72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
#include <Magick++.h>
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#include <cstring>
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#include <iostream>
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#include <list>
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#include "common.h"
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using namespace std;
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using namespace Magick;
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char *Spin(string type, string *outType, char *BufferData, size_t BufferLength,
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[[maybe_unused]] ArgumentMap Arguments, size_t *DataSize) {
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int delay = GetArgumentWithFallback<int>(Arguments, "delay", 0);
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Blob blob;
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list<Image> frames;
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list<Image> coalesced;
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list<Image> mid;
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try {
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readImages(&frames, Blob(BufferData, BufferLength));
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} catch (Magick::WarningCoder &warning) {
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cerr << "Coder Warning: " << warning.what() << endl;
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} catch (Magick::Warning &warning) {
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cerr << "Warning: " << warning.what() << endl;
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}
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coalesceImages(&coalesced, frames.begin(), frames.end());
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if (type != "gif") {
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list<Image>::iterator it = coalesced.begin();
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for (int i = 0; i < 29; ++i) {
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coalesced.push_back(*it);
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}
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}
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int i = 0;
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for (Image &image : coalesced) {
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image.virtualPixelMethod(Magick::TransparentVirtualPixelMethod);
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image.scale(Geometry("256x256"));
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image.alphaChannel(Magick::SetAlphaChannel);
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double rotation[1] = {(double)360 * i / coalesced.size()};
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image.distort(Magick::ScaleRotateTranslateDistortion, 1, rotation);
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image.magick("GIF");
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mid.push_back(image);
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i++;
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}
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for_each(mid.begin(), mid.end(),
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gifDisposeMethodImage(Magick::BackgroundDispose));
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optimizeTransparency(mid.begin(), mid.end());
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if (delay != 0) {
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for_each(mid.begin(), mid.end(), animationDelayImage(delay));
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} else if (type != "gif") {
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for_each(mid.begin(), mid.end(), animationDelayImage(5));
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}
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for (Image &image : mid) {
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image.quantizeDitherMethod(FloydSteinbergDitherMethod);
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image.quantize();
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}
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writeImages(mid.begin(), mid.end(), &blob);
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*outType = "gif";
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*DataSize = blob.length();
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char *data = (char *)malloc(*DataSize);
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memcpy(data, blob.data(), *DataSize);
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return data;
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}
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