mrmBot-Matrix/natives/blur.cc

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#include <map>
#include <string>
#include <vips/vips8>
#include "common.h"
using namespace std;
using namespace vips;
ArgumentMap Blur(string type, string *outType, char *BufferData, size_t BufferLength,
ArgumentMap Arguments, size_t *DataSize) {
bool sharp = GetArgument<bool>(Arguments, "sharp");
VOption *options = VImage::option()->set("access", "sequential");
VImage in =
VImage::new_from_buffer(BufferData, BufferLength, "",
type == "gif" ? options->set("n", -1) : options)
.colourspace(VIPS_INTERPRETATION_sRGB);
if (!in.has_alpha()) in = in.bandjoin(255);
// TODO: find a better way to calculate the intensity for GIFs without
// splitting frames
VImage out =
sharp ? in.sharpen(VImage::option()->set("sigma", 3)) : in.gaussblur(15);
void *buf;
out.write_to_buffer(("." + *outType).c_str(), &buf, DataSize);
ArgumentMap output;
output["buf"] = (char *)buf;
output["width"] = out.width();
output["height"] = vips_image_get_page_height(in.get_image());
return output;
}