jimp/browser/lib/jimp.min.js

An image processing library written entirely in JavaScript (i.e. zero external or native dependencies)

/*
Jimp v0.10.2
https://github.com/oliver-moran/jimp
Ported for the Web by Phil Seaton
MIT License

Copyright (c) 2018 Oliver Moran

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
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3*(e+r)/4-r}(0,i,a)),s=0,l=0<a?i-4:i;for(r=0;r<l;r+=4)e=u[t.charCodeAt(r)]<<18|u[t.charCodeAt(r+1)]<<12|u[t.charCodeAt(r+2)]<<6|u[t.charCodeAt(r+3)],o[s++]=e>>16&255,o[s++]=e>>8&255,o[s++]=255&e;2===a&&(e=u[t.charCodeAt(r)]<<2|u[t.charCodeAt(r+1)]>>4,o[s++]=255&e);1===a&&(e=u[t.charCodeAt(r)]<<10|u[t.charCodeAt(r+1)]<<4|u[t.charCodeAt(r+2)]>>2,o[s++]=e>>8&255,o[s++]=255&e);return o},r.fromByteArray=function(t){for(var e,r=t.length,n=r%3,i=[],a=0,o=r-n;a<o;a+=16383)i.push(l(t,a,o<a+16383?o:a+16383));1==n?(e=t[r-1],i.push(s[e>>2]+s[e<<4&63]+"==")):2==n&&(e=(t[r-2]<<8)+t[r-1],i.push(s[e>>10]+s[e>>4&63]+s[e<<2&63]+"="));return i.join("")};for(var s=[],u=[],f="undefined"!=typeof Uint8Array?Uint8Array:Array,n="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",i=0,a=n.length;i<a;++i)s[i]=n[i],u[n.charCodeAt(i)]=i;function h(t){var e=t.length;if(0<e%4)throw new Error("Invalid string. Length must be a multiple of 4");var r=t.indexOf("=");return-1===r&&(r=e),[r,r===e?0:4-r%4]}function l(t,e,r){for(var n,i,a=[],o=e;o<r;o+=3)n=(t[o]<<16&16711680)+(t[o+1]<<8&65280)+(255&t[o+2]),a.push(s[(i=n)>>18&63]+s[i>>12&63]+s[i>>6&63]+s[63&i]);return a.join("")}u["-".charCodeAt(0)]=62,u["_".charCodeAt(0)]=63},{}],29:[function(t,e,r){var n=t("./lib/encoder"),i=t("./lib/decoder");e.exports={encode:n,decode:i}},{"./lib/decoder":30,"./lib/encoder":31}],30:[function(t,n,e){(function(r){function e(t,e){if(this.pos=0,this.buffer=t,this.is_with_alpha=!!e,this.bottom_up=!0,this.flag=this.buffer.toString("utf-8",0,this.pos+=2),"BM"!=this.flag)throw new Error("Invalid BMP File");this.parseHeader(),this.parseRGBA()}e.prototype.parseHeader=function(){if(this.fileSize=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.reserved=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.offset=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.headerSize=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.width=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.height=this.buffer.readInt32LE(this.pos),this.pos+=4,this.planes=this.buffer.readUInt16LE(this.pos),this.pos+=2,this.bitPP=this.buffer.readUInt16LE(this.pos),this.pos+=2,this.compress=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.rawSize=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.hr=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.vr=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.colors=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.importantColors=this.buffer.readUInt32LE(this.pos),this.pos+=4,16===this.bitPP&&this.is_with_alpha&&(this.bitPP=15),this.bitPP<15){var t=0===this.colors?1<<this.bitPP:this.colors;this.palette=new Array(t);for(var e=0;e<t;e++){var r=this.buffer.readUInt8(this.pos++),n=this.buffer.readUInt8(this.pos++),i=this.buffer.readUInt8(this.pos++),a=this.buffer.readUInt8(this.pos++);this.palette[e]={red:i,green:n,blue:r,quad:a}}}this.height<0&&(this.height*=-1,this.bottom_up=!1)},e.prototype.parseRGBA=function(){var t="bit"+this.bitPP,e=this.width*this.height*4;this.data=new r(e),this[t]()},e.prototype.bit1=function(){var t=Math.ceil(this.width/8),e=t%4,r=0<=this.height?this.height-1:-this.height;for(r=this.height-1;0<=r;r--){for(var n=this.bottom_up?r:this.height-1-r,i=0;i<t;i++)for(var a=this.buffer.readUInt8(this.pos++),o=n*this.width*4+8*i*4,s=0;s<8&&8*i+s<this.width;s++){var l=this.palette[a>>7-s&1];this.data[o+4*s]=0,this.data[o+4*s+1]=l.blue,this.data[o+4*s+2]=l.green,this.data[o+4*s+3]=l.red}0!=e&&(this.pos+=4-e)}},e.prototype.bit4=function(){if(2==this.compress){this.data.fill(255);for(var r=0,t=this.bottom_up?this.height-1:0,e=!1;r<this.data.length;){var n=this.buffer.readUInt8(this.pos++),i=this.buffer.readUInt8(this.pos++);if(0==n){if(0==i){this.bottom_up?t--:t++,r=t*this.width*4,e=!1;continue}if(1==i)break;if(2==i){var a=this.buffer.readUInt8(this.pos++),o=this.buffer.readUInt8(this.pos++);this.bottom_up?t-=o:t+=o,r+=o*this.width*4+4*a}else{for(var s=this.buffer.readUInt8(this.pos++),l=0;l<i;l++)u.call(this,e?15&s:(240&s)>>4),1&l&&l+1<i&&(s=this.buffer.readUInt8(this.pos++)),e=!e;1==(i+1>>1&1)&&this.pos++}}else for(l=0;l<n;l++)u.call(this,e?15&i:(240&i)>>4),e=!e}function u(t){var e=this.palette[t];this.data[r]=0,this.data[r+1]=e.blue,this.data[r+2]=e.green,this.data[r+3]=e.red,r+=4}}else{var f=Math.ceil(this.width/2),h=f%4;for(o=this.height-1;0<=o;o--){var c=this.bottom_up?o:this.height-1-o;for(a=0;a<f;a++){i=this.buffer.readUInt8(this.pos++),r=c*this.width*4+2*a*4;var d=i>>4,p=15&i,b=this.palette[d];if(this.data[r]=0,this.data[r+1]=b.blue,this.data[r+2]=b.green,this.data[r+3]=b.red,2*a+1>=this.width)break;b=this.palette[p],this.data[r+4]=0,this.data[r+4+1]=b.blue,this.data[r+4+2]=b.green,this.data[r+4+3]=b.red}0!=h&&(this.pos+=4-h)}}},e.prototype.bit8=function(){if(1==this.compress){this.data.fill(255);for(var r=0,t=this.bottom_up?this.height-1:0;r<this.data.length;){var e=this.buffer.readUInt8(this.pos++),n=this.buffer.readUInt8(this.pos++);if(0==e){if(0==n){this.bottom_up?t--:t++,r=t*this.width*4;continue}if(1==n)break;if(2==n){var i=this.buffer.readUInt8(this.pos++),a=this.buffer.readUInt8(this.pos++);this.bottom_up?t-=a:t+=a,r+=a*this.width*4+4*i}else{for(var o=0;o<n;o++){var s=this.buffer.readUInt8(this.pos++);l.call(this,s)}!0&n&&this.pos++}}else for(o=0;o<e;o++)l.call(this,n)}function l(t){var e=this.palette[t];this.data[r]=0,this.data[r+1]=e.blue,this.data[r+2]=e.green,this.data[r+3]=e.red,r+=4}}else{var u=this.width%4;for(a=this.height-1;0<=a;a--){var f=this.bottom_up?a:this.height-1-a;for(i=0;i<this.width;i++){n=this.buffer.readUInt8(this.pos++),r=f*this.width*4+4*i;if(n<this.palette.length){var h=this.palette[n];this.data[r]=0,this.data[r+1]=h.blue,this.data[r+2]=h.green,this.data[r+3]=h.red}else this.data[r]=0,this.data[r+1]=255,this.data[r+2]=255,this.data[r+3]=255}0!=u&&(this.pos+=4-u)}}},e.prototype.bit15=function(){for(var t=this.width%3,e=parseInt("11111",2),r=this.height-1;0<=r;r--){for(var n=this.bottom_up?r:this.height-1-r,i=0;i<this.width;i++){var a=this.buffer.readUInt16LE(this.pos);this.pos+=2;var o=(a&e)/e*255|0,s=(a>>5&e)/e*255|0,l=(a>>10&e)/e*255|0,u=a>>15?255:0,f=n*this.width*4+4*i;this.data[f]=u,this.data[1+f]=o,this.data[2+f]=s,this.data[3+f]=l}this.pos+=t}},e.prototype.bit16=function(){var t=this.width%2*2;this.maskRed=31744,this.maskGreen=992,this.maskBlue=31,this.mask0=0,3==this.compress&&(this.maskRed=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.maskGreen=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.maskBlue=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.mask0=this.buffer.readUInt32LE(this.pos),this.pos+=4);for(var e=[0,0,0],r=0;r<16;r++)this.maskRed>>r&1&&e[0]++,this.maskGreen>>r&1&&e[1]++,this.maskBlue>>r&1&&e[2]++;e[1]+=e[0],e[2]+=e[1],e[0]=8-e[0],e[1]-=8,e[2]-=8;for(var n=this.height-1;0<=n;n--){for(var i=this.bottom_up?n:this.height-1-n,a=0;a<this.width;a++){var o=this.buffer.readUInt16LE(this.pos);this.pos+=2;var s=(o&this.maskBlue)<<e[0],l=(o&this.maskGreen)>>e[1],u=(o&this.maskRed)>>e[2],f=i*this.width*4+4*a;this.data[f]=0,this.data[1+f]=s,this.data[2+f]=l,this.data[3+f]=u}this.pos+=t}},e.prototype.bit24=function(){for(var t=this.height-1;0<=t;t--){for(var e=this.bottom_up?t:this.height-1-t,r=0;r<this.width;r++){var n=this.buffer.readUInt8(this.pos++),i=this.buffer.readUInt8(this.pos++),a=this.buffer.readUInt8(this.pos++),o=e*this.width*4+4*r;this.data[o]=0,this.data[1+o]=n,this.data[2+o]=i,this.data[3+o]=a}this.pos+=this.width%4}},e.prototype.bit32=function(){if(3==this.compress){this.maskRed=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.maskGreen=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.maskBlue=this.buffer.readUInt32LE(this.pos),this.pos+=4,this.mask0=this.buffer.readUInt32LE(this.pos),this.pos+=4;for(var t=this.height-1;0<=t;t--)for(var e=this.bottom_up?t:this.height-1-t,r=0;r<this.width;r++){var n=this.buffer.readUInt8(this.pos++),i=this.buffer.readUInt8(this.pos++),a=this.buffer.readUInt8(this.pos++),o=this.buffer.readUInt8(this.pos++),s=e*this.width*4+4*r;this.data[s]=n,this.data[s+1]=i,this.data[s+2]=a,this.data[s+3]=o}}else for(t=this.height-1;0<=t;t--)for(e=this.bottom_up?t:this.height-1-t,r=0;r<this.width;r++){i=this.buffer.readUInt8(this.pos++),a=this.buffer.readUInt8(this.pos++),o=this.buffer.readUInt8(this.pos++),n=this.buffer.readUInt8(this.pos++),s=e*this.width*4+4*r;this.data[s]=n,this.data[s+1]=i,this.data[s+2]=a,this.data[s+3]=o}},e.prototype.getData=function(){return this.data},n.exports=function(t){return new e(t)}}).call(this,t("buffer").Buffer)},{buffer:47}],31:[function(t,e,r){(function(s){function r(t){this.buffer=t.data,this.width=t.width,this.height=t.height,this.extraBytes=this.width%4,this.rgbSize=this.height*(3*this.width+this.extraBytes),this.headerInfoSize=40,this.data=[],this.flag="BM",this.reserved=0,this.offset=54,this.fileSize=this.rgbSize+this.offset,this.planes=1,this.bitPP=24,this.compress=0,this.hr=0,this.vr=0,this.colors=0,this.importantColors=0}r.prototype.encode=function(){var t=new s(this.offset+this.rgbSize);this.pos=0,t.write(this.flag,this.pos,2),this.pos+=2,t.writeUInt32LE(this.fileSize,this.pos),this.pos+=4,t.writeUInt32LE(this.reserved,this.pos),this.pos+=4,t.writeUInt32LE(this.offset,this.pos),this.pos+=4,t.writeUInt32LE(this.headerInfoSize,this.pos),this.pos+=4,t.writeUInt32LE(this.width,this.pos),this.pos+=4,t.writeInt32LE(-this.height,this.pos),this.pos+=4,t.writeUInt16LE(this.planes,this.pos),this.pos+=2,t.writeUInt16LE(this.bitPP,this.pos),this.pos+=2,t.writeUInt32LE(this.compress,this.pos),this.pos+=4,t.writeUInt32LE(this.rgbSize,this.pos),this.pos+=4,t.writeUInt32LE(this.hr,this.pos),this.pos+=4,t.writeUInt32LE(this.vr,this.pos),this.pos+=4,t.writeUInt32LE(this.colors,this.pos),this.pos+=4,t.writeUInt32LE(this.importantColors,this.pos),this.pos+=4;for(var e=0,r=3*this.width+this.extraBytes,n=0;n<this.height;n++){for(var i=0;i<this.width;i++){var a=this.pos+n*r+3*i;e++,t[a]=this.buffer[e++],t[a+1]=this.buffer[e++],t[a+2]=this.buffer[e++]}if(0<this.extraBytes){var o=this.pos+n*r+3*this.width;t.fill(0,o,o+this.extraBytes)}}return t},e.exports=function(t,e){return void 0===e&&(e=100),{data:new r(t).encode(),width:t.width,height:t.height}}}).call(this,t("buffer").Buffer)},{buffer:47}],32:[function(t,e,r){},{}],33:[function(n,t,c){(function(u,f){"use strict";var h=n("assert"),a=n("pako/lib/zlib/zstream"),o=n("pako/lib/zlib/deflate.js"),s=n("pako/lib/zlib/inflate.js"),t=n("pako/lib/zlib/constants");for(var e in t)c[e]=t[e];c.NONE=0,c.DEFLATE=1,c.INFLATE=2,c.GZIP=3,c.GUNZIP=4,c.DEFLATERAW=5,c.INFLATERAW=6,c.UNZIP=7;function r(t){if("number"!=typeof t||t<c.DEFLATE||t>c.UNZIP)throw new TypeError("Bad argument");this.dictionary=null,this.err=0,this.flush=0,this.init_done=!1,this.level=0,this.memLevel=0,this.mode=t,this.strategy=0,this.windowBits=0,this.write_in_progress=!1,this.pending_close=!1,this.gzip_id_bytes_read=0}r.prototype.close=function(){this.write_in_progress?this.pending_close=!0:(this.pending_close=!1,h(this.init_done,"close before init"),h(this.mode<=c.UNZIP),this.mode===c.DEFLATE||this.mode===c.GZIP||this.mode===c.DEFLATERAW?o.deflateEnd(this.strm):this.mode!==c.INFLATE&&this.mode!==c.GUNZIP&&this.mode!==c.INFLATERAW&&this.mode!==c.UNZIP||s.inflateEnd(this.strm),this.mode=c.NONE,this.dictionary=null)},r.prototype.write=function(t,e,r,n,i,a,o){return this._write(!0,t,e,r,n,i,a,o)},r.prototype.writeSync=function(t,e,r,n,i,a,o){return this._write(!1,t,e,r,n,i,a,o)},r.prototype._write=function(t,e,r,n,i,a,o,s){if(h.equal(arguments.length,8),h(this.init_done,"write before init"),h(this.mode!==c.NONE,"already finalized"),h.equal(!1,this.write_in_progress,"write already in progress"),h.equal(!1,this.pending_close,"close is pending"),this.write_in_progress=!0,h.equal(!1,void 0===e,"must provide flush value"),this.write_in_progress=!0,e!==c.Z_NO_FLUSH&&e!==c.Z_PARTIAL_FLUSH&&e!==c.Z_SYNC_FLUSH&&e!==c.Z_FULL_FLUSH&&e!==c.Z_FINISH&&e!==c.Z_BLOCK)throw new Error("Invalid flush value");if(null==r&&(r=f.alloc(0),n=i=0),this.strm.avail_in=i,this.strm.input=r,this.strm.next_in=n,this.strm.avail_out=s,this.strm.output=a,this.strm.next_out=o,this.flush=e,!t)return this._process(),this._checkError()?this._afterSync():void 0;var l=this;return u.nextTick(function(){l._process(),l._after()}),this},r.prototype._afterSync=function(){var t=this.strm.avail_out,e=this.strm.avail_in;return this.write_in_progress=!1,[e,t]},r.prototype._process=function(){var t=null;switch(this.mode){case c.DEFLATE:case c.GZIP:case c.DEFLATERAW:this.err=o.deflate(this.strm,this.flush);break;case c.UNZIP:switch(0<this.strm.avail_in&&(t=this.strm.next_in),this.gzip_id_bytes_read){case 0:if(null===t)break;if(31!==this.strm.input[t]){this.mode=c.INFLATE;break}if(t++,(this.gzip_id_bytes_read=1)===this.strm.avail_in)break;case 1:if(null===t)break;139===this.strm.input[t]?(this.gzip_id_bytes_read=2,this.mode=c.GUNZIP):this.mode=c.INFLATE;break;default:throw new Error("invalid number of gzip magic number bytes read")}case c.INFLATE:case c.GUNZIP:case c.INFLATERAW:for(this.err=s.inflate(this.strm,this.flush),this.err===c.Z_NEED_DICT&&this.dictionary&&(this.err=s.inflateSetDictionary(this.strm,this.dictionary),this.err===c.Z_OK?this.err=s.inflate(this.strm,this.flush):this.err===c.Z_DATA_ERROR&&(this.err=c.Z_NEED_DICT));0<this.strm.avail_in&&this.mode===c.GUNZIP&&this.err===c.Z_STREAM_END&&0!==this.strm.next_in[0];)this.reset(),this.err=s.inflate(this.strm,this.flush);break;default:throw new Error("Unknown mode "+this.mode)}},r.prototype._checkError=function(){switch(this.err){case c.Z_OK:case c.Z_BUF_ERROR:if(0!==this.strm.avail_out&&this.flush===c.Z_FINISH)return this._error("unexpected end of file"),!1;break;case c.Z_STREAM_END:break;case c.Z_NEED_DICT:return null==this.dictionary?this._error("Missing dictionary"):this._error("Bad dictionary"),!1;default:return this._error("Zlib error"),!1}return!0},r.prototype._after=function(){if(this._checkError()){var t=this.strm.avail_out,e=this.strm.avail_in;this.write_in_progress=!1,this.callback(e,t),this.pending_close&&this.close()}},r.prototype._error=function(t){this.strm.msg&&(t=this.strm.msg),this.onerror(t,this.err),this.write_in_progress=!1,this.pending_close&&this.close()},r.prototype.init=function(t,e,r,n,i){h(4===arguments.length||5===arguments.length,"init(windowBits, level, memLevel, strategy, [dictionary])"),h(8<=t&&t<=15,"invalid windowBits"),h(-1<=e&&e<=9,"invalid compression level"),h(1<=r&&r<=9,"invalid memlevel"),h(n===c.Z_FILTERED||n===c.Z_HUFFMAN_ONLY||n===c.Z_RLE||n===c.Z_FIXED||n===c.Z_DEFAULT_STRATEGY,"invalid strategy"),this._init(e,t,r,n,i),this._setDictionary()},r.prototype.params=function(){throw new Error("deflateParams Not supported")},r.prototype.reset=function(){this._reset(),this._setDictionary()},r.prototype._init=function(t,e,r,n,i){switch(this.level=t,this.windowBits=e,this.memLevel=r,this.strategy=n,this.flush=c.Z_NO_FLUSH,this.err=c.Z_OK,this.mode!==c.GZIP&&this.mode!==c.GUNZIP||(this.windowBits+=16),this.mode===c.UNZIP&&(this.windowBits+=32),this.mode!==c.DEFLATERAW&&this.mode!==c.INFLATERAW||(this.windowBits=-1*this.windowBits),this.strm=new a,this.mode){case c.DEFLATE:case c.GZIP:case c.DEFLATERAW:this.err=o.deflateInit2(this.strm,this.level,c.Z_DEFLATED,this.windowBits,this.memLevel,this.strategy);break;case c.INFLATE:case c.GUNZIP:case c.INFLATERAW:case c.UNZIP:this.err=s.inflateInit2(this.strm,this.windowBits);break;default:throw new Error("Unknown mode "+this.mode)}this.err!==c.Z_OK&&this._error("Init 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