31 #include "../../include/effects/ColorShift.h"
36 ColorShift::ColorShift() : red_x(0.0), red_y(0.0), green_x(0.0), green_y(0.0), blue_x(0.0), blue_y(0.0), alpha_x(0.0), alpha_y(0.0) {
38 init_effect_details();
43 red_x(red_x), red_y(red_y), green_x(green_x), green_y(green_y), blue_x(blue_x), blue_y(blue_y), alpha_x(alpha_x), alpha_y(alpha_y)
46 init_effect_details();
50 void ColorShift::init_effect_details()
58 info.
description =
"Shift the colors of an image up, down, left, and right (with infinite wrapping).";
68 std::shared_ptr<QImage> frame_image = frame->GetImage();
69 unsigned char *pixels = (
unsigned char *) frame_image->bits();
72 int frame_image_width = frame_image->width();
73 int frame_image_height = frame_image->height();
78 int red_x_shift_limit = round(frame_image_width * fmod(fabs(red_x_shift), 1.0));
80 int red_y_shift_limit = round(frame_image_height * fmod(fabs(red_y_shift), 1.0));
83 int green_x_shift_limit = round(frame_image_width * fmod(fabs(green_x_shift), 1.0));
85 int green_y_shift_limit = round(frame_image_height * fmod(fabs(green_y_shift), 1.0));
88 int blue_x_shift_limit = round(frame_image_width * fmod(fabs(blue_x_shift), 1.0));
90 int blue_y_shift_limit = round(frame_image_height * fmod(fabs(blue_y_shift), 1.0));
93 int alpha_x_shift_limit = round(frame_image_width * fmod(fabs(alpha_x_shift), 1.0));
95 int alpha_y_shift_limit = round(frame_image_height * fmod(fabs(alpha_y_shift), 1.0));
98 unsigned char *temp_image =
new unsigned char[frame_image_width * frame_image_height * 4]();
99 memcpy(temp_image, pixels,
sizeof(
char) * frame_image_width * frame_image_height * 4);
102 int starting_row_index = 0;
111 int red_starting_row_index = 0;
112 int green_starting_row_index = 0;
113 int blue_starting_row_index = 0;
114 int alpha_starting_row_index = 0;
116 int red_pixel_offset = 0;
117 int green_pixel_offset = 0;
118 int blue_pixel_offset = 0;
119 int alpha_pixel_offset = 0;
122 for (
int row = 0; row < frame_image_height; row++) {
123 for (
int col = 0; col < frame_image_width; col++) {
125 starting_row_index = row * frame_image_width * 4;
126 byte_index = starting_row_index + (col * 4);
127 red_starting_row_index = starting_row_index;
128 green_starting_row_index = starting_row_index;
129 blue_starting_row_index = starting_row_index;
130 alpha_starting_row_index = starting_row_index;
132 red_pixel_offset = 0;
133 green_pixel_offset = 0;
134 blue_pixel_offset = 0;
135 alpha_pixel_offset = 0;
138 R = temp_image[byte_index];
139 G = temp_image[byte_index + 1];
140 B = temp_image[byte_index + 2];
141 A = temp_image[byte_index + 3];
144 if (red_x_shift > 0.0)
145 red_pixel_offset = (col + red_x_shift_limit) % frame_image_width;
146 if (red_x_shift < 0.0)
147 red_pixel_offset = (frame_image_width + col - red_x_shift_limit) % frame_image_width;
148 if (green_x_shift > 0.0)
149 green_pixel_offset = (col + green_x_shift_limit) % frame_image_width;
150 if (green_x_shift < 0.0)
151 green_pixel_offset = (frame_image_width + col - green_x_shift_limit) % frame_image_width;
152 if (blue_x_shift > 0.0)
153 blue_pixel_offset = (col + blue_x_shift_limit) % frame_image_width;
154 if (blue_x_shift < 0.0)
155 blue_pixel_offset = (frame_image_width + col - blue_x_shift_limit) % frame_image_width;
156 if (alpha_x_shift > 0.0)
157 alpha_pixel_offset = (col + alpha_x_shift_limit) % frame_image_width;
158 if (alpha_x_shift < 0.0)
159 alpha_pixel_offset = (frame_image_width + col - alpha_x_shift_limit) % frame_image_width;
162 if (red_y_shift > 0.0)
163 red_starting_row_index = ((row + red_y_shift_limit) % frame_image_height) * frame_image_width * 4;
164 if (red_y_shift < 0.0)
165 red_starting_row_index = ((frame_image_height + row - red_y_shift_limit) % frame_image_height) * frame_image_width * 4;
166 if (green_y_shift > 0.0)
167 green_starting_row_index = ((row + green_y_shift_limit) % frame_image_height) * frame_image_width * 4;
168 if (green_y_shift < 0.0)
169 green_starting_row_index = ((frame_image_height + row - green_y_shift_limit) % frame_image_height) * frame_image_width * 4;
170 if (blue_y_shift > 0.0)
171 blue_starting_row_index = ((row + blue_y_shift_limit) % frame_image_height) * frame_image_width * 4;
172 if (blue_y_shift < 0.0)
173 blue_starting_row_index = ((frame_image_height + row - blue_y_shift_limit) % frame_image_height) * frame_image_width * 4;
174 if (alpha_y_shift > 0.0)
175 alpha_starting_row_index = ((row + alpha_y_shift_limit) % frame_image_height) * frame_image_width * 4;
176 if (alpha_y_shift < 0.0)
177 alpha_starting_row_index = ((frame_image_height + row - alpha_y_shift_limit) % frame_image_height) * frame_image_width * 4;
180 pixels[red_starting_row_index + 0 + (red_pixel_offset * 4)] = R;
181 pixels[green_starting_row_index + 1 + (green_pixel_offset * 4)] = G;
182 pixels[blue_starting_row_index + 2 + (blue_pixel_offset * 4)] = B;
183 pixels[alpha_starting_row_index + 3 + (alpha_pixel_offset * 4)] = A;
230 catch (
const std::exception& e)
233 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
244 if (!root[
"red_x"].isNull())
246 if (!root[
"red_y"].isNull())
248 if (!root[
"green_x"].isNull())
250 if (!root[
"green_y"].isNull())
252 if (!root[
"blue_x"].isNull())
254 if (!root[
"blue_y"].isNull())
256 if (!root[
"alpha_x"].isNull())
258 if (!root[
"alpha_y"].isNull())
267 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
268 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
270 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
271 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
272 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
285 return root.toStyledString();
float End() const
Get end position (in seconds) of clip (trim end of video)
float Start() const
Get start position (in seconds) of clip (trim start of video)
float Duration() const
Get the length of this clip (in seconds)
std::string Id() const
Get basic properties.
int Layer() const
Get layer of clip on timeline (lower number is covered by higher numbers)
float Position() const
Get position on timeline (in seconds)
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.
Keyframe blue_x
Shift the Blue X coordinates (left or right)
std::string Json() const override
Get and Set JSON methods.
Keyframe red_y
Shift the Red Y coordinates (up or down)
Keyframe alpha_y
Shift the Alpha Y coordinates (up or down)
std::string PropertiesJSON(int64_t requested_frame) const override
Keyframe green_y
Shift the Green Y coordinates (up or down)
Keyframe alpha_x
Shift the Alpha X coordinates (left or right)
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
Json::Value JsonValue() const override
Generate Json::Value for this object.
void SetJson(const std::string value)
Load JSON string 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...
Keyframe red_x
Shift the Red X coordinates (left or right)
Keyframe green_x
Shift the Green X coordinates (left or right)
Keyframe blue_y
Shift the Blue Y coordinates (up or down)
ColorShift()
Blank constructor, useful when using Json to load the effect properties.
virtual void SetJsonValue(const Json::Value root)=0
Load Json::Value into this object.
virtual Json::Value JsonValue() const =0
Generate Json::Value for this object.
EffectInfoStruct info
Information about the current effect.
Exception for invalid JSON.
A Keyframe is a collection of Point instances, which is used to vary a number or property over time.
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
double GetValue(int64_t index) const
Get the value at a specific index.
Json::Value JsonValue() const
Generate Json::Value for this object.
This namespace is the default namespace for all code in the openshot library.
const Json::Value stringToJson(const std::string value)
bool has_video
Determines if this effect manipulates the image of a frame.
bool has_audio
Determines if this effect manipulates the audio of a frame.
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
std::string description
The description of this effect and what it does.