28 #include "../../include/effects/Shift.h"
35 init_effect_details();
42 init_effect_details();
46 void Shift::init_effect_details()
54 info.
description =
"Shift the image up, down, left, and right (with infinite wrapping).";
61 std::shared_ptr<Frame>
Shift::GetFrame(std::shared_ptr<Frame> frame, int64_t frame_number)
64 std::shared_ptr<QImage> frame_image = frame->GetImage();
65 unsigned char *pixels = (
unsigned char *) frame_image->bits();
68 double x_shift =
x.
GetValue(frame_number);
69 double x_shift_limit = fmod(abs(x_shift), 1.0);
70 double y_shift =
y.
GetValue(frame_number);
71 double y_shift_limit = fmod(abs(y_shift), 1.0);
74 unsigned char *temp_row =
new unsigned char[frame_image->width() * 4]();
78 for (
int row = 0; row < frame_image->height(); row++) {
80 int starting_row_pixel = row * frame_image->width();
81 memcpy(temp_row, &pixels[starting_row_pixel * 4],
sizeof(
char) * frame_image->width() * 4);
86 int relative_pixel_start = (int)round(frame_image->width() * x_shift_limit);
87 memcpy(&pixels[(starting_row_pixel + relative_pixel_start) * 4], &temp_row[0],
sizeof(
char) * (frame_image->width() - relative_pixel_start) * 4);
90 memcpy(&pixels[starting_row_pixel * 4], &temp_row[(frame_image->width() - relative_pixel_start) * 4],
sizeof(
char) * relative_pixel_start * 4);
91 }
else if (x_shift < 0.0) {
93 int relative_pixel_start = (int)round(frame_image->width() * x_shift_limit);
94 memcpy(&pixels[starting_row_pixel * 4], &temp_row[relative_pixel_start * 4],
sizeof(
char) * (frame_image->width() - relative_pixel_start) * 4);
97 memcpy(&pixels[(starting_row_pixel + (frame_image->width() - relative_pixel_start)) * 4], &temp_row[0],
sizeof(
char) * relative_pixel_start * 4);
102 unsigned char *temp_image =
new unsigned char[frame_image->width() * frame_image->height() * 4]();
103 memcpy(temp_image, pixels,
sizeof(
char) * frame_image->width() * frame_image->height() * 4);
109 int relative_pixel_start = frame_image->width() * (int)round(frame_image->height() * y_shift_limit);
110 memcpy(&pixels[relative_pixel_start * 4], temp_image,
sizeof(
char) * ((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4);
113 memcpy(pixels, &temp_image[((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4],
sizeof(
char) * relative_pixel_start * 4);
115 }
else if (y_shift < 0.0) {
117 int relative_pixel_start = frame_image->width() * (int)round(frame_image->height() * y_shift_limit);
118 memcpy(pixels, &temp_image[relative_pixel_start * 4],
sizeof(
char) * ((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4);
121 memcpy(&pixels[((frame_image->width() * frame_image->height()) - relative_pixel_start) * 4], temp_image,
sizeof(
char) * relative_pixel_start * 4);
158 bool success = reader.parse( value, root );
161 throw InvalidJSON(
"JSON could not be parsed (or is invalid)",
"");
171 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)",
"");
182 if (!root[
"x"].isNull())
184 if (!root[
"y"].isNull())
193 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
194 root[
"position"] =
add_property_json(
"Position", Position(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
195 root[
"layer"] =
add_property_json(
"Track", Layer(),
"int",
"", NULL, 0, 20,
false, requested_frame);
196 root[
"start"] =
add_property_json(
"Start", Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
197 root[
"end"] =
add_property_json(
"End", End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
198 root[
"duration"] =
add_property_json(
"Duration", Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
205 return root.toStyledString();