mrmBot-Matrix/natives/watermark.cc

66 lines
No EOL
2.1 KiB
C++

#include <napi.h>
#include <list>
#include <Magick++.h>
using namespace std;
using namespace Magick;
class WatermarkWorker : public Napi::AsyncWorker {
public:
WatermarkWorker(Napi::Function& callback, string in_path, string water_path, int gravity, bool resize, string type, int delay)
: Napi::AsyncWorker(callback), in_path(in_path), water_path(water_path), gravity(gravity), resize(resize), type(type), delay(delay) {}
~WatermarkWorker() {}
void Execute() {
list<Image> frames;
list<Image> coalesced;
list<Image> mid;
list<Image> result;
Image watermark;
readImages(&frames, in_path);
watermark.read(water_path);
if (resize) {
string query("x" + to_string(frames.front().baseRows()));
watermark.scale(Geometry(query));
}
coalesceImages(&coalesced, frames.begin(), frames.end());
for (Image &image : coalesced) {
image.composite(watermark, Magick::GravityType(gravity), Magick::OverCompositeOp);
image.magick(type);
mid.push_back(image);
}
optimizeImageLayers(&result, mid.begin(), mid.end());
if (delay != 0) for_each(result.begin(), result.end(), animationDelayImage(delay));
writeImages(result.begin(), result.end(), &blob);
}
void OnOK() {
Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
}
private:
string in_path, water_path, type;
int delay, wordlength, i, n, gravity;
size_t bytes, type_size;
Blob blob;
bool resize;
};
Napi::Value Watermark(const Napi::CallbackInfo &info)
{
Napi::Env env = info.Env();
string in_path = info[0].As<Napi::String>().Utf8Value();
string water = info[1].As<Napi::String>().Utf8Value();
int gravity = info[2].As<Napi::Number>().Int32Value();
bool resize = info[3].As<Napi::Boolean>().Value();
string type = info[4].As<Napi::String>().Utf8Value();
int delay = info[5].As<Napi::Number>().Int32Value();
Napi::Function cb = info[6].As<Napi::Function>();
WatermarkWorker* watermarkWorker = new WatermarkWorker(cb, in_path, water, gravity, resize, type, delay);
watermarkWorker->Queue();
return env.Undefined();
}