@babylonjs/core
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Getting started? Play directly with the Babylon.js API using our [playground](https://playground.babylonjs.com/). It also contains a lot of samples to learn how to use it.
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JavaScript
/* eslint-disable @typescript-eslint/naming-convention */
import { Logger } from "../../../../Misc/logger.js";
import { ParseNullTerminatedString, ParseUint32, ParseValue } from "./exrLoader.core.js";
/**
* Inspired by https://github.com/sciecode/three.js/blob/dev/examples/jsm/loaders/EXRLoader.js
* Referred to the original Industrial Light & Magic OpenEXR implementation and the TinyEXR / Syoyo Fujita
* implementation.
*/
// /*
// Copyright (c) 2014 - 2017, Syoyo Fujita
// All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Syoyo Fujita nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// */
// // TinyEXR contains some OpenEXR code, which is licensed under ------------
// ///////////////////////////////////////////////////////////////////////////
// //
// // Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
// // Digital Ltd. LLC
// //
// // All rights reserved.
// //
// // Redistribution and use in source and binary forms, with or without
// // modification, are permitted provided that the following conditions are
// // met:
// // * Redistributions of source code must retain the above copyright
// // notice, this list of conditions and the following disclaimer.
// // * Redistributions in binary form must reproduce the above
// // copyright notice, this list of conditions and the following disclaimer
// // in the documentation and/or other materials provided with the
// // distribution.
// // * Neither the name of Industrial Light & Magic nor the names of
// // its contributors may be used to endorse or promote products derived
// // from this software without specific prior written permission.
// //
// // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// //
// ///////////////////////////////////////////////////////////////////////////
// // End of OpenEXR license -------------------------------------------------
const EXR_MAGIC = 20000630;
/**
* Gets the EXR header
* @param dataView defines the data view to read from
* @param offset defines the offset to start reading from
* @returns the header
*/
export function GetExrHeader(dataView, offset) {
if (dataView.getUint32(0, true) != EXR_MAGIC) {
throw new Error("Incorrect OpenEXR format");
}
const version = dataView.getUint8(4);
const specData = dataView.getUint8(5); // fullMask
const spec = {
singleTile: !!(specData & 2),
longName: !!(specData & 4),
deepFormat: !!(specData & 8),
multiPart: !!(specData & 16),
};
offset.value = 8;
const headerData = {};
let keepReading = true;
while (keepReading) {
const attributeName = ParseNullTerminatedString(dataView.buffer, offset);
if (!attributeName) {
keepReading = false;
}
else {
const attributeType = ParseNullTerminatedString(dataView.buffer, offset);
const attributeSize = ParseUint32(dataView, offset);
const attributeValue = ParseValue(dataView, offset, attributeType, attributeSize);
if (attributeValue === undefined) {
Logger.Warn(`Unknown header attribute type ${attributeType}'.`);
}
else {
headerData[attributeName] = attributeValue;
}
}
}
if ((specData & ~0x04) != 0) {
throw new Error("Unsupported file format");
}
return { version: version, spec: spec, ...headerData };
}
//# sourceMappingURL=exrLoader.header.js.map