X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Ftdm_backend.h;h=970cbc40b2add4e799cab138e858b44aab41626d;hb=2adc0c96b4af5f88b3560e8ebd0b595a3f483578;hp=bf270e2cae3b8ed5986773ff25f98b8fd1087d71;hpb=733d6051c16439cac03928c3f8dd0a945a23471d;p=platform%2Fcore%2Fuifw%2Flibtdm.git diff --git a/include/tdm_backend.h b/include/tdm_backend.h index bf270e2..970cbc4 100644 --- a/include/tdm_backend.h +++ b/include/tdm_backend.h @@ -9,7 +9,7 @@ * Taeheon Kim , * YoungJun Cho , * SooChan Lim , - * Boram Park + * Boram Park * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the @@ -37,6 +37,7 @@ #define _TDM_BACKEND_H_ #include +#include #include "tdm_types.h" @@ -72,11 +73,20 @@ typedef void (*tdm_output_status_handler)(tdm_output *output, void *user_data); /** + * @brief The output dpms handler + * @details This handler will be called when the dpms of a output object is + * changed in runtime. + */ +typedef void (*tdm_output_dpms_handler)(tdm_output *output, + tdm_output_dpms dpms, + void *user_data); + +/** * @brief The display capabilities structure of a backend module * @see The display_get_capability() function of #tdm_func_display */ typedef struct _tdm_caps_display { - int max_layer_count; /**< The maximum layer count. -1 means "not defined" */ + int max_layer_count; /**< The maximum layer count */ } tdm_caps_display; /** @@ -93,8 +103,7 @@ typedef struct _tdm_caps_output { unsigned int type_id; /**< The connection type id */ unsigned int mode_count; /**< The count of available modes */ - tdm_output_mode - *modes; /**< The @b newly-allocated array of modes. will be freed in frontend. */ + tdm_output_mode *modes; /**< The @b newly-allocated array of modes. will be freed in frontend. */ unsigned int prop_count; /**< The count of available properties */ tdm_prop *props; /**< The @b newly-allocated array of properties. will be freed in frontend. */ @@ -103,11 +112,19 @@ typedef struct _tdm_caps_output { unsigned int mmHeight; /**< The physical height (milimeter) */ unsigned int subpixel; /**< The subpixel */ - int min_w; /**< The minimun width. -1 means "not defined" */ - int min_h; /**< The minimun height. -1 means "not defined" */ - int max_w; /**< The maximum width. -1 means "not defined" */ - int max_h; /**< The maximum height. -1 means "not defined" */ - int preferred_align; /**< The prefered align. -1 means "not defined" */ + int min_w; /**< The minimun width */ + int min_h; /**< The minimun height */ + int max_w; /**< The maximum width */ + int max_h; /**< The maximum height */ + int preferred_align; /**< The prefered align */ + + tdm_output_capability capabilities; /**< The capabilities of output. @since 1.4.1 */ + + int cursor_min_w; /**< The minimun width. @since 1.5.0 */ + int cursor_min_h; /**< The minimun height. @since 1.5.0 */ + int cursor_max_w; /**< The maximum width. @since 1.5.0 */ + int cursor_max_h; /**< The maximum height. @since 1.5.0 */ + int cursor_preferred_align; /**< The prefered align. @since 1.5.0 */ } tdm_caps_output; /** @@ -151,16 +168,13 @@ typedef struct _tdm_caps_pp { tbm_format *formats; /**< The @b newly-allocated array. will be freed in frontend. */ - int min_w; /**< The minimun width. -1 means "not defined" */ - int min_h; /**< The minimun height. -1 means "not defined" */ - int max_w; /**< The maximum width. -1 means "not defined" */ - int max_h; /**< The maximum height. -1 means "not defined" */ - int preferred_align; /**< The prefered align. -1 means "not defined" */ + int min_w; /**< The minimun width */ + int min_h; /**< The minimun height */ + int max_w; /**< The maximum width */ + int max_h; /**< The maximum height */ + int preferred_align; /**< The prefered align */ - /**< The attach count which a PP object can handle. - * -1 means "not defined". - * @since 1.2.0 - */ + /**< The attach count which a PP object can handle. @since 1.2.0 */ int max_attach_count; } tdm_caps_pp; @@ -175,16 +189,13 @@ typedef struct _tdm_caps_capture { tbm_format *formats; /**< The @b newly-allocated array of formats. will be freed in frontend. */ - int min_w; /**< The minimun width. -1 means "not defined" */ - int min_h; /**< The minimun height. -1 means "not defined" */ - int max_w; /**< The maximum width. -1 means "not defined" */ - int max_h; /**< The maximum height. -1 means "not defined" */ - int preferred_align; /**< The prefered align. -1 means "not defined" */ + int min_w; /**< The minimun width */ + int min_h; /**< The minimun height */ + int max_w; /**< The maximum width */ + int max_h; /**< The maximum height */ + int preferred_align; /**< The prefered align */ - /**< The attach count which a capture object can handle. - * -1 means "not defined". - * @since 1.2.0 - */ + /**< The attach count which a capture object can handle. @since 1.2.0 */ int max_attach_count; } tdm_caps_capture; @@ -203,7 +214,7 @@ typedef struct _tdm_func_display { * is connected.\n * If a hardware has the restriction of the number of max usable layer count, * a backend module can set the max count to max_layer_count of #tdm_caps_display - * structure. Otherwise, set -1. + * structure. */ tdm_error (*display_get_capability)(tdm_backend_data *bdata, tdm_caps_display *caps); @@ -324,8 +335,7 @@ typedef struct _tdm_func_display { */ tdm_pp *(*display_create_pp)(tdm_backend_data *bdata, tdm_error *error); - tdm_error (*display_get_capabilitiy)(tdm_backend_data *bdata, tdm_caps_display *caps); - + void (*reserved1)(void); void (*reserved2)(void); void (*reserved3)(void); void (*reserved4)(void); @@ -441,7 +451,7 @@ typedef struct _tdm_func_output { tdm_output_commit_handler func); /** - * @brief Set DPMS of a output object + * @brief Set DPMS of a output object synchronously * @param[in] output A output object * @param[in] dpms_value DPMS value * @return #TDM_ERROR_NONE if success. Otherwise, error value. @@ -499,10 +509,209 @@ typedef struct _tdm_func_output { tdm_output_status_handler func, void *user_data); - void (*reserved1)(void); - void (*reserved2)(void); - void (*reserved3)(void); - void (*reserved4)(void); + /** + * @brief Set a output dpms handler + * @details This function can be NULL if an output doesn't support asynchronous + * DPMS control. Otherwise, a backend module needs to call the output dpms handler + * to let the TDM frontend know the output DPMS change indeed. + * @param[in] output A output object + * @param[in] func A output dpms handler + * @param[in] user_data The user data + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + * @see #output_set_dpms_async, #TDM_OUTPUT_CAPABILITY_ASYNC_DPMS + * @since 1.4.0 + */ + tdm_error (*output_set_dpms_handler)(tdm_output *output, + tdm_output_dpms_handler func, + void *user_data); + + /** + * @brief Set DPMS of a output object asynchronously + * @param[in] output A output object + * @details This function can be NULL if an output doesn't support asynchronous + * DPMS control. Otherwise, an output should have #TDM_OUTPUT_CAPABILITY_ASYNC_DPMS + * flags which #output_get_capability returns. And if a output dpms handler is added with + * #output_set_dpms_handler, a backend module needs to call the output dpms handler + * to let the TDM frontend know the output DPMS change indeed. + * @param[in] dpms_value DPMS value + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + * @see #output_set_dpms_handler, #TDM_OUTPUT_CAPABILITY_ASYNC_DPMS + * @since 1.7.0 + */ + tdm_error (*output_set_dpms_async)(tdm_output *output, tdm_output_dpms dpms_value); + + /** + * @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 *(*output_hwc_create_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 (*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 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 hwc_window_set_buffer_damage(). + * + * List of composited hwc_windows (hwc_windows which buffers are presented on #target_buffer) + * will be passed along with #target_buffer to allow tdm to make the smooth transition + * from a DEVICE type to a CLIENT type. + * + * Will be called before 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 output_hwc_validate() after changing the target through this function. + * @param[in] output A output object + * @param[in] target 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 (*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 (*output_hwc_unset_client_target_buffer)(tdm_output *output); + + /** + * @brief Get the layer associated with the client target buffer + * @details TODO: + * @param[in] output A output object + * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value. + * @return A layer object. + * @since 2.0.0 + */ + tdm_layer *(*output_hwc_get_client_target_buffer_layer)(tdm_output *output, tdm_error *error); + + /** + * @brief Get the buffer which is set to the client target buffer + * @details TODO: + * @param[in] output A output object + * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value. + * @return A layer object. + * @since 2.0.0 + */ + tbm_surface_h (*output_hwc_get_client_target_buffer)(tdm_output *output, tdm_error *error); + + /** + * @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_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 output_hwc_accept_changes() to accept the changes returned by + * output_hwc_get_changed_composition_types(); must be the same as the number of + * changes returned by 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 (*output_hwc_validate)(tdm_output *output, tdm_hwc_window **composited_wnds, uint32_t num_wnds, + uint32_t *num_types); + + /** + * @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 output_hwc_validate(). + * The client will either update its state with these types and call + * output_hwc_accept_changes, or will set new types and attempt to validate the + * display again. + * layers 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 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[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 (*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 + * output_hwc_validate() call (which may be queried using + * output_get_chaged_composition_types()) and revalidates the display. This + * function is equivalent to requesting the changed types from + * output_get_chaged_composition_types(), setting those types on the + * corresponding windows, and then calling output_hwc_validate again. + * After this call it must be valid to present this display. Calling this after + * 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 (*output_hwc_accept_changes)(tdm_output *output); + + /** + * @brief Get a target buffer queue + * @param[in] output A output object + * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value. + * @return A buffer queue + * @since 2.0.0 + */ + tbm_surface_queue_h (*output_hwc_get_target_buffer_queue)(tdm_output *output, + tdm_error *error); + + /** + * @brief Get the supported format array for video hwc windows of a output object. + * @param[in] output A output object + * @param[out] formats The available format array + * @param[out] count The count of formats + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*output_hwc_get_video_supported_formats)(tdm_layer *layer, + const tbm_format **formats, int *count); + + /** + * @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. If the video abilities isn't accessed return NULL + * @since 2.0.0 + */ + tdm_hwc_window *(*output_hwc_create_video_window)(tdm_output *output, tdm_error *error); + void (*reserved5)(void); void (*reserved6)(void); void (*reserved7)(void); @@ -573,7 +782,7 @@ typedef struct _tdm_func_layer { * @return #TDM_ERROR_NONE if success. Otherwise, error value. * @see output_commit() function of #tdm_func_output * @remark - * A backend module would apply a TDM buffer when the output object + * A backend module would show a TDM buffer on screen when the output object * of a layer object is committed. */ tdm_error (*layer_set_buffer)(tdm_layer *layer, tbm_surface_h buffer); @@ -583,8 +792,7 @@ typedef struct _tdm_func_layer { * @param[in] layer A layer object * @return #TDM_ERROR_NONE if success. Otherwise, error value. * @remark - * A backend module @b SHOULD hide the current showing buffer from screen. - * If needed, cleanup a layer object resource. + * A backend module @b SHOULD remove the current showing buffer from screen. */ tdm_error (*layer_unset_buffer)(tdm_layer *layer); @@ -640,6 +848,191 @@ typedef struct _tdm_func_layer { } tdm_func_layer; /** + * @brief The window functions for a backend module. + * @since 2.0.0 + */ +typedef struct _tdm_func_window { + /** + * @brief Get a buffer queue for the window object + * @param[in] hwc_window A window object + * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value. + * @return A buffer queue + */ + tbm_surface_queue_h (*hwc_window_get_tbm_buffer_queue)(tdm_hwc_window *hwc_window, + tdm_error *error); + + /** + * @brief Sets the desired composition type of the given window. + * @details During output_hwc_validate(), the device may request changes to + * the composition types of any of the layers as described in the definition + * of tdm_hwc_window_composition_t above. + * @param[in] hwc_window A window object + * @param[in] composition_type The new composition type + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_set_composition_type)(tdm_hwc_window *hwc_window, + tdm_hwc_window_composition composition_type); + + /** + * @brief Set the buffer damage + * @details Provides the region of the source buffer which has been modified + * since the last frame. This region does not need to be validated before + * calling output_commit(). + * Once set through this function, the damage region remains the same until a + * subsequent call to this function. + * If damage.num_rects > 0, then it may be assumed that any portion of the source + * buffer not covered by one of the rects has not been modified this frame. If + * damage.num_rects == 0, then the whole source buffer must be treated as if it + * has been modified. + * If the layer's contents are not modified relative to the prior frame, damage + * will contain exactly one empty rect([0, 0, 0, 0]). + * The damage rects are relative to the pre-transformed buffer, and their origin + * is the top-left corner. They will not exceed the dimensions of the latched + * buffer. + * @param[in] hwc_window A window object + * @param[in] damage The new buffer damage region + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_set_buffer_damage)(tdm_hwc_window *hwc_window, + tdm_hwc_region damage); + + /** + * @brief Set the information to a window object + * @details The information will be applied when the output object + * of a layer object is committed. + * @param[in] hwc_window A window object + * @param[in] info The geometry information + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_set_info)(tdm_hwc_window *hwc_window, + tdm_hwc_window_info *info); + + /** + * @brief Get the geometry information to a layer object + * @param[in] layer A layer object + * @param[out] info The geometry information + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_get_info)(tdm_hwc_window *hwc_window, + tdm_hwc_window_info *info); + + /** + * @brief Set a TDM buffer to a window object + * @details A TDM buffer will be applied when the output object + * of a layer object is committed. + * @param[in] hwc_window A window object + * @param[in] buffer A TDM buffer + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + * + * Implementation should return #TDM_ERROR_BUSY if #hwc_window can't + * be updated right now, this won't be interpreted like some critical + * error. + */ + tdm_error (*hwc_window_set_buffer)(tdm_hwc_window *hwc_window, + tbm_surface_h buffer); + + /** + * @brief Unset a TDM buffer to a window object + * @details A TDM 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. + * + * Implementation should return #TDM_ERROR_BUSY if #hwc_window can't + * be updated right now, this won't be interpreted like some critical + * error. + */ + tdm_error (*hwc_window_unset_buffer)(tdm_hwc_window *hwc_window); + + /** + * @brief Get a buffer which is set to a window object + * @details A TDM buffer will be applied when the output object + * of a layer object is committed. + * @param[in] hwc_window A window object + * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value. + * @return A buffer which is @b assigend to a window object + * + * Implementation should return #TDM_ERROR_BUSY if #hwc_window can't + * be updated right now, this won't be interpreted like some critical + * error. + */ + tbm_surface_h (*hwc_window_get_buffer)(tdm_hwc_window *hwc_window, + tdm_error *error); + + /** + * @brief Get a layer associated with a window object + * @param[in] hwc_window A window object + * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value. + * @return A layer which is @b assigend to a window object + * @remark + * A backend module @b SHOULD implement this function. The backend should + * return the tdm_layer assoicated with a hwc_window which must be assigend + * hw overlay.\n + */ + tdm_layer *(*hwc_window_get_layer)(tdm_hwc_window *hwc_window, + tdm_error *error); + + /** + * @brief Set a flags to a window object + * @param[in] hwc_window A window object + * @param[in] flags A hwc_window flags + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_set_flags)(tdm_hwc_window *hwc_window, + tdm_hwc_window_flag flags); + + /** + * @brief Unset a flags from a window object + * @param[in] hwc_window A window object + * @param[in] flags A hwc_window flags + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_unset_flags)(tdm_hwc_window *hwc_window, + tdm_hwc_window_flag flags); + + /** + * @brief Get the window video capability + * @param[in] hwc_window A window object + * @param[out] video_capability A hwc window video capability + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_video_get_capability)(tdm_hwc_window *hwc_window, + tdm_hwc_window_video_capability *video_capability); + + /** + * @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 + * @param[out] count The count of properties + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_video_get_available_properties)( + tdm_hwc_window *hwc_window, + const tdm_prop **props, int *count); + + /** + * @brief Get the property which has a given id. + * @param[in] hwc window A video hwc window object + * @param[in] id The property id + * @param[out] value The value + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_video_get_property)(tdm_hwc_window *hwc_window, + uint32_t id, tdm_value *value); + + /** + * @brief Set the property which has a given id. + * @param[in] hwc window A video hwc window object + * @param[in] id The property id + * @param[in] value The value + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + */ + tdm_error (*hwc_window_video_set_property)(tdm_hwc_window *hwc_window, + uint32_t id, tdm_value value); + +} tdm_func_hwc_window; + +/** * @brief The pp functions for a backend module. */ typedef struct _tdm_func_pp { @@ -816,7 +1209,7 @@ typedef tdm_error (*tdm_event_loop_timer_handler)(void *user_data); */ #define TDM_BACKEND_SET_ABI_VERSION(major, minor) \ (((major) << 16) & TDM_BACKEND_MAJOR_VERSION_MASK) | \ - ((major) & TDM_BACKEND_MINOR_VERSION_MASK) + ((minor) & TDM_BACKEND_MINOR_VERSION_MASK) /** * @brief @@ -894,6 +1287,19 @@ tdm_error tdm_backend_register_func_layer(tdm_display *dpy, tdm_func_layer *func_layer); /** + * @brief Register the backend hwc_window functions to a display + * @param[in] dpy A display object + * @param[in] func_hwc_window hwc_window functions + * @return #TDM_ERROR_NONE if success. Otherwise, error value. + * @see tdm_backend_register_func_display, tdm_backend_register_func_output + * @remarks + * A backend module @b SHOULD set the backend hwc_window functions at least. + * @since 2.0.0 + */ +tdm_error +tdm_backend_register_func_hwc_window(tdm_display *dpy, tdm_func_hwc_window *func_hwc_window); + +/** * @brief Register the backend pp functions to a display * @param[in] dpy A display object * @param[in] func_pp pp functions @@ -1037,6 +1443,39 @@ tdm_event_loop_source_timer_update(tdm_event_loop_source *source, unsigned int m void tdm_event_loop_source_remove(tdm_event_loop_source *source); +/** + * @brief Get the ini value with given key + * @details + * @param[in] key The given key + * @param[in] default_value The default value + * @return the value of given key if success. Otherwise, default_value. + * @see #tdm_config_get_string + */ +int +tdm_config_get_int(const char *key, int default_value); + +/** + * @brief Get the ini value with given key + * @details + * @param[in] key The given key + * @param[in] default_value The default value + * @return the value of given key if success. Otherwise, default_value. + * @see #tdm_config_get_int + */ +const char * +tdm_config_get_string(const char *key, const char *default_value); + + +/** + * @brief Trigger a 'need to validate' event. + * @param[in] output The output the event should be triggered for. + * @note The global display lock has to be locked before the call to this function. + * @see #tdm_output_hwc_set_need_validate_handler + * @since 2.0.0 + */ +tdm_error +tdm_backend_trigger_need_validate_event(tdm_output *output); + #ifdef __cplusplus } #endif