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 <sc1.lim@samsung.com>
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34 **************************************************************************/
36 #ifndef _TDM_BACKEND_H_
37 #define _TDM_BACKEND_H_
39 #include <tbm_surface.h>
41 #include "tdm_types.h"
49 * @brief The backend header file of TDM to implement a TDM backend module.
52 * #include <tdm_backend.h>
57 * @brief The backend module data
59 * The init() function of #tdm_backend_module returns the backend module data.
60 * And it will be passed to display functions of #tdm_func_display.
61 * @see tdm_backend_module, tdm_backend_module
63 typedef void tdm_backend_data;
66 * @brief The output status handler
67 * @details This handler will be called when the status of a output object is
70 typedef void (*tdm_output_status_handler)(tdm_output *output,
71 tdm_output_conn_status status,
75 * @brief The display capabilities structure of a backend module
76 * @see The display_get_capability() function of #tdm_func_display
78 typedef struct _tdm_caps_display {
79 int max_layer_count; /**< The maximum layer count. -1 means "not defined" */
83 * @brief The capabilities structure of a output object
84 * @see The output_get_capability() function of #tdm_func_output
86 typedef struct _tdm_caps_output {
87 char maker[TDM_NAME_LEN]; /**< The output maker */
88 char model[TDM_NAME_LEN]; /**< The output model */
89 char name[TDM_NAME_LEN]; /**< The output name */
91 tdm_output_conn_status status; /**< The connection status */
92 tdm_output_type type; /**< The connection type */
93 unsigned int type_id; /**< The connection type id */
95 unsigned int mode_count; /**< The count of available modes */
97 *modes; /**< The @b newly-allocated array of modes. will be freed in frontend. */
99 unsigned int prop_count; /**< The count of available properties */
100 tdm_prop *props; /**< The @b newly-allocated array of properties. will be freed in frontend. */
102 unsigned int mmWidth; /**< The physical width (milimeter) */
103 unsigned int mmHeight; /**< The physical height (milimeter) */
104 unsigned int subpixel; /**< The subpixel */
106 int min_w; /**< The minimun width. -1 means "not defined" */
107 int min_h; /**< The minimun height. -1 means "not defined" */
108 int max_w; /**< The maximum width. -1 means "not defined" */
109 int max_h; /**< The maximum height. -1 means "not defined" */
110 int preferred_align; /**< The prefered align. -1 means "not defined" */
114 * @brief The capabilities structure of a layer object
115 * @see The layer_get_capability() function of #tdm_func_layer
117 typedef struct _tdm_caps_layer {
118 tdm_layer_capability capabilities; /**< The capabilities of layer */
122 * GRAPHIC layers are non-changeable. The zpos of GRAPHIC layers starts
123 * from 0. If there are 4 GRAPHIC layers, The zpos SHOULD be 0, 1, 2, 3.\n
124 * But the zpos of VIDEO layer is changeable by layer_set_video_pos() function
125 * of #tdm_func_layer. And The zpos of VIDEO layers is less than GRAPHIC
126 * layers or more than GRAPHIC layers.
127 * ie, ..., -2, -1, 4, 5, ... (if 0 <= GRAPHIC layer's zpos < 4).
128 * The zpos of VIDEO layers is @b relative. It doesn't need to start
129 * from -1 or 4. Let's suppose that there are two VIDEO layers.
130 * One has -2 zpos. Another has -4 zpos. Then -2 Video layer is higher
131 * than -4 VIDEO layer.
135 unsigned int format_count; /**< The count of available formats */
137 *formats; /**< The @b newly-allocated array of formats. will be freed in frontend. */
139 unsigned int prop_count; /**< The count of available properties */
140 tdm_prop *props; /**< The @b newly-allocated array of properties. will be freed in frontend. */
144 * @brief The capabilities structure of a pp object
145 * @see The display_get_pp_capability() function of #tdm_func_display
147 typedef struct _tdm_caps_pp {
148 tdm_pp_capability capabilities; /**< The capabilities of pp */
150 unsigned int format_count; /**< The count of available formats */
152 *formats; /**< The @b newly-allocated array. will be freed in frontend. */
154 int min_w; /**< The minimun width. -1 means "not defined" */
155 int min_h; /**< The minimun height. -1 means "not defined" */
156 int max_w; /**< The maximum width. -1 means "not defined" */
157 int max_h; /**< The maximum height. -1 means "not defined" */
158 int preferred_align; /**< The prefered align. -1 means "not defined" */
160 /**< The attach count which a PP object can handle.
161 * -1 means "not defined".
164 int max_attach_count;
168 * @brief The capabilities structure of a capture object
169 * @see The display_get_capture_capability() function of #tdm_func_display
171 typedef struct _tdm_caps_capture {
172 tdm_capture_capability capabilities; /**< The capabilities of capture */
174 unsigned int format_count; /**< The count of available formats */
176 *formats; /**< The @b newly-allocated array of formats. will be freed in frontend. */
178 int min_w; /**< The minimun width. -1 means "not defined" */
179 int min_h; /**< The minimun height. -1 means "not defined" */
180 int max_w; /**< The maximum width. -1 means "not defined" */
181 int max_h; /**< The maximum height. -1 means "not defined" */
182 int preferred_align; /**< The prefered align. -1 means "not defined" */
184 /**< The attach count which a capture object can handle.
185 * -1 means "not defined".
188 int max_attach_count;
192 * @brief The display functions for a backend module.
194 typedef struct _tdm_func_display {
196 * @brief Get the display capabilities of a backend module
197 * @param[in] bdata The backend module data
198 * @param[out] caps The display capabilities of a backend module
199 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
201 * A backend module @b SHOULD implement this function. TDM calls this function
202 * not only at the initial time, but also at the update time when new output
204 * If a hardware has the restriction of the number of max usable layer count,
205 * a backend module can set the max count to max_layer_count of #tdm_caps_display
206 * structure. Otherwise, set -1.
208 tdm_error (*display_get_capability)(tdm_backend_data *bdata, tdm_caps_display *caps);
211 * @brief Get the pp capabilities of a backend module
212 * @param[in] bdata The backend module data
213 * @param[out] caps The pp capabilities of a backend module
214 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
215 * @see tdm_backend_register_func_pp
217 * TDM calls this function not only at the initial time, but also at the update
218 * time when new output is connected.\n
219 * A backend module doesn't need to implement this function if a hardware
220 * doesn't have the memory-to-memory converting device. Otherwise, a backend module
221 * @b SHOULD fill the #tdm_caps_pp data. #tdm_caps_pp contains the hardware
222 * restriction information which a converting device can handle. ie, format, size, etc.
224 tdm_error (*display_get_pp_capability)(tdm_backend_data *bdata, tdm_caps_pp *caps);
227 * @brief Get the capture capabilities of a backend module
228 * @param[in] bdata The backend module data
229 * @param[out] caps The capture capabilities of a backend module
230 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
231 * @see tdm_backend_register_func_capture
233 * TDM calls this function not only at the initial time, but also at the update
234 * time when new output is connected.\n
235 * A backend module doesn't need to implement this function if a hardware
236 * doesn't have the capture device. Otherwise, a backend module @b SHOULD fill the
237 * #tdm_caps_capture data. #tdm_caps_capture contains the hardware restriction
238 * information which a capture device can handle. ie, format, size, etc.
240 tdm_error (*display_get_capture_capability)(tdm_backend_data *bdata, tdm_caps_capture *caps);
243 * @brief Get a output array of a backend module
244 * @param[in] bdata The backend module data
245 * @param[out] count The count of outputs
246 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
247 * @return A output array which is @b newly-allocated
248 * @see tdm_backend_register_func_capture
250 * A backend module @b SHOULD implement this function. TDM calls this function
251 * not only at the initial time, but also at the update time when new output
253 * A backend module @b SHOULD return the @b newly-allocated array which contains
254 * "tdm_output*" data. It will be freed in frontend.
258 * drm_display_get_outputs(tdm_backend_data *bdata, int *count, tdm_error *error)
260 * tdm_drm_data *drm_data = bdata;
261 * tdm_drm_output_data *output_data = NULL;
262 * tdm_output **outputs;
266 * LIST_FOR_EACH_ENTRY(output_data, &drm_data->output_list, link)
271 * if (error) *error = TDM_ERROR_NONE;
275 * // will be freed in frontend
276 * outputs = calloc(*count, sizeof(tdm_drm_output_data*));
280 * if (error) *error = TDM_ERROR_OUT_OF_MEMORY;
285 * LIST_FOR_EACH_ENTRY(output_data, &drm_data->output_list, link)
286 * outputs[i++] = output_data;
288 * if (error) *error = TDM_ERROR_NONE;
294 tdm_output **(*display_get_outputs)(tdm_backend_data *bdata, int *count,
298 * @brief Get the file descriptor of a backend module
299 * @param[in] bdata The backend module data
300 * @param[out] fd The fd of a backend module
301 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
302 * @see display_handle_events() function of #tdm_func_display
304 * A backend module can return epoll's fd which is watching the backend device one more fds.
306 tdm_error (*display_get_fd)(tdm_backend_data *bdata, int *fd);
309 * @brief Handle the events which happens on the fd of a backend module
310 * @param[in] bdata The backend module data
311 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
313 tdm_error (*display_handle_events)(tdm_backend_data *bdata);
316 * @brief Create a pp object of a backend module
317 * @param[in] bdata The backend module data
318 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
319 * @return A pp object
320 * @see pp_destroy() function of #tdm_func_pp
322 * A backend module doesn't need to implement this function if a hardware
323 * doesn't have the memory-to-memory converting device.
325 tdm_pp *(*display_create_pp)(tdm_backend_data *bdata, tdm_error *error);
327 tdm_error (*display_get_capabilitiy)(tdm_backend_data *bdata, tdm_caps_display *caps);
329 void (*reserved2)(void);
330 void (*reserved3)(void);
331 void (*reserved4)(void);
332 void (*reserved5)(void);
333 void (*reserved6)(void);
334 void (*reserved7)(void);
335 void (*reserved8)(void);
339 * @brief The output functions for a backend module.
341 typedef struct _tdm_func_output {
343 * @brief Get the capabilities of a output object
344 * @param[in] output A output object
345 * @param[out] caps The capabilities of a output object
346 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
348 * A backend module @b SHOULD implement this function. TDM calls this function
349 * not only at the initial time, but also at the update time when new output
351 * #tdm_caps_output contains connection status, modes, avaiable properties,
352 * size restriction information, etc.
354 tdm_error (*output_get_capability)(tdm_output *output, tdm_caps_output *caps);
357 * @brief Get a layer array of a output object
358 * @param[in] output A output object
359 * @param[out] count The count of layers
360 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
361 * @return A layer array which is @b newly-allocated
363 * A backend module @b SHOULD implement this function. TDM calls this function
364 * not only at the initial time, but also at the update time when new output
366 * A backend module @b SHOULD return the @b newly-allocated array which contains
367 * "tdm_layer*" data. It will be freed in frontend.
369 tdm_layer **(*output_get_layers)(tdm_output *output, int *count,
373 * @brief Set the property which has a given id
374 * @param[in] output A output object
375 * @param[in] id The property id
376 * @param[in] value The value
377 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
379 tdm_error (*output_set_property)(tdm_output *output, unsigned int id,
383 * @brief Get the property which has a given id
384 * @param[in] output A output object
385 * @param[in] id The property id
386 * @param[out] value The value
387 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
389 tdm_error (*output_get_property)(tdm_output *output, unsigned int id,
393 * @brief Wait for VBLANK
394 * @param[in] output A output object
395 * @param[in] interval vblank interval
396 * @param[in] sync 0: asynchronous, 1:synchronous
397 * @param[in] user_data The user data
398 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
399 * @see output_set_vblank_handler, tdm_output_vblank_handler
401 * If this function returns TDM_ERROR_NONE, a backend module @b SHOULD call
402 * a user vblank handler with the user data of this function after interval
405 tdm_error (*output_wait_vblank)(tdm_output *output, int interval, int sync,
409 * @brief Set a user vblank handler
410 * @param[in] output A output object
411 * @param[in] func A user vblank handler
412 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
414 tdm_error (*output_set_vblank_handler)(tdm_output *output,
415 tdm_output_vblank_handler func);
418 * @brief Commit changes for a output object
419 * @param[in] output A output object
420 * @param[in] sync 0: asynchronous, 1:synchronous
421 * @param[in] user_data The user data
422 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
423 * @see output_set_commit_handler, tdm_output_commit_handler
425 * When this function is called, a backend module @b SHOULD apply the all
426 * changes of the given output object to screen as well as the layer changes
428 * If this function returns TDM_ERROR_NONE, a backend module @b SHOULD call
429 * a user commit handler with the user data of this function after all
430 * changes of the given output object are applied.
432 tdm_error (*output_commit)(tdm_output *output, int sync, void *user_data);
435 * @brief Set a user commit handler
436 * @param[in] output A output object
437 * @param[in] func A user commit handler
438 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
440 tdm_error (*output_set_commit_handler)(tdm_output *output,
441 tdm_output_commit_handler func);
444 * @brief Set DPMS of a output object
445 * @param[in] output A output object
446 * @param[in] dpms_value DPMS value
447 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
449 tdm_error (*output_set_dpms)(tdm_output *output, tdm_output_dpms dpms_value);
452 * @brief Get DPMS of a output object
453 * @param[in] output A output object
454 * @param[out] dpms_value DPMS value
455 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
457 tdm_error (*output_get_dpms)(tdm_output *output, tdm_output_dpms *dpms_value);
460 * @brief Set one of available modes of a output object
461 * @param[in] output A output object
462 * @param[in] mode A output mode
463 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
465 tdm_error (*output_set_mode)(tdm_output *output, const tdm_output_mode *mode);
468 * @brief Get the mode of a output object
469 * @param[in] output A output object
470 * @param[out] mode A output mode
471 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
473 tdm_error (*output_get_mode)(tdm_output *output, const tdm_output_mode **mode);
476 * @brief Create a capture object of a output object
477 * @param[in] output A output object
478 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
479 * @return A capture object
480 * @see capture_destroy() function of #tdm_func_capture
482 * A backend module doesn't need to implement this function if a hardware
483 * doesn't have the capture device.
485 tdm_capture *(*output_create_capture)(tdm_output *output, tdm_error *error);
488 * @brief Set a output connection status handler
489 * @details A backend module need to call the output status handler when the
490 * output connection status has been changed to let the TDM frontend know
492 * @param[in] output A output object
493 * @param[in] func A output status handler
494 * @param[in] user_data The user data
495 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
498 tdm_error (*output_set_status_handler)(tdm_output *output,
499 tdm_output_status_handler func,
502 void (*reserved1)(void);
503 void (*reserved2)(void);
504 void (*reserved3)(void);
505 void (*reserved4)(void);
506 void (*reserved5)(void);
507 void (*reserved6)(void);
508 void (*reserved7)(void);
509 void (*reserved8)(void);
513 * @brief The layer functions for a backend module.
515 typedef struct _tdm_func_layer {
517 * @brief Get the capabilities of a layer object
518 * @param[in] layer A layer object
519 * @param[out] caps The capabilities of a layer object
520 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
522 * A backend module @b SHOULD implement this function. TDM calls this function
523 * not only at the initial time, but also at the update time when new output
525 * #tdm_caps_layer contains avaiable formats/properties, zpos information, etc.
527 tdm_error (*layer_get_capability)(tdm_layer *layer, tdm_caps_layer *caps);
530 * @brief Set the property which has a given id.
531 * @param[in] layer A layer object
532 * @param[in] id The property id
533 * @param[in] value The value
534 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
536 tdm_error (*layer_set_property)(tdm_layer *layer, unsigned int id,
540 * @brief Get the property which has a given id.
541 * @param[in] layer A layer object
542 * @param[in] id The property id
543 * @param[out] value The value
544 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
546 tdm_error (*layer_get_property)(tdm_layer *layer, unsigned int id,
550 * @brief Set the geometry information to a layer object
551 * @param[in] layer A layer object
552 * @param[in] info The geometry information
553 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
554 * @see output_commit() function of #tdm_func_output
556 * A backend module would apply the geometry information when the output object
557 * of a layer object is committed.
559 tdm_error (*layer_set_info)(tdm_layer *layer, tdm_info_layer *info);
562 * @brief Get the geometry information to a layer object
563 * @param[in] layer A layer object
564 * @param[out] info The geometry information
565 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
567 tdm_error (*layer_get_info)(tdm_layer *layer, tdm_info_layer *info);
570 * @brief Set a TDM buffer to a layer object
571 * @param[in] layer A layer object
572 * @param[in] buffer A TDM buffer
573 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
574 * @see output_commit() function of #tdm_func_output
576 * A backend module would apply a TDM buffer when the output object
577 * of a layer object is committed.
579 tdm_error (*layer_set_buffer)(tdm_layer *layer, tbm_surface_h buffer);
582 * @brief Unset a TDM buffer from a layer object
583 * @param[in] layer A layer object
584 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
586 * A backend module @b SHOULD hide the current showing buffer from screen.
587 * If needed, cleanup a layer object resource.
589 tdm_error (*layer_unset_buffer)(tdm_layer *layer);
592 * @brief Set the zpos for a VIDEO layer object
593 * @param[in] layer A layer object
594 * @param[in] zpos z-order
595 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
596 * @see tdm_caps_layer, tdm_layer_capability
598 * A backend module doesn't need to implement this function if a backend
599 * module doesn't have VIDEO layers.\n
600 * This function is for VIDEO layers.
601 * GRAPHIC layers are non-changeable. The zpos of GRAPHIC layers starts
602 * from 0. If there are 4 GRAPHIC layers, The zpos SHOULD be 0, 1, 2, 3.\n
603 * But the zpos of VIDEO layer is changeable. And The zpos of VIDEO layers
604 * is less than GRAPHIC layers or more than GRAPHIC layers.
605 * ie, ..., -2, -1, 4, 5, ... (if 0 <= GRAPHIC layer's zpos < 4).
606 * The zpos of VIDEO layers is @b relative. It doesn't need to start
607 * from -1 or 4. Let's suppose that there are two VIDEO layers.
608 * One has -2 zpos. Another has -4 zpos. Then -2 Video layer is higher
609 * than -4 VIDEO layer.
611 tdm_error (*layer_set_video_pos)(tdm_layer *layer, int zpos);
614 * @brief Create a capture object of a layer object
615 * @param[in] output A output object
616 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
617 * @return A capture object
618 * @see capture_destroy() function of #tdm_func_capture
620 * A backend module doesn't need to implement this function if a hardware
621 * doesn't have the capture device.
623 tdm_capture *(*layer_create_capture)(tdm_layer *layer, tdm_error *error);
626 * @brief Get buffer flags which the layer can support.
627 * @param[in] layer A layer object
628 * @param[out] flags The buffer flags which should be the tbm_bo flags
629 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
631 tdm_error (*layer_get_buffer_flags)(tdm_layer *layer, unsigned int *flags);
633 void (*reserved1)(void);
634 void (*reserved2)(void);
635 void (*reserved3)(void);
636 void (*reserved4)(void);
637 void (*reserved5)(void);
638 void (*reserved6)(void);
639 void (*reserved7)(void);
643 * @brief The pp functions for a backend module.
645 typedef struct _tdm_func_pp {
647 * @brief Destroy a pp object
648 * @param[in] pp A pp object
649 * @see display_create_pp() function of #tdm_func_display
651 void (*pp_destroy)(tdm_pp *pp);
654 * @brief Set the geometry information to a pp object
655 * @param[in] pp A pp object
656 * @param[in] info The geometry information
657 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
658 * @see pp_commit() function of #tdm_func_pp
660 * A backend module would apply the geometry information when committed.
662 tdm_error (*pp_set_info)(tdm_pp *pp, tdm_info_pp *info);
665 * @brief Attach a source buffer and a destination buffer to a pp object
666 * @param[in] pp A pp object
667 * @param[in] src A source buffer
668 * @param[in] dst A destination buffer
669 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
670 * @see pp_set_info() function of #tdm_func_pp
671 * @see pp_commit() function of #tdm_func_pp
672 * @see pp_set_done_handler, tdm_pp_done_handler
674 * A backend module converts the image of a source buffer to a destination
675 * buffer when committed. The size/crop/transform information is set via
676 * #pp_set_info() of #tdm_func_pp. When done, a backend module @b SHOULD
677 * return the source/destination buffer via tdm_pp_done_handler.
679 tdm_error (*pp_attach)(tdm_pp *pp, tbm_surface_h src, tbm_surface_h dst);
682 * @brief Commit changes for a pp object
683 * @param[in] pp A pp object
684 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
686 tdm_error (*pp_commit)(tdm_pp *pp);
689 * @brief Set a user done handler to a pp object
690 * @param[in] pp A pp object
691 * @param[in] func A user done handler
692 * @param[in] user_data user data
693 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
695 * A backend module @b SHOULD call #tdm_pp_done_handler when converintg a image is done.
697 tdm_error (*pp_set_done_handler)(tdm_pp *pp, tdm_pp_done_handler func,
700 void (*reserved1)(void);
701 void (*reserved2)(void);
702 void (*reserved3)(void);
703 void (*reserved4)(void);
704 void (*reserved5)(void);
705 void (*reserved6)(void);
706 void (*reserved7)(void);
707 void (*reserved8)(void);
711 * @brief The capture functions for a backend module.
713 typedef struct _tdm_func_capture {
715 * @brief Destroy a capture object
716 * @param[in] capture A capture object
717 * @see output_create_capture() function of #tdm_func_output
718 * @see layer_create_capture() function of #tdm_func_layer
720 void (*capture_destroy)(tdm_capture *capture);
723 * @brief Set the geometry information to a capture object
724 * @param[in] capture A capture object
725 * @param[in] info The geometry information
726 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
727 * @see capture_commit() function of #tdm_func_capture
729 * A backend module would apply the geometry information when committed.
731 tdm_error (*capture_set_info)(tdm_capture *capture, tdm_info_capture *info);
734 * @brief Attach a TDM buffer to a capture object
735 * @details When capture_commit() function is called, a backend module starts
736 * to dump a output or a layer to a TDM buffer.
737 * @param[in] capture A capture object
738 * @param[in] buffer A TDM buffer
739 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
740 * @see capture_set_info() function of #tdm_func_capture
741 * @see capture_commit() function of #tdm_func_capture
742 * @see capture_set_done_handler, tdm_capture_done_handler
744 * A backend module starts to dump a output or a layer to to a TDM buffer when
745 * committed. The size/crop/transform information is set via #capture_set_info()
746 * of #tdm_func_capture. When done, a backend module @b SHOULD return the TDM
747 * buffer via tdm_capture_done_handler.
749 tdm_error (*capture_attach)(tdm_capture *capture, tbm_surface_h buffer);
752 * @brief Commit changes for a capture object
753 * @param[in] capture A capture object
754 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
756 tdm_error (*capture_commit)(tdm_capture *capture);
759 * @brief Set a user done handler to a capture object
760 * @param[in] capture A capture object
761 * @param[in] func A user done handler
762 * @param[in] user_data user data
763 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
765 * A backend module @b SHOULD call #tdm_capture_done_handler when capture operation is done.
767 tdm_error (*capture_set_done_handler)(tdm_capture *capture,
768 tdm_capture_done_handler func, void *user_data);
770 void (*reserved1)(void);
771 void (*reserved2)(void);
772 void (*reserved3)(void);
773 void (*reserved4)(void);
774 void (*reserved5)(void);
775 void (*reserved6)(void);
776 void (*reserved7)(void);
777 void (*reserved8)(void);
781 * @brief The tdm event source
783 typedef void tdm_event_loop_source;
786 * @brief The fd source handler
788 typedef tdm_error (*tdm_event_loop_fd_handler)(int fd, tdm_event_loop_mask mask, void *user_data);
791 * @brief The timer source handler
793 typedef tdm_error (*tdm_event_loop_timer_handler)(void *user_data);
795 #define TDM_BACKEND_MINOR_VERSION_MASK 0x0000FFFF
796 #define TDM_BACKEND_MAJOR_VERSION_MASK 0xFFFF0000
797 #define TDM_BACKEND_GET_ABI_MINOR(v) ((v) & TDM_BACKEND_MINOR_VERSION_MASK)
798 #define TDM_BACKEND_GET_ABI_MAJOR(v) (((v) & TDM_BACKEND_MAJOR_VERSION_MASK) >> 16)
802 * The ABI version of TDM backend module. It has a major and minor revision.
803 * Modules using lower minor revisions will work with TDM frontend of a higher
804 * minor revision. There is no compatibility between different major revisions.
805 * The minor revision mask is 0x0000FFFF and the major revision mask is 0xFFFF0000.
808 * tdm_backend_module tdm_backend_module_data = {
811 * TDM_BACKEND_SET_ABI_VERSION(1,1),
817 #define TDM_BACKEND_SET_ABI_VERSION(major, minor) \
818 (((major) << 16) & TDM_BACKEND_MAJOR_VERSION_MASK) | \
819 ((major) & TDM_BACKEND_MINOR_VERSION_MASK)
823 * This MACRO is deprecated since 1.2.0. Use TDM_BACKEND_SET_ABI_VERSION instead of this.
825 * Use #TDM_BACKEND_SET_ABI_VERSION macro instead of this macro.
827 #define TDM_BACKEND_ABI_VERSION TDM_BACKEND_SET_ABI_VERSION(1, 1)
830 * @brief The backend module information of the entry point to initialize a TDM
833 * A backend module @b SHOULD define the global data symbol of which name is
834 * @b "tdm_backend_module_data". TDM will read this symbol, @b "tdm_backend_module_data",
835 * at the initial time and call init() function of #tdm_backend_module.
837 typedef struct _tdm_backend_module {
838 const char *name; /**< The module name of a backend module */
839 const char *vendor; /**< The vendor name of a backend module */
840 unsigned long abi_version; /**< The ABI version of a backend module */
843 * @brief The init function of a backend module
844 * @param[in] dpy A display object
845 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
846 * @return The backend module data
847 * @see tdm_backend_data
849 tdm_backend_data *(*init)(tdm_display *dpy, tdm_error *error);
852 * @brief The deinit function of a backend module
853 * @param[in] bdata The backend module data
855 void (*deinit)(tdm_backend_data *bdata);
856 } tdm_backend_module;
859 * @brief Register the backend display functions to a display
860 * @param[in] dpy A display object
861 * @param[in] func_display display functions
862 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
863 * @see tdm_backend_register_func_output, tdm_backend_register_func_layer
865 * A backend module @b SHOULD set the backend display functions at least.
868 tdm_backend_register_func_display(tdm_display *dpy,
869 tdm_func_display *func_display);
872 * @brief Register the backend output functions to a display
873 * @param[in] dpy A display object
874 * @param[in] func_output output functions
875 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
876 * @see tdm_backend_register_func_display, tdm_backend_register_func_layer
878 * A backend module @b SHOULD set the backend output functions at least.
881 tdm_backend_register_func_output(tdm_display *dpy,
882 tdm_func_output *func_output);
885 * @brief Register the backend layer functions to a display
886 * @param[in] dpy A display object
887 * @param[in] func_layer layer functions
888 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
889 * @see tdm_backend_register_func_display, tdm_backend_register_func_output
891 * A backend module @b SHOULD set the backend layer functions at least.
894 tdm_backend_register_func_layer(tdm_display *dpy, tdm_func_layer *func_layer);
897 * @brief Register the backend pp functions to a display
898 * @param[in] dpy A display object
899 * @param[in] func_pp pp functions
900 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
901 * @see tdm_backend_register_func_display, tdm_backend_register_func_capture
903 * A backend module doesn'tcan skip to register the backend pp functions
904 * if a hardware doesn't have the memory-to-memory converting device.
907 tdm_backend_register_func_pp(tdm_display *dpy, tdm_func_pp *func_pp);
910 * @brief Register the backend capture functions to a display
911 * @param[in] dpy A display object
912 * @param[in] func_capture capture functions
913 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
914 * @see tdm_backend_register_func_display, tdm_backend_register_func_pp
916 * A backend module can skip to register the backend capture functions
917 * if a hardware doesn't have the capture device.
920 tdm_backend_register_func_capture(tdm_display *dpy,
921 tdm_func_capture *func_capture);
924 * @brief Increase the ref_count of a TDM buffer
926 * TDM has its own buffer release mechanism to let an frontend user know when a TDM buffer
927 * becomes available for a next job. A TDM buffer can be used for TDM to show
928 * it on screen or to capture an output and a layer. After all operations,
929 * TDM will release it immediately when TDM doesn't need it any more.
930 * @param[in] buffer A TDM buffer
931 * @return A buffer itself. Otherwise, NULL.
932 * @see tdm_buffer_unref_backend
934 * - This function @b SHOULD be paired with #tdm_buffer_unref_backend. \n
935 * - For example, this function @b SHOULD be called in case that a backend module uses the TDM
936 * buffer of a layer for capturing a output or a layer to avoid tearing issue.
939 tdm_buffer_ref_backend(tbm_surface_h buffer);
942 * @brief Decrease the ref_count of a TDM buffer
943 * @param[in] buffer A TDM buffer
944 * @see tdm_buffer_ref_backend
947 tdm_buffer_unref_backend(tbm_surface_h buffer);
950 * @brief The destroy handler of a TDM buffer
951 * @param[in] buffer A TDM buffer
952 * @param[in] user_data user data
953 * @see tdm_buffer_add_destroy_handler, tdm_buffer_remove_destroy_handler
955 typedef void (*tdm_buffer_destroy_handler)(tbm_surface_h buffer,
959 * @brief Add a destroy handler to a TDM buffer
960 * @param[in] buffer A TDM buffer
961 * @param[in] func A destroy handler
962 * @param[in] user_data user data
963 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
964 * @see tdm_buffer_remove_destroy_handler
966 * A backend module can add a TDM buffer destroy handler to a TDM buffer which
967 * is a #tbm_surface_h object. When the TDM buffer is destroyed, this handler will
971 tdm_buffer_add_destroy_handler(tbm_surface_h buffer,
972 tdm_buffer_destroy_handler func, void *user_data);
975 * @brief Remove a destroy handler from a TDM buffer
976 * @param[in] buffer A TDM buffer
977 * @param[in] func A destroy handler
978 * @param[in] user_data user data
979 * @see tdm_buffer_add_destroy_handler
982 tdm_buffer_remove_destroy_handler(tbm_surface_h buffer,
983 tdm_buffer_destroy_handler func, void *user_data);
986 * @brief Add a FD handler for activity on the given file descriptor
987 * @param[in] dpy A display object
988 * @param[in] fd A file descriptor
989 * @param[in] mask to monitor FD
990 * @param[in] func A FD handler function
991 * @param[in] user_data user data
992 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
993 * @return A FD event source
994 * @see #tdm_event_loop_source_fd_update, #tdm_event_loop_source_remove
996 tdm_event_loop_source*
997 tdm_event_loop_add_fd_handler(tdm_display *dpy, int fd, tdm_event_loop_mask mask,
998 tdm_event_loop_fd_handler func, void *user_data,
1002 * @brief Update the mask of the given FD event source
1003 * @param[in] source The given FD event source
1004 * @param[in] mask to monitor FD
1005 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1008 tdm_event_loop_source_fd_update(tdm_event_loop_source *source, tdm_event_loop_mask mask);
1011 * @brief Add a timer handler
1012 * @param[in] dpy A display object
1013 * @param[in] func A timer handler function
1014 * @param[in] user_data user data
1015 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1016 * @return A timer event source
1017 * @see #tdm_event_loop_source_timer_update, #tdm_event_loop_source_remove
1019 tdm_event_loop_source*
1020 tdm_event_loop_add_timer_handler(tdm_display *dpy, tdm_event_loop_timer_handler func,
1021 void *user_data, tdm_error *error);
1024 * @brief Update the millisecond delay time of the given timer event source.
1025 * @param[in] source The given timer event source
1026 * @param[in] ms_delay The millisecond delay time. zero "0" disarms the timer.
1027 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1030 tdm_event_loop_source_timer_update(tdm_event_loop_source *source, unsigned int ms_delay);
1033 * @brief Remove the given event source
1034 * @param[in] source The given event source
1035 * @see #tdm_event_loop_add_fd_handler, #tdm_event_loop_add_timer_handler
1038 tdm_event_loop_source_remove(tdm_event_loop_source *source);
1044 #endif /* _TDM_BACKEND_H_ */