+
+
+static void
+_tdm_display_ttrace_vblank_cb(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
+ unsigned int tv_sec, unsigned int tv_usec, void *user_data)
+{
+ tdm_error ret = TDM_ERROR_NONE;
+
+ TDM_TRACE_MARK(VBlank);
+
+ ret = tdm_vblank_wait(vblank, 0, 0, 1, _tdm_display_ttrace_vblank_cb, NULL);
+ TDM_RETURN_IF_FAIL(ret == TDM_ERROR_NONE);
+}
+
+INTERN tdm_error
+tdm_display_enable_ttrace_vblank(tdm_display *dpy, tdm_output *output, int enable)
+{
+ static tdm_vblank *vblank = NULL;
+ tdm_error ret = TDM_ERROR_NONE;
+
+ if (!enable) {
+ if (vblank)
+ tdm_vblank_destroy(vblank);
+ vblank = NULL;
+ return TDM_ERROR_NONE;
+ } else {
+ const tdm_output_mode *mode = NULL;
+
+ if (vblank)
+ return TDM_ERROR_NONE;
+
+ vblank = tdm_vblank_create(dpy, output, &ret);
+ TDM_RETURN_VAL_IF_FAIL(vblank != NULL, ret);
+
+ ret = tdm_output_get_mode(output, &mode);
+ TDM_GOTO_IF_FAIL(mode != NULL, enable_fail);
+
+ ret = tdm_vblank_set_fps(vblank, mode->vrefresh);
+ TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, enable_fail);
+
+ ret = tdm_vblank_set_enable_fake(vblank, 1);
+ TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, enable_fail);
+
+ ret = tdm_vblank_wait(vblank, 0, 0, 1, _tdm_display_ttrace_vblank_cb, NULL);
+ TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, enable_fail);
+ }
+
+ return TDM_ERROR_NONE;
+
+enable_fail:
+ if (vblank)
+ tdm_vblank_destroy(vblank);
+ vblank = NULL;
+ return ret;
+}
+
+INTERN tdm_error
+tdm_display_enable_fps(tdm_private_display *private_display, int enable)
+{
+ private_display->print_fps = enable;
+
+ TDM_INFO("print fps: %s", (enable) ? "enable" : "disable");
+
+ return TDM_ERROR_NONE;
+}