ret = tdm_voutput_set_commit_func(private_voutput, _tdm_voutput_cb_commit);
if (ret != TDM_ERROR_NONE) {
TDM_ERR("failed: tdm_voutput_set_commit_func");
ret = tdm_voutput_set_commit_func(private_voutput, _tdm_voutput_cb_commit);
if (ret != TDM_ERROR_NONE) {
TDM_ERR("failed: tdm_voutput_set_commit_func");