31 #include "../../include/effects/Hue.h" 38 init_effect_details();
45 init_effect_details();
49 void Hue::init_effect_details()
64 std::shared_ptr<Frame>
Hue::GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number)
67 std::shared_ptr<QImage> frame_image = frame->GetImage();
70 double degrees = 360.0 *
hue.
GetValue(frame_number);
71 float cosA = cos(degrees*3.14159265f/180);
72 float sinA = sin(degrees*3.14159265f/180);
75 float matrix[3][3] = {{cosA + (1.0f - cosA) / 3.0f, 1.0f/3.0f * (1.0f - cosA) - sqrtf(1.0f/3.0f) * sinA, 1.0f/3.0f * (1.0f - cosA) + sqrtf(1.0f/3.0f) * sinA},
76 {1.0f/3.0f * (1.0f - cosA) + sqrtf(1.0f/3.0f) * sinA, cosA + 1.0f/3.0f*(1.0f - cosA), 1.0f/3.0f * (1.0f - cosA) - sqrtf(1.0f/3.0f) * sinA},
77 {1.0f/3.0f * (1.0f - cosA) - sqrtf(1.0f/3.0f) * sinA, 1.0f/3.0f * (1.0f - cosA) + sqrtf(1.0f/3.0f) * sinA, cosA + 1.0f/3.0f * (1.0f - cosA)}};
80 unsigned char *pixels = (
unsigned char *) frame_image->bits();
81 for (
int pixel = 0, byte_index=0; pixel < frame_image->width() * frame_image->height(); pixel++, byte_index+=4)
84 int R = pixels[byte_index];
85 int G = pixels[byte_index + 1];
86 int B = pixels[byte_index + 2];
87 int A = pixels[byte_index + 3];
90 float rx =
constrain(R * matrix[0][0] + G * matrix[0][1] + B * matrix[0][2]);
91 float gx =
constrain(R * matrix[1][0] + G * matrix[1][1] + B * matrix[1][2]);
92 float bx =
constrain(R * matrix[2][0] + G * matrix[2][1] + B * matrix[2][2]);
95 pixels[byte_index] = rx;
96 pixels[byte_index + 1] = gx;
97 pixels[byte_index + 2] = bx;
98 pixels[byte_index + 3] = A;
129 Json::CharReaderBuilder rbuilder;
130 Json::CharReader* reader(rbuilder.newCharReader());
133 bool success = reader->parse( value.c_str(),
134 value.c_str() + value.size(), &root, &errors );
139 throw InvalidJSON(
"JSON could not be parsed (or is invalid)");
146 catch (
const std::exception& e)
149 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
160 if (!root[
"hue"].isNull())
169 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
170 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
172 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
173 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
174 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
180 return root.toStyledString();
Keyframe hue
Shift the hue coordinates (left or right)
Hue()
Blank constructor, useful when using Json to load the effect properties.
Json::Value JsonValue()
Generate Json::JsonValue for 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...
void SetJson(std::string value)
Load JSON string into this object.
float End()
Get end position (in seconds) of clip (trim end of video)
std::string PropertiesJSON(int64_t requested_frame)
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.
This class shifts the hue of an image, and can be animated with openshot::Keyframe curves over time...
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.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
std::string name
The name of the effect.
std::string Json()
Get and Set JSON methods.
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.
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.