hacked image loading to use assman

[laserbrain_demo] / src / image.cc

diff --git a/src/image.cc b/src/image.cc
index c245212..ce930f3 100644 (file)
--- a/src/image.cc
+++ b/src/image.cc
@@ -1,12 +1,13 @@
 #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"
+#include "assman.h"
 #include "image.h"
 
 static int pixel_elements(Image::Format fmt);
@@ -143,12 +144,58 @@ void Image::rotate_180()
        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;
+}
+
+static size_t io_read(void *buf, size_t bytes, void *fp)
+{
+       return ass_fread(buf, 1, bytes, fp);
+}
+
+static long io_seek(long offs, int whence, void *fp)
+{
+       ass_fseek(fp, offs, whence);
+       return ass_ftell(fp);
+}
+
 bool Image::load(const char *fname)
 {
        struct img_pixmap pixmap;
+       struct img_io io = {0, io_read, 0, io_seek};
+       ass_file *fp;
+
+       if(!(fp = ass_fopen(fname, "rb"))) {
+               return false;
+       }
+       io.uptr = fp;
 
        img_init(&pixmap);
-       if(img_load(&pixmap, fname) == -1) {
+       if(img_read(&pixmap, &io) == -1) {
                return false;
        }