- * @brief Creates a new window on the given display.
- * @param[in] output A output object
- * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
- * @return A created window object
- * @since 2.0.0
- */
-tdm_hwc_window *
-tdm_output_hwc_create_window(tdm_output *output, tdm_error *error);
-
-/**
- * @brief Creates a new video window on the given output.
- * @param[in] output A output object
- * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
- * @return A created window object
- * @since 2.0.0
- */
-tdm_hwc_window *
-tdm_output_hwc_create_video_window(tdm_output *output, tdm_error *error);
-
-/**
- * @brief Destroys the given window.
- * @param[in] output A output object
- * @param[in] window the pointer of the window to destroy
- * @return #TDM_ERROR_NONE if success. Otherwise, error value.
- * @since 2.0.0
- */
-tdm_error
-tdm_output_hwc_destroy_window(tdm_output *output, tdm_hwc_window *hwc_window);
-
-/**
- * @brief Set the client(relative to the TDM) target buffer
- * @details Sets the buffer which will receive the output of client composition.
- * Window marked as TDM_COMPOSITION_CLIENT or TDM_COMPOSITION_DEVICE_CANDIDATE
- * will be composited into this buffer prior to the call to tdm_output_commit(),
- * and windows not marked as TDM_COMPOSITION_CLIENT and
- * TDM_COMPOSITION_DEVICE_CANDIDATE should be composited with this buffer by the
- * device.
- *
- * The buffer handle provided may be null if no windows are being composited by
- * the client. This must not result in an error (unless an invalid display
- * handle is also provided).
- *
- * The damage parameter describes a buffer damage region as defined in the
- * description of tdm_hwc_window_set_buffer_damage().
- *
- * List of composited hwc_windows (hwc_windows which buffers are presented on #target_buffer)
- * should be passed along with #target_buffer to allow tdm to make the smooth transition
- * from a DEVICE type to a CLIENT type.
- *
- * Should be called before tdm_output_commit() if any of the layers are marked as
- * TDM_COMPOSITION_CLIENT or TDM_COMPOSITION_DEVICE_CANDIDATE. If no layers are
- * so marked, then it is not necessary to call this function. It is not necessary
- * to call tdm_output_hwc_validate() after changing the target through this function.
- * @param[in] output A output object
- * @param[in] target_buffer The new target buffer
- * @param[in] damage The buffer damage region
- * @param[in] composited_wnds The array of composited hwc_wnds
- * @param[in] num_wnds The size of #composited_wnds array
- * @return #TDM_ERROR_NONE if success. Otherwise, error value.
- * @since 2.0.0
- */
-tdm_error
-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
- * presenting the output. Permitted changes are described in the definition
- * of tdm_hwc_window_composition_t above.
- * @param[in] output A output object
- * @param[out] num_types The number of composition type changes required by
- * the device; if greater than 0, the client must either set and validate new
- * types, or call tdm_output_hwc_accept_changes() to accept the changes returned by
- * tdm_output_hwc_get_changed_composition_types(); must be the same as the number of
- * changes returned by tdm_output_hwc_get_changed_composition_types (see the
- * declaration of that function for more information); pointer will be non-NULL
- * @return #TDM_ERROR_NONE if success. Otherwise, error value.
- * @since 2.0.0
- */
-tdm_error
-tdm_output_hwc_validate(tdm_output *output, tdm_hwc_window **composited_wnds, uint32_t num_wnds,
- uint32_t *num_types);
-
-/**
- * @brief Set the 'need to validate' handler for the 'output'
- *
- * @details During backend's work it may need to ask for the revalidation
- * (make client (E20) do tdm_output_hwc_validate() again), so a 'hndl' will
- * be called as such need happen. Only one handler per output is supported.
- *
- * @param[in] output The output object a hndl is going to be registered for.
- * @param[in] hndl The handler which will be called on the 'need to validate' event.
- *
- * @return #TDM_ERROR_NONE if success. Otherwise, error value.
- * @since 2.0.0
- */
-tdm_error
-tdm_output_hwc_set_need_validate_handler(tdm_output *output,
- tdm_output_need_validate_handler hndl);
-
-/**
- * @brief Get changed composition types
- * @details Retrieves the windows for which the device requires a different
- * composition type than had been set prior to the last call to tdm_output_hwc_validate().
- * The client will either update its state with these types and call
- * tdm_output_hwc_accept_changes, or will set new types and attempt to validate the
- * display again.
- * windows and types may be NULL to retrieve the number of elements which
- * will be returned. The number of elements returned must be the same as the
- * value returned in num_types from the last call to tdm_output_hwc_validate().
- * @param[in] output A output object
- * @param[out] num_elements If windows or types were NULL, the number of layers
- * and types which would have been returned; if both were non-NULL, the
- * number of elements returned in layers and types, which must not exceed
- * the value stored in num_elements prior to the call; pointer will be
- * non-NULL
- * @param[in] output A output object
- * @param[out] windows An array of windows
- * @param[out] composition_types An array of composition types, each corresponding
- * to an element of windows
- * @return #TDM_ERROR_NONE if success. Otherwise, error value.
- * @since 2.0.0
- */
-tdm_error
-tdm_output_hwc_get_changed_composition_types(tdm_output *output,uint32_t *num_elements,
- tdm_hwc_window **hwc_window,
- tdm_hwc_window_composition *composition_types);
-
-/**
- * @brief Accepts the changes required by the device
- * @details Accepts the changes required by the device from the previous
- * tdm_output_hwc_validate() call (which may be queried using
- * tdm_output_get_chaged_composition_types()) and revalidates the display. This
- * function is equivalent to requesting the changed types from
- * tdm_output_get_chaged_composition_types(), setting those types on the
- * corresponding windows, and then calling tdm_output_hwc_validate again.
- * After this call it must be valid to present this display. Calling this after
- * tdm_output_hwc_validate() returns 0 changes must succeed with TDM_ERROR_NONE, but
- * should have no other effect.
- * @param[in] output A output object
- * @return #TDM_ERROR_NONE if success. Otherwise, error value.
- * @since 2.0.0
- */
-tdm_error
-tdm_output_hwc_accept_changes(tdm_output *output);
-
-/**
- * @brief Get a target buffer queue
- * @details Buffers from target buffer queue will receive the output of
- * client composition. Window marked as TDM_COMPOSITION_CLIENT or
- * TDM_COMPOSITION_DEVICE_CANDIDATE will be composited into this buffers
- * prior to the call to tdm_output_commit().