mrmBot-Matrix/natives/blur.cc

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#include "common.h"
#include <map>
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#include <string>
#include <vips/vips8>
using namespace std;
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using namespace vips;
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char *Blur(string type, char *BufferData, size_t BufferLength,
ArgumentMap Arguments, size_t *DataSize) {
bool sharp = GetArgument<bool>(Arguments, "sharp");
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VOption *options = VImage::option()->set("access", "sequential");
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VImage in =
VImage::new_from_buffer(BufferData, BufferLength, "",
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type == "gif" ? options->set("n", -1) : options)
.colourspace(VIPS_INTERPRETATION_sRGB);
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if (!in.has_alpha())
in = in.bandjoin(255);
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// 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);
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void *buf;
out.write_to_buffer(("." + type).c_str(), &buf, DataSize);
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vips_error_clear();
vips_thread_shutdown();
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return (char *)buf;
}