tdm_output_hwc_set_client_target_buffer(tdm_output *output, tbm_surface_h target_buffer, tdm_hwc_region damage);
/**
+ * @brief Unset the client(relative to the TDM) target buffer
+ * @details TODO
+ * @param[in] output A output object
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ * @since 2.0.0
+ */
+tdm_error
+tdm_output_hwc_unset_client_target_buffer(tdm_output *output);
+
+/**
+ * @brief Commit changes for a target_window
+ * @details After all change of a window object are applied, a user commit handler
+ * will be called.
+ * @param[in] hwc_window A window object
+ * @param[in] func A user commit handler
+ * @param[in] user_data The user data
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_output_hwc_commit_client_target_buffer(tdm_output *output, tdm_output_hwc_target_buffer_commit_handler func, void *user_data);
+
+/**
* @brief Validate the output
* @details Instructs the device to inspect all of the layer state and
* determine if there are any composition type changes necessary before
tdm_hwc_window_set_buffer(tdm_hwc_window *hwc_window, tbm_surface_h buffer);
/**
+ * @brief Unset a TBM buffer to a window object
+ * @details A TBM buffer will be applied when the output object of a layer
+ * object is committed.
+ * @param[in] hwc_window A window object
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ * @return #TDM_ERROR_BUSY if #hwc_window can't be updated right now, this
+ * can happen if #hwc_window is involved in the smooth transition from
+ * DEVICE to CLIENT, this shouldn't be interpreted like some critical error.
+ * @since 2.0.0
+ */
+tdm_error
+tdm_hwc_window_unset_buffer(tdm_hwc_window *hwc_window);
+
+/**
* @brief Set a flags to a window object
* @param[in] hwc_window A window object
* @param[in] flags A hwc_window flags
tdm_hwc_window_unset_flags(tdm_hwc_window *hwc_window, tdm_hwc_window_flag flags);
/**
+ * @brief Commit changes for a window object
+ * @details After all change of a window object are applied, a user commit handler
+ * will be called.
+ * @param[in] hwc_window A window object
+ * @param[in] func A user commit handler
+ * @param[in] user_data The user data
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_hwc_window_commit(tdm_hwc_window *hwc_window, tdm_hwc_window_commit_handler func, void *user_data);
+
+/**
* @brief Get the available property array of a video hwc window object.
* @param[in] hwc window A video hwc window object
* @param[out] props The available property array