/*
 * call-seq:
 *   text ( x, y, text, color=0, font=<lru or "cetus">, size=<lru or 20> ) -> nil
 *
 * Draws a text with specified parameters. If font and fontsize given,
 * it is saved for future call of Osd#text and Osd#text_size.
 */

static VALUE osd_text(int argc, VALUE *argv, VALUE self) {