* CoreImage loader fails cleanly when specified image doesn't exist

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@3020 92316355-f0b4-4df1-b90c-862c8a59935f

pipi/codec/coreimage.m

@@ -31,7 +31,11 @@ pipi_image_t *pipi_load_coreimage(const char *name)
     NSString *n = [NSString stringWithCString: name];
     CIImage *source;
     NSURL *url = [NSURL fileURLWithPath:n];
+   
     source = [CIImage imageWithContentsOfURL:url];
+    
+    if(source == NULL) return NULL;
+    
     CGRect extent = [source extent];
     size_t w = (size_t)extent.size.width;
     size_t h = (size_t)extent.size.height;
@@ -43,12 +47,12 @@ pipi_image_t *pipi_load_coreimage(const char *name)
     pipi_image_t *img;
     img = pipi_new(w, h);
     img->p[PIPI_PIXELS_RGBA_C].pixels = [myImage bitmapData];
-    img->p[PIPI_PIXELS_RGBA_C].w = w;
-    img->p[PIPI_PIXELS_RGBA_C].h = h;
-    img->p[PIPI_PIXELS_RGBA_C].pitch = ([myImage bytesPerRow]/8) * img->w;
-    img->p[PIPI_PIXELS_RGBA_C].bpp = [myImage bitsPerPixel];
-    img->p[PIPI_PIXELS_RGBA_C].bytes = ([myImage bitsPerPixel]/8) * img->w * img->h;
-    img->last_modified = PIPI_PIXELS_RGBA_C;
+    img->p[PIPI_PIXELS_RGBA_C].w      = w;
+    img->p[PIPI_PIXELS_RGBA_C].h      = h;
+    img->p[PIPI_PIXELS_RGBA_C].pitch  = ([myImage bytesPerRow]/8) * img->w;
+    img->p[PIPI_PIXELS_RGBA_C].bpp    = [myImage bitsPerPixel];
+    img->p[PIPI_PIXELS_RGBA_C].bytes  = ([myImage bitsPerPixel]/8) * img->w * img->h;
+    img->last_modified                = PIPI_PIXELS_RGBA_C;
 
     img->codec_priv = (struct pipi_codec_coreimage *) malloc(sizeof(struct pipi_codec_coreimage *));
     struct pipi_codec_coreimage *infos = (struct pipi_codec_coreimage *) img->codec_priv;