54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
#include <map>
|
|
#include <vips/vips8>
|
|
|
|
#include "common.h"
|
|
|
|
using namespace std;
|
|
using namespace vips;
|
|
|
|
char *Uncaption(string *type, char *BufferData, size_t BufferLength,
|
|
ArgumentMap Arguments, size_t *DataSize) {
|
|
float tolerance = GetArgumentWithFallback<float>(Arguments, "tolerance", 0.5);
|
|
|
|
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 = vips_image_get_n_pages(in.get_image());
|
|
|
|
VImage first =
|
|
in.crop(0, 0, 3, pageHeight).colourspace(VIPS_INTERPRETATION_B_W) >
|
|
(255 * tolerance);
|
|
int top, captionWidth, captionHeight;
|
|
first.find_trim(&top, &captionWidth, &captionHeight);
|
|
|
|
vector<VImage> img;
|
|
int newHeight = pageHeight - top;
|
|
if (top == pageHeight) {
|
|
newHeight = pageHeight;
|
|
top = 0;
|
|
}
|
|
for (int i = 0; i < nPages; i++) {
|
|
VImage img_frame = in.crop(0, (i * pageHeight) + top, width, newHeight);
|
|
img.push_back(img_frame);
|
|
}
|
|
VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
|
|
final.set(VIPS_META_PAGE_HEIGHT, newHeight);
|
|
|
|
void *buf;
|
|
final.write_to_buffer(
|
|
("." + *type).c_str(), &buf, DataSize,
|
|
*type == "gif" ? VImage::option()->set("dither", 0)->set("reoptimise", 1)
|
|
: 0);
|
|
|
|
return (char *)buf;
|
|
}
|