31 #include "../../include/effects/Shift.h" 38 init_effect_details();
45 init_effect_details();
49 void Shift::init_effect_details()
57 info.
description =
"Shift the image up, down, left, and right (with infinite wrapping).";
64 std::shared_ptr<Frame>
Shift::GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number)
67 std::shared_ptr<QImage> frame_image = frame->GetImage();
68 unsigned char *pixels = (
unsigned char *) frame_image->bits();
71 double x_shift =
x.
GetValue(frame_number);
72 double x_shift_limit = fmod(abs(x_shift), 1.0);
73 double y_shift =
y.
GetValue(frame_number);
74 double y_shift_limit = fmod(abs(y_shift), 1.0);
77 unsigned char *temp_row =
new unsigned char[frame_image->width() * 4]();
81 for (
int row = 0; row < frame_image->height(); row++) {
83 int starting_row_pixel = row * frame_image->width();
84 memcpy(temp_row, &pixels[starting_row_pixel * 4],
sizeof(
char) * frame_image->width() * 4);
89 int relative_pixel_start = (int)round(frame_image->width() * x_shift_limit);
90 memcpy(&pixels[(starting_row_pixel + relative_pixel_start) * 4], &temp_row[0],
sizeof(
char) * (frame_image->width() - relative_pixel_start) * 4);
93 memcpy(&pixels[starting_row_pixel * 4], &temp_row[(frame_image->width() - relative_pixel_start) * 4],
sizeof(
char) * relative_pixel_start * 4);
94 }
else if (x_shift < 0.0) {
96 int relative_pixel_start = (int)round(frame_image->width() * x_shift_limit);
97 memcpy(&pixels[starting_row_pixel * 4], &temp_row[relative_pixel_start * 4],
sizeof(
char) * (frame_image->width() - relative_pixel_start) * 4);
100 memcpy(&pixels[(starting_row_pixel + (frame_image->width() - relative_pixel_start)) * 4], &temp_row[0],
sizeof(char) * relative_pixel_start * 4);
105 unsigned char *temp_image =
new unsigned char[frame_image->width() * frame_image->height() * 4]();
106 memcpy(temp_image, pixels,
sizeof(
char) * frame_image->width() * frame_image->height() * 4);
112 int relative_pixel_start = frame_image->width() * (int)round(frame_image->height() * y_shift_limit);
113 memcpy(&pixels[relative_pixel_start * 4], temp_image,
sizeof(
char) * ((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4);
116 memcpy(pixels, &temp_image[((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4],
sizeof(char) * relative_pixel_start * 4);
118 }
else if (y_shift < 0.0) {
120 int relative_pixel_start = frame_image->width() * (int)round(frame_image->height() * y_shift_limit);
121 memcpy(pixels, &temp_image[relative_pixel_start * 4],
sizeof(
char) * ((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4);
124 memcpy(&pixels[((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4], temp_image,
sizeof(char) * relative_pixel_start * 4);
160 Json::CharReaderBuilder rbuilder;
161 Json::CharReader* reader(rbuilder.newCharReader());
164 bool success = reader->parse( value.c_str(),
165 value.c_str() + value.size(), &root, &errors );
170 throw InvalidJSON(
"JSON could not be parsed (or is invalid)");
177 catch (
const std::exception& e)
180 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
191 if (!root[
"x"].isNull())
193 if (!root[
"y"].isNull())
202 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
203 root[
"position"] =
add_property_json(
"Position",
Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
205 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
206 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
207 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
214 return root.toStyledString();
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...
std::string Json()
Get and Set JSON methods.
std::string PropertiesJSON(int64_t requested_frame)
Keyframe x
Shift the X coordinates (left or right)
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 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.
Shift()
Blank constructor, useful when using Json to load the effect properties.
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
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.
void SetJson(std::string value)
Load JSON string into this object.
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.
Keyframe y
Shift the Y coordinates (up or down)
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)
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
EffectInfoStruct info
Information about the current effect.