1 files changed, 84 insertions, 0 deletions
diff --git a/image/build/nsImageModule.cpp b/image/build/nsImageModule.cpp
new file mode 100644
index 0000000000..b3c70f9bd0
--- /dev/null
+++ b/image/build/nsImageModule.cpp
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsImageModule.h"
+
+#include "mozilla/ModuleUtils.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/StaticPrefs_image.h"
+
+#include "DecodePool.h"
+#include "ImageFactory.h"
+#include "nsICategoryManager.h"
+#include "nsServiceManagerUtils.h"
+#include "ShutdownTracker.h"
+#include "SurfaceCache.h"
+#include "imgLoader.h"
+
+using namespace mozilla::image;
+
+struct ImageEnablementCookie {
+  bool (*mIsEnabled)();
+  const nsLiteralCString mMimeType;
+};
+
+static void UpdateDocumentViewerRegistration(const char* aPref, void* aData) {
+  auto* cookie = static_cast<ImageEnablementCookie*>(aData);
+
+  nsCOMPtr<nsICategoryManager> catMan =
+      do_GetService(NS_CATEGORYMANAGER_CONTRACTID);
+  if (!catMan) {
+    return;
+  }
+
+  static nsLiteralCString kCategory = "Gecko-Content-Viewers"_ns;
+  static nsLiteralCString kContractId =
+      "@mozilla.org/content/plugin/document-loader-factory;1"_ns;
+
+  if (cookie->mIsEnabled()) {
+    catMan->AddCategoryEntry(kCategory, cookie->mMimeType, kContractId,
+                             false /* aPersist */, true /* aReplace */);
+  } else {
+    catMan->DeleteCategoryEntry(
+        kCategory, cookie->mMimeType, false /* aPersist */
+    );
+  }
+}
+
+static bool sInitialized = false;
+nsresult mozilla::image::EnsureModuleInitialized() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (sInitialized) {
+    return NS_OK;
+  }
+
+  static ImageEnablementCookie kAVIFCookie = {
+      mozilla::StaticPrefs::image_avif_enabled, "image/avif"_ns};
+  static ImageEnablementCookie kJXLCookie = {
+      mozilla::StaticPrefs::image_jxl_enabled, "image/jxl"_ns};
+  Preferences::RegisterCallbackAndCall(UpdateDocumentViewerRegistration,
+                                       "image.avif.enabled", &kAVIFCookie);
+  Preferences::RegisterCallbackAndCall(UpdateDocumentViewerRegistration,
+                                       "image.jxl.enabled", &kJXLCookie);
+
+  mozilla::image::ShutdownTracker::Initialize();
+  mozilla::image::ImageFactory::Initialize();
+  mozilla::image::DecodePool::Initialize();
+  mozilla::image::SurfaceCache::Initialize();
+  imgLoader::GlobalInit();
+  sInitialized = true;
+  return NS_OK;
+}
+
+void mozilla::image::ShutdownModule() {
+  if (!sInitialized) {
+    return;
+  }
+  imgLoader::Shutdown();
+  mozilla::image::SurfaceCache::Shutdown();
+  sInitialized = false;
+}