зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1299172 - HTMLMediaElement::StreamSizeListener spring cleaning. r=jesup
MozReview-Commit-ID: 25lt1j8t1Xh --HG-- extra : rebase_source : e972d008c5e80059dd10031df38cf400cc6c9650
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@ -279,7 +279,7 @@ public:
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/**
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* This listener observes the first video frame to arrive with a non-empty size,
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* and calls HTMLMediaElement::ReceivedMediaStreamInitialSize() with that size.
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* and calls HTMLMediaElement::UpdateInitialMediaSize() with that size.
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*/
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class HTMLMediaElement::StreamSizeListener : public DirectMediaStreamTrackListener {
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public:
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@ -287,13 +287,17 @@ public:
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mElement(aElement),
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mInitialSizeFound(false)
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{}
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void Forget() { mElement = nullptr; }
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void ReceivedSize(gfx::IntSize aSize)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (!mElement) {
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return;
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}
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RefPtr<HTMLMediaElement> deathGrip = mElement;
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mElement->UpdateInitialMediaSize(aSize);
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}
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@ -302,9 +306,15 @@ public:
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StreamTime aTrackOffset,
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const MediaSegment& aMedia) override
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{
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if (mInitialSizeFound || aMedia.GetType() != MediaSegment::VIDEO) {
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if (mInitialSizeFound) {
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return;
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}
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if (aMedia.GetType() != MediaSegment::VIDEO) {
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MOZ_ASSERT(false, "Should only lock on to a video track");
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return;
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}
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const VideoSegment& video = static_cast<const VideoSegment&>(aMedia);
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for (VideoSegment::ConstChunkIterator c(video); !c.IsEnded(); c.Next()) {
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if (c->mFrame.GetIntrinsicSize() != gfx::IntSize(0,0)) {
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@ -326,7 +336,9 @@ private:
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// These fields may only be accessed on the main thread
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HTMLMediaElement* mElement;
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// These fields may only be accessed on the MSG thread
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// These fields may only be accessed on the MSG's appending thread.
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// (this is a direct listener so we get called by whoever is producing
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// this track's data)
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bool mInitialSizeFound;
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};
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