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/**
* @file
* @brief Unit tests for openshot::ImageWriter
* @author Jonathan Thomas <jonathan@openshot.org>
*
* @ref License
*/
/* LICENSE
*
* Copyright (c) 2008-2019 OpenShot Studios, LLC
* <http://www.openshotstudios.com/>. This file is part of
* OpenShot Library (libopenshot), an open-source project dedicated to
* delivering high quality video editing and animation solutions to the
* world. For more information visit <http://www.openshot.org/>.
*
* OpenShot Library (libopenshot) is free software: you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* OpenShot Library (libopenshot) is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_IMAGEMAGICK
#include <sstream>
#include <memory>
#include <catch2/catch.hpp>
#include "ImageWriter.h"
#include "Exceptions.h"
#include "ImageReader.h"
#include "FFmpegReader.h"
#include "Frame.h"
using namespace openshot;
TEST_CASE( "Gif", "[libopenshot][imagewriter]" )
{
// Reader ---------------
// Bad path
FFmpegReader bad_r("/tmp/bleeblorp.xls", false);
CHECK_THROWS_AS(bad_r.Open(), InvalidFile);
// Good path
std::stringstream path;
path << TEST_MEDIA_PATH << "sintel_trailer-720p.mp4";
FFmpegReader r(path.str());
// Read-before-open error
CHECK_THROWS_AS(r.GetFrame(1), ReaderClosed);
r.Open();
/* WRITER ---------------- */
ImageWriter w("output1.gif");
CHECK_FALSE(w.IsOpen());
// Check for exception on write-before-open
CHECK_THROWS_AS(w.WriteFrame(&r, 500, 504), WriterClosed);
// Set the image output settings (format, fps, width, height, quality, loops, combine)
w.SetVideoOptions("GIF", r.info.fps, r.info.width, r.info.height, 70, 1, true);
// Open writer
w.Open();
// Write some frames (start on frame 500 and go to frame 510)
w.WriteFrame(&r, 500, 504);
// Close writer & reader
w.Close();
r.Close();
// Open up the 5th frame from the newly created GIF
ImageReader r1("output1.gif[4]");
// Basic Reader state queries
CHECK(r1.Name() == "ImageReader");
CacheBase* c = r1.GetCache();
CHECK(c == nullptr);
CHECK_FALSE(r1.IsOpen());
r1.Open();
CHECK(r1.IsOpen() == true);
// Verify various settings
CHECK(r1.info.width == r.info.width);
CHECK(r1.info.height == r.info.height);
// Get a specific frame
std::shared_ptr<Frame> f = r1.GetFrame(8);
// Get the image data for row 500
const unsigned char* pixels = f->GetPixels(500);
int pixel_index = 230 * 4; // pixel 230 (4 bytes per pixel)
// Check image properties
CHECK((int)pixels[pixel_index] == Approx(20).margin(5));
CHECK((int)pixels[pixel_index + 1] == Approx(18).margin(5));
CHECK((int)pixels[pixel_index + 2] == Approx(11).margin(5));
CHECK((int)pixels[pixel_index + 3] == Approx(255).margin(5));
}
#endif // USE_IMAGEMAGICK
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