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/**
* @file
* @brief Unit tests for openshot::ChromaKey effect
* @author Jonathan Thomas <jonathan@openshot.org>
* @author FeRD (Frank Dana) <ferdnyc@gmail.com>
*
* @ref License
*/
// Copyright (c) 2008-2021 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
#include <sstream>
#include <memory>
#include "Frame.h"
#include "effects/ChromaKey.h"
#include <QColor>
#include <QImage>
// Stream output formatter for QColor, needed so Catch2 can display
// values when CHECK(qcolor1 == qcolor2) comparisons fail
std::ostream& operator << ( std::ostream& os, QColor const& value ) {
os << "QColor(" << value.red() << ", " << value.green() << ", "
<< value.blue() << ", " << value.alpha() << ")";
return os;
}
#include "openshot_catch.h"
using namespace openshot;
TEST_CASE( "basic keying", "[libopenshot][effect][chromakey]" )
{
// solid green frame
auto f = std::make_shared<openshot::Frame>(1, 1280, 720, "#00ff00");
// Create a ChromaKey effect to key on solid green ± 5 values
openshot::Color key(0, 255, 0, 255);
openshot::Keyframe fuzz(5);
openshot::ChromaKey e(key, fuzz);
auto f_out = e.GetFrame(f, 1);
std::shared_ptr<QImage> i = f_out->GetImage();
// Check color fill (should be transparent)
QColor pix = i->pixelColor(10, 10);
QColor trans{Qt::transparent};
CHECK(pix == trans);
}
TEST_CASE( "threshold", "[libopenshot][effect][chromakey]" )
{
auto frame = std::make_shared<openshot::Frame>(1, 1280, 720, "#00cc00");
// Create a ChromaKey effect to key on solid green ± 5 values
openshot::Color key(0, 255, 0, 255);
openshot::Keyframe fuzz(5);
openshot::ChromaKey e(key, fuzz);
auto frame_out = e.GetFrame(frame, 1);
std::shared_ptr<QImage> i = frame_out->GetImage();
// Output should be the same, no ChromaKey
QColor pix_e = i->pixelColor(10, 10);
QColor expected(0, 204, 0, 255);
CHECK(pix_e == expected);
}
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