31 #include "../../include/effects/Saturation.h" 38 init_effect_details();
45 init_effect_details();
49 void Saturation::init_effect_details()
67 std::shared_ptr<QImage> frame_image = frame->GetImage();
81 unsigned char *pixels = (
unsigned char *) frame_image->bits();
82 for (
int pixel = 0, byte_index=0; pixel < frame_image->width() * frame_image->height(); pixel++, byte_index+=4)
85 int R = pixels[byte_index];
86 int G = pixels[byte_index + 1];
87 int B = pixels[byte_index + 2];
88 int A = pixels[byte_index + 3];
91 double p = sqrt( (R * R * pR) +
96 R = p + (R - p) * saturation_value;
97 G = p + (G - p) * saturation_value;
98 B = p + (B - p) * saturation_value;
106 pixels[byte_index] = R;
107 pixels[byte_index + 1] = G;
108 pixels[byte_index + 2] = B;
109 pixels[byte_index + 3] = A;
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[
"saturation"].isNull())
180 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
181 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
false, requested_frame);
183 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
false, requested_frame);
184 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
false, requested_frame);
185 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 30 * 60 * 60 * 48,
true, requested_frame);
191 return root.toStyledString();
Json::Value JsonValue()
Generate Json::JsonValue for this object.
void SetJson(std::string value)
Load JSON string into this object.
Saturation()
Blank constructor, useful when using Json to load the effect properties.
std::string Json()
Get and Set JSON methods.
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)
virtual Json::Value JsonValue()=0
Generate Json::JsonValue for this object.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
bool has_audio
Determines if this effect manipulates the audio of a frame.
std::string PropertiesJSON(int64_t requested_frame)
std::string Id()
Get basic properties.
float Position()
Get position on timeline (in seconds)
virtual void SetJsonValue(Json::Value root)=0
Load Json::JsonValue into this object.
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
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.
int constrain(int color_value)
Constrain a color value from 0 to 255.
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...
A Keyframe is a collection of Point instances, which is used to vary a number or property over time...
float Duration()
Get the length of this clip (in seconds)
float Start()
Get start position (in seconds) of clip (trim start of video)
EffectInfoStruct info
Information about the current effect.
Keyframe saturation
The color saturation: 0.0 = black and white, 1.0 = normal, 2.0 = double saturation.