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Move waiters and workers into separate folders.

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This commit is contained in:
j433866 2019-06-06 09:09:48 +01:00
parent 31a3af1f84
commit b77239fc15
16 changed files with 31 additions and 31 deletions
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77
src/web/LoaderWorker.js
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@ -1,77 +0,0 @@
/**
* Web Worker to load large amounts of data without locking up the UI.
*
* @author n1474335 [n1474335@gmail.com]
* @copyright Crown Copyright 2017
* @license Apache-2.0
*/
self.port = null;
self.id = null;
self.handleMessage = function(e) {
const r = e.data;
log.debug(`LoaderWorker receiving command '${r.action}'`);
switch (r.action) {
case "loadInput":
self.loadFile(r.data.file, r.data.inputNum);
break;
}
};
/**
* Respond to message from parent thread.
*/
self.addEventListener("message", function(e) {
const r = e.data;
if (r.hasOwnProperty("file") && (r.hasOwnProperty("inputNum"))) {
self.loadFile(r.file, r.inputNum);
} else if (r.hasOwnProperty("file")) {
self.loadFile(r.file, "");
} else if (r.hasOwnProperty("id")) {
self.id = r.id;
}
});
/**
* Loads a file object into an ArrayBuffer, then transfers it back to the parent thread.
*
* @param {File} file
* @param {string} inputNum
*/
self.loadFile = function(file, inputNum) {
const reader = new FileReader();
if (file.size >= 256*256*256*128) {
self.postMessage({"error": "File size too large.", "inputNum": inputNum, "id": self.id});
return;
}
const data = new Uint8Array(file.size);
let offset = 0;
const CHUNK_SIZE = 10485760; // 10MiB
const seek = function() {
if (offset >= file.size) {
self.postMessage({"fileBuffer": data.buffer, "inputNum": inputNum, "id": self.id}, [data.buffer]);
return;
}
self.postMessage({"progress": Math.round(offset / file.size * 100), "inputNum": inputNum});
const slice = file.slice(offset, offset + CHUNK_SIZE);
reader.readAsArrayBuffer(slice);
};
reader.onload = function(e) {
data.set(new Uint8Array(reader.result), offset);
offset += CHUNK_SIZE;
seek();
};
reader.onerror = function(e) {
self.postMessage({"error": reader.error.message, "inputNum": inputNum, "id": self.id});
};
seek();
};