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/*
* Copyright (C) 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 "DecodingOptions.h"
#include "ImageTypes.h"
#include <wtf/SynchronizedFixedQueue.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/WorkQueue.h>
namespace WebCore {
class BitmapImageSource;
class ImageFrameWorkQueue : public ThreadSafeRefCounted<ImageFrameWorkQueue> {
public:
struct Request {
unsigned index;
SubsamplingLevel subsamplingLevel;
ImageAnimatingState animatingState;
DecodingOptions options;
friend bool operator==(const Request&, const Request&) = default;
};
static Ref<ImageFrameWorkQueue> create(BitmapImageSource&);
void start();
void dispatch(const Request&);
void stop();
bool isIdle() const { return m_decodeQueue.isEmpty(); }
bool isPendingDecodingAtIndex(unsigned index, SubsamplingLevel, const DecodingOptions&) const;
void setMinimumDecodingDurationForTesting(Seconds duration) { m_minimumDecodingDurationForTesting = duration; }
void dump(TextStream&) const;
private:
ImageFrameWorkQueue(BitmapImageSource&);
Ref<BitmapImageSource> protectedSource() const { return m_source.get().releaseNonNull(); }
static const int BufferSize = 8;
using RequestQueue = SynchronizedFixedQueue<Request, BufferSize>;
using DecodeQueue = Deque<Request, BufferSize>;
RequestQueue& requestQueue();
DecodeQueue& decodeQueue() { return m_decodeQueue; }
Seconds minimumDecodingDurationForTesting() const { return m_minimumDecodingDurationForTesting; }
ThreadSafeWeakPtr<BitmapImageSource> m_source;
RefPtr<RequestQueue> m_requestQueue;
DecodeQueue m_decodeQueue;
RefPtr<WorkQueue> m_workQueue;
Seconds m_minimumDecodingDurationForTesting;
};
} // namespace WebCore
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