52 lines
No EOL
1.5 KiB
C++
52 lines
No EOL
1.5 KiB
C++
#include "common.h"
|
|
#include <math.h>
|
|
|
|
#include <vips/vips8>
|
|
|
|
using namespace std;
|
|
using namespace vips;
|
|
|
|
char *Bounce(string *type, char *BufferData, size_t BufferLength,
|
|
ArgumentMap Arguments, size_t *DataSize) {
|
|
|
|
VOption *options = VImage::option();
|
|
|
|
VImage in =
|
|
VImage::new_from_buffer(
|
|
BufferData, BufferLength, "",
|
|
*type == "gif" ? options->set("n", -1)->set("access", "sequential")
|
|
: options)
|
|
.colourspace(VIPS_INTERPRETATION_sRGB);
|
|
if (!in.has_alpha())
|
|
in = in.bandjoin(255);
|
|
|
|
int width = in.width();
|
|
int pageHeight = vips_image_get_page_height(in.get_image());
|
|
int nPages = *type == "gif" ? vips_image_get_n_pages(in.get_image()) : 15;
|
|
double mult = M_PI / nPages;
|
|
int halfHeight = pageHeight / 2;
|
|
|
|
vector<VImage> img;
|
|
for (int i = 0; i < nPages; i++) {
|
|
VImage img_frame =
|
|
*type == "gif" ? in.crop(0, i * pageHeight, width, pageHeight) : in;
|
|
double height = halfHeight * ((abs(sin(i * mult)) * -1) + 1);
|
|
VImage embedded = img_frame.embed(0, height, width, pageHeight + halfHeight);
|
|
img.push_back(embedded);
|
|
}
|
|
VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
|
|
final.set(VIPS_META_PAGE_HEIGHT, pageHeight + halfHeight);
|
|
if (*type != "gif") {
|
|
vector<int> delay(30, 50);
|
|
final.set("delay", delay);
|
|
}
|
|
|
|
void *buf;
|
|
final.write_to_buffer(".gif", &buf, DataSize);
|
|
|
|
*type = "gif";
|
|
|
|
vips_error_clear();
|
|
vips_thread_shutdown();
|
|
return (char *)buf;
|
|
} |