From 807acf738f63d95fbecfb9129092aaa2379889ba Mon Sep 17 00:00:00 2001 From: wolfbeast Date: Tue, 20 Nov 2018 20:38:49 +0100 Subject: Bug 1462355 - Part 1a. Make imgFrame animation parameters threadsafe. We currently choose to set the animation parameters (blend method, blend rect, disposal method, timeout) in imgFrame::Finish instead of imgFrame::InitForDecoder. The decoders themselves already have access to the necessary information at the time InitForDecoder is called, so there is no reason to do this. Moving the configuration to initialization will allow us to relax the mutex protection on these parameters. This part simply reorganizes imgFrame, and subsequent parts will introduce the necessary changes to SurfacePipe and decoders. --- image/AnimationParams.h | 45 +++++++++++++++++++++++++++++++ image/imgFrame.cpp | 39 ++++++++++++++------------- image/imgFrame.h | 72 ++++++++++++++++++------------------------------- 3 files changed, 91 insertions(+), 65 deletions(-) create mode 100644 image/AnimationParams.h (limited to 'image') diff --git a/image/AnimationParams.h b/image/AnimationParams.h new file mode 100644 index 000000000..916ba7e40 --- /dev/null +++ b/image/AnimationParams.h @@ -0,0 +1,45 @@ +/* -*- 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/. */ + +#ifndef mozilla_image_AnimationParams_h +#define mozilla_image_AnimationParams_h + +#include +#include "mozilla/gfx/Rect.h" +#include "FrameTimeout.h" + +namespace mozilla { +namespace image { + +enum class BlendMethod : int8_t { + // All color components of the frame, including alpha, overwrite the current + // contents of the frame's output buffer region. + SOURCE, + + // The frame should be composited onto the output buffer based on its alpha, + // using a simple OVER operation. + OVER +}; + +enum class DisposalMethod : int8_t { + CLEAR_ALL = -1, // Clear the whole image, revealing what's underneath. + NOT_SPECIFIED, // Leave the frame and let the new frame draw on top. + KEEP, // Leave the frame and let the new frame draw on top. + CLEAR, // Clear the frame's area, revealing what's underneath. + RESTORE_PREVIOUS // Restore the previous (composited) frame. +}; + +struct AnimationParams +{ + gfx::IntRect mBlendRect; + FrameTimeout mTimeout; + uint32_t mFrameNum; + BlendMethod mBlendMethod; + DisposalMethod mDisposalMethod; +}; + +} // namespace image +} // namespace mozilla diff --git a/image/imgFrame.cpp b/image/imgFrame.cpp index 5da2ccec5..af84d8cbb 100644 --- a/image/imgFrame.cpp +++ b/image/imgFrame.cpp @@ -161,13 +161,13 @@ imgFrame::imgFrame() : mMonitor("imgFrame") , mDecoded(0, 0, 0, 0) , mLockCount(0) + , mAborted(false) + , mFinished(false) + , mOptimizable(false) , mTimeout(FrameTimeout::FromRawMilliseconds(100)) , mDisposalMethod(DisposalMethod::NOT_SPECIFIED) , mBlendMethod(BlendMethod::OVER) , mHasNoAlpha(false) - , mAborted(false) - , mFinished(false) - , mOptimizable(false) , mPalettedImageData(nullptr) , mPaletteDepth(0) , mNonPremult(false) @@ -192,7 +192,8 @@ imgFrame::InitForDecoder(const nsIntSize& aImageSize, const nsIntRect& aRect, SurfaceFormat aFormat, uint8_t aPaletteDepth /* = 0 */, - bool aNonPremult /* = false */) + bool aNonPremult /* = false */, + const Maybe& aAnimParams /* = Nothing() */) { // Assert for properties that should be verified by decoders, // warn for properties related to bad content. @@ -205,6 +206,15 @@ imgFrame::InitForDecoder(const nsIntSize& aImageSize, mImageSize = aImageSize; mFrameRect = aRect; + if (aAnimParams) { + mBlendRect = aAnimParams->mBlendRect; + mTimeout = aAnimParams->mTimeout; + mBlendMethod = aAnimParams->mBlendMethod; + mDisposalMethod = aAnimParams->mDisposalMethod; + } else { + mBlendRect = aRect; + } + // We only allow a non-trivial frame rect (i.e., a frame rect that doesn't // cover the entire image) for paletted animation frames. We never draw those // frames directly; we just use FrameAnimator to composite them and produce a @@ -242,13 +252,13 @@ imgFrame::InitForDecoder(const nsIntSize& aImageSize, } else { MOZ_ASSERT(!mImageSurface, "Called imgFrame::InitForDecoder() twice?"); - mVBuf = AllocateBufferForImage(mFrameRect.Size(), mFormat); - if (!mVBuf) { + mRawSurface = AllocateBufferForImage(mFrameRect.Size(), mFormat); + if (!mRawSurface) { mAborted = true; return NS_ERROR_OUT_OF_MEMORY; } - mImageSurface = CreateLockedSurface(mVBuf, mFrameRect.Size(), mFormat); + mImageSurface = CreateLockedSurface(mRawSurface, mFrameRect.Size(), mFormat); if (!mImageSurface) { NS_WARNING("Failed to create ImageSurface"); @@ -256,7 +266,7 @@ imgFrame::InitForDecoder(const nsIntSize& aImageSize, return NS_ERROR_OUT_OF_MEMORY; } - if (!ClearSurface(mVBuf, mFrameRect.Size(), mFormat)) { + if (!ClearSurface(mRawSurface, mFrameRect.Size(), mFormat)) { NS_WARNING("Could not clear allocated buffer"); mAborted = true; return NS_ERROR_OUT_OF_MEMORY; @@ -607,12 +617,7 @@ imgFrame::ImageUpdatedInternal(const nsIntRect& aUpdateRect) } void -imgFrame::Finish(Opacity aFrameOpacity /* = Opacity::SOME_TRANSPARENCY */, - DisposalMethod aDisposalMethod /* = DisposalMethod::KEEP */, - FrameTimeout aTimeout - /* = FrameTimeout::FromRawMilliseconds(0) */, - BlendMethod aBlendMethod /* = BlendMethod::OVER */, - const Maybe& aBlendRect /* = Nothing() */) +imgFrame::Finish(Opacity aFrameOpacity /* = Opacity::SOME_TRANSPARENCY */) { MonitorAutoLock lock(mMonitor); MOZ_ASSERT(mLockCount > 0, "Image data should be locked"); @@ -621,10 +626,6 @@ imgFrame::Finish(Opacity aFrameOpacity /* = Opacity::SOME_TRANSPARENCY */, mHasNoAlpha = true; } - mDisposalMethod = aDisposalMethod; - mTimeout = aTimeout; - mBlendMethod = aBlendMethod; - mBlendRect = aBlendRect; ImageUpdatedInternal(GetRect()); mFinished = true; @@ -844,7 +845,7 @@ imgFrame::GetAnimationData() const bool hasAlpha = mFormat == SurfaceFormat::B8G8R8A8; return AnimationData(data, PaletteDataLength(), mTimeout, GetRect(), - mBlendMethod, mBlendRect, mDisposalMethod, hasAlpha); + mBlendMethod, Some(mBlendRect), mDisposalMethod, hasAlpha); } void diff --git a/image/imgFrame.h b/image/imgFrame.h index e864aca7f..32aabacae 100644 --- a/image/imgFrame.h +++ b/image/imgFrame.h @@ -12,6 +12,7 @@ #include "mozilla/Monitor.h" #include "mozilla/Move.h" #include "mozilla/VolatileBuffer.h" +#include "AnimationParams.h" #include "gfxDrawable.h" #include "imgIContainer.h" #include "MainThreadUtils.h" @@ -23,24 +24,6 @@ class ImageRegion; class DrawableFrameRef; class RawAccessFrameRef; -enum class BlendMethod : int8_t { - // All color components of the frame, including alpha, overwrite the current - // contents of the frame's output buffer region. - SOURCE, - - // The frame should be composited onto the output buffer based on its alpha, - // using a simple OVER operation. - OVER -}; - -enum class DisposalMethod : int8_t { - CLEAR_ALL = -1, // Clear the whole image, revealing what's underneath. - NOT_SPECIFIED, // Leave the frame and let the new frame draw on top. - KEEP, // Leave the frame and let the new frame draw on top. - CLEAR, // Clear the frame's area, revealing what's underneath. - RESTORE_PREVIOUS // Restore the previous (composited) frame. -}; - enum class Opacity : uint8_t { FULLY_OPAQUE, SOME_TRANSPARENCY @@ -210,14 +193,19 @@ public: const nsIntRect& aRect, SurfaceFormat aFormat, uint8_t aPaletteDepth = 0, - bool aNonPremult = false); + bool aNonPremult = false, + const Maybe& aAnimParams = Nothing()); nsresult InitForDecoder(const nsIntSize& aSize, SurfaceFormat aFormat, uint8_t aPaletteDepth = 0) { - return InitForDecoder(aSize, nsIntRect(0, 0, aSize.width, aSize.height), - aFormat, aPaletteDepth); + nsIntRect frameRect(0, 0, aSize.width, aSize.height); + AnimationParams animParams { frameRect, FrameTimeout::Forever(), + /* aFrameNum */ 1, BlendMethod::OVER, + DisposalMethod::NOT_SPECIFIED }; + return InitForDecoder(aSize, frameRect, + aFormat, aPaletteDepth, false, Some(animParams)); } @@ -268,22 +256,8 @@ public: * RawAccessFrameRef pointing to an imgFrame. * * @param aFrameOpacity Whether this imgFrame is opaque. - * @param aDisposalMethod For animation frames, how this imgFrame is cleared - * from the compositing frame before the next frame is - * displayed. - * @param aTimeout For animation frames, the timeout before the next - * frame is displayed. - * @param aBlendMethod For animation frames, a blending method to be used - * when compositing this frame. - * @param aBlendRect For animation frames, if present, the subrect in - * which @aBlendMethod applies. Outside of this - * subrect, BlendMethod::OVER is always used. */ - void Finish(Opacity aFrameOpacity = Opacity::SOME_TRANSPARENCY, - DisposalMethod aDisposalMethod = DisposalMethod::KEEP, - FrameTimeout aTimeout = FrameTimeout::FromRawMilliseconds(0), - BlendMethod aBlendMethod = BlendMethod::OVER, - const Maybe& aBlendRect = Nothing()); + void Finish(Opacity aFrameOpacity = Opacity::SOME_TRANSPARENCY); /** * Mark this imgFrame as aborted. This informs the imgFrame that if it isn't @@ -322,9 +296,15 @@ public: */ uint32_t GetBytesPerPixel() const { return GetIsPaletted() ? 1 : 4; } - IntSize GetImageSize() const { return mImageSize; } - IntRect GetRect() const { return mFrameRect; } + const IntSize& GetImageSize() const { return mImageSize; } + const IntRect& GetRect() const { return mFrameRect; } IntSize GetSize() const { return mFrameRect.Size(); } + const IntRect& GetBlendRect() const { return mBlendRect; } + IntRect GetBoundedBlendRect() const { return mBlendRect.Intersect(mFrameRect); } + FrameTimeout GetTimeout() const { return mTimeout; } + BlendMethod GetBlendMethod() const { return mBlendMethod; } + DisposalMethod GetDisposalMethod() const { return mDisposalMethod; } + bool FormatHasAlpha() const { return mFormat == SurfaceFormat::B8G8R8A8; } void GetImageData(uint8_t** aData, uint32_t* length) const; uint8_t* GetImageData() const; @@ -406,14 +386,6 @@ private: // data //! Number of RawAccessFrameRefs currently alive for this imgFrame. int32_t mLockCount; - //! The timeout for this frame. - FrameTimeout mTimeout; - - DisposalMethod mDisposalMethod; - BlendMethod mBlendMethod; - Maybe mBlendRect; - SurfaceFormat mFormat; - bool mHasNoAlpha; bool mAborted; bool mFinished; @@ -426,6 +398,14 @@ private: // data IntSize mImageSize; IntRect mFrameRect; + IntRect mBlendRect; + + //! The timeout for this frame. + FrameTimeout mTimeout; + + DisposalMethod mDisposalMethod; + BlendMethod mBlendMethod; + SurfaceFormat mFormat; // The palette and image data for images that are paletted, since Cairo // doesn't support these images. -- cgit v1.2.3