1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/**
* @file
* @brief Header file for Hue effect class
* @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/>.
*/
#ifndef OPENSHOT_HUE_EFFECT_H
#define OPENSHOT_HUE_EFFECT_H
#include "../EffectBase.h"
#include <cmath>
#include <stdio.h>
#include <memory>
#include "../Json.h"
#include "../KeyFrame.h"
namespace openshot
{
/**
* @brief This class shifts the hue of an image, and can be animated with openshot::Keyframe curves over time.
*
* Shifting hue can adjust the colors in an image towards red, blue, green, or anywhere in between. Animating hue
* can create some fun and interesting effects, but can also be used to change the mood of a scene, etc...
*/
class Hue : public EffectBase
{
private:
/// Init effect settings
void init_effect_details();
public:
Keyframe hue; ///< Shift the hue coordinates (left or right)
/// Blank constructor, useful when using Json to load the effect properties
Hue();
/// Default constructor, which takes 1 curve. The curves will shift the hue of the image.
///
/// @param hue The curve to adjust the hue shift (between 0 and 1)
Hue(Keyframe hue);
/// @brief This method is required for all derived classes of EffectBase, and returns a
/// modified openshot::Frame object
///
/// The frame object is passed into this method, and a frame_number is passed in which
/// tells the effect which settings to use from its keyframes (starting at 1).
///
/// @returns The modified openshot::Frame object
/// @param frame The frame object that needs the effect applied to it
/// @param frame_number The frame number (starting at 1) of the effect on the timeline.
std::shared_ptr<Frame> GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number);
/// Get and Set JSON methods
std::string Json() const override; ///< Generate JSON string of this object
void SetJson(const std::string value); ///< Load JSON string into this object
Json::Value JsonValue() const override; ///< Generate Json::Value for this object
void SetJsonValue(const Json::Value root); ///< Load Json::Value into this object
/// Get all properties for a specific frame (perfect for a UI to display the current state
/// of all properties at any time)
std::string PropertiesJSON(int64_t requested_frame) const override;
};
}
#endif
|
