31 #include "../../include/effects/Blur.h"
36 Blur::Blur() : horizontal_radius(6.0), vertical_radius(6.0), sigma(3.0), iterations(3.0) {
38 init_effect_details();
43 horizontal_radius(new_horizontal_radius), vertical_radius(new_vertical_radius),
44 sigma(new_sigma), iterations(new_iterations)
47 init_effect_details();
51 void Blur::init_effect_details()
66 std::shared_ptr<Frame>
Blur::GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number)
69 std::shared_ptr<QImage> frame_image = frame->GetImage();
77 int w = frame_image->width();
78 int h = frame_image->height();
81 QImage image_copy = frame_image->copy();
82 std::shared_ptr<QImage> frame_image_2 = std::make_shared<QImage>(image_copy);
85 for (
int iteration = 0; iteration < iteration_value; ++iteration)
88 if (horizontal_radius_value > 0.0) {
90 boxBlurH(frame_image->bits(), frame_image_2->bits(), w, h, horizontal_radius_value);
93 frame_image.swap(frame_image_2);
97 if (vertical_radius_value > 0.0) {
99 boxBlurT(frame_image->bits(), frame_image_2->bits(), w, h, vertical_radius_value);
102 frame_image.swap(frame_image_2);
112 void Blur::boxBlurH(
unsigned char *scl,
unsigned char *tcl,
int w,
int h,
int r) {
113 float iarr = 1.0 / (r + r + 1);
115 #pragma omp parallel for shared (scl, tcl)
116 for (
int i = 0; i < h; ++i) {
117 for (
int ch = 0; ch < 4; ++ch) {
118 int ti = i * w, li = ti, ri = ti + r;
119 int fv = scl[ti * 4 + ch], lv = scl[(ti + w - 1) * 4 + ch], val = (r + 1) * fv;
120 for (
int j = 0; j < r; ++j) {
121 val += scl[(ti + j) * 4 + ch];
123 for (
int j = 0; j <= r; ++j) {
124 val += scl[ri++ * 4 + ch] - fv;
125 tcl[ti++ * 4 + ch] = round(val * iarr);
127 for (
int j = r + 1; j < w - r; ++j) {
128 val += scl[ri++ * 4 + ch] - scl[li++ * 4 + ch];
129 tcl[ti++ * 4 + ch] = round(val * iarr);
131 for (
int j = w - r; j < w; ++j) {
132 val += lv - scl[li++ * 4 + ch];
133 tcl[ti++ * 4 + ch] = round(val * iarr);
139 void Blur::boxBlurT(
unsigned char *scl,
unsigned char *tcl,
int w,
int h,
int r) {
140 float iarr = 1.0 / (r + r + 1);
142 #pragma omp parallel for shared (scl, tcl)
143 for (
int i = 0; i < w; i++) {
144 for (
int ch = 0; ch < 4; ++ch) {
145 int ti = i, li = ti, ri = ti + r * w;
146 int fv = scl[ti * 4 + ch], lv = scl[(ti + w * (h - 1)) * 4 + ch], val = (r + 1) * fv;
147 for (
int j = 0; j < r; j++) val += scl[(ti + j * w) * 4 + ch];
148 for (
int j = 0; j <= r; j++) {
149 val += scl[ri * 4 + ch] - fv;
150 tcl[ti * 4 + ch] = round(val * iarr);
154 for (
int j = r + 1; j < h - r; j++) {
155 val += scl[ri * 4 + ch] - scl[li * 4 + ch];
156 tcl[ti * 4 + ch] = round(val * iarr);
161 for (
int j = h - r; j < h; j++) {
162 val += lv - scl[li * 4 + ch];
163 tcl[ti * 4 + ch] = round(val * iarr);
203 catch (
const std::exception& e)
206 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
217 if (!root[
"horizontal_radius"].isNull())
219 if (!root[
"vertical_radius"].isNull())
221 if (!root[
"sigma"].isNull())
223 if (!root[
"iterations"].isNull())
232 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
233 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
235 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
236 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
237 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
246 return root.toStyledString();
Keyframe vertical_radius
Vertical blur radius keyframe. The size of the vertical blur operation in pixels.
void SetJson(const std::string value)
Load JSON string into this object.
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
std::string Json() const override
Get and Set JSON methods.
Json::Value JsonValue() const override
Generate Json::Value for this object.
Blur()
Blank constructor, useful when using Json to load the effect properties.
std::shared_ptr< Frame > GetFrame(std::shared_ptr< Frame > frame, int64_t frame_number)
This method is required for all derived classes of EffectBase, and returns a modified openshot::Frame...
Keyframe iterations
Iterations keyframe. The # of blur iterations per pixel. 3 iterations = Gaussian.
std::string PropertiesJSON(int64_t requested_frame) const override
Keyframe sigma
Sigma keyframe. The amount of spread in the blur operation. Should be larger than radius.
Keyframe horizontal_radius
Horizontal blur radius keyframe. The size of the horizontal blur operation in pixels.
float End() const
Get end position (in seconds) of clip (trim end of video)
float Start() const
Get start position (in seconds) of clip (trim start of video)
float Duration() const
Get the length of this clip (in seconds)
std::string Id() const
Get basic properties.
int Layer() const
Get layer of clip on timeline (lower number is covered by higher numbers)
float Position() const
Get position on timeline (in seconds)
Json::Value add_property_json(std::string name, float value, std::string type, std::string memo, const Keyframe *keyframe, float min_value, float max_value, bool readonly, int64_t requested_frame) const
Generate JSON for a property.
virtual void SetJsonValue(const Json::Value root)=0
Load Json::Value into this object.
virtual Json::Value JsonValue() const =0
Generate Json::Value for this object.
EffectInfoStruct info
Information about the current effect.
Exception for invalid JSON.
A Keyframe is a collection of Point instances, which is used to vary a number or property over time.
int GetInt(int64_t index) const
Get the rounded INT value at a specific index.
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
double GetValue(int64_t index) const
Get the value at a specific index.
Json::Value JsonValue() const
Generate Json::Value for this object.
This namespace is the default namespace for all code in the openshot library.
const Json::Value stringToJson(const std::string value)
bool has_video
Determines if this effect manipulates the image of a frame.
bool has_audio
Determines if this effect manipulates the audio of a frame.
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
std::string description
The description of this effect and what it does.