extern int tdm_ttrace_module;
extern int tdm_ttrace_output;
-int
-tdm_display_is_valid(tdm_display *display);
tdm_private_display *
tdm_display_get(void);
tdm_error
tdm_output_init(tdm_private_display *private_display);
-int
-tdm_output_is_valid(tdm_output *output);
void
tdm_output_thread_cb_change(tdm_private_display *private_display, void *object, tdm_thread_cb_base *cb_base, void *user_data);