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 output dpms handler
76 * @details This handler will be called when the dpms of a output object is
79 typedef void (*tdm_output_dpms_handler)(tdm_output *output,
84 * @brief The display capabilities structure of a backend module
85 * @see The display_get_capability() function of #tdm_func_display
87 typedef struct _tdm_caps_display {
88 int max_layer_count; /**< The maximum layer count */
92 * @brief The capabilities structure of a output object
93 * @see The output_get_capability() function of #tdm_func_output
95 typedef struct _tdm_caps_output {
96 char maker[TDM_NAME_LEN]; /**< The output maker */
97 char model[TDM_NAME_LEN]; /**< The output model */
98 char name[TDM_NAME_LEN]; /**< The output name */
100 tdm_output_conn_status status; /**< The connection status */
101 tdm_output_type type; /**< The connection type */
102 unsigned int type_id; /**< The connection type id */
104 unsigned int mode_count; /**< The count of available modes */
106 *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
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
480 * @param[in] output A output object
481 * @param[out] mode A output mode
482 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
484 tdm_error (*output_get_mode)(tdm_output *output, const tdm_output_mode **mode);
487 * @brief Create a capture object of a output object
488 * @param[in] output A output object
489 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
490 * @return A capture object
491 * @see capture_destroy() function of #tdm_func_capture
493 * A backend module doesn't need to implement this function if a hardware
494 * doesn't have the capture device.
496 tdm_capture *(*output_create_capture)(tdm_output *output, tdm_error *error);
499 * @brief Set a output connection status handler
500 * @details A backend module need to call the output status handler when the
501 * output connection status has been changed to let the TDM frontend know
503 * @param[in] output A output object
504 * @param[in] func A output status handler
505 * @param[in] user_data The user data
506 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
509 tdm_error (*output_set_status_handler)(tdm_output *output,
510 tdm_output_status_handler func,
514 * @brief Set a output dpms handler
515 * @details A backend module needs to call the output dpms handler when the
516 * output DPMS has been changed to let the TDM frontend know the change.
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.
523 tdm_error (*output_set_dpms_handler)(tdm_output *output,
524 tdm_output_dpms_handler func,
527 * @brief Creates a new window on the given display.
528 * @param[in] output A output object
529 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
530 * @return A created window object
532 tdm_hwc_window *(*output_create_hwc_window)(tdm_output *output, tdm_error *error);
535 * @brief Destroys the given window.
536 * @param[in] output A output object
537 * @param[in] window the pointer of the window to destroy
538 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
540 tdm_error (*output_destroy_hwc_window)(tdm_output *output, tdm_hwc_window *hwc_window);
543 * @brief Set the client(relative to the TDM) target buffer
544 * @details Sets the buffer which will receive the output of client composition.
545 * Window marked as TDM_COMPOSITION_CLIENT or TDM_COMPOSITION_DEVICE_CANDIDATE
546 * will be composited into this buffer prior to the call to output_commit(),
547 * and windows not marked as TDM_COMPOSITION_CLIENT and
548 * TDM_COMPOSITION_DEVICE_CANDIDATE should be composited with this buffer by the
551 * The buffer handle provided may be null if no windows are being composited by
552 * the client. This must not result in an error (unless an invalid display
553 * handle is also provided).
555 * The damage parameter describes a surface damage region as defined in the
556 * description of hwc_window_set_surface_damage().
558 * Will be called before output_commit() if any of the layers are marked as
559 * TDM_COMPOSITION_CLIENT or TDM_COMPOSITION_DEVICE_CANDIDATE. If no layers are
560 * so marked, then it is not necessary to call this function. It is not necessary
561 * to call output_validate() after changing the target through this function.
562 * @param[in] output A output object
563 * @param[in] target The new target buffer
564 * @param[in] damage The surface damage region
565 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
567 tdm_error (*output_set_client_target_buffer)(tdm_output *output, tbm_surface_h target,
568 tdm_hwc_region damage);
571 * @brief Validate the output
572 * @details Instructs the device to inspect all of the layer state and
573 * determine if there are any composition type changes necessary before
574 * presenting the output. Permitted changes are described in the definition
575 * of tdm_composition_t above.
576 * @param[in] output A output object
577 * @param[out] num_types The number of composition type changes required by
578 * the device; if greater than 0, the client must either set and validate new
579 * types, or call output_accept_changes() to accept the changes returned by
580 * output_get_changed_composition_types(); must be the same as the number of
581 * changes returned by output_get_changed_composition_types (see the
582 * declaration of that function for more information); pointer will be non-NULL
583 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
585 tdm_error (*output_validate)(tdm_output *output, uint32_t *num_types);
588 * @brief Get changed composition types
589 * @details Retrieves the windows for which the device requires a different
590 * composition type than had been set prior to the last call to output_validate().
591 * The client will either update its state with these types and call
592 * output_accept_changes, or will set new types and attempt to validate the
594 * layers and types may be NULL to retrieve the number of elements which
595 * will be returned. The number of elements returned must be the same as the
596 * value returned in num_types from the last call to output_validate().
597 * @param[in] output A output object
598 * @param[out] num_elements If windows or types were NULL, the number of layers
599 * and types which would have been returned; if both were non-NULL, the
600 * number of elements returned in layers and types, which must not exceed
601 * the value stored in num_elements prior to the call; pointer will be
603 * @param[out] windows An array of windows
604 * @param[out] composition_types An array of composition types, each
605 * corresponding to an element of windows
606 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
608 tdm_error (*output_get_changed_composition_types)(tdm_output *output,
609 uint32_t *num_elements,
610 tdm_hwc_window **hwc_window,
611 tdm_hwc_window_composition_t *composition_types);
613 * @brief Accepts the changes required by the device
614 * @details Accepts the changes required by the device from the previous
615 * output_validate() call (which may be queried using
616 * output_get_chaged_composition_types()) and revalidates the display. This
617 * function is equivalent to requesting the changed types from
618 * output_get_chaged_composition_types(), setting those types on the
619 * corresponding windows, and then calling output_validate again.
620 * After this call it must be valid to present this display. Calling this after
621 * output_validate() returns 0 changes must succeed with TDM_ERROR_NONE, but
622 * should have no other effect.
623 * @param[in] output A output object
624 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
626 tdm_error (*output_accept_changes)(tdm_output *output);
629 * @brief Get a target surface queue
630 * @param[in] output A output object
631 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
632 * @return A surface queue
634 tbm_surface_queue_h (*output_get_target_surface_queue)(tdm_output *output,
639 * @brief The layer functions for a backend module.
641 typedef struct _tdm_func_layer {
643 * @brief Get the capabilities of a layer object
644 * @param[in] layer A layer object
645 * @param[out] caps The capabilities of a layer object
646 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
648 * A backend module @b SHOULD implement this function. TDM calls this function
649 * not only at the initial time, but also at the update time when new output
651 * #tdm_caps_layer contains avaiable formats/properties, zpos information, etc.
653 tdm_error (*layer_get_capability)(tdm_layer *layer, tdm_caps_layer *caps);
656 * @brief Set the property which has a given id.
657 * @param[in] layer A layer object
658 * @param[in] id The property id
659 * @param[in] value The value
660 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
662 tdm_error (*layer_set_property)(tdm_layer *layer, unsigned int id,
666 * @brief Get the property which has a given id.
667 * @param[in] layer A layer object
668 * @param[in] id The property id
669 * @param[out] value The value
670 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
672 tdm_error (*layer_get_property)(tdm_layer *layer, unsigned int id,
676 * @brief Set the geometry information to a layer object
677 * @param[in] layer A layer object
678 * @param[in] info The geometry information
679 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
680 * @see output_commit() function of #tdm_func_output
682 * A backend module would apply the geometry information when the output object
683 * of a layer object is committed.
685 tdm_error (*layer_set_info)(tdm_layer *layer, tdm_info_layer *info);
688 * @brief Get the geometry information to a layer object
689 * @param[in] layer A layer object
690 * @param[out] info The geometry information
691 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
693 tdm_error (*layer_get_info)(tdm_layer *layer, tdm_info_layer *info);
696 * @brief Set a TDM buffer to a layer object
697 * @param[in] layer A layer object
698 * @param[in] buffer A TDM buffer
699 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
700 * @see output_commit() function of #tdm_func_output
702 * A backend module would show a TDM buffer on screen when the output object
703 * of a layer object is committed.
705 tdm_error (*layer_set_buffer)(tdm_layer *layer, tbm_surface_h buffer);
708 * @brief Unset a TDM buffer from a layer object
709 * @param[in] layer A layer object
710 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
712 * A backend module @b SHOULD remove the current showing buffer from screen.
714 tdm_error (*layer_unset_buffer)(tdm_layer *layer);
717 * @brief Set the zpos for a VIDEO layer object
718 * @param[in] layer A layer object
719 * @param[in] zpos z-order
720 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
721 * @see tdm_caps_layer, tdm_layer_capability
723 * A backend module doesn't need to implement this function if a backend
724 * module doesn't have VIDEO layers.\n
725 * This function is for VIDEO layers.
726 * GRAPHIC layers are non-changeable. The zpos of GRAPHIC layers starts
727 * from 0. If there are 4 GRAPHIC layers, The zpos SHOULD be 0, 1, 2, 3.\n
728 * But the zpos of VIDEO layer is changeable. And The zpos of VIDEO layers
729 * is less than GRAPHIC layers or more than GRAPHIC layers.
730 * ie, ..., -2, -1, 4, 5, ... (if 0 <= GRAPHIC layer's zpos < 4).
731 * The zpos of VIDEO layers is @b relative. It doesn't need to start
732 * from -1 or 4. Let's suppose that there are two VIDEO layers.
733 * One has -2 zpos. Another has -4 zpos. Then -2 Video layer is higher
734 * than -4 VIDEO layer.
736 tdm_error (*layer_set_video_pos)(tdm_layer *layer, int zpos);
739 * @brief Create a capture object of a layer object
740 * @param[in] output A output object
741 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
742 * @return A capture object
743 * @see capture_destroy() function of #tdm_func_capture
745 * A backend module doesn't need to implement this function if a hardware
746 * doesn't have the capture device.
748 tdm_capture *(*layer_create_capture)(tdm_layer *layer, tdm_error *error);
751 * @brief Get buffer flags which the layer can support.
752 * @param[in] layer A layer object
753 * @param[out] flags The buffer flags which should be the tbm_bo flags
754 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
756 tdm_error (*layer_get_buffer_flags)(tdm_layer *layer, unsigned int *flags);
758 void (*reserved1)(void);
759 void (*reserved2)(void);
760 void (*reserved3)(void);
761 void (*reserved4)(void);
762 void (*reserved5)(void);
763 void (*reserved6)(void);
764 void (*reserved7)(void);
768 * @brief The window functions for a backend module.
770 typedef struct _tdm_func_window {
772 * @brief Get a tbm surface queue for the window object
773 * @param[in] hwc_window A window object
774 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
775 * @return A tbm surface queue
777 tbm_surface_queue_h (*hwc_window_get_tbm_surface_queue)(tdm_hwc_window *hwc_window,
781 * @brief Sets the desired Z order (height) of the given window. A window with
782 * a greater Z value occludes a window with a lesser Z value.
783 * @param[in] hwc_window A window object
784 * @param[in] z the new Z order
785 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
787 tdm_error (*hwc_window_set_zpos)(tdm_hwc_window *hwc_window, uint32_t zpos);
790 * @brief Sets the desired composition type of the given window.
791 * @details During output_validate(), the device may request changes to
792 * the composition types of any of the layers as described in the definition
793 * of tdm_hwc_window_composition_t above.
794 * @param[in] hwc_window A window object
795 * @param[in] composition_type The new composition type
796 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
798 tdm_error (*hwc_window_set_composition_type)(tdm_hwc_window *hwc_window,
799 tdm_hwc_window_composition_t composition_type);
802 * @brief Set the surface damage
803 * @details Provides the region of the source buffer which has been modified
804 * since the last frame. This region does not need to be validated before
805 * calling output_commit().
806 * Once set through this function, the damage region remains the same until a
807 * subsequent call to this function.
808 * If damage.num_rects > 0, then it may be assumed that any portion of the source
809 * buffer not covered by one of the rects has not been modified this frame. If
810 * damage.num_rects == 0, then the whole source buffer must be treated as if it
812 * If the layer's contents are not modified relative to the prior frame, damage
813 * will contain exactly one empty rect([0, 0, 0, 0]).
814 * The damage rects are relative to the pre-transformed buffer, and their origin
815 * is the top-left corner. They will not exceed the dimensions of the latched
817 * @param[in] hwc_window A window object
818 * @param[in] damage The new surface damage region
819 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
821 tdm_error (*hwc_window_set_surface_damage)(tdm_hwc_window *hwc_window,
822 tdm_hwc_region damage);
825 * @brief Set the information to a window object
826 * @details The information will be applied when the output object
827 * of a layer object is committed.
828 * @param[in] hwc_window A window object
829 * @param[in] info The geometry information
830 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
832 tdm_error (*hwc_window_set_info)(tdm_hwc_window *hwc_window,
833 tdm_hwc_window_info *info);
836 * @brief Set a TDM buffer to a window object
837 * @details A TDM buffer will be applied when the output object
838 * of a layer object is committed.
839 * @param[in] hwc_window A layer object
840 * @param[in] buffer A TDM buffer
841 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
843 tdm_error (*hwc_window_set_buffer)(tdm_hwc_window *hwc_window,
844 tbm_surface_h buffer);
845 } tdm_func_hwc_window;
848 * @brief The pp functions for a backend module.
850 typedef struct _tdm_func_pp {
852 * @brief Destroy a pp object
853 * @param[in] pp A pp object
854 * @see display_create_pp() function of #tdm_func_display
856 void (*pp_destroy)(tdm_pp *pp);
859 * @brief Set the geometry information to a pp object
860 * @param[in] pp A pp object
861 * @param[in] info The geometry information
862 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
863 * @see pp_commit() function of #tdm_func_pp
865 * A backend module would apply the geometry information when committed.
867 tdm_error (*pp_set_info)(tdm_pp *pp, tdm_info_pp *info);
870 * @brief Attach a source buffer and a destination buffer to a pp object
871 * @param[in] pp A pp object
872 * @param[in] src A source buffer
873 * @param[in] dst A destination buffer
874 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
875 * @see pp_set_info() function of #tdm_func_pp
876 * @see pp_commit() function of #tdm_func_pp
877 * @see pp_set_done_handler, tdm_pp_done_handler
879 * A backend module converts the image of a source buffer to a destination
880 * buffer when committed. The size/crop/transform information is set via
881 * #pp_set_info() of #tdm_func_pp. When done, a backend module @b SHOULD
882 * return the source/destination buffer via tdm_pp_done_handler.
884 tdm_error (*pp_attach)(tdm_pp *pp, tbm_surface_h src, tbm_surface_h dst);
887 * @brief Commit changes for a pp object
888 * @param[in] pp A pp object
889 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
891 tdm_error (*pp_commit)(tdm_pp *pp);
894 * @brief Set a user done handler to a pp object
895 * @param[in] pp A pp object
896 * @param[in] func A user done handler
897 * @param[in] user_data user data
898 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
900 * A backend module @b SHOULD call #tdm_pp_done_handler when converintg a image is done.
902 tdm_error (*pp_set_done_handler)(tdm_pp *pp, tdm_pp_done_handler func,
905 void (*reserved1)(void);
906 void (*reserved2)(void);
907 void (*reserved3)(void);
908 void (*reserved4)(void);
909 void (*reserved5)(void);
910 void (*reserved6)(void);
911 void (*reserved7)(void);
912 void (*reserved8)(void);
916 * @brief The capture functions for a backend module.
918 typedef struct _tdm_func_capture {
920 * @brief Destroy a capture object
921 * @param[in] capture A capture object
922 * @see output_create_capture() function of #tdm_func_output
923 * @see layer_create_capture() function of #tdm_func_layer
925 void (*capture_destroy)(tdm_capture *capture);
928 * @brief Set the geometry information to a capture object
929 * @param[in] capture A capture object
930 * @param[in] info The geometry information
931 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
932 * @see capture_commit() function of #tdm_func_capture
934 * A backend module would apply the geometry information when committed.
936 tdm_error (*capture_set_info)(tdm_capture *capture, tdm_info_capture *info);
939 * @brief Attach a TDM buffer to a capture object
940 * @details When capture_commit() function is called, a backend module starts
941 * to dump a output or a layer to a TDM buffer.
942 * @param[in] capture A capture object
943 * @param[in] buffer A TDM buffer
944 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
945 * @see capture_set_info() function of #tdm_func_capture
946 * @see capture_commit() function of #tdm_func_capture
947 * @see capture_set_done_handler, tdm_capture_done_handler
949 * A backend module starts to dump a output or a layer to to a TDM buffer when
950 * committed. The size/crop/transform information is set via #capture_set_info()
951 * of #tdm_func_capture. When done, a backend module @b SHOULD return the TDM
952 * buffer via tdm_capture_done_handler.
954 tdm_error (*capture_attach)(tdm_capture *capture, tbm_surface_h buffer);
957 * @brief Commit changes for a capture object
958 * @param[in] capture A capture object
959 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
961 tdm_error (*capture_commit)(tdm_capture *capture);
964 * @brief Set a user done handler to a capture object
965 * @param[in] capture A capture object
966 * @param[in] func A user done handler
967 * @param[in] user_data user data
968 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
970 * A backend module @b SHOULD call #tdm_capture_done_handler when capture operation is done.
972 tdm_error (*capture_set_done_handler)(tdm_capture *capture,
973 tdm_capture_done_handler func, void *user_data);
975 void (*reserved1)(void);
976 void (*reserved2)(void);
977 void (*reserved3)(void);
978 void (*reserved4)(void);
979 void (*reserved5)(void);
980 void (*reserved6)(void);
981 void (*reserved7)(void);
982 void (*reserved8)(void);
986 * @brief The tdm event source
988 typedef void tdm_event_loop_source;
991 * @brief The fd source handler
993 typedef tdm_error (*tdm_event_loop_fd_handler)(int fd, tdm_event_loop_mask mask, void *user_data);
996 * @brief The timer source handler
998 typedef tdm_error (*tdm_event_loop_timer_handler)(void *user_data);
1000 #define TDM_BACKEND_MINOR_VERSION_MASK 0x0000FFFF
1001 #define TDM_BACKEND_MAJOR_VERSION_MASK 0xFFFF0000
1002 #define TDM_BACKEND_GET_ABI_MINOR(v) ((v) & TDM_BACKEND_MINOR_VERSION_MASK)
1003 #define TDM_BACKEND_GET_ABI_MAJOR(v) (((v) & TDM_BACKEND_MAJOR_VERSION_MASK) >> 16)
1007 * The ABI version of TDM backend module. It has a major and minor revision.
1008 * Modules using lower minor revisions will work with TDM frontend of a higher
1009 * minor revision. There is no compatibility between different major revisions.
1010 * The minor revision mask is 0x0000FFFF and the major revision mask is 0xFFFF0000.
1013 * tdm_backend_module tdm_backend_module_data = {
1016 * TDM_BACKEND_SET_ABI_VERSION(1,1),
1022 #define TDM_BACKEND_SET_ABI_VERSION(major, minor) \
1023 (((major) << 16) & TDM_BACKEND_MAJOR_VERSION_MASK) | \
1024 ((minor) & TDM_BACKEND_MINOR_VERSION_MASK)
1028 * This MACRO is deprecated since 1.2.0. Use TDM_BACKEND_SET_ABI_VERSION instead of this.
1030 * Use #TDM_BACKEND_SET_ABI_VERSION macro instead of this macro.
1032 #define TDM_BACKEND_ABI_VERSION TDM_BACKEND_SET_ABI_VERSION(1, 1)
1035 * @brief The backend module information of the entry point to initialize a TDM
1038 * A backend module @b SHOULD define the global data symbol of which name is
1039 * @b "tdm_backend_module_data". TDM will read this symbol, @b "tdm_backend_module_data",
1040 * at the initial time and call init() function of #tdm_backend_module.
1042 typedef struct _tdm_backend_module {
1043 const char *name; /**< The module name of a backend module */
1044 const char *vendor; /**< The vendor name of a backend module */
1045 unsigned long abi_version; /**< The ABI version of a backend module */
1048 * @brief The init function of a backend module
1049 * @param[in] dpy A display object
1050 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1051 * @return The backend module data
1052 * @see tdm_backend_data
1054 tdm_backend_data *(*init)(tdm_display *dpy, tdm_error *error);
1057 * @brief The deinit function of a backend module
1058 * @param[in] bdata The backend module data
1060 void (*deinit)(tdm_backend_data *bdata);
1061 } tdm_backend_module;
1064 * @brief Register the backend display functions to a display
1065 * @param[in] dpy A display object
1066 * @param[in] func_display display functions
1067 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1068 * @see tdm_backend_register_func_output, tdm_backend_register_func_layer
1070 * A backend module @b SHOULD set the backend display functions at least.
1073 tdm_backend_register_func_display(tdm_display *dpy,
1074 tdm_func_display *func_display);
1077 * @brief Register the backend output functions to a display
1078 * @param[in] dpy A display object
1079 * @param[in] func_output output functions
1080 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1081 * @see tdm_backend_register_func_display, tdm_backend_register_func_layer
1083 * A backend module @b SHOULD set the backend output functions at least.
1086 tdm_backend_register_func_output(tdm_display *dpy,
1087 tdm_func_output *func_output);
1090 * @brief Register the backend layer functions to a display
1091 * @param[in] dpy A display object
1092 * @param[in] func_layer layer functions
1093 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1094 * @see tdm_backend_register_func_display, tdm_backend_register_func_output
1096 * A backend module @b SHOULD set the backend layer functions at least.
1099 tdm_backend_register_func_layer(tdm_display *dpy, tdm_func_layer *func_layer);
1102 * @brief Register the backend hwc_window functions to a display
1103 * @param[in] dpy A display object
1104 * @param[in] func_hwc_window hwc_window functions
1105 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1106 * @see tdm_backend_register_func_display, tdm_backend_register_func_output
1108 * A backend module @b SHOULD set the backend hwc_window functions at least.
1111 tdm_backend_register_func_hwc_window(tdm_display *dpy, tdm_func_hwc_window *func_hwc_window);
1114 * @brief Register the backend pp functions to a display
1115 * @param[in] dpy A display object
1116 * @param[in] func_pp pp functions
1117 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1118 * @see tdm_backend_register_func_display, tdm_backend_register_func_capture
1120 * A backend module doesn'tcan skip to register the backend pp functions
1121 * if a hardware doesn't have the memory-to-memory converting device.
1124 tdm_backend_register_func_pp(tdm_display *dpy, tdm_func_pp *func_pp);
1127 * @brief Register the backend capture functions to a display
1128 * @param[in] dpy A display object
1129 * @param[in] func_capture capture functions
1130 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1131 * @see tdm_backend_register_func_display, tdm_backend_register_func_pp
1133 * A backend module can skip to register the backend capture functions
1134 * if a hardware doesn't have the capture device.
1137 tdm_backend_register_func_capture(tdm_display *dpy,
1138 tdm_func_capture *func_capture);
1141 * @brief Increase the ref_count of a TDM buffer
1143 * TDM has its own buffer release mechanism to let an frontend user know when a TDM buffer
1144 * becomes available for a next job. A TDM buffer can be used for TDM to show
1145 * it on screen or to capture an output and a layer. After all operations,
1146 * TDM will release it immediately when TDM doesn't need it any more.
1147 * @param[in] buffer A TDM buffer
1148 * @return A buffer itself. Otherwise, NULL.
1149 * @see tdm_buffer_unref_backend
1151 * - This function @b SHOULD be paired with #tdm_buffer_unref_backend. \n
1152 * - For example, this function @b SHOULD be called in case that a backend module uses the TDM
1153 * buffer of a layer for capturing a output or a layer to avoid tearing issue.
1156 tdm_buffer_ref_backend(tbm_surface_h buffer);
1159 * @brief Decrease the ref_count of a TDM buffer
1160 * @param[in] buffer A TDM buffer
1161 * @see tdm_buffer_ref_backend
1164 tdm_buffer_unref_backend(tbm_surface_h buffer);
1167 * @brief The destroy handler of a TDM buffer
1168 * @param[in] buffer A TDM buffer
1169 * @param[in] user_data user data
1170 * @see tdm_buffer_add_destroy_handler, tdm_buffer_remove_destroy_handler
1172 typedef void (*tdm_buffer_destroy_handler)(tbm_surface_h buffer,
1176 * @brief Add a destroy handler to a TDM buffer
1177 * @param[in] buffer A TDM buffer
1178 * @param[in] func A destroy handler
1179 * @param[in] user_data user data
1180 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1181 * @see tdm_buffer_remove_destroy_handler
1183 * A backend module can add a TDM buffer destroy handler to a TDM buffer which
1184 * is a #tbm_surface_h object. When the TDM buffer is destroyed, this handler will
1188 tdm_buffer_add_destroy_handler(tbm_surface_h buffer,
1189 tdm_buffer_destroy_handler func, void *user_data);
1192 * @brief Remove a destroy handler from a TDM buffer
1193 * @param[in] buffer A TDM buffer
1194 * @param[in] func A destroy handler
1195 * @param[in] user_data user data
1196 * @see tdm_buffer_add_destroy_handler
1199 tdm_buffer_remove_destroy_handler(tbm_surface_h buffer,
1200 tdm_buffer_destroy_handler func, void *user_data);
1203 * @brief Add a FD handler for activity on the given file descriptor
1204 * @param[in] dpy A display object
1205 * @param[in] fd A file descriptor
1206 * @param[in] mask to monitor FD
1207 * @param[in] func A FD handler function
1208 * @param[in] user_data user data
1209 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1210 * @return A FD event source
1211 * @see #tdm_event_loop_source_fd_update, #tdm_event_loop_source_remove
1213 tdm_event_loop_source*
1214 tdm_event_loop_add_fd_handler(tdm_display *dpy, int fd, tdm_event_loop_mask mask,
1215 tdm_event_loop_fd_handler func, void *user_data,
1219 * @brief Update the mask of the given FD event source
1220 * @param[in] source The given FD event source
1221 * @param[in] mask to monitor FD
1222 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1225 tdm_event_loop_source_fd_update(tdm_event_loop_source *source, tdm_event_loop_mask mask);
1228 * @brief Add a timer handler
1229 * @param[in] dpy A display object
1230 * @param[in] func A timer handler function
1231 * @param[in] user_data user data
1232 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
1233 * @return A timer event source
1234 * @see #tdm_event_loop_source_timer_update, #tdm_event_loop_source_remove
1236 tdm_event_loop_source*
1237 tdm_event_loop_add_timer_handler(tdm_display *dpy, tdm_event_loop_timer_handler func,
1238 void *user_data, tdm_error *error);
1241 * @brief Update the millisecond delay time of the given timer event source.
1242 * @param[in] source The given timer event source
1243 * @param[in] ms_delay The millisecond delay time. zero "0" disarms the timer.
1244 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
1247 tdm_event_loop_source_timer_update(tdm_event_loop_source *source, unsigned int ms_delay);
1250 * @brief Remove the given event source
1251 * @param[in] source The given event source
1252 * @see #tdm_event_loop_add_fd_handler, #tdm_event_loop_add_timer_handler
1255 tdm_event_loop_source_remove(tdm_event_loop_source *source);
1261 #endif /* _TDM_BACKEND_H_ */