Merge pull request #19675 from Snuffleupagus/IccColorSpace-fetchSync

Introduce a `fetchSync` helper function for the `IccColorSpace` classes

l10n/en-US/viewer.ftl

@@ -480,7 +480,6 @@ pdfjs-editor-new-alt-text-error-close-button = Close
 # Variables:
 #   $totalSize (Number) - the total size (in MB) of the AI model.
 #   $downloadedSize (Number) - the downloaded size (in MB) of the AI model.
-#   $percent (Number) - the percentage of the downloaded size.
 pdfjs-editor-new-alt-text-ai-model-downloading-progress = Downloading alt text AI model ({ $downloadedSize } of { $totalSize } MB)
     .aria-valuetext = Downloading alt text AI model ({ $downloadedSize } of { $totalSize } MB)
 

src/core/icc_colorspace.js

@@ -28,6 +28,17 @@ import { shadow, warn } from "../shared/util.js";
 import { ColorSpace } from "./colorspace.js";
 import { QCMS } from "../../external/qcms/qcms_utils.js";
 
+function fetchSync(url) {
+  // Parsing and using color spaces is still synchronous,
+  // so we must load the wasm module synchronously.
+  // TODO: Make the color space stuff asynchronous and use fetch.
+  const xhr = new XMLHttpRequest();
+  xhr.open("GET", url, false);
+  xhr.responseType = "arraybuffer";
+  xhr.send(null);
+  return xhr.response;
+}
+
 class IccColorSpace extends ColorSpace {
   #transformer;
 
@@ -132,7 +143,9 @@ class IccColorSpace extends ColorSpace {
     if (this.#useWasm) {
       if (this.#wasmUrl) {
         try {
-          this._module = QCMS._module = this.#load();
+          this._module = QCMS._module = initSync({
+            module: fetchSync(`${this.#wasmUrl}qcms_bg.wasm`),
+          });
           isUsable = !!this._module;
         } catch (e) {
           warn(`ICCBased color space: "${e}".`);
@@ -144,30 +157,16 @@ class IccColorSpace extends ColorSpace {
 
     return shadow(this, "isUsable", isUsable);
   }
-
-  static #load() {
-    // Parsing and using color spaces is still synchronous,
-    // so we must load the wasm module synchronously.
-    // TODO: Make the color space stuff asynchronous and use fetch.
-    const filename = "qcms_bg.wasm";
-    const xhr = new XMLHttpRequest();
-    xhr.open("GET", `${this.#wasmUrl}${filename}`, false);
-    xhr.responseType = "arraybuffer";
-    xhr.send(null);
-    return initSync({ module: xhr.response });
-  }
 }
 
 class CmykICCBasedCS extends IccColorSpace {
   static #iccUrl;
 
   constructor() {
-    const filename = "CGATS001Compat-v2-micro.icc";
-    const xhr = new XMLHttpRequest();
-    xhr.open("GET", `${CmykICCBasedCS.#iccUrl}${filename}`, false);
-    xhr.responseType = "arraybuffer";
-    xhr.send(null);
-    super(new Uint8Array(xhr.response), "DeviceCMYK", 4);
+    const iccProfile = new Uint8Array(
+      fetchSync(`${CmykICCBasedCS.#iccUrl}CGATS001Compat-v2-micro.icc`)
+    );
+    super(iccProfile, "DeviceCMYK", 4);
   }
 
   static setOptions({ iccUrl }) {

src/core/jpg.js

@@ -15,6 +15,7 @@
 
 import { assert, BaseException, warn } from "../shared/util.js";
 import { ColorSpaceUtils } from "./colorspace_utils.js";
+import { DeviceCmykCS } from "./colorspace.js";
 import { grayToRGBA } from "../shared/image_utils.js";
 import { readUint16 } from "./core_utils.js";
 
@@ -1349,6 +1350,13 @@ class JpegImage {
 
   _convertCmykToRgba(data) {
     ColorSpaceUtils.cmyk.getRgbBuffer(data, 0, data.length / 4, data, 0, 8, 1);
+
+    if (ColorSpaceUtils.cmyk instanceof DeviceCmykCS) {
+      // The alpha-component isn't updated by `DeviceCmykCS`, doing it manually.
+      for (let i = 3, ii = data.length; i < ii; i += 4) {
+        data[i] = 255;
+      }
+    }
     return data;
   }
 

test/test_manifest.json

@@ -2960,6 +2960,15 @@
     "rounds": 1,
     "type": "eq"
   },
+  {
+    "id": "cmykjpeg_nowasm",
+    "file": "pdfs/cmykjpeg.pdf",
+    "md5": "85d162b48ce98503a382d96f574f70a2",
+    "link": false,
+    "rounds": 1,
+    "type": "eq",
+    "useWasm": false
+  },
   {
     "id": "issue4402_reduced",
     "file": "pdfs/issue4402_reduced.pdf",