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mrmBot-Matrix
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Port crop

This commit is contained in:
Essem 2022-02-22 21:21:06 -06:00
parent 8b59e70fe5
commit 9e4cdd7120
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GPG Key ID: 7D497397CC3A2A8C
1 changed files with 34 additions and 37 deletions
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71
natives/crop.cc
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@ -1,11 +1,11 @@
#include <Magick++.h>
#include <napi.h>
#include <iostream>
#include <list>
#include <vips/vips8>
using namespace std;
using namespace Magick;
using namespace vips;
Napi::Value Crop(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
@ -17,49 +17,46 @@ Napi::Value Crop(const Napi::CallbackInfo &info) {
int delay =
obj.Has("delay") ? obj.Get("delay").As<Napi::Number>().Int32Value() : 0;
Blob blob;
VOption *options = VImage::option()->set("access", "sequential");
list<Image> frames;
list<Image> coalesced;
list<Image> mid;
try {
readImages(&frames, Blob(data.Data(), data.Length()));
} catch (Magick::WarningCoder &warning) {
cerr << "Coder Warning: " << warning.what() << endl;
} catch (Magick::Warning &warning) {
cerr << "Warning: " << warning.what() << endl;
}
coalesceImages(&coalesced, frames.begin(), frames.end());
VImage in =
VImage::new_from_buffer(data.Data(), data.Length(), "",
type == "gif" ? options->set("n", -1) : options)
.colourspace(VIPS_INTERPRETATION_sRGB);
for (Image &image : coalesced) {
image.extent(Geometry(to_string(image.columns() / image.rows() >= 1
? image.rows()
: image.columns()) +
"x"),
Magick::CenterGravity);
image.extent(Geometry("x" + to_string(image.columns() / image.rows() <= 1
? image.columns()
: image.rows())),
Magick::CenterGravity);
image.magick(type);
mid.push_back(image);
int width = in.width();
int page_height = vips_image_get_page_height(in.get_image());
int n_pages = vips_image_get_n_pages(in.get_image());
vector<VImage> img;
int finalHeight = 0;
for (int i = 0; i < n_pages; i++) {
VImage img_frame =
type == "gif" ? in.crop(0, i * page_height, width, page_height) : in;
int frameWidth = img_frame.width();
int frameHeight = img_frame.height();
bool widthOrHeight = frameWidth / frameHeight >= 1;
int size = widthOrHeight ? frameHeight : frameWidth;
//img_frame.crop(frameWidth - size, frameHeight - size, size, size);
VImage result = img_frame.smartcrop(size, size, VImage::option()->set("interesting", VIPS_INTERESTING_CENTRE));
finalHeight = size;
img.push_back(result);
}
optimizeTransparency(mid.begin(), mid.end());
VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
final.set(VIPS_META_PAGE_HEIGHT, finalHeight);
if (delay) final.set("delay", delay);
if (type == "gif") {
for (Image &image : mid) {
image.quantizeDither(false);
image.quantize();
if (delay != 0) image.animationDelay(delay);
}
}
void *buf;
size_t length;
final.write_to_buffer(
("." + type).c_str(), &buf, &length,
type == "gif" ? VImage::option()->set("dither", 0) : 0);
writeImages(mid.begin(), mid.end(), &blob);
vips_thread_shutdown();
Napi::Object result = Napi::Object::New(env);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)blob.data(),
blob.length()));
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)buf, length));
result.Set("type", type);
return result;
} catch (std::exception const &err) {