Bug 1224973 - Part 2: Set MediaDecoder visibility via NotifyOwnerActivityChanged. r=cpearce,jwwang

Make MediaDecoder::SetElementVisibility private.

MozReview-Commit-ID: GjCuSNPalkE

dom/html/HTMLMediaElement.cpp

@@ -2774,7 +2774,7 @@ nsresult HTMLMediaElement::BindToTree(nsIDocument* aDocument, nsIContent* aParen
   if (mDecoder) {
     // When the MediaElement is binding to tree, the dormant status is
     // aligned to document's hidden status.
-    mDecoder->NotifyOwnerActivityChanged();
+    mDecoder->NotifyOwnerActivityChanged(!IsHidden());
   }
 
   return rv;
@@ -2872,7 +2872,7 @@ void HTMLMediaElement::UnbindFromTree(bool aDeep,
 
   if (mDecoder) {
     MOZ_ASSERT(IsHidden());
-    mDecoder->NotifyOwnerActivityChanged();
+    mDecoder->NotifyOwnerActivityChanged(false);
   }
 }
 
@@ -4532,10 +4532,8 @@ void HTMLMediaElement::NotifyOwnerDocumentActivityChanged()
 bool
 HTMLMediaElement::NotifyOwnerDocumentActivityChangedInternal()
 {
-  nsIDocument* ownerDoc = OwnerDoc();
   if (mDecoder && !IsBeingDestroyed()) {
-    mDecoder->SetElementVisibility(!ownerDoc->Hidden());
-    mDecoder->NotifyOwnerActivityChanged();
+    mDecoder->NotifyOwnerActivityChanged(!IsHidden());
   }
 
   bool pauseElement = !IsActive();

dom/media/MediaDecoder.cpp

@@ -287,7 +287,7 @@ MediaDecoder::ResourceCallback::NotifyBytesConsumed(int64_t aBytes,
 }
 
 void
-MediaDecoder::NotifyOwnerActivityChanged()
+MediaDecoder::NotifyOwnerActivityChanged(bool aIsVisible)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
@@ -295,6 +295,8 @@ MediaDecoder::NotifyOwnerActivityChanged()
     return;
   }
 
+  SetElementVisibility(aIsVisible);
+
   UpdateDormantState(false /* aDormantTimeout */, false /* aActivity */);
   // Start dormant timer if necessary
   StartDormantTimer();
@@ -1365,6 +1367,13 @@ MediaDecoder::DurationChanged()
   }
 }
 
+void
+MediaDecoder::SetElementVisibility(bool aIsVisible)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  mIsVisible = aIsVisible;
+}
+
 void
 MediaDecoder::UpdateEstimatedMediaDuration(int64_t aDuration)
 {

dom/media/MediaDecoder.h

@@ -180,7 +180,7 @@ public:
   // Dormant state is a state to free all scarce media resources
   //  (like hw video codec), did not decoding and stay dormant.
   // It is used to share scarece media resources in system.
-  virtual void NotifyOwnerActivityChanged();
+  virtual void NotifyOwnerActivityChanged(bool aIsVisible);
 
   void UpdateDormantState(bool aDormantTimeout, bool aActivity);
 
@@ -250,9 +250,6 @@ protected:
   void UpdateEstimatedMediaDuration(int64_t aDuration) override;
 
 public:
-  // Called from HTMLMediaElement when owner document activity changes
-  virtual void SetElementVisibility(bool aIsVisible) {}
-
   // Set a flag indicating whether random seeking is supported
   void SetMediaSeekable(bool aMediaSeekable);
   // Set a flag indicating whether seeking is supported only in buffered ranges
@@ -368,6 +365,9 @@ private:
   void SetAudioChannel(dom::AudioChannel aChannel) { mAudioChannel = aChannel; }
   dom::AudioChannel GetAudioChannel() { return mAudioChannel; }
 
+  // Called from HTMLMediaElement when owner document activity changes
+  virtual void SetElementVisibility(bool aIsVisible);
+
   /******
    * The following methods must only be called on the main
    * thread.

dom/media/omx/MediaOmxCommonDecoder.cpp

@@ -252,6 +252,7 @@ void
 MediaOmxCommonDecoder::SetElementVisibility(bool aIsVisible)
 {
   MOZ_ASSERT(NS_IsMainThread());
+  MediaDecoder::SetElementVisibility(aIsVisible);
   if (mAudioOffloadPlayer) {
     mAudioOffloadPlayer->SetElementVisibility(aIsVisible);
   }