},bs={0:kt,1:Pt},Cs={0:"AAC Main",64:"AAC LC (Low Complexity)",128:"AAC SSR (Scalable Sample Rate)",192:"AAC LTP (Long Term Prediction)"},ys={0:96e3,4:88200,8:64e3,12:c,16:l,20:u,24:d,28:p,32:_,36:12e3,40:11025,44:m,48:7350,52:yt,56:yt,60:"frequency is written explicitly"},Ss={0:{[we]:0,[O]:"Defined in AOT Specific Config"},64:{[we]:1,[O]:r},128:{[we]:2,[O]:o(2,s[0][0])},192:{[we]:3,[O]:o(3,s[1][3])},256:{[we]:4,[O]:o(4,s[1][3],s[3][4])},320:{[we]:5,[O]:o(5,s[1][3],s[3][0])},384:{[we]:6,[O]:o(6,s[1][3],s[3][0],i)},448:{[we]:8,[O]:o(8,s[1][3],s[2][0],s[3][0],i)}};class ws extends jt{static*[ht](e,t,s){const i={},r=yield*e[et](7,s),n=Ut([r[0],r[1],r[2],252&r[3]|3&r[6]]),a=t[ht](n);if(a)Object.assign(i,a);else{if(255!==r[0]||r[1]<240)return null;if(i[Q]=gs[8&r[1]],i[V]=fs[6&r[1]],i[V]===St)return null;const e=1&r[1];i[se]=bs[e],i[j]=e?7:9,i[te]=192&r[2],i[ze]=60&r[2];const s=2&r[2];if(i[ee]=Cs[i[te]],i[Ge]=ys[i[ze]],i[Ge]===yt)return null;i[z]=!!s,i[Se]=448&(r[2]<<8|r[3]),i[ye]=Ss[i[Se]][O],i[we]=Ss[i[Se]][we],i[G]=!!(32&r[3]),i[T]=!!(8&r[3]),i[ke]=!!(8&r[3]),i[ve]=!!(4&r[3]),i[b]=16,i[qe]=1024,i[X]=3&r[6];{const{length:e,channelModeBits:s,profileBits:r,sampleRateBits:a,frameLength:o,samples:h,numberAACFrames:c,...l}=i;t[ct](n,i,l)}}if(i[He]=8191&(r[3]<<11|r[4]<<3|r[5]>>5),!i[He])return null;const o=2047&(r[5]<<6|r[6]>>2);return i[k]=2047===o?"VBR":o,new ws(i)}constructor(e){super(e),this[ke]=e[ke],this[ve]=e[ve],this[k]=e[k],this[T]=e[T],this[G]=e[G],this[z]=e[z],this[V]=e[V],this[j]=e[j],this[Q]=e[Q],this[X]=e[X],this[ee]=e[ee],this[se]=e[se]}get audioSpecificConfig(){const e=Rt.get(this),t=e[te]+64<<5|e[ze]<<5|e[Se]>>3,s=new bt(2);return new Ct(s[P]).setUint16(0,t,!1),s}}class Ps extends Tt{static*[lt](e,t,s){return yield*super[lt](ws,Ps,e,t,s)}constructor(e,t,s){super(e,t,s)}}class ks extends Lt{constructor(e,t,s){super(e,t),this.Frame=Ps,this.Header=ws,s(this[v])}get[v](){return"aac"}*[ut](){return yield*this[ot]()}}class vs extends Tt{static _getFrameFooterCrc16(e){return(e[e[j]-2]<<8)+e[e[j]-1]}static[ft](e){const t=vs._getFrameFooterCrc16(e),s=(e=>{const t=e[j],s=t-16;let i=0,r=0;for(;r<=s;)i^=e[r++]<<8|e[r++],i=xt[15][i>>8]^xt[14][255&i]^xt[13][e[r++]]^xt[12][e[r++]]^xt[11][e[r++]]^xt[10][e[r++]]^xt[9][e[r++]]^xt[8][e[r++]]^xt[7][e[r++]]^xt[6][e[r++]]^xt[5][e[r++]]^xt[4][e[r++]]^xt[3][e[r++]]^xt[2][e[r++]]^xt[1][e[r++]]^xt[0][e[r++]];for(;r!==t;)i=(255&i)<<8^xt[0][i>>8^e[r++]];return i})(e[ne](0,-2));return t===s}constructor(e,t,s){t[We]=s,t[I]=vs._getFrameFooterCrc16(e),super(t,e,Rt.get(t)[qe])}}const Fs="get from STREAMINFO metadata block",xs={0:"Fixed",1:"Variable"},Hs={0:yt,16:192};for(let e=2;e<16;e++)Hs[e<<4]=e<6?576*2**(e-2):2**e;const Is={0:Fs,1:88200,2:176400,3:192e3,4:m,5:_,6:p,7:d,8:u,9:l,10:c,11:96e3,15:St},Ms={0:{[we]:1,[O]:r},16:{[we]:2,[O]:o(2,s[0][0])},32:{[we]:3,[O]:o(3,s[0][1])},48:{[we]:4,[O]:o(4,s[1][0],s[3][0])},64:{[we]:5,[O]:o(5,s[1][1],s[3][0])},80:{[we]:6,[O]:o(6,s[1][1],i,s[3][0])},96:{[we]:7,[O]:o(7,s[1][1],i,s[3][4],s[2][0])},112:{[we]:8,[O]:o(8,s[1][1],i,s[3][0],s[2][0])},128:{[we]:2,[O]:`${n} (left, diff)`},144:{[we]:2,[O]:`${n} (diff, right)`},160:{[we]:2,[O]:`${n} (avg, diff)`},176:yt,192:yt,208:yt,224:yt,240:yt},Us={0:Fs,2:8,4:12,6:yt,8:16,10:20,12:24,14:yt};class Os extends jt{static _decodeUTF8Int(e){if(e[0]>254)return null;if(e[0]<128)return{value:e[0],length:1};let t=1;for(let s=64;s&e[0];s>>=1)t++;let s=t-1,i=0,r=0;for(;s>0;r+=6,s--){if(128!=(192&e[s]))return null;i|=(63&e[s])<>t)<{let t=0;const s=e[j];for(let i=0;i!==s;i++)t=Ft[t^e[i]];return t})(i[ne](0,r[j]-1)))return null;if(!a){const{blockingStrategyBits:e,frameNumber:s,sampleNumber:i,samples:a,sampleRateBits:o,blockSizeBits:h,crc:c,length:l,...u}=r;t[ct](n,r,u)}return new Os(r)}constructor(e){super(e),this[I]=null,this[ue]=e[ue],this[pe]=e[pe],this[Me]=e[Me],this[Ee]=e[Ee],this[We]=null}}class Ns extends Lt{constructor(e,t,s){super(e,t),this.Frame=vs,this.Header=Os,s(this[v])}get[v](){return"flac"}*_getNextFrameSyncOffset(e){const t=yield*this._codecParser[et](2,0),s=t[j]-2;for(;e{const t=Os[gt](e,this._headerCache);if(t)return new vs(e,t,this._streamInfo);this._codecParser[rt]("Failed to parse Ogg FLAC frame","Skipping invalid FLAC frame")})).filter((e=>!!e))),e}}class $s{static*[ht](e,t,s){const i={};let r=yield*e[et](28,s);if(79!==r[0]||103!==r[1]||103!==r[2]||83!==r[3])return null;i[Ke]=r[4];if(248&r[5])return null;i[E]=!!(4&r[5]),i[D]=!!(2&r[5]),i[B]=!!(1&r[5]);const n=new Ct(bt.from(r[ne](0,28))[P]);i[g]=((e,t)=>{try{return e.getBigInt64(t,!0)}catch{const s=128&e.getUint8(t+7)?-1:1;let i=e.getUint32(t,!0),r=e.getUint32(t+4,!0);return-1===s&&(i=1+~i,r=1+~r),r>1048575&&console.warn("This platform does not support BigInt"),s*(i+r*2**32)}})(n,6),i[Je]=n.getInt32(14,!0),i[De]=n.getInt32(18,!0),i[Re]=n.getInt32(22,!0);const a=r[26];i[j]=a+27,r=yield*e[et](i[j],s),i[He]=0,i[Le]=[],i[Be]=bt.from(r[ne](27,i[j]));for(let e=0,t=0;e{const t=Ws[gt](this._identificationHeader,e,this._headerCache);if(t){null===this._preSkipRemaining&&(this._preSkipRemaining=t[Z]);let s=t[Oe]*t[xe]/1e3*t[Ge];return this._preSkipRemaining>0&&(this._preSkipRemaining-=s,s=this._preSkipRemaining<0?-this._preSkipRemaining:0),new Rs(e,t,s)}this._codecParser[nt]("Failed to parse Ogg Opus Header","Not a valid Ogg Opus file")}))),e}}class Ks extends Tt{constructor(e,t,s){super(t,e,s)}}const Qs={};for(let e=0;e<8;e++)Qs[e+6]=2**(6+e);class Xs extends jt{static[gt](e,t,s,i){if(e[j]<30)throw new Error("Out of data while inside an Ogg Page");const r=Ut(e[ne](0,30)),n=t[ht](r);if(n)return new Xs(n);const a={[j]:30};if("vorbis"!==r.substr(0,7))return null;a[U]=bt.from(e[ne](0,30));const o=new Ct(a[U][P]);if(a[ae]=o.getUint32(7,!0),0!==a[ae])return null;if(a[we]=e[11],a[ye]=h[a[we]-1]||"application defined",a[Ge]=o.getUint32(12,!0),a[y]=o.getInt32(16,!0),a[w]=o.getInt32(20,!0),a[S]=o.getInt32(24,!0),a[me]=Qs[(240&e[28])>>4],a[_e]=Qs[15&e[28]],a[_e]>a[me])return null;if(1!==e[29])return null;a[b]=32,a[ce]=i,a[he]=s;{const{length:e,data:s,version:i,vorbisSetup:n,vorbisComments:o,...h}=a;t[ct](r,a,h)}return new Xs(a)}constructor(e){super(e),this[y]=e[y],this[S]=e[S],this[w]=e[w],this[_e]=e[_e],this[me]=e[me],this[U]=e[U],this[he]=e[he],this[ce]=e[ce]}}class Ys extends Lt{constructor(e,t,s){super(e,t),this.Frame=Ks,s(this[v]),this._identificationHeader=null,this._setupComplete=!1,this._prevBlockSize=null}get[v](){return oe}[dt](e){e[F]=[];for(const t of Bt.get(e)[re])if(1===t[0])this._headerCache[mt](),this._identificationHeader=e[U],this._setupComplete=!1;else if(3===t[0])this._vorbisComments=t;else if(5===t[0])this._vorbisSetup=t,this._mode=this._parseSetupHeader(t),this._setupComplete=!0;else if(this._setupComplete){const s=Xs[gt](this._identificationHeader,this._headerCache,this._vorbisComments,this._vorbisSetup);s?e[F].push(new Ks(t,s,this._getSamples(t,s))):this._codecParser[logError]("Failed to parse Ogg Vorbis Header","Not a valid Ogg Vorbis file")}return 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i=0;if(t[re]=s[Le].map((t=>e[U][ne](i,i+=t))),this._continuedPacket[j]&&(t[re][0]=Mt(this._continuedPacket,t[re][0]),this._continuedPacket=new bt),255===s[Be][s[Be][j]-1]&&(this._continuedPacket=Mt(this._continuedPacket,t[re].pop())),null!==this._previousAbsoluteGranulePosition&&(e[qe]=Number(e[g]-this._previousAbsoluteGranulePosition)),this._previousAbsoluteGranulePosition=e[g],this._isSupported){const t=this._parser[dt](e);return this._codecParser[it](t),t}return e}}class ei extends Lt{constructor(e,t,s){super(e,t),this._onCodec=s,this.Frame=As,this.Header=$s,this._streams=new Map,this._currentSerialNumber=null}get[v](){const e=this._streams.get(this._currentSerialNumber);return e?e.codec:""}*[ut](){const e=yield*this[ot](!0);this._currentSerialNumber=e[Je];let t=this._streams.get(this._currentSerialNumber);return t||(t=new 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t;for(;;){if(t=yield*this.Ut[ps](this.ut,this.it,0),t)return t;this.ut[hs](1)}}*[Us](t){let s=yield*this[us]();const i=Ds.get(s)[L];if(t||this.ut.dt||(yield*this.ft[ds](this.ut,this.it,i)))return this.it[gs](),this.ut[hs](i),this.ut[as](s),s;this.ut[ls](`Missing ${kt} at ${i} bytes from current position.`,`Dropping current ${kt} and trying again.`),this.it[ws](),this.ut[hs](1)}}class Ns{constructor(t,s){Ds.set(this,{[D]:t}),this[I]=s}}class Zs extends Ns{static*[ps](t,s,i,e,r){const n=yield*t[ds](i,e,r);if(n){const t=Ps.get(n)[qt],e=Ps.get(n)[Rt];return new s(n,(yield*i[ns](t,r))[ct](0,t),e)}return null}constructor(t,s,i){super(t,s),this[D]=t,this[Rt]=i,this[J]=i/t[Kt]*1e3,this[$t]=null,this[is]=null,this[rs]=null,this[es]=null,Ds.get(this)[L]=s[L]}}const zs="unsynchronizationFlag",Ks="extendedHeaderFlag",Qs="experimentalFlag",Rs="footerPresent";class Gs{static*Mt(t,s,i){const e={};let r=yield*t[ns](3,i);if(73!==r[0]||68!==r[1]||51!==r[2])return null;if(r=yield*t[ns](10,i),e[ut]=`id3v2.${r[3]}.${r[4]}`,15&r[5])return null;if(e[zs]=!!(128&r[5]),e[Ks]=!!(64&r[5]),e[Qs]=!!(32&r[5]),e[Rs]=!!(16&r[5]),128&r[6]||128&r[7]||128&r[8]||128&r[9])return null;const n=r[6]<<21|r[7]<<14|r[8]<<7|r[9];return e[L]=10+n,new Gs(e)}constructor(t){this[ut]=t[ut],this[zs]=t[zs],this[Ks]=t[Ks],this[Qs]=t[Qs],this[Rs]=t[Rs],this[L]=t[L]}}class Xs{constructor(t){Ps.set(this,t),this[A]=t[A],this[O]=null,this[Bt]=t[Bt],this[Ot]=t[Ot],this[Kt]=t[Kt]}}const Ls={0:[Bs,Bs,Bs,Bs,Bs],16:[32,32,32,32,8],240:[vs,vs,vs,vs,vs]},Ws=(t,s,i)=>8*((t+i)%s+s)*(1<<(t+i)/s)-8*s*(s/8|0);for(let Ye=2;Ye<15;Ye++)Ls[Ye<<4]=[32*Ye,Ws(Ye,4,0),Ws(Ye,4,-1),Ws(Ye,8,4),Ws(Ye,8,0)];const ti="bands ",si=" to 31",ii={0:ti+4+si,16:ti+8+si,32:ti+12+si,48:ti+16+si},ei="bitrateIndex",ri="v2",ni="v1",hi="Intensity stereo ",oi=", MS stereo ",ai="on",li="off",ci={0:hi+li+oi+li,16:hi+ai+oi+li,32:hi+li+oi+ai,48:hi+ai+oi+ai},ui={0:{[j]:Os},2:{[j]:"Layer III",[Ct]:1,[tt]:ci,[ni]:{[ei]:2,[Rt]:1152},[ri]:{[ei]:4,[Rt]:576}},4:{[j]:"Layer II",[Ct]:1,[tt]:ii,[Rt]:1152,[ni]:{[ei]:1},[ri]:{[ei]:4}},6:{[j]:"Layer I",[Ct]:4,[tt]:ii,[Rt]:384,[ni]:{[ei]:0},[ri]:{[ei]:3}}},Ui="MPEG Version ",di="ISO/IEC ",fi={0:{[j]:Ui+"2.5 (later extension of MPEG 2)",[X]:ri,[Kt]:{0:11025,4:12e3,8:Y,12:Os}},8:{[j]:Os},16:{[j]:`${Ui}2 (${di}13818-3)`,[X]:ri,[Kt]:{0:w,4:m,8:g,12:Os}},24:{[j]:`${Ui}1 (${di}11172-3)`,[X]:ni,[Kt]:{0:M,4:p,8:y,12:Os}},length:L},pi={0:_s,1:Fs},Mi={0:Fs,1:"50/15 ms",2:Os,3:"CCIT J.17"},yi={0:{[Bt]:2,[j]:u},64:{[Bt]:2,[j]:"joint "+u},128:{[Bt]:2,[j]:"dual channel"},192:{[Bt]:1,[j]:c}};class mi extends Xs{static*[ds](t,s,i){const e={},r=yield*Gs.Mt(t,s,i);r&&(yield*t[ns](r[L],i),t[hs](r[L]));const n=yield*t[ns](4,i),h=Cs(n[ct](0,4)),o=s[ds](h);if(o)return new mi(o);if(255!==n[0]||n[1]<224)return null;const a=fi[24&n[1]];if(a[j]===Os)return null;const l=6&n[1];if(ui[l][j]===Os)return null;const c={...ui[l],...ui[l][a[X]]};if(e[it]=a[j],e[X]=c[j],e[Rt]=c[Rt],e[at]=pi[1&n[1]],e[L]=4,e[O]=Ls[240&n[2]][c[ei]],e[O]===vs)return null;if(e[Kt]=a[Kt][12&n[2]],e[Kt]===Os)return null;if(e[Ct]=2&n[2]&&c[Ct],e[R]=!!(1&n[2]),e[qt]=Math.floor(125*e[O]*e[Rt]/e[Kt]+e[Ct]),!e[qt])return null;const u=192&n[3];if(e[Ot]=yi[u][j],e[Bt]=yi[u][Bt],e[tt]=c[tt][48&n[3]],e[N]=!!(8&n[3]),e[Q]=!!(4&n[3]),e[x]=Mi[3&n[3]],e[x]===Os)return null;e[A]=16;{const{length:t,frameLength:i,yt:r,...n}=e;s[fs](h,e,n)}return new mi(e)}constructor(t){super(t),this[O]=t[O],this[x]=t[x],this[Ct]=t[Ct],this[N]=t[N],this[Q]=t[Q],this[R]=t[R],this[X]=t[X],this[tt]=t[tt],this[it]=t[it],this[at]=t[at]}}class wi extends Zs{static*[ps](t,s,i){return yield*super[ps](mi,wi,t,s,i)}constructor(t,s,i){super(t,s,i)}}class gi extends Es{constructor(t,s,i){super(t,s),this.Ut=wi,this.ft=mi,i(this[k])}get[k](){return st}*[Ms](){return yield*this[Us]()}}const Yi={0:"MPEG-4",8:"MPEG-2"},Ti={0:"valid",2:vs,4:vs,6:vs},bi={0:_s,1:Fs},Ai={0:"AAC Main",64:"AAC LC (Low Complexity)",128:"AAC SSR (Scalable Sample Rate)",192:"AAC LTP (Long Term Prediction)"},Oi={0:96e3,4:88200,8:64e3,12:p,16:M,20:y,24:m,28:w,32:g,36:12e3,40:11025,44:Y,48:7350,52:Os,56:Os,60:"frequency is written explicitly"},vi={0:{[Bt]:0,[j]:"Defined in AOT Specific Config"},64:{[Bt]:1,[j]:c},128:{[Bt]:2,[j]:d(2,a[0][0])},192:{[Bt]:3,[j]:d(3,a[1][3])},256:{[Bt]:4,[j]:d(4,a[1][3],a[3][4])},320:{[Bt]:5,[j]:d(5,a[1][3],a[3][0])},384:{[Bt]:6,[j]:d(6,a[1][3],a[3][0],l)},448:{[Bt]:8,[j]:d(8,a[1][3],a[2][0],a[3][0],l)}};class Bi extends Xs{static*[ds](t,s,i){const e={},r=yield*t[ns](7,i),n=Cs([r[0],r[1],r[2],252&r[3]|3&r[6]]),h=s[ds](n);if(h)Object.assign(e,h);else{if(255!==r[0]||r[1]<240)return null;if(e[it]=Yi[8&r[1]],e[X]=Ti[6&r[1]],e[X]===vs)return null;const t=1&r[1];e[at]=bi[t],e[L]=t?7:9,e[ot]=192&r[2],e[Qt]=60&r[2];const i=2&r[2];if(e[ht]=Ai[e[ot]],e[Kt]=Oi[e[Qt]],e[Kt]===Os)return null;e[R]=!!i,e[vt]=448&(r[2]<<8|r[3]),e[Ot]=vi[e[vt]][j],e[Bt]=vi[e[vt]][Bt],e[Q]=!!(32&r[3]),e[z]=!!(8&r[3]),e[_t]=!!(8&r[3]),e[Vt]=!!(4&r[3]),e[A]=16,e[Rt]=1024,e[et]=3&r[6];{const{length:t,wt:i,gt:r,Yt:h,frameLength:o,yt:a,Tt:l,...c}=e;s[fs](n,e,c)}}if(e[qt]=8191&(r[3]<<11|r[4]<<3|r[5]>>5),!e[qt])return null;const o=2047&(r[5]<<6|r[6]>>2);return e[V]=2047===o?"VBR":o,new Bi(e)}constructor(t){super(t),this[_t]=t[_t],this[Vt]=t[Vt],this[V]=t[V],this[z]=t[z],this[Q]=t[Q],this[R]=t[R],this[X]=t[X],this[L]=t[L],this[it]=t[it],this[et]=t[et],this[ht]=t[ht],this[at]=t[at]}get bt(){const t=Ps.get(this),s=t[ot]+64<<5|t[Qt]<<5|t[vt]>>3,i=new bs(2);return new As(i[_]).setUint16(0,s,!1),i}}class Fi extends Zs{static*[ps](t,s,i){return yield*super[ps](Bi,Fi,t,s,i)}constructor(t,s,i){super(t,s,i)}}class _i extends Es{constructor(t,s,i){super(t,s),this.Ut=Fi,this.ft=Bi,i(this[k])}get[k](){return"aac"}*[Ms](){return yield*this[Us]()}}class Vi extends Zs{static At(t){return(t[t[L]-2]<<8)+t[t[L]-1]}static[Ts](t){const s=Vi.At(t),i=(t=>{const s=t[L],i=s-16;let e=0,r=0;for(;r<=i;)e^=t[r++]<<8|t[r++],e=Ss[15][e>>8]^Ss[14][255&e]^Ss[13][t[r++]]^Ss[12][t[r++]]^Ss[11][t[r++]]^Ss[10][t[r++]]^Ss[9][t[r++]]^Ss[8][t[r++]]^Ss[7][t[r++]]^Ss[6][t[r++]]^Ss[5][t[r++]]^Ss[4][t[r++]]^Ss[3][t[r++]]^Ss[2][t[r++]]^Ss[1][t[r++]]^Ss[0][t[r++]];for(;r!==s;)e=(255&e)<<8^Ss[0][e>>8^t[r++]];return e})(t[ct](0,-2));return s===i}constructor(t,s,i){s[Lt]=i,s[$]=Vi.At(t),super(s,t,Ps.get(s)[Rt])}}const ki="get from STREAMINFO metadata block",Si={0:"Fixed",1:"Variable"},qi={0:Os,16:192};for(let Ye=2;Ye<16;Ye++)qi[Ye<<4]=Ye<6?576*2**(Ye-2):2**Ye;const Hi={0:ki,1:88200,2:176400,3:192e3,4:Y,5:g,6:w,7:m,8:y,9:M,10:p,11:96e3,15:vs},$i={0:{[Bt]:1,[j]:c},16:{[Bt]:2,[j]:d(2,a[0][0])},32:{[Bt]:3,[j]:d(3,a[0][1])},48:{[Bt]:4,[j]:d(4,a[1][0],a[3][0])},64:{[Bt]:5,[j]:d(5,a[1][1],a[3][0])},80:{[Bt]:6,[j]:d(6,a[1][1],l,a[3][0])},96:{[Bt]:7,[j]:d(7,a[1][1],l,a[3][4],a[2][0])},112:{[Bt]:8,[j]:d(8,a[1][1],l,a[3][0],a[2][0])},128:{[Bt]:2,[j]:u+" (left, diff)"},144:{[Bt]:2,[j]:u+" (diff, right)"},160:{[Bt]:2,[j]:u+" (avg, diff)"},176:Os,192:Os,208:Os,224:Os,240:Os},Ci={0:ki,2:8,4:12,6:Os,8:16,10:20,12:24,14:Os};class Ii extends Xs{static Ot(t){if(t[0]>254)return null;if(t[0]<128)return{value:t[0],length:1};let s=1;for(let n=64;n&t[0];n>>=1)s++;let i=s-1,e=0,r=0;for(;i>0;r+=6,i--){if(128!=(192&t[i]))return null;e|=(63&t[i])<>s)<{let s=0;const i=t[L];for(let e=0;e!==i;e++)s=ks[s^t[e]];return s})(e[ct](0,r[L]-1)))return null;if(!h){const{vt:t,frameNumber:i,Bt:e,yt:h,Yt:o,Ft:a,_t:l,length:c,...u}=r;s[fs](n,r,u)}return new Ii(r)}constructor(t){super(t),this[$]=null,this[Mt]=t[Mt],this[mt]=t[mt],this[$t]=t[$t],this[zt]=t[zt],this[Lt]=null}}class ji extends Es{constructor(t,s,i){super(t,s),this.Ut=Vi,this.ft=Ii,i(this[k])}get[k](){return"flac"}*Vt(t){const s=yield*this.ut[ns](2,0),i=s[L]-2;for(;t{const s=Ii[Ys](t,this.it);if(s)return new Vi(t,s,this.kt);this.ut[ls]("Failed to parse Ogg FLAC frame","Skipping invalid FLAC frame")})).filter((t=>!!t))),t}}class Ji{static*[ds](t,s,i){const e={};let r=yield*t[ns](28,i);if(79!==r[0]||103!==r[1]||103!==r[2]||83!==r[3])return null;if(e[ts]=r[4],248&r[5])return null;e[K]=!!(4&r[5]),e[Z]=!!(2&r[5]),e[E]=!!(1&r[5]);const n=new As(bs.from(r[ct](0,28))[_]);e[T]=(t=>{try{return t.getBigInt64(6,!0)}catch{const s=128&t.getUint8(13)?-1:1;let i=t.getUint32(6,!0),e=t.getUint32(10,!0);return-1===s&&(i=1+~i,e=1+~e),e>1048575&&console.warn("This platform does not support BigInt"),s*(i+e*2**32)}})(n),e[Wt]=n.getInt32(14,!0),e[Nt]=n.getInt32(18,!0),e[Pt]=n.getInt32(22,!0);const h=r[26];e[L]=h+27,r=yield*t[ns](e[L],i),e[qt]=0,e[Et]=[],e[Dt]=bs.from(r[ct](27,e[L]));for(let o=0,a=0;o{const s=Li[Ys](this.Ht,t,this.it);if(s){null===this.$t&&(this.$t=s[nt]);let i=s[It]*s[St]/1e3*s[Kt];return this.$t>0&&(this.$t-=i,i=this.$t<0?-this.$t:0),new Pi(t,s,i)}this.ut[cs]("Failed to parse Ogg Opus Header","Not a valid Ogg Opus file")}))),t}}class te extends Zs{constructor(t,s,i){super(s,t,i)}}const se={};for(let Ye=0;Ye<8;Ye++)se[Ye+6]=2**(6+Ye);class ie extends Xs{static[Ys](t,s,i,e){if(t[L]<30)throw Error("Out of data while inside an Ogg Page");const r=Cs(t[ct](0,30)),n=s[ds](r);if(n)return new ie(n);const h={[L]:30};if("vorbis"!==r.substr(0,7))return null;h[I]=bs.from(t[ct](0,30));const o=new As(h[I][_]);if(h[ut]=o.getUint32(7,!0),0!==h[ut])return null;if(h[Bt]=t[11],h[Ot]=f[h[Bt]-1]||"application defined",h[Kt]=o.getUint32(12,!0),h[v]=o.getInt32(16,!0),h[F]=o.getInt32(20,!0),h[B]=o.getInt32(24,!0),h[gt]=se[(240&t[28])>>4],h[wt]=se[15&t[28]],h[wt]>h[gt])return 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r,this.qs(),this[ye](Me)}qs(){this.Ls=!0,this.Ws=0,this.ut=new oe("audio/ogg",{os:this.zt,Us:!1})}[ye](t){if(this.Rs){const t=this.Rs;t.ready.then((()=>t.free()))}this.Rs=new t,this.Gs=this.Rs.ready}get ready(){return this.Gs}async reset(){return this.qs(),this.Rs.reset()}free(){this.Rs.free()}async ti(t){const s=[];for(let r=0;rt[le])))}const i=await this.Rs.decodePackets(s);this.Ws+=i.samplesDecoded;const e=t[t.length-1];if(e&&e[ue]){const t=this.Ws-e[fe];if(t>0){for(let s=0;s setTimeout(res, time)); + } + class AudioEffect { + constructor(ac) { } + /** + * 连接至其他效果器 + * @param target 目标输入 IAudioInput + * @param output 当前效果器输出通道 Number + * @param input 目标效果器的输入通道 Number + */ + connect(target, output, input) { + this.output.connect(target.input, output, input); + } + + /** + * 与其他效果器取消连接 + * @param target 目标输入 IAudioInput + * @param output 当前效果器输出通道 Number + * @param input 目标效果器的输入通道 Number + */ + disconnect(target, output, input) { + if (!target) { + if (!isNil(output)) { + this.output.disconnect(output); + } else { + this.output.disconnect(); + } + } else { + if (!isNil(output)) { + if (!isNil(input)) { + this.output.disconnect(target.input, output, input); + } else { + this.output.disconnect(target.input, output); + } + } else { + this.output.disconnect(target.input); + } + } + } + } + + class StereoEffect extends AudioEffect { + constructor(ac) { + super(ac); + const panner = ac.createPanner(); + this.input = panner; + this.output = panner; + } + + /** + * 设置音频朝向，x正方形水平向右，y正方形垂直于地面向上，z正方向垂直屏幕远离用户 + * @param x 朝向x坐标 Number + * @param y 朝向y坐标 Number + * @param z 朝向z坐标 Number + */ + setOrientation(x, y, z) { + this.output.orientationX.value = x; + this.output.orientationY.value = y; + this.output.orientationZ.value = z; + } + /** + * 设置音频位置，x正方形水平向右，y正方形垂直于地面向上，z正方向垂直屏幕远离用户 + * @param x 位置x坐标 Number + * @param y 位置y坐标 Number + * @param z 位置z坐标 Number + */ + setPosition(x, y, z) { + this.output.positionX.value = x; + this.output.positionY.value = y; + this.output.positionZ.value = z; + } + end() { } + + start() { } + } + class VolumeEffect extends AudioEffect { + constructor(ac) { + super(ac); + const gain = ac.createGain(); + this.input = gain; + this.output = gain; + } + + /** + * 设置音量大小 + * @param volume 音量大小 Number + */ + setVolume(volume) { + this.output.gain.value = volume; + } + + /** + * 获取音量大小 Number + */ + getVolume() { + return this.output.gain.value; + } + + end() { } + + start() { } + } + class ChannelVolumeEffect extends AudioEffect { + /** 所有的音量控制节点 */ + + constructor(ac) { + super(ac); + /** 所有的音量控制节点 */ + this.gain = []; + const splitter = ac.createChannelSplitter(); + const merger = ac.createChannelMerger(); + this.output = merger; + this.input = splitter; + for (let i = 0; i < 6; i++) { + const gain = ac.createGain(); + splitter.connect(gain, i); + gain.connect(merger, 0, i); + this.gain.push(gain); + } + } + + /** + * 设置某个声道的音量大小 + * @param channel 要设置的声道，可填0-5 Number + * @param volume 这个声道的音量大小 Number + */ + setVolume(channel, volume) { + if (!this.gain[channel]) return; + this.gain[channel].gain.value = volume; + } + + /** + * 获取某个声道的音量大小，可填0-5 + * @param channel 要获取的声道 Number + */ + getVolume(channel) { + if (!this.gain[channel]) return 0; + return this.gain[channel].gain.value; + } + + end() { } + + start() { } + } + class DelayEffect extends AudioEffect { + constructor(ac) { + super(ac); + + const delay = ac.createDelay(); + this.input = delay; + this.output = delay; + } + + /** + * 设置延迟时长 + * @param delay 延迟时长，单位秒 Number + */ + setDelay(delay) { + this.output.delayTime.value = delay; + } + + /** + * 获取延迟时长 + */ + getDelay() { + return this.output.delayTime.value; + } + + end() { } + + start() { } + } + class EchoEffect extends AudioEffect { + constructor(ac) { + super(ac); + /** 当前增益 */ + this.gain = 0.5; + /** 是否正在播放 */ + this.playing = false; + const delay = ac.createDelay(); + const gain = ac.createGain(); + gain.gain.value = 0.5; + delay.delayTime.value = 0.05; + delay.connect(gain); + gain.connect(delay); + /** 延迟节点 */ + this.delay = delay; + /** 反馈增益节点 */ + this.gainNode = gain; + + this.input = gain; + this.output = gain; + } + + /** + * 设置回声反馈增益大小 + * @param gain 增益大小，范围 0-1，大于等于1的视为0.5，小于0的视为0 Number + */ + setFeedbackGain(gain) { + const resolved = gain >= 1 ? 0.5 : gain < 0 ? 0 : gain; + this.gain = resolved; + if (this.playing) this.gainNode.gain.value = resolved; + } + + /** + * 设置回声间隔时长 + * @param delay 回声时长，范围 0.01-Infinity，小于0.01的视为0.01 Number + */ + setEchoDelay(delay) { + const resolved = delay < 0.01 ? 0.01 : delay; + this.delay.delayTime.value = resolved; + } + + /** + * 获取反馈节点增益 + */ + getFeedbackGain() { + return this.gain; + } + + /** + * 获取回声间隔时长 + */ + getEchoDelay() { + return this.delay.delayTime.value; + } + + end() { + this.playing = false; + const echoTime = Math.ceil(Math.log(0.001) / Math.log(this.gain)) + 10; + sleep(this.delay.delayTime.value * echoTime).then(() => { + if (!this.playing) this.gainNode.gain.value = 0; + }); + } + + start() { + this.playing = true; + this.gainNode.gain.value = this.gain; + } + } + + class StreamLoader { + constructor(url) { + /** 传输目标 Set*/ + this.target = new Set(); + this.loading = false; + } + + /** + * 将加载流传递给字节流读取对象 + * @param reader 字节流读取对象 IStreamReader + */ + pipe(reader) { + if (this.loading) { + console.warn( + "Cannot pipe new StreamReader object when stream is loading." + ); + return; + } + this.target.add(reader); + reader.piped(this); + return this; + } + + async start() { + if (this.loading) return; + this.loading = true; + const response = await window.fetch(this.url); + const stream = response.body; + if (!stream) { + console.error("Cannot get reader when fetching '" + this.url + "'."); + return; + } + // 获取读取器 + this.stream = stream; + const reader = response.body?.getReader(); + const targets = [...this.target]; + + await Promise.all(targets.map((v) => v.start(stream, this, response))); + if (reader && reader.read) { + // 开始流传输 + while (true) { + const { value, done } = await reader.read(); + await Promise.all( + targets.map((v) => v.pump(value, done, response)) + ); + if (done) break; + } + } else { + // 如果不支持流传输 + const buffer = await response.arrayBuffer(); + const data = new Uint8Array(buffer); + await Promise.all(targets.map((v) => v.pump(data, true, response))); + } + + this.loading = false; + targets.forEach((v) => v.end(true)); + + // + } + + cancel(reason) { + if (!this.stream) return; + this.stream.cancel(reason); + this.loading = false; + this.target.forEach((v) => v.end(false, reason)); + } + } + const fileSignatures = [ + [AudioType.Mp3, [0x49, 0x44, 0x33]], + [AudioType.Ogg, [0x4f, 0x67, 0x67, 0x53]], + [AudioType.Wav, [0x52, 0x49, 0x46, 0x46]], + [AudioType.Flac, [0x66, 0x4c, 0x61, 0x43]], + [AudioType.Aac, [0xff, 0xf1]], + [AudioType.Aac, [0xff, 0xf9]], + ]; + const oggHeaders = [ + [AudioType.Opus, [0x4f, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64]], + ]; + + function checkAudioType(data) { + let audioType = ""; + // 检查头文件获取音频类型，仅检查前256个字节 + const toCheck = data.slice(0, 256); + for (const [type, value] of fileSignatures) { + if (value.every((v, i) => toCheck[i] === v)) { + audioType = type; + break; + } + } + if (audioType === AudioType.Ogg) { + // 如果是ogg的话，进一步判断是不是opus + for (const [key, value] of oggHeaders) { + const has = toCheck.some((_, i) => { + return value.every((v, ii) => toCheck[i + ii] === v); + }); + if (has) { + audioType = key; + break; + } + } + } + + return audioType; + } + class AudioDecoder { + /** + * 注册一个解码器 + * @param type 要注册的解码器允许解码的类型 + * @param decoder 解码器对象 + */ + static registerDecoder(type, decoder) { + if (!this.decoderMap) this.decoderMap = new Map(); + if (this.decoderMap.has(type)) { + console.warn( + "Audio stream decoder for audio type '" + + type + + "' has already existed." + ); + return; + } + + this.decoderMap.set(type, decoder); + } + + /** + * 解码音频数据 + * @param data 音频文件数据 + * @param player AudioPlayer实例 + */ + static async decodeAudioData(data, player) { + // 检查头文件获取音频类型，仅检查前256个字节 + const toCheck = data.slice(0, 256); + const type = checkAudioType(data); + if (type === "") { + console.error( + "Unknown audio type. Header: '" + + [...toCheck] + .map((v) => v.toString().padStart(2, "0")) + .join(" ") + .toUpperCase() + + "'" + ); + return null; + } + if (isAudioSupport(type)) { + if (data.buffer instanceof ArrayBuffer) { + return player.ac.decodeAudioData(data.buffer); + } else { + return null; + } + } else { + const Decoder = this.decoderMap.get(type); + if (!Decoder) { + return null; + } else { + const decoder = new Decoder(); + await decoder.create(); + const decodedData = await decoder.decode(data); + if (!decodedData) return null; + const buffer = player.ac.createBuffer( + decodedData.channelData.length, + decodedData.channelData[0].length, + decodedData.sampleRate + ); + decodedData.channelData.forEach((v, i) => { + buffer.copyToChannel(v, i); + }); + decoder.destroy(); + return buffer; + } + } + } + } + + class VorbisDecoder { + /** + * 创建音频解码器 + */ + async create() { + this.decoder = new OggVorbisDecoderWebWorker(); + await this.decoder.ready; + } + /** + * 摧毁这个解码器 + */ + destroy() { + this.decoder?.free(); + } + /** + * 解码流数据 + * @param data 流数据 + */ + + async decode(data) { + return this.decoder?.decode(data); + } + /** + * 解码整个文件 + * @param data 文件数据 + */ + async decodeAll(data) { + return this.decoder?.decodeFile(data); + } + /** + * 当音频解码完成后，会调用此函数，需要返回之前还未解析或未返回的音频数据。调用后，该解码器将不会被再次使用 + */ + async flush() { + return this.decoder?.flush(); + } + } + + class OpusDecoder { + /** + * 创建音频解码器 + */ + async create() { + this.decoder = new OggOpusDecoderWebWorker(); + await this.decoder.ready; + } + /** + * 摧毁这个解码器 + */ + destroy() { + this.decoder?.free(); + } + /** + * 解码流数据 + * @param data 流数据 + */ + async decode(data) { + return this.decoder?.decode(data); + } + /** + * 解码整个文件 + * @param data 文件数据 + */ + async decodeAll(data) { + return this.decoder?.decodeFile(data); + } + /** + * 当音频解码完成后，会调用此函数，需要返回之前还未解析或未返回的音频数据。调用后，该解码器将不会被再次使用 + */ + async flush() { + return await this.decoder?.flush(); + } + } + const mimeTypeMap = { + [AudioType.Aac]: "audio/aac", + [AudioType.Flac]: "audio/flac", + [AudioType.Mp3]: "audio/mpeg", + [AudioType.Ogg]: "application/ogg", + [AudioType.Opus]: "application/ogg", + [AudioType.Wav]: "application/ogg", + }; + + function isOggPage(data) { + return !isNil(data.isFirstPage); + } + class AudioStreamSource { + constructor(context) { + this.output = context.createBufferSource(); + /** 是否已经完全加载完毕 */ + this.loaded = false; + /** 是否正在播放 */ + this.playing = false; + /** 已经缓冲了多长时间，如果缓冲完那么跟歌曲时长一致 */ + this.buffered = 0; + /** 已经缓冲的采样点数量 */ + this.bufferedSamples = 0; + /** 歌曲时长，加载完毕之前保持为 0 */ + this.duration = 0; + /** 在流传输阶段，至少缓冲多长时间的音频之后才开始播放，单位秒 */ + this.bufferPlayDuration = 1; + /** 音频的采样率，未成功解析出之前保持为 0 */ + this.sampleRate = 0; + //是否循环播放 + this.loop = false; + /** 上一次播放是从何时开始的 */ + this.lastStartWhen = 0; + /** 开始播放时刻 */ + this.lastStartTime = 0; + /** 上一次播放的缓存长度 */ + this.lastBufferSamples = 0; + + /** 是否已经获取到头文件 */ + this.headerRecieved = false; + /** 音频类型 */ + this.audioType = ""; + /** 每多长时间组成一个缓存 Float32Array */ + this.bufferChunkSize = 10; + /** 缓存音频数据，每 bufferChunkSize 秒钟组成一个 Float32Array，用于流式解码 */ + this.audioData = []; + + this.errored = false; + this.ac = context; + } + /** 当前已经播放了多长时间 */ + get currentTime() { + return this.ac.currentTime - this.lastStartTime + this.lastStartWhen; + } + /** + * 设置每个缓存数据的大小，默认为10秒钟一个缓存数据 + * @param size 每个缓存数据的时长，单位秒 + */ + setChunkSize(size) { + if (this.controller?.loading || this.loaded) return; + this.bufferChunkSize = size; + } + + piped(controller) { + this.controller = controller; + } + + async pump(data, done) { + if (!data || this.errored) return; + if (!this.headerRecieved) { + // 检查头文件获取音频类型，仅检查前256个字节 + const toCheck = data.slice(0, 256); + this.audioType = checkAudioType(data); + if (!this.audioType) { + console.error( + "Unknown audio type. Header: '" + + [...toCheck] + .map((v) => v.toString(16).padStart(2, "0")) + .join(" ") + .toUpperCase() + + "'" + ); + return; + } + // 创建解码器 + const Decoder = AudioDecoder.decoderMap.get(this.audioType); + if (!Decoder) { + this.errored = true; + console.error( + "Cannot decode stream source type of '" + + this.audioType + + "', since there is no registered decoder for that type." + ); + return Promise.reject( + `Cannot decode stream source type of '${this.audioType}', since there is no registered decoder for that type.` + ); + } + this.decoder = new Decoder(); + // 创建数据解析器 + const mime = mimeTypeMap[this.audioType]; + const parser = new CodecParser(mime); + this.parser = parser; + await this.decoder.create(); + this.headerRecieved = true; + } + + const decoder = this.decoder; + const parser = this.parser; + if (!decoder || !parser) { + this.errored = true; + return Promise.reject( + "No parser or decoder attached in this AudioStreamSource" + ); + } + + await this.decodeData(data, decoder, parser); + if (done) await this.decodeFlushData(decoder, parser); + this.checkBufferedPlay(); + } + + /** + * 检查采样率，如果还未解析出采样率，那么将设置采样率，如果当前采样率与之前不同，那么发出警告 + */ + checkSampleRate(info) { + for (const one of info) { + const frame = isOggPage(one) ? one.codecFrames[0] : one; + if (frame) { + const rate = frame.header.sampleRate; + if (this.sampleRate === 0) { + this.sampleRate = rate; + break; + } else { + if (rate !== this.sampleRate) { + console.warn("Sample rate in stream audio must be constant."); + } + } + } + } + } + + /** + * 解析音频数据 + */ + async decodeData(data, decoder, parser) { + // 解析音频数据 + const audioData = await decoder.decode(data); + if (!audioData) return; + // @ts-expect-error 库类型声明错误 + const audioInfo = [...parser.parseChunk(data)]; + + // 检查采样率 + this.checkSampleRate(audioInfo); + // 追加音频数据 + this.appendDecodedData(audioData, audioInfo); + } + + /** + * 解码剩余数据 + */ + async decodeFlushData(decoder, parser) { + const audioData = await decoder.flush(); + if (!audioData) return; + // @ts-expect-error 库类型声明错误 + const audioInfo = [...parser.flush()]; + + this.checkSampleRate(audioInfo); + this.appendDecodedData(audioData, audioInfo); + } + + /** + * 追加音频数据 + */ + appendDecodedData(data, info) { + const channels = data.channelData.length; + if (channels === 0) return; + if (this.audioData.length !== channels) { + this.audioData = []; + for (let i = 0; i < channels; i++) { + this.audioData.push([]); + } + } + // 计算出应该放在哪 + const chunk = this.sampleRate * this.bufferChunkSize; + const sampled = this.bufferedSamples; + const pushIndex = Math.floor(sampled / chunk); + const bufferIndex = sampled % chunk; + const dataLength = data.channelData[0].length; + let buffered = 0; + let nowIndex = pushIndex; + let toBuffer = bufferIndex; + while (buffered < dataLength) { + const rest = toBuffer !== 0 ? chunk - bufferIndex : chunk; + + for (let i = 0; i < channels; i++) { + const audioData = this.audioData[i]; + if (!audioData[nowIndex]) { + audioData.push(new Float32Array(chunk)); + } + const toPush = data.channelData[i].slice(buffered, buffered + rest); + + audioData[nowIndex].set(toPush, toBuffer); + } + buffered += rest; + nowIndex++; + toBuffer = 0; + } + + this.buffered += + info.reduce((prev, curr) => prev + curr.duration, 0) / 1000; + this.bufferedSamples += info.reduce( + (prev, curr) => prev + curr.samples, + 0 + ); + } + + /** + * 检查已缓冲内容，并在未开始播放时播放 + */ + checkBufferedPlay() { + if (this.playing || this.sampleRate === 0) return; + const played = this.lastBufferSamples / this.sampleRate; + const dt = this.buffered - played; + if (this.loaded) { + this.playAudio(played); + return; + } + if (dt < this.bufferPlayDuration) return; + + this.lastBufferSamples = this.bufferedSamples; + // 需要播放 + this.mergeBuffers(); + if (!this.buffer) return; + if (this.playing) this.output.stop(); + this.createSourceNode(this.buffer); + this.output.loop = false; + this.output.start(0, played); + this.lastStartTime = this.ac.currentTime; + this.playing = true; + this.output.addEventListener("ended", () => { + this.playing = false; + this.checkBufferedPlay(); + }); + } + + mergeBuffers() { + const buffer = this.ac.createBuffer( + this.audioData.length, + this.bufferedSamples, + this.sampleRate + ); + const chunk = this.sampleRate * this.bufferChunkSize; + const bufferedChunks = Math.floor(this.bufferedSamples / chunk); + const restLength = this.bufferedSamples % chunk; + for (let i = 0; i < this.audioData.length; i++) { + const audio = this.audioData[i]; + const data = new Float32Array(this.bufferedSamples); + for (let j = 0; j < bufferedChunks; j++) { + data.set(audio[j], chunk * j); + } + if (restLength !== 0) { + data.set( + audio[bufferedChunks].slice(0, restLength), + chunk * bufferedChunks + ); + } + + buffer.copyToChannel(data, i, 0); + } + this.buffer = buffer; + } + + async start() { + delete this.buffer; + this.headerRecieved = false; + this.audioType = ""; + this.errored = false; + this.buffered = 0; + this.sampleRate = 0; + this.bufferedSamples = 0; + this.duration = 0; + this.loaded = false; + if (this.playing) this.output.stop(); + this.playing = false; + this.lastStartTime = this.ac.currentTime; + } + + end(done, reason) { + if (done && this.buffer) { + this.loaded = true; + delete this.controller; + this.mergeBuffers(); + + this.duration = this.buffered; + this.audioData = []; + this.decoder?.destroy(); + delete this.decoder; + delete this.parser; + } else { + console.warn( + "Unexpected end when loading stream audio, reason: '" + + (reason ?? "") + + "'" + ); + } + } + + playAudio(when) { + if (!this.buffer) return; + this.lastStartTime = this.ac.currentTime; + if (this.playing) this.output.stop(); + if (this.route.status !== AudioStatus.Playing) { + this.route.status = AudioStatus.Playing; + } + this.createSourceNode(this.buffer); + this.output.start(0, when); + this.playing = true; + + this.output.addEventListener("ended", () => { + this.playing = false; + if (this.route.status === AudioStatus.Playing) { + this.route.status = AudioStatus.Stoped; + } + if (this.loop && !this.output.loop) this.play(0); + }); + } + /** + * 开始播放这个音频源 + */ + play(when) { + if (this.playing || this.errored) return; + if (this.loaded && this.buffer) { + this.playing = true; + this.playAudio(when); + } else { + this.controller?.start(); + } + } + + createSourceNode(buffer) { + if (!this.target) return; + const node = this.ac.createBufferSource(); + node.buffer = buffer; + if (this.playing) this.output.stop(); + this.playing = false; + this.output = node; + node.connect(this.target.input); + node.loop = this.loop; + } + /** + * 停止播放这个音频源 + * @returns 音频暂停的时刻 number + */ + stop() { + if (this.playing) this.output.stop(); + this.playing = false; + return this.ac.currentTime - this.lastStartTime; + } + /** + * 连接到音频路由图上，每次调用播放的时候都会执行一次 + * @param target 连接至的目标 IAudioInput + */ + connect(target) { + this.target = target; + } + /** + * 设置是否循环播放 + * @param loop 是否循环 boolean) + */ + setLoop(loop) { + this.loop = loop; + } + } + class AudioElementSource { + constructor(context) { + const audio = new Audio(); + audio.preload = "none"; + this.output = context.createMediaElementSource(audio); + this.audio = audio; + this.ac = context; + audio.addEventListener("play", () => { + this.playing = true; + if (this.route.status !== AudioStatus.Playing) { + this.route.status = AudioStatus.Playing; + } + }); + audio.addEventListener("ended", () => { + this.playing = false; + if (this.route.status === AudioStatus.Playing) { + this.route.status = AudioStatus.Stoped; + } + }); + } + get duration() { + return this.audio.duration; + } + get currentTime() { + return this.audio.currentTime; + } + /** + * 设置音频源的路径 + * @param url 音频路径 + */ + setSource(url) { + this.audio.src = url; + } + + play(when = 0) { + if (this.playing) return; + this.audio.currentTime = when; + this.audio.play(); + } + + stop() { + this.audio.pause(); + this.playing = false; + if (this.route.status === AudioStatus.Playing) { + this.route.status = AudioStatus.Stoped; + } + return this.audio.currentTime; + } + + connect(target) { + this.output.connect(target.input); + } + + setLoop(loop) { + this.audio.loop = loop; + } + } + class AudioBufferSource { + constructor(context) { + this.output = context.createBufferSource(); + /** 是否循环 */ + this.loop = false; + /** 上一次播放是从何时开始的 */ + this.lastStartWhen = 0; + /** 播放开始时刻 */ + this.lastStartTime = 0; + this.duration = 0; + this.ac = context; + } + get currentTime() { + return this.ac.currentTime - this.lastStartTime + this.lastStartWhen; + } + + /** + * 设置音频源数据 + * @param buffer 音频源，可以是未解析的 ArrayBuffer，也可以是已解析的 AudioBuffer + */ + async setBuffer(buffer) { + if (buffer instanceof ArrayBuffer) { + this.buffer = await this.ac.decodeAudioData(buffer); + } else { + this.buffer = buffer; + } + this.duration = this.buffer.duration; + } + + play(when) { + if (this.playing || !this.buffer) return; + this.playing = true; + this.lastStartTime = this.ac.currentTime; + if (this.route.status !== AudioStatus.Playing) { + this.route.status = AudioStatus.Playing; + } + this.createSourceNode(this.buffer); + this.output.start(0, when); + this.output.addEventListener("ended", () => { + this.playing = false; + if (this.route.status === AudioStatus.Playing) { + this.route.status = AudioStatus.Stoped; + } + if (this.loop && !this.output.loop) this.play(0); + }); + } + + createSourceNode(buffer) { + if (!this.target) return; + const node = this.ac.createBufferSource(); + node.buffer = buffer; + this.output = node; + node.connect(this.target.input); + node.loop = this.loop; + } + + stop() { + this.output.stop(); + return this.ac.currentTime - this.lastStartTime; + } + + connect(target) { + this.target = target; + } + + setLoop(loop) { + this.loop = loop; + } + } + class AudioPlayer { + constructor() { + /** 音频播放上下文 */ + this.ac = new AudioContext(); + /** 音量节点 */ + this.gain = this.ac.createGain(); + this.gain.connect(this.ac.destination); + this.audioRoutes = new Map(); + } + /** + * 解码音频数据 + * @param data 音频数据 + */ + decodeAudioData(data) { + return AudioDecoder.decodeAudioData(data, this); + } + /** + * 设置音量 + * @param volume 音量 + */ + setVolume(volume) { + this.gain.gain.value = volume; + } + + /** + * 获取音量 + */ + getVolume() { + return this.gain.gain.value; + } + + /** + * 创建一个音频源 + * @param Source 音频源类 + */ + createSource(Source) { + return new Source(this.ac); + } + + /** + * 创建一个兼容流式音频源，可以与流式加载相结合，主要用于处理 opus ogg 不兼容的情况 + */ + createStreamSource() { + return new AudioStreamSource(this.ac); + } + + /** + * 创建一个通过 audio 元素播放的音频源 + */ + createElementSource() { + return new AudioElementSource(this.ac); + } + + /** + * 创建一个通过 AudioBuffer 播放的音频源 + */ + createBufferSource() { + return new AudioBufferSource(this.ac); + } + + /** + * 获取音频目的地 + */ + getDestination() { + return this.gain; + } + + /** + * 创建一个音频效果器 + * @param Effect 效果器类 + */ + createEffect(Effect) { + return new Effect(this.ac); + } + + /** + * 创建一个修改音量的效果器 + * ```txt + * |----------| + * Input ----> | GainNode | ----> Output + * |----------| + * ``` + */ + createVolumeEffect() { + return new VolumeEffect(this.ac); + } + + /** + * 创建一个立体声效果器 + * ```txt + * |------------| + * Input ----> | PannerNode | ----> Output + * |------------| + * ``` + */ + createStereoEffect() { + return new StereoEffect(this.ac); + } + + /** + * 创建一个修改单个声道音量的效果器 + * ```txt + * |----------| + * -> | GainNode | \ + * |--------------| / |----------| -> |------------| + * Input ----> | SplitterNode | ...... | MergerNode | ----> Output + * |--------------| \ |----------| -> |------------| + * -> | GainNode | / + * |----------| + * ``` + */ + createChannelVolumeEffect() { + return new ChannelVolumeEffect(this.ac); + } + + /** + * 创建一个延迟效果器 + * |-----------| + * Input ----> | DelayNode | ----> Output + * |-----------| + */ + createDelay() { + return new DelayEffect(this.ac); + } + + /** + * 创建一个回声效果器 + * ```txt + * |----------| + * Input ----> | GainNode | ----> Output + * ^ |----------| | + * | | + * | |------------| ↓ + * |-- | Delay Node | <-- + * |------------| + * ``` + */ + createEchoEffect() { + return new EchoEffect(this.ac); + } + + /** + * 创建一个音频播放路由 + * @param source 音频源 + */ + createRoute(source) { + return new AudioRoute(source, this); + } + + /** + * 添加一个音频播放路由，可以直接被播放 + * @param id 这个音频播放路由的名称 + * @param route 音频播放路由对象 + */ + addRoute(id, route) { + if (!this.audioRoutes) this.audioRoutes = new Map(); + if (this.audioRoutes.has(id)) { + console.warn( + "Audio route with id of '" + + id + + "' has already existed. New route will override old route." + ); + } + this.audioRoutes.set(id, route); + } + + /** + * 根据名称获取音频播放路由对象 + * @param id 音频播放路由的名称 + */ + getRoute(id) { + return this.audioRoutes.get(id); + } + /** + * 移除一个音频播放路由 + * @param id 要移除的播放路由的名称 + */ + removeRoute(id) { + this.audioRoutes.delete(id); + } + /** + * 播放音频 + * @param id 音频名称 + * @param when 从音频的哪个位置开始播放，单位秒 + */ + play(id, when) { + const route = this.getRoute(id); + if (!route) { + console.warn( + "Cannot play audio route '" + + id + + "', since there is not added route named it." + ); + return; + } + + route.play(when); + } + + /** + * 暂停音频播放 + * @param id 音频名称 + * @returns 当音乐真正停止时兑现 + */ + pause(id) { + const route = this.getRoute(id); + if (!route) { + console.warn( + "Cannot pause audio route '" + + id + + "', since there is not added route named it." + ); + return; + } + return route.pause(); + } + + /** + * 停止音频播放 + * @param id 音频名称 + * @returns 当音乐真正停止时兑现 + */ + stop(id) { + const route = this.getRoute(id); + if (!route) { + console.warn( + "Cannot stop audio route '" + + id + + "', since there is not added route named it." + ); + return; + } + return route.stop(); + } + + /** + * 继续音频播放 + * @param id 音频名称 + */ + resume(id) { + const route = this.getRoute(id); + if (!route) { + console.warn( + "Cannot pause audio route '" + + id + + "', since there is not added route named it." + ); + return; + } + route.resume(); + } + + /** + * 设置听者位置，x正方向水平向右，y正方向垂直于地面向上，z正方向垂直屏幕远离用户 + * @param x 位置x坐标 + * @param y 位置y坐标 + * @param z 位置z坐标 + */ + setListenerPosition(x, y, z) { + const listener = this.ac.listener; + listener.positionX.value = x; + listener.positionY.value = y; + listener.positionZ.value = z; + } + + /** + * 设置听者朝向，x正方向水平向右，y正方向垂直于地面向上，z正方向垂直屏幕远离用户 + * @param x 朝向x坐标 + * @param y 朝向y坐标 + * @param z 朝向z坐标 + */ + setListenerOrientation(x, y, z) { + const listener = this.ac.listener; + listener.forwardX.value = x; + listener.forwardY.value = y; + listener.forwardZ.value = z; + } + + /** + * 设置听者头顶朝向，x正方向水平向右，y正方向垂直于地面向上，z正方向垂直屏幕远离用户 + * @param x 头顶朝向x坐标 + * @param y 头顶朝向y坐标 + * @param z 头顶朝向z坐标 + */ + setListenerUp(x, y, z) { + const listener = this.ac.listener; + listener.upX.value = x; + listener.upY.value = y; + listener.upZ.value = z; + } + } + class AudioRoute { + constructor(source, player) { + source.route = this; + this.output = source.output; + + /** 效果器路由图 */ + this.effectRoute = []; + + /** 结束时长，当音频暂停或停止时，会经过这么长时间之后才真正终止播放，期间可以做音频淡入淡出等效果 */ + this.endTime = 0; + /** 暂停时播放了多长时间 */ + this.pauseCurrentTime = 0; + /** 当前播放状态 */ + this.player = player; + this.status = AudioStatus.Stoped; + + this.shouldStop = false; + /** + * 每次暂停或停止时自增，用于判断当前正在处理的情况。 + * 假如暂停后很快播放，然后很快暂停，那么需要根据这个来判断实际是否应该执行暂停后操作 + */ + this.stopIdentifier = 0; + /** 暂停时刻 */ + this.pauseTime = 0; + this.source = source; + this.source.player = player; + } + /** 音频时长，单位秒 */ + get duration() { + return this.source.duration; + } + /** 当前播放了多长时间，单位秒 */ + get currentTime() { + if (this.status === AudioStatus.Paused) { + return this.pauseCurrentTime; + } else { + return this.source.currentTime; + } + } + set currentTime(time) { + this.source.stop(); + this.source.play(time); + } + /** + * 设置结束时间，暂停或停止时，会经过这么长时间才终止音频的播放，这期间可以做一下音频淡出的效果。 + * @param time 暂停或停止时，经过多长时间之后才会结束音频的播放 + */ + setEndTime(time) { + this.endTime = time; + } + + /** + * 当音频播放时执行的函数，可以用于音频淡入效果 + * @param fn 音频开始播放时执行的函数 + */ + onStart(fn) { + this.audioStartHook = fn; + } + + /** + * 当音频暂停或停止时执行的函数，可以用于音频淡出效果 + * @param fn 音频在暂停或停止时执行的函数，不填时表示取消这个钩子。 + * 包含两个参数，第一个参数是结束时长，第二个参数是当前音频播放路由对象 + */ + onEnd(fn) { + this.audioEndHook = fn; + } + + /** + * 开始播放这个音频 + * @param when 从音频的什么时候开始播放，单位秒 + */ + async play(when = 0) { + if (this.status === AudioStatus.Playing) return; + this.link(); + await this.player.ac.resume(); + if (this.effectRoute.length > 0) { + const first = this.effectRoute[0]; + this.source.connect(first); + const last = this.effectRoute.at(-1); + last.connect({ input: this.player.getDestination() }); + } else { + this.source.connect({ input: this.player.getDestination() }); + } + this.source.play(when); + this.status = AudioStatus.Playing; + this.pauseTime = 0; + this.audioStartHook?.(this); + this.startAllEffect(); + if (this.status !== AudioStatus.Playing) { + this.status = AudioStatus.Playing; + } + } + + /** + * 暂停音频播放 + */ + async pause() { + if (this.status !== AudioStatus.Playing) return; + this.status = AudioStatus.Pausing; + this.stopIdentifier++; + const identifier = this.stopIdentifier; + if (this.audioEndHook) { + this.audioEndHook(this.endTime, this); + await sleep(this.endTime); + } + if ( + this.status !== AudioStatus.Pausing || + this.stopIdentifier !== identifier + ) { + return; + } + this.pauseCurrentTime = this.source.currentTime; + const time = this.source.stop(); + this.pauseTime = time; + if (this.shouldStop) { + this.status = AudioStatus.Stoped; + this.endAllEffect(); + + this.shouldStop = false; + } else { + this.status = AudioStatus.Paused; + this.endAllEffect(); + } + this.endAllEffect(); + } + + /** + * 继续音频播放 + */ + resume() { + if (this.status === AudioStatus.Playing) return; + if ( + this.status === AudioStatus.Pausing || + this.status === AudioStatus.Stoping + ) { + this.audioStartHook?.(this); + + return; + } + if (this.status === AudioStatus.Paused) { + this.play(this.pauseTime); + } else { + this.play(0); + } + this.status = AudioStatus.Playing; + this.pauseTime = 0; + this.audioStartHook?.(this); + this.startAllEffect(); + } + + /** + * 停止音频播放 + */ + async stop() { + if (this.status !== AudioStatus.Playing) { + if (this.status === AudioStatus.Pausing) { + this.shouldStop = true; + } + return; + } + this.status = AudioStatus.Stoping; + this.stopIdentifier++; + const identifier = this.stopIdentifier; + if (this.audioEndHook) { + this.audioEndHook(this.endTime, this); + await sleep(this.endTime); + } + if ( + this.status !== AudioStatus.Stoping || + this.stopIdentifier !== identifier + ) { + return; + } + this.source.stop(); + this.status = AudioStatus.Stoped; + this.pauseTime = 0; + this.endAllEffect(); + } + + /** + * 添加效果器 + * @param effect 要添加的效果，可以是数组，表示一次添加多个 + * @param index 从哪个位置开始添加，如果大于数组长度，那么加到末尾，如果小于0，那么将会从后面往前数。默认添加到末尾 + */ + addEffect(effect, index) { + if (isNil(index)) { + if (effect instanceof Array) { + this.effectRoute.push(...effect); + } else { + this.effectRoute.push(effect); + } + } else { + if (effect instanceof Array) { + this.effectRoute.splice(index, 0, ...effect); + } else { + this.effectRoute.splice(index, 0, effect); + } + } + this.setOutput(); + if (this.source.playing) this.link(); + } + + /** + * 移除一个效果器 + * @param effect 要移除的效果 + */ + removeEffect(effect) { + const index = this.effectRoute.indexOf(effect); + if (index === -1) return; + this.effectRoute.splice(index, 1); + effect.disconnect(); + this.setOutput(); + if (this.source.playing) this.link(); + } + + setOutput() { + const effect = this.effectRoute.at(-1); + if (!effect) this.output = this.source.output; + else this.output = effect.output; + } + + /** + * 连接音频路由图 + */ + link() { + this.effectRoute.forEach((v) => v.disconnect()); + this.effectRoute.forEach((v, i) => { + const next = this.effectRoute[i + 1]; + if (next) { + v.connect(next); + } + }); + } + + startAllEffect() { + this.effectRoute.forEach((v) => v.start()); + } + + endAllEffect() { + this.effectRoute.forEach((v) => v.end()); + } + } + + const audioPlayer = new AudioPlayer(); + + class BgmController { + constructor(player) { + this.mainGain = player.createVolumeEffect(); + this.player = player; + /** bgm音频名称的前缀 */ + this.prefix = "bgms."; + /** 每个 bgm 的音量控制器 */ + this.gain = new Map(); + + /** 正在播放的 bgm */ + this.playingBgm = ""; + /** 是否正在播放 */ + this.playing = false; + + /** 是否已经启用 */ + this.enabled = true; + /** 是否屏蔽所有的音乐切换 */ + this.blocking = false; + /** 渐变时长 */ + this.transitionTime = 2000; + } + + /** + * 设置音频渐变时长 + * @param time 渐变时长 + */ + setTransitionTime(time) { + this.transitionTime = time; + for (const [, value] of this.gain) { + value.transition.time(time); + } + } + + /** + * 屏蔽音乐切换 + */ + blockChange() { + this.blocking = true; + } + + /** + * 取消屏蔽音乐切换 + */ + unblockChange() { + this.blocking = false; + } + + /** + * 设置总音量大小 + * @param volume 音量大小 + */ + setVolume(volume) { + this.mainGain.setVolume(volume); + this._volume = volume; + } + /** + * 获取总音量大小 + */ + getVolume() { + return this.mainGain.getVolume(); + } + /** + * 设置是否启用 + * @param enabled 是否启用 + */ + setEnabled(enabled) { + if (enabled) this.resume(); + else this.stop(); + this.enabled = enabled; + } + + /** + * 设置 bgm 音频名称的前缀 + */ + setPrefix(prefix) { + this.prefix = prefix; + } + + getId(name) { + return `${this.prefix}${name}`; + } + + /** + * 根据 bgm 名称获取其 AudioRoute 实例 + * @param id 音频名称 + */ + get(id) { + return this.player.getRoute(this.getId(id)); + } + + /** + * 添加一个 bgm + * @param id 要添加的 bgm 的名称 + * @param url 指定 bgm 的加载地址 + */ + addBgm(id, url = `project/bgms/${id}`) { + const type = guessTypeByExt(id); + if (!type) { + console.warn( + "Unknown audio extension name: '" + + id.split(".").slice(0, -1).join(".") + + "'" + ); + return; + } + const gain = this.player.createVolumeEffect(); + if (isAudioSupport(type)) { + const source = audioPlayer.createElementSource(); + source.setSource(url); + source.setLoop(true); + const route = new AudioRoute(source, audioPlayer); + route.addEffect([gain, this.mainGain]); + audioPlayer.addRoute(this.getId(id), route); + this.setTransition(id, route, gain); + } else { + const source = audioPlayer.createStreamSource(); + const stream = new StreamLoader(url); + stream.pipe(source); + source.setLoop(true); + const route = new AudioRoute(source, audioPlayer); + route.addEffect([gain, this.mainGain]); + audioPlayer.addRoute(this.getId(id), route); + this.setTransition(id, route, gain); + } + } + + /** + * 移除一个 bgm + * @param id 要移除的 bgm 的名称 + */ + removeBgm(id) { + this.player.removeRoute(this.getId(id)); + const gain = this.gain.get(id); + gain?.transition.ticker.destroy(); + this.gain.delete(id); + } + + setTransition(id, route, gain) { + const transition = new Transition(); + transition + .time(this.transitionTime) + .mode(linear()) + .transition("volume", 0); + + const tick = () => { + gain.setVolume(transition.value.volume); + }; + + /** + * @param expect 在结束时应该是正在播放还是停止 + */ + const setTick = async (expect) => { + transition.ticker.remove(tick); + transition.ticker.add(tick); + const identifier = route.stopIdentifier; + await sleep(this.transitionTime + 500); + if (route.status === expect && identifier === route.stopIdentifier) { + transition.ticker.remove(tick); + if (route.status === AudioStatus.Playing) { + gain.setVolume(1); + } else { + gain.setVolume(0); + } + } + }; + + route.onStart(async () => { + transition.transition("volume", 1); + setTick(AudioStatus.Playing); + }); + route.onEnd(() => { + transition.transition("volume", 0); + setTick(AudioStatus.Paused); + }); + route.setEndTime(this.transitionTime); + + this.gain.set(id, { effect: gain, transition }); + } + + /** + * 播放一个 bgm + * @param id 要播放的 bgm 名称 + */ + play(id, when) { + if (this.blocking) return; + if (id !== this.playingBgm && this.playingBgm) { + this.player.pause(this.getId(this.playingBgm)); + } + this.playingBgm = id; + if (!this.enabled) return; + this.player.play(this.getId(id), when); + this.playing = true; + } + + /** + * 继续当前的 bgm + */ + resume() { + if (this.blocking || !this.enabled || this.playing) return; + if (this.playingBgm) { + this.player.resume(this.getId(this.playingBgm)); + } + this.playing = true; + } + + /** + * 暂停当前的 bgm + */ + pause() { + if (this.blocking || !this.enabled) return; + if (this.playingBgm) { + this.player.pause(this.getId(this.playingBgm)); + } + this.playing = false; + } + + /** + * 停止当前的 bgm + */ + stop() { + if (this.blocking || !this.enabled) return; + if (this.playingBgm) { + this.player.stop(this.getId(this.playingBgm)); + } + this.playing = false; + } + } + const bgmController = new BgmController(audioPlayer); + + class SoundPlayer { + constructor(player) { + /** 每个音效的唯一标识符 */ + this.num = 0; + this.enabled = true; + this.gain = player.createVolumeEffect(); + /** 每个音效的数据 */ + this.buffer = new Map(); + /** 所有正在播放的音乐 */ + this.playing = new Set(); + this.player = player; + } + /** + * 设置是否启用音效 + * @param enabled 是否启用音效 + */ + setEnabled(enabled) { + if (!enabled) this.stopAllSounds(); + this.enabled = enabled; + } + + /** + * 设置音量大小 + * @param volume 音量大小 + */ + setVolume(volume) { + this.gain.setVolume(volume); + } + /** + * 获取音量大小 + */ + getVolume() { + return this.gain.getVolume(); + } + /** + * 添加一个音效 + * @param id 音效名称 + * @param data 音效的Uint8Array数据 + */ + async add(id, data) { + const buffer = await this.player.decodeAudioData(data); + if (!buffer) { + console.warn( + "Cannot decode sound '" + + id + + "', since audio file may not supported by 2.b." + ); + return; + } + this.buffer.set(id, buffer); + } + + /** + * 播放一个音效 + * @param id 音效名称 + * @param position 音频位置，[0, 0, 0]表示正中心，x轴指向水平向右，y轴指向水平向上，z轴指向竖直向上 + * @param orientation 音频朝向，[0, 1, 0]表示朝向前方 + */ + play(id, position = [0, 0, 0], orientation = [1, 0, 0]) { + if (!this.enabled || !id) return -1; + const buffer = this.buffer.get(id); + if (!buffer) { + console.warn( + "Cannot play sound '" + + id + + "', since there is no added data named it." + ); + return -1; + } + const soundNum = this.num++; + + const source = this.player.createBufferSource(); + source.setBuffer(buffer); + const route = this.player.createRoute(source); + const stereo = this.player.createStereoEffect(); + stereo.setPosition(position[0], position[1], position[2]); + stereo.setOrientation(orientation[0], orientation[1], orientation[2]); + route.addEffect([stereo, this.gain]); + this.player.addRoute(`sounds.${soundNum}`, route); + route.play(); + source.output.addEventListener("ended", () => { + this.playing.delete(soundNum); + }); + this.playing.add(soundNum); + return soundNum; + } + + /** + * 停止一个音效 + * @param num 音效的唯一 id + */ + stop(num) { + const id = `sounds.${num}`; + const route = this.player.getRoute(id); + if (route) { + route.stop(); + this.player.removeRoute(id); + this.playing.delete(num); + } + } + + /** + * 停止播放所有音效 + */ + stopAllSounds() { + this.playing.forEach((v) => { + const id = `sounds.${v}`; + const route = this.player.getRoute(id); + if (route) { + route.stop(); + this.player.removeRoute(id); + } + }); + this.playing.clear(); + } + } + const soundPlayer = new SoundPlayer(audioPlayer); + + function loadAllBgm() { + const data = data_a1e2fb4a_e986_4524_b0da_9b7ba7c0874d; + for (const bgm of data.main.bgms) { + bgmController.addBgm(bgm); + } + } + loadAllBgm(); + AudioDecoder.registerDecoder(AudioType.Ogg, VorbisDecoder); + AudioDecoder.registerDecoder(AudioType.Opus, OpusDecoder); + + core.plugin.audioSystem = { + AudioType, + AudioDecoder, + AudioStatus, + checkAudioType, + isAudioSupport, + audioPlayer, + soundPlayer, + bgmController, + guessTypeByExt, + BgmController, + SoundPlayer, + EchoEffect, + DelayEffect, + ChannelVolumeEffect, + VolumeEffect, + StereoEffect, + AudioEffect, + AudioPlayer, + AudioRoute, + AudioStreamSource, + AudioElementSource, + AudioBufferSource, + loadAllBgm, + StreamLoader, + }; + //bgm相关复写 + control.prototype.playBgm = (bgm, when) => { + bgm = core.getMappedName(bgm); + if (main.mode != "play" || !core.material.bgms[bgm]) return; + // 如果不允许播放 + if (!core.musicStatus.bgmStatus) { + try { + core.musicStatus.playingBgm = bgm; + core.musicStatus.lastBgm = bgm; + core.material.bgms[bgm].pause(); + } catch (e) { + console.error(e); + } + return; + } + core.setMusicBtn(); + + try { + bgmController.play(bgm, when); + } catch (e) { + console.log("无法播放BGM " + bgm); + console.error(e); + core.musicStatus.playingBgm = null; + } + + }; + control.prototype.pauseBgm = () => { + bgmController.pause(); + core.setMusicBtn(); + }; + + control.prototype.resumeBgm = function () { + bgmController.resume(); + core.setMusicBtn(); + }; + control.prototype.checkBgm = function () { + core.playBgm(bgmController.playingBgm || main.startBgm); + }; + control.prototype.triggerBgm = function () { + core.musicStatus.bgmStatus = !core.musicStatus.bgmStatus; + if (bgmController.playing) bgmController.pause(); + else bgmController.resume(); + core.setMusicBtn(); + core.setLocalStorage("bgmStatus", core.musicStatus.bgmStatus); + }; + //sound相关复写 + control.prototype.playSound = function ( + sound, + _pitch, + callback, + position, + orientation + ) { + if (main.mode != "play" || !core.musicStatus.soundStatus) return callback?.(); + const name = core.getMappedName(sound); + const num = soundPlayer.play(name, position, orientation); + const route = audioPlayer.getRoute(`sounds.${num}`); + if (!route) { + callback?.(); + return -1; + } else { + sleep(route.duration * 1000).then(() => callback?.()); + return num; + } + }; + control.prototype.stopSound = function (id) { + if (isNil(id)) { + soundPlayer.stopAllSounds(); + } else { + soundPlayer.stop(id); + } + }; + control.prototype.getPlayingSounds = function () { + return [...soundPlayer.playing]; + }; + //sound加载复写 + loader.prototype._loadOneSound_decodeData = function (name, data) { + if (data instanceof Blob) { + var blobReader = new zip.BlobReader(data); + blobReader.init(function () { + blobReader.readUint8Array(0, blobReader.size, function (uint8) { + //core.loader._loadOneSound_decodeData(name, uint8.buffer); + soundPlayer.add(name, uint8); + }); + }); + return; + } + if (data instanceof ArrayBuffer) { + const uint8 = new Uint8Array(data); + soundPlayer.add(name, uint8); + } + }; + //音量控制复写 + soundPlayer.setVolume( + core.musicStatus.userVolume * core.musicStatus.designVolume + ); + bgmController.setVolume( + core.musicStatus.userVolume * core.musicStatus.designVolume + ); + actions.prototype._clickSwitchs_sounds_userVolume = function (delta) { + var value = Math.round(Math.sqrt(100 * core.musicStatus.userVolume)); + if (value == 0 && delta < 0) return; + core.musicStatus.userVolume = core.clamp( + Math.pow(value + delta, 2) / 100, + 0, + 1 + ); + //audioContext 音效 不受designVolume 影响 + if (core.musicStatus.gainNode != null) + core.musicStatus.gainNode.gain.value = core.musicStatus.userVolume; + soundPlayer.setVolume( + core.musicStatus.userVolume * core.musicStatus.designVolume + ); + bgmController.setVolume( + core.musicStatus.userVolume * core.musicStatus.designVolume + ); + core.setLocalStorage("userVolume", core.musicStatus.userVolume); + core.playSound("确定"); + core.ui._drawSwitchs_sounds(); + }; + } } \ No newline at end of file diff --git a/project/sounds/floor.mp3 b/project/sounds/floor.mp3 index 96dc4fa3..2b24efbc 100644 Binary files a/project/sounds/floor.mp3 and b/project/sounds/floor.mp3 differ