src/tdm_vblank.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   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>
  13  *
  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:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  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.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm.h"
  41 #include "tdm_private.h"
  42 #include "tdm_list.h"
  43
  44 /* CAUTION:
  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.
  50  */
  51
  52 /* TDM vblank
  53  * - aligned by HW vblank
  54  * - use a tdm_event_loop_source object only.
  55  */
  56
  57 /* We expact "(unsigned int)(0.0016667 / 0.0016667) = 1". But it becomes 0. */
  58 #define TDM_TIME_MARGIN     0.0000001
  59
  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 */
  63
  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.
  66  */
  67 #define TDM_VBLANK_SEQ_REACHED_MAX(seq, last_seq) \
  68         ((seq) < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < (last_seq))
  69
  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)
  74
  75 typedef enum {
  76         VBLANK_TYPE_SW,
  77         VBLANK_TYPE_SW_FAKE,
  78         VBLANK_TYPE_HW,
  79         VBLANK_TYPE_HW_SW,
  80 } tdm_vblank_wait_type;
  81
  82 typedef struct _tdm_vblank_wait_info tdm_vblank_wait_info;
  83
  84 typedef struct _tdm_private_vblank {
  85         struct list_head valid_link;
  86
  87         double stamp;
  88         pid_t owner_tid;
  89
  90         tdm_display *dpy;
  91         tdm_output *output;
  92         tdm_output_dpms dpms;
  93         unsigned int vrefresh;
  94
  95         unsigned int check_HW_or_SW;
  96         char name[TDM_NAME_LEN];
  97         unsigned int fps;
  98         int offset;
  99         unsigned int enable_fake;
 100         unsigned int ignore_global_fps;
 101
 102         double vblank_gap;
 103         unsigned int quotient;
 104
 105         unsigned int last_seq;
 106         double last_time;
 107
 108         unsigned int add_front;
 109         struct wl_resource *resource;
 110
 111         /* for HW */
 112         double HW_vblank_gap;
 113         struct list_head HW_wait_list;
 114
 115         /* for SW */
 116         tdm_event_loop_source *SW_timer;
 117         struct list_head SW_wait_list;
 118 } tdm_private_vblank;
 119
 120 struct _tdm_vblank_wait_info {
 121         struct list_head link;
 122         struct list_head valid_link;
 123
 124         double stamp;
 125
 126         double req_time;
 127         unsigned int interval;
 128
 129         tdm_vblank_handler func;
 130         void *user_data;
 131         tdm_private_vblank *private_vblank;
 132
 133         tdm_vblank_wait_type type;
 134
 135         double target_time;
 136         unsigned int target_seq;
 137 };
 138
 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.
 141  */
 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;
 148
 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,
 153                                                                          void *user_data);
 154
 155 #if 0
 156 static void
 157 _print_list(struct list_head *list)
 158 {
 159         tdm_vblank_wait_info *w = NULL;
 160
 161         LIST_FOR_EACH_ENTRY(w, list, link) {
 162                 printf(" %d", w->interval);
 163         }
 164         printf("\n");
 165 }
 166 #endif
 167
 168 static void
 169 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
 170 {
 171         pthread_mutex_lock(&valid_list_lock);
 172         LIST_ADDTAIL(valid_link, valid_list);
 173         pthread_mutex_unlock(&valid_list_lock);
 174 }
 175
 176 static void
 177 _tdm_vblank_valid_list_del(struct list_head *valid_link)
 178 {
 179         pthread_mutex_lock(&valid_list_lock);
 180         LIST_DEL(valid_link);
 181         pthread_mutex_unlock(&valid_list_lock);
 182 }
 183
 184 static inline tdm_private_vblank*
 185 _tdm_vblank_find(double vblank_stamp)
 186 {
 187         tdm_private_vblank *v = NULL;
 188
 189         if (!vblank_stamp)
 190                 return 0;
 191
 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);
 196                         return v;
 197                 }
 198         }
 199         pthread_mutex_unlock(&valid_list_lock);
 200
 201         return 0;
 202 }
 203
 204 static inline unsigned int
 205 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
 206 {
 207         tdm_vblank_wait_info *w = NULL;
 208
 209         if (!wait_info)
 210                 return 0;
 211
 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);
 216                         return 1;
 217                 }
 218         }
 219         pthread_mutex_unlock(&valid_list_lock);
 220
 221         return 0;
 222 }
 223
 224 static inline unsigned int
 225 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
 226 {
 227         tdm_vblank_wait_info *w = NULL;
 228
 229         if (!wait_info)
 230                 return 0;
 231
 232         LIST_FOR_EACH_ENTRY(w, list, link) {
 233                 if (w->stamp == wait_info->stamp)
 234                         return 1;
 235         }
 236
 237         return 0;
 238 }
 239
 240 static inline void
 241 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
 242 {
 243         tdm_vblank_wait_info *w = NULL;
 244         tdm_vblank_wait_info *found = NULL;
 245
 246         if (LIST_IS_EMPTY(list)) {
 247                 LIST_ADDTAIL(&wait_info->link, list);
 248                 return;
 249         }
 250
 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) {
 256                                 found = w;
 257                                 continue;
 258                         }
 259                 } else {
 260                         if (w->interval <= wait_info->interval) {
 261                                 found = w;
 262                                 continue;
 263                         }
 264                 }
 265         }
 266
 267         if (found)
 268                 LIST_ADD(&wait_info->link, &found->link);
 269         else
 270                 LIST_ADDTAIL(&wait_info->link, list->next);
 271 }
 272
 273 static void
 274 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
 275 {
 276         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 277
 278         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
 279                 LIST_DEL(&w->link);
 280                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
 281                 w->type = VBLANK_TYPE_SW_FAKE;
 282                 _tdm_vblank_wait_SW(w);
 283         }
 284 }
 285
 286 static void
 287 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
 288 {
 289         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 290
 291         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
 292                 LIST_DEL(&w->link);
 293                 _tdm_vblank_valid_list_del(&w->valid_link);
 294                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
 295
 296                 if (call_cb && w->func)
 297                         w->func(private_vblank, error, 0, 0, 0, w->user_data);
 298
 299                 free(w);
 300         }
 301 }
 302
 303 static void
 304 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
 305                                                          tdm_value value, void *user_data)
 306 {
 307         tdm_private_vblank *private_vblank = user_data;
 308
 309         TDM_RETURN_IF_FAIL(private_vblank != NULL);
 310
 311         switch (type) {
 312         case TDM_OUTPUT_CHANGE_DPMS:
 313                 if (private_vblank->dpms == value.u32)
 314                         break;
 315                 VDB("dpms %s", tdm_dpms_str(value.u32));
 316                 private_vblank->dpms = value.u32;
 317                 private_vblank->check_HW_or_SW = 1;
 318                 if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON) {
 319                         if (private_vblank->enable_fake)
 320                                 _tdm_vblank_change_to_SW(private_vblank);
 321                         else
 322                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
 323                 }
 324                 break;
 325         case TDM_OUTPUT_CHANGE_CONNECTION:
 326                 VDB("output %s", tdm_status_str(value.u32));
 327                 if (value.u32 == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 328                         _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
 329                 break;
 330         default:
 331                 break;
 332         }
 333 }
 334
 335 EXTERN tdm_error
 336 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
 337 {
 338         tdm_private_vblank *v = NULL;
 339
 340         TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
 341         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 342
 343         TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
 344
 345         pthread_mutex_lock(&valid_list_lock);
 346         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 347                 struct wl_client *client;
 348                 pid_t client_pid = 0;
 349
 350                 if (!v->resource)
 351                         continue;
 352
 353                 client = wl_resource_get_client(v->resource);
 354                 if (!client)
 355                         continue;
 356
 357                 wl_client_get_credentials(client, &client_pid, NULL, NULL);
 358
 359                 if (client_pid != pid)
 360                         continue;
 361
 362                 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
 363                         if (strncmp(v->name, name, TDM_NAME_LEN))
 364                                 continue;
 365                 }
 366
 367                 tdm_vblank_set_fps(v, fps);
 368
 369                 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
 370         }
 371         pthread_mutex_unlock(&valid_list_lock);
 372
 373         return TDM_ERROR_NONE;
 374 }
 375
 376 EXTERN tdm_error
 377 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
 378 {
 379         tdm_private_vblank *v = NULL;
 380
 381         if (enable)
 382                 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 383
 384         TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
 385
 386         pthread_mutex_lock(&valid_list_lock);
 387
 388         vblank_global_fps = (enable) ? fps : 0;
 389
 390         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 391                 /* skip if vblank is created in server side */
 392                 if (!v->resource)
 393                         continue;
 394
 395                 v->check_HW_or_SW = 1;
 396         }
 397         pthread_mutex_unlock(&valid_list_lock);
 398
 399         return TDM_ERROR_NONE;
 400 }
 401
 402 EXTERN tdm_vblank *
 403 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
 404 {
 405         tdm_private_vblank *private_vblank;
 406         const tdm_output_mode *mode = NULL;
 407         tdm_output_dpms dpms = TDM_OUTPUT_DPMS_ON;
 408         tdm_error ret;
 409
 410         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
 411         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
 412
 413         if (error)
 414                 *error = TDM_ERROR_NONE;
 415
 416         if (!vblank_list_inited) {
 417                 if (pthread_mutex_init(&valid_list_lock, NULL)) {
 418                         TDM_ERR("mutex init failed: %m");
 419                         if (error)
 420                                 *error = TDM_ERROR_OPERATION_FAILED;
 421                         return NULL;
 422                 }
 423                 LIST_INITHEAD(&valid_vblank_list);
 424                 LIST_INITHEAD(&valid_wait_list);
 425                 vblank_list_inited = 1;
 426         }
 427
 428         tdm_output_get_mode(output, &mode);
 429         if (!mode) {
 430                 if (error)
 431                         *error = TDM_ERROR_OPERATION_FAILED;
 432                 TDM_ERR("no mode");
 433                 return NULL;
 434         }
 435
 436         tdm_output_get_dpms(output, &dpms);
 437
 438         private_vblank = calloc(1, sizeof * private_vblank);
 439         if (!private_vblank) {
 440                 if (error)
 441                         *error = TDM_ERROR_OUT_OF_MEMORY;
 442                 VER("alloc failed");
 443                 return NULL;
 444         }
 445
 446         tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
 447
 448         private_vblank->stamp = ++stamp;
 449         private_vblank->owner_tid = syscall(SYS_gettid);
 450         private_vblank->dpy = dpy;
 451         private_vblank->output = output;
 452         private_vblank->dpms = dpms;
 453         private_vblank->vrefresh = mode->vrefresh;
 454         private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
 455
 456         private_vblank->check_HW_or_SW = 1;
 457         private_vblank->fps = mode->vrefresh;
 458
 459         strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
 460         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 461
 462         LIST_INITHEAD(&private_vblank->HW_wait_list);
 463         LIST_INITHEAD(&private_vblank->SW_wait_list);
 464
 465         _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
 466
 467         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 468                 VIN("created. vrefresh(%d) dpms(%d)",
 469                         private_vblank->vrefresh, private_vblank->dpms);
 470
 471         return (tdm_vblank *)private_vblank;
 472 }
 473
 474 EXTERN void
 475 tdm_vblank_destroy(tdm_vblank *vblank)
 476 {
 477         tdm_private_vblank *private_vblank = vblank;
 478         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 479
 480         if (!private_vblank)
 481                 return;
 482
 483         _tdm_vblank_valid_list_del(&private_vblank->valid_link);
 484
 485         if (private_vblank->SW_timer) {
 486                 tdm_display_lock(private_vblank->dpy);
 487                 tdm_event_loop_source_remove(private_vblank->SW_timer);
 488                 tdm_display_unlock(private_vblank->dpy);
 489         }
 490
 491         tdm_output_remove_change_handler(private_vblank->output,
 492                                                                          _tdm_vblank_cb_output_change, private_vblank);
 493
 494         _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
 495
 496         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
 497                 LIST_DEL(&w->link);
 498                 _tdm_vblank_valid_list_del(&w->valid_link);
 499                 free(w);
 500         }
 501
 502         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 503                 VIN("destroyed");
 504
 505         free(private_vblank);
 506 }
 507
 508 EXTERN tdm_error
 509 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
 510 {
 511         tdm_private_vblank *private_vblank = vblank;
 512
 513         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 514
 515         if (!name)
 516                 name = TDM_VBLANK_DEFAULT_NAME;
 517
 518         strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
 519         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 520
 521         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 522                 VIN("name(%s)", name);
 523
 524         return TDM_ERROR_NONE;
 525 }
 526
 527 EXTERN tdm_error
 528 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
 529 {
 530         tdm_private_vblank *private_vblank = vblank;
 531
 532         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 533         TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
 534
 535         *name = (const char*)private_vblank->name;
 536
 537         return TDM_ERROR_NONE;
 538 }
 539
 540 EXTERN tdm_error
 541 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
 542 {
 543         tdm_private_vblank *private_vblank = vblank;
 544
 545         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 546         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 547
 548         if (private_vblank->fps == fps)
 549                 return TDM_ERROR_NONE;
 550
 551         private_vblank->fps = fps;
 552         private_vblank->check_HW_or_SW = 1;
 553
 554         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 555                 VIN("fps(%d)", private_vblank->fps);
 556
 557         return TDM_ERROR_NONE;
 558 }
 559
 560 EXTERN tdm_error
 561 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
 562 {
 563         tdm_private_vblank *private_vblank = vblank;
 564
 565         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 566         TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
 567
 568         *fps = private_vblank->fps;
 569
 570         return TDM_ERROR_NONE;
 571 }
 572
 573 EXTERN tdm_error
 574 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
 575 {
 576         tdm_private_vblank *private_vblank = vblank;
 577
 578         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 579
 580         if (private_vblank->ignore_global_fps == ignore)
 581                 return TDM_ERROR_NONE;
 582
 583         private_vblank->ignore_global_fps = ignore;
 584         private_vblank->check_HW_or_SW = 1;
 585
 586         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 587                 VIN("ignore_global_fps(%d)", private_vblank->ignore_global_fps);
 588
 589         return TDM_ERROR_NONE;
 590 }
 591
 592 EXTERN tdm_error
 593 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
 594 {
 595         tdm_private_vblank *private_vblank = vblank;
 596
 597         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 598
 599         if (private_vblank->offset == offset)
 600                 return TDM_ERROR_NONE;
 601
 602         private_vblank->offset = offset;
 603         private_vblank->check_HW_or_SW = 1;
 604
 605         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 606                 VIN("offset(%d)", private_vblank->offset);
 607
 608         return TDM_ERROR_NONE;
 609 }
 610
 611 EXTERN tdm_error
 612 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
 613 {
 614         tdm_private_vblank *private_vblank = vblank;
 615
 616         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 617         TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
 618
 619         *offset = private_vblank->offset;
 620
 621         return TDM_ERROR_NONE;
 622 }
 623
 624 EXTERN tdm_error
 625 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
 626 {
 627         tdm_private_vblank *private_vblank = vblank;
 628
 629         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 630
 631         if (private_vblank->enable_fake == enable_fake)
 632                 return TDM_ERROR_NONE;
 633
 634         private_vblank->enable_fake = enable_fake;
 635
 636         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 637                 VIN("enable_fake(%d)", private_vblank->enable_fake);
 638
 639         return TDM_ERROR_NONE;
 640 }
 641
 642 EXTERN tdm_error
 643 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
 644 {
 645         tdm_private_vblank *private_vblank = vblank;
 646
 647         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 648         TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
 649
 650         *enable_fake = private_vblank->enable_fake;
 651
 652         return TDM_ERROR_NONE;
 653 }
 654
 655 static tdm_error
 656 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
 657 {
 658         tdm_vblank_wait_info *first_wait_info = NULL;
 659         double curr, target;
 660         int ms_delay;
 661         tdm_error ret;
 662
 663         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
 664                 VER("no wait_info");
 665                 return TDM_ERROR_OPERATION_FAILED;
 666         }
 667
 668         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
 669         curr = tdm_helper_get_time();
 670         target = first_wait_info->target_time;
 671
 672         /* ms_delay should be more that 1 */
 673         if (target < curr)
 674                 ms_delay = 1;
 675         else
 676                 ms_delay = ceil((target - curr) * 1000.0);
 677
 678         if (ms_delay < 1)
 679                 ms_delay = 1;
 680
 681         if (ms_delay > 5000)
 682                 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
 683         else if (tdm_debug_module & TDM_DEBUG_VBLANK)
 684                 VIN("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
 685
 686         tdm_display_lock(private_vblank->dpy);
 687
 688         if (!private_vblank->SW_timer) {
 689                 private_vblank->SW_timer =
 690                         tdm_event_loop_add_timer_handler(private_vblank->dpy,
 691                                                                                          _tdm_vblank_cb_vblank_SW,
 692                                                                                          private_vblank,
 693                                                                                          &ret);
 694                 if (!private_vblank->SW_timer) {
 695                         tdm_display_unlock(private_vblank->dpy);
 696                         VER("couldn't add timer");
 697                         return ret;
 698                 }
 699                 VIN("Use SW vblank");
 700         }
 701
 702         ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
 703         if (ret != TDM_ERROR_NONE) {
 704                 tdm_display_unlock(private_vblank->dpy);
 705                 VER("couldn't update timer");
 706                 return ret;
 707         }
 708
 709         tdm_display_unlock(private_vblank->dpy);
 710
 711         return TDM_ERROR_NONE;
 712 }
 713
 714 static void
 715 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
 716                                                  unsigned int tv_sec, unsigned int tv_usec,
 717                                                  void *user_data)
 718 {
 719         tdm_vblank_wait_info *wait_info = user_data;
 720         tdm_private_vblank *private_vblank;
 721
 722         if (!_tdm_vblank_check_valid_wait(wait_info)) {
 723                 TDM_DBG("can't find wait(%p) from valid_wait_list", wait_info);
 724                 return;
 725         }
 726
 727         private_vblank = wait_info->private_vblank;
 728         TDM_RETURN_IF_FAIL(private_vblank != NULL);
 729
 730         if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
 731                 VDB("can't find wait(%p)", wait_info);
 732                 return;
 733         }
 734
 735         if (wait_info->type == VBLANK_TYPE_HW_SW) {
 736                 tdm_error ret;
 737
 738                 LIST_DEL(&wait_info->link);
 739
 740                 /* kernel sends the wrong time of first vblank event. and the time of
 741                  * second vblank is correct.
 742                  */
 743                 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
 744                 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
 745
 746                 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
 747
 748                 ret = _tdm_vblank_sw_timer_update(private_vblank);
 749
 750                 /* wait_info will be freed in _tdm_vblank_cb_vblank_SW() */
 751                 if (ret == TDM_ERROR_NONE) {
 752                         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 753                                 VIN("wait(%p) SW timer", wait_info);
 754                         return;
 755                 }
 756
 757                 VWR("couldn't update sw timer");
 758         }
 759
 760         /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
 761          * We need to prohibit that last_time becomes zero because "last_time == 0" means
 762          * that a tdm_vblank object is just created and doesn't have the first vblank event.
 763          * If last_time becomes 0, it would make issue.
 764          */
 765         if (tv_sec == 0 && tv_usec == 0) {
 766                 double curr = tdm_helper_get_time();
 767                 tv_sec = TDM_TIME_SEC(curr);
 768                 tv_usec = TDM_TIME_USEC(curr);
 769         }
 770
 771         private_vblank->last_seq = wait_info->target_seq;
 772         private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
 773
 774         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 775                 VIN("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
 776
 777         if (wait_info->func)
 778                 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
 779                                                 tv_sec, tv_usec, wait_info->user_data);
 780
 781         LIST_DEL(&wait_info->link);
 782         _tdm_vblank_valid_list_del(&wait_info->valid_link);
 783         free(wait_info);
 784 }
 785
 786 static tdm_error
 787 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
 788 {
 789         tdm_private_vblank *private_vblank = wait_info->private_vblank;
 790         int hw_interval;
 791         tdm_error ret;
 792
 793         _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
 794
 795         hw_interval = wait_info->interval * private_vblank->quotient;
 796
 797         if (private_vblank->last_time == 0) {
 798                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
 799                 private_vblank->last_seq = 0;
 800                 private_vblank->last_time = tdm_helper_get_time();
 801
 802                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
 803                 wait_info->target_seq = 1;
 804                 if (tdm_debug_module & TDM_DEBUG_VBLANK)
 805                         VIN("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
 806                                 wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
 807         } else {
 808                 double last, prev, req, curr, target;
 809                 unsigned int skip;
 810
 811                 last = private_vblank->last_time;
 812                 req = wait_info->req_time;
 813
 814                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
 815                 prev = last + private_vblank->vblank_gap * skip;
 816
 817                 curr = tdm_helper_get_time();
 818                 target = last;
 819                 while (target < curr)
 820                         target += (private_vblank->vblank_gap * wait_info->interval);
 821
 822                 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
 823
 824                 wait_info->target_seq = private_vblank->last_seq;
 825                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
 826
 827                 if (hw_interval > 300)
 828                         VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
 829                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
 830                                 skip, hw_interval, wait_info->target_seq);
 831                 else if (tdm_debug_module & TDM_DEBUG_VBLANK)
 832                         VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
 833                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
 834                                 skip, hw_interval, wait_info->target_seq);
 835         }
 836
 837         if (private_vblank->add_front)
 838                 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
 839                                                                                            _tdm_vblank_cb_vblank_HW, wait_info);
 840         else
 841                 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
 842                                                                          _tdm_vblank_cb_vblank_HW, wait_info);
 843
 844         if (ret != TDM_ERROR_NONE) {
 845                 LIST_DEL(&wait_info->link);
 846                 return ret;
 847         }
 848
 849         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 850                 VIN("wait(%p) waiting", wait_info);
 851
 852         return TDM_ERROR_NONE;
 853 }
 854
 855 static tdm_error
 856 _tdm_vblank_cb_vblank_SW(void *user_data)
 857 {
 858         tdm_private_vblank *private_vblank = user_data;
 859
 860         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
 861
 862         return tdm_vblank_cb_vblank_SW(private_vblank, 0);
 863 }
 864
 865 INTERN tdm_error
 866 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp)
 867 {
 868         tdm_private_vblank *private_vblank;
 869         tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
 870
 871         TDM_RETURN_VAL_IF_FAIL(vblank || vblank_stamp > 0, TDM_ERROR_INVALID_PARAMETER);
 872
 873         if (vblank)
 874                 private_vblank = vblank;
 875         else {
 876                 private_vblank = _tdm_vblank_find(vblank_stamp);
 877                 if (!private_vblank) {
 878                         TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_stamp);
 879                         return TDM_ERROR_NONE;
 880                 }
 881         }
 882
 883         if (private_vblank->owner_tid != syscall(SYS_gettid)) {
 884                 tdm_thread_cb_vblank_sw vblank_sw;
 885                 tdm_private_display *private_display = private_vblank->dpy;
 886                 tdm_error ret;
 887
 888                 vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
 889                 vblank_sw.base.length = sizeof vblank_sw;
 890                 vblank_sw.vblank_stamp = private_vblank->stamp;
 891
 892                 ret = tdm_thread_send_cb(private_display->private_loop, &vblank_sw.base);
 893                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 894
 895                 return TDM_ERROR_NONE;
 896         }
 897
 898         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
 899                 VER("no wait_info");
 900                 return TDM_ERROR_OPERATION_FAILED;
 901         }
 902
 903         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
 904         TDM_RETURN_VAL_IF_FAIL(first_wait_info != NULL, TDM_ERROR_OPERATION_FAILED);
 905
 906         if (private_vblank->last_seq >= first_wait_info->target_seq)
 907                 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
 908
 909         private_vblank->last_seq = first_wait_info->target_seq;
 910         private_vblank->last_time = first_wait_info->target_time;
 911
 912         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 913                 VIN("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
 914
 915         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
 916                 if (w->target_time != first_wait_info->target_time)
 917                         break;
 918
 919                 LIST_DEL(&w->link);
 920                 _tdm_vblank_valid_list_del(&w->valid_link);
 921
 922                 if (w->func) {
 923                         tdm_display_unlock(private_vblank->dpy);
 924                         w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
 925                                         TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
 926                                         w->user_data);
 927                         tdm_display_lock(private_vblank->dpy);
 928                 }
 929
 930                 free(w);
 931         }
 932
 933         return TDM_ERROR_NONE;
 934 }
 935
 936 static tdm_error
 937 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
 938 {
 939         tdm_private_vblank *private_vblank = wait_info->private_vblank;
 940         tdm_error ret;
 941
 942         if (private_vblank->last_time == 0) {
 943                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
 944                 private_vblank->last_seq = 0;
 945                 private_vblank->last_time = tdm_helper_get_time();
 946
 947                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
 948                 wait_info->target_seq = 1;
 949                 wait_info->target_time = private_vblank->last_time + 0.001;
 950
 951                 if (tdm_debug_module & TDM_DEBUG_VBLANK)
 952                         VIN("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
 953                                 wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
 954         } else {
 955                 double last, prev, req, curr, target;
 956                 unsigned int skip;
 957
 958                 last = private_vblank->last_time;
 959                 req = wait_info->req_time;
 960
 961                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
 962                 prev = last + private_vblank->vblank_gap * skip;
 963
 964                 curr = tdm_helper_get_time();
 965                 target = prev + private_vblank->vblank_gap * wait_info->interval;
 966
 967                 while (target < curr)
 968                         target += private_vblank->vblank_gap;
 969
 970                 wait_info->target_seq = private_vblank->last_seq;
 971                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
 972
 973                 wait_info->target_time = target;
 974
 975                 if (tdm_debug_module & TDM_DEBUG_VBLANK)
 976                         VIN("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
 977                                 wait_info, last, req - last, prev - last, curr - last,
 978                                 target, target - last, skip, wait_info->target_seq);
 979         }
 980
 981         _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
 982
 983         ret = _tdm_vblank_sw_timer_update(private_vblank);
 984         if (ret != TDM_ERROR_NONE) {
 985                 LIST_DEL(&wait_info->link);
 986                 VER("couldn't update sw timer");
 987                 return ret;
 988         }
 989
 990         return TDM_ERROR_NONE;
 991 }
 992
 993 EXTERN tdm_error
 994 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
 995                                 unsigned int interval, tdm_vblank_handler func, void *user_data)
 996 {
 997         tdm_private_vblank *private_vblank = vblank;
 998         tdm_vblank_wait_info *wait_info;
 999         unsigned int fps;
1000         tdm_error ret;
1001
1002         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1003         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1004
1005         if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1006                 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1007                 return TDM_ERROR_BAD_REQUEST;
1008         }
1009
1010         if (private_vblank->dpms != TDM_OUTPUT_DPMS_ON && !private_vblank->enable_fake) {
1011                 VIN("can't wait a vblank because of DPMS off");
1012                 return TDM_ERROR_DPMS_OFF;
1013         }
1014
1015         wait_info = calloc(1, sizeof * wait_info);
1016         if (!wait_info) {
1017                 VER("alloc failed");
1018                 return TDM_ERROR_OUT_OF_MEMORY;
1019         }
1020
1021         /* set request time to current time if 0. This function seems to be called in server side. */
1022         if (req_sec == 0 && req_usec == 0) {
1023                 double curr = tdm_helper_get_time();
1024                 req_sec = TDM_TIME_SEC(curr);
1025                 req_usec = TDM_TIME_USEC(curr);
1026         }
1027
1028         LIST_INITHEAD(&wait_info->link);
1029
1030         _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1031
1032         wait_info->stamp = ++stamp;
1033         wait_info->req_time = TDM_TIME(req_sec, req_usec);
1034         wait_info->interval = interval;
1035         wait_info->func = func;
1036         wait_info->user_data = user_data;
1037         wait_info->private_vblank = private_vblank;
1038
1039         if (private_vblank->ignore_global_fps ||
1040                 vblank_global_fps == 0 ||
1041                 private_vblank->fps < vblank_global_fps)
1042                 fps = private_vblank->fps;
1043         else
1044                 fps = vblank_global_fps;
1045
1046         if (private_vblank->check_HW_or_SW) {
1047                 private_vblank->check_HW_or_SW = 0;
1048                 private_vblank->vblank_gap = 1.0 / fps;
1049                 private_vblank->quotient = private_vblank->vrefresh / fps;
1050         }
1051
1052         /* 1) if fps != factor of vrefresh, SW timer
1053          * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1054          * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1055          * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1056          * In case of 1), we really don't need to align with HW vblank.
1057          */
1058         if (private_vblank->vrefresh % fps)
1059                 wait_info->type = VBLANK_TYPE_SW;
1060         else if (private_vblank->dpms == TDM_OUTPUT_DPMS_OFF)
1061                 wait_info->type = VBLANK_TYPE_SW_FAKE;
1062         else if (private_vblank->offset == 0)
1063                 wait_info->type = VBLANK_TYPE_HW;
1064         else
1065                 wait_info->type = VBLANK_TYPE_HW_SW;
1066
1067         if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE)
1068                 ret = _tdm_vblank_wait_SW(wait_info);
1069         else {
1070                 ret = _tdm_vblank_wait_HW(wait_info);
1071                 if (ret == TDM_ERROR_DPMS_OFF)
1072                         ret = _tdm_vblank_wait_SW(wait_info);
1073         }
1074
1075         if (ret != TDM_ERROR_NONE) {
1076                 LIST_DEL(&wait_info->link);
1077                 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1078                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1079                 free(wait_info);
1080                 return ret;
1081         }
1082
1083         return TDM_ERROR_NONE;
1084 }
1085
1086 EXTERN tdm_error
1087 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1088                                         unsigned int sequence, tdm_vblank_handler func, void *user_data)
1089 {
1090         tdm_private_vblank *private_vblank = vblank;
1091         unsigned int interval;
1092
1093         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1094         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1095
1096         /* if the sequence of vblank reaches the max value, sequence can be 0. */
1097
1098         if (private_vblank->last_seq == 0) {
1099                 TDM_WRN("can't calculate interval with sequence(%u)", sequence);
1100                 interval = 1;
1101         } else if (sequence > private_vblank->last_seq ||
1102                            TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1103                 double last, curr, seq_target;
1104
1105                 last = private_vblank->last_time;
1106                 curr = tdm_helper_get_time();
1107                 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1108
1109                 /* If target is old or too close(1ms) to current, we call the handler immediately.
1110                  * 2ms? it seems too much.
1111                  */
1112                 if (seq_target < curr) {
1113                         func(vblank, TDM_ERROR_NONE, sequence,
1114                                  TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1115                                  user_data);
1116                         return TDM_ERROR_NONE;
1117                 } else if ((seq_target - curr) < 0.001) {  /* 1ms */
1118                         func(vblank, TDM_ERROR_NONE, sequence,
1119                                  TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1120                                  user_data);
1121                         return TDM_ERROR_NONE;
1122                 }
1123
1124                 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1125         } else {
1126                 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1127                 TDM_WRN("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1128                 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1129                          TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1130                          user_data);
1131                 return TDM_ERROR_NONE;
1132         }
1133
1134         return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1135 }
1136
1137 INTERN tdm_error
1138 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1139 {
1140         tdm_private_vblank *private_vblank = vblank;
1141
1142         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1143
1144         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1145
1146         if (private_vblank->add_front == add_front)
1147                 return TDM_ERROR_NONE;
1148
1149         private_vblank->add_front = add_front;
1150
1151         return TDM_ERROR_NONE;
1152 }
1153
1154 INTERN tdm_error
1155 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1156 {
1157         tdm_private_vblank *private_vblank = vblank;
1158
1159         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1160         TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1161
1162         private_vblank->resource = resource;
1163
1164         return TDM_ERROR_NONE;
1165 }
1166
1167 INTERN void
1168 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1169 {
1170         tdm_private_vblank *v = NULL;
1171
1172         TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1173         TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1174         TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1175         TDM_SNPRINTF(reply, len, "name         fps ignore offset fake process\n");
1176         TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1177
1178         pthread_mutex_lock(&valid_list_lock);
1179         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1180                 struct wl_client *client = wl_resource_get_client(v->resource);
1181                 const char *proc_name = NULL;
1182                 pid_t pid = 0;
1183
1184                 if (client) {
1185                         wl_client_get_credentials(client, &pid, NULL, NULL);
1186                         proc_name = tdm_server_get_client_name(pid);
1187                 }
1188
1189                 TDM_SNPRINTF(reply, len, "%-12s %u  %u     %d      %u    %s (pid: %u)\n",
1190                                          v->name, v->fps, v->ignore_global_fps, v->offset, v->enable_fake,
1191                                          (proc_name) ? proc_name : "Unknown", pid);
1192         }
1193         pthread_mutex_unlock(&valid_list_lock);
1194
1195         TDM_SNPRINTF(reply, len, "\n");
1196 }
1197