89 lines
No EOL
3 KiB
C++
89 lines
No EOL
3 KiB
C++
#include <Magick++.h>
|
|
#include <napi.h>
|
|
|
|
#include <list>
|
|
|
|
using namespace std;
|
|
using namespace Magick;
|
|
|
|
Napi::Value Whisper(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>>();
|
|
string caption = obj.Get("caption").As<Napi::String>().Utf8Value();
|
|
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> captioned;
|
|
Blob caption_blob;
|
|
readImages(&frames, Blob(data.Data(), data.Length()));
|
|
|
|
size_t width = frames.front().baseColumns();
|
|
size_t height = frames.front().baseRows();
|
|
|
|
int dividedWidth = width / 150;
|
|
|
|
Image caption_image;
|
|
caption_image.size(Geometry(to_string(width) + "x" + to_string(height)));
|
|
caption_image.backgroundColor("none");
|
|
caption_image.fillColor("white");
|
|
caption_image.font("Upright");
|
|
caption_image.fontPointsize(width / 6);
|
|
caption_image.textGravity(Magick::CenterGravity);
|
|
caption_image.read("pango:" + caption);
|
|
caption_image.trim();
|
|
caption_image.repage();
|
|
Image caption_fill = caption_image;
|
|
caption_fill.extent(Geometry(width, height), Magick::CenterGravity);
|
|
caption_fill.channel(Magick::AlphaChannel);
|
|
caption_fill.morphology(Magick::EdgeOutMorphology, "Octagon",
|
|
dividedWidth != 0 ? dividedWidth : 1);
|
|
caption_fill.backgroundColor("black");
|
|
caption_fill.alphaChannel(Magick::ShapeAlphaChannel);
|
|
size_t fill_width = caption_fill.columns();
|
|
size_t fill_height = caption_fill.rows();
|
|
caption_image.extent(Geometry(fill_width, fill_height),
|
|
Magick::CenterGravity);
|
|
caption_image.composite(caption_fill, Magick::CenterGravity,
|
|
Magick::DstOverCompositeOp);
|
|
|
|
coalesceImages(&coalesced, frames.begin(), frames.end());
|
|
|
|
for (Image &image : coalesced) {
|
|
list<Image> images;
|
|
image.composite(caption_image, Magick::CenterGravity,
|
|
Magick::OverCompositeOp);
|
|
image.magick(type);
|
|
image.animationDelay(delay == 0 ? image.animationDelay() : delay);
|
|
captioned.push_back(image);
|
|
}
|
|
|
|
optimizeTransparency(captioned.begin(), captioned.end());
|
|
|
|
if (type == "gif") {
|
|
for (Image &image : captioned) {
|
|
image.quantizeDither(false);
|
|
image.quantize();
|
|
}
|
|
}
|
|
|
|
writeImages(captioned.begin(), captioned.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 (std::exception const &err) {
|
|
throw Napi::Error::New(env, err.what());
|
|
} catch (...) {
|
|
throw Napi::Error::New(env, "Unknown error");
|
|
}
|
|
} |