import {
DataUtils,
DataTextureLoader,
FloatType,
HalfFloatType,
RGBAFormat
} from 'three';
class LogLuvLoader extends DataTextureLoader {
constructor( manager ) {
super( manager );
this.type = HalfFloatType;
}
parse( buffer ) {
const ifds = UTIF.decode( buffer );
UTIF.decodeImage( buffer, ifds[ 0 ] );
const rgba = UTIF.toRGBA( ifds[ 0 ], this.type );
return {
width: ifds[ 0 ].width,
height: ifds[ 0 ].height,
data: rgba,
format: RGBAFormat,
type: this.type,
flipY: true
};
}
setDataType( value ) {
this.type = value;
return this;
}
}
// from https://github.com/photopea/UTIF.js (MIT License)
const UTIF = {};
UTIF.decode = function ( buff, prm ) {
if ( prm == null ) prm = { parseMN: true, debug: false }; // read MakerNote, debug
var data = new Uint8Array( buff ), offset = 0;
var id = UTIF._binBE.readASCII( data, offset, 2 ); offset += 2;
var bin = id == 'II' ? UTIF._binLE : UTIF._binBE;
bin.readUshort( data, offset ); offset += 2;
var ifdo = bin.readUint( data, offset );
var ifds = [];
while ( true ) {
var cnt = bin.readUshort( data, ifdo ), typ = bin.readUshort( data, ifdo + 4 ); if ( cnt != 0 ) if ( typ < 1 || 13 < typ ) {
console.log( 'error in TIFF' ); break;
}
UTIF._readIFD( bin, data, ifdo, ifds, 0, prm );
ifdo = bin.readUint( data, ifdo + 2 + cnt * 12 );
if ( ifdo == 0 ) break;
}
return ifds;
};
UTIF.decodeImage = function ( buff, img, ifds ) {
if ( img.data ) return;
var data = new Uint8Array( buff );
var id = UTIF._binBE.readASCII( data, 0, 2 );
if ( img[ 't256' ] == null ) return; // No width => probably not an image
img.isLE = id == 'II';
img.width = img[ 't256' ][ 0 ]; //delete img["t256"];
img.height = img[ 't257' ][ 0 ]; //delete img["t257"];
var cmpr = img[ 't259' ] ? img[ 't259' ][ 0 ] : 1; //delete img["t259"];
var fo = img[ 't266' ] ? img[ 't266' ][ 0 ] : 1; //delete img["t266"];
if ( img[ 't284' ] && img[ 't284' ][ 0 ] == 2 ) console.log( 'PlanarConfiguration 2 should not be used!' );
if ( cmpr == 7 && img[ 't258' ] && img[ 't258' ].length > 3 ) img[ 't258' ] = img[ 't258' ].slice( 0, 3 );
var bipp; // bits per pixel
if ( img[ 't258' ] ) bipp = Math.min( 32, img[ 't258' ][ 0 ] ) * img[ 't258' ].length;
else bipp = ( img[ 't277' ] ? img[ 't277' ][ 0 ] : 1 );
// Some .NEF files have t258==14, even though they use 16 bits per pixel
if ( cmpr == 1 && img[ 't279' ] != null && img[ 't278' ] && img[ 't262' ][ 0 ] == 32803 ) {
bipp = Math.round( ( img[ 't279' ][ 0 ] * 8 ) / ( img.width * img[ 't278' ][ 0 ] ) );
}
var bipl = Math.ceil( img.width * bipp / 8 ) * 8;
var soff = img[ 't273' ]; if ( soff == null ) soff = img[ 't324' ];
var bcnt = img[ 't279' ]; if ( cmpr == 1 && soff.length == 1 ) bcnt = [ img.height * ( bipl >>> 3 ) ]; if ( bcnt == null ) bcnt = img[ 't325' ];
//bcnt[0] = Math.min(bcnt[0], data.length); // Hasselblad, "RAW_HASSELBLAD_H3D39II.3FR"
var bytes = new Uint8Array( img.height * ( bipl >>> 3 ) ), bilen = 0;
if ( img[ 't322' ] != null ) {
var tw = img[ 't322' ][ 0 ], th = img[ 't323' ][ 0 ];
var tx = Math.floor( ( img.width + tw - 1 ) / tw );
var ty = Math.floor( ( img.height + th - 1 ) / th );
var tbuff = new Uint8Array( Math.ceil( tw * th * bipp / 8 ) | 0 );
for ( var y = 0; y < ty; y ++ )
for ( var x = 0; x < tx; x ++ ) {
var i = y * tx + x; for ( var j = 0; j < tbuff.length; j ++ ) tbuff[ j ] = 0;
UTIF.decode._decompress( img, ifds, data, soff[ i ], bcnt[ i ], cmpr, tbuff, 0, fo );
// Might be required for 7 too. Need to check
if ( cmpr == 6 ) bytes = tbuff;
else UTIF._copyTile( tbuff, Math.ceil( tw * bipp / 8 ) | 0, th, bytes, Math.ceil( img.width * bipp / 8 ) | 0, img.height, Math.ceil( x * tw * bipp / 8 ) | 0, y * th );
}
bilen = bytes.length * 8;
} else {
var rps = img[ 't278' ] ? img[ 't278' ][ 0 ] : img.height; rps = Math.min( rps, img.height );
for ( var i = 0; i < soff.length; i ++ ) {
UTIF.decode._decompress( img, ifds, data, soff[ i ], bcnt[ i ], cmpr, bytes, Math.ceil( bilen / 8 ) | 0, fo );
bilen += bipl * rps;
}
bilen = Math.min( bilen, bytes.length * 8 );
}
img.data = new Uint8Array( bytes.buffer, 0, Math.ceil( bilen / 8 ) | 0 );
};
UTIF.decode._decompress = function ( img, ifds, data, off, len, cmpr, tgt, toff ) {
//console.log("compression", cmpr);
//var time = Date.now();
if ( cmpr == 34676 ) UTIF.decode._decodeLogLuv32( img, data, off, len, tgt, toff );
else console.log( 'Unsupported compression', cmpr );
//console.log(Date.now()-time);
var bps = ( img[ 't258' ] ? Math.min( 32, img[ 't258' ][ 0 ] ) : 1 );
var noc = ( img[ 't277' ] ? img[ 't277' ][ 0 ] : 1 ), bpp = ( bps * noc ) >>> 3, h = ( img[ 't278' ] ? img[ 't278' ][ 0 ] : img.height ), bpl = Math.ceil( bps * noc * img.width / 8 );
// convert to Little Endian /*
if ( bps == 16 && ! img.isLE && img[ 't33422' ] == null ) // not DNG
for ( var y = 0; y < h; y ++ ) {
//console.log("fixing endianity");
var roff = toff + y * bpl;
for ( var x = 1; x < bpl; x += 2 ) {
var t = tgt[ roff + x ]; tgt[ roff + x ] = tgt[ roff + x - 1 ]; tgt[ roff + x - 1 ] = t;
}
} //*/
if ( img[ 't317' ] && img[ 't317' ][ 0 ] == 2 ) {
for ( var y = 0; y < h; y ++ ) {
var ntoff = toff + y * bpl;
if ( bps == 16 ) for ( var j = bpp; j < bpl; j += 2 ) {
var nv = ( ( tgt[ ntoff + j + 1 ] << 8 ) | tgt[ ntoff + j ] ) + ( ( tgt[ ntoff + j - bpp + 1 ] << 8 ) | tgt[ ntoff + j - bpp ] );
tgt[ ntoff + j ] = nv & 255; tgt[ ntoff + j + 1 ] = ( nv >>> 8 ) & 255;
}
else if ( noc == 3 ) for ( var j = 3; j < bpl; j += 3 ) {
tgt[ ntoff + j ] = ( tgt[ ntoff + j ] + tgt[ ntoff + j - 3 ] ) & 255;
tgt[ ntoff + j + 1 ] = ( tgt[ ntoff + j + 1 ] + tgt[ ntoff + j - 2 ] ) & 255;
tgt[ ntoff + j + 2 ] = ( tgt[ ntoff + j + 2 ] + tgt[ ntoff + j - 1 ] ) & 255;
}
else for ( var j = bpp; j < bpl; j ++ ) tgt[ ntoff + j ] = ( tgt[ ntoff + j ] + tgt[ ntoff + j - bpp ] ) & 255;
}
}
};
UTIF.decode._decodeLogLuv32 = function ( img, data, off, len, tgt, toff ) {
var w = img.width, qw = w * 4;
var io = 0, out = new Uint8Array( qw );
while ( io < len ) {
var oo = 0;
while ( oo < qw ) {
var c = data[ off + io ]; io ++;
if ( c < 128 ) {
for ( var j = 0; j < c; j ++ ) out[ oo + j ] = data[ off + io + j ]; oo += c; io += c;
} else {
c = c - 126; for ( var j = 0; j < c; j ++ ) out[ oo + j ] = data[ off + io ]; oo += c; io ++;
}
}
for ( var x = 0; x < w; x ++ ) {
tgt[ toff + 0 ] = out[ x ];
tgt[ toff + 1 ] = out[ x + w ];
tgt[ toff + 2 ] = out[ x + w * 2 ];
tgt[ toff + 4 ] = out[ x + w * 3 ];
toff += 6;
}
}
};
UTIF.tags = {};
//UTIF.ttypes = { 256:3,257:3,258:3, 259:3, 262:3, 273:4, 274:3, 277:3,278:4,279:4, 282:5, 283:5, 284:3, 286:5,287:5, 296:3, 305:2, 306:2, 338:3, 513:4, 514:4, 34665:4 };
// start at tag 250
UTIF._types = function () {
var main = new Array( 250 ); main.fill( 0 );
main = main.concat( [ 0, 0, 0, 0, 4, 3, 3, 3, 3, 3, 0, 0, 3, 0, 0, 0, 3, 0, 0, 2, 2, 2, 2, 4, 3, 0, 0, 3, 4, 4, 3, 3, 5, 5, 3, 2, 5, 5, 0, 0, 0, 0, 4, 4, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 3, 5, 5, 3, 0, 3, 3, 4, 4, 4, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ] );
var rest = { 33432: 2, 33434: 5, 33437: 5, 34665: 4, 34850: 3, 34853: 4, 34855: 3, 34864: 3, 34866: 4, 36864: 7, 36867: 2, 36868: 2, 37121: 7, 37377: 10, 37378: 5, 37380: 10, 37381: 5, 37383: 3, 37384: 3, 37385: 3, 37386: 5, 37510: 7, 37520: 2, 37521: 2, 37522: 2, 40960: 7, 40961: 3, 40962: 4, 40963: 4, 40965: 4, 41486: 5, 41487: 5, 41488: 3, 41985: 3, 41986: 3, 41987: 3, 41988: 5, 41989: 3, 41990: 3, 41993: 3, 41994: 3, 41995: 7, 41996: 3, 42032: 2, 42033: 2, 42034: 5, 42036: 2, 42037: 2, 59932: 7 };
return {
basic: {
main: main,
rest: rest
},
gps: {
main: [ 1, 2, 5, 2, 5, 1, 5, 5, 0, 9 ],
rest: { 18: 2, 29: 2 }
}
};
}();
UTIF._readIFD = function ( bin, data, offset, ifds, depth, prm ) {
var cnt = bin.readUshort( data, offset ); offset += 2;
var ifd = {};
if ( prm.debug ) console.log( ' '.repeat( depth ), ifds.length - 1, '>>>----------------' );
for ( var i = 0; i < cnt; i ++ ) {
var tag = bin.readUshort( data, offset ); offset += 2;
var type = bin.readUshort( data, offset ); offset += 2;
var num = bin.readUint( data, offset ); offset += 4;
var voff = bin.readUint( data, offset ); offset += 4;
var arr = [];
//ifd["t"+tag+"-"+UTIF.tags[tag]] = arr;
if ( type == 1 || type == 7 ) {
arr = new Uint8Array( data.buffer, ( num < 5 ? offset - 4 : voff ), num );
}
if ( type == 2 ) {
var o0 = ( num < 5 ? offset - 4 : voff ), c = data[ o0 ], len = Math.max( 0, Math.min( num - 1, data.length - o0 ) );
if ( c < 128 || len == 0 ) arr.push( bin.readASCII( data, o0, len ) );
else arr = new Uint8Array( data.buffer, o0, len );
}
if ( type == 3 ) {
for ( var j = 0; j < num; j ++ ) arr.push( bin.readUshort( data, ( num < 3 ? offset - 4 : voff ) + 2 * j ) );
}
if ( type == 4
|| type == 13 ) {
for ( var j = 0; j < num; j ++ ) arr.push( bin.readUint( data, ( num < 2 ? offset - 4 : voff ) + 4 * j ) );
}
if ( type == 5 || type == 10 ) {
var ri = type == 5 ? bin.readUint : bin.readInt;
for ( var j = 0; j < num; j ++ ) arr.push( [ ri( data, voff + j * 8 ), ri( data, voff + j * 8 + 4 ) ] );
}
if ( type == 8 ) {
for ( var j = 0; j < num; j ++ ) arr.push( bin.readShort( data, ( num < 3 ? offset - 4 : voff ) + 2 * j ) );
}
if ( type == 9 ) {
for ( var j = 0; j < num; j ++ ) arr.push( bin.readInt( data, ( num < 2 ? offset - 4 : voff ) + 4 * j ) );
}
if ( type == 11 ) {
for ( var j = 0; j < num; j ++ ) arr.push( bin.readFloat( data, voff + j * 4 ) );
}
if ( type == 12 ) {
for ( var j = 0; j < num; j ++ ) arr.push( bin.readDouble( data, voff + j * 8 ) );
}
if ( num != 0 && arr.length == 0 ) {
console.log( tag, 'unknown TIFF tag type: ', type, 'num:', num ); if ( i == 0 ) return; continue;
}
if ( prm.debug ) console.log( ' '.repeat( depth ), tag, type, UTIF.tags[ tag ], arr );
ifd[ 't' + tag ] = arr;
if ( tag == 330 || tag == 34665 || tag == 34853 || ( tag == 50740 && bin.readUshort( data, bin.readUint( arr, 0 ) ) < 300 ) || tag == 61440 ) {
var oarr = tag == 50740 ? [ bin.readUint( arr, 0 ) ] : arr;
var subfd = [];
for ( var j = 0; j < oarr.length; j ++ ) UTIF._readIFD( bin, data, oarr[ j ], subfd, depth + 1, prm );
if ( tag == 330 ) ifd.subIFD = subfd;
if ( tag == 34665 ) ifd.exifIFD = subfd[ 0 ];
if ( tag == 34853 ) ifd.gpsiIFD = subfd[ 0 ]; //console.log("gps", subfd[0]); }
if ( tag == 50740 ) ifd.dngPrvt = subfd[ 0 ];
if ( tag == 61440 ) ifd.fujiIFD = subfd[ 0 ];
}
if ( tag == 37500 && prm.parseMN ) {
var mn = arr;
//console.log(bin.readASCII(mn,0,mn.length), mn);
if ( bin.readASCII( mn, 0, 5 ) == 'Nikon' ) ifd.makerNote = UTIF[ 'decode' ]( mn.slice( 10 ).buffer )[ 0 ];
else if ( bin.readUshort( data, voff ) < 300 && bin.readUshort( data, voff + 4 ) <= 12 ) {
var subsub = []; UTIF._readIFD( bin, data, voff, subsub, depth + 1, prm );
ifd.makerNote = subsub[ 0 ];
}
}
}
ifds.push( ifd );
if ( prm.debug ) console.log( ' '.repeat( depth ), '<<<---------------' );
return offset;
};
UTIF.toRGBA = function ( out, type ) {
const w = out.width, h = out.height, area = w * h, data = out.data;
let img;
switch ( type ) {
case HalfFloatType:
img = new Uint16Array( area * 4 );
break;
case FloatType:
img = new Float32Array( area * 4 );
break;
default:
console.error( 'THREE.LogLuvLoader: Unsupported texture data type:', type );
}
let intp = out[ 't262' ] ? out[ 't262' ][ 0 ] : 2;
const bps = out[ 't258' ] ? Math.min( 32, out[ 't258' ][ 0 ] ) : 1;
if ( out[ 't262' ] == null && bps == 1 ) intp = 0;
if ( intp == 32845 ) {
for ( let y = 0; y < h; y ++ ) {
for ( let x = 0; x < w; x ++ ) {
const si = ( y * w + x ) * 6, qi = ( y * w + x ) * 4;
let L = ( data[ si + 1 ] << 8 ) | data[ si ];
L = Math.pow( 2, ( L + 0.5 ) / 256 - 64 );
const u = ( data[ si + 3 ] + 0.5 ) / 410;
const v = ( data[ si + 5 ] + 0.5 ) / 410;
// Luv to xyY
const sX = ( 9 * u ) / ( 6 * u - 16 * v + 12 );
const sY = ( 4 * v ) / ( 6 * u - 16 * v + 12 );
const bY = L;
// xyY to XYZ
const X = ( sX * bY ) / sY, Y = bY, Z = ( 1 - sX - sY ) * bY / sY;
// XYZ to linear RGB
const r = 2.690 * X - 1.276 * Y - 0.414 * Z;
const g = - 1.022 * X + 1.978 * Y + 0.044 * Z;
const b = 0.061 * X - 0.224 * Y + 1.163 * Z;
if ( type === HalfFloatType ) {
img[ qi ] = DataUtils.toHalfFloat( Math.min( r, 65504 ) );
img[ qi + 1 ] = DataUtils.toHalfFloat( Math.min( g, 65504 ) );
img[ qi + 2 ] = DataUtils.toHalfFloat( Math.min( b, 65504 ) );
img[ qi + 3 ] = DataUtils.toHalfFloat( 1 );
} else {
img[ qi ] = r;
img[ qi + 1 ] = g;
img[ qi + 2 ] = b;
img[ qi + 3 ] = 1;
}
}
}
} else {
console.log( 'Unsupported Photometric interpretation: ' + intp );
}
return img;
};
UTIF._binBE =
{
nextZero: function ( data, o ) {
while ( data[ o ] != 0 ) o ++; return o;
},
readUshort: function ( buff, p ) {
return ( buff[ p ] << 8 ) | buff[ p + 1 ];
},
readShort: function ( buff, p ) {
var a = UTIF._binBE.ui8; a[ 0 ] = buff[ p + 1 ]; a[ 1 ] = buff[ p + 0 ]; return UTIF._binBE.i16[ 0 ];
},
readInt: function ( buff, p ) {
var a = UTIF._binBE.ui8; a[ 0 ] = buff[ p + 3 ]; a[ 1 ] = buff[ p + 2 ]; a[ 2 ] = buff[ p + 1 ]; a[ 3 ] = buff[ p + 0 ]; return UTIF._binBE.i32[ 0 ];
},
readUint: function ( buff, p ) {
var a = UTIF._binBE.ui8; a[ 0 ] = buff[ p + 3 ]; a[ 1 ] = buff[ p + 2 ]; a[ 2 ] = buff[ p + 1 ]; a[ 3 ] = buff[ p + 0 ]; return UTIF._binBE.ui32[ 0 ];
},
readASCII: function ( buff, p, l ) {
var s = ''; for ( var i = 0; i < l; i ++ ) s += String.fromCharCode( buff[ p + i ] ); return s;
},
readFloat: function ( buff, p ) {
var a = UTIF._binBE.ui8; for ( var i = 0; i < 4; i ++ ) a[ i ] = buff[ p + 3 - i ]; return UTIF._binBE.fl32[ 0 ];
},
readDouble: function ( buff, p ) {
var a = UTIF._binBE.ui8; for ( var i = 0; i < 8; i ++ ) a[ i ] = buff[ p + 7 - i ]; return UTIF._binBE.fl64[ 0 ];
},
writeUshort: function ( buff, p, n ) {
buff[ p ] = ( n >> 8 ) & 255; buff[ p + 1 ] = n & 255;
},
writeInt: function ( buff, p, n ) {
var a = UTIF._binBE.ui8; UTIF._binBE.i32[ 0 ] = n; buff[ p + 3 ] = a[ 0 ]; buff[ p + 2 ] = a[ 1 ]; buff[ p + 1 ] = a[ 2 ]; buff[ p + 0 ] = a[ 3 ];
},
writeUint: function ( buff, p, n ) {
buff[ p ] = ( n >> 24 ) & 255; buff[ p + 1 ] = ( n >> 16 ) & 255; buff[ p + 2 ] = ( n >> 8 ) & 255; buff[ p + 3 ] = ( n >> 0 ) & 255;
},
writeASCII: function ( buff, p, s ) {
for ( var i = 0; i < s.length; i ++ ) buff[ p + i ] = s.charCodeAt( i );
},
writeDouble: function ( buff, p, n ) {
UTIF._binBE.fl64[ 0 ] = n;
for ( var i = 0; i < 8; i ++ ) buff[ p + i ] = UTIF._binBE.ui8[ 7 - i ];
}
};
UTIF._binBE.ui8 = new Uint8Array( 8 );
UTIF._binBE.i16 = new Int16Array( UTIF._binBE.ui8.buffer );
UTIF._binBE.i32 = new Int32Array( UTIF._binBE.ui8.buffer );
UTIF._binBE.ui32 = new Uint32Array( UTIF._binBE.ui8.buffer );
UTIF._binBE.fl32 = new Float32Array( UTIF._binBE.ui8.buffer );
UTIF._binBE.fl64 = new Float64Array( UTIF._binBE.ui8.buffer );
UTIF._binLE =
{
nextZero: UTIF._binBE.nextZero,
readUshort: function ( buff, p ) {
return ( buff[ p + 1 ] << 8 ) | buff[ p ];
},
readShort: function ( buff, p ) {
var a = UTIF._binBE.ui8; a[ 0 ] = buff[ p + 0 ]; a[ 1 ] = buff[ p + 1 ]; return UTIF._binBE.i16[ 0 ];
},
readInt: function ( buff, p ) {
var a = UTIF._binBE.ui8; a[ 0 ] = buff[ p + 0 ]; a[ 1 ] = buff[ p + 1 ]; a[ 2 ] = buff[ p + 2 ]; a[ 3 ] = buff[ p + 3 ]; return UTIF._binBE.i32[ 0 ];
},
readUint: function ( buff, p ) {
var a = UTIF._binBE.ui8; a[ 0 ] = buff[ p + 0 ]; a[ 1 ] = buff[ p + 1 ]; a[ 2 ] = buff[ p + 2 ]; a[ 3 ] = buff[ p + 3 ]; return UTIF._binBE.ui32[ 0 ];
},
readASCII: UTIF._binBE.readASCII,
readFloat: function ( buff, p ) {
var a = UTIF._binBE.ui8; for ( var i = 0; i < 4; i ++ ) a[ i ] = buff[ p + i ]; return UTIF._binBE.fl32[ 0 ];
},
readDouble: function ( buff, p ) {
var a = UTIF._binBE.ui8; for ( var i = 0; i < 8; i ++ ) a[ i ] = buff[ p + i ]; return UTIF._binBE.fl64[ 0 ];
},
writeUshort: function ( buff, p, n ) {
buff[ p ] = ( n ) & 255; buff[ p + 1 ] = ( n >> 8 ) & 255;
},
writeInt: function ( buff, p, n ) {
var a = UTIF._binBE.ui8; UTIF._binBE.i32[ 0 ] = n; buff[ p + 0 ] = a[ 0 ]; buff[ p + 1 ] = a[ 1 ]; buff[ p + 2 ] = a[ 2 ]; buff[ p + 3 ] = a[ 3 ];
},
writeUint: function ( buff, p, n ) {
buff[ p ] = ( n >>> 0 ) & 255; buff[ p + 1 ] = ( n >>> 8 ) & 255; buff[ p + 2 ] = ( n >>> 16 ) & 255; buff[ p + 3 ] = ( n >>> 24 ) & 255;
},
writeASCII: UTIF._binBE.writeASCII
};
UTIF._copyTile = function ( tb, tw, th, b, w, h, xoff, yoff ) {
//log("copyTile", tw, th, w, h, xoff, yoff);
var xlim = Math.min( tw, w - xoff );
var ylim = Math.min( th, h - yoff );
for ( var y = 0; y < ylim; y ++ ) {
var tof = ( yoff + y ) * w + xoff;
var sof = y * tw;
for ( var x = 0; x < xlim; x ++ ) b[ tof + x ] = tb[ sof + x ];
}
};
export { LogLuvLoader };
