plexpy/data/interfaces/default/js/blurhash_pure_js_port.min.js

const blurhash=function(t){const e=["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","#","$","%","*","+",",","-",".",":",";","=","?","@","[","]","^","_","{","|","}","~"],a=t=>{let a=0;for(let r=0;r<t.length;r++){const o=t[r];a=83*a+e.indexOf(o)}return a},r=(t,a)=>{var r="";for(let o=1;o<=a;o++){let h=Math.floor(t)/Math.pow(83,a-o)%83;r+=e[Math.floor(h)]}return r},o=t=>{let e=t/255;return e<=.04045?e/12.92:Math.pow((e+.055)/1.055,2.4)},h=t=>{let e=Math.max(0,Math.min(1,t));return e<=.0031308?Math.round(12.92*e*255+.5):Math.round(255*(1.055*Math.pow(e,1/2.4)-.055)+.5)},n=(t,e)=>(t=>t<0?-1:1)(t)*Math.pow(Math.abs(t),e),l=t=>{if(!t||t.length<6)throw new Error("The blurhash string must be at least 6 characters");const e=a(t[0]),r=Math.floor(e/9)+1,o=e%9+1;if(t.length!==4+2*o*r)throw new Error(`blurhash length mismatch: length is ${t.length} but it should be ${4+2*o*r}`)},s=t=>{const e=t>>8&255,a=255&t;return[o(t>>16),o(e),o(a)]},m=(t,e)=>{const a=Math.floor(t/361),r=Math.floor(t/19)%19,o=t%19;return[n((a-9)/9,2)*e,n((r-9)/9,2)*e,n((o-9)/9,2)*e]},c=(t,e,a,r)=>{let h=0,n=0,l=0;const s=4*e;for(let m=0;m<e;m++)for(let e=0;e<a;e++){const a=r(m,e);h+=a*o(t[4*m+0+e*s]),n+=a*o(t[4*m+1+e*s]),l+=a*o(t[4*m+2+e*s])}let m=1/(e*a);return[h*m,n*m,l*m]};return t.decodePromise=((e,a,r,o=1)=>new Promise((h,n)=>{h(t.decode(e,a,r,o))})),t.decode=((t,e,r,o=1)=>{l(t),o|=1;const n=a(t[0]),c=Math.floor(n/9)+1,i=n%9+1,M=(a(t[1])+1)/166,g=new Array(i*c);for(let e=0;e<g.length;e++)if(0===e){const r=a(t.substring(2,6));g[e]=s(r)}else{const r=a(t.substring(4+2*e,6+2*e));g[e]=m(r,M*o)}const f=4*e,d=new Uint8ClampedArray(f*r);for(let t=0;t<r;t++)for(let a=0;a<e;a++){let o=0,n=0,l=0;for(let h=0;h<c;h++)for(let s=0;s<i;s++){const m=Math.cos(Math.PI*a*s/e)*Math.cos(Math.PI*t*h/r);let c=g[s+h*i];o+=c[0]*m,n+=c[1]*m,l+=c[2]*m}let s=h(o),m=h(n),M=h(l);d[4*a+0+t*f]=s,d[4*a+1+t*f]=m,d[4*a+2+t*f]=M,d[4*a+3+t*f]=255}return d}),t.encodePromise=((e,a,r,o,h)=>new Promise((n,l)=>{n(t.encode(e,a,r,o,h))})),t.encode=((t,e,a,o,l)=>{if(o<1||o>9||l<1||l>9)throw new Error("BlurHash must have between 1 and 9 components");if(e*a*4!==t.length)throw new Error("Width and height must match the pixels array");let s=[];for(let r=0;r<l;r++)for(let h=0;h<o;h++){const o=0==h&&0==r?1:2,n=c(t,e,a,(t,n)=>o*Math.cos(Math.PI*h*t/e)*Math.cos(Math.PI*r*n/a));s.push(n)}const m=s[0],i=s.slice(1);let M,g="";if(g+=r(o-1+9*(l-1),1),i.length>0){let t=Math.max(...i.map(t=>Math.max(...t))),e=Math.floor(Math.max(0,Math.min(82,Math.floor(166*t-.5))));M=(e+1)/166,g+=r(e,1)}else M=1,g+=r(0,1);return g+=r((t=>{return(h(t[0])<<16)+(h(t[1])<<8)+h(t[2])})(m),4),i.forEach(t=>{g+=r(((t,e)=>{return 19*Math.floor(Math.max(0,Math.min(18,Math.floor(9*n(t[0]/e,.5)+9.5))))*19+19*Math.floor(Math.max(0,Math.min(18,Math.floor(9*n(t[1]/e,.5)+9.5))))+Math.floor(Math.max(0,Math.min(18,Math.floor(9*n(t[2]/e,.5)+9.5))))})(t,M),2)}),g}),t.getImageData=(t=>{const e=t.width,a=t.height,r=document.createElement("canvas"),o=r.getContext("2d");return r.width=e,r.height=a,o.width=e,o.height=a,o.drawImage(t,0,0),o.getImageData(0,0,e,a).data}),t.drawImageDataOnNewCanvas=((t,e,a)=>{const r=document.createElement("canvas"),o=r.getContext("2d");return r.width=e,r.height=a,o.width=e,o.height=a,o.putImageData(new ImageData(t,e,a),0,0),r}),t.getImageDataAsImageWithOnloadPromise=((e,a,r)=>new Promise((o,h)=>{t.getImageDataAsImage(e,a,r,(t,e)=>{o(e)})})),t.getImageDataAsImage=((e,a,r,o)=>{const h=t.drawImageDataOnNewCanvas(e,a,r).toDataURL(),n=new Image(a,r);return n.onload=(t=>o(t,n)),n.width=a,n.height=r,n.src=h,n}),t}({});