/* $Id$ */

#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;

}