* pipi.c: implement pipi_copy().

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2668 92316355-f0b4-4df1-b90c-862c8a59935f

pipi/pipi.c

@@ -52,3 +52,24 @@ pipi_image_t *pipi_new(int w, int h)
     return img;
 }
 
+pipi_image_t *pipi_copy(pipi_image_t *src)
+{
+    pipi_image_t *dst = pipi_new(src->w, src->h);
+
+    if(src->last_modified != PIPI_PIXELS_UNINITIALISED)
+    {
+        pipi_pixels_t *srcp, *dstp;
+
+        srcp = &src->p[src->last_modified];
+        dstp = &dst->p[src->last_modified];
+
+        memcpy(dstp, srcp, sizeof(pipi_pixels_t));
+        dstp->pixels = malloc(dstp->bytes);
+        memcpy(dstp->pixels, srcp->pixels, dstp->bytes);
+
+        dst->last_modified = src->last_modified;
+    }
+
+    return dst;
+}
+

pipi/pipi.h

@@ -66,6 +66,7 @@ typedef struct pipi_image pipi_image_t;
 
 extern pipi_image_t *pipi_load(const char *);
 extern pipi_image_t *pipi_new(int, int);
+extern pipi_image_t *pipi_copy(pipi_image_t *);
 extern void pipi_free(pipi_image_t *);
 extern void pipi_save(pipi_image_t *, const char *);