56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
#include <map>
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#include <string>
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#include <vips/vips8>
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#include "common.h"
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using namespace std;
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using namespace vips;
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ArgumentMap Crop(string type, string *outType, char *BufferData, size_t BufferLength,
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[[maybe_unused]] ArgumentMap Arguments, size_t *DataSize) {
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VOption *options = VImage::option()->set("access", "sequential");
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VImage in =
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VImage::new_from_buffer(BufferData, BufferLength, "",
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type == "gif" ? options->set("n", -1) : options)
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.colourspace(VIPS_INTERPRETATION_sRGB);
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int width = in.width();
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int pageHeight = vips_image_get_page_height(in.get_image());
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int nPages = vips_image_get_n_pages(in.get_image());
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vector<VImage> img;
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int finalHeight = 0;
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for (int i = 0; i < nPages; i++) {
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VImage img_frame =
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type == "gif" ? in.crop(0, i * pageHeight, width, pageHeight) : in;
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int frameWidth = img_frame.width();
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int frameHeight = img_frame.height();
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bool widthOrHeight = frameWidth / frameHeight >= 1;
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int size = widthOrHeight ? frameHeight : frameWidth;
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// img_frame.crop(frameWidth - size, frameHeight - size, size, size);
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VImage result = img_frame.smartcrop(
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size, size,
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VImage::option()->set("interesting", VIPS_INTERESTING_CENTRE));
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finalHeight = size;
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img.push_back(result);
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}
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VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
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final.set(VIPS_META_PAGE_HEIGHT, finalHeight);
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void *buf;
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final.write_to_buffer(
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("." + *outType).c_str(), &buf, DataSize,
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*outType == "gif"
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? VImage::option()->set("dither", 0)->set("reoptimise", 1)
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: 0);
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ArgumentMap output;
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output["buf"] = (char *)buf;
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output["width"] = width;
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output["height"] = finalHeight;
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return output;
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} |