strcpy(stack[0].param[PARAM_FACE], "{\\fn}");
if (x1 >= 0 && y1 >= 0) {
- if (x2 >= 0 && y2 >= 0 && (x2 != x1 || y2 != y1))
- av_bprintf(dst, "{\\an1}{\\move(%d,%d,%d,%d)}", x1, y1, x2, y2);
- else
- av_bprintf(dst, "{\\an1}{\\pos(%d,%d)}", x1, y1);
+ /* XXX: here we rescale coordinate assuming they are in DVD resolution
+ * (720x480) since we don't have anything better */
+
+ if (x2 >= 0 && y2 >= 0 && (x2 != x1 || y2 != y1) && x2 >= x1 && y2 >= y1) {
+ /* text rectangle defined, write the text at the center of the rectangle */
+ const int cx = x1 + (x2 - x1)/2;
+ const int cy = y1 + (y2 - y1)/2;
+ const int scaled_x = cx * ASS_DEFAULT_PLAYRESX / 720;
+ const int scaled_y = cy * ASS_DEFAULT_PLAYRESY / 480;
+ av_bprintf(dst, "{\\an5}{\\pos(%d,%d)}", scaled_x, scaled_y);
+ } else {
+ /* only the top left corner, assume the text starts in that corner */
+ const int scaled_x = x1 * ASS_DEFAULT_PLAYRESX / 720;
+ const int scaled_y = y1 * ASS_DEFAULT_PLAYRESY / 480;
+ av_bprintf(dst, "{\\an1}{\\pos(%d,%d)}", scaled_x, scaled_y);
+ }
}
for (; !end && *in; in++) {