mrmBot-Matrix/natives/blurple.cc

60 lines
No EOL
1.8 KiB
C++

#include <Magick++.h>
#include <napi.h>
#include <list>
using namespace std;
using namespace Magick;
Napi::Value Blurple(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
try {
Napi::Object obj = info[0].As<Napi::Object>();
Napi::Buffer<char> data = obj.Get("data").As<Napi::Buffer<char>>();
bool old =
obj.Has("old") ? obj.Get("old").As<Napi::Boolean>().Value() : false;
string type = obj.Get("type").As<Napi::String>().Utf8Value();
int delay =
obj.Has("delay") ? obj.Get("delay").As<Napi::Number>().Int32Value() : 0;
Blob blob;
list<Image> frames;
list<Image> coalesced;
list<Image> blurpled;
readImages(&frames, Blob(data.Data(), data.Length()));
coalesceImages(&coalesced, frames.begin(), frames.end());
for (Image &image : coalesced) {
image.threshold(49151.25);
image.levelColors(old ? "#7289DA" : "#5865F2", "white");
image.magick(type);
image.animationDelay(delay == 0 ? image.animationDelay() : delay);
blurpled.push_back(image);
}
optimizeTransparency(blurpled.begin(), blurpled.end());
if (type == "gif") {
for (Image &image : blurpled) {
image.quantizeDitherMethod(FloydSteinbergDitherMethod);
image.quantize();
}
}
writeImages(blurpled.begin(), blurpled.end(), &blob);
Napi::Object result = Napi::Object::New(env);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)blob.data(),
blob.length()));
result.Set("type", type);
return result;
} catch (Napi::Error const &err) {
throw err;
} catch (std::exception const &err) {
throw Napi::Error::New(env, err.what());
} catch (...) {
throw Napi::Error::New(env, "Unknown error");
}
}