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115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/**
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* @file
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* @brief Header file for Stabilizer effect class
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* @author Jonathan Thomas <jonathan@openshot.org>
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* @author Brenno Caldato <brenno.caldato@outlook.com>
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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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#ifndef OPENSHOT_STABILIZER_EFFECT_H
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#define OPENSHOT_STABILIZER_EFFECT_H
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#include "EffectBase.h"
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#include <memory>
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#include "Json.h"
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#include "KeyFrame.h"
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// Store the relative transformation parameters between consecutive frames
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struct EffectTransformParam
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{
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EffectTransformParam() {}
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EffectTransformParam(double _dx, double _dy, double _da) {
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dx = _dx;
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dy = _dy;
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da = _da;
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}
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double dx;
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double dy;
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double da; // angle
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};
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// Stores the global camera trajectory for one frame
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struct EffectCamTrajectory
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{
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EffectCamTrajectory() {}
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EffectCamTrajectory(double _x, double _y, double _a) {
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x = _x;
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y = _y;
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a = _a;
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}
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double x;
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double y;
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double a; // angle
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};
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namespace openshot
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{
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// Forwward decls
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class Frame;
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/**
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* @brief This class stabilizes a video clip to remove undesired shaking and jitter.
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*
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* Adding stabilization is useful to increase video quality overall, since it removes
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* from subtle to harsh unexpected camera movements.
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*/
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class Stabilizer : public EffectBase
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{
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private:
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/// Init effect settings
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void init_effect_details();
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std::string protobuf_data_path;
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Keyframe zoom;
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public:
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std::string teste;
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std::map <size_t,EffectCamTrajectory> trajectoryData; // Save camera trajectory data
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std::map <size_t,EffectTransformParam> transformationData; // Save transormation data
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Stabilizer();
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Stabilizer(std::string clipTrackerDataPath);
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/// @brief 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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///
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/// The frame object is passed into this method, and a frame_number is passed in which
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/// tells the effect which settings to use from its keyframes (starting at 1).
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///
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/// @returns The modified openshot::Frame object
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/// @param frame The frame object that needs the effect applied to it
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/// @param frame_number The frame number (starting at 1) of the effect on the timeline.
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std::shared_ptr<Frame> GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number) override;
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std::shared_ptr<openshot::Frame> GetFrame(int64_t frame_number) override {
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return GetFrame(std::make_shared<openshot::Frame>(), frame_number);
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};
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/// Load protobuf data file
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bool LoadStabilizedData(std::string inputFilePath);
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// Get and Set JSON methods
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std::string Json() const override; ///< Generate JSON string of this object
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void SetJson(const std::string value) override; ///< Load JSON string into this object
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Json::Value JsonValue() const override; ///< Generate Json::Value for this object
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void SetJsonValue(const Json::Value root) override; ///< Load Json::Value into this object
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/// Get all properties for a specific frame (perfect for a UI to display the current state
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/// of all properties at any time)
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std::string PropertiesJSON(int64_t requested_frame) const override;
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};
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}
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#endif
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