Port explode/implode, add new playing messages

natives/explode.cc

@@ -1,57 +1,52 @@
-#include <Magick++.h>
-
-#include <cstring>
-#include <iostream>
-#include <list>
-#include <map>
-#include <string>
+#include <vips/vips8>
 
 #include "common.h"
 
 using namespace std;
-using namespace Magick;
+using namespace vips;
 
 char *Explode(string type, string *outType, char *BufferData,
               size_t BufferLength, ArgumentMap Arguments, size_t *DataSize) {
-  int amount = GetArgument<int>(Arguments, "amount");
-  int delay = GetArgumentWithFallback<int>(Arguments, "delay", 0);
+  bool implode = GetArgument<bool>(Arguments, "implode");
+  string basePath = GetArgument<string>(Arguments, "basePath");
 
-  Blob blob;
+  VOption *options = VImage::option();
 
-  list<Image> frames;
-  list<Image> coalesced;
-  list<Image> blurred;
-  try {
-    readImages(&frames, Blob(BufferData, BufferLength));
-  } catch (Magick::WarningCoder &warning) {
-    cerr << "Coder Warning: " << warning.what() << endl;
-  } catch (Magick::Warning &warning) {
-    cerr << "Warning: " << warning.what() << endl;
+  VImage in =
+      VImage::new_from_buffer(
+          BufferData, BufferLength, "",
+          type == "gif" ? options->set("n", -1)->set("access", "sequential")
+                        : options)
+          .colourspace(VIPS_INTERPRETATION_sRGB);
+  if (!in.has_alpha()) in = in.bandjoin(255);
+
+  int width = in.width();
+  int pageHeight = vips_image_get_page_height(in.get_image());
+  int nPages = vips_image_get_n_pages(in.get_image());
+
+  string distortPath = basePath + "assets/images/" +
+                       (implode ? "linearimplode.png" : "linearexplode.png");
+  VImage distort =
+      (VImage::new_from_file(distortPath.c_str())
+           .resize(width / 500.0, VImage::option()
+                                      ->set("vscale", pageHeight / 500.0)
+                                      ->set("kernel", VIPS_KERNEL_CUBIC)) /
+       65535);
+
+  VImage distortImage = (distort[0] * width).bandjoin(distort[1] * pageHeight);
+
+  vector<VImage> img;
+  for (int i = 0; i < nPages; i++) {
+    VImage img_frame =
+        type == "gif" ? in.crop(0, i * pageHeight, width, pageHeight) : in;
+    VImage mapped = img_frame.mapim(distortImage);
+    img.push_back(mapped);
   }
-  coalesceImages(&coalesced, frames.begin(), frames.end());
+  VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
+  final.set(VIPS_META_PAGE_HEIGHT, pageHeight);
 
-  for (Image &image : coalesced) {
-    image.implode(amount);
-    image.magick(*outType);
-    blurred.push_back(image);
-  }
+  void *buf;
+  final.write_to_buffer(("." + *outType).c_str(), &buf, DataSize);
 
-  optimizeTransparency(blurred.begin(), blurred.end());
-
-  if (*outType == "gif") {
-    for (Image &image : blurred) {
-      image.quantizeDither(false);
-      image.quantize();
-      if (delay != 0) image.animationDelay(delay);
-    }
-  }
-
-  writeImages(blurred.begin(), blurred.end(), &blob);
-
-  *DataSize = blob.length();
-
-  // workaround because the data is tied to the blob
-  char *data = (char *)malloc(*DataSize);
-  memcpy(data, blob.data(), *DataSize);
-  return data;
+  return (char *)buf;
 }