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Testing JPG -> MagickWand -> raw buffer -> MagickWand -> JPG
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#include <wand/magick_wand.h> | |
#include <iostream> | |
#include <vector> | |
using namespace std; | |
int main(int argc, char* argv[]) | |
{ | |
MagickWand *mw_in = NewMagickWand(); | |
MagickWand *mw_out = NewMagickWand(); | |
MagickWandGenesis(); | |
MagickReadImage(mw_in, argc > 1 ? argv[1] : "logo:"); | |
cout << "Image type: " << MagickGetImageType(mw_in) << endl; | |
cout << "#images: " << MagickGetNumberImages(mw_in) << endl; | |
cout << "Alpha channel: " << MagickGetImageAlphaChannel(mw_in) << endl; | |
cout << "Colorspace: " << MagickGetImageColorspace(mw_in) << endl; | |
cout << "Depth: " << MagickGetImageDepth(mw_in) << endl; | |
const ssize_t x = 0, y = 0, cols = MagickGetImageWidth(mw_in), rows = MagickGetImageHeight(mw_in); | |
const StorageType st = CharPixel; | |
std::vector<unsigned char> buf(3*cols*rows); | |
cout << "Export result: " << MagickExportImagePixels(mw_in, x, y, cols, rows, "RGB", st, &buf[0]) << endl; | |
cout << "Constitute result: " << MagickConstituteImage(mw_out, cols, rows, "RGB", CharPixel, &buf[0]) << endl; | |
cout << "Set colspace result: " << MagickSetImageColorspace(mw_out, RGBColorspace) << endl; | |
cout << "Set image depth result: " << MagickSetImageDepth(mw_out, 8) << endl; | |
MagickResetIterator(mw_out); | |
MagickWriteImage(mw_out, "logo.jpg"); | |
if(mw_in) mw_in = DestroyMagickWand(mw_in); | |
if(mw_out) mw_out = DestroyMagickWand(mw_out); | |
MagickWandTerminus(); | |
return 0; | |
} |
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