31 #include "../../include/effects/Pixelate.h" 38 init_effect_details();
43 pixelization(pixelization), left(left), top(top), right(right), bottom(bottom)
46 init_effect_details();
50 void Pixelate::init_effect_details()
58 info.
description =
"Pixelate (increase or decrease) the number of visible pixels.";
68 std::shared_ptr<QImage> frame_image = frame->GetImage();
77 if (pixelization_value > 0.0) {
79 std::shared_ptr<QImage> smaller_frame_image = std::shared_ptr<QImage>(
new QImage(frame_image->scaledToWidth(std::max(frame_image->width() * pixelization_value, 2.0), Qt::SmoothTransformation)));
82 std::shared_ptr<QImage> pixelated_image = std::shared_ptr<QImage>(
new QImage(smaller_frame_image->scaledToWidth(frame_image->width(), Qt::FastTransformation).convertToFormat(QImage::Format_RGBA8888)));
85 unsigned char *pixels = (
unsigned char *) frame_image->bits();
86 unsigned char *pixelated_pixels = (
unsigned char *) pixelated_image->bits();
89 int top_bar_height = top_value * frame_image->height();
90 int bottom_bar_height = bottom_value * frame_image->height();
91 int left_bar_width = left_value * frame_image->width();
92 int right_bar_width = right_value * frame_image->width();
95 for (
int row = 0; row < frame_image->height(); row++) {
98 if ((row >= top_bar_height) && (row <= frame_image->height() - bottom_bar_height)) {
99 memcpy(&pixels[(row * frame_image->width() + left_bar_width) * 4], &pixelated_pixels[(row * frame_image->width() + left_bar_width) * 4],
sizeof(
char) * (frame_image->width() - left_bar_width - right_bar_width) * 4);
104 smaller_frame_image.reset();
105 pixelated_image.reset();
140 Json::CharReaderBuilder rbuilder;
141 Json::CharReader* reader(rbuilder.newCharReader());
144 bool success = reader->parse( value.c_str(),
145 value.c_str() + value.size(), &root, &errors );
150 throw InvalidJSON(
"JSON could not be parsed (or is invalid)");
157 catch (
const std::exception& e)
160 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
171 if (!root[
"pixelization"].isNull())
173 if (!root[
"left"].isNull())
175 if (!root[
"top"].isNull())
177 if (!root[
"right"].isNull())
179 if (!root[
"bottom"].isNull())
188 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
189 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
191 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
192 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
193 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
203 return root.toStyledString();
Pixelate()
Blank constructor, useful when using Json to load the effect properties.
Keyframe bottom
Size of bottom margin.
Keyframe pixelization
Amount of pixelization.
float End()
Get end position (in seconds) of clip (trim end of video)
int Layer()
Get layer of clip on timeline (lower number is covered by higher numbers)
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...
virtual Json::Value JsonValue()=0
Generate Json::JsonValue for this object.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
std::string PropertiesJSON(int64_t requested_frame)
bool has_audio
Determines if this effect manipulates the audio of a frame.
Keyframe right
Size of right margin.
std::string Id()
Get basic properties.
float Position()
Get position on timeline (in seconds)
Json::Value JsonValue()
Generate Json::JsonValue for this object.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
virtual void SetJsonValue(Json::Value root)=0
Load Json::JsonValue into this object.
Keyframe top
Size of top margin.
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
Json::Value add_property_json(std::string name, float value, std::string type, std::string memo, Keyframe *keyframe, float min_value, float max_value, bool readonly, int64_t requested_frame)
Generate JSON for a property.
This namespace is the default namespace for all code in the openshot library.
Json::Value JsonValue() const
Generate Json::JsonValue for this object.
std::string description
The description of this effect and what it does.
bool has_video
Determines if this effect manipulates the image of a frame.
Exception for invalid JSON.
double GetValue(int64_t index) const
Get the value at a specific index.
void SetJson(std::string value)
Load JSON string into this object.
A Keyframe is a collection of Point instances, which is used to vary a number or property over time...
std::string Json()
Get and Set JSON methods.
float Duration()
Get the length of this clip (in seconds)
float Start()
Get start position (in seconds) of clip (trim start of video)
Keyframe left
Size of left margin.
EffectInfoStruct info
Information about the current effect.