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95 lines
2.1 KiB
C++
95 lines
2.1 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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* @ref License
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*/
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// Copyright (c) 2008-2019 OpenShot Studios, LLC
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//
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// SPDX-License-Identifier: LGPL-3.0-or-later
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#include "Negate.h"
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#include "Exceptions.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.class_name = "Negate";
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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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std::shared_ptr<openshot::Frame> Negate::GetFrame(std::shared_ptr<openshot::Frame> frame, int64_t frame_number)
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{
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// Make a negative of the images pixels
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frame->GetImage()->invertPixels();
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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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std::string Negate::Json() const {
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// Return formatted string
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return JsonValue().toStyledString();
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}
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// Generate Json::Value for this object
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Json::Value Negate::JsonValue() const {
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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"] = info.class_name;
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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(const std::string value) {
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// Parse JSON string into JSON objects
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try
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{
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const Json::Value root = openshot::stringToJson(value);
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// Set all values that match
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SetJsonValue(root);
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}
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catch (const std::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::Value into this object
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void Negate::SetJsonValue(const 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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std::string Negate::PropertiesJSON(int64_t requested_frame) const {
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// Generate JSON properties list
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Json::Value root = BasePropertiesJSON(requested_frame);
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// Return formatted string
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return root.toStyledString();
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}
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