28 #include "../../include/effects/Hue.h" 35 init_effect_details();
42 init_effect_details();
46 void Hue::init_effect_details()
61 std::shared_ptr<Frame>
Hue::GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number)
64 std::shared_ptr<QImage> frame_image = frame->GetImage();
67 double degrees = 360.0 *
hue.
GetValue(frame_number);
68 float cosA = cos(degrees*3.14159265f/180);
69 float sinA = sin(degrees*3.14159265f/180);
72 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},
73 {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},
74 {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)}};
77 unsigned char *pixels = (
unsigned char *) frame_image->bits();
78 for (
int pixel = 0, byte_index=0; pixel < frame_image->width() * frame_image->height(); pixel++, byte_index+=4)
81 int R = pixels[byte_index];
82 int G = pixels[byte_index + 1];
83 int B = pixels[byte_index + 2];
84 int A = pixels[byte_index + 3];
87 float rx =
constrain(R * matrix[0][0] + G * matrix[0][1] + B * matrix[0][2]);
88 float gx =
constrain(R * matrix[1][0] + G * matrix[1][1] + B * matrix[1][2]);
89 float bx =
constrain(R * matrix[2][0] + G * matrix[2][1] + B * matrix[2][2]);
92 pixels[byte_index] = rx;
93 pixels[byte_index + 1] = gx;
94 pixels[byte_index + 2] = bx;
95 pixels[byte_index + 3] = A;
127 bool success = reader.parse( value, root );
130 throw InvalidJSON(
"JSON could not be parsed (or is invalid)",
"");
140 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)",
"");
151 if (!root[
"hue"].isNull())
160 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
161 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
163 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
164 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
165 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
171 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.
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(string value)
Load JSON string into this object.
float End()
Get end position (in seconds) of clip (trim end of video)
Json::Value add_property_json(string name, float value, string type, string memo, Keyframe *keyframe, float min_value, float max_value, bool readonly, int64_t requested_frame)
Generate JSON for a property.
int Layer()
Get layer of clip on timeline (lower number is covered by higher numbers)
string class_name
The class name of the effect.
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...
string Id()
Get basic properties.
float Position()
Get position on timeline (in seconds)
string Json()
Get and Set JSON methods.
string name
The name of the effect.
string description
The description of this effect and what it does.
virtual void SetJsonValue(Json::Value root)=0
Load Json::JsonValue into this object.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
double GetValue(int64_t index)
Get the value at a specific index.
This namespace is the default namespace for all code in the openshot library.
bool has_video
Determines if this effect manipulates the image of a frame.
Exception for invalid JSON.
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.
string PropertiesJSON(int64_t requested_frame)