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>
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the
16 * "Software"), to deal in the Software without restriction, including
17 * without limitation the rights to use, copy, modify, merge, publish,
18 * distribute, sub license, and/or sell copies of the Software, and to
19 * permit persons to whom the Software is furnished to do so, subject to
20 * the following conditions:
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
27 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
29 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
30 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
31 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
32 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 **************************************************************************/
41 #include "tdm_private.h"
45 * Basically tdm vblank doesn't care about thread things.
46 * However, to use tdm_event_loop_xxx functions, have to use the internal function.
47 * So need to lock/unlock the mutex of private_display. And valid_vblank_list and
48 * valid_wait_list should be protected by valid_list_lock because tdm_vblank can
49 * be used in multi-thread.
53 * - aligned by HW vblank
54 * - use a tdm_event_loop_source object only.
57 /* We expact "(unsigned int)(0.0016667 / 0.0016667) = 1". But it becomes 0. */
58 #define TDM_TIME_MARGIN 0.0000001
60 #define TDM_VBLANK_UINT_MAX 4294967295U
61 #define TDM_VBLANK_UINT_1Q 1073741823U /* UINT_MAX / 4 */
62 #define TDM_VBLANK_UINT_3Q 3221225471U /* UINT_MAX / 4 * 3 */
64 /* (seq < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < last_seq) means
65 * that the sequence value has reached the max value and started from 0 again.
67 #define TDM_VBLANK_SEQ_REACHED_MAX(seq, last_seq) \
68 ((seq) < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < (last_seq))
70 #define VER(fmt, arg...) TDM_ERR("[%p] "fmt, private_vblank, ##arg)
71 #define VWR(fmt, arg...) TDM_WRN("[%p] "fmt, private_vblank, ##arg)
72 #define VIN(fmt, arg...) TDM_INFO("[%p] "fmt, private_vblank, ##arg)
73 #define VDB(fmt, arg...) TDM_DBG("[%p] "fmt, private_vblank, ##arg)
80 } tdm_vblank_wait_type;
82 typedef struct _tdm_vblank_wait_info tdm_vblank_wait_info;
84 typedef struct _tdm_private_vblank {
85 struct list_head valid_link;
93 unsigned int vrefresh;
95 unsigned int check_HW_or_SW;
96 char name[TDM_NAME_LEN];
99 unsigned int enable_fake;
100 unsigned int ignore_global_fps;
103 unsigned int quotient;
105 unsigned int last_seq;
108 unsigned int add_front;
109 struct wl_resource *resource;
112 double HW_vblank_gap;
113 struct list_head HW_wait_list;
116 tdm_event_loop_source *SW_timer;
117 struct list_head SW_wait_list;
118 } tdm_private_vblank;
120 struct _tdm_vblank_wait_info {
121 struct list_head link;
122 struct list_head valid_link;
127 unsigned int interval;
129 tdm_vblank_handler func;
131 tdm_private_vblank *private_vblank;
133 tdm_vblank_wait_type type;
136 unsigned int target_seq;
139 /* valid_vblank_list and valid_wait_list should be protected by valid_list_lock because
140 * tdm_vblank can be used in multi-thread.
142 static pthread_mutex_t valid_list_lock;
143 static struct list_head valid_vblank_list;
144 static struct list_head valid_wait_list;
145 static unsigned int vblank_list_inited;
146 static unsigned int vblank_global_fps;
147 static double stamp = 0;
149 static tdm_error _tdm_vblank_cb_vblank_SW(void *user_data);
150 static tdm_error _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info);
151 static void _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
152 unsigned int tv_sec, unsigned int tv_usec,
157 _print_list(struct list_head *list)
159 tdm_vblank_wait_info *w = NULL;
161 LIST_FOR_EACH_ENTRY(w, list, link) {
162 printf(" %d", w->interval);
169 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
171 pthread_mutex_lock(&valid_list_lock);
172 LIST_ADDTAIL(valid_link, valid_list);
173 pthread_mutex_unlock(&valid_list_lock);
177 _tdm_vblank_valid_list_del(struct list_head *valid_link)
179 pthread_mutex_lock(&valid_list_lock);
180 LIST_DEL(valid_link);
181 pthread_mutex_unlock(&valid_list_lock);
184 static inline tdm_private_vblank*
185 _tdm_vblank_find(double vblank_stamp)
187 tdm_private_vblank *v = NULL;
192 pthread_mutex_lock(&valid_list_lock);
193 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
194 if (v->stamp == vblank_stamp) {
195 pthread_mutex_unlock(&valid_list_lock);
199 pthread_mutex_unlock(&valid_list_lock);
204 static inline unsigned int
205 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
207 tdm_vblank_wait_info *w = NULL;
212 pthread_mutex_lock(&valid_list_lock);
213 LIST_FOR_EACH_ENTRY(w, &valid_wait_list, valid_link) {
214 if (w == wait_info) {
215 pthread_mutex_unlock(&valid_list_lock);
219 pthread_mutex_unlock(&valid_list_lock);
224 static inline unsigned int
225 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
227 tdm_vblank_wait_info *w = NULL;
232 LIST_FOR_EACH_ENTRY(w, list, link) {
233 if (w->stamp == wait_info->stamp)
241 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
243 tdm_vblank_wait_info *w = NULL;
244 tdm_vblank_wait_info *found = NULL;
246 if (LIST_IS_EMPTY(list)) {
247 LIST_ADDTAIL(&wait_info->link, list);
251 LIST_FOR_EACH_ENTRY(w, list, link) {
252 if (wait_info->type == VBLANK_TYPE_SW) {
253 if (wait_info->target_time == 0)
254 TDM_NEVER_GET_HERE();
255 if (w->target_time <= wait_info->target_time) {
260 if (w->interval <= wait_info->interval) {
268 LIST_ADD(&wait_info->link, &found->link);
270 LIST_ADDTAIL(&wait_info->link, list->next);
274 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
276 tdm_vblank_wait_info *w = NULL, *ww = NULL;
278 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
281 tdm_display_lock(private_vblank->dpy);
282 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
283 tdm_display_unlock(private_vblank->dpy);
285 w->type = VBLANK_TYPE_SW_FAKE;
286 _tdm_vblank_wait_SW(w);
291 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
293 tdm_vblank_wait_info *w = NULL, *ww = NULL;
295 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
297 _tdm_vblank_valid_list_del(&w->valid_link);
299 tdm_display_lock(private_vblank->dpy);
300 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
301 tdm_display_unlock(private_vblank->dpy);
303 if (call_cb && w->func)
304 w->func(private_vblank, error, 0, 0, 0, w->user_data);
311 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
312 tdm_value value, void *user_data)
314 tdm_private_vblank *private_vblank = user_data;
316 TDM_RETURN_IF_FAIL(private_vblank != NULL);
319 case TDM_OUTPUT_CHANGE_DPMS:
320 if (private_vblank->dpms == value.u32)
322 VDB("dpms %s", tdm_dpms_str(value.u32));
323 private_vblank->dpms = value.u32;
324 private_vblank->check_HW_or_SW = 1;
325 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON) {
326 if (private_vblank->enable_fake)
327 _tdm_vblank_change_to_SW(private_vblank);
329 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
332 case TDM_OUTPUT_CHANGE_CONNECTION:
333 VDB("output %s", tdm_status_str(value.u32));
334 if (value.u32 == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
335 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
343 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
345 tdm_private_vblank *v = NULL;
347 TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
348 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
350 TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
352 pthread_mutex_lock(&valid_list_lock);
353 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
354 struct wl_client *client;
355 pid_t client_pid = 0;
360 client = wl_resource_get_client(v->resource);
364 wl_client_get_credentials(client, &client_pid, NULL, NULL);
366 if (client_pid != pid)
369 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
370 if (strncmp(v->name, name, TDM_NAME_LEN))
374 tdm_vblank_set_fps(v, fps);
376 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
378 pthread_mutex_unlock(&valid_list_lock);
380 return TDM_ERROR_NONE;
384 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
386 tdm_private_vblank *v = NULL;
389 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
391 TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
393 pthread_mutex_lock(&valid_list_lock);
395 vblank_global_fps = (enable) ? fps : 0;
397 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
398 /* skip if vblank is created in server side */
402 v->check_HW_or_SW = 1;
404 pthread_mutex_unlock(&valid_list_lock);
406 return TDM_ERROR_NONE;
410 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
412 tdm_private_vblank *private_vblank;
413 const tdm_output_mode *mode = NULL;
414 tdm_output_dpms dpms = TDM_OUTPUT_DPMS_ON;
417 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
418 TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
421 *error = TDM_ERROR_NONE;
423 if (!vblank_list_inited) {
424 if (pthread_mutex_init(&valid_list_lock, NULL)) {
425 TDM_ERR("mutex init failed: %m");
427 *error = TDM_ERROR_OPERATION_FAILED;
430 LIST_INITHEAD(&valid_vblank_list);
431 LIST_INITHEAD(&valid_wait_list);
432 vblank_list_inited = 1;
435 tdm_output_get_mode(output, &mode);
438 *error = TDM_ERROR_OPERATION_FAILED;
443 tdm_output_get_dpms(output, &dpms);
445 private_vblank = calloc(1, sizeof * private_vblank);
446 if (!private_vblank) {
448 *error = TDM_ERROR_OUT_OF_MEMORY;
453 tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
455 private_vblank->stamp = ++stamp;
456 private_vblank->owner_tid = syscall(SYS_gettid);
457 private_vblank->dpy = dpy;
458 private_vblank->output = output;
459 private_vblank->dpms = dpms;
460 private_vblank->vrefresh = mode->vrefresh;
461 private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
463 private_vblank->check_HW_or_SW = 1;
464 private_vblank->fps = mode->vrefresh;
466 strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
467 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
469 LIST_INITHEAD(&private_vblank->HW_wait_list);
470 LIST_INITHEAD(&private_vblank->SW_wait_list);
472 _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
474 if (tdm_debug_module & TDM_DEBUG_VBLANK)
475 VIN("created. vrefresh(%d) dpms(%d)",
476 private_vblank->vrefresh, private_vblank->dpms);
478 return (tdm_vblank *)private_vblank;
482 tdm_vblank_destroy(tdm_vblank *vblank)
484 tdm_private_vblank *private_vblank = vblank;
485 tdm_vblank_wait_info *w = NULL, *ww = NULL;
490 _tdm_vblank_valid_list_del(&private_vblank->valid_link);
492 if (private_vblank->SW_timer) {
493 tdm_display_lock(private_vblank->dpy);
494 tdm_event_loop_source_remove(private_vblank->SW_timer);
495 tdm_display_unlock(private_vblank->dpy);
498 tdm_output_remove_change_handler(private_vblank->output,
499 _tdm_vblank_cb_output_change, private_vblank);
501 _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
503 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
505 _tdm_vblank_valid_list_del(&w->valid_link);
509 if (tdm_debug_module & TDM_DEBUG_VBLANK)
512 free(private_vblank);
516 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
518 tdm_private_vblank *private_vblank = vblank;
520 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
523 name = TDM_VBLANK_DEFAULT_NAME;
525 strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
526 private_vblank->name[TDM_NAME_LEN - 1] = '\0';
528 if (tdm_debug_module & TDM_DEBUG_VBLANK)
529 VIN("name(%s)", name);
531 return TDM_ERROR_NONE;
535 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
537 tdm_private_vblank *private_vblank = vblank;
539 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
540 TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
542 *name = (const char*)private_vblank->name;
544 return TDM_ERROR_NONE;
548 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
550 tdm_private_vblank *private_vblank = vblank;
552 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
553 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
555 if (private_vblank->fps == fps)
556 return TDM_ERROR_NONE;
558 private_vblank->fps = fps;
559 private_vblank->check_HW_or_SW = 1;
561 if (tdm_debug_module & TDM_DEBUG_VBLANK)
562 VIN("fps(%d)", private_vblank->fps);
564 return TDM_ERROR_NONE;
568 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
570 tdm_private_vblank *private_vblank = vblank;
572 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
573 TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
575 *fps = private_vblank->fps;
577 return TDM_ERROR_NONE;
581 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
583 tdm_private_vblank *private_vblank = vblank;
585 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
587 if (private_vblank->ignore_global_fps == ignore)
588 return TDM_ERROR_NONE;
590 private_vblank->ignore_global_fps = ignore;
591 private_vblank->check_HW_or_SW = 1;
593 if (tdm_debug_module & TDM_DEBUG_VBLANK)
594 VIN("ignore_global_fps(%d)", private_vblank->ignore_global_fps);
596 return TDM_ERROR_NONE;
600 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
602 tdm_private_vblank *private_vblank = vblank;
604 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
606 if (private_vblank->offset == offset)
607 return TDM_ERROR_NONE;
609 private_vblank->offset = offset;
610 private_vblank->check_HW_or_SW = 1;
612 if (tdm_debug_module & TDM_DEBUG_VBLANK)
613 VIN("offset(%d)", private_vblank->offset);
615 return TDM_ERROR_NONE;
619 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
621 tdm_private_vblank *private_vblank = vblank;
623 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
624 TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
626 *offset = private_vblank->offset;
628 return TDM_ERROR_NONE;
632 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
634 tdm_private_vblank *private_vblank = vblank;
636 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
638 if (private_vblank->enable_fake == enable_fake)
639 return TDM_ERROR_NONE;
641 private_vblank->enable_fake = enable_fake;
643 if (tdm_debug_module & TDM_DEBUG_VBLANK)
644 VIN("enable_fake(%d)", private_vblank->enable_fake);
646 return TDM_ERROR_NONE;
650 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
652 tdm_private_vblank *private_vblank = vblank;
654 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
655 TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
657 *enable_fake = private_vblank->enable_fake;
659 return TDM_ERROR_NONE;
663 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
665 tdm_vblank_wait_info *first_wait_info = NULL;
670 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
672 return TDM_ERROR_OPERATION_FAILED;
675 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
676 curr = tdm_helper_get_time();
677 target = first_wait_info->target_time;
679 /* ms_delay should be more that 1 */
683 ms_delay = ceil((target - curr) * 1000.0);
689 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
690 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
691 VIN("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
693 tdm_display_lock(private_vblank->dpy);
695 if (!private_vblank->SW_timer) {
696 private_vblank->SW_timer =
697 tdm_event_loop_add_timer_handler(private_vblank->dpy,
698 _tdm_vblank_cb_vblank_SW,
701 if (!private_vblank->SW_timer) {
702 tdm_display_unlock(private_vblank->dpy);
703 VER("couldn't add timer");
706 VIN("Use SW vblank");
709 ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
710 if (ret != TDM_ERROR_NONE) {
711 tdm_display_unlock(private_vblank->dpy);
712 VER("couldn't update timer");
716 tdm_display_unlock(private_vblank->dpy);
718 return TDM_ERROR_NONE;
722 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
723 unsigned int tv_sec, unsigned int tv_usec,
726 tdm_vblank_wait_info *wait_info = user_data;
727 tdm_private_vblank *private_vblank;
729 if (!_tdm_vblank_check_valid_wait(wait_info)) {
730 TDM_DBG("can't find wait(%p) from valid_wait_list", wait_info);
734 private_vblank = wait_info->private_vblank;
735 TDM_RETURN_IF_FAIL(private_vblank != NULL);
737 if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
738 VDB("can't find wait(%p)", wait_info);
742 if (wait_info->type == VBLANK_TYPE_HW_SW) {
745 LIST_DEL(&wait_info->link);
747 /* kernel sends the wrong time of first vblank event. and the time of
748 * second vblank is correct.
750 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
751 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
753 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
755 ret = _tdm_vblank_sw_timer_update(private_vblank);
757 /* wait_info will be freed in _tdm_vblank_cb_vblank_SW() */
758 if (ret == TDM_ERROR_NONE) {
759 if (tdm_debug_module & TDM_DEBUG_VBLANK)
760 VIN("wait(%p) SW timer", wait_info);
764 VWR("couldn't update sw timer");
767 /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
768 * We need to prohibit that last_time becomes zero because "last_time == 0" means
769 * that a tdm_vblank object is just created and doesn't have the first vblank event.
770 * If last_time becomes 0, it would make issue.
772 if (tv_sec == 0 && tv_usec == 0) {
773 double curr = tdm_helper_get_time();
774 tv_sec = TDM_TIME_SEC(curr);
775 tv_usec = TDM_TIME_USEC(curr);
778 private_vblank->last_seq = wait_info->target_seq;
779 private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
781 if (tdm_debug_module & TDM_DEBUG_VBLANK)
782 VIN("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
785 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
786 tv_sec, tv_usec, wait_info->user_data);
788 LIST_DEL(&wait_info->link);
789 _tdm_vblank_valid_list_del(&wait_info->valid_link);
794 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
796 tdm_private_vblank *private_vblank = wait_info->private_vblank;
800 _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
802 hw_interval = wait_info->interval * private_vblank->quotient;
804 if (private_vblank->last_time == 0) {
805 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
806 private_vblank->last_seq = 0;
807 private_vblank->last_time = tdm_helper_get_time();
809 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
810 wait_info->target_seq = 1;
811 if (tdm_debug_module & TDM_DEBUG_VBLANK)
812 VIN("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
813 wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
815 double last, prev, req, curr, target;
818 last = private_vblank->last_time;
819 req = wait_info->req_time;
821 /* make sure that req time is bigger than last. */
825 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
826 prev = last + private_vblank->vblank_gap * skip;
828 curr = tdm_helper_get_time();
830 while (target < curr)
831 target += (private_vblank->vblank_gap * wait_info->interval);
833 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
835 wait_info->target_seq = private_vblank->last_seq;
836 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
838 if (hw_interval > 300)
839 VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
840 wait_info, last, req - last, prev - last, curr - last, target, target - last,
841 skip, hw_interval, wait_info->target_seq);
842 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
843 VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
844 wait_info, last, req - last, prev - last, curr - last, target, target - last,
845 skip, hw_interval, wait_info->target_seq);
848 if (private_vblank->add_front)
849 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
850 _tdm_vblank_cb_vblank_HW, wait_info);
852 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
853 _tdm_vblank_cb_vblank_HW, wait_info);
855 if (ret != TDM_ERROR_NONE) {
856 LIST_DEL(&wait_info->link);
860 if (tdm_debug_module & TDM_DEBUG_VBLANK)
861 VIN("wait(%p) waiting", wait_info);
863 return TDM_ERROR_NONE;
867 _tdm_vblank_cb_vblank_SW(void *user_data)
869 tdm_private_vblank *private_vblank = user_data;
871 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
873 return tdm_vblank_cb_vblank_SW(private_vblank, 0);
877 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp)
879 tdm_private_vblank *private_vblank;
880 tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
882 TDM_RETURN_VAL_IF_FAIL(vblank || vblank_stamp > 0, TDM_ERROR_INVALID_PARAMETER);
885 private_vblank = vblank;
887 private_vblank = _tdm_vblank_find(vblank_stamp);
888 if (!private_vblank) {
889 TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_stamp);
890 return TDM_ERROR_NONE;
894 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
895 tdm_thread_cb_vblank_sw vblank_sw;
896 tdm_private_display *private_display = private_vblank->dpy;
899 vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
900 vblank_sw.base.length = sizeof vblank_sw;
901 vblank_sw.vblank_stamp = private_vblank->stamp;
903 ret = tdm_thread_send_cb(private_display->private_loop, &vblank_sw.base);
904 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
906 return TDM_ERROR_NONE;
909 if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
911 return TDM_ERROR_OPERATION_FAILED;
914 first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
915 TDM_RETURN_VAL_IF_FAIL(first_wait_info != NULL, TDM_ERROR_OPERATION_FAILED);
917 if (private_vblank->last_seq >= first_wait_info->target_seq)
918 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
920 private_vblank->last_seq = first_wait_info->target_seq;
921 private_vblank->last_time = first_wait_info->target_time;
923 if (tdm_debug_module & TDM_DEBUG_VBLANK)
924 VIN("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
926 LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
927 if (w->target_time != first_wait_info->target_time)
931 _tdm_vblank_valid_list_del(&w->valid_link);
934 tdm_display_unlock(private_vblank->dpy);
935 w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
936 TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
938 tdm_display_lock(private_vblank->dpy);
944 return TDM_ERROR_NONE;
948 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
950 tdm_private_vblank *private_vblank = wait_info->private_vblank;
953 if (private_vblank->last_time == 0) {
954 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
955 private_vblank->last_seq = 0;
956 private_vblank->last_time = tdm_helper_get_time();
958 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
959 wait_info->target_seq = 1;
960 wait_info->target_time = private_vblank->last_time + 0.001;
962 if (tdm_debug_module & TDM_DEBUG_VBLANK)
963 VIN("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
964 wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
966 double last, prev, req, curr, target;
969 last = private_vblank->last_time;
970 req = wait_info->req_time;
972 /* make sure that req time is bigger than last. */
976 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
977 prev = last + private_vblank->vblank_gap * skip;
979 curr = tdm_helper_get_time();
980 target = prev + private_vblank->vblank_gap * wait_info->interval;
982 while (target < curr)
983 target += private_vblank->vblank_gap;
985 wait_info->target_seq = private_vblank->last_seq;
986 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
988 wait_info->target_time = target;
990 if (tdm_debug_module & TDM_DEBUG_VBLANK)
991 VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
992 wait_info, last, req - last, prev - last, curr - last,
993 target, target - last, skip, wait_info->target_seq);
996 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
998 ret = _tdm_vblank_sw_timer_update(private_vblank);
999 if (ret != TDM_ERROR_NONE) {
1000 LIST_DEL(&wait_info->link);
1001 VER("couldn't update sw timer");
1005 return TDM_ERROR_NONE;
1009 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1010 unsigned int interval, tdm_vblank_handler func, void *user_data)
1012 tdm_private_vblank *private_vblank = vblank;
1013 tdm_vblank_wait_info *wait_info;
1017 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1018 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1020 if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1021 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1022 return TDM_ERROR_BAD_REQUEST;
1025 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON && !private_vblank->enable_fake) {
1026 VIN("can't wait a vblank because of DPMS off");
1027 return TDM_ERROR_DPMS_OFF;
1030 wait_info = calloc(1, sizeof * wait_info);
1032 VER("alloc failed");
1033 return TDM_ERROR_OUT_OF_MEMORY;
1036 /* set request time to current time if 0. This function seems to be called in server side. */
1037 if (req_sec == 0 && req_usec == 0) {
1038 double curr = tdm_helper_get_time();
1039 req_sec = TDM_TIME_SEC(curr);
1040 req_usec = TDM_TIME_USEC(curr);
1043 LIST_INITHEAD(&wait_info->link);
1045 _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1047 wait_info->stamp = ++stamp;
1048 wait_info->req_time = TDM_TIME(req_sec, req_usec);
1049 wait_info->interval = interval;
1050 wait_info->func = func;
1051 wait_info->user_data = user_data;
1052 wait_info->private_vblank = private_vblank;
1054 if (private_vblank->ignore_global_fps ||
1055 vblank_global_fps == 0 ||
1056 private_vblank->fps < vblank_global_fps)
1057 fps = private_vblank->fps;
1059 fps = vblank_global_fps;
1061 if (private_vblank->check_HW_or_SW) {
1062 private_vblank->check_HW_or_SW = 0;
1063 private_vblank->vblank_gap = 1.0 / fps;
1064 private_vblank->quotient = private_vblank->vrefresh / fps;
1067 /* 1) if fps != factor of vrefresh, SW timer
1068 * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1069 * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1070 * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1071 * In case of 1), we really don't need to align with HW vblank.
1073 if (private_vblank->vrefresh % fps)
1074 wait_info->type = VBLANK_TYPE_SW;
1075 else if (private_vblank->dpms == TDM_OUTPUT_DPMS_OFF)
1076 wait_info->type = VBLANK_TYPE_SW_FAKE;
1077 else if (private_vblank->offset == 0)
1078 wait_info->type = VBLANK_TYPE_HW;
1080 wait_info->type = VBLANK_TYPE_HW_SW;
1082 if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE)
1083 ret = _tdm_vblank_wait_SW(wait_info);
1085 ret = _tdm_vblank_wait_HW(wait_info);
1086 if (ret == TDM_ERROR_DPMS_OFF)
1087 ret = _tdm_vblank_wait_SW(wait_info);
1090 if (ret != TDM_ERROR_NONE) {
1091 LIST_DEL(&wait_info->link);
1092 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1094 tdm_display_lock(private_vblank->dpy);
1095 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1096 tdm_display_unlock(private_vblank->dpy);
1102 return TDM_ERROR_NONE;
1106 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1107 unsigned int sequence, tdm_vblank_handler func, void *user_data)
1109 tdm_private_vblank *private_vblank = vblank;
1110 unsigned int interval;
1112 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1113 TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1115 /* if the sequence of vblank reaches the max value, sequence can be 0. */
1117 if (private_vblank->last_seq == 0) {
1118 TDM_WRN("can't calculate interval with sequence(%u)", sequence);
1120 } else if (sequence > private_vblank->last_seq ||
1121 TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1122 double last, curr, seq_target;
1124 last = private_vblank->last_time;
1125 curr = tdm_helper_get_time();
1126 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1128 /* If target is old or too close(1ms) to current, we call the handler immediately.
1129 * 2ms? it seems too much.
1131 if (seq_target < curr) {
1132 func(vblank, TDM_ERROR_NONE, sequence,
1133 TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1135 return TDM_ERROR_NONE;
1136 } else if ((seq_target - curr) < 0.001) { /* 1ms */
1137 func(vblank, TDM_ERROR_NONE, sequence,
1138 TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1140 return TDM_ERROR_NONE;
1143 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1145 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1146 TDM_WRN("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1147 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1148 TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1150 return TDM_ERROR_NONE;
1153 return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1157 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1159 tdm_private_vblank *private_vblank = vblank;
1161 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1163 TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1165 if (private_vblank->add_front == add_front)
1166 return TDM_ERROR_NONE;
1168 private_vblank->add_front = add_front;
1170 return TDM_ERROR_NONE;
1174 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1176 tdm_private_vblank *private_vblank = vblank;
1178 TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1179 TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1181 private_vblank->resource = resource;
1183 return TDM_ERROR_NONE;
1187 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1189 tdm_private_vblank *v = NULL;
1191 TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1192 TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1193 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1194 TDM_SNPRINTF(reply, len, "name fps ignore offset fake process\n");
1195 TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1197 pthread_mutex_lock(&valid_list_lock);
1198 LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1199 struct wl_client *client = wl_resource_get_client(v->resource);
1200 const char *proc_name = NULL;
1204 wl_client_get_credentials(client, &pid, NULL, NULL);
1205 proc_name = tdm_server_get_client_name(pid);
1208 TDM_SNPRINTF(reply, len, "%-12s %u %u %d %u %s (pid: %u)\n",
1209 v->name, v->fps, v->ignore_global_fps, v->offset, v->enable_fake,
1210 (proc_name) ? proc_name : "Unknown", pid);
1212 pthread_mutex_unlock(&valid_list_lock);
1214 TDM_SNPRINTF(reply, len, "\n");