mrmBot-Matrix/natives/freeze.cc

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#include <Magick++.h>
#include <napi.h>
#include <list>
using namespace std;
using namespace Magick;
Napi::Value Freeze(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
try {
Napi::Object obj = info[0].As<Napi::Object>();
string path = obj.Get("path").As<Napi::String>().Utf8Value();
bool loop =
obj.Has("loop") ? obj.Get("loop").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;
int frame = obj.Has("frame")
? obj.Get("frame").As<Napi::Number>().Int32Value()
: -1;
Blob blob;
list<Image> frames;
readImages(&frames, path);
if (frame >= 0 && !loop) {
size_t frameSize = frames.size();
int framePos = clamp(frame, 0, (int)frameSize);
frames.resize(framePos + 1);
}
for_each(frames.begin(), frames.end(),
animationIterationsImage(loop ? 0 : 1));
for_each(frames.begin(), frames.end(), magickImage(type));
if (delay != 0)
for_each(frames.begin(), frames.end(), animationDelayImage(delay));
writeImages(frames.begin(), frames.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");
}
}