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/*
* 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 "AffineTransform.h"
#include "FloatSize.h"
typedef struct OpaqueVTImageRotationSession* VTImageRotationSessionRef;
typedef struct __CVBuffer *CVPixelBufferRef;
typedef struct __CVPixelBufferPool* CVPixelBufferPoolRef;
namespace WebCore {
class VideoFrame;
class ImageRotationSessionVT final {
WTF_MAKE_FAST_ALLOCATED;
public:
struct RotationProperties {
bool flipX { false };
bool flipY { false };
unsigned angle { 0 };
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);
ImageRotationSessionVT() = default;
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);
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 };
};
inline bool operator==(const ImageRotationSessionVT::RotationProperties& rotation1, const ImageRotationSessionVT::RotationProperties& rotation2)
{
return rotation1.flipX == rotation2.flipX && rotation1.flipY == rotation2.flipY && rotation1.angle == rotation2.angle;
}
}
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