// From Brandon Jones' awesome WebGL texture utils,
// https://github.com/toji/webgl-texture-utils
// which in turn based off of Evan Parker's cool work,
// http://www-cs-students.stanford.edu/~eparker/files/crunch/decode_test.html
//
// This combines crunch-worker.js and crn_decomp.js. Minor changes
// to make it work that way, and to return all levels in one array

    /*
     * Copyright (c) 2012 Brandon Jones
     *
     * This software is provided 'as-is', without any express or implied
     * warranty. In no event will the authors be held liable for any damages
     * arising from the use of this software.
     *
     * Permission is granted to anyone to use this software for any purpose,
     * including commercial applications, and to alter it and redistribute it
     * freely, subject to the following restrictions:
     *
     *    1. The origin of this software must not be misrepresented; you must not
     *    claim that you wrote the original software. If you use this software
     *    in a product, an acknowledgment in the product documentation would be
     *    appreciated but is not required.
     *
     *    2. Altered source versions must be plainly marked as such, and must not
     *    be misrepresented as being the original software.
     *
     *    3. This notice may not be removed or altered from any source
     *    distribution.
     */

    // Taken from crnlib.h
    var cCRNFmtInvalid = -1;

    var cCRNFmtDXT1 = 0;
    var cCRNFmtDXT3 = 1;
    var cCRNFmtDXT5 = 2;

    // Various DXT5 derivatives
    var cCRNFmtDXT5_CCxY = 3;    // Luma-chroma
    var cCRNFmtDXT5_xGxR = 4;    // Swizzled 2-component
    var cCRNFmtDXT5_xGBR = 5;    // Swizzled 3-component
    var cCRNFmtDXT5_AGBR = 6;    // Swizzled 4-component

    // ATI 3DC and X360 DXN
    var cCRNFmtDXN_XY = 7;
    var cCRNFmtDXN_YX = 8;

    // DXT5 alpha blocks only
    var cCRNFmtDXT5A = 9;

    function arrayBufferCopy(src, dst, dstByteOffset, numBytes) {
        dst.set(src.subarray(0, numBytes), dstByteOffset);
    }

    function deCrunch(bytes, filename) {
        var srcSize = bytes.length;
        var src = Module._malloc(srcSize),
            format, internalFormat, dst, dstSize,
            width, height, levels, dxtData, rgb565Data, i;
        
        arrayBufferCopy(bytes, Module.HEAPU8, src, srcSize);

        format = Module._crn_get_dxt_format(src, srcSize);
        
        if(format != cCRNFmtDXT1 && format != cCRNFmtDXT3 && format != cCRNFmtDXT5) {
            throw "Unsupported image format " + format + " for " + filename;
        }
        width = Module._crn_get_width(src, srcSize);
        height = Module._crn_get_height(src, srcSize);
        levels = Module._crn_get_levels(src, srcSize);
        dstSize = Module._crn_get_uncompressed_size(src, srcSize, 0);
        dst = Module._malloc(dstSize);

        var totalSize = 0;
        var bytesPerPixel = format == cCRNFmtDXT1 ? 0.5 : 1;
        for(i = 0; i < levels; ++i) {
            totalSize += width * height * bytesPerPixel;
            width *= 0.5;
            height *= 0.5;
            width = Math.max(width, 4);
            height = Math.max(height, 4);
        }

        width = Module._crn_get_width(src, srcSize);
        height = Module._crn_get_height(src, srcSize);

        var ret = new Uint8Array(totalSize);
        var retIndex = 0;

        for(i = 0; i < levels; ++i) {
            if(i) {
                dstSize = Module._crn_get_uncompressed_size(src, srcSize, i);
            }
            Module._crn_decompress(src, srcSize, dst, dstSize, i);
            ret.set(Module.HEAPU8.subarray(dst, dst+dstSize), retIndex);
            retIndex += dstSize;

            width *= 0.5;
            height *= 0.5;
        }
        
        Module._free(src);
        Module._free(dst);

        return ret;
    }

    //===
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d=x+32>>2,S=b+268|0,Q=y[S+4>>2],H=y[b+88>>2],J=Nc(H+63|0);y[r]=0;y[u]=0;y[w]=0;y[s]=0;var H=Pc(H+17|0),K=(H|0)==0;a:do{if(!K){for(var E=(i|0)==0,da=i-1|0,N=(h&1|0)==0,ka=e<<1,ba=b+92|0,ra=b+116|0,ia=b+212|0,fa=b+284|0,Ga=b+164|0,ta=j-1|0,la=ta<<5,Aa=(g&1|0)!=0,xa=0,Y=1;;){b:do{if(E){var ma=Y}else{for(var ga=y[c+(xa<<2)>>2],ua=0,Ba=Y;;){if((ua&1|0)==0){var Ca=ga,va=32,Z=1,sa=j,T=0}else{Ca=ga+la|0;va=-32;sa=Z=-1;T=ta}var ea=N|(ua|0)!=(da|0),W=(T|0)==(sa|0);c:do{if(W){var ya=Ba}else{for(var L=Ba,O=Ca,qa=T;;){var na=(L|0)==1?R(ba,ra)|512:L,L=na&7,na=na>>>3;m=z[M.f+L|0]&255;for(var U=0,P=y[r];;){var F=R(ba,Ga);y[r]=P+F|0;td(x,Q);P=C[r];F=wd(S,P);y[(U<<2>>2)+t]=A[F>>1]&65535;U=U+1|0;if(U>>>0>=m>>>0){break}}U=0;for(P=y[w];;){F=R(ba,Ga);y[w]=P+F|0;td(B,Q);P=C[w];F=wd(S,P);y[(U<<2>>2)+d]=A[F>>1]&65535;U=U+1|0;if(U>>>0>=m>>>0){break}}U=(qa|0)==(ta|0)&Aa;P=O;m=P>>2;for(F=0;;){var oa=(F|0)==0|ea;f=F<<1;k=R(ba,ia);y[u]=y[u]+k|0;td(p,J);k=R(ba,ia);y[s]=y[s]+k|0;td(I,J);if(oa){var wa=P,ca=z[(L<<2)+vd+f|0]&255;o=wd(fa,y[u]*3|0)>>1;k=wd(fa,y[s]*3|0)>>1;y[wa>>2]=(A[o]&65535)<<16|y[(ca<<2>>2)+t];y[m+1]=(A[o+2]&65535)<<16|A[o+1]&65535;y[m+2]=(A[k]&65535)<<16|y[(ca<<2>>2)+d];y[m+3]=(A[k+2]&65535)<<16|A[k+1]&65535}k=R(ba,ia);y[u]=y[u]+k|0;td(p,J);k=R(ba,ia);y[s]=y[s]+k|0;td(I,J);if(!(U|oa^1)){oa=P+16|0;o=z[(L<<2)+vd+(f|1)|0]&255;k=wd(fa,y[u]*3|0)>>1;f=wd(fa,y[s]*3|0)>>1;y[oa>>2]=(A[k]&65535)<<16|y[(o<<2>>2)+t];y[m+5]=(A[k+2]&65535)<<16|A[k+1]&65535;y[m+6]=(A[f]&65535)<<16|y[(o<<2>>2)+d];y[m+7]=(A[f+2]&65535)<<16|A[f+1]&65535}F=F+1|0;if((F|0)==2){break}P=P+e|0;m=P>>2}qa=qa+Z|0;if((qa|0)==(sa|0)){ya=na;break c}L=na;O=O+va|0}}}while(0);ua=ua+1|0;if((ua|0)==(i|0)){ma=ya;break b}ga=ga+ka|0;Ba=ya}}}while(0);xa=xa+1|0;if((xa|0)==(H|0)){break a}Y=ma}}}while(0);q=x;return 1}id.X=1;function wd(b,c){C[b+4>>2]>>>0>c>>>0||xc(M.g|0,904);return(c<<1)+y[b>>2]|0}function ud(b,c){C[b+4>>2]>>>0>c>>>0||xc(M.g|0,904);return(c<<2)+y[b>>2]|0}function xd(b,c){var d;d=(b+4|0)>>2;var 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N=R(f,d),ka=da<<1,ba=(ka<<2)+h|0;y[ba>>2]=y[ba>>2]+y[e+(N<<2)>>2]&7;ka=((ka|1)<<2)+h|0;y[ka>>2]=y[ka>>2]+y[g+(N<<2)>>2]&7;da=da+1|0;if((da|0)==8){break}}gb[c]=(z[M.a+y[m>>2]|0]&255)<<3|z[M.a+y[o>>2]|0]&255|(z[M.a+y[k>>2]|0]&255)<<6|(z[M.a+y[t>>2]|0]&255)<<9|(z[M.a+y[s>>2]|0]&255)<<12|(z[M.a+y[w>>2]|0]&255)<<15;gb[c+1]=(z[M.a+y[u>>2]|0]&255)<<2|(z[M.a+y[w>>2]|0]&255)>>>1|(z[M.a+y[r>>2]|0]&255)<<5|(z[M.a+y[x>>2]|0]&255)<<8|(z[M.a+y[p>>2]|0]&255)<<11|(z[M.a+y[B>>2]|0]&255)<<14;gb[c+2]=(z[M.a+y[I>>2]|0]&255)<<1|(z[M.a+y[B>>2]|0]&255)>>>2|(z[M.a+y[S>>2]|0]&255)<<4|(z[M.a+y[Q>>2]|0]&255)<<7|(z[M.a+y[H>>2]|0]&255)<<10|(z[M.a+y[J>>2]|0]&255)<<13;E=E+1|0;if((E|0)==(i|0)){ra=1;break a}K=K+6|0;c=K>>1}}}else{var ra=0}}else{ra=0}}while(0);Vc(d);b=ra}else{b=0}q=d;return b}pd.X=1;function ac(b){if(b>>>0<245){var c=b>>>0<11?16:b+11&-8,d=c>>>3,b=C[X>>2],e=b>>>(d>>>0);if((e&3|0)!=0){var 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e=(y[X+440>>2]&4|0)==0;do{if(e){d=y[X+24>>2];if((d|0)==0){d=6}else{d=Ed(d);if((d|0)==0){d=6}else{var g=y[Cd+8>>2],g=b+47-y[X+12>>2]+g&-g;if(g>>>0<2147483647){var h=Fd(g);if((h|0)==(y[d>>2]+y[d+4>>2]|0)){var j=h,i=g;c=h;d=13}else{var f=h,k=g;d=15}}else{d=14}}}if(d==6){d=Fd(0);if((d|0)==-1){d=14}else{var g=y[Cd+8>>2],g=g+(b+47)&-g,h=d,o=y[Cd+4>>2],m=o-1|0,g=(m&h|0)==0?g:g-h+(m+h&-o)|0;if(g>>>0<2147483647){h=Fd(g);if((h|0)==(d|0)){j=d;i=g;c=h;d=13}else{f=h;k=g;d=15}}else{d=14}}}if(d==13){if((j|0)!=-1){var t=i,s=j;d=26;break}f=c;k=i}else{if(d==14){y[X+440>>2]=y[X+440>>2]|4;d=23;break}}d=-k|0;if((f|0)!=-1&k>>>0<2147483647){if(k>>>0<(b+48|0)>>>0){g=y[Cd+8>>2];g=b+47-k+g&-g;if(g>>>0<2147483647){if((Fd(g)|0)==-1){Fd(d);d=22}else{w=g+k|0;d=21}}else{w=k;d=21}}else{var 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a}}}}}while(0);$();a("Reached an unreachable!")}}while(0)}Module._free=Ld;Ld.X=1;function Md(b,c){var d,e,g,h=c>>>0>4294967231;a:do{if(h){y[Jd>>2]=12;var j=0}else{g=d=b-8|0;e=(b-4|0)>>2;var i=C[e],f=i&-8,k=f-8|0,o=b+k|0,m=d>>>0<C[X+16>>2]>>>0;do{if(!m){var t=i&3;if((t|0)!=1&(k|0)>-8){d=(b+(f-4)|0)>>2;if((y[d]&1|0)!=0){h=c>>>0<11?16:c+11&-8;if((t|0)==0){var s=0,w,i=y[g+4>>2]&-8;w=h>>>0<256?0:i>>>0>=(h+4|0)>>>0&&(i-h|0)>>>0<=y[Cd+8>>2]<<1>>>0?g:0;g=17}else{if(f>>>0<h>>>0){if((o|0)!=(y[X+24>>2]|0)){g=21}else{d=y[X+12>>2]+f|0;if(d>>>0>h>>>0){s=d-h|0;w=b+(h-8)|0;y[e]=h|i&1|2;y[b+(h-4)>>2]=s|1;y[X+24>>2]=w;y[X+12>>2]=s;s=0;w=g;g=17}else{g=21}}}else{s=f-h|0;if(s>>>0>15){y[e]=h|i&1|2;y[b+(h-4)>>2]=s|3;y[d]=y[d]|1;s=b+h|0}else{s=0}w=g;g=17}}do{if(g==17&&(w|0)!=0){(s|0)!=0&&Ld(s);j=w+8|0;break a}}while(0);g=ac(c);if((g|0)==0){j=0;break 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