27 init_effect_details();
32 pixelization(pixelization), left(left), top(top), right(right), bottom(bottom)
35 init_effect_details();
39 void Pixelate::init_effect_details()
47 info.
description =
"Pixelate (increase or decrease) the number of visible pixels.";
54 std::shared_ptr<openshot::Frame>
58 std::shared_ptr<QImage> frame_image = frame->GetImage();
61 double pixelization_value = std::min(pow(0.001, fabs(
pixelization.
GetValue(frame_number))), 1.0);
67 if (pixelization_value > 0.0) {
68 int w = frame_image->width();
69 int h = frame_image->height();
72 QRect area(QPoint(0,0), frame_image->size());
73 area = area.marginsRemoved({int(left_value * w), int(top_value * h), int(right_value * w), int(bottom_value * h)});
75 int scale_to = (int) (area.width() * pixelization_value);
80 auto frame_scaled = frame_image->copy(area).scaledToWidth(scale_to, Qt::SmoothTransformation);
83 QPainter painter(frame_image.get());
84 painter.drawImage(area, frame_scaled);
125 catch (
const std::exception& e)
128 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
139 if (!root[
"pixelization"].isNull())
141 if (!root[
"left"].isNull())
143 if (!root[
"top"].isNull())
145 if (!root[
"right"].isNull())
147 if (!root[
"bottom"].isNull())
165 return root.toStyledString();
Header file for all Exception classes.
Header file for JSON class.
Header file for Pixelate effect class.
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 Json::Value JsonValue() const
Generate Json::Value for this object.
Json::Value BasePropertiesJSON(int64_t requested_frame) const
Generate JSON object of base properties (recommended to be used by all effects)
virtual void SetJsonValue(const Json::Value root)
Load Json::Value into 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.
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.
Pixelate()
Default constructor, useful when using Json to load the effect properties.
Keyframe right
Size of right margin.
std::string Json() const override
Generate JSON string of this object.
std::string PropertiesJSON(int64_t requested_frame) const override
Keyframe pixelization
Amount of pixelization.
Keyframe left
Size of left margin.
Json::Value JsonValue() const override
Generate Json::Value for this object.
void SetJson(const std::string value) override
Load JSON string into this object.
void SetJsonValue(const Json::Value root) override
Load Json::Value into this object.
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...
Keyframe top
Size of top margin.
Keyframe bottom
Size of bottom margin.
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.