Added whisper

commands/image-editing/whisper.js

@@ -0,0 +1,21 @@
+const ImageCommand = require("../../classes/imageCommand.js");
+
+class WhisperCommand extends ImageCommand {
+  params(args, url) {
+    const newArgs = args.filter(item => !item.includes(url));
+    return {
+      caption: newArgs.join(" ").replaceAll("&", "\\&amp;").replaceAll(">", "\\&gt;").replaceAll("<", "\\&lt;").replaceAll("\"", "\\&quot;").replaceAll("'", "\\&apos;").replaceAll("%", "\\%")
+    };
+  }
+
+  static description = "Adds a Whisper style caption to an image";
+  static aliases = ["caption4"];
+  static arguments = ["[text]"];
+
+  static requiresText = true;
+  static noText = "You need to provide some text to add a caption!";
+  static noImage = "You need to provide an image to add a caption!";
+  static command = "whisper";
+}
+
+module.exports = WhisperCommand;

natives/image.cc

@@ -35,8 +35,9 @@
 #include "trump.h"
 #include "uncaption.h"
 #include "wall.h"
-#include "wdt.h"
 #include "watermark.h"
+#include "wdt.h"
+#include "whisper.h"
 
 Napi::Object Init(Napi::Env env, Napi::Object exports)
 {
@@ -75,8 +76,9 @@ Napi::Object Init(Napi::Env env, Napi::Object exports)
   exports.Set(Napi::String::New(env, "trump"), Napi::Function::New(env, Trump));
   exports.Set(Napi::String::New(env, "uncaption"), Napi::Function::New(env, Uncaption));
   exports.Set(Napi::String::New(env, "wall"), Napi::Function::New(env, Wall));
-  exports.Set(Napi::String::New(env, "wdt"), Napi::Function::New(env, Wdt));
   exports.Set(Napi::String::New(env, "watermark"), Napi::Function::New(env, Watermark));
+  exports.Set(Napi::String::New(env, "wdt"), Napi::Function::New(env, Wdt));
+  exports.Set(Napi::String::New(env, "whisper"), Napi::Function::New(env, Whisper));
   return exports;
 }
 

natives/whisper.cc

@@ -0,0 +1,89 @@
+#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");
+  }
+}

natives/whisper.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <napi.h>
+
+Napi::Value Whisper(const Napi::CallbackInfo& info);