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/*
* Copyright (C) 2017-2023 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. AND ITS CONTRIBUTORS ``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 ITS 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 "ExceptionOr.h"
#include "IDLTypes.h"
#include "ImageBitmapBacking.h"
#include "ScriptWrappable.h"
#include <atomic>
#include <wtf/RefCounted.h>
namespace JSC {
class ArrayBuffer;
}
using JSC::ArrayBuffer;
namespace WebCore {
class Blob;
class CanvasBase;
class CSSStyleImageValue;
class HTMLCanvasElement;
class HTMLImageElement;
class HTMLVideoElement;
class ImageBitmapImageObserver;
class ImageData;
class IntRect;
class IntSize;
#if ENABLE(OFFSCREEN_CANVAS)
class OffscreenCanvas;
#endif
class PendingImageBitmap;
class ScriptExecutionContext;
#if ENABLE(WEB_CODECS)
class WebCodecsVideoFrame;
#endif
struct ImageBitmapOptions;
template<typename IDLType> class DOMPromiseDeferred;
class ImageBitmap final : public ScriptWrappable, public RefCounted<ImageBitmap> {
WTF_MAKE_ISO_ALLOCATED(ImageBitmap);
public:
using Source = std::variant<
RefPtr<HTMLImageElement>,
#if ENABLE(VIDEO)
RefPtr<HTMLVideoElement>,
#endif
RefPtr<HTMLCanvasElement>,
RefPtr<ImageBitmap>,
#if ENABLE(OFFSCREEN_CANVAS)
RefPtr<OffscreenCanvas>,
#endif
RefPtr<CSSStyleImageValue>,
#if ENABLE(WEB_CODECS)
RefPtr<WebCodecsVideoFrame>,
#endif
RefPtr<Blob>,
RefPtr<ImageData>
>;
using Promise = DOMPromiseDeferred<IDLInterface<ImageBitmap>>;
using ImageBitmapCompletionHandler = CompletionHandler<void(ExceptionOr<Ref<ImageBitmap>>&&)>;
static void createCompletionHandler(ScriptExecutionContext&, Source&&, ImageBitmapOptions&&, ImageBitmapCompletionHandler&&);
static void createPromise(ScriptExecutionContext&, Source&&, ImageBitmapOptions&&, Promise&&);
static void createPromise(ScriptExecutionContext&, Source&&, ImageBitmapOptions&&, int sx, int sy, int sw, int sh, Promise&&);
static RefPtr<ImageBuffer> createImageBuffer(ScriptExecutionContext&, const FloatSize&, RenderingMode, DestinationColorSpace, float resolutionScale = 1);
static RefPtr<ImageBuffer> createImageBuffer(ScriptExecutionContext&, const FloatSize&, DestinationColorSpace, float resolutionScale = 1);
static Ref<ImageBitmap> create(ScriptExecutionContext&, const IntSize&, DestinationColorSpace);
static Ref<ImageBitmap> create(std::optional<ImageBitmapBacking>&&);
~ImageBitmap();
ImageBuffer* buffer() const { return m_backingStore ? m_backingStore->buffer() : nullptr; }
// This function has the implicit side-effect of detaching the backing store.
// It returns nullptr if the ImageBitmap's already detached.
RefPtr<ImageBuffer> takeImageBuffer();
OptionSet<SerializationState> serializationState() const { return m_backingStore ? m_backingStore->serializationState() : SerializationState(); }
unsigned width() const { return m_backingStore ? m_backingStore->width() : 0; }
unsigned height() const { return m_backingStore ? m_backingStore->height() : 0; }
bool originClean() const { return m_backingStore && m_backingStore->originClean(); }
bool premultiplyAlpha() const { return m_backingStore && m_backingStore->premultiplyAlpha(); }
bool forciblyPremultiplyAlpha() const { return m_backingStore && m_backingStore->forciblyPremultiplyAlpha(); }
std::optional<ImageBitmapBacking> takeImageBitmapBacking();
bool isDetached() const { return !m_backingStore; }
void close() { takeImageBitmapBacking(); }
static Vector<std::optional<ImageBitmapBacking>> detachBitmaps(Vector<RefPtr<ImageBitmap>>&&);
size_t memoryCost() const;
private:
friend class ImageBitmapImageObserver;
friend class PendingImageBitmap;
ImageBitmap(std::optional<ImageBitmapBacking>&&);
static Ref<ImageBitmap> createBlankImageBuffer(ScriptExecutionContext&, bool originClean);
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<HTMLImageElement>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
#if ENABLE(VIDEO)
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<HTMLVideoElement>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
#endif
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<ImageBitmap>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<HTMLCanvasElement>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
#if ENABLE(OFFSCREEN_CANVAS)
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<OffscreenCanvas>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
#endif
#if ENABLE(WEB_CODECS)
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<WebCodecsVideoFrame>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
#endif
static void createCompletionHandler(ScriptExecutionContext&, CanvasBase&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<Blob>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<ImageData>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
static void createCompletionHandler(ScriptExecutionContext&, RefPtr<CSSStyleImageValue>&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
static void createFromBuffer(ScriptExecutionContext&, Ref<ArrayBuffer>&&, String mimeType, long long expectedContentLength, const URL&, ImageBitmapOptions&&, std::optional<IntRect>, ImageBitmapCompletionHandler&&);
void updateMemoryCost();
std::optional<ImageBitmapBacking> m_backingStore;
std::atomic<size_t> m_memoryCost { 0 };
};
}
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