OpenShot Library | libopenshot 0.3.2
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Blur.h
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1
9// Copyright (c) 2008-2019 OpenShot Studios, LLC
10//
11// SPDX-License-Identifier: LGPL-3.0-or-later
12
13#ifndef OPENSHOT_BLUR_EFFECT_H
14#define OPENSHOT_BLUR_EFFECT_H
15
16#include "../EffectBase.h"
17
18#include "../Frame.h"
19#include "../Json.h"
20#include "../KeyFrame.h"
21
22#include <memory>
23#include <string>
24
25namespace openshot
26{
27
36 class Blur : public EffectBase
37 {
38 private:
40 void init_effect_details();
41
42 // Internal blur methods (inspired and credited to http://blog.ivank.net/fastest-gaussian-blur.html)
43 void boxBlurH(unsigned char *scl, unsigned char *tcl, int w, int h, int r);
44 void boxBlurT(unsigned char *scl, unsigned char *tcl, int w, int h, int r);
45
46
47 public:
52
54 Blur();
55
63 Blur(Keyframe new_horizontal_radius, Keyframe new_vertical_radius, Keyframe new_sigma, Keyframe new_iterations);
64
71 std::shared_ptr<openshot::Frame> GetFrame(int64_t frame_number) override { return GetFrame(std::make_shared<openshot::Frame>(), frame_number); }
72
82 std::shared_ptr<openshot::Frame> GetFrame(std::shared_ptr<openshot::Frame> frame, int64_t frame_number) override;
83
84 // Get and Set JSON methods
85 std::string Json() const override;
86 void SetJson(const std::string value) override;
87 Json::Value JsonValue() const override;
88 void SetJsonValue(const Json::Value root) override;
89
92 std::string PropertiesJSON(int64_t requested_frame) const override;
93 };
94
95}
96
97#endif
Header file for EffectBase class.
Header file for Frame class.
Header file for JSON class.
Header file for the Keyframe class.
This class adjusts the blur of an image, and can be animated with openshot::Keyframe curves over time...
Definition Blur.h:37
Keyframe vertical_radius
Vertical blur radius keyframe. The size of the vertical blur operation in pixels.
Definition Blur.h:49
std::shared_ptr< openshot::Frame > GetFrame(int64_t frame_number) override
This method is required for all derived classes of ClipBase, and returns a new openshot::Frame object...
Definition Blur.h:71
std::string Json() const override
Generate JSON string of this object.
Definition Blur.cpp:155
Json::Value JsonValue() const override
Generate Json::Value for this object.
Definition Blur.cpp:162
Blur()
Blank constructor, useful when using Json to load the effect properties.
Definition Blur.cpp:19
Keyframe iterations
Iterations keyframe. The # of blur iterations per pixel. 3 iterations = Gaussian.
Definition Blur.h:51
std::string PropertiesJSON(int64_t requested_frame) const override
Definition Blur.cpp:211
void SetJson(const std::string value) override
Load JSON string into this object.
Definition Blur.cpp:177
Keyframe sigma
Sigma keyframe. The amount of spread in the blur operation. Should be larger than radius.
Definition Blur.h:50
void SetJsonValue(const Json::Value root) override
Load Json::Value into this object.
Definition Blur.cpp:194
Keyframe horizontal_radius
Horizontal blur radius keyframe. The size of the horizontal blur operation in pixels.
Definition Blur.h:48
This abstract class is the base class, used by all effects in libopenshot.
Definition EffectBase.h:53
A Keyframe is a collection of Point instances, which is used to vary a number or property over time.
Definition KeyFrame.h:53
This namespace is the default namespace for all code in the openshot library.
Definition Compressor.h:29