@webav/av-cliper/dist/av-cliper.umd.cjs

WebCodecs-based, combine video, audio, images, text, with animation support 基于 WebCodecs 合成 视频、音频、图片、文字，支持动画

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o=a.slice(0,i===0?a.length:i).map(l=>({...l}));for(let l=e;l<o.length;l++){const f=o[l];t<f.cts&&(f.deleted=!0,f.cts=-1)}Ne(o);const c=a.slice(r.is_idr?s:e).map(l=>({...l,cts:l.cts-t}));for(const l of c)l.cts<0&&(l.deleted=!0,l.cts=-1);return Ne(c),[o,c]}function Wi(a,t){if(a.length===0)return[];let e=-1;for(let r=0;r<a.length;r++){const o=a[r];if(!(t>o.cts)){e=r;break}}if(e===-1)throw Error("Not found audio sample by time");const i=a.slice(0,e).map(r=>({...r})),s=a.slice(e).map(r=>({...r,cts:r.cts-t}));return[i,s]}function Ve(a,t,e){let i=0;if(a.state==="configured"){for(;i<t.length;i++)a.decode(t[i]);a.flush().catch(s=>{if(!(s instanceof Error))throw s;if(s.message.includes("Decoding error")&&e.onDecodingError!=null){e.onDecodingError(s);return}if(!s.message.includes("Aborted due to close"))throw s})}}function ji(a,t){if(t!=="avc1"&&t!=="hvc1")return 0;const e=new DataView(a.buffer);let i=0;for(;i<a.byteLength-4;){if(t==="avc1"&&(e.getUint8(i+4)&31)===5)return i;if(t==="hvc1"){const s=e.getUint8(i+4)>>1&63;if(s===19||s===20)return i}i+=e.getUint32(i)+4}return-1}async function Xi(a,t,e,i,s,r){const o=await t.createReader(),c=await ai(a.filter(u=>!u.deleted&&u.is_sync&&u.cts>=s.start&&u.cts<=s.end),o);if(c.length===0||i.aborted)return;let l=0;Ve(f(),c,{onDecodingError:u=>{y.Log.warn("thumbnailsByKeyFrame",u),l===0?Ve(f(!0),c,{onDecodingError:w=>{o.close(),y.Log.error("thumbnailsByKeyFrame retry soft deocde",w)}}):(r(null,!0),o.close())}});function f(u=!1){const w={...e,...u?{hardwareAcceleration:"prefer-software"}:{}},p=new VideoDecoder({output:C=>{l+=1;const m=l===c.length;r(C,m),m&&(o.close(),p.state!=="closed"&&p.close())},error:C=>{const m=`thumbnails decoder error: ${C.message}, config: ${JSON.stringify(w)}, state: ${JSON.stringify({qSize:p.decodeQueueSize,state:p.state,outputCnt:l,inputCnt:c.length})}`;throw y.Log.error(m),Error(m)}});return i.addEventListener("abort",()=>{o.close(),p.state!=="closed"&&p.close()}),p.configure(w),p}}function Ne(a){let t=0,e=null;for(const i of a)if(!i.deleted){if(i.is_sync&&(t+=1),t>=2)break;(e==null||i.cts<e.cts)&&(e=i)}e!=null&&e.cts<2e5&&(e.duration+=e.cts,e.cts=0)}function ri(){try{const a=performance.memory;return{jsHeapSizeLimit:a.jsHeapSizeLimit,totalJSHeapSize:a.totalJSHeapSize,usedJSHeapSize:a.usedJSHeapSize,percentUsed:(a.usedJSHeapSize/a.jsHeapSizeLimit).toFixed(3),percentTotal:(a.totalJSHeapSize/a.jsHeapSizeLimit).toFixed(3)}}catch{return{}}}const kt=class kt{constructor(t){d(this,Re);k(this,"ready");d(this,D,{duration:0,width:0,height:0});d(this,V,null);d(this,F,[]);k(this,"tickInterceptor",async(t,e)=>e);const e=i=>(h(this,V,i),n(this,D).width=i.width,n(this,D).height=i.height,n(this,D).duration=1/0,{...n(this,D)});if(t instanceof ReadableStream)this.ready=new Response(t).blob().then(i=>createImageBitmap(i)).then(e);else if(t instanceof ImageBitmap)this.ready=Promise.resolve(e(t));else if(Array.isArray(t)&&t.every(i=>i instanceof VideoFrame)){h(this,F,t);const 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e=Math.ceil(t/1e6*I.sampleRate),i=new st(this.getPCMData().map(r=>r.slice(0,e)),n(this,U)),s=new st(this.getPCMData().map(r=>r.slice(e)),n(this,U));return[i,s]}async clone(){await this.ready;const t=new st(this.getPCMData(),n(this,U));return await t.ready,t}destroy(){h(this,nt,new Float32Array(0)),h(this,ht,new Float32Array(0)),y.Log.info("---- audioclip destroy ----")}};It=new WeakMap,nt=new WeakMap,ht=new WeakMap,U=new WeakMap,Fe=new WeakSet,wi=async function(t){st.ctx==null&&(st.ctx=new AudioContext({sampleRate:I.sampleRate}));const e=performance.now(),i=t instanceof ReadableStream?await Gi(t,st.ctx):t;y.Log.info("Audio clip decoded complete:",performance.now()-e);const s=n(this,U).volume;if(s!==1)for(const r of i)for(let o=0;o<r.length;o+=1)r[o]*=s;n(this,It).duration=i[0].length/I.sampleRate*1e6,h(this,nt,i[0]),h(this,ht,i[1]??n(this,nt)),y.Log.info("Audio clip convert to AudioData, time:",performance.now()-e)},dt=new WeakMap,Y=new WeakMap,k(st,"ctx",null);let He=st;async function Gi(a,t){const e=await new Response(a).arrayBuffer();return De(await t.decodeAudioData(e))}const Ee=class Ee{constructor(t){k(this,"ready");d(this,Rt,{duration:0,width:0,height:0});d(this,re,()=>{});k(this,"audioTrack");d(this,$t,null);d(this,Ht);h(this,Ht,t),this.audioTrack=t.getAudioTracks()[0]??null,n(this,Rt).duration=1/0;const e=t.getVideoTracks()[0];e!=null?(e.contentHint="motion",this.ready=new Promise(i=>{h(this,re,Ji(e,s=>{n(this,Rt).width=s.width,n(this,Rt).height=s.height,h(this,$t,s),i(this.meta)}))})):this.ready=Promise.resolve(this.meta)}get meta(){return{...n(this,Rt)}}async tick(){return{video:n(this,$t)==null?null:await createImageBitmap(n(this,$t)),audio:[],state:"success"}}async split(){return[await this.clone(),await this.clone()]}async clone(){return new Ee(n(this,Ht).clone())}destroy(){n(this,Ht).getTracks().forEach(t=>t.stop()),n(this,re).call(this)}};Rt=new WeakMap,re=new WeakMap,$t=new WeakMap,Ht=new WeakMap,k(Ee,"ctx",null);let We=Ee;function Ji(a,t){let 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r.decode(b)).map(qe),T=Ii(v),A=C(T[0].length),R=b[0];o==null||o.encode(Ze([T,A]),R.cts/R.timescale*1e6)}return i}const sn=`#version 300 es
  layout (location = 0) in vec4 a_position;
  layout (location = 1) in vec2 a_texCoord;
  out vec2 v_texCoord;
  void main () {
    gl_Position = a_position;
    v_texCoord = a_texCoord;
  }
`,an=`#version 300 es
precision mediump float;
out vec4 FragColor;
in vec2 v_texCoord;

uniform sampler2D frameTexture;
uniform vec3 keyColor;

// 色度的相似度计算
uniform float similarity;
// 透明度的平滑度计算
uniform float smoothness;
// 降低绿幕饱和度，提高抠图准确度
uniform float spill;

vec2 RGBtoUV(vec3 rgb) {
  return vec2(
    rgb.r * -0.169 + rgb.g * -0.331 + rgb.b *  0.5    + 0.5,
    rgb.r *  0.5   + rgb.g * -0.419 + rgb.b * -0.081  + 0.5
  );
}

void main() {
  // 获取当前像素的rgba值
  vec4 rgba = texture(frameTexture, v_texCoord);
  // 计算当前像素与绿幕像素的色度差值
  vec2 chromaVec = RGBtoUV(rgba.rgb) - RGBtoUV(keyColor);
  // 计算当前像素与绿幕像素的色度距离（向量长度）, 越相像则色度距离越小
  float chromaDist = sqrt(dot(chromaVec, chromaVec));
  // 设置了一个相似度阈值，baseMask为负，则表明是绿幕，为正则表明不是绿幕
  float baseMask = chromaDist - similarity;
  // 如果baseMask为负数，fullMask等于0；baseMask为正数，越大，则透明度越低
  float fullMask = pow(clamp(baseMask / smoothness, 0., 1.), 1.5);
  rgba.a = fullMask; // 设置透明度
  // 如果baseMask为负数，spillVal等于0；baseMask为整数，越小，饱和度越低
  float spillVal = pow(clamp(baseMask / spill, 0., 1.), 1.5);
  float desat = clamp(rgba.r * 0.2126 + rgba.g * 0.7152 + rgba.b * 0.0722, 0., 1.); // 计算当前像素的灰度值
  rgba.rgb = mix(vec3(desat, desat, desat), rgba.rgb, spillVal);
  FragColor = rgba;
}
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r.angle=this.angle,r.fixedAspectRatio=this.fixedAspectRatio,r.fixedScaleCenter=this.fixedScaleCenter,r}checkHit(t,e){var g,b;let{angle:i,center:s,x:r,y:o,w:c,h:l}=this;const f=((g=n(this,ft))==null?void 0:g.center)??s,u=((b=n(this,ft))==null?void 0:b.angle)??i;n(this,ft)==null&&(r=r-f.x,o=o-f.y);const w=t-f.x,p=e-f.y;let C=w,m=p;return u!==0&&(C=w*Math.cos(u)+p*Math.sin(u),m=p*Math.cos(u)-w*Math.sin(u)),!(C<r||C>r+c||m<o||m>o+l)}};he=new WeakMap,de=new WeakMap,ue=new WeakMap,fe=new WeakMap,me=new WeakMap,pe=new WeakMap,ut=new WeakSet,Ut=function(t,e){const i=this[t]!==e;switch(t){case"x":h(this,de,e);break;case"y":h(this,ue,e);break;case"w":h(this,fe,e);break;case"h":h(this,me,e);break;case"angle":h(this,pe,e);break}i&&n(this,he).emit("propsChange",{[t]:e})},ft=new WeakMap;let Te=Je;class di{constructor(){k(this,"rect",new Te);d(this,we,{offset:0,duration:0,playbackRate:1});d(this,Ft,new y.EventTool);k(this,"on",n(this,Ft).on);d(this,Wt,0);k(this,"opacity",1);k(this,"flip",null);d(this,mt,null);d(this,Z,null);k(this,"ready",Promise.resolve());this.rect.on("propsChange",t=>{n(this,Ft).emit("propsChange",{rect:t})})}get time(){return n(this,we)}set time(t){Object.assign(n(this,we),t)}get zIndex(){return n(this,Wt)}set zIndex(t){const e=n(this,Wt)!==t;h(this,Wt,t),e&&n(this,Ft).emit("propsChange",{zIndex:t})}_render(t){const{rect:{center:e,angle:i}}=this;t.setTransform(this.flip==="horizontal"?-1:1,0,0,this.flip==="vertical"?-1:1,e.x,e.y),t.rotate((this.flip==null?1:-1)*i),t.globalAlpha=this.opacity}setAnimation(t,e){h(this,mt,Object.entries(t).map(([i,s])=>{const r={from:0,to:100}[i]??Number(i.slice(0,-1));if(isNaN(r)||r>100||r<0)throw Error("keyFrame must between 0~100");return[r/100,s]})),h(this,Z,Object.assign({},n(this,Z),{duration:e.duration,delay:e.delay??0,iterCount:e.iterCount??1/0}))}animate(t){if(n(this,mt)==null||n(this,Z)==null||t<n(this,Z).delay)return;const e=pn(t,n(this,mt),n(this,Z));for(const i in e)switch(i){case"opacity":this.opacity=e[i];break;case"x":case"y":case"w":case"h":case"angle":this.rect[i]=e[i];break}}copyStateTo(t){h(t,mt,n(this,mt)),h(t,Z,n(this,Z)),t.zIndex=this.zIndex,t.opacity=this.opacity,t.flip=this.flip,t.rect=this.rect.clone(),t.time={...this.time}}destroy(){n(this,Ft).destroy()}}we=new WeakMap,Ft=new WeakMap,Wt=new WeakMap,mt=new WeakMap,Z=new WeakMap;function pn(a,t,e){const i=a-e.delay;if(i/e.duration>=e.iterCount)return{};const s=i%e.duration,r=i===e.duration?1:s/e.duration,o=t.findIndex(C=>C[0]>=r);if(o===-1)return{};const c=t[o-1],l=t[o],f=l[1];if(c==null)return f;const u=c[1],w={},p=(r-c[0])/(l[0]-c[0]);for(const C in f){const m=C;u[m]!=null&&(w[m]=(f[m]-u[m])*p+u[m])}return w}const Ue=class Ue extends di{constructor(e){super();d(this,Et);d(this,pt,null);d(this,ye,!1);h(this,Et,e),this.ready=e.ready.then(({width:i,height:s,duration:r})=>{this.rect.w=this.rect.w===0?i:this.rect.w,this.rect.h=this.rect.h===0?s:this.rect.h,this.time.duration=this.time.duration===0?r:this.time.duration})}async offscreenRender(e,i){var p;const s=i*this.time.playbackRate;this.animate(s),super._render(e);const{w:r,h:o}=this.rect,{video:c,audio:l,state:f}=await n(this,Et).tick(s);let u=l??[];if(l!=null&&this.time.playbackRate!==1&&(u=l.map(C=>ti(C,this.time.playbackRate))),f==="d