tdm_layer_remove_commit_handler_internal(tdm_layer *layer, tdm_layer_commit_handler func, void *user_data);
tdm_error
+tdm_layer_commit_internal(tdm_private_layer *private_layer, tdm_layer_commit_handler func, void *user_data);
+tdm_error
tdm_layer_commit_pending_data(tdm_private_layer *private_layer);
void
tdm_layer_committed(tdm_private_layer *private_layer, tdm_private_layer_buffer **committed_buffer);