From 64d65e096bd762bfa54c362a83edd8dcd5ba2e53 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Mon, 21 Jan 2019 13:58:20 +0100
Subject: Make resuming of decoding work for anonymous decoders.

---
 image/IDecodingTask.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'image/IDecodingTask.cpp')

diff --git a/image/IDecodingTask.cpp b/image/IDecodingTask.cpp
index a067e7a7d..6e2f039be 100644
--- a/image/IDecodingTask.cpp
+++ b/image/IDecodingTask.cpp
@@ -142,8 +142,10 @@ MetadataDecodingTask::Run()
 // AnonymousDecodingTask implementation.
 ///////////////////////////////////////////////////////////////////////////////
 
-AnonymousDecodingTask::AnonymousDecodingTask(NotNull<Decoder*> aDecoder)
+AnonymousDecodingTask::AnonymousDecodingTask(NotNull<Decoder*> aDecoder,
+                                             bool aResumable)
   : mDecoder(aDecoder)
+  , mResumable(aResumable)
 { }
 
 void
@@ -168,5 +170,16 @@ AnonymousDecodingTask::Run()
   }
 }
 
+void
+AnonymousDecodingTask::Resume()
+{
+  // Anonymous decoders normally get all their data at once. We have some situations
+  // where they don't. If explicitly requested, resuming should be supported.
+  if (mResumable) {
+    RefPtr<AnonymousDecodingTask> self(this);
+    NS_DispatchToMainThread(NS_NewRunnableFunction([self]() -> void { self->Run(); }));
+  }
+}
+
 } // namespace image
 } // namespace mozilla
-- 
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