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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/generic/nsVideoFrame.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/generic/nsVideoFrame.cpp')
-rw-r--r--layout/generic/nsVideoFrame.cpp695
1 files changed, 695 insertions, 0 deletions
diff --git a/layout/generic/nsVideoFrame.cpp b/layout/generic/nsVideoFrame.cpp
new file mode 100644
index 000000000..9f27684a7
--- /dev/null
+++ b/layout/generic/nsVideoFrame.cpp
@@ -0,0 +1,695 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+/* rendering object for the HTML <video> element */
+
+#include "nsVideoFrame.h"
+
+#include "nsCOMPtr.h"
+#include "nsGkAtoms.h"
+
+#include "mozilla/dom/HTMLVideoElement.h"
+#include "nsIDOMHTMLImageElement.h"
+#include "nsDisplayList.h"
+#include "nsGenericHTMLElement.h"
+#include "nsPresContext.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsBoxLayoutState.h"
+#include "nsBoxFrame.h"
+#include "nsImageFrame.h"
+#include "nsIImageLoadingContent.h"
+#include "nsContentUtils.h"
+#include "ImageContainer.h"
+#include "ImageLayers.h"
+#include "nsContentList.h"
+#include "nsStyleUtil.h"
+#include <algorithm>
+
+using namespace mozilla;
+using namespace mozilla::layers;
+using namespace mozilla::dom;
+using namespace mozilla::gfx;
+
+nsIFrame*
+NS_NewHTMLVideoFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsVideoFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsVideoFrame)
+
+// A matrix to obtain a correct-rotated video frame.
+static Matrix
+ComputeRotationMatrix(gfxFloat aRotatedWidth,
+ gfxFloat aRotatedHeight,
+ VideoInfo::Rotation aDegrees)
+{
+ Matrix shiftVideoCenterToOrigin;
+ if (aDegrees == VideoInfo::Rotation::kDegree_90 ||
+ aDegrees == VideoInfo::Rotation::kDegree_270) {
+ shiftVideoCenterToOrigin = Matrix::Translation(-aRotatedHeight / 2.0,
+ -aRotatedWidth / 2.0);
+ } else {
+ shiftVideoCenterToOrigin = Matrix::Translation(-aRotatedWidth / 2.0,
+ -aRotatedHeight / 2.0);
+ }
+
+ Matrix rotation = Matrix::Rotation(gfx::Float(aDegrees / 180.0 * M_PI));
+ Matrix shiftLeftTopToOrigin = Matrix::Translation(aRotatedWidth / 2.0,
+ aRotatedHeight / 2.0);
+ return shiftVideoCenterToOrigin * rotation * shiftLeftTopToOrigin;
+}
+
+static void
+SwapScaleWidthHeightForRotation(IntSize& aSize, VideoInfo::Rotation aDegrees)
+{
+ if (aDegrees == VideoInfo::Rotation::kDegree_90 ||
+ aDegrees == VideoInfo::Rotation::kDegree_270) {
+ int32_t tmpWidth = aSize.width;
+ aSize.width = aSize.height;
+ aSize.height = tmpWidth;
+ }
+}
+
+nsVideoFrame::nsVideoFrame(nsStyleContext* aContext)
+ : nsContainerFrame(aContext)
+{
+ EnableVisibilityTracking();
+}
+
+nsVideoFrame::~nsVideoFrame()
+{
+}
+
+NS_QUERYFRAME_HEAD(nsVideoFrame)
+ NS_QUERYFRAME_ENTRY(nsVideoFrame)
+ NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
+NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
+
+nsresult
+nsVideoFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
+{
+ nsNodeInfoManager *nodeInfoManager = GetContent()->GetComposedDoc()->NodeInfoManager();
+ RefPtr<NodeInfo> nodeInfo;
+ Element *element;
+
+ if (HasVideoElement()) {
+ // Create an anonymous image element as a child to hold the poster
+ // image. We may not have a poster image now, but one could be added
+ // before we load, or on a subsequent load.
+ nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::img,
+ nullptr,
+ kNameSpaceID_XHTML,
+ nsIDOMNode::ELEMENT_NODE);
+ NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
+ element = NS_NewHTMLImageElement(nodeInfo.forget());
+ mPosterImage = element;
+ NS_ENSURE_TRUE(mPosterImage, NS_ERROR_OUT_OF_MEMORY);
+
+ // Set the nsImageLoadingContent::ImageState() to 0. This means that the
+ // image will always report its state as 0, so it will never be reframed
+ // to show frames for loading or the broken image icon. This is important,
+ // as the image is native anonymous, and so can't be reframed (currently).
+ nsCOMPtr<nsIImageLoadingContent> imgContent = do_QueryInterface(mPosterImage);
+ NS_ENSURE_TRUE(imgContent, NS_ERROR_FAILURE);
+
+ imgContent->ForceImageState(true, 0);
+ // And now have it update its internal state
+ element->UpdateState(false);
+
+ UpdatePosterSource(false);
+
+ if (!aElements.AppendElement(mPosterImage))
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ // Set up the caption overlay div for showing any TextTrack data
+ nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::div,
+ nullptr,
+ kNameSpaceID_XHTML,
+ nsIDOMNode::ELEMENT_NODE);
+ NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
+ mCaptionDiv = NS_NewHTMLDivElement(nodeInfo.forget());
+ NS_ENSURE_TRUE(mCaptionDiv, NS_ERROR_OUT_OF_MEMORY);
+ nsGenericHTMLElement* div = static_cast<nsGenericHTMLElement*>(mCaptionDiv.get());
+ div->SetClassName(NS_LITERAL_STRING("caption-box"));
+
+ if (!aElements.AppendElement(mCaptionDiv))
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ // Set up "videocontrols" XUL element which will be XBL-bound to the
+ // actual controls.
+ nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::videocontrols,
+ nullptr,
+ kNameSpaceID_XUL,
+ nsIDOMNode::ELEMENT_NODE);
+ NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
+
+ NS_TrustedNewXULElement(getter_AddRefs(mVideoControls), nodeInfo.forget());
+ if (!aElements.AppendElement(mVideoControls))
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ return NS_OK;
+}
+
+void
+nsVideoFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
+ uint32_t aFliter)
+{
+ if (mPosterImage) {
+ aElements.AppendElement(mPosterImage);
+ }
+
+ if (mVideoControls) {
+ aElements.AppendElement(mVideoControls);
+ }
+
+ if (mCaptionDiv) {
+ aElements.AppendElement(mCaptionDiv);
+ }
+}
+
+void
+nsVideoFrame::DestroyFrom(nsIFrame* aDestructRoot)
+{
+ nsContentUtils::DestroyAnonymousContent(&mCaptionDiv);
+ nsContentUtils::DestroyAnonymousContent(&mVideoControls);
+ nsContentUtils::DestroyAnonymousContent(&mPosterImage);
+ nsContainerFrame::DestroyFrom(aDestructRoot);
+}
+
+bool
+nsVideoFrame::IsLeaf() const
+{
+ return true;
+}
+
+already_AddRefed<Layer>
+nsVideoFrame::BuildLayer(nsDisplayListBuilder* aBuilder,
+ LayerManager* aManager,
+ nsDisplayItem* aItem,
+ const ContainerLayerParameters& aContainerParameters)
+{
+ nsRect area = GetContentRectRelativeToSelf() + aItem->ToReferenceFrame();
+ HTMLVideoElement* element = static_cast<HTMLVideoElement*>(GetContent());
+
+ nsIntSize videoSizeInPx;
+ if (NS_FAILED(element->GetVideoSize(&videoSizeInPx)) ||
+ area.IsEmpty()) {
+ return nullptr;
+ }
+
+ RefPtr<ImageContainer> container = element->GetImageContainer();
+ if (!container)
+ return nullptr;
+
+ // Retrieve the size of the decoded video frame, before being scaled
+ // by pixel aspect ratio.
+ mozilla::gfx::IntSize frameSize = container->GetCurrentSize();
+ if (frameSize.width == 0 || frameSize.height == 0) {
+ // No image, or zero-sized image. No point creating a layer.
+ return nullptr;
+ }
+
+ // Convert video size from pixel units into app units, to get an aspect-ratio
+ // (which has to be represented as a nsSize) and an IntrinsicSize that we
+ // can pass to ComputeObjectRenderRect.
+ nsSize aspectRatio(nsPresContext::CSSPixelsToAppUnits(videoSizeInPx.width),
+ nsPresContext::CSSPixelsToAppUnits(videoSizeInPx.height));
+ IntrinsicSize intrinsicSize;
+ intrinsicSize.width.SetCoordValue(aspectRatio.width);
+ intrinsicSize.height.SetCoordValue(aspectRatio.height);
+
+ nsRect dest = nsLayoutUtils::ComputeObjectDestRect(area,
+ intrinsicSize,
+ aspectRatio,
+ StylePosition());
+
+ gfxRect destGFXRect = PresContext()->AppUnitsToGfxUnits(dest);
+ destGFXRect.Round();
+ if (destGFXRect.IsEmpty()) {
+ return nullptr;
+ }
+
+ VideoInfo::Rotation rotationDeg = element->RotationDegrees();
+ IntSize scaleHint(static_cast<int32_t>(destGFXRect.Width()),
+ static_cast<int32_t>(destGFXRect.Height()));
+ // scaleHint is set regardless of rotation, so swap w/h if needed.
+ SwapScaleWidthHeightForRotation(scaleHint, rotationDeg);
+ container->SetScaleHint(scaleHint);
+
+ RefPtr<ImageLayer> layer = static_cast<ImageLayer*>
+ (aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, aItem));
+ if (!layer) {
+ layer = aManager->CreateImageLayer();
+ if (!layer)
+ return nullptr;
+ }
+
+ layer->SetContainer(container);
+ layer->SetSamplingFilter(nsLayoutUtils::GetSamplingFilterForFrame(this));
+ // Set a transform on the layer to draw the video in the right place
+ gfxPoint p = destGFXRect.TopLeft() + aContainerParameters.mOffset;
+
+ Matrix preTransform = ComputeRotationMatrix(destGFXRect.Width(),
+ destGFXRect.Height(),
+ rotationDeg);
+
+ Matrix transform = preTransform * Matrix::Translation(p.x, p.y);
+
+ layer->SetBaseTransform(gfx::Matrix4x4::From2D(transform));
+ layer->SetScaleToSize(scaleHint, ScaleMode::STRETCH);
+ RefPtr<Layer> result = layer.forget();
+ return result.forget();
+}
+
+class DispatchResizeToControls : public Runnable
+{
+public:
+ explicit DispatchResizeToControls(nsIContent* aContent)
+ : mContent(aContent) {}
+ NS_IMETHOD Run() override {
+ nsContentUtils::DispatchTrustedEvent(mContent->OwnerDoc(), mContent,
+ NS_LITERAL_STRING("resizevideocontrols"),
+ false, false);
+ return NS_OK;
+ }
+ nsCOMPtr<nsIContent> mContent;
+};
+
+void
+nsVideoFrame::Reflow(nsPresContext* aPresContext,
+ ReflowOutput& aMetrics,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus)
+{
+ MarkInReflow();
+ DO_GLOBAL_REFLOW_COUNT("nsVideoFrame");
+ DISPLAY_REFLOW(aPresContext, this, aReflowInput, aMetrics, aStatus);
+ NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
+ ("enter nsVideoFrame::Reflow: availSize=%d,%d",
+ aReflowInput.AvailableWidth(),
+ aReflowInput.AvailableHeight()));
+
+ NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
+
+ aStatus = NS_FRAME_COMPLETE;
+
+ aMetrics.Width() = aReflowInput.ComputedWidth();
+ aMetrics.Height() = aReflowInput.ComputedHeight();
+
+ // stash this away so we can compute our inner area later
+ mBorderPadding = aReflowInput.ComputedPhysicalBorderPadding();
+
+ aMetrics.Width() += mBorderPadding.left + mBorderPadding.right;
+ aMetrics.Height() += mBorderPadding.top + mBorderPadding.bottom;
+
+ // Reflow the child frames. We may have up to two, an image frame
+ // which is the poster, and a box frame, which is the video controls.
+ for (nsIFrame* child : mFrames) {
+ if (child->GetContent() == mPosterImage) {
+ // Reflow the poster frame.
+ nsImageFrame* imageFrame = static_cast<nsImageFrame*>(child);
+ ReflowOutput kidDesiredSize(aReflowInput);
+ WritingMode wm = imageFrame->GetWritingMode();
+ LogicalSize availableSize = aReflowInput.AvailableSize(wm);
+ LogicalSize cbSize = aMetrics.Size(aMetrics.GetWritingMode()).
+ ConvertTo(wm, aMetrics.GetWritingMode());
+ ReflowInput kidReflowInput(aPresContext,
+ aReflowInput,
+ imageFrame,
+ availableSize,
+ &cbSize);
+
+ nsRect posterRenderRect;
+ if (ShouldDisplayPoster()) {
+ posterRenderRect =
+ nsRect(nsPoint(mBorderPadding.left, mBorderPadding.top),
+ nsSize(aReflowInput.ComputedWidth(),
+ aReflowInput.ComputedHeight()));
+ }
+ kidReflowInput.SetComputedWidth(posterRenderRect.width);
+ kidReflowInput.SetComputedHeight(posterRenderRect.height);
+ ReflowChild(imageFrame, aPresContext, kidDesiredSize, kidReflowInput,
+ posterRenderRect.x, posterRenderRect.y, 0, aStatus);
+ FinishReflowChild(imageFrame, aPresContext,
+ kidDesiredSize, &kidReflowInput,
+ posterRenderRect.x, posterRenderRect.y, 0);
+ } else if (child->GetContent() == mVideoControls) {
+ // Reflow the video controls frame.
+ nsBoxLayoutState boxState(PresContext(), aReflowInput.mRenderingContext);
+ nsSize size = child->GetSize();
+ nsBoxFrame::LayoutChildAt(boxState,
+ child,
+ nsRect(mBorderPadding.left,
+ mBorderPadding.top,
+ aReflowInput.ComputedWidth(),
+ aReflowInput.ComputedHeight()));
+ if (child->GetSize() != size) {
+ RefPtr<Runnable> event = new DispatchResizeToControls(child->GetContent());
+ nsContentUtils::AddScriptRunner(event);
+ }
+ } else if (child->GetContent() == mCaptionDiv) {
+ // Reflow to caption div
+ ReflowOutput kidDesiredSize(aReflowInput);
+ WritingMode wm = child->GetWritingMode();
+ LogicalSize availableSize = aReflowInput.AvailableSize(wm);
+ LogicalSize cbSize = aMetrics.Size(aMetrics.GetWritingMode()).
+ ConvertTo(wm, aMetrics.GetWritingMode());
+ ReflowInput kidReflowInput(aPresContext,
+ aReflowInput,
+ child,
+ availableSize,
+ &cbSize);
+ nsSize size(aReflowInput.ComputedWidth(), aReflowInput.ComputedHeight());
+ size.width -= kidReflowInput.ComputedPhysicalBorderPadding().LeftRight();
+ size.height -= kidReflowInput.ComputedPhysicalBorderPadding().TopBottom();
+
+ kidReflowInput.SetComputedWidth(std::max(size.width, 0));
+ kidReflowInput.SetComputedHeight(std::max(size.height, 0));
+
+ ReflowChild(child, aPresContext, kidDesiredSize, kidReflowInput,
+ mBorderPadding.left, mBorderPadding.top, 0, aStatus);
+ FinishReflowChild(child, aPresContext,
+ kidDesiredSize, &kidReflowInput,
+ mBorderPadding.left, mBorderPadding.top, 0);
+ }
+ }
+ aMetrics.SetOverflowAreasToDesiredBounds();
+
+ FinishAndStoreOverflow(&aMetrics);
+
+ NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
+ ("exit nsVideoFrame::Reflow: size=%d,%d",
+ aMetrics.Width(), aMetrics.Height()));
+ NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aMetrics);
+}
+
+class nsDisplayVideo : public nsDisplayItem {
+public:
+ nsDisplayVideo(nsDisplayListBuilder* aBuilder, nsVideoFrame* aFrame)
+ : nsDisplayItem(aBuilder, aFrame)
+ {
+ MOZ_COUNT_CTOR(nsDisplayVideo);
+ }
+#ifdef NS_BUILD_REFCNT_LOGGING
+ virtual ~nsDisplayVideo() {
+ MOZ_COUNT_DTOR(nsDisplayVideo);
+ }
+#endif
+
+ NS_DISPLAY_DECL_NAME("Video", TYPE_VIDEO)
+
+ // It would be great if we could override GetOpaqueRegion to return nonempty here,
+ // but it's probably not safe to do so in general. Video frames are
+ // updated asynchronously from decoder threads, and it's possible that
+ // we might have an opaque video frame when GetOpaqueRegion is called, but
+ // when we come to paint, the video frame is transparent or has gone
+ // away completely (e.g. because of a decoder error). The problem would
+ // be especially acute if we have off-main-thread rendering.
+
+ virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) override
+ {
+ *aSnap = true;
+ nsIFrame* f = Frame();
+ return f->GetContentRectRelativeToSelf() + ToReferenceFrame();
+ }
+
+ virtual already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
+ LayerManager* aManager,
+ const ContainerLayerParameters& aContainerParameters) override
+ {
+ return static_cast<nsVideoFrame*>(mFrame)->BuildLayer(aBuilder, aManager, this, aContainerParameters);
+ }
+
+ virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
+ LayerManager* aManager,
+ const ContainerLayerParameters& aParameters) override
+ {
+ if (aManager->IsCompositingCheap()) {
+ // Since ImageLayers don't require additional memory of the
+ // video frames we have to have anyway, we can't save much by
+ // making layers inactive. Also, for many accelerated layer
+ // managers calling imageContainer->GetCurrentAsSurface can be
+ // very expensive. So just always be active when compositing is
+ // cheap (i.e. hardware accelerated).
+ return LAYER_ACTIVE;
+ }
+ HTMLMediaElement* elem =
+ static_cast<HTMLMediaElement*>(mFrame->GetContent());
+ return elem->IsPotentiallyPlaying() ? LAYER_ACTIVE_FORCE : LAYER_INACTIVE;
+ }
+};
+
+void
+nsVideoFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists)
+{
+ if (!IsVisibleForPainting(aBuilder))
+ return;
+
+ DO_GLOBAL_REFLOW_COUNT_DSP("nsVideoFrame");
+
+ DisplayBorderBackgroundOutline(aBuilder, aLists);
+
+ const bool shouldDisplayPoster = ShouldDisplayPoster();
+
+ // NOTE: If we're displaying a poster image (instead of video data), we can
+ // trust the nsImageFrame to constrain its drawing to its content rect
+ // (which happens to be the same as our content rect).
+ uint32_t clipFlags;
+ if (shouldDisplayPoster ||
+ !nsStyleUtil::ObjectPropsMightCauseOverflow(StylePosition())) {
+ clipFlags =
+ DisplayListClipState::ASSUME_DRAWING_RESTRICTED_TO_CONTENT_RECT;
+ } else {
+ clipFlags = 0;
+ }
+
+ DisplayListClipState::AutoClipContainingBlockDescendantsToContentBox
+ clip(aBuilder, this, clipFlags);
+
+ if (HasVideoElement() && !shouldDisplayPoster) {
+ aLists.Content()->AppendNewToTop(
+ new (aBuilder) nsDisplayVideo(aBuilder, this));
+ }
+
+ // Add child frames to display list. We expect various children,
+ // but only want to draw mPosterImage conditionally. Others we
+ // always add to the display list.
+ for (nsIFrame* child : mFrames) {
+ if (child->GetContent() != mPosterImage || shouldDisplayPoster) {
+ child->BuildDisplayListForStackingContext(aBuilder,
+ aDirtyRect - child->GetOffsetTo(this),
+ aLists.Content());
+ } else if (child->GetType() == nsGkAtoms::boxFrame) {
+ child->BuildDisplayListForStackingContext(aBuilder,
+ aDirtyRect - child->GetOffsetTo(this),
+ aLists.Content());
+ }
+ }
+}
+
+nsIAtom*
+nsVideoFrame::GetType() const
+{
+ return nsGkAtoms::HTMLVideoFrame;
+}
+
+#ifdef ACCESSIBILITY
+a11y::AccType
+nsVideoFrame::AccessibleType()
+{
+ return a11y::eHTMLMediaType;
+}
+#endif
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult
+nsVideoFrame::GetFrameName(nsAString& aResult) const
+{
+ return MakeFrameName(NS_LITERAL_STRING("HTMLVideo"), aResult);
+}
+#endif
+
+LogicalSize
+nsVideoFrame::ComputeSize(nsRenderingContext *aRenderingContext,
+ WritingMode aWM,
+ const LogicalSize& aCBSize,
+ nscoord aAvailableISize,
+ const LogicalSize& aMargin,
+ const LogicalSize& aBorder,
+ const LogicalSize& aPadding,
+ ComputeSizeFlags aFlags)
+{
+ nsSize size = GetVideoIntrinsicSize(aRenderingContext);
+
+ IntrinsicSize intrinsicSize;
+ intrinsicSize.width.SetCoordValue(size.width);
+ intrinsicSize.height.SetCoordValue(size.height);
+
+ // Only video elements have an intrinsic ratio.
+ nsSize intrinsicRatio = HasVideoElement() ? size : nsSize(0, 0);
+
+ return ComputeSizeWithIntrinsicDimensions(aRenderingContext, aWM,
+ intrinsicSize, intrinsicRatio,
+ aCBSize, aMargin, aBorder, aPadding,
+ aFlags);
+}
+
+nscoord nsVideoFrame::GetMinISize(nsRenderingContext *aRenderingContext)
+{
+ nsSize size = GetVideoIntrinsicSize(aRenderingContext);
+ nscoord result = GetWritingMode().IsVertical() ? size.height : size.width;
+ DISPLAY_MIN_WIDTH(this, result);
+ return result;
+}
+
+nscoord nsVideoFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
+{
+ nsSize size = GetVideoIntrinsicSize(aRenderingContext);
+ nscoord result = GetWritingMode().IsVertical() ? size.height : size.width;
+ DISPLAY_PREF_WIDTH(this, result);
+ return result;
+}
+
+nsSize nsVideoFrame::GetIntrinsicRatio()
+{
+ if (!HasVideoElement()) {
+ // Audio elements have no intrinsic ratio.
+ return nsSize(0, 0);
+ }
+
+ return GetVideoIntrinsicSize(nullptr);
+}
+
+bool nsVideoFrame::ShouldDisplayPoster()
+{
+ if (!HasVideoElement())
+ return false;
+
+ HTMLVideoElement* element = static_cast<HTMLVideoElement*>(GetContent());
+ if (element->GetPlayedOrSeeked() && HasVideoData())
+ return false;
+
+ nsCOMPtr<nsIImageLoadingContent> imgContent = do_QueryInterface(mPosterImage);
+ NS_ENSURE_TRUE(imgContent, false);
+
+ nsCOMPtr<imgIRequest> request;
+ nsresult res = imgContent->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
+ getter_AddRefs(request));
+ if (NS_FAILED(res) || !request) {
+ return false;
+ }
+
+ uint32_t status = 0;
+ res = request->GetImageStatus(&status);
+ if (NS_FAILED(res) || (status & imgIRequest::STATUS_ERROR))
+ return false;
+
+ return true;
+}
+
+nsSize
+nsVideoFrame::GetVideoIntrinsicSize(nsRenderingContext *aRenderingContext)
+{
+ // Defaulting size to 300x150 if no size given.
+ nsIntSize size(300, 150);
+
+ if (!HasVideoElement()) {
+ if (!mFrames.FirstChild()) {
+ return nsSize(0, 0);
+ }
+
+ // Ask the controls frame what its preferred height is
+ nsBoxLayoutState boxState(PresContext(), aRenderingContext, 0);
+ nscoord prefHeight = mFrames.LastChild()->GetXULPrefSize(boxState).height;
+ return nsSize(nsPresContext::CSSPixelsToAppUnits(size.width), prefHeight);
+ }
+
+ HTMLVideoElement* element = static_cast<HTMLVideoElement*>(GetContent());
+ if (NS_FAILED(element->GetVideoSize(&size)) && ShouldDisplayPoster()) {
+ // Use the poster image frame's size.
+ nsIFrame *child = mPosterImage->GetPrimaryFrame();
+ nsImageFrame* imageFrame = do_QueryFrame(child);
+ nsSize imgsize;
+ if (NS_SUCCEEDED(imageFrame->GetIntrinsicImageSize(imgsize))) {
+ return imgsize;
+ }
+ }
+
+ return nsSize(nsPresContext::CSSPixelsToAppUnits(size.width),
+ nsPresContext::CSSPixelsToAppUnits(size.height));
+}
+
+void
+nsVideoFrame::UpdatePosterSource(bool aNotify)
+{
+ NS_ASSERTION(HasVideoElement(), "Only call this on <video> elements.");
+ HTMLVideoElement* element = static_cast<HTMLVideoElement*>(GetContent());
+
+ if (element->HasAttr(kNameSpaceID_None, nsGkAtoms::poster) &&
+ !element->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::poster,
+ nsGkAtoms::_empty,
+ eIgnoreCase)) {
+ nsAutoString posterStr;
+ element->GetPoster(posterStr);
+ mPosterImage->SetAttr(kNameSpaceID_None,
+ nsGkAtoms::src,
+ posterStr,
+ aNotify);
+ } else {
+ mPosterImage->UnsetAttr(kNameSpaceID_None, nsGkAtoms::src, aNotify);
+ }
+}
+
+nsresult
+nsVideoFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType)
+{
+ if (aAttribute == nsGkAtoms::poster && HasVideoElement()) {
+ UpdatePosterSource(true);
+ }
+ return nsContainerFrame::AttributeChanged(aNameSpaceID,
+ aAttribute,
+ aModType);
+}
+
+void
+nsVideoFrame::OnVisibilityChange(Visibility aNewVisibility,
+ Maybe<OnNonvisible> aNonvisibleAction)
+{
+ if (HasVideoElement()) {
+ nsCOMPtr<nsIDOMHTMLMediaElement> mediaDomElement = do_QueryInterface(mContent);
+ mediaDomElement->OnVisibilityChange(aNewVisibility);
+ }
+
+ nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mPosterImage);
+ if (imageLoader) {
+ imageLoader->OnVisibilityChange(aNewVisibility,
+ aNonvisibleAction);
+ }
+
+ nsContainerFrame::OnVisibilityChange(aNewVisibility, aNonvisibleAction);
+}
+
+bool nsVideoFrame::HasVideoElement() {
+ nsCOMPtr<nsIDOMHTMLMediaElement> mediaDomElement = do_QueryInterface(mContent);
+ return mediaDomElement->IsVideo();
+}
+
+bool nsVideoFrame::HasVideoData()
+{
+ if (!HasVideoElement())
+ return false;
+ HTMLVideoElement* element = static_cast<HTMLVideoElement*>(GetContent());
+ nsIntSize size(0, 0);
+ element->GetVideoSize(&size);
+ return size != nsIntSize(0,0);
+}