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74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
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/**
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* @file
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* @brief Implementation for MagickUtilities (conversions)
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* @author Jonathan Thomas <jonathan@openshot.org>
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* @author FeRD (Frank Dana) <ferdnyc@gmail.com>
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*/
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// Copyright (c) 2008-2021 OpenShot Studios, LLC
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//
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// SPDX-License-Identifier: LGPL-3.0-or-later
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#ifdef USE_IMAGEMAGICK
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#include "MagickUtilities.h"
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#include "QtUtilities.h"
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#include <QImage>
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// Get pointer to Magick::Image conversion of a QImage
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std::shared_ptr<Magick::Image>
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openshot::QImage2Magick(std::shared_ptr<QImage> image)
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{
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// Check for blank image
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if (!image || image->isNull())
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return nullptr;
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// Get the pixels from the frame image
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const QRgb *tmpBits = (const QRgb*)image->constBits();
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// Create new image object, and fill with pixel data
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auto magick_image = std::make_shared<Magick::Image>(
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image->width(), image->height(),
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"RGBA", Magick::CharPixel, tmpBits);
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// Give image a transparent background color
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magick_image->backgroundColor(Magick::Color("none"));
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magick_image->virtualPixelMethod(
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Magick::TransparentVirtualPixelMethod);
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MAGICK_IMAGE_ALPHA(magick_image, true);
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return magick_image;
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}
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// Get pointer to QImage conversion of a Magick::Image
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std::shared_ptr<QImage>
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openshot::Magick2QImage(std::shared_ptr<Magick::Image> image)
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{
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if (!image)
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return nullptr;
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const int BPP = 4;
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const std::size_t size = image->columns() * image->rows() * BPP;
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auto* qbuffer = new unsigned char[size]();
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MagickCore::ExceptionInfo exception;
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// TODO: Actually do something, if we get an exception here
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MagickCore::ExportImagePixels(
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image->constImage(), 0, 0,
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image->columns(), image->rows(),
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"RGBA", Magick::CharPixel,
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qbuffer, &exception);
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auto qimage = std::make_shared<QImage>(
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qbuffer, image->columns(), image->rows(),
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image->columns() * BPP,
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QImage::Format_RGBA8888_Premultiplied,
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(QImageCleanupFunction) &openshot::cleanUpBuffer,
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(void*) qbuffer);
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return qimage;
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}
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#endif // USE_IMAGEMAGICK
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