2013-09-29 00:24:58 -05:00
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/**
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* @file
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* @brief Source file for ChromaKey class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @section LICENSE
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*
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* Copyright (c) 2008-2013 OpenShot Studios, LLC
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* (http://www.openshotstudios.com). This file is part of
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* OpenShot Library (http://www.openshot.org), an open-source project
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* dedicated to delivering high quality video editing and animation solutions
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* to the world.
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*
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* OpenShot Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenShot Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../include/effects/ChromaKey.h"
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using namespace openshot;
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// Default constructor, which takes an openshot::Color object and a 'fuzz' factor, which
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// is used to determine how similar colored pixels are matched. The higher the fuzz, the
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// more colors are matched.
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ChromaKey::ChromaKey(Color color, Keyframe fuzz) : color(color), fuzz(fuzz)
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{
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/// Initialize the values of the EffectInfo struct.
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InitEffectInfo();
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/// Set the effect info
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info.name = "Chroma Key (Greenscreen)";
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info.description = "Replaces the color (or chroma) of the frame with transparency (i.e. keys out the color).";
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info.has_audio = false;
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info.has_video = true;
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}
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// This method is required for all derived classes of EffectBase, and returns a
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// modified openshot::Frame object
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tr1::shared_ptr<Frame> ChromaKey::GetFrame(tr1::shared_ptr<Frame> frame, int frame_number)
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{
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// Make this range of colors transparent
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frame->GetImage()->colorFuzz(fuzz.GetValue(frame_number) * 65535 / 100.0);
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frame->GetImage()->transparent(Magick::Color(color.red.GetInt(frame_number), color.green.GetInt(frame_number), color.blue.GetInt(frame_number)));
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// return the modified frame
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return frame;
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}
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2013-12-06 00:40:26 -06:00
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// Generate Json::JsonValue for this object
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Json::Value ChromaKey::JsonValue() {
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// Create root json object
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Json::Value root = EffectBase::JsonValue(); // get parent properties
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root["color"] = color.JsonValue();
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root["fuzz"] = fuzz.JsonValue();
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// return JsonValue
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return root;
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}
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// Load Json::JsonValue into this object
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void ChromaKey::Json(Json::Value root) {
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// Set parent data
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EffectBase::Json(root);
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// Set data from Json (if key is found)
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if (root["color"] != Json::nullValue)
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color.Json(root["color"]);
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if (root["fuzz"] != Json::nullValue)
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fuzz.Json(root["fuzz"]);
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}
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