Viewing file:  nnquant.c (1.15 KB) -rw-r--r--
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/* $Id$ */
#include "gd.h"
#include <stdio.h>
#include <stdlib.h>
void save_png(gdImagePtr im, const char *filename)
{
FILE *fp;
fp = fopen(filename, "wb");
if (!fp) {
fprintf(stderr, "Can't save png image %s\n", filename);
return;
}
#ifdef HAVE_LIBPNG
gdImagePng(im, fp);
#else
printf("No PNG support. Cannot save image.\n");
#endif
fclose(fp);
}
int main()
{
#ifdef HAVE_JPEG
gdImagePtr im, im2;
FILE *fp;
char path[2048];
fp=fopen("resampledbug.jpeg", "rb");
if (!fp) {
fprintf(stderr, "Can't load /home/pierre/IM3801.jpg\n");
return 1;
}
im = gdImageCreateFromJpeg(fp);
fclose(fp);
if (!im) {
fprintf(stderr, "Can't load TIFF image %s\n", path);
return 1;
}
im2 = gdImageNeuQuant(im, 256, 3);
if (im2) {
gdImageSaveAlpha(im2, 1);
save_png(im2, "a_nnquant.png");
gdImageDestroy(im2);
} else {
printf("neu quant failed.\n");
}
gdImageTrueColorToPalette(im, 1, 256);
gdImageSaveAlpha(im, 1);
save_png(im, "a_jquant_dither.png");
gdImageDestroy(im);
#else
printf("JPEG support is required for this example. Please recompile GD with JPEG or change this example to use another format as input.");
return 1;
#endif
return 0;
}
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