int *max_w, int *max_h, int *preferred_align);
/**
+ * @brief Get the pp vertical preferred align of a display object.
+ * @details -1 means that a TDM backend module doesn't define the value.
+ * @param[in] dpy A display object
+ * @param[out] preferred_align_vertical The preferred align height which TDM can handle
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_display_get_pp_preferred_align_vertical(tdm_display *dpy, int *preferred_align_vertical);
+
+
+/**
* @brief Get the capture capabilities of a display object.
* @param[in] dpy A display object
* @param[out] capabilities The capture capabilities
tdm_output_get_hwc(tdm_output *output, tdm_error *error);
/**
+ * @brief Set the mirror image of the src_output to the output
+ * @param[in] output A output object to display the src_output image
+ * @param[in] src_output A src output object of which image is displayed on the output
+ * @param[in] transform A transform value
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_output_set_mirror(tdm_output *output, tdm_output *src_output, tdm_transform transform);
+
+/**
+ * @brief Unset the mirror
+ * @param[in] output A output object
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_output_unset_mirror(tdm_output *output);
+
+/**
* @brief Get a output object of a layer object
* @param[in] layer A layer object
* @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
tdm_hwc_commit(tdm_hwc *hwc, int sync, tdm_hwc_commit_handler func, void *user_data);
/**
+ * @brief Set the property which has a given id on the hwc object.
+ * @param[in] hwc A hwc object
+ * @param[in] id The property id
+ * @param[in] value The value of the propery id
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_hwc_set_property(tdm_hwc *hwc, uint32_t id, tdm_value value);
+
+/**
+ * @brief Get the property which has a given id on the hwc object.
+ * @param[in] hwc A hwc object
+ * @param[in] id The property id
+ * @param[in] value The value of the propery id
+ * @return #TDM_ERROR_NONE if success. Otherwise, error value.
+ */
+tdm_error
+tdm_hwc_get_property(tdm_hwc *hwc, uint32_t id, tdm_value *value);
+
+/**
* @brief Destroys the given window.
* @param[in] window the pointer of the window to destroy
* @since 2.0.0