Image *Image_newWithPath_(char *path)
{
Image *self = Image_new();
Image_path_(self, path);
Image_load(self);
return self;
}
int main (int argc, char ** argv)
{
int ret = EXIT_SUCCESS; // unless otherwise noted
const char * in_filename = argv[1];
const char * out_filename = argv[2];
// Read the file
Image * im = Image_load(in_filename);
if(im == NULL) {
fprintf(stderr, "Error: failed to read '%s'\n", in_filename);
return EXIT_FAILURE;
}
// Invert pixel intensity
int n_pixels = im->width * im->height;
int ind;
for(ind = 0; ind < n_pixels; ++ind)
im->data[ind] = 255 - im->data[ind];
// Write out a new file
if(!Image_save(out_filename, im)) {
fprintf(stderr, "Error attempting to write '%s'\n", out_filename);
ret = EXIT_FAILURE;
}
Image_free(im); // a memory leak until you write this function
return ret;
}
IoObject *IoImage_open(IoImage *self, IoObject *locals, IoMessage *m)
{
/*doc Image open(optionalPathString)
Sets the path to optionalPathString if provided and opens the image file.
Returns self on success, Nil on failure.
*/
/*printf("opening Image %p %s\n", self, Image_path(DATA(self)->image));*/
if (IoMessage_argCount(m) > 0)
{
IoSymbol *path = IoMessage_locals_symbolArgAt_(m, locals, 0);
Image_path_(DATA(self)->image, CSTRING(path));
}
Image_load(DATA(self)->image);
IoImage_checkError(self, locals, m);
return self;
}
