31 #include "../../include/effects/Brightness.h" 38 init_effect_details();
45 init_effect_details();
49 void Brightness::init_effect_details()
57 info.
description =
"Adjust the brightness and contrast of the frame's image.";
67 std::shared_ptr<QImage> frame_image = frame->GetImage();
74 unsigned char *pixels = (
unsigned char *) frame_image->bits();
75 int pixel_count = frame_image->width() * frame_image->height();
77 #pragma omp parallel for 78 for (
int pixel = 0; pixel < pixel_count; ++pixel)
81 float factor = (259 * (contrast_value + 255)) / (255 * (259 - contrast_value));
84 int R =
constrain((factor * (pixels[pixel * 4] - 128)) + 128);
85 int G =
constrain((factor * (pixels[pixel * 4 + 1] - 128)) + 128);
86 int B =
constrain((factor * (pixels[pixel * 4 + 2] - 128)) + 128);
90 pixels[pixel * 4] =
constrain(R + (255 * brightness_value));
91 pixels[pixel * 4 + 1] =
constrain(G + (255 * brightness_value));
92 pixels[pixel * 4 + 2] =
constrain(B + (255 * brightness_value));
129 catch (
const std::exception& e)
132 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
143 if (!root[
"brightness"].isNull())
145 if (!root[
"contrast"].isNull())
154 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
155 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
false, requested_frame);
157 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
false, requested_frame);
158 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
false, requested_frame);
159 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
true, requested_frame);
166 return root.toStyledString();
std::string Id() const
Get basic properties.
float Start() const
Get start position (in seconds) of clip (trim start of video)
Brightness()
Blank constructor, useful when using Json to load the effect properties.
Keyframe contrast
Contrast keyframe.
const Json::Value stringToJson(const std::string value)
bool has_audio
Determines if this effect manipulates the audio of a frame.
virtual void SetJsonValue(const Json::Value root)=0
Load Json::Value into this object.
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
void SetJson(const std::string value)
Load JSON string into this object.
std::string PropertiesJSON(int64_t requested_frame) const override
std::string Json() const override
Get and Set JSON methods.
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
virtual Json::Value JsonValue() const =0
Generate Json::Value for this object.
Keyframe brightness
Brightness keyframe. A constant value here will prevent animation.
float Duration() const
Get the length of this clip (in seconds)
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
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...
This namespace is the default namespace for all code in the openshot library.
Json::Value JsonValue() const
Generate Json::Value 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.
int constrain(int color_value)
Constrain a color value from 0 to 255.
float Position() const
Get position on timeline (in seconds)
float End() const
Get end position (in seconds) of clip (trim end of video)
Json::Value JsonValue() const override
Generate Json::Value for this object.
A Keyframe is a collection of Point instances, which is used to vary a number or property over time...
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.
int Layer() const
Get layer of clip on timeline (lower number is covered by higher numbers)
EffectInfoStruct info
Information about the current effect.