michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "VideoFrameContainer.h"
michael@0: 
michael@0: #include "mozilla/dom/HTMLMediaElement.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "nsDisplayList.h"
michael@0: #include "nsSVGEffects.h"
michael@0: #include "ImageContainer.h"
michael@0: 
michael@0: using namespace mozilla::layers;
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: VideoFrameContainer::VideoFrameContainer(dom::HTMLMediaElement* aElement,
michael@0:                                          already_AddRefed<ImageContainer> aContainer)
michael@0:   : mElement(aElement),
michael@0:     mImageContainer(aContainer), mMutex("nsVideoFrameContainer"),
michael@0:     mIntrinsicSizeChanged(false), mImageSizeChanged(false)
michael@0: {
michael@0:   NS_ASSERTION(aElement, "aElement must not be null");
michael@0:   NS_ASSERTION(mImageContainer, "aContainer must not be null");
michael@0: }
michael@0: 
michael@0: VideoFrameContainer::~VideoFrameContainer()
michael@0: {}
michael@0: 
michael@0: void VideoFrameContainer::SetCurrentFrame(const gfxIntSize& aIntrinsicSize,
michael@0:                                           Image* aImage,
michael@0:                                           TimeStamp aTargetTime)
michael@0: {
michael@0:   MutexAutoLock lock(mMutex);
michael@0: 
michael@0:   if (aIntrinsicSize != mIntrinsicSize) {
michael@0:     mIntrinsicSize = aIntrinsicSize;
michael@0:     mIntrinsicSizeChanged = true;
michael@0:   }
michael@0: 
michael@0:   gfx::IntSize oldFrameSize = mImageContainer->GetCurrentSize();
michael@0:   TimeStamp lastPaintTime = mImageContainer->GetPaintTime();
michael@0:   if (!lastPaintTime.IsNull() && !mPaintTarget.IsNull()) {
michael@0:     mPaintDelay = lastPaintTime - mPaintTarget;
michael@0:   }
michael@0: 
michael@0:   // When using the OMX decoder, destruction of the current image can indirectly
michael@0:   //  block on main thread I/O. If we let this happen while holding onto
michael@0:   //  |mImageContainer|'s lock, then when the main thread then tries to
michael@0:   //  composite it can then block on |mImageContainer|'s lock, causing a
michael@0:   //  deadlock. We use this hack to defer the destruction of the current image
michael@0:   //  until it is safe.
michael@0:   nsRefPtr<Image> kungFuDeathGrip;
michael@0:   kungFuDeathGrip = mImageContainer->LockCurrentImage();
michael@0:   mImageContainer->UnlockCurrentImage();
michael@0: 
michael@0:   mImageContainer->SetCurrentImage(aImage);
michael@0:   gfx::IntSize newFrameSize = mImageContainer->GetCurrentSize();
michael@0:   if (oldFrameSize != newFrameSize) {
michael@0:     mImageSizeChanged = true;
michael@0:   }
michael@0: 
michael@0:   mPaintTarget = aTargetTime;
michael@0: }
michael@0: 
michael@0: void VideoFrameContainer::Reset()
michael@0: {
michael@0:   ClearCurrentFrame(true);
michael@0:   Invalidate();
michael@0:   mIntrinsicSize = gfxIntSize(-1, -1);
michael@0:   mPaintDelay = mozilla::TimeDuration();
michael@0:   mPaintTarget = mozilla::TimeStamp();
michael@0:   mImageContainer->ResetPaintCount();
michael@0: }
michael@0: 
michael@0: void VideoFrameContainer::ClearCurrentFrame(bool aResetSize)
michael@0: {
michael@0:   MutexAutoLock lock(mMutex);
michael@0: 
michael@0:   // See comment in SetCurrentFrame for the reasoning behind
michael@0:   // using a kungFuDeathGrip here.
michael@0:   nsRefPtr<Image> kungFuDeathGrip;
michael@0:   kungFuDeathGrip = mImageContainer->LockCurrentImage();
michael@0:   mImageContainer->UnlockCurrentImage();
michael@0: 
michael@0:   mImageContainer->ClearAllImages();
michael@0:   mImageSizeChanged = aResetSize;
michael@0: }
michael@0: 
michael@0: ImageContainer* VideoFrameContainer::GetImageContainer() {
michael@0:   return mImageContainer;
michael@0: }
michael@0: 
michael@0: 
michael@0: double VideoFrameContainer::GetFrameDelay()
michael@0: {
michael@0:   MutexAutoLock lock(mMutex);
michael@0:   return mPaintDelay.ToSeconds();
michael@0: }
michael@0: 
michael@0: void VideoFrameContainer::InvalidateWithFlags(uint32_t aFlags)
michael@0: {
michael@0:   NS_ASSERTION(NS_IsMainThread(), "Must call on main thread");
michael@0: 
michael@0:   if (!mElement) {
michael@0:     // Element has been destroyed
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   nsIFrame* frame = mElement->GetPrimaryFrame();
michael@0:   bool invalidateFrame = false;
michael@0: 
michael@0:   {
michael@0:     MutexAutoLock lock(mMutex);
michael@0: 
michael@0:     // Get mImageContainerSizeChanged while holding the lock.
michael@0:     invalidateFrame = mImageSizeChanged;
michael@0:     mImageSizeChanged = false;
michael@0: 
michael@0:     if (mIntrinsicSizeChanged) {
michael@0:       mElement->UpdateMediaSize(mIntrinsicSize);
michael@0:       mIntrinsicSizeChanged = false;
michael@0: 
michael@0:       if (frame) {
michael@0:         nsPresContext* presContext = frame->PresContext();
michael@0:         nsIPresShell *presShell = presContext->PresShell();
michael@0:         presShell->FrameNeedsReflow(frame,
michael@0:                                     nsIPresShell::eStyleChange,
michael@0:                                     NS_FRAME_IS_DIRTY);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   bool asyncInvalidate = mImageContainer &&
michael@0:                          mImageContainer->IsAsync() &&
michael@0:                          !(aFlags & INVALIDATE_FORCE);
michael@0: 
michael@0:   if (frame) {
michael@0:     if (invalidateFrame) {
michael@0:       frame->InvalidateFrame();
michael@0:     } else {
michael@0:       frame->InvalidateLayer(nsDisplayItem::TYPE_VIDEO, nullptr,
michael@0:                              asyncInvalidate ? nsIFrame::UPDATE_IS_ASYNC : 0);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   nsSVGEffects::InvalidateDirectRenderingObservers(mElement);
michael@0: }
michael@0: 
michael@0: }