float best_score;
int best_x, best_y;
int i;
+ char buf[32];
foc->haystack_frame[0] = av_frame_clone(in);
for (i=1; i<foc->mipmaps; i++) {
foc->last_x = best_x;
foc->last_y = best_y;
+ snprintf(buf, sizeof(buf), "%f", best_score);
+
av_frame_make_writable(in);
av_dict_set_int(&in->metadata, "lavfi.rect.w", foc->obj_frame->width, 0);
av_dict_set_int(&in->metadata, "lavfi.rect.h", foc->obj_frame->height, 0);
av_dict_set_int(&in->metadata, "lavfi.rect.x", best_x, 0);
av_dict_set_int(&in->metadata, "lavfi.rect.y", best_y, 0);
+ av_dict_set(&in->metadata, "lavfi.rect.score", buf, 0);
return ff_filter_frame(ctx->outputs[0], in);
}