зеркало из https://github.com/mozilla/gecko-dev.git
413 строки
14 KiB
C++
413 строки
14 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_image_Image_h
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#define mozilla_image_Image_h
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/Tuple.h"
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#include "mozilla/TimeStamp.h"
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#include "gfx2DGlue.h"
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#include "imgIContainer.h"
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#include "ImageContainer.h"
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#include "LookupResult.h"
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#include "nsStringFwd.h"
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#include "ProgressTracker.h"
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#include "SurfaceCache.h"
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class nsIRequest;
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class nsIInputStream;
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namespace mozilla {
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namespace image {
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class Image;
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///////////////////////////////////////////////////////////////////////////////
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// Memory Reporting
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///////////////////////////////////////////////////////////////////////////////
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struct MemoryCounter
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{
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MemoryCounter()
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: mSource(0)
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, mDecodedHeap(0)
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, mDecodedNonHeap(0)
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, mExternalHandles(0)
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{ }
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void SetSource(size_t aCount) { mSource = aCount; }
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size_t Source() const { return mSource; }
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void SetDecodedHeap(size_t aCount) { mDecodedHeap = aCount; }
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size_t DecodedHeap() const { return mDecodedHeap; }
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void SetDecodedNonHeap(size_t aCount) { mDecodedNonHeap = aCount; }
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size_t DecodedNonHeap() const { return mDecodedNonHeap; }
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void SetExternalHandles(size_t aCount) { mExternalHandles = aCount; }
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size_t ExternalHandles() const { return mExternalHandles; }
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MemoryCounter& operator+=(const MemoryCounter& aOther)
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{
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mSource += aOther.mSource;
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mDecodedHeap += aOther.mDecodedHeap;
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mDecodedNonHeap += aOther.mDecodedNonHeap;
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mExternalHandles += aOther.mExternalHandles;
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return *this;
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}
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private:
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size_t mSource;
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size_t mDecodedHeap;
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size_t mDecodedNonHeap;
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size_t mExternalHandles;
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};
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enum class SurfaceMemoryCounterType
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{
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NORMAL,
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COMPOSITING,
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COMPOSITING_PREV
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};
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struct SurfaceMemoryCounter
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{
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SurfaceMemoryCounter(const SurfaceKey& aKey,
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bool aIsLocked,
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bool aCannotSubstitute,
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bool aIsFactor2,
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SurfaceMemoryCounterType aType =
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SurfaceMemoryCounterType::NORMAL)
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: mKey(aKey)
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, mType(aType)
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, mIsLocked(aIsLocked)
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, mCannotSubstitute(aCannotSubstitute)
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, mIsFactor2(aIsFactor2)
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{ }
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const SurfaceKey& Key() const { return mKey; }
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MemoryCounter& Values() { return mValues; }
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const MemoryCounter& Values() const { return mValues; }
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SurfaceMemoryCounterType Type() const { return mType; }
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bool IsLocked() const { return mIsLocked; }
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bool CannotSubstitute() const { return mCannotSubstitute; }
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bool IsFactor2() const { return mIsFactor2; }
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private:
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const SurfaceKey mKey;
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MemoryCounter mValues;
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const SurfaceMemoryCounterType mType;
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const bool mIsLocked;
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const bool mCannotSubstitute;
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const bool mIsFactor2;
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};
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struct ImageMemoryCounter
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{
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ImageMemoryCounter(Image* aImage, SizeOfState& aState, bool aIsUsed);
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nsCString& URI() { return mURI; }
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const nsCString& URI() const { return mURI; }
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const nsTArray<SurfaceMemoryCounter>& Surfaces() const { return mSurfaces; }
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const gfx::IntSize IntrinsicSize() const { return mIntrinsicSize; }
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const MemoryCounter& Values() const { return mValues; }
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uint16_t Type() const { return mType; }
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bool IsUsed() const { return mIsUsed; }
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bool IsNotable() const
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{
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const size_t NotableThreshold = 16 * 1024;
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size_t total = mValues.Source() + mValues.DecodedHeap()
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+ mValues.DecodedNonHeap();
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return total >= NotableThreshold;
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}
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private:
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nsCString mURI;
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nsTArray<SurfaceMemoryCounter> mSurfaces;
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gfx::IntSize mIntrinsicSize;
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MemoryCounter mValues;
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uint16_t mType;
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const bool mIsUsed;
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};
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///////////////////////////////////////////////////////////////////////////////
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// Image Base Types
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///////////////////////////////////////////////////////////////////////////////
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class Image : public imgIContainer
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{
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public:
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/**
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* Flags for Image initialization.
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*
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* Meanings:
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*
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* INIT_FLAG_NONE: Lack of flags
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*
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* INIT_FLAG_DISCARDABLE: The container should be discardable
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*
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* INIT_FLAG_DECODE_IMMEDIATELY: The container should decode as soon as
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* possible, regardless of what our heuristics say.
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*
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* INIT_FLAG_TRANSIENT: The container is likely to exist for only a short time
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* before being destroyed. (For example, containers for
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* multipart/x-mixed-replace image parts fall into this category.) If this
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* flag is set, INIT_FLAG_DISCARDABLE and INIT_FLAG_DECODE_ONLY_ON_DRAW must
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* not be set.
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*
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* INIT_FLAG_SYNC_LOAD: The container is being loaded synchronously, so
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* it should avoid relying on async workers to get the container ready.
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*/
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static const uint32_t INIT_FLAG_NONE = 0x0;
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static const uint32_t INIT_FLAG_DISCARDABLE = 0x1;
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static const uint32_t INIT_FLAG_DECODE_IMMEDIATELY = 0x2;
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static const uint32_t INIT_FLAG_TRANSIENT = 0x4;
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static const uint32_t INIT_FLAG_SYNC_LOAD = 0x8;
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virtual already_AddRefed<ProgressTracker> GetProgressTracker() = 0;
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virtual void SetProgressTracker(ProgressTracker* aProgressTracker) {}
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/**
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* The size, in bytes, occupied by the compressed source data of the image.
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* If MallocSizeOf does not work on this platform, uses a fallback approach to
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* ensure that something reasonable is always returned.
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*/
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virtual size_t
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SizeOfSourceWithComputedFallback(SizeOfState& aState) const = 0;
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/**
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* Collect an accounting of the memory occupied by the image's surfaces (which
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* together make up its decoded data). Each surface is recorded as a separate
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* SurfaceMemoryCounter, stored in @aCounters.
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*/
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virtual void CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
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MallocSizeOf aMallocSizeOf) const = 0;
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virtual void IncrementAnimationConsumers() = 0;
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virtual void DecrementAnimationConsumers() = 0;
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#ifdef DEBUG
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virtual uint32_t GetAnimationConsumers() = 0;
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#endif
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/**
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* Called from OnDataAvailable when the stream associated with the image has
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* received new image data. The arguments are the same as OnDataAvailable's,
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* but by separating this functionality into a different method we don't
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* interfere with subclasses which wish to implement nsIStreamListener.
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*
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* Images should not do anything that could send out notifications until they
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* have received their first OnImageDataAvailable notification; in
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* particular, this means that instantiating decoders should be deferred
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* until OnImageDataAvailable is called.
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*/
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virtual nsresult OnImageDataAvailable(nsIRequest* aRequest,
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nsISupports* aContext,
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nsIInputStream* aInStr,
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uint64_t aSourceOffset,
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uint32_t aCount) = 0;
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/**
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* Called from OnStopRequest when the image's underlying request completes.
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*
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* @param aRequest The completed request.
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* @param aContext Context from Necko's OnStopRequest.
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* @param aStatus A success or failure code.
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* @param aLastPart Whether this is the final part of the underlying request.
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*/
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virtual nsresult OnImageDataComplete(nsIRequest* aRequest,
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nsISupports* aContext,
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nsresult aStatus,
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bool aLastPart) = 0;
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/**
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* Called when the SurfaceCache discards a surface belonging to this image.
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*/
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virtual void OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey) = 0;
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virtual void SetInnerWindowID(uint64_t aInnerWindowId) = 0;
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virtual uint64_t InnerWindowID() const = 0;
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virtual bool HasError() = 0;
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virtual void SetHasError() = 0;
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virtual nsIURI* GetURI() const = 0;
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virtual void ReportUseCounters() { }
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};
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class ImageResource : public Image
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{
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public:
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already_AddRefed<ProgressTracker> GetProgressTracker() override
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{
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RefPtr<ProgressTracker> progressTracker = mProgressTracker;
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MOZ_ASSERT(progressTracker);
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return progressTracker.forget();
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}
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void SetProgressTracker(ProgressTracker* aProgressTracker) final
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{
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MOZ_ASSERT(aProgressTracker);
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MOZ_ASSERT(!mProgressTracker);
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mProgressTracker = aProgressTracker;
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}
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virtual void IncrementAnimationConsumers() override;
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virtual void DecrementAnimationConsumers() override;
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#ifdef DEBUG
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virtual uint32_t GetAnimationConsumers() override
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{
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return mAnimationConsumers;
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}
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#endif
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virtual void OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey) override { }
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virtual void SetInnerWindowID(uint64_t aInnerWindowId) override
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{
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mInnerWindowId = aInnerWindowId;
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}
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virtual uint64_t InnerWindowID() const override { return mInnerWindowId; }
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virtual bool HasError() override { return mError; }
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virtual void SetHasError() override { mError = true; }
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/*
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* Returns a non-AddRefed pointer to the URI associated with this image.
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* Illegal to use off-main-thread.
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*/
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nsIURI* GetURI() const override { return mURI; }
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protected:
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explicit ImageResource(nsIURI* aURI);
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~ImageResource();
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bool GetSpecTruncatedTo1k(nsCString& aSpec) const;
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// Shared functionality for implementors of imgIContainer. Every
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// implementation of attribute animationMode should forward here.
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nsresult GetAnimationModeInternal(uint16_t* aAnimationMode);
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nsresult SetAnimationModeInternal(uint16_t aAnimationMode);
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/**
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* Helper for RequestRefresh.
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*
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* If we've had a "recent" refresh (i.e. if this image is being used in
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* multiple documents & some other document *just* called RequestRefresh() on
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* this image with a timestamp close to aTime), this method returns true.
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*
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* Otherwise, this method updates mLastRefreshTime to aTime & returns false.
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*/
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bool HadRecentRefresh(const TimeStamp& aTime);
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/**
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* Decides whether animation should or should not be happening,
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* and makes sure the right thing is being done.
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*/
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virtual void EvaluateAnimation();
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/**
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* Extended by child classes, if they have additional
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* conditions for being able to animate.
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*/
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virtual bool ShouldAnimate() {
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return mAnimationConsumers > 0 && mAnimationMode != kDontAnimMode;
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}
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virtual nsresult StartAnimation() = 0;
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virtual nsresult StopAnimation() = 0;
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void SendOnUnlockedDraw(uint32_t aFlags);
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#ifdef DEBUG
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// Records the image drawing for startup performance testing.
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void NotifyDrawingObservers();
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#endif
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// Member data shared by all implementations of this abstract class
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RefPtr<ProgressTracker> mProgressTracker;
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nsCOMPtr<nsIURI> mURI;
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TimeStamp mLastRefreshTime;
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uint64_t mInnerWindowId;
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uint32_t mAnimationConsumers;
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uint16_t mAnimationMode; // Enum values in imgIContainer
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bool mInitialized:1; // Have we been initalized?
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bool mAnimating:1; // Are we currently animating?
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bool mError:1; // Error handling
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virtual Tuple<ImgDrawResult, gfx::IntSize, RefPtr<gfx::SourceSurface>>
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GetFrameInternal(const gfx::IntSize& aSize,
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const Maybe<SVGImageContext>& aSVGContext,
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uint32_t aWhichFrame,
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uint32_t aFlags)
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{
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return MakeTuple(ImgDrawResult::BAD_IMAGE, aSize,
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RefPtr<gfx::SourceSurface>());
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}
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/**
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* Calculate the estimated size to use for an image container with the given
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* parameters. It may not be the same as the given size, and it may not be
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* the same as the size of the surface in the image container, but it is the
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* best effort estimate.
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*/
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virtual Tuple<ImgDrawResult, gfx::IntSize>
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GetImageContainerSize(layers::LayerManager* aManager,
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const gfx::IntSize& aSize,
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uint32_t aFlags)
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{
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return MakeTuple(ImgDrawResult::NOT_SUPPORTED, gfx::IntSize(0, 0));
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}
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ImgDrawResult GetImageContainerImpl(layers::LayerManager* aManager,
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const gfx::IntSize& aSize,
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const Maybe<SVGImageContext>& aSVGContext,
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uint32_t aFlags,
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layers::ImageContainer** aContainer);
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void UpdateImageContainer();
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void ReleaseImageContainer();
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private:
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void SetCurrentImage(layers::ImageContainer* aContainer,
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gfx::SourceSurface* aSurface,
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bool aInTransaction);
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struct ImageContainerEntry {
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ImageContainerEntry(const gfx::IntSize& aSize,
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const Maybe<SVGImageContext>& aSVGContext,
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layers::ImageContainer* aContainer,
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uint32_t aFlags)
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: mSize(aSize)
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, mSVGContext(aSVGContext)
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, mContainer(aContainer)
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, mLastDrawResult(ImgDrawResult::NOT_READY)
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, mFlags(aFlags)
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{ }
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gfx::IntSize mSize;
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Maybe<SVGImageContext> mSVGContext;
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// A weak pointer to our ImageContainer, which stays alive only as long as
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// the layer system needs it.
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WeakPtr<layers::ImageContainer> mContainer;
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// If mContainer is non-null, this contains the ImgDrawResult we obtained
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// the last time we updated it.
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ImgDrawResult mLastDrawResult;
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// Cached flags to use for decoding. FLAG_ASYNC_NOTIFY should always be set
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// but FLAG_HIGH_QUALITY_SCALING may vary.
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uint32_t mFlags;
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};
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AutoTArray<ImageContainerEntry, 1> mImageContainers;
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layers::ImageContainer::ProducerID mImageProducerID;
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layers::ImageContainer::FrameID mLastFrameID;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_Image_h
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