/*
 * Copyright (C) 2019 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 <WebCore/AffineTransform.h>
#include <WebCore/FloatSize.h>
#include <wtf/TZoneMalloc.h>

typedef struct OpaqueVTImageRotationSession* VTImageRotationSessionRef;
typedef struct CF_BRIDGED_TYPE(id) __CVBuffer *CVPixelBufferRef;
typedef struct __CVPixelBufferPool* CVPixelBufferPoolRef;

namespace WebCore {

class VideoFrame;

class ImageRotationSessionVT final {
    WTF_MAKE_TZONE_ALLOCATED_EXPORT(ImageRotationSessionVT, WEBCORE_EXPORT);
public:
    struct RotationProperties {
        bool flipX { false };
        bool flipY { false };
        unsigned angle { 0 };

        friend bool operator==(const RotationProperties&, const RotationProperties&) = default;
        bool isIdentity() const { return !flipX && !flipY && !angle; }
    };

    enum class IsCGImageCompatible : bool { No, Yes };
    enum class ShouldUseIOSurface : bool { No, Yes };

    ImageRotationSessionVT(AffineTransform&&, FloatSize, IsCGImageCompatible, ShouldUseIOSurface = ShouldUseIOSurface::Yes);
    ImageRotationSessionVT(const RotationProperties&, FloatSize, IsCGImageCompatible, ShouldUseIOSurface = ShouldUseIOSurface::Yes);
    WEBCORE_EXPORT explicit ImageRotationSessionVT(ShouldUseIOSurface = ShouldUseIOSurface::Yes);

    const std::optional<AffineTransform>& transform() const { return m_transform; }
    const RotationProperties& rotationProperties() const { return m_rotationProperties; }
    const FloatSize& size() { return m_size; }
    const FloatSize& rotatedSize() { return m_rotatedSize; }

    RetainPtr<CVPixelBufferRef> rotate(CVPixelBufferRef);
    RefPtr<VideoFrame> applyRotation(VideoFrame&, IsCGImageCompatible = IsCGImageCompatible::No);
    WEBCORE_EXPORT RetainPtr<CVPixelBufferRef> rotate(VideoFrame&, const RotationProperties&, IsCGImageCompatible);

private:
    void initialize(const RotationProperties&, FloatSize, IsCGImageCompatible);

    RotationProperties m_rotationProperties;
    FloatSize m_size;
    std::optional<AffineTransform> m_transform;
    OSType m_pixelFormat;
    IsCGImageCompatible m_isCGImageCompatible;
    FloatSize m_rotatedSize;
    RetainPtr<VTImageRotationSessionRef> m_rotationSession;
    RetainPtr<CVPixelBufferPoolRef> m_rotationPool;
    bool m_shouldUseIOSurface { true };
};

}
