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/*
* Copyright (C) 2022 Metrological Group B.V.
* Copyright (C) 2022 Igalia S.L.
*
* 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 "DMABufObject.h"
#include <span>
#include <wtf/Vector.h>
// This is a utilities header that provides helpers for integration of DMABuf operations with EGL.
// No EGL headers are included here to keep the helpers usable across different EGL implementations,
// so the expectation is that this header is included in the place-of-use implementation file after
// the appropriate EGL headers have already been included.
namespace WebCore::DMABufEGLUtilities {
enum class PlaneModifiersUsage : bool {
Use = true,
DoNotUse = false,
};
static inline Vector<EGLAttrib> constructEGLCreateImageAttributes(const DMABufObject& object, unsigned planeIndex, PlaneModifiersUsage planeModifiersUsage)
{
Vector<EGLAttrib> attributes;
attributes.reserveInitialCapacity(12 + 4 + 1);
attributes.uncheckedAppend(std::span<const EGLAttrib>({
EGL_WIDTH, EGLint(object.format.planeWidth(planeIndex, object.width)),
EGL_HEIGHT, EGLint(object.format.planeHeight(planeIndex, object.height)),
EGL_LINUX_DRM_FOURCC_EXT, EGLint(object.format.planes[planeIndex].fourcc),
EGL_DMA_BUF_PLANE0_FD_EXT, object.fd[planeIndex].value(),
EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(object.offset[planeIndex]),
EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(object.stride[planeIndex]),
}));
if (planeModifiersUsage == PlaneModifiersUsage::Use && object.modifierPresent[planeIndex]) {
attributes.uncheckedAppend(std::span<const EGLAttrib>({
EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, EGLint(object.modifierValue[planeIndex] >> 32),
EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT, EGLint(object.modifierValue[planeIndex] & 0xffffffff),
}));
}
attributes.uncheckedAppend(EGL_NONE);
return attributes;
}
} // namespace WebCore::DMABufEGLUtilities
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