42 lines
1.2 KiB
C++
42 lines
1.2 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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VImage sepia = VImage::new_matrixv(3, 3, 0.3588, 0.7044, 0.1368, 0.2990, 0.5870,
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0.1140, 0.2392, 0.4696, 0.0912);
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ArgumentMap Colors(string type, string *outType, char *BufferData,
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size_t BufferLength, ArgumentMap Arguments, size_t *DataSize) {
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string color = GetArgument<string>(Arguments, "color");
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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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VImage out;
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if (color == "grayscale") {
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out = in.colourspace(VIPS_INTERPRETATION_B_W);
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} else if (color == "sepia") {
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out = in.extract_band(0, VImage::option()->set("n", 3)).recomb(sepia);
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}
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void *buf;
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out.write_to_buffer(("." + *outType).c_str(), &buf, DataSize);
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ArgumentMap output;
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output["buf"] = (char *)buf;
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output["width"] = out.width();
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output["height"] = vips_image_get_page_height(out.get_image());
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return output;
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}
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