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/*
* Copyright (C) 2016-2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ImageFrame.h"
#include "ImageOrientation.h"
#include "ImageTypes.h"
#include <wtf/ThreadSafeWeakPtr.h>
namespace WebCore {
class FragmentedSharedBuffer;
class ImageSource : public ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr<ImageSource> {
public:
virtual ~ImageSource() = default;
// Encoded and decoded data
virtual EncodedDataStatus dataChanged(FragmentedSharedBuffer*, bool) { RELEASE_ASSERT_NOT_REACHED(); return EncodedDataStatus::Unknown; }
virtual void destroyDecodedData(bool) { RELEASE_ASSERT_NOT_REACHED(); }
// Animation
virtual void startAnimation() { }
virtual void stopAnimation() { }
virtual void resetAnimation() { }
virtual bool isAnimated() const { return false; }
virtual bool isAnimating() const { return false; }
virtual bool hasEverAnimated() const { return false; }
// Decoding
virtual bool isLargeForDecoding() const { return false; }
virtual void stopDecodingWorkQueue() { RELEASE_ASSERT_NOT_REACHED(); }
virtual void decode(Function<void(DecodingStatus)>&&) { RELEASE_ASSERT_NOT_REACHED(); }
// ImageFrame
virtual unsigned currentFrameIndex() const { return primaryFrameIndex(); }
virtual const ImageFrame& primaryImageFrame(const std::optional<SubsamplingLevel>& = std::nullopt) = 0;
virtual const ImageFrame& currentImageFrame(const std::optional<SubsamplingLevel>& subsamplingLevel = std::nullopt) { return primaryImageFrame(subsamplingLevel); }
// NativeImage
virtual RefPtr<NativeImage> primaryNativeImage() = 0;
virtual RefPtr<NativeImage> currentNativeImage() { return primaryNativeImage(); }
virtual RefPtr<NativeImage> currentPreTransformedNativeImage(ImageOrientation) { return currentNativeImage(); }
virtual RefPtr<NativeImage> nativeImageAtIndex(unsigned) { return primaryNativeImage(); }
virtual Expected<Ref<NativeImage>, DecodingStatus> primaryNativeImageForDrawing(SubsamplingLevel, const DecodingOptions&);
virtual Expected<Ref<NativeImage>, DecodingStatus> currentNativeImageForDrawing(SubsamplingLevel, const DecodingOptions&);
// Image Metadata
virtual IntSize size(ImageOrientation = ImageOrientation::Orientation::FromImage) const = 0;
virtual IntSize sourceSize(ImageOrientation orientation = ImageOrientation::Orientation::FromImage) const { return size(orientation); }
virtual bool hasDensityCorrectedSize() const { return false; }
virtual ImageOrientation orientation() const { return ImageOrientation::Orientation::None; }
virtual unsigned primaryFrameIndex() const { return 0; }
virtual unsigned frameCount() const { return 1; }
virtual DestinationColorSpace colorSpace() const = 0;
virtual std::optional<Color> singlePixelSolidColor() const = 0;
virtual Headroom headroom() const = 0;
bool hasSolidColor() const;
virtual String uti() const { return String(); }
virtual String filenameExtension() const { return String(); }
virtual String accessibilityDescription() const { return String(); }
virtual std::optional<IntPoint> hotSpot() const { return { }; }
virtual SubsamplingLevel subsamplingLevelForScaleFactor(GraphicsContext&, const FloatSize&, AllowImageSubsampling) { return SubsamplingLevel::Default; }
#if ENABLE(QUICKLOOK_FULLSCREEN)
virtual bool shouldUseQuickLookForFullscreen() const { return false; }
#endif
#if ENABLE(SPATIAL_IMAGE_DETECTION)
virtual bool isSpatial() const { return false; }
#endif
// ImageFrame Metadata
virtual Seconds frameDurationAtIndex(unsigned) const { RELEASE_ASSERT_NOT_REACHED(); return 0_s; }
virtual ImageOrientation frameOrientationAtIndex(unsigned) const { RELEASE_ASSERT_NOT_REACHED(); return ImageOrientation::Orientation::None; }
virtual DecodingStatus frameDecodingStatusAtIndex(unsigned) const { RELEASE_ASSERT_NOT_REACHED(); return DecodingStatus::Invalid; }
// Testing support
virtual unsigned decodeCountForTesting() const { return 0; }
virtual unsigned blankDrawCountForTesting() const { return 0; }
virtual void setMinimumDecodingDurationForTesting(Seconds) { RELEASE_ASSERT_NOT_REACHED(); }
virtual void setClearDecoderAfterAsyncFrameRequestForTesting(bool) { RELEASE_ASSERT_NOT_REACHED(); }
virtual void setAsyncDecodingEnabledForTesting(bool) { RELEASE_ASSERT_NOT_REACHED(); }
virtual bool isAsyncDecodingEnabledForTesting() const { return false; }
virtual void setHeadroomForTesting(Headroom) { RELEASE_ASSERT_NOT_REACHED(); }
virtual std::optional<Headroom> headroomForTesting() const { return std::nullopt; }
virtual void dump(WTF::TextStream&) const { }
};
} // namespace WebCore
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