#include <string.h>
-#ifndef _MSC_VER
-#include <alloca.h>
-#else
+#if defined(WIN32) || defined(__WIN32__)
#include <malloc.h>
+#else
+#include <alloca.h>
#endif
#include "imago2.h"
flip_horizontal();
}
+void Image::resize_half()
+{
+ int pixsz = pixel_size(fmt);
+ int newxsz = width / 2;
+ int newysz = height / 2;
+
+ if(!newxsz || !newysz) return;
+
+ unsigned char *newpix = new unsigned char[newxsz * newysz * pixsz];
+
+ unsigned char *sptr = (unsigned char*)pixels;
+ unsigned char *dptr = newpix;
+
+ for(int i=0; i<newysz; i++) {
+ if(i & 1) sptr += width * pixsz;
+ for(int j=0; j<newxsz; j++) {
+ memcpy(dptr, sptr, pixsz);
+ dptr += pixsz;
+ sptr += pixsz * 2;
+ }
+ }
+
+ delete [] (char*)pixels;
+ pixels = newpix;
+ width = newxsz;
+ height = newysz;
+}
+
bool Image::load(const char *fname)
{
struct img_pixmap pixmap;