OpenShot Library | libopenshot 0.3.3
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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
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:54
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