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130 lines
4.1 KiB
C++
130 lines
4.1 KiB
C++
/**
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* @file
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* @brief Source file for Negate 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) 2008-2014 OpenShot Studios, LLC
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* <http://www.openshotstudios.com/>. This file is part of
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* OpenShot Library (libopenshot), an open-source project dedicated to
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* delivering high quality video editing and animation solutions to the
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* world. For more information visit <http://www.openshot.org/>.
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*
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* OpenShot Library (libopenshot) is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* OpenShot Library (libopenshot) is distributed in the hope that it will be
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* useful, 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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/Negate.h"
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using namespace openshot;
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// Default constructor
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Negate::Negate()
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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 = "Negative";
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info.description = "Negates the colors, producing a negative of the image.";
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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> Negate::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()->negate();
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// return the modified frame
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return frame;
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}
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// Generate JSON string of this object
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string Negate::Json() {
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// Return formatted string
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return JsonValue().toStyledString();
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}
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// Generate Json::JsonValue for this object
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Json::Value Negate::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["type"] = "Negate";
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// return JsonValue
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return root;
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}
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// Load JSON string into this object
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void Negate::SetJson(string value) throw(InvalidJSON) {
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// Parse JSON string into JSON objects
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Json::Value root;
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Json::Reader reader;
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bool success = reader.parse( value, root );
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if (!success)
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// Raise exception
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throw InvalidJSON("JSON could not be parsed (or is invalid)", "");
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try
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{
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// Set all values that match
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SetJsonValue(root);
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}
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catch (exception e)
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{
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// Error parsing JSON (or missing keys)
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throw InvalidJSON("JSON is invalid (missing keys or invalid data types)", "");
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}
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}
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// Load Json::JsonValue into this object
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void Negate::SetJsonValue(Json::Value root) {
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// Set parent data
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EffectBase::SetJsonValue(root);
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}
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// Get all properties for a specific frame
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string Negate::PropertiesJSON(int requested_frame) {
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// Requested Point
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Point requested_point(requested_frame, requested_frame);
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// Generate JSON properties list
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Json::Value root;
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root["id"] = add_property_json("ID", 0.0, "string", Id(), false, 0, -1, -1, CONSTANT, -1, true);
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root["position"] = add_property_json("Position", Position(), "float", "", false, 0, 0, 1000 * 60 * 30, CONSTANT, -1, false);
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root["layer"] = add_property_json("Layer", Layer(), "int", "", false, 0, 0, 1000, CONSTANT, -1, false);
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root["start"] = add_property_json("Start", Start(), "float", "", false, 0, 0, 1000 * 60 * 30, CONSTANT, -1, false);
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root["end"] = add_property_json("End", End(), "float", "", false, 0, 0, 1000 * 60 * 30, CONSTANT, -1, false);
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root["duration"] = add_property_json("Duration", Duration(), "float", "", false, 0, 0, 1000 * 60 * 30, CONSTANT, -1, true);
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// Keep track of settings string
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stringstream properties;
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properties << 0.0f << Position() << Layer() << Start() << End() << Duration();
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// Add Hash of All property values
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root["hash"] = add_property_json("hash", 0.0, "string", properties.str(), false, 0, 0, 1, CONSTANT, -1, true);
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// Return formatted string
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return root.toStyledString();
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}
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