image/DynamicImage.cpp
author Timothy Nikkel <tnikkel@gmail.com>
Thu, 16 Mar 2017 03:06:06 -0500
changeset 347865 d4cafcc44babd82e009801f6d453b6002fb280d7
parent 347677 0394f4a6e9e9436e70409bc9f0eff8378f945f27
child 348798 0b797601dc36ce8b3758aa9b39eaa2f20356d239
permissions -rw-r--r--
Bug 1343341. Only set the animation state as discarded if we discarded the animated frames (and not a static frame from a first-frame-only decode). r=aosmond The SurfaceCache can hold the first frame of a "static" decode as well as the animated frames in two seperate entries. We only care about what happens to the animated frames, so ignore OnSurfaceDiscarded for anything else. To accomplish this we must pass the SurfaceKey to OnSurfaceDiscarded.

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "DynamicImage.h"
#include "gfxPlatform.h"
#include "gfxUtils.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/RefPtr.h"
#include "ImageRegion.h"
#include "Orientation.h"
#include "SVGImageContext.h"

#include "mozilla/MemoryReporting.h"

using namespace mozilla;
using namespace mozilla::gfx;
using mozilla::layers::LayerManager;
using mozilla::layers::ImageContainer;

namespace mozilla {
namespace image {

// Inherited methods from Image.

already_AddRefed<ProgressTracker>
DynamicImage::GetProgressTracker()
{
  return nullptr;
}

size_t
DynamicImage::SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf) const
{
  return 0;
}

void
DynamicImage::CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
                                    MallocSizeOf aMallocSizeOf) const
{
  // We can't report anything useful because gfxDrawable doesn't expose this
  // information.
}

void
DynamicImage::IncrementAnimationConsumers()
{ }

void
DynamicImage::DecrementAnimationConsumers()
{ }

#ifdef DEBUG
uint32_t
DynamicImage::GetAnimationConsumers()
{
  return 0;
}
#endif

nsresult
DynamicImage::OnImageDataAvailable(nsIRequest* aRequest,
                                   nsISupports* aContext,
                                   nsIInputStream* aInStr,
                                   uint64_t aSourceOffset,
                                   uint32_t aCount)
{
  return NS_OK;
}

nsresult
DynamicImage::OnImageDataComplete(nsIRequest* aRequest,
                                  nsISupports* aContext,
                                  nsresult aStatus,
                                  bool aLastPart)
{
  return NS_OK;
}

void
DynamicImage::OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey)
{ }

void
DynamicImage::SetInnerWindowID(uint64_t aInnerWindowId)
{ }

uint64_t
DynamicImage::InnerWindowID() const
{
  return 0;
}

bool
DynamicImage::HasError()
{
  return !mDrawable;
}

void
DynamicImage::SetHasError()
{ }

ImageURL*
DynamicImage::GetURI()
{
  return nullptr;
}

// Methods inherited from XPCOM interfaces.

NS_IMPL_ISUPPORTS(DynamicImage, imgIContainer)

NS_IMETHODIMP
DynamicImage::GetWidth(int32_t* aWidth)
{
  *aWidth = mDrawable->Size().width;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetHeight(int32_t* aHeight)
{
  *aHeight = mDrawable->Size().height;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetIntrinsicSize(nsSize* aSize)
{
  IntSize intSize(mDrawable->Size());
  *aSize = nsSize(intSize.width, intSize.height);
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetIntrinsicRatio(nsSize* aSize)
{
  IntSize intSize(mDrawable->Size());
  *aSize = nsSize(intSize.width, intSize.height);
  return NS_OK;
}

NS_IMETHODIMP_(Orientation)
DynamicImage::GetOrientation()
{
  return Orientation();
}

NS_IMETHODIMP
DynamicImage::GetType(uint16_t* aType)
{
  *aType = imgIContainer::TYPE_RASTER;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetAnimated(bool* aAnimated)
{
  *aAnimated = false;
  return NS_OK;
}

NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
DynamicImage::GetFrame(uint32_t aWhichFrame,
                       uint32_t aFlags)
{
  IntSize size(mDrawable->Size());
  return GetFrameAtSize(IntSize(size.width, size.height),
                        aWhichFrame,
                        aFlags);
}

NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
DynamicImage::GetFrameAtSize(const IntSize& aSize,
                             uint32_t aWhichFrame,
                             uint32_t aFlags)
{
  RefPtr<DrawTarget> dt = gfxPlatform::GetPlatform()->
    CreateOffscreenContentDrawTarget(aSize, SurfaceFormat::B8G8R8A8);
  if (!dt || !dt->IsValid()) {
    gfxWarning() <<
      "DynamicImage::GetFrame failed in CreateOffscreenContentDrawTarget";
    return nullptr;
  }
  RefPtr<gfxContext> context = gfxContext::CreateOrNull(dt);
  MOZ_ASSERT(context); // already checked the draw target above

  auto result = Draw(context, aSize, ImageRegion::Create(aSize),
                     aWhichFrame, SamplingFilter::POINT, Nothing(), aFlags,
                     1.0);

  return result == DrawResult::SUCCESS ? dt->Snapshot() : nullptr;
}

NS_IMETHODIMP_(bool)
DynamicImage::WillDrawOpaqueNow()
{
  return false;
}

NS_IMETHODIMP_(bool)
DynamicImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
{
  return false;
}

NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
DynamicImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
{
  return nullptr;
}

NS_IMETHODIMP_(DrawResult)
DynamicImage::Draw(gfxContext* aContext,
                   const nsIntSize& aSize,
                   const ImageRegion& aRegion,
                   uint32_t aWhichFrame,
                   SamplingFilter aSamplingFilter,
                   const Maybe<SVGImageContext>& aSVGContext,
                   uint32_t aFlags,
                   float aOpacity)
{
  MOZ_ASSERT(!aSize.IsEmpty(), "Unexpected empty size");

  IntSize drawableSize(mDrawable->Size());

  if (aSize == drawableSize) {
    gfxUtils::DrawPixelSnapped(aContext, mDrawable, drawableSize, aRegion,
                               SurfaceFormat::B8G8R8A8, aSamplingFilter,
                               aOpacity);
    return DrawResult::SUCCESS;
  }

  gfxSize scale(double(aSize.width) / drawableSize.width,
                double(aSize.height) / drawableSize.height);

  ImageRegion region(aRegion);
  region.Scale(1.0 / scale.width, 1.0 / scale.height);

  gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
  aContext->Multiply(gfxMatrix::Scaling(scale.width, scale.height));

  gfxUtils::DrawPixelSnapped(aContext, mDrawable, drawableSize, region,
                             SurfaceFormat::B8G8R8A8, aSamplingFilter,
                             aOpacity);
  return DrawResult::SUCCESS;
}

NS_IMETHODIMP
DynamicImage::StartDecoding(uint32_t aFlags)
{
  return NS_OK;
}

bool
DynamicImage::StartDecodingWithResult(uint32_t aFlags)
{
  return true;
}

NS_IMETHODIMP
DynamicImage::RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags)
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::LockImage()
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::UnlockImage()
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::RequestDiscard()
{
  return NS_OK;
}

NS_IMETHODIMP_(void)
DynamicImage::RequestRefresh(const mozilla::TimeStamp& aTime)
{ }

NS_IMETHODIMP
DynamicImage::GetAnimationMode(uint16_t* aAnimationMode)
{
  *aAnimationMode = kNormalAnimMode;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::SetAnimationMode(uint16_t aAnimationMode)
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::ResetAnimation()
{
  return NS_OK;
}

NS_IMETHODIMP_(float)
DynamicImage::GetFrameIndex(uint32_t aWhichFrame)
{
  return 0;
}

NS_IMETHODIMP_(int32_t)
DynamicImage::GetFirstFrameDelay()
{
  return 0;
}

NS_IMETHODIMP_(void)
DynamicImage::SetAnimationStartTime(const mozilla::TimeStamp& aTime)
{ }

nsIntSize
DynamicImage::OptimalImageSizeForDest(const gfxSize& aDest,
                                      uint32_t aWhichFrame,
                                      SamplingFilter aSamplingFilter,
                                      uint32_t aFlags)
{
  IntSize size(mDrawable->Size());
  return nsIntSize(size.width, size.height);
}

NS_IMETHODIMP_(nsIntRect)
DynamicImage::GetImageSpaceInvalidationRect(const nsIntRect& aRect)
{
  return aRect;
}

already_AddRefed<imgIContainer>
DynamicImage::Unwrap()
{
  nsCOMPtr<imgIContainer> self(this);
  return self.forget();
}

void
DynamicImage::PropagateUseCounters(nsIDocument*)
{
  // No use counters.
}

} // namespace image
} // namespace mozilla