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Surma
2020-08-24 12:43:12 +01:00
parent 4e090ea2f8
commit 8cd811cafd
4 changed files with 18 additions and 30 deletions
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40
codecs/mozjpeg/dec/mozjpeg_dec.cpp
View File

@@ -15,52 +15,40 @@ thread_local const val ImageData = val::global("ImageData");
val decode(std::string image_in) {
uint8_t* image_buffer = (uint8_t*)image_in.c_str();
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
/* Initialize the JPEG decompression object with default error handling. */
jpeg_decompress_struct cinfo;
jpeg_error_mgr jerr;
// Initialize the JPEG decompression object with default error handling.
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
jpeg_mem_src(&cinfo, image_buffer, image_in.length());
/* Read file header, set default decompression parameters */
// Read file header, set default decompression parameters
jpeg_read_header(&cinfo, TRUE);
// Force RGB decoding, even for grayscale images
cinfo.out_color_space = JCS_RGB;
// Force RGBA decoding, even for grayscale images
cinfo.out_color_space = JCS_EXT_RGBA;
jpeg_start_decompress(&cinfo);
// Prepare output buffer
size_t output_size = cinfo.output_width * cinfo.output_height * 4;
auto output_buffer = new uint8_t[output_size];
uint8_t* row_ptr = &output_buffer[0];
std::vector<uint8_t> output_buffer(output_size);
auto stride = cinfo.output_width * 4;
/* Process data */
// Process data
while (cinfo.output_scanline < cinfo.output_height) {
jpeg_read_scanlines(&cinfo, &row_ptr, 1);
// Turn that row from RGB into RGBA. I’m starting at the end so
// I can do it in-place.
for (int32_t x = cinfo.output_width - 1; x >= 0; x--) {
// RGB channels
for (auto i = 0; i < 3; i++) {
row_ptr[x * 4 + i] = row_ptr[x * 3 + i];
}
// Alpha channel
row_ptr[x * 4 + 3] = 255;
}
row_ptr += stride;
uint8_t* ptr = &output_buffer[stride * cinfo.output_scanline];
jpeg_read_scanlines(&cinfo, &ptr, 1);
}
jpeg_finish_decompress(&cinfo);
/* Step 7: release JPEG compression object */
// Step 7: release JPEG compression object
auto data = Uint8ClampedArray.new_(typed_memory_view(output_size, output_buffer));
auto data = Uint8ClampedArray.new_(typed_memory_view(output_size, &output_buffer[0]));
auto js_result = ImageData.new_(data, cinfo.output_width, cinfo.output_height);
/* This is an important step since it will release a good deal of memory. */
// This is an important step since it will release a good deal of memory.
jpeg_destroy_decompress(&cinfo);
delete[] output_buffer;
/* And we're done! */
// And we're done!
return js_result;
}

8
codecs/mozjpeg/dec/mozjpeg_dec.js
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@@ -17,7 +17,7 @@ function oa(a,b,c){var e=G;if(0<c){c=b+c-1;for(var f=0;f<a.length;++f){var g=a.c
function qa(a,b){var c=a>>1;for(var e=c+b/2;!(c>=e)&&H[c];)++c;c<<=1;if(32<c-a&&pa)return pa.decode(G.subarray(a,c));c=0;for(e="";;){var f=I[a+2*c>>1];if(0==f||c==b/2)return e;++c;e+=String.fromCharCode(f)}}function ra(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var e=b;c=c<2*a.length?c/2:a.length;for(var f=0;f<c;++f)I[b>>1]=a.charCodeAt(f),b+=2;I[b>>1]=0;return b-e}function sa(a){return 2*a.length}
function ta(a,b){for(var c=0,e="";!(c>=b/4);){var f=J[a+4*c>>2];if(0==f)break;++c;65536<=f?(f-=65536,e+=String.fromCharCode(55296|f>>10,56320|f&1023)):e+=String.fromCharCode(f)}return e}function ua(a,b,c){void 0===c&&(c=2147483647);if(4>c)return 0;var e=b;c=e+c-4;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var l=a.charCodeAt(++f);g=65536+((g&1023)<<10)|l&1023}J[b>>2]=g;b+=4;if(b+4>c)break}J[b>>2]=0;return b-e}
function va(a){for(var b=0,c=0;c<a.length;++c){var e=a.charCodeAt(c);55296<=e&&57343>=e&&++c;b+=4}return b}var L,M,G,I,H,J,N,wa,xa;function ya(a){L=a;d.HEAP8=M=new Int8Array(a);d.HEAP16=I=new Int16Array(a);d.HEAP32=J=new Int32Array(a);d.HEAPU8=G=new Uint8Array(a);d.HEAPU16=H=new Uint16Array(a);d.HEAPU32=N=new Uint32Array(a);d.HEAPF32=wa=new Float32Array(a);d.HEAPF64=xa=new Float64Array(a)}var za=d.INITIAL_MEMORY||16777216;d.wasmMemory?F=d.wasmMemory:F=new WebAssembly.Memory({initial:za/65536,maximum:32768});
F&&(L=F.buffer);za=L.byteLength;ya(L);J[3100]=5255440;function O(a){for(;0<a.length;){var b=a.shift();if("function"==typeof b)b(d);else{var c=b.Y;"number"===typeof c?void 0===b.U?d.dynCall_v(c):d.dynCall_vi(c,b.U):c(void 0===b.U?null:b.U)}}}var Aa=[],Ba=[],Ca=[],Da=[];function Ea(){var a=d.preRun.shift();Aa.unshift(a)}var Q=0,Fa=null,R=null;d.preloadedImages={};d.preloadedAudios={};
F&&(L=F.buffer);za=L.byteLength;ya(L);J[3104]=5255456;function O(a){for(;0<a.length;){var b=a.shift();if("function"==typeof b)b(d);else{var c=b.Y;"number"===typeof c?void 0===b.U?d.dynCall_v(c):d.dynCall_vi(c,b.U):c(void 0===b.U?null:b.U)}}}var Aa=[],Ba=[],Ca=[],Da=[];function Ea(){var a=d.preRun.shift();Aa.unshift(a)}var Q=0,Fa=null,R=null;d.preloadedImages={};d.preloadedAudios={};
function B(a){if(d.onAbort)d.onAbort(a);D(a);la=!0;a=new WebAssembly.RuntimeError("abort("+a+"). Build with -s ASSERTIONS=1 for more info.");ba(a);throw a;}function Ga(a){var b=S;return String.prototype.startsWith?b.startsWith(a):0===b.indexOf(a)}function Ha(){return Ga("data:application/octet-stream;base64,")}var S="mozjpeg_dec.wasm";if(!Ha()){var Ia=S;S=d.locateFile?d.locateFile(Ia,x):x+Ia}
function Ja(){try{if(E)return new Uint8Array(E);if(A)return A(S);throw"both async and sync fetching of the wasm failed";}catch(a){B(a)}}function Ka(){return E||!v&&!w||"function"!==typeof fetch||Ga("file://")?new Promise(function(a){a(Ja())}):fetch(S,{credentials:"same-origin"}).then(function(a){if(!a.ok)throw"failed to load wasm binary file at '"+S+"'";return a.arrayBuffer()}).catch(function(){return Ja()})}Ba.push({Y:function(){La()}});function Ma(){return 0<Ma.W}
function Na(a){switch(a){case 1:return 0;case 2:return 1;case 4:return 2;case 8:return 3;default:throw new TypeError("Unknown type size: "+a);}}var Oa=void 0;function T(a){for(var b="";G[a];)b+=Oa[G[a++]];return b}var U={},V={},Pa={};function Qa(a){if(void 0===a)return"_unknown";a=a.replace(/[^a-zA-Z0-9_]/g,"$");var b=a.charCodeAt(0);return 48<=b&&57>=b?"_"+a:a}
@@ -32,8 +32,8 @@ function ib(a,b){a=T(a);var c=d["dynCall_"+a];for(var e=[],f=1;f<a.length;++f)e.
function mb(a,b){function c(g){f[g]||V[g]||(Pa[g]?Pa[g].forEach(c):(e.push(g),f[g]=!0))}var e=[],f={};b.forEach(c);throw new jb(a+": "+e.map(kb).join([", "]));}function nb(a,b,c){switch(b){case 0:return c?function(e){return M[e]}:function(e){return G[e]};case 1:return c?function(e){return I[e>>1]}:function(e){return H[e>>1]};case 2:return c?function(e){return J[e>>2]}:function(e){return N[e>>2]};default:throw new TypeError("Unknown integer type: "+a);}}var ob={};
function pb(){return"object"===typeof globalThis?globalThis:Function("return this")()}function qb(a,b){var c=V[a];void 0===c&&W(b+" has unknown type "+kb(a));return c}var rb={},sb={};function tb(){if(!ub){var a={USER:"web_user",LOGNAME:"web_user",PATH:"/",PWD:"/",HOME:"/home/web_user",LANG:("object"===typeof navigator&&navigator.languages&&navigator.languages[0]||"C").replace("-","_")+".UTF-8",_:ca||"./this.program"},b;for(b in sb)a[b]=sb[b];var c=[];for(b in a)c.push(b+"="+a[b]);ub=c}return ub}
for(var ub,vb=[null,[],[]],wb=Array(256),xb=0;256>xb;++xb)wb[xb]=String.fromCharCode(xb);Oa=wb;Ta=d.BindingError=Sa("BindingError");Ua=d.InternalError=Sa("InternalError");d.count_emval_handles=function(){for(var a=0,b=5;b<Y.length;++b)void 0!==Y[b]&&++a;return a};d.get_first_emval=function(){for(var a=5;a<Y.length;++a)if(void 0!==Y[a])return Y[a];return null};jb=d.UnboundTypeError=Sa("UnboundTypeError");
var zb={m:function(a){return yb(a)},i:function(){},l:function(a){"uncaught_exception"in Ma?Ma.W++:Ma.W=1;throw a;},y:function(a,b,c,e,f){var g=Na(c);b=T(b);X(a,{name:b,fromWireType:function(l){return!!l},toWireType:function(l,k){return k?e:f},argPackAdvance:8,readValueFromPointer:function(l){if(1===c)var k=M;else if(2===c)k=I;else if(4===c)k=J;else throw new TypeError("Unknown boolean type size: "+b);return this.fromWireType(k[l>>g])},T:null})},x:function(a,b){b=T(b);X(a,{name:b,fromWireType:function(c){var e=
Y[c].value;Xa(c);return e},toWireType:function(c,e){return Ya(e)},argPackAdvance:8,readValueFromPointer:Za,T:null})},g:function(a,b,c){c=Na(c);b=T(b);X(a,{name:b,fromWireType:function(e){return e},toWireType:function(e,f){if("number"!==typeof f&&"boolean"!==typeof f)throw new TypeError('Cannot convert "'+$a(f)+'" to '+this.name);return f},argPackAdvance:8,readValueFromPointer:cb(b,c),T:null})},n:function(a,b,c,e,f,g){var l=hb(b,c);a=T(a);f=ib(e,f);gb(a,function(){mb("Cannot call "+a+" due to unbound types",
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l)},b-1);Va(l,function(k){var h=[k[0],null].concat(k.slice(1)),n=k=a,p=f,q=h.length;2>q&&W("argTypes array size mismatch! Must at least get return value and 'this' types!");for(var y=null!==h[1]&&!1,C=!1,m=1;m<h.length;++m)if(null!==h[m]&&void 0===h[m].T){C=!0;break}var ab="void"!==h[0].name,K="",P="";for(m=0;m<q-2;++m)K+=(0!==m?", ":"")+"arg"+m,P+=(0!==m?", ":"")+"arg"+m+"Wired";n="return function "+Qa(n)+"("+K+") {\nif (arguments.length !== "+(q-2)+") {\nthrowBindingError('function "+n+" called with ' + arguments.length + ' arguments, expected "+
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if(C)n+="runDestructors(destructors);\n";else for(m=y?1:2;m<h.length;++m)q=1===m?"thisWired":"arg"+(m-2)+"Wired",null!==h[m].T&&(n+=q+"_dtor("+q+"); // "+h[m].name+"\n",K.push(q+"_dtor"),p.push(h[m].T));ab&&(n+="var ret = retType.fromWireType(rv);\nreturn ret;\n");K.push(n+"}\n");h=db(K).apply(null,p);m=b-1;if(!d.hasOwnProperty(k))throw new Ua("Replacing nonexistant public symbol");void 0!==d[k].S&&void 0!==m?d[k].S[m]=h:(d[k]=h,d[k].X=m);return[]})},b:function(a,b,c,e,f){function g(n){return n}b=
@@ -42,7 +42,7 @@ l,0!==e),T:null})},a:function(a,b,c){function e(g){g>>=2;var l=N;return new f(L,
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2:65535>=q?n+3:n+4}return n}:function(){return f.length})(),k=yb(4+l+1);N[k>>2]=l;if(c&&g)oa(f,k+4,l+1);else if(g)for(g=0;g<l;++g){var h=f.charCodeAt(g);255<h&&(Z(k),W("String has UTF-16 code units that do not fit in 8 bits"));G[k+4+g]=h}else for(g=0;g<l;++g)G[k+4+g]=f[g];null!==e&&e.push(Z,k);return k},argPackAdvance:8,readValueFromPointer:Za,T:function(e){Z(e)}})},d:function(a,b,c){c=T(c);if(2===b){var e=qa;var f=ra;var g=sa;var l=function(){return H};var k=1}else 4===b&&(e=ta,f=ua,g=va,l=function(){return N},
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codecs/mozjpeg/dec/mozjpeg_dec.wasm
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codecs/mozjpeg/enc/mozjpeg_enc.wasm
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