[api-minor] Use an icc profile for converting CMYK to RGB

external/iccs/LICENSE

@@ -0,0 +1,116 @@
+CC0 1.0 Universal
+
+Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator and
+subsequent owner(s) (each and all, an "owner") of an original work of
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+of additional consideration or compensation, the person associating CC0 with a
+Work (the "Affirmer"), to the extent that he or she is an owner of Copyright
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+1. Copyright and Related Rights. A Work made available under CC0 may be
+protected by copyright and related or neighboring rights ("Copyright and
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+to, the following:
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+any other legal or equitable action to disrupt the quiet enjoyment of the Work
+by the public as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason be
+judged legally invalid or ineffective under applicable law, then the Waiver
+shall be preserved to the maximum extent permitted taking into account
+Affirmer's express Statement of Purpose. In addition, to the extent the Waiver
+is so judged Affirmer hereby grants to each affected person a royalty-free,
+non transferable, non sublicensable, non exclusive, irrevocable and
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+provided by applicable law or treaty (including future time extensions), (iii)
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+promotional purposes (the "License"). The License shall be deemed effective as
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+License for any reason be judged legally invalid or ineffective under
+applicable law, such partial invalidity or ineffectiveness shall not
+invalidate the remainder of the License, and in such case Affirmer hereby
+affirms that he or she will not (i) exercise any of his or her remaining
+Copyright and Related Rights in the Work or (ii) assert any associated claims
+and causes of action with respect to the Work, in either case contrary to
+Affirmer's express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+  a. No trademark or patent rights held by Affirmer are waived, abandoned,
+  surrendered, licensed or otherwise affected by this document.
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external/iccs/README.md

@@ -0,0 +1,10 @@
+## ICC
+
+The file CGATS001Compat-v2-micro.icc used to convert colors from CMYK to RGB comes from:
+https://github.com/saucecontrol/Compact-ICC-Profiles
+
+at revision bdd84663061bc4ae95ca70decff54f581e27f702.
+
+## Licensing
+
+[CGATS001Compat-v2-micro.icc](https://github.com/saucecontrol/Compact-ICC-Profiles/blob/master/profiles/CGATS001Compat-v2-micro.icc) is under [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).

external/qcms/qcms_utils.js

@@ -16,6 +16,8 @@
 class QCMS {
   static _module = null;
 
+  static _mustAddAlpha = false;
+
   static _destBuffer = null;
 }
 
@@ -23,16 +25,25 @@ function copy_result(ptr, len) {
   // This function is called from the wasm module (it's an external
   // "C" function). Its goal is to copy the result from the wasm memory
   // to the destination buffer without any intermediate copies.
-  const { _module, _destBuffer } = QCMS;
+  const { _module, _mustAddAlpha, _destBuffer } = QCMS;
   const result = new Uint8Array(_module.memory.buffer, ptr, len);
   if (result.length === _destBuffer.length) {
     _destBuffer.set(result);
     return;
   }
-  for (let i = 0, j = 0, ii = result.length; i < ii; i += 3, j += 4) {
-    _destBuffer[j] = result[i];
-    _destBuffer[j + 1] = result[i + 1];
-    _destBuffer[j + 2] = result[i + 2];
+  if (_mustAddAlpha) {
+    for (let i = 0, j = 0, ii = result.length; i < ii; i += 3, j += 4) {
+      _destBuffer[j] = result[i];
+      _destBuffer[j + 1] = result[i + 1];
+      _destBuffer[j + 2] = result[i + 2];
+      _destBuffer[j + 3] = 255;
+    }
+  } else {
+    for (let i = 0, j = 0, ii = result.length; i < ii; i += 3, j += 4) {
+      _destBuffer[j] = result[i];
+      _destBuffer[j + 1] = result[i + 1];
+      _destBuffer[j + 2] = result[i + 2];
+    }
   }
 }
 

gulpfile.mjs

@@ -636,6 +636,13 @@ function createCMapBundle() {
   });
 }
 
+function createICCBundle() {
+  return gulp.src(["external/iccs/*.icc", "external/iccs/LICENSE"], {
+    base: "external/iccs",
+    encoding: false,
+  });
+}
+
 function createStandardFontBundle() {
   return gulp.src(
     [
@@ -1091,6 +1098,7 @@ function buildGeneric(defines, dir) {
       })
       .pipe(gulp.dest(dir + "web")),
     createCMapBundle().pipe(gulp.dest(dir + "web/cmaps")),
+    createICCBundle().pipe(gulp.dest(dir + "web/iccs")),
     createStandardFontBundle().pipe(gulp.dest(dir + "web/standard_fonts")),
     createWasmBundle().pipe(gulp.dest(dir + "web/wasm")),
 
@@ -1420,6 +1428,7 @@ gulp.task(
         createCMapBundle().pipe(
           gulp.dest(MOZCENTRAL_CONTENT_DIR + "web/cmaps")
         ),
+        createICCBundle().pipe(gulp.dest(MOZCENTRAL_CONTENT_DIR + "web/iccs")),
         createStandardFontBundle().pipe(
           gulp.dest(MOZCENTRAL_CONTENT_DIR + "web/standard_fonts")
         ),
@@ -1525,6 +1534,9 @@ gulp.task(
         createCMapBundle().pipe(
           gulp.dest(CHROME_BUILD_CONTENT_DIR + "web/cmaps")
         ),
+        createICCBundle().pipe(
+          gulp.dest(CHROME_BUILD_CONTENT_DIR + "web/iccs")
+        ),
         createStandardFontBundle().pipe(
           gulp.dest(CHROME_BUILD_CONTENT_DIR + "web/standard_fonts")
         ),
@@ -2364,6 +2376,12 @@ gulp.task(
             encoding: false,
           })
           .pipe(gulp.dest(DIST_DIR)),
+        gulp
+          .src(GENERIC_DIR + "web/iccs/**/*", {
+            base: GENERIC_DIR + "web",
+            encoding: false,
+          })
+          .pipe(gulp.dest(DIST_DIR)),
         gulp
           .src(GENERIC_DIR + "web/standard_fonts/**/*", {
             base: GENERIC_DIR + "web",

src/core/colorspace_utils.js

@@ -25,9 +25,9 @@ import {
   LabCS,
   PatternCS,
 } from "./colorspace.js";
+import { CmykICCBasedCS, IccColorSpace } from "./icc_colorspace.js";
 import { Dict, Name, Ref } from "./primitives.js";
 import { MathClamp, shadow, unreachable, warn } from "../shared/util.js";
-import { IccColorSpace } from "./icc_colorspace.js";
 import { MissingDataException } from "./core_utils.js";
 
 class ColorSpaceUtils {
@@ -205,7 +205,11 @@ class ColorSpaceUtils {
 
           if (IccColorSpace.isUsable) {
             try {
-              const iccCS = new IccColorSpace(stream.getBytes(), numComps);
+              const iccCS = new IccColorSpace(
+                stream.getBytes(),
+                "ICCBased",
+                numComps
+              );
               if (isRef) {
                 globalColorSpaceCache.set(/* name = */ null, cs[1], iccCS);
               }
@@ -285,6 +289,13 @@ class ColorSpaceUtils {
   }
 
   static get cmyk() {
+    if (IccColorSpace.isUsable) {
+      try {
+        return shadow(this, "cmyk", new CmykICCBasedCS());
+      } catch {
+        warn("CMYK fallback: DeviceCMYK");
+      }
+    }
     return shadow(this, "cmyk", new DeviceCmykCS());
   }
 }

src/core/evaluator.js

@@ -94,6 +94,7 @@ const DefaultPartialEvaluatorOptions = Object.freeze({
   useWasm: true,
   useWorkerFetch: true,
   cMapUrl: null,
+  iccUrl: null,
   standardFontDataUrl: null,
   wasmUrl: null,
 });

src/core/icc_colorspace.js

@@ -41,12 +41,12 @@ class IccColorSpace extends ColorSpace {
     qcms_drop_transformer(transformer);
   });
 
-  constructor(iccProfile, numComps) {
+  constructor(iccProfile, name, numComps) {
     if (!IccColorSpace.isUsable) {
       throw new Error("No ICC color space support");
     }
 
-    super("ICCBased", numComps);
+    super(name, numComps);
 
     let inType;
     switch (numComps) {
@@ -104,11 +104,13 @@ class IccColorSpace extends ColorSpace {
         src[i] *= scale;
       }
     }
+    QCMS._mustAddAlpha = alpha01 && dest.buffer === src.buffer;
     QCMS._destBuffer = dest.subarray(
       destOffset,
       destOffset + count * (3 + alpha01)
     );
     qcms_convert_array(this.#transformer, src);
+    QCMS._mustAddAlpha = false;
     QCMS._destBuffer = null;
   }
 
@@ -152,4 +154,21 @@ class IccColorSpace extends ColorSpace {
   }
 }
 
-export { IccColorSpace };
+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);
+  }
+
+  static setOptions({ iccUrl }) {
+    this.#iccUrl = iccUrl;
+  }
+}
+
+export { CmykICCBasedCS, IccColorSpace };

src/core/jpg.js

@@ -14,6 +14,7 @@
  */
 
 import { assert, BaseException, warn } from "../shared/util.js";
+import { ColorSpaceUtils } from "./colorspace_utils.js";
 import { grayToRGBA } from "../shared/image_utils.js";
 import { readUint16 } from "./core_utils.js";
 
@@ -1317,141 +1318,13 @@ class JpegImage {
   }
 
   _convertYcckToRgb(data) {
-    let Y, Cb, Cr, k;
-    let offset = 0;
-    for (let i = 0, length = data.length; i < length; i += 4) {
-      Y = data[i];
-      Cb = data[i + 1];
-      Cr = data[i + 2];
-      k = data[i + 3];
-
-      data[offset++] =
-        -122.67195406894 +
-        Cb *
-          (-6.60635669420364e-5 * Cb +
-            0.000437130475926232 * Cr -
-            5.4080610064599e-5 * Y +
-            0.00048449797120281 * k -
-            0.154362151871126) +
-        Cr *
-          (-0.000957964378445773 * Cr +
-            0.000817076911346625 * Y -
-            0.00477271405408747 * k +
-            1.53380253221734) +
-        Y *
-          (0.000961250184130688 * Y -
-            0.00266257332283933 * k +
-            0.48357088451265) +
-        k * (-0.000336197177618394 * k + 0.484791561490776);
-
-      data[offset++] =
-        107.268039397724 +
-        Cb *
-          (2.19927104525741e-5 * Cb -
-            0.000640992018297945 * Cr +
-            0.000659397001245577 * Y +
-            0.000426105652938837 * k -
-            0.176491792462875) +
-        Cr *
-          (-0.000778269941513683 * Cr +
-            0.00130872261408275 * Y +
-            0.000770482631801132 * k -
-            0.151051492775562) +
-        Y *
-          (0.00126935368114843 * Y -
-            0.00265090189010898 * k +
-            0.25802910206845) +
-        k * (-0.000318913117588328 * k - 0.213742400323665);
-
-      data[offset++] =
-        -20.810012546947 +
-        Cb *
-          (-0.000570115196973677 * Cb -
-            2.63409051004589e-5 * Cr +
-            0.0020741088115012 * Y -
-            0.00288260236853442 * k +
-            0.814272968359295) +
-        Cr *
-          (-1.53496057440975e-5 * Cr -
-            0.000132689043961446 * Y +
-            0.000560833691242812 * k -
-            0.195152027534049) +
-        Y *
-          (0.00174418132927582 * Y -
-            0.00255243321439347 * k +
-            0.116935020465145) +
-        k * (-0.000343531996510555 * k + 0.24165260232407);
-    }
-    // Ensure that only the converted RGB data is returned.
-    return data.subarray(0, offset);
+    this._convertYcckToCmyk(data);
+    return this._convertCmykToRgb(data);
   }
 
   _convertYcckToRgba(data) {
-    for (let i = 0, length = data.length; i < length; i += 4) {
-      const Y = data[i];
-      const Cb = data[i + 1];
-      const Cr = data[i + 2];
-      const k = data[i + 3];
-
-      data[i] =
-        -122.67195406894 +
-        Cb *
-          (-6.60635669420364e-5 * Cb +
-            0.000437130475926232 * Cr -
-            5.4080610064599e-5 * Y +
-            0.00048449797120281 * k -
-            0.154362151871126) +
-        Cr *
-          (-0.000957964378445773 * Cr +
-            0.000817076911346625 * Y -
-            0.00477271405408747 * k +
-            1.53380253221734) +
-        Y *
-          (0.000961250184130688 * Y -
-            0.00266257332283933 * k +
-            0.48357088451265) +
-        k * (-0.000336197177618394 * k + 0.484791561490776);
-
-      data[i + 1] =
-        107.268039397724 +
-        Cb *
-          (2.19927104525741e-5 * Cb -
-            0.000640992018297945 * Cr +
-            0.000659397001245577 * Y +
-            0.000426105652938837 * k -
-            0.176491792462875) +
-        Cr *
-          (-0.000778269941513683 * Cr +
-            0.00130872261408275 * Y +
-            0.000770482631801132 * k -
-            0.151051492775562) +
-        Y *
-          (0.00126935368114843 * Y -
-            0.00265090189010898 * k +
-            0.25802910206845) +
-        k * (-0.000318913117588328 * k - 0.213742400323665);
-
-      data[i + 2] =
-        -20.810012546947 +
-        Cb *
-          (-0.000570115196973677 * Cb -
-            2.63409051004589e-5 * Cr +
-            0.0020741088115012 * Y -
-            0.00288260236853442 * k +
-            0.814272968359295) +
-        Cr *
-          (-1.53496057440975e-5 * Cr -
-            0.000132689043961446 * Y +
-            0.000560833691242812 * k -
-            0.195152027534049) +
-        Y *
-          (0.00174418132927582 * Y -
-            0.00255243321439347 * k +
-            0.116935020465145) +
-        k * (-0.000343531996510555 * k + 0.24165260232407);
-      data[i + 3] = 255;
-    }
-    return data;
+    this._convertYcckToCmyk(data);
+    return this._convertCmykToRgba(data);
   }
 
   _convertYcckToCmyk(data) {
@@ -1469,140 +1342,13 @@ class JpegImage {
   }
 
   _convertCmykToRgb(data) {
-    let c, m, y, k;
-    let offset = 0;
-    for (let i = 0, length = data.length; i < length; i += 4) {
-      c = data[i];
-      m = data[i + 1];
-      y = data[i + 2];
-      k = data[i + 3];
-
-      data[offset++] =
-        255 +
-        c *
-          (-0.00006747147073602441 * c +
-            0.0008379262121013727 * m +
-            0.0002894718188643294 * y +
-            0.003264231057537806 * k -
-            1.1185611867203937) +
-        m *
-          (0.000026374107616089405 * m -
-            0.00008626949158638572 * y -
-            0.0002748769067499491 * k -
-            0.02155688794978967) +
-        y *
-          (-0.00003878099212869363 * y -
-            0.0003267808279485286 * k +
-            0.0686742238595345) -
-        k * (0.0003361971776183937 * k + 0.7430659151342254);
-
-      data[offset++] =
-        255 +
-        c *
-          (0.00013596372813588848 * c +
-            0.000924537132573585 * m +
-            0.00010567359618683593 * y +
-            0.0004791864687436512 * k -
-            0.3109689587515875) +
-        m *
-          (-0.00023545346108370344 * m +
-            0.0002702845253534714 * y +
-            0.0020200308977307156 * k -
-            0.7488052167015494) +
-        y *
-          (0.00006834815998235662 * y +
-            0.00015168452363460973 * k -
-            0.09751927774728933) -
-        k * (0.0003189131175883281 * k + 0.7364883807733168);
-
-      data[offset++] =
-        255 +
-        c *
-          (0.000013598650411385307 * c +
-            0.00012423956175490851 * m +
-            0.0004751985097583589 * y -
-            0.0000036729317476630422 * k -
-            0.05562186980264034) +
-        m *
-          (0.00016141380598724676 * m +
-            0.0009692239130725186 * y +
-            0.0007782692450036253 * k -
-            0.44015232367526463) +
-        y *
-          (5.068882914068769e-7 * y +
-            0.0017778369011375071 * k -
-            0.7591454649749609) -
-        k * (0.0003435319965105553 * k + 0.7063770186160144);
-    }
-    // Ensure that only the converted RGB data is returned.
-    return data.subarray(0, offset);
+    const count = data.length / 4;
+    ColorSpaceUtils.cmyk.getRgbBuffer(data, 0, count, data, 0, 8, 0);
+    return data.subarray(0, count * 3);
   }
 
   _convertCmykToRgba(data) {
-    for (let i = 0, length = data.length; i < length; i += 4) {
-      const c = data[i];
-      const m = data[i + 1];
-      const y = data[i + 2];
-      const k = data[i + 3];
-
-      data[i] =
-        255 +
-        c *
-          (-0.00006747147073602441 * c +
-            0.0008379262121013727 * m +
-            0.0002894718188643294 * y +
-            0.003264231057537806 * k -
-            1.1185611867203937) +
-        m *
-          (0.000026374107616089405 * m -
-            0.00008626949158638572 * y -
-            0.0002748769067499491 * k -
-            0.02155688794978967) +
-        y *
-          (-0.00003878099212869363 * y -
-            0.0003267808279485286 * k +
-            0.0686742238595345) -
-        k * (0.0003361971776183937 * k + 0.7430659151342254);
-
-      data[i + 1] =
-        255 +
-        c *
-          (0.00013596372813588848 * c +
-            0.000924537132573585 * m +
-            0.00010567359618683593 * y +
-            0.0004791864687436512 * k -
-            0.3109689587515875) +
-        m *
-          (-0.00023545346108370344 * m +
-            0.0002702845253534714 * y +
-            0.0020200308977307156 * k -
-            0.7488052167015494) +
-        y *
-          (0.00006834815998235662 * y +
-            0.00015168452363460973 * k -
-            0.09751927774728933) -
-        k * (0.0003189131175883281 * k + 0.7364883807733168);
-
-      data[i + 2] =
-        255 +
-        c *
-          (0.000013598650411385307 * c +
-            0.00012423956175490851 * m +
-            0.0004751985097583589 * y -
-            0.0000036729317476630422 * k -
-            0.05562186980264034) +
-        m *
-          (0.00016141380598724676 * m +
-            0.0009692239130725186 * y +
-            0.0007782692450036253 * k -
-            0.44015232367526463) +
-        y *
-          (5.068882914068769e-7 * y +
-            0.0017778369011375071 * k -
-            0.7591454649749609) -
-        k * (0.0003435319965105553 * k + 0.7063770186160144);
-      data[i + 3] = 255;
-    }
+    ColorSpaceUtils.cmyk.getRgbBuffer(data, 0, data.length / 4, data, 0, 8, 1);
     return data;
   }
 

src/core/pdf_manager.js

@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 
+import { CmykICCBasedCS, IccColorSpace } from "./icc_colorspace.js";
 import {
   createValidAbsoluteUrl,
   FeatureTest,
@@ -20,7 +21,6 @@ import {
   warn,
 } from "../shared/util.js";
 import { ChunkedStreamManager } from "./chunked_stream.js";
-import { IccColorSpace } from "./icc_colorspace.js";
 import { ImageResizer } from "./image_resizer.js";
 import { JpegStream } from "./jpeg_stream.js";
 import { JpxImage } from "./jpx.js";
@@ -78,6 +78,7 @@ class BasePdfManager {
     const options = { ...evaluatorOptions, handler };
     JpxImage.setOptions(options);
     IccColorSpace.setOptions(options);
+    CmykICCBasedCS.setOptions(options);
   }
 
   get docId() {

src/display/api.js

@@ -125,6 +125,8 @@ const RENDERING_CANCELLED_TIMEOUT = 100; // ms
  * @property {Object} [CMapReaderFactory] - The factory that will be used when
  *   reading built-in CMap files.
  *   The default value is {DOMCMapReaderFactory}.
+ * @property {string} [iccUrl] - The URL where the predefined ICC profiles are
+ *   located. Include the trailing slash.
  * @property {boolean} [useSystemFonts] - When `true`, fonts that aren't
  *   embedded in the PDF document will fallback to a system font.
  *   The default value is `true` in web environments and `false` in Node.js;
@@ -269,6 +271,7 @@ function getDocument(src = {}) {
     (typeof PDFJSDev !== "undefined" && PDFJSDev.test("GENERIC") && isNodeJS
       ? NodeCMapReaderFactory
       : DOMCMapReaderFactory);
+  const iccUrl = getFactoryUrlProp(src.iccUrl);
   const standardFontDataUrl = getFactoryUrlProp(src.standardFontDataUrl);
   const StandardFontDataFactory =
     src.StandardFontDataFactory ||
@@ -418,6 +421,7 @@ function getDocument(src = {}) {
       useWasm,
       useWorkerFetch,
       cMapUrl,
+      iccUrl,
       standardFontDataUrl,
       wasmUrl,
     },

test/driver.js

@@ -30,6 +30,7 @@ const { GenericL10n, parseQueryString, SimpleLinkService } = pdfjsViewer;
 
 const WAITING_TIME = 100; // ms
 const CMAP_URL = "/build/generic/web/cmaps/";
+const ICC_URL = "/build/generic/web/iccs/";
 const STANDARD_FONT_DATA_URL = "/build/generic/web/standard_fonts/";
 const WASM_URL = "/build/generic/web/wasm/";
 const IMAGE_RESOURCES_PATH = "/web/images/";
@@ -637,6 +638,7 @@ class Driver {
           url: new URL(task.file, window.location),
           password: task.password,
           cMapUrl: CMAP_URL,
+          iccUrl: ICC_URL,
           standardFontDataUrl: STANDARD_FONT_DATA_URL,
           wasmUrl: WASM_URL,
           disableAutoFetch: !task.enableAutoFetch,

web/app_options.js

@@ -406,6 +406,17 @@ const defaultOptions = {
     value: false,
     kind: OptionKind.API,
   },
+  iccUrl: {
+    /** @type {string} */
+    value:
+      // eslint-disable-next-line no-nested-ternary
+      typeof PDFJSDev === "undefined"
+        ? "../external/iccs/"
+        : PDFJSDev.test("MOZCENTRAL")
+          ? "resource://pdf.js/web/iccs/"
+          : "../web/iccs/",
+    kind: OptionKind.API,
+  },
   isEvalSupported: {
     /** @type {boolean} */
     value: true,