1 /**************************************************************************
5 * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
7 * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
8 * JinYoung Jeon <jy0.jeon@samsung.com>,
9 * Taeheon Kim <th908.kim@samsung.com>,
10 * YoungJun Cho <yj44.cho@samsung.com>,
11 * SooChan Lim <sc1.lim@samsung.com>,
12 * Boram Park <boram1288.park@samsung.com>
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36 #ifndef _TDM_BACKEND_H_
37 #define _TDM_BACKEND_H_
39 #include <tbm_surface.h>
40 #include <tbm_surface_queue.h>
42 #include "tdm_types.h"
50 * @brief The backend header file of TDM to implement a TDM backend module.
53 * #include <tdm_backend.h>
58 * @brief The backend module data
60 * The init() function of #tdm_backend_module returns the backend module data.
61 * And it will be passed to display functions of #tdm_func_display.
62 * @see tdm_backend_module, tdm_backend_module
64 typedef void tdm_backend_data;
67 * @brief The output status handler
68 * @details This handler will be called when the status of a output object is
71 typedef void (*tdm_output_status_handler)(tdm_output *output,
72 tdm_output_conn_status status,
76 * @brief The output dpms handler
77 * @details This handler will be called when the dpms of a output object is
80 typedef void (*tdm_output_dpms_handler)(tdm_output *output,
85 * @brief The display capabilities structure of a backend module
86 * @see The display_get_capability() function of #tdm_func_display
88 typedef struct _tdm_caps_display {
89 int max_layer_count; /**< The maximum layer count */
93 * @brief The capabilities structure of a output object
94 * @see The output_get_capability() function of #tdm_func_output
96 typedef struct _tdm_caps_output {
97 char maker[TDM_NAME_LEN]; /**< The output maker */
98 char model[TDM_NAME_LEN]; /**< The output model */
99 char name[TDM_NAME_LEN]; /**< The output name */
101 tdm_output_conn_status status; /**< The connection status */
102 tdm_output_type type; /**< The connection type */
103 unsigned int type_id; /**< The connection type id */
105 unsigned int mode_count; /**< The count of available modes */
106 tdm_output_mode *modes; /**< The @b newly-allocated array of modes. will be freed in frontend. */
108 unsigned int prop_count; /**< The count of available properties */
109 tdm_prop *props; /**< The @b newly-allocated array of properties. will be freed in frontend. */
111 unsigned int mmWidth; /**< The physical width (milimeter) */
112 unsigned int mmHeight; /**< The physical height (milimeter) */
113 unsigned int subpixel; /**< The subpixel */
115 int min_w; /**< The minimun width */
116 int min_h; /**< The minimun height */
117 int max_w; /**< The maximum width */
118 int max_h; /**< The maximum height */
119 int preferred_align; /**< The prefered align */
121 tdm_output_capability capabilities; /**< The capabilities of output. @since 1.4.1 */
123 int cursor_min_w; /**< The minimun width. @since 1.5.0 */
124 int cursor_min_h; /**< The minimun height. @since 1.5.0 */
125 int cursor_max_w; /**< The maximum width. @since 1.5.0 */
126 int cursor_max_h; /**< The maximum height. @since 1.5.0 */
127 int cursor_preferred_align; /**< The prefered align. @since 1.5.0 */
131 * @brief The capabilities structure of a layer object
132 * @see The layer_get_capability() function of #tdm_func_layer
134 typedef struct _tdm_caps_layer {
135 tdm_layer_capability capabilities; /**< The capabilities of layer */
139 * GRAPHIC layers are non-changeable. The zpos of GRAPHIC layers starts
140 * from 0. If there are 4 GRAPHIC layers, The zpos SHOULD be 0, 1, 2, 3.\n
141 * But the zpos of VIDEO layer is changeable by layer_set_video_pos() function
142 * of #tdm_func_layer. And The zpos of VIDEO layers is less than GRAPHIC
143 * layers or more than GRAPHIC layers.
144 * ie, ..., -2, -1, 4, 5, ... (if 0 <= GRAPHIC layer's zpos < 4).
145 * The zpos of VIDEO layers is @b relative. It doesn't need to start
146 * from -1 or 4. Let's suppose that there are two VIDEO layers.
147 * One has -2 zpos. Another has -4 zpos. Then -2 Video layer is higher
148 * than -4 VIDEO layer.
152 unsigned int format_count; /**< The count of available formats */
154 *formats; /**< The @b newly-allocated array of formats. will be freed in frontend. */
156 unsigned int prop_count; /**< The count of available properties */
157 tdm_prop *props; /**< The @b newly-allocated array of properties. will be freed in frontend. */
161 * @brief The capabilities structure of a pp object
162 * @see The display_get_pp_capability() function of #tdm_func_display
164 typedef struct _tdm_caps_pp {
165 tdm_pp_capability capabilities; /**< The capabilities of pp */
167 unsigned int format_count; /**< The count of available formats */
169 *formats; /**< The @b newly-allocated array. will be freed in frontend. */
171 int min_w; /**< The minimun width */
172 int min_h; /**< The minimun height */
173 int max_w; /**< The maximum width */
174 int max_h; /**< The maximum height */
175 int preferred_align; /**< The prefered align */
177 /**< The attach count which a PP object can handle. @since 1.2.0 */
178 int max_attach_count;
182 * @brief The capabilities structure of a capture object
183 * @see The display_get_capture_capability() function of #tdm_func_display
185 typedef struct _tdm_caps_capture {
186 tdm_capture_capability capabilities; /**< The capabilities of capture */
188 unsigned int format_count; /**< The count of available formats */
190 *formats; /**< The @b newly-allocated array of formats. will be freed in frontend. */
192 int min_w; /**< The minimun width */
193 int min_h; /**< The minimun height */
194 int max_w; /**< The maximum width */
195 int max_h; /**< The maximum height */
196 int preferred_align; /**< The prefered align */
198 /**< The attach count which a capture object can handle. @since 1.2.0 */
199 int max_attach_count;
203 * @brief The display functions for a backend module.
205 typedef struct _tdm_func_display {
207 * @brief Get the display capabilities of a backend module
208 * @param[in] bdata The backend module data
209 * @param[out] caps The display capabilities of a backend module
210 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
212 * A backend module @b SHOULD implement this function. TDM calls this function
213 * not only at the initial time, but also at the update time when new output
215 * If a hardware has the restriction of the number of max usable layer count,
216 * a backend module can set the max count to max_layer_count of #tdm_caps_display
219 tdm_error (*display_get_capability)(tdm_backend_data *bdata, tdm_caps_display *caps);
222 * @brief Get the pp capabilities of a backend module
223 * @param[in] bdata The backend module data
224 * @param[out] caps The pp capabilities of a backend module
225 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
226 * @see tdm_backend_register_func_pp
228 * TDM calls this function not only at the initial time, but also at the update
229 * time when new output is connected.\n
230 * A backend module doesn't need to implement this function if a hardware
231 * doesn't have the memory-to-memory converting device. Otherwise, a backend module
232 * @b SHOULD fill the #tdm_caps_pp data. #tdm_caps_pp contains the hardware
233 * restriction information which a converting device can handle. ie, format, size, etc.
235 tdm_error (*display_get_pp_capability)(tdm_backend_data *bdata, tdm_caps_pp *caps);
238 * @brief Get the capture capabilities of a backend module
239 * @param[in] bdata The backend module data
240 * @param[out] caps The capture capabilities of a backend module
241 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
242 * @see tdm_backend_register_func_capture
244 * TDM calls this function not only at the initial time, but also at the update
245 * time when new output is connected.\n
246 * A backend module doesn't need to implement this function if a hardware
247 * doesn't have the capture device. Otherwise, a backend module @b SHOULD fill the
248 * #tdm_caps_capture data. #tdm_caps_capture contains the hardware restriction
249 * information which a capture device can handle. ie, format, size, etc.
251 tdm_error (*display_get_capture_capability)(tdm_backend_data *bdata, tdm_caps_capture *caps);
254 * @brief Get a output array of a backend module
255 * @param[in] bdata The backend module data
256 * @param[out] count The count of outputs
257 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
258 * @return A output array which is @b newly-allocated
259 * @see tdm_backend_register_func_capture
261 * A backend module @b SHOULD implement this function. TDM calls this function
262 * not only at the initial time, but also at the update time when new output
264 * A backend module @b SHOULD return the @b newly-allocated array which contains
265 * "tdm_output*" data. It will be freed in frontend.
269 * drm_display_get_outputs(tdm_backend_data *bdata, int *count, tdm_error *error)
271 * tdm_drm_data *drm_data = bdata;
272 * tdm_drm_output_data *output_data = NULL;
273 * tdm_output **outputs;
277 * LIST_FOR_EACH_ENTRY(output_data, &drm_data->output_list, link)
282 * if (error) *error = TDM_ERROR_NONE;
286 * // will be freed in frontend
287 * outputs = calloc(*count, sizeof(tdm_drm_output_data*));
291 * if (error) *error = TDM_ERROR_OUT_OF_MEMORY;
296 * LIST_FOR_EACH_ENTRY(output_data, &drm_data->output_list, link)
297 * outputs[i++] = output_data;
299 * if (error) *error = TDM_ERROR_NONE;
305 tdm_output **(*display_get_outputs)(tdm_backend_data *bdata, int *count,
309 * @brief Get the file descriptor of a backend module
310 * @param[in] bdata The backend module data
311 * @param[out] fd The fd of a backend module
312 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
313 * @see display_handle_events() function of #tdm_func_display
315 * A backend module can return epoll's fd which is watching the backend device one more fds.
317 tdm_error (*display_get_fd)(tdm_backend_data *bdata, int *fd);
320 * @brief Handle the events which happens on the fd of a backend module
321 * @param[in] bdata The backend module data
322 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
324 tdm_error (*display_handle_events)(tdm_backend_data *bdata);
327 * @brief Create a pp object of a backend module
328 * @param[in] bdata The backend module data
329 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
330 * @return A pp object
331 * @see pp_destroy() function of #tdm_func_pp
333 * A backend module doesn't need to implement this function if a hardware
334 * doesn't have the memory-to-memory converting device.
336 tdm_pp *(*display_create_pp)(tdm_backend_data *bdata, tdm_error *error);
338 void (*reserved1)(void);
339 void (*reserved2)(void);
340 void (*reserved3)(void);
341 void (*reserved4)(void);
342 void (*reserved5)(void);
343 void (*reserved6)(void);
344 void (*reserved7)(void);
345 void (*reserved8)(void);
349 * @brief The output functions for a backend module.
351 typedef struct _tdm_func_output {
353 * @brief Get the capabilities of a output object
354 * @param[in] output A output object
355 * @param[out] caps The capabilities of a output object
356 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
358 * A backend module @b SHOULD implement this function. TDM calls this function
359 * not only at the initial time, but also at the update time when new output
361 * #tdm_caps_output contains connection status, modes, avaiable properties,
362 * size restriction information, etc.
364 tdm_error (*output_get_capability)(tdm_output *output, tdm_caps_output *caps);
367 * @brief Get a layer array of a output object
368 * @param[in] output A output object
369 * @param[out] count The count of layers
370 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
371 * @return A layer array which is @b newly-allocated
373 * A backend module @b SHOULD implement this function. TDM calls this function
374 * not only at the initial time, but also at the update time when new output
376 * A backend module @b SHOULD return the @b newly-allocated array which contains
377 * "tdm_layer*" data. It will be freed in frontend.
379 tdm_layer **(*output_get_layers)(tdm_output *output, int *count,
383 * @brief Set the property which has a given id
384 * @param[in] output A output object
385 * @param[in] id The property id
386 * @param[in] value The value
387 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
389 tdm_error (*output_set_property)(tdm_output *output, unsigned int id,
393 * @brief Get the property which has a given id
394 * @param[in] output A output object
395 * @param[in] id The property id
396 * @param[out] value The value
397 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
399 tdm_error (*output_get_property)(tdm_output *output, unsigned int id,
403 * @brief Wait for VBLANK
404 * @param[in] output A output object
405 * @param[in] interval vblank interval
406 * @param[in] sync 0: asynchronous, 1:synchronous
407 * @param[in] user_data The user data
408 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
409 * @see output_set_vblank_handler, tdm_output_vblank_handler
411 * If this function returns TDM_ERROR_NONE, a backend module @b SHOULD call
412 * a user vblank handler with the user data of this function after interval
415 tdm_error (*output_wait_vblank)(tdm_output *output, int interval, int sync,
419 * @brief Set a user vblank handler
420 * @param[in] output A output object
421 * @param[in] func A user vblank handler
422 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
424 tdm_error (*output_set_vblank_handler)(tdm_output *output,
425 tdm_output_vblank_handler func);
428 * @brief Commit changes for a output object
429 * @param[in] output A output object
430 * @param[in] sync 0: asynchronous, 1:synchronous
431 * @param[in] user_data The user data
432 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
433 * @see output_set_commit_handler, tdm_output_commit_handler
435 * When this function is called, a backend module @b SHOULD apply the all
436 * changes of the given output object to screen as well as the layer changes
438 * If this function returns TDM_ERROR_NONE, a backend module @b SHOULD call
439 * a user commit handler with the user data of this function after all
440 * changes of the given output object are applied.
442 tdm_error (*output_commit)(tdm_output *output, int sync, void *user_data);
445 * @brief Set a user commit handler
446 * @param[in] output A output object
447 * @param[in] func A user commit handler
448 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
450 tdm_error (*output_set_commit_handler)(tdm_output *output,
451 tdm_output_commit_handler func);
454 * @brief Set DPMS of a output object synchronously
455 * @param[in] output A output object
456 * @param[in] dpms_value DPMS value
457 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
459 tdm_error (*output_set_dpms)(tdm_output *output, tdm_output_dpms dpms_value);
462 * @brief Get DPMS of a output object
463 * @param[in] output A output object
464 * @param[out] dpms_value DPMS value
465 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
467 tdm_error (*output_get_dpms)(tdm_output *output, tdm_output_dpms *dpms_value);
470 * @brief Set one of available modes of a output object
471 * @param[in] output A output object
472 * @param[in] mode A output mode
473 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
475 tdm_error (*output_set_mode)(tdm_output *output, const tdm_output_mode *mode);
478 * @brief Get the mode of a output object
479 * @param[in] output A output object
480 * @param[out] mode A output mode
481 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
483 tdm_error (*output_get_mode)(tdm_output *output, const tdm_output_mode **mode);
486 * @brief Create a capture object of a output object
487 * @param[in] output A output object
488 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
489 * @return A capture object
490 * @see capture_destroy() function of #tdm_func_capture
492 * A backend module doesn't need to implement this function if a hardware
493 * doesn't have the capture device.
495 tdm_capture *(*output_create_capture)(tdm_output *output, tdm_error *error);
498 * @brief Set a output connection status handler
499 * @details A backend module need to call the output status handler when the
500 * output connection status has been changed to let the TDM frontend know
502 * @param[in] output A output object
503 * @param[in] func A output status handler
504 * @param[in] user_data The user data
505 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
508 tdm_error (*output_set_status_handler)(tdm_output *output,
509 tdm_output_status_handler func,
513 * @brief Set a output dpms handler
514 * @details This function can be NULL if an output doesn't support asynchronous
515 * DPMS control. Otherwise, a backend module needs to call the output dpms handler
516 * to let the TDM frontend know the output DPMS change indeed.
517 * @param[in] output A output object
518 * @param[in] func A output dpms handler
519 * @param[in] user_data The user data
520 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
521 * @see #output_set_dpms_async, #TDM_OUTPUT_CAPABILITY_ASYNC_DPMS
524 tdm_error (*output_set_dpms_handler)(tdm_output *output,
525 tdm_output_dpms_handler func,
529 * @brief Set DPMS of a output object asynchronously
530 * @param[in] output A output object
531 * @details This function can be NULL if an output doesn't support asynchronous
532 * DPMS control. Otherwise, an output should have #TDM_OUTPUT_CAPABILITY_ASYNC_DPMS
533 * flags which #output_get_capability returns. And if a output dpms handler is added with
534 * #output_set_dpms_handler, a backend module needs to call the output dpms handler
535 * to let the TDM frontend know the output DPMS change indeed.
536 * @param[in] dpms_value DPMS value
537 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
538 * @see #output_set_dpms_handler, #TDM_OUTPUT_CAPABILITY_ASYNC_DPMS
541 tdm_error (*output_set_dpms_async)(tdm_output *output, tdm_output_dpms dpms_value);
544 * @brief Get a hwc object of a output object
545 * @param[in] output A output object
546 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
547 * @return A hwc object
549 tdm_hwc *(*output_get_hwc)(tdm_output *output, tdm_error *error);
551 void (*reserved5)(void);
552 void (*reserved6)(void);
553 void (*reserved7)(void);
554 void (*reserved8)(void);
558 * @brief The layer functions for a backend module.
560 typedef struct _tdm_func_layer {
562 * @brief Get the capabilities of a layer object
563 * @param[in] layer A layer object
564 * @param[out] caps The capabilities of a layer object
565 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
567 * A backend module @b SHOULD implement this function. TDM calls this function
568 * not only at the initial time, but also at the update time when new output
570 * #tdm_caps_layer contains avaiable formats/properties, zpos information, etc.
572 tdm_error (*layer_get_capability)(tdm_layer *layer, tdm_caps_layer *caps);
575 * @brief Set the property which has a given id.
576 * @param[in] layer A layer object
577 * @param[in] id The property id
578 * @param[in] value The value
579 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
581 tdm_error (*layer_set_property)(tdm_layer *layer, unsigned int id,
585 * @brief Get the property which has a given id.
586 * @param[in] layer A layer object
587 * @param[in] id The property id
588 * @param[out] value The value
589 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
591 tdm_error (*layer_get_property)(tdm_layer *layer, unsigned int id,
595 * @brief Set the geometry information to a layer object
596 * @param[in] layer A layer object
597 * @param[in] info The geometry information
598 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
599 * @see output_commit() function of #tdm_func_output
601 * A backend module would apply the geometry information when the output object
602 * of a layer object is committed.
604 tdm_error (*layer_set_info)(tdm_layer *layer, tdm_info_layer *info);
607 * @brief Get the geometry information to a layer object
608 * @param[in] layer A layer object
609 * @param[out] info The geometry information
610 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
612 tdm_error (*layer_get_info)(tdm_layer *layer, tdm_info_layer *info);
615 * @brief Set a TDM buffer to a layer object
616 * @param[in] layer A layer object
617 * @param[in] buffer A TDM buffer
618 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
619 * @see output_commit() function of #tdm_func_output
621 * A backend module would show a TDM buffer on screen when the output object
622 * of a layer object is committed.
624 tdm_error (*layer_set_buffer)(tdm_layer *layer, tbm_surface_h buffer);
627 * @brief Unset a TDM buffer from a layer object
628 * @param[in] layer A layer object
629 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
631 * A backend module @b SHOULD remove the current showing buffer from screen.
633 tdm_error (*layer_unset_buffer)(tdm_layer *layer);
636 * @brief Set the zpos for a VIDEO layer object
637 * @param[in] layer A layer object
638 * @param[in] zpos z-order
639 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
640 * @see tdm_caps_layer, tdm_layer_capability
642 * A backend module doesn't need to implement this function if a backend
643 * module doesn't have VIDEO layers.\n
644 * This function is for VIDEO layers.
645 * GRAPHIC layers are non-changeable. The zpos of GRAPHIC layers starts
646 * from 0. If there are 4 GRAPHIC layers, The zpos SHOULD be 0, 1, 2, 3.\n
647 * But the zpos of VIDEO layer is changeable. And The zpos of VIDEO layers
648 * is less than GRAPHIC layers or more than GRAPHIC layers.
649 * ie, ..., -2, -1, 4, 5, ... (if 0 <= GRAPHIC layer's zpos < 4).
650 * The zpos of VIDEO layers is @b relative. It doesn't need to start
651 * from -1 or 4. Let's suppose that there are two VIDEO layers.
652 * One has -2 zpos. Another has -4 zpos. Then -2 Video layer is higher
653 * than -4 VIDEO layer.
655 tdm_error (*layer_set_video_pos)(tdm_layer *layer, int zpos);
658 * @brief Create a capture object of a layer object
659 * @param[in] output A output object
660 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
661 * @return A capture object
662 * @see capture_destroy() function of #tdm_func_capture
664 * A backend module doesn't need to implement this function if a hardware
665 * doesn't have the capture device.
667 tdm_capture *(*layer_create_capture)(tdm_layer *layer, tdm_error *error);
670 * @brief Get buffer flags which the layer can support.
671 * @param[in] layer A layer object
672 * @param[out] flags The buffer flags which should be the tbm_bo flags
673 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
675 tdm_error (*layer_get_buffer_flags)(tdm_layer *layer, unsigned int *flags);
677 void (*reserved1)(void);
678 void (*reserved2)(void);
679 void (*reserved3)(void);
680 void (*reserved4)(void);
681 void (*reserved5)(void);
682 void (*reserved6)(void);
683 void (*reserved7)(void);
686 typedef struct _tdm_func_hwc {
688 * @brief Create a new window on the given hwc.
689 * @param[in] hwc A hwc object
690 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
691 * @return A created window object
694 tdm_hwc_window *(*hwc_create_window)(tdm_hwc *hwc, tdm_error *error);
697 * @brief Get video the supported format array for the hwc windows of a hwc object.
698 * @param[in] hwc A hwc object
699 * @param[out] formats The available format array
700 * @param[out] count The count of formats
701 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
703 tdm_error (*hwc_get_video_supported_formats)(tdm_hwc *hwc, const tbm_format **formats,
706 * @brief Get the hwc video capability
707 * @param[in] hwc A hwc object
708 * @param[out] video_capability A hwc hwc video capability
709 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
711 tdm_error (*hwc_get_video_capability)(tdm_hwc *hwc,
712 tdm_hwc_video_capability *video_capability);
715 * @brief Get the available property array of a hwc object.
716 * @param[in] hwc A hwc object
717 * @param[out] props The available property array
718 * @param[out] count The count of properties
719 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
721 tdm_error (*hwc_get_available_properties)(tdm_hwc *hwc, const tdm_prop **props,
725 * @brief Get a target buffer queue
726 * @param[in] hwc A hwc object
727 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
728 * @return A buffer queue
731 tbm_surface_queue_h (*hwc_get_client_target_buffer_queue)(tdm_hwc *hwc,
735 * @brief Set the client(relative to the TDM) target buffer
736 * @details Sets the buffer which will receive the hwc of client composition.
737 * Window marked as TDM_COMPOSITION_CLIENT or TDM_COMPOSITION_DEVICE_CANDIDATE
738 * will be composited into this buffer prior to the call to hwc_commit(),
739 * and windows not marked as TDM_COMPOSITION_CLIENT and
740 * TDM_COMPOSITION_DEVICE_CANDIDATE should be composited with this buffer by the
743 * The buffer handle provided may be null if no windows are being composited by
744 * the client. This must not result in an error (unless an invalid display
745 * handle is also provided).
747 * The damage parameter describes a buffer damage region as defined in the
748 * description of hwc_window_set_buffer_damage().
750 * Will be called before hwc_commit() if any of the layers are marked as
751 * TDM_COMPOSITION_CLIENT or TDM_COMPOSITION_DEVICE_CANDIDATE. If no layers are
752 * so marked, then it is not necessary to call this function. It is not necessary
753 * to call hwc_validate() after changing the target through this function.
754 * @param[in] hwc A hwc object
755 * @param[in] target The new target buffer
756 * @param[in] damage The buffer damage region
757 * @param[in] composited_wnds The array of composited hwc_wnds
758 * @param[in] num_wnds The size of #composited_wnds array
759 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
762 tdm_error (*hwc_set_client_target_buffer)(tdm_hwc *hwc,
763 tbm_surface_h target_buffer,
767 * @brief Validate the hwc
768 * @details Instructs the device to inspect all of the layer state and
769 * determine if there are any composition type changes necessary before
770 * presenting the hwc. Permitted changes are described in the definition
771 * of tdm_composition_t above.
772 * @param[in] hwc A hwc object
773 * @param[out] num_types The number of composition type changes required by
774 * the device; if greater than 0, the client must either set and validate new
775 * types, or call hwc_accept_changes() to accept the changes returned by
776 * hwc_get_changed_composition_types(); must be the same as the number of
777 * changes returned by hwc_get_changed_composition_types (see the
778 * declaration of that function for more information); pointer will be non-NULL
779 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
782 tdm_error (*hwc_validate)(tdm_hwc *hwc, tdm_hwc_window **composited_wnds,
783 uint32_t num_wnds, uint32_t *num_types);
786 * @brief Get changed composition types
787 * @details Retrieves the windows for which the device requires a different
788 * composition type than had been set prior to the last call to hwc_validate().
789 * The client will either update its state with these types and call
790 * hwc_accept_changes, or will set new types and attempt to validate the
792 * layers and types may be NULL to retrieve the number of elements which
793 * will be returned. The number of elements returned must be the same as the
794 * value returned in num_types from the last call to hwc_validate().
795 * @param[in] hwc A hwc object
796 * @param[out] num_elements If windows or types were NULL, the number of layers
797 * and types which would have been returned; if both were non-NULL, the
798 * number of elements returned in layers and types, which must not exceed
799 * the value stored in num_elements prior to the call; pointer will be
801 * @param[out] windows An array of windows
802 * @param[out] composition_types An array of composition types, each
803 * corresponding to an element of windows
804 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
807 tdm_error (*hwc_get_changed_composition_types)(tdm_hwc *hwc, uint32_t *num_elements,
808 tdm_hwc_window **hwc_window,
809 tdm_hwc_window_composition *composition_types);
811 * @brief Accepts the changes required by the device
812 * @details Accepts the changes required by the device from the previous
813 * hwc_validate() call (which may be queried using
814 * hwc_get_chaged_composition_types()) and revalidates the display. This
815 * function is equivalent to requesting the changed types from
816 * hwc_get_chaged_composition_types(), setting those types on the
817 * corresponding windows, and then calling hwc_validate again.
818 * After this call it must be valid to present this display. Calling this after
819 * hwc_validate() returns 0 changes must succeed with TDM_ERROR_NONE, but
820 * should have no other effect.
821 * @param[in] hwc A hwc object
822 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
825 tdm_error (*hwc_accept_changes)(tdm_hwc *hwc);
828 * @brief Commit changes for a output object
829 * @param[in] hwc A hwc object
830 * @param[in] sync 0: asynchronous, 1:synchronous
831 * @param[in] user_data The user data
832 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
833 * @see hwc_set_commit_handler, tdm_hwc_commit_handler
835 * When this function is called, a backend module @b SHOULD apply the all
836 * changes of the given output object to screen as well as the layer changes
838 * If this function returns TDM_ERROR_NONE, a backend module @b SHOULD call
839 * a user commit handler with the user data of this function after all
840 * changes of the given output object are applied.
842 tdm_error (*hwc_commit)(tdm_hwc *hwc, int sync, void *user_data);
845 * @brief Set a user commit handler
846 * @param[in] hwc A hwc object
847 * @param[in] func A user commit handler
848 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
850 tdm_error (*hwc_set_commit_handler)(tdm_output *hwc, tdm_hwc_commit_handler func);
854 * @brief The window functions for a backend module.
857 typedef struct _tdm_func_hwc_window {
859 * @brief Destroys the given window.
860 * @param[in] window the pointer of the window to destroy
863 void (*hwc_window_destroy)(tdm_hwc_window *hwc_window);
866 * @brief Get a buffer queue for the window object
867 * @param[in] hwc_window A window object
868 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
869 * @return A buffer queue
871 tbm_surface_queue_h (*hwc_window_get_buffer_queue)(tdm_hwc_window *hwc_window,
875 * @brief Sets the desired composition type of the given window.
876 * @details During hwc_validate(), the device may request changes to
877 * the composition types of any of the layers as described in the definition
878 * of tdm_hwc_window_composition_t above.
879 * @param[in] hwc_window A window object
880 * @param[in] composition_type The new composition type
881 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
883 tdm_error (*hwc_window_set_composition_type)(tdm_hwc_window *hwc_window,
884 tdm_hwc_window_composition composition_type);
887 * @brief Set the buffer damage
888 * @details Provides the region of the source buffer which has been modified
889 * since the last frame. This region does not need to be validated before
890 * calling hwc_commit().
891 * Once set through this function, the damage region remains the same until a
892 * subsequent call to this function.
893 * If damage.num_rects > 0, then it may be assumed that any portion of the source
894 * buffer not covered by one of the rects has not been modified this frame. If
895 * damage.num_rects == 0, then the whole source buffer must be treated as if it
897 * If the layer's contents are not modified relative to the prior frame, damage
898 * will contain exactly one empty rect([0, 0, 0, 0]).
899 * The damage rects are relative to the pre-transformed buffer, and their origin
900 * is the top-left corner. They will not exceed the dimensions of the latched
902 * @param[in] hwc_window A window object
903 * @param[in] damage The new buffer damage region
904 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
906 tdm_error (*hwc_window_set_buffer_damage)(tdm_hwc_window *hwc_window,
910 * @brief Set the information to a window object
911 * @details The information will be applied when the hwc object
912 * of a layer object is committed.
913 * @param[in] hwc_window A window object
914 * @param[in] info The geometry information
915 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
917 tdm_error (*hwc_window_set_info)(tdm_hwc_window *hwc_window,
918 tdm_hwc_window_info *info);
921 * @brief Get the geometry information to a layer object
922 * @param[in] layer A layer object
923 * @param[out] info The geometry information
924 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
926 tdm_error (*hwc_window_get_info)(tdm_hwc_window *hwc_window,
927 tdm_hwc_window_info *info);
930 * @brief Set a TDM buffer to a window object
931 * @details A TDM buffer will be applied when the hwc object
932 * of a layer object is committed.
933 * @param[in] hwc_window A window object
934 * @param[in] buffer A TDM buffer
935 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
937 * Implementation should return #TDM_ERROR_BUSY if #hwc_window can't
938 * be updated right now, this won't be interpreted like some critical
941 tdm_error (*hwc_window_set_buffer)(tdm_hwc_window *hwc_window,
942 tbm_surface_h buffer);
945 * @brief Set the property which has a given id.
946 * @param[in] hwc window A hwc window object
947 * @param[in] id The property id
948 * @param[in] value The value
949 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
951 tdm_error (*hwc_window_set_property)(tdm_hwc_window *hwc_window,
952 uint32_t id, tdm_value value);
955 * @brief Get the property which has a given id.
956 * @param[in] hwc window A hwc window object
957 * @param[in] id The property id
958 * @param[out] value The value
959 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
961 tdm_error (*hwc_window_get_property)(tdm_hwc_window *hwc_window,
962 uint32_t id, tdm_value *value);
963 } tdm_func_hwc_window;
966 * @brief The pp functions for a backend module.
968 typedef struct _tdm_func_pp {
970 * @brief Destroy a pp object
971 * @param[in] pp A pp object
972 * @see display_create_pp() function of #tdm_func_display
974 void (*pp_destroy)(tdm_pp *pp);
977 * @brief Set the geometry information to a pp object
978 * @param[in] pp A pp object
979 * @param[in] info The geometry information
980 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
981 * @see pp_commit() function of #tdm_func_pp
983 * A backend module would apply the geometry information when committed.
985 tdm_error (*pp_set_info)(tdm_pp *pp, tdm_info_pp *info);
988 * @brief Attach a source buffer and a destination buffer to a pp object
989 * @param[in] pp A pp object
990 * @param[in] src A source buffer
991 * @param[in] dst A destination buffer
992 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
993 * @see pp_set_info() function of #tdm_func_pp
994 * @see pp_commit() function of #tdm_func_pp
995 * @see pp_set_done_handler, tdm_pp_done_handler
997 * A backend module converts the image of a source buffer to a destination
998 * buffer when committed. The size/crop/transform information is set via
999 * #pp_set_info() of #tdm_func_pp. When done, a backend module @b SHOULD
1000 * return the source/destination buffer via tdm_pp_done_handler.
1002 tdm_error (*pp_attach)(tdm_pp *pp, tbm_surface_h src, tbm_surface_h dst);
1005 * @brief Commit changes for a pp object
1006 * @param[in] pp A pp object
1007 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1009 tdm_error (*pp_commit)(tdm_pp *pp);
1012 * @brief Set a user done handler to a pp object
1013 * @param[in] pp A pp object
1014 * @param[in] func A user done handler
1015 * @param[in] user_data user data
1016 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1018 * A backend module @b SHOULD call #tdm_pp_done_handler when converintg a image is done.
1020 tdm_error (*pp_set_done_handler)(tdm_pp *pp, tdm_pp_done_handler func,
1023 void (*reserved1)(void);
1024 void (*reserved2)(void);
1025 void (*reserved3)(void);
1026 void (*reserved4)(void);
1027 void (*reserved5)(void);
1028 void (*reserved6)(void);
1029 void (*reserved7)(void);
1030 void (*reserved8)(void);
1034 * @brief The capture functions for a backend module.
1036 typedef struct _tdm_func_capture {
1038 * @brief Destroy a capture object
1039 * @param[in] capture A capture object
1040 * @see output_create_capture() function of #tdm_func_output
1041 * @see layer_create_capture() function of #tdm_func_layer
1043 void (*capture_destroy)(tdm_capture *capture);
1046 * @brief Set the geometry information to a capture object
1047 * @param[in] capture A capture object
1048 * @param[in] info The geometry information
1049 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1050 * @see capture_commit() function of #tdm_func_capture
1052 * A backend module would apply the geometry information when committed.
1054 tdm_error (*capture_set_info)(tdm_capture *capture, tdm_info_capture *info);
1057 * @brief Attach a TDM buffer to a capture object
1058 * @details When capture_commit() function is called, a backend module starts
1059 * to dump a output or a layer to a TDM buffer.
1060 * @param[in] capture A capture object
1061 * @param[in] buffer A TDM buffer
1062 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1063 * @see capture_set_info() function of #tdm_func_capture
1064 * @see capture_commit() function of #tdm_func_capture
1065 * @see capture_set_done_handler, tdm_capture_done_handler
1067 * A backend module starts to dump a output or a layer to to a TDM buffer when
1068 * committed. The size/crop/transform information is set via #capture_set_info()
1069 * of #tdm_func_capture. When done, a backend module @b SHOULD return the TDM
1070 * buffer via tdm_capture_done_handler.
1072 tdm_error (*capture_attach)(tdm_capture *capture, tbm_surface_h buffer);
1075 * @brief Commit changes for a capture object
1076 * @param[in] capture A capture object
1077 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1079 tdm_error (*capture_commit)(tdm_capture *capture);
1082 * @brief Set a user done handler to a capture object
1083 * @param[in] capture A capture object
1084 * @param[in] func A user done handler
1085 * @param[in] user_data user data
1086 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1088 * A backend module @b SHOULD call #tdm_capture_done_handler when capture operation is done.
1090 tdm_error (*capture_set_done_handler)(tdm_capture *capture,
1091 tdm_capture_done_handler func, void *user_data);
1093 void (*reserved1)(void);
1094 void (*reserved2)(void);
1095 void (*reserved3)(void);
1096 void (*reserved4)(void);
1097 void (*reserved5)(void);
1098 void (*reserved6)(void);
1099 void (*reserved7)(void);
1100 void (*reserved8)(void);
1104 * @brief The tdm event source
1106 typedef void tdm_event_loop_source;
1109 * @brief The fd source handler
1111 typedef tdm_error (*tdm_event_loop_fd_handler)(int fd, tdm_event_loop_mask mask, void *user_data);
1114 * @brief The timer source handler
1116 typedef tdm_error (*tdm_event_loop_timer_handler)(void *user_data);
1118 #define TDM_BACKEND_MINOR_VERSION_MASK 0x0000FFFF
1119 #define TDM_BACKEND_MAJOR_VERSION_MASK 0xFFFF0000
1120 #define TDM_BACKEND_GET_ABI_MINOR(v) ((v) & TDM_BACKEND_MINOR_VERSION_MASK)
1121 #define TDM_BACKEND_GET_ABI_MAJOR(v) (((v) & TDM_BACKEND_MAJOR_VERSION_MASK) >> 16)
1125 * The ABI version of TDM backend module. It has a major and minor revision.
1126 * Modules using lower minor revisions will work with TDM frontend of a higher
1127 * minor revision. There is no compatibility between different major revisions.
1128 * The minor revision mask is 0x0000FFFF and the major revision mask is 0xFFFF0000.
1131 * tdm_backend_module tdm_backend_module_data = {
1134 * TDM_BACKEND_SET_ABI_VERSION(1,1),
1140 #define TDM_BACKEND_SET_ABI_VERSION(major, minor) \
1141 (((major) << 16) & TDM_BACKEND_MAJOR_VERSION_MASK) | \
1142 ((minor) & TDM_BACKEND_MINOR_VERSION_MASK)
1145 #define TDM_BACKEND_ABI_VERSION_1_0 TDM_BACKEND_SET_ABI_VERSION(1, 0)
1146 #define TDM_BACKEND_ABI_VERSION_2_0 TDM_BACKEND_SET_ABI_VERSION(2, 0)
1147 #define TDM_BACKEND_ABI_LATEST_VERSION TDM_BACKEND_ABI_VERSION_2_0 /**< the latest version of the tdm backend abi */
1151 * This MACRO is deprecated since 1.2.0. Use TDM_BACKEND_SET_ABI_VERSION instead of this.
1153 * Use #TDM_BACKEND_SET_ABI_VERSION macro instead of this macro.
1155 #define TDM_BACKEND_ABI_VERSION TDM_BACKEND_SET_ABI_VERSION(1, 1)
1158 * @brief The backend module information of the entry point to initialize a TDM
1161 * A backend module @b SHOULD define the global data symbol of which name is
1162 * @b "tdm_backend_module_data". TDM will read this symbol, @b "tdm_backend_module_data",
1163 * at the initial time and call init() function of #tdm_backend_module.
1165 typedef struct _tdm_backend_module {
1166 const char *name; /**< The module name of a backend module */
1167 const char *vendor; /**< The vendor name of a backend module */
1168 unsigned long abi_version; /**< The ABI version of a backend module */
1171 * @brief The init function of a backend module
1172 * @param[in] dpy A display object
1173 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1174 * @return The backend module data
1175 * @see tdm_backend_data
1177 tdm_backend_data *(*init)(tdm_display *dpy, tdm_error *error);
1180 * @brief The deinit function of a backend module
1181 * @param[in] bdata The backend module data
1183 void (*deinit)(tdm_backend_data *bdata);
1184 } tdm_backend_module;
1187 * @brief Register the backend display functions to a display
1188 * @param[in] dpy A display object
1189 * @param[in] func_display display functions
1190 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1191 * @see tdm_backend_register_func_output, tdm_backend_register_func_layer
1193 * A backend module @b SHOULD set the backend display functions at least.
1196 tdm_backend_register_func_display(tdm_display *dpy,
1197 tdm_func_display *func_display);
1200 * @brief Register the backend output functions to a display
1201 * @param[in] dpy A display object
1202 * @param[in] func_output output functions
1203 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1204 * @see tdm_backend_register_func_display, tdm_backend_register_func_layer
1206 * A backend module @b SHOULD set the backend output functions at least.
1209 tdm_backend_register_func_output(tdm_display *dpy,
1210 tdm_func_output *func_output);
1213 * @brief Register the backend layer functions to a display
1214 * @param[in] dpy A display object
1215 * @param[in] func_layer layer functions
1216 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1217 * @see tdm_backend_register_func_display, tdm_backend_register_func_output
1219 * A backend module @b SHOULD set the backend layer functions at least.
1222 tdm_backend_register_func_layer(tdm_display *dpy, tdm_func_layer *func_layer);
1225 * @brief Register the backend hwc functions to a display
1226 * @param[in] dpy A display object
1227 * @param[in] func_hwc hwc functions
1228 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1229 * @see tdm_backend_register_func_display, tdm_backend_register_func_output
1231 * A backend module @b SHOULD set the backend hwc functions at least.
1235 tdm_backend_register_func_hwc(tdm_display *dpy, tdm_func_hwc *func_hwc);
1238 * @brief Register the backend hwc_window functions to a display
1239 * @param[in] dpy A display object
1240 * @param[in] func_hwc_window hwc_window functions
1241 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1242 * @see tdm_backend_register_func_display, tdm_backend_register_func_output
1244 * A backend module @b SHOULD set the backend hwc_window functions at least.
1248 tdm_backend_register_func_hwc_window(tdm_display *dpy, tdm_func_hwc_window *func_hwc_window);
1251 * @brief Register the backend pp functions to a display
1252 * @param[in] dpy A display object
1253 * @param[in] func_pp pp functions
1254 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1255 * @see tdm_backend_register_func_display, tdm_backend_register_func_capture
1257 * A backend module doesn'tcan skip to register the backend pp functions
1258 * if a hardware doesn't have the memory-to-memory converting device.
1261 tdm_backend_register_func_pp(tdm_display *dpy, tdm_func_pp *func_pp);
1264 * @brief Register the backend capture functions to a display
1265 * @param[in] dpy A display object
1266 * @param[in] func_capture capture functions
1267 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1268 * @see tdm_backend_register_func_display, tdm_backend_register_func_pp
1270 * A backend module can skip to register the backend capture functions
1271 * if a hardware doesn't have the capture device.
1274 tdm_backend_register_func_capture(tdm_display *dpy,
1275 tdm_func_capture *func_capture);
1278 * @brief Increase the ref_count of a TDM buffer
1280 * TDM has its own buffer release mechanism to let an frontend user know when a TDM buffer
1281 * becomes available for a next job. A TDM buffer can be used for TDM to show
1282 * it on screen or to capture an output and a layer. After all operations,
1283 * TDM will release it immediately when TDM doesn't need it any more.
1284 * @param[in] buffer A TDM buffer
1285 * @return A buffer itself. Otherwise, NULL.
1286 * @see tdm_buffer_unref_backend
1288 * - This function @b SHOULD be paired with #tdm_buffer_unref_backend. \n
1289 * - For example, this function @b SHOULD be called in case that a backend module uses the TDM
1290 * buffer of a layer for capturing a output or a layer to avoid tearing issue.
1293 tdm_buffer_ref_backend(tbm_surface_h buffer);
1296 * @brief Decrease the ref_count of a TDM buffer
1297 * @param[in] buffer A TDM buffer
1298 * @see tdm_buffer_ref_backend
1301 tdm_buffer_unref_backend(tbm_surface_h buffer);
1304 * @brief The destroy handler of a TDM buffer
1305 * @param[in] buffer A TDM buffer
1306 * @param[in] user_data user data
1307 * @see tdm_buffer_add_destroy_handler, tdm_buffer_remove_destroy_handler
1309 typedef void (*tdm_buffer_destroy_handler)(tbm_surface_h buffer,
1313 * @brief Add a destroy handler to a TDM buffer
1314 * @param[in] buffer A TDM buffer
1315 * @param[in] func A destroy handler
1316 * @param[in] user_data user data
1317 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1318 * @see tdm_buffer_remove_destroy_handler
1320 * A backend module can add a TDM buffer destroy handler to a TDM buffer which
1321 * is a #tbm_surface_h object. When the TDM buffer is destroyed, this handler will
1325 tdm_buffer_add_destroy_handler(tbm_surface_h buffer,
1326 tdm_buffer_destroy_handler func, void *user_data);
1329 * @brief Remove a destroy handler from a TDM buffer
1330 * @param[in] buffer A TDM buffer
1331 * @param[in] func A destroy handler
1332 * @param[in] user_data user data
1333 * @see tdm_buffer_add_destroy_handler
1336 tdm_buffer_remove_destroy_handler(tbm_surface_h buffer,
1337 tdm_buffer_destroy_handler func, void *user_data);
1340 * @brief Add a FD handler for activity on the given file descriptor
1341 * @param[in] dpy A display object
1342 * @param[in] fd A file descriptor
1343 * @param[in] mask to monitor FD
1344 * @param[in] func A FD handler function
1345 * @param[in] user_data user data
1346 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1347 * @return A FD event source
1348 * @see #tdm_event_loop_source_fd_update, #tdm_event_loop_source_remove
1350 tdm_event_loop_source*
1351 tdm_event_loop_add_fd_handler(tdm_display *dpy, int fd, tdm_event_loop_mask mask,
1352 tdm_event_loop_fd_handler func, void *user_data,
1356 * @brief Update the mask of the given FD event source
1357 * @param[in] source The given FD event source
1358 * @param[in] mask to monitor FD
1359 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1362 tdm_event_loop_source_fd_update(tdm_event_loop_source *source, tdm_event_loop_mask mask);
1365 * @brief Add a timer handler
1366 * @param[in] dpy A display object
1367 * @param[in] func A timer handler function
1368 * @param[in] user_data user data
1369 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1370 * @return A timer event source
1371 * @see #tdm_event_loop_source_timer_update, #tdm_event_loop_source_remove
1373 tdm_event_loop_source*
1374 tdm_event_loop_add_timer_handler(tdm_display *dpy, tdm_event_loop_timer_handler func,
1375 void *user_data, tdm_error *error);
1378 * @brief Update the millisecond delay time of the given timer event source.
1379 * @param[in] source The given timer event source
1380 * @param[in] ms_delay The millisecond delay time. zero "0" disarms the timer.
1381 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1384 tdm_event_loop_source_timer_update(tdm_event_loop_source *source, unsigned int ms_delay);
1387 * @brief Remove the given event source
1388 * @param[in] source The given event source
1389 * @see #tdm_event_loop_add_fd_handler, #tdm_event_loop_add_timer_handler
1392 tdm_event_loop_source_remove(tdm_event_loop_source *source);
1395 * @brief Get the ini value with given key
1397 * @param[in] key The given key
1398 * @param[in] default_value The default value
1399 * @return the value of given key if success. Otherwise, default_value.
1400 * @see #tdm_config_get_string
1403 tdm_config_get_int(const char *key, int default_value);
1406 * @brief Get the ini value with given key
1408 * @param[in] key The given key
1409 * @param[in] default_value The default value
1410 * @return the value of given key if success. Otherwise, default_value.
1411 * @see #tdm_config_get_int
1414 tdm_config_get_string(const char *key, const char *default_value);
1420 #endif /* _TDM_BACKEND_H_ */