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 #define TDM_VBLANK_DEFAULT_VREFRESH    30
  58
  59 /* We expact "(unsigned int)(0.0016667 / 0.0016667) = 1". But it becomes 0. */
  60 #define TDM_TIME_MARGIN     0.0000001
  61
  62 #define TDM_VBLANK_UINT_MAX 4294967295U
  63 #define TDM_VBLANK_UINT_1Q  1073741823U     /* UINT_MAX / 4 */
  64 #define TDM_VBLANK_UINT_3Q  3221225471U     /* UINT_MAX / 4 * 3 */
  65
  66 /* (seq < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < last_seq) means
  67  * that the sequence value has reached the max value and started from 0 again.
  68  */
  69 #define TDM_VBLANK_SEQ_REACHED_MAX(seq, last_seq) \
  70         ((seq) < TDM_VBLANK_UINT_1Q && TDM_VBLANK_UINT_3Q < (last_seq))
  71
  72 #define VER(fmt, arg...)   TDM_ERR("[%p] "fmt, private_vblank, ##arg)
  73 #define VWR(fmt, arg...)   TDM_WRN("[%p] "fmt, private_vblank, ##arg)
  74 #define VIN(fmt, arg...)   do { if (tdm_debug_module & TDM_DEBUG_VBLANK) TDM_INFO("[%p] "fmt, private_vblank, ##arg); } while (0)
  75 #define VDB(fmt, arg...)   do { if (tdm_debug_module & TDM_DEBUG_VBLANK) TDM_DBG("[%p] "fmt, private_vblank, ##arg); } while (0)
  76
  77 typedef enum {
  78         VBLANK_TYPE_SW,
  79         VBLANK_TYPE_SW_FAKE,
  80         VBLANK_TYPE_HW,
  81         VBLANK_TYPE_HW_SW,
  82 } tdm_vblank_wait_type;
  83
  84 typedef enum {
  85         VBLANK_EVENT_TYPE_NONE,
  86         VBLANK_EVENT_TYPE_SW,
  87         VBLANK_EVENT_TYPE_HW,
  88 } tdm_vblank_event_type;
  89
  90 typedef struct _tdm_vblank_wait_info tdm_vblank_wait_info;
  91
  92 typedef struct _tdm_private_vblank {
  93         struct list_head valid_link;
  94
  95         double stamp;
  96         pid_t owner_tid;
  97
  98         tdm_display *dpy;
  99         tdm_output *output;
 100         tdm_output_conn_status connection;
 101         unsigned int vrefresh;
 102
 103         tdm_vblank_event_type last_type;
 104         unsigned int check_HW_or_SW;
 105         char name[TDM_NAME_LEN];
 106         unsigned int fps;
 107         unsigned int fps_changeable;
 108         int offset;
 109         unsigned int enable_fake;
 110         unsigned int ignore_global_fps;
 111
 112         double vblank_gap;
 113         unsigned int quotient;
 114
 115         unsigned int last_seq;
 116         double last_time;
 117
 118         unsigned int add_front;
 119         struct wl_resource *resource;
 120
 121         /* for HW */
 122         double HW_vblank_gap;
 123         struct list_head HW_wait_list;
 124
 125         /* for SW */
 126         tdm_event_loop_source *SW_timer;
 127         struct list_head SW_wait_list;
 128 } tdm_private_vblank;
 129
 130 struct _tdm_vblank_wait_info {
 131         struct list_head link;
 132         struct list_head valid_link;
 133
 134         double stamp;
 135
 136         double req_time;
 137         unsigned int interval;
 138
 139         tdm_vblank_handler func;
 140         void *user_data;
 141         tdm_private_vblank *private_vblank;
 142
 143         tdm_vblank_wait_type type;
 144
 145         double target_time;
 146         unsigned int target_seq;
 147 };
 148
 149 /* valid_vblank_list and valid_wait_list should be protected by valid_list_lock because
 150  * tdm_vblank can be used in multi-thread.
 151  */
 152 static pthread_mutex_t valid_list_lock;
 153 static struct list_head valid_vblank_list;
 154 static struct list_head valid_wait_list;
 155 static unsigned int vblank_list_inited;
 156 static unsigned int vblank_global_fps;
 157 static double stamp = 0;
 158
 159 static tdm_error _tdm_vblank_cb_vblank_SW(void *user_data);
 160 static tdm_error _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info);
 161 static void _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
 162                                                                          unsigned int tv_sec, unsigned int tv_usec,
 163                                                                          void *user_data);
 164
 165 #if 0
 166 static void
 167 _print_list(struct list_head *list)
 168 {
 169         tdm_vblank_wait_info *w = NULL;
 170
 171         LIST_FOR_EACH_ENTRY(w, list, link) {
 172                 printf(" %d", w->interval);
 173         }
 174         printf("\n");
 175 }
 176 #endif
 177
 178 static void
 179 _tdm_vblank_valid_list_add(struct list_head *valid_link, struct list_head *valid_list)
 180 {
 181         pthread_mutex_lock(&valid_list_lock);
 182         LIST_ADDTAIL(valid_link, valid_list);
 183         pthread_mutex_unlock(&valid_list_lock);
 184 }
 185
 186 static void
 187 _tdm_vblank_valid_list_del(struct list_head *valid_link)
 188 {
 189         pthread_mutex_lock(&valid_list_lock);
 190         LIST_DEL(valid_link);
 191         pthread_mutex_unlock(&valid_list_lock);
 192 }
 193
 194 static inline tdm_private_vblank*
 195 _tdm_vblank_find(double vblank_stamp)
 196 {
 197         tdm_private_vblank *v = NULL;
 198
 199         if (!vblank_stamp)
 200                 return 0;
 201
 202         pthread_mutex_lock(&valid_list_lock);
 203         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 204                 if (v->stamp == vblank_stamp) {
 205                         pthread_mutex_unlock(&valid_list_lock);
 206                         return v;
 207                 }
 208         }
 209         pthread_mutex_unlock(&valid_list_lock);
 210
 211         return 0;
 212 }
 213
 214 static inline unsigned int
 215 _tdm_vblank_check_valid_wait(tdm_vblank_wait_info *wait_info)
 216 {
 217         tdm_vblank_wait_info *w = NULL;
 218
 219         if (!wait_info)
 220                 return 0;
 221
 222         pthread_mutex_lock(&valid_list_lock);
 223         LIST_FOR_EACH_ENTRY(w, &valid_wait_list, valid_link) {
 224                 if (w == wait_info) {
 225                         pthread_mutex_unlock(&valid_list_lock);
 226                         return 1;
 227                 }
 228         }
 229         pthread_mutex_unlock(&valid_list_lock);
 230
 231         return 0;
 232 }
 233
 234 static inline unsigned int
 235 _tdm_vblank_find_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
 236 {
 237         tdm_vblank_wait_info *w = NULL;
 238
 239         if (!wait_info)
 240                 return 0;
 241
 242         LIST_FOR_EACH_ENTRY(w, list, link) {
 243                 if (w->stamp == wait_info->stamp)
 244                         return 1;
 245         }
 246
 247         return 0;
 248 }
 249
 250 static inline void
 251 _tdm_vblank_insert_wait(tdm_vblank_wait_info *wait_info, struct list_head *list)
 252 {
 253         tdm_vblank_wait_info *w = NULL;
 254         tdm_vblank_wait_info *found = NULL;
 255
 256         if (LIST_IS_EMPTY(list)) {
 257                 LIST_ADDTAIL(&wait_info->link, list);
 258                 return;
 259         }
 260
 261         LIST_FOR_EACH_ENTRY(w, list, link) {
 262                 if (wait_info->type == VBLANK_TYPE_SW) {
 263                         if (wait_info->target_time == 0)
 264                                 TDM_NEVER_GET_HERE();
 265                         if (w->target_time <= wait_info->target_time) {
 266                                 found = w;
 267                                 continue;
 268                         }
 269                 } else {
 270                         if (w->interval <= wait_info->interval) {
 271                                 found = w;
 272                                 continue;
 273                         }
 274                 }
 275         }
 276
 277         if (found)
 278                 LIST_ADD(&wait_info->link, &found->link);
 279         else
 280                 LIST_ADDTAIL(&wait_info->link, list->next);
 281 }
 282
 283 static void
 284 _tdm_vblank_change_to_SW(tdm_private_vblank *private_vblank)
 285 {
 286         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 287
 288         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
 289                 LIST_DEL(&w->link);
 290
 291                 tdm_display_lock(private_vblank->dpy);
 292                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
 293                 tdm_display_unlock(private_vblank->dpy);
 294
 295                 w->type = VBLANK_TYPE_SW_FAKE;
 296                 _tdm_vblank_wait_SW(w);
 297         }
 298 }
 299
 300 static void
 301 _tdm_vblank_free_HW_wait(tdm_private_vblank *private_vblank, tdm_error error, unsigned int call_cb)
 302 {
 303         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 304
 305         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->HW_wait_list, link) {
 306                 LIST_DEL(&w->link);
 307                 _tdm_vblank_valid_list_del(&w->valid_link);
 308
 309                 tdm_display_lock(private_vblank->dpy);
 310                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, w);
 311                 tdm_display_unlock(private_vblank->dpy);
 312
 313                 if (call_cb && w->func)
 314                         w->func(private_vblank, error, 0, 0, 0, w->user_data);
 315
 316                 free(w);
 317         }
 318 }
 319
 320 static void
 321 _tdm_vblank_update_output_info(tdm_private_vblank *private_vblank)
 322 {
 323         tdm_output *output = private_vblank->output;
 324         tdm_output_conn_status connection = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 325         unsigned int vrefresh = 0;
 326         tdm_error ret;
 327
 328         ret = tdm_output_get_conn_status(output, &connection);
 329         TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 330
 331         if (connection != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 332                 const tdm_output_mode *mode = NULL;
 333                 tdm_output_get_mode(output, &mode);
 334                 if (mode)
 335                         vrefresh = mode->vrefresh;
 336                 else
 337                         VWR("mode not setted!!!");
 338         }
 339
 340         if (vrefresh == 0) {
 341                 VWR("vrefresh can't be zero !!!");
 342                 vrefresh = TDM_VBLANK_DEFAULT_VREFRESH;
 343         }
 344
 345         private_vblank->connection = connection;
 346         private_vblank->vrefresh = vrefresh;
 347         private_vblank->HW_vblank_gap = 1.0 / private_vblank->vrefresh;
 348
 349         if (private_vblank->fps_changeable)
 350                 private_vblank->fps = vrefresh;
 351
 352         VIN("connection(%d) vrefresh(%d) fps(%d) fps_changeable(%d)",
 353                 private_vblank->connection,
 354                 private_vblank->vrefresh, private_vblank->fps, private_vblank->fps_changeable);
 355 }
 356
 357 static void
 358 _tdm_vblank_cb_output_change(tdm_output *output, tdm_output_change_type type,
 359                                                          tdm_value value, void *user_data)
 360 {
 361         tdm_private_vblank *private_vblank = user_data;
 362
 363         TDM_RETURN_IF_FAIL(private_vblank != NULL);
 364
 365         switch (type) {
 366         case TDM_OUTPUT_CHANGE_DPMS:
 367                 VIN("dpms %s", tdm_dpms_str(value.u32));
 368                 private_vblank->check_HW_or_SW = 1;
 369                 if (value.u32 != TDM_OUTPUT_DPMS_ON) {
 370                         if (private_vblank->enable_fake)
 371                                 _tdm_vblank_change_to_SW(private_vblank);
 372                         else
 373                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_DPMS_OFF, 1);
 374                 }
 375                 break;
 376         case TDM_OUTPUT_CHANGE_CONNECTION:
 377                 if (private_vblank->connection == value.u32)
 378                         break;
 379                 VIN("output %s", tdm_status_str(value.u32));
 380                 _tdm_vblank_update_output_info(private_vblank);
 381                 private_vblank->check_HW_or_SW = 1;
 382                 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 383                         if (private_vblank->enable_fake)
 384                                 _tdm_vblank_change_to_SW(private_vblank);
 385                         else
 386                                 _tdm_vblank_free_HW_wait(private_vblank, TDM_ERROR_OUTPUT_DISCONNECTED, 1);
 387                 }
 388                 break;
 389         default:
 390                 break;
 391         }
 392 }
 393
 394 EXTERN tdm_error
 395 tdm_vblank_set_client_vblank_fps(unsigned int pid, const char *name, unsigned int fps)
 396 {
 397         tdm_private_vblank *v = NULL;
 398
 399         TDM_RETURN_VAL_IF_FAIL(pid > 0, TDM_ERROR_INVALID_PARAMETER);
 400         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 401
 402         TDM_INFO("pid: %u, name: %s, fps: %d", pid, name, fps);
 403
 404         pthread_mutex_lock(&valid_list_lock);
 405         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 406                 struct wl_client *client;
 407                 pid_t client_pid = 0;
 408
 409                 if (!v->resource)
 410                         continue;
 411
 412                 client = wl_resource_get_client(v->resource);
 413                 if (!client)
 414                         continue;
 415
 416                 wl_client_get_credentials(client, &client_pid, NULL, NULL);
 417
 418                 if (client_pid != pid)
 419                         continue;
 420
 421                 if (name && strncmp(name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN)) {
 422                         if (strncmp(v->name, name, TDM_NAME_LEN))
 423                                 continue;
 424                 }
 425
 426                 tdm_vblank_set_fps(v, fps);
 427
 428                 TDM_INFO("(pid:%u) '%s' fps changed: %d", pid, v->name, fps);
 429         }
 430         pthread_mutex_unlock(&valid_list_lock);
 431
 432         return TDM_ERROR_NONE;
 433 }
 434
 435 EXTERN tdm_error
 436 tdm_vblank_enable_global_fps(unsigned int enable, unsigned int fps)
 437 {
 438         tdm_private_vblank *v = NULL;
 439
 440         if (enable)
 441                 TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 442
 443         TDM_INFO("global fps: %s fps(%d)", (enable) ? "enabled" : "disabled", fps);
 444
 445         pthread_mutex_lock(&valid_list_lock);
 446
 447         vblank_global_fps = (enable) ? fps : 0;
 448
 449         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
 450                 /* skip if vblank is created in server side */
 451                 if (!v->resource)
 452                         continue;
 453
 454                 v->check_HW_or_SW = 1;
 455         }
 456         pthread_mutex_unlock(&valid_list_lock);
 457
 458         return TDM_ERROR_NONE;
 459 }
 460
 461 EXTERN tdm_vblank *
 462 tdm_vblank_create(tdm_display *dpy, tdm_output *output, tdm_error *error)
 463 {
 464         tdm_private_vblank *private_vblank;
 465         tdm_error ret;
 466
 467         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(dpy != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
 468         TDM_RETURN_VAL_IF_FAIL_WITH_ERROR(output != NULL, TDM_ERROR_INVALID_PARAMETER, NULL);
 469
 470         if (error)
 471                 *error = TDM_ERROR_NONE;
 472
 473         if (!vblank_list_inited) {
 474                 if (pthread_mutex_init(&valid_list_lock, NULL)) {
 475                         TDM_ERR("mutex init failed: %m");
 476                         if (error)
 477                                 *error = TDM_ERROR_OPERATION_FAILED;
 478                         return NULL;
 479                 }
 480                 LIST_INITHEAD(&valid_vblank_list);
 481                 LIST_INITHEAD(&valid_wait_list);
 482                 vblank_list_inited = 1;
 483         }
 484
 485         private_vblank = calloc(1, sizeof * private_vblank);
 486         if (!private_vblank) {
 487                 if (error)
 488                         *error = TDM_ERROR_OUT_OF_MEMORY;
 489                 VER("alloc failed");
 490                 return NULL;
 491         }
 492
 493         tdm_output_add_change_handler(output, _tdm_vblank_cb_output_change, private_vblank);
 494
 495         private_vblank->stamp = ++stamp;
 496         private_vblank->owner_tid = syscall(SYS_gettid);
 497         private_vblank->dpy = dpy;
 498         private_vblank->output = output;
 499         private_vblank->check_HW_or_SW = 1;
 500         private_vblank->fps_changeable = 1;
 501
 502         _tdm_vblank_update_output_info(private_vblank);
 503
 504         strncpy(private_vblank->name, TDM_VBLANK_DEFAULT_NAME, TDM_NAME_LEN - 1);
 505         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 506
 507         LIST_INITHEAD(&private_vblank->HW_wait_list);
 508         LIST_INITHEAD(&private_vblank->SW_wait_list);
 509
 510         _tdm_vblank_valid_list_add(&private_vblank->valid_link, &valid_vblank_list);
 511
 512         VIN("created. vrefresh(%d) connection(%d)",
 513                 private_vblank->vrefresh, private_vblank->connection);
 514
 515         return (tdm_vblank *)private_vblank;
 516 }
 517
 518 EXTERN void
 519 tdm_vblank_destroy(tdm_vblank *vblank)
 520 {
 521         tdm_private_vblank *private_vblank = vblank;
 522         tdm_vblank_wait_info *w = NULL, *ww = NULL;
 523
 524         if (!private_vblank)
 525                 return;
 526
 527         _tdm_vblank_valid_list_del(&private_vblank->valid_link);
 528
 529         if (private_vblank->SW_timer) {
 530                 tdm_display_lock(private_vblank->dpy);
 531                 tdm_event_loop_source_remove(private_vblank->SW_timer);
 532                 tdm_display_unlock(private_vblank->dpy);
 533         }
 534
 535         tdm_output_remove_change_handler(private_vblank->output,
 536                                                                          _tdm_vblank_cb_output_change, private_vblank);
 537
 538         _tdm_vblank_free_HW_wait(private_vblank, 0, 0);
 539
 540         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
 541                 LIST_DEL(&w->link);
 542                 _tdm_vblank_valid_list_del(&w->valid_link);
 543                 free(w);
 544         }
 545
 546         VIN("destroyed");
 547
 548         free(private_vblank);
 549 }
 550
 551 EXTERN tdm_error
 552 tdm_vblank_set_name(tdm_vblank *vblank, const char *name)
 553 {
 554         tdm_private_vblank *private_vblank = vblank;
 555
 556         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 557
 558         if (!name)
 559                 name = TDM_VBLANK_DEFAULT_NAME;
 560
 561         strncpy(private_vblank->name, name, TDM_NAME_LEN - 1);
 562         private_vblank->name[TDM_NAME_LEN - 1] = '\0';
 563
 564         VIN("name(%s)", name);
 565
 566         return TDM_ERROR_NONE;
 567 }
 568
 569 EXTERN tdm_error
 570 tdm_vblank_get_name(tdm_vblank *vblank, const char **name)
 571 {
 572         tdm_private_vblank *private_vblank = vblank;
 573
 574         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 575         TDM_RETURN_VAL_IF_FAIL(name != NULL, TDM_ERROR_INVALID_PARAMETER);
 576
 577         *name = (const char*)private_vblank->name;
 578
 579         return TDM_ERROR_NONE;
 580 }
 581
 582 EXTERN tdm_error
 583 tdm_vblank_set_fps(tdm_vblank *vblank, unsigned int fps)
 584 {
 585         tdm_private_vblank *private_vblank = vblank;
 586
 587         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 588         TDM_RETURN_VAL_IF_FAIL(fps > 0, TDM_ERROR_INVALID_PARAMETER);
 589
 590         if (private_vblank->fps != fps || private_vblank->fps_changeable)
 591                 VIN("fps(%d) fps_changeable(0)", fps);
 592
 593         private_vblank->fps_changeable = 0;
 594
 595         if (private_vblank->fps == fps)
 596                 return TDM_ERROR_NONE;
 597
 598         private_vblank->fps = fps;
 599         private_vblank->check_HW_or_SW = 1;
 600
 601         return TDM_ERROR_NONE;
 602 }
 603
 604 EXTERN tdm_error
 605 tdm_vblank_get_fps(tdm_vblank *vblank, unsigned int *fps)
 606 {
 607         tdm_private_vblank *private_vblank = vblank;
 608
 609         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 610         TDM_RETURN_VAL_IF_FAIL(fps != NULL, TDM_ERROR_INVALID_PARAMETER);
 611
 612         *fps = private_vblank->fps;
 613
 614         return TDM_ERROR_NONE;
 615 }
 616
 617 EXTERN tdm_error
 618 tdm_vblank_ignore_global_fps(tdm_vblank *vblank, unsigned int ignore)
 619 {
 620         tdm_private_vblank *private_vblank = vblank;
 621
 622         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 623
 624         if (private_vblank->ignore_global_fps == ignore)
 625                 return TDM_ERROR_NONE;
 626
 627         private_vblank->ignore_global_fps = ignore;
 628         private_vblank->check_HW_or_SW = 1;
 629
 630         VIN("ignore_global_fps(%d)", private_vblank->ignore_global_fps);
 631
 632         return TDM_ERROR_NONE;
 633 }
 634
 635 EXTERN tdm_error
 636 tdm_vblank_set_offset(tdm_vblank *vblank, int offset)
 637 {
 638         tdm_private_vblank *private_vblank = vblank;
 639
 640         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 641
 642         if (private_vblank->offset == offset)
 643                 return TDM_ERROR_NONE;
 644
 645         private_vblank->offset = offset;
 646         private_vblank->check_HW_or_SW = 1;
 647
 648         VIN("offset(%d)", private_vblank->offset);
 649
 650         return TDM_ERROR_NONE;
 651 }
 652
 653 EXTERN tdm_error
 654 tdm_vblank_get_offset(tdm_vblank *vblank, int *offset)
 655 {
 656         tdm_private_vblank *private_vblank = vblank;
 657
 658         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 659         TDM_RETURN_VAL_IF_FAIL(offset != NULL, TDM_ERROR_INVALID_PARAMETER);
 660
 661         *offset = private_vblank->offset;
 662
 663         return TDM_ERROR_NONE;
 664 }
 665
 666 EXTERN tdm_error
 667 tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake)
 668 {
 669         tdm_private_vblank *private_vblank = vblank;
 670
 671         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 672
 673         if (private_vblank->enable_fake == enable_fake)
 674                 return TDM_ERROR_NONE;
 675
 676         private_vblank->enable_fake = enable_fake;
 677
 678         VIN("enable_fake(%d)", private_vblank->enable_fake);
 679
 680         return TDM_ERROR_NONE;
 681 }
 682
 683 EXTERN tdm_error
 684 tdm_vblank_get_enable_fake(tdm_vblank *vblank, unsigned int *enable_fake)
 685 {
 686         tdm_private_vblank *private_vblank = vblank;
 687
 688         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
 689         TDM_RETURN_VAL_IF_FAIL(enable_fake != NULL, TDM_ERROR_INVALID_PARAMETER);
 690
 691         *enable_fake = private_vblank->enable_fake;
 692
 693         return TDM_ERROR_NONE;
 694 }
 695
 696 static tdm_error
 697 _tdm_vblank_sw_timer_update(tdm_private_vblank *private_vblank)
 698 {
 699         tdm_vblank_wait_info *first_wait_info = NULL;
 700         double curr, target;
 701         int ms_delay;
 702         tdm_error ret;
 703
 704         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
 705                 VER("no wait_info");
 706                 return TDM_ERROR_OPERATION_FAILED;
 707         }
 708
 709         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
 710         curr = tdm_helper_get_time();
 711         target = first_wait_info->target_time;
 712
 713         /* ms_delay should be more that 1 */
 714         if (target < curr)
 715                 ms_delay = 1;
 716         else
 717                 ms_delay = ceil((target - curr) * 1000.0);
 718
 719         if (ms_delay < 1)
 720                 ms_delay = 1;
 721
 722         if (ms_delay > 5000)
 723                 VER("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
 724         else
 725                 VDB("wait(%p) curr(%.6f) target(%.6f) ms_delay(%d)", first_wait_info, curr, target, ms_delay);
 726
 727         tdm_display_lock(private_vblank->dpy);
 728
 729         if (!private_vblank->SW_timer) {
 730                 private_vblank->SW_timer =
 731                         tdm_event_loop_add_timer_handler(private_vblank->dpy,
 732                                                                                          _tdm_vblank_cb_vblank_SW,
 733                                                                                          private_vblank,
 734                                                                                          &ret);
 735                 if (!private_vblank->SW_timer) {
 736                         tdm_display_unlock(private_vblank->dpy);
 737                         VER("couldn't add timer");
 738                         return ret;
 739                 }
 740                 VIN("Create SW timer");
 741         }
 742
 743         ret = tdm_event_loop_source_timer_update(private_vblank->SW_timer, ms_delay);
 744         if (ret != TDM_ERROR_NONE) {
 745                 tdm_display_unlock(private_vblank->dpy);
 746                 VER("couldn't update timer");
 747                 return ret;
 748         }
 749
 750         tdm_display_unlock(private_vblank->dpy);
 751
 752         return TDM_ERROR_NONE;
 753 }
 754
 755 static void
 756 _tdm_vblank_cb_vblank_HW(tdm_output *output, unsigned int sequence,
 757                                                  unsigned int tv_sec, unsigned int tv_usec,
 758                                                  void *user_data)
 759 {
 760         tdm_vblank_wait_info *wait_info = user_data;
 761         tdm_private_vblank *private_vblank;
 762
 763         if (!_tdm_vblank_check_valid_wait(wait_info)) {
 764                 TDM_DBG("can't find wait(%p) from valid_wait_list", wait_info);
 765                 return;
 766         }
 767
 768         private_vblank = wait_info->private_vblank;
 769         TDM_RETURN_IF_FAIL(private_vblank != NULL);
 770
 771         if (!_tdm_vblank_find_wait(wait_info, &private_vblank->HW_wait_list)) {
 772                 VDB("can't find wait(%p)", wait_info);
 773                 return;
 774         }
 775
 776         if (wait_info->type == VBLANK_TYPE_HW_SW) {
 777                 tdm_error ret;
 778
 779                 LIST_DEL(&wait_info->link);
 780
 781                 /* kernel sends the wrong time of first vblank event. and the time of
 782                  * second vblank is correct.
 783                  */
 784                 wait_info->target_time = TDM_TIME(tv_sec, tv_usec);
 785                 wait_info->target_time += (((double)private_vblank->offset) / 1000.0);
 786
 787                 _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
 788
 789                 ret = _tdm_vblank_sw_timer_update(private_vblank);
 790
 791                 /* wait_info will be freed in _tdm_vblank_cb_vblank_SW() */
 792                 if (ret == TDM_ERROR_NONE) {
 793                         VDB("wait(%p) SW timer", wait_info);
 794                         return;
 795                 }
 796
 797                 VWR("couldn't update sw timer");
 798         }
 799
 800         LIST_DEL(&wait_info->link);
 801         _tdm_vblank_valid_list_del(&wait_info->valid_link);
 802
 803         /* tv_sec & tv_usec shouldn't be zero. But sometimes they are zero in some hardware.
 804          * We need to prohibit that last_time becomes zero because "last_time == 0" means
 805          * that a tdm_vblank object is just created and doesn't have the first vblank event.
 806          * If last_time becomes 0, it would make issue.
 807          */
 808         if (tv_sec == 0 && tv_usec == 0) {
 809                 double curr = tdm_helper_get_time();
 810                 tv_sec = TDM_TIME_SEC(curr);
 811                 tv_usec = TDM_TIME_USEC(curr);
 812         }
 813
 814         private_vblank->last_seq = wait_info->target_seq;
 815         private_vblank->last_time = TDM_TIME(tv_sec, tv_usec);
 816
 817         VDB("wait(%p) last(%.6f) sequence(%u) done", wait_info, private_vblank->last_time, wait_info->target_seq);
 818
 819         if (wait_info->func)
 820                 wait_info->func(private_vblank, TDM_ERROR_NONE, wait_info->target_seq,
 821                                                 tv_sec, tv_usec, wait_info->user_data);
 822
 823         free(wait_info);
 824 }
 825
 826 static tdm_error
 827 _tdm_vblank_wait_HW(tdm_vblank_wait_info *wait_info)
 828 {
 829         tdm_private_vblank *private_vblank = wait_info->private_vblank;
 830         int hw_interval;
 831         tdm_error ret;
 832
 833         if (private_vblank->last_type != VBLANK_EVENT_TYPE_HW) {
 834                 VIN("Use HW vblank");
 835                 private_vblank->last_type = VBLANK_EVENT_TYPE_HW;
 836         }
 837
 838         _tdm_vblank_insert_wait(wait_info, &private_vblank->HW_wait_list);
 839
 840         hw_interval = wait_info->interval * private_vblank->quotient;
 841
 842         if (private_vblank->last_time == 0) {
 843                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
 844                 private_vblank->last_seq = 0;
 845                 private_vblank->last_time = tdm_helper_get_time();
 846
 847                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
 848                 wait_info->target_seq = 1;
 849
 850                 VDB("wait(%p) last(%.6f) hw_itvl(%d) targ_seq(%u)",
 851                         wait_info, private_vblank->last_time, hw_interval, wait_info->target_seq);
 852         } else {
 853                 double last, prev, req, curr, target;
 854                 unsigned int skip;
 855
 856                 last = private_vblank->last_time;
 857                 req = wait_info->req_time;
 858
 859                 /* make sure that req time is bigger than last. */
 860                 if (req < last)
 861                         req = last;
 862
 863                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
 864                 prev = last + private_vblank->vblank_gap * skip;
 865
 866                 curr = tdm_helper_get_time();
 867                 target = last;
 868                 while (target < curr)
 869                         target += (private_vblank->vblank_gap * wait_info->interval);
 870
 871                 hw_interval = (unsigned int)((target - curr) / private_vblank->HW_vblank_gap + TDM_TIME_MARGIN) + 1;
 872
 873                 wait_info->target_seq = private_vblank->last_seq;
 874                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
 875
 876                 if (hw_interval > 300)
 877                         VER("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
 878                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
 879                                 skip, hw_interval, wait_info->target_seq);
 880                 else
 881                         VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) hw_itvl(%d) targ_seq(%u)",
 882                                 wait_info, last, req - last, prev - last, curr - last, target, target - last,
 883                                 skip, hw_interval, wait_info->target_seq);
 884         }
 885
 886         if (private_vblank->add_front)
 887                 ret = tdm_output_wait_vblank_add_front(private_vblank->output, hw_interval, 0,
 888                                                                                            _tdm_vblank_cb_vblank_HW, wait_info);
 889         else
 890                 ret = tdm_output_wait_vblank(private_vblank->output, hw_interval, 0,
 891                                                                          _tdm_vblank_cb_vblank_HW, wait_info);
 892
 893         if (ret != TDM_ERROR_NONE) {
 894                 LIST_DEL(&wait_info->link);
 895                 return ret;
 896         }
 897
 898         VDB("wait(%p) waiting", wait_info);
 899
 900         return TDM_ERROR_NONE;
 901 }
 902
 903 static tdm_error
 904 _tdm_vblank_cb_vblank_SW(void *user_data)
 905 {
 906         tdm_private_vblank *private_vblank = user_data;
 907
 908         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_OPERATION_FAILED);
 909
 910         return tdm_vblank_cb_vblank_SW(private_vblank, 0);
 911 }
 912
 913 INTERN tdm_error
 914 tdm_vblank_cb_vblank_SW(tdm_vblank *vblank, double vblank_stamp)
 915 {
 916         tdm_private_vblank *private_vblank;
 917         tdm_vblank_wait_info *first_wait_info = NULL, *w = NULL, *ww = NULL;
 918
 919         TDM_RETURN_VAL_IF_FAIL(vblank || vblank_stamp > 0, TDM_ERROR_INVALID_PARAMETER);
 920
 921         if (vblank)
 922                 private_vblank = vblank;
 923         else {
 924                 private_vblank = _tdm_vblank_find(vblank_stamp);
 925                 if (!private_vblank) {
 926                         TDM_DBG("can't find vblank(%.0f) from valid_list", vblank_stamp);
 927                         return TDM_ERROR_NONE;
 928                 }
 929         }
 930
 931         if (private_vblank->owner_tid != syscall(SYS_gettid)) {
 932                 tdm_thread_cb_vblank_sw vblank_sw;
 933                 tdm_private_display *private_display = private_vblank->dpy;
 934                 tdm_error ret;
 935
 936                 vblank_sw.base.type = TDM_THREAD_CB_VBLANK_SW;
 937                 vblank_sw.base.length = sizeof vblank_sw;
 938                 vblank_sw.vblank_stamp = private_vblank->stamp;
 939
 940                 ret = tdm_thread_send_cb(private_display->private_loop, &vblank_sw.base);
 941                 TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 942
 943                 return TDM_ERROR_NONE;
 944         }
 945
 946         if (LIST_IS_EMPTY(&private_vblank->SW_wait_list)) {
 947                 VER("no wait_info");
 948                 return TDM_ERROR_OPERATION_FAILED;
 949         }
 950
 951         first_wait_info = container_of(private_vblank->SW_wait_list.next, first_wait_info, link);
 952         TDM_RETURN_VAL_IF_FAIL(first_wait_info != NULL, TDM_ERROR_OPERATION_FAILED);
 953
 954         if (private_vblank->last_seq >= first_wait_info->target_seq)
 955                 TDM_ERR("last_seq(%u) target_seq(%u)", private_vblank->last_seq, first_wait_info->target_seq);
 956
 957         private_vblank->last_seq = first_wait_info->target_seq;
 958         private_vblank->last_time = first_wait_info->target_time;
 959
 960         VDB("wait(%p) last(%.6f) sequence(%u) done", first_wait_info, private_vblank->last_time, first_wait_info->target_seq);
 961
 962         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_vblank->SW_wait_list, link) {
 963                 if (w->target_time != first_wait_info->target_time)
 964                         break;
 965
 966                 LIST_DEL(&w->link);
 967                 _tdm_vblank_valid_list_del(&w->valid_link);
 968
 969                 if (w->func) {
 970                         tdm_display_unlock(private_vblank->dpy);
 971                         w->func(private_vblank, TDM_ERROR_NONE, w->target_seq,
 972                                         TDM_TIME_SEC(w->target_time), TDM_TIME_USEC(w->target_time),
 973                                         w->user_data);
 974                         tdm_display_lock(private_vblank->dpy);
 975                 }
 976
 977                 free(w);
 978         }
 979
 980         return TDM_ERROR_NONE;
 981 }
 982
 983 static tdm_error
 984 _tdm_vblank_wait_SW(tdm_vblank_wait_info *wait_info)
 985 {
 986         tdm_private_vblank *private_vblank = wait_info->private_vblank;
 987         tdm_error ret;
 988
 989         if (private_vblank->last_type != VBLANK_EVENT_TYPE_SW) {
 990                 VIN("Use SW vblank");
 991                 private_vblank->last_type = VBLANK_EVENT_TYPE_SW;
 992         }
 993
 994         if (private_vblank->last_time == 0) {
 995                 /* SW vblank starts from now. SW vblank doesn't need to be aligned with HW vblank. */
 996                 private_vblank->last_seq = 0;
 997                 private_vblank->last_time = tdm_helper_get_time();
 998
 999                 /* +1 ms to call the handler ASAP at the first. no matter for SW timer. */
1000                 wait_info->target_seq = 1;
1001                 wait_info->target_time = private_vblank->last_time + 0.001;
1002
1003                 VDB("wait(%p) last(%.6f) target(%.6f) target sequence(%u)",
1004                         wait_info, private_vblank->last_time, wait_info->target_time, wait_info->target_seq);
1005         } else {
1006                 double last, prev, req, curr, target;
1007                 unsigned int skip;
1008
1009                 last = private_vblank->last_time;
1010                 req = wait_info->req_time;
1011
1012                 /* make sure that req time is bigger than last. */
1013                 if (req < last)
1014                         req = last;
1015
1016                 skip = (unsigned int)((req - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1017                 prev = last + private_vblank->vblank_gap * skip;
1018
1019                 curr = tdm_helper_get_time();
1020                 target = prev + private_vblank->vblank_gap * wait_info->interval;
1021
1022                 while (target < curr)
1023                         target += private_vblank->vblank_gap;
1024
1025                 wait_info->target_seq = private_vblank->last_seq;
1026                 wait_info->target_seq += (unsigned int)((target - last) / private_vblank->vblank_gap + TDM_TIME_MARGIN);
1027
1028                 wait_info->target_time = target;
1029
1030                 VDB("wait(%p) last(%.6f) req(%.6f) prev(%.6f) curr(%.6f) targ(%.6f,%.6f) skip(%u) targ_seq(%u)",
1031                         wait_info, last, req - last, prev - last, curr - last,
1032                         target, target - last, skip, wait_info->target_seq);
1033         }
1034
1035         _tdm_vblank_insert_wait(wait_info, &private_vblank->SW_wait_list);
1036
1037         ret = _tdm_vblank_sw_timer_update(private_vblank);
1038         if (ret != TDM_ERROR_NONE) {
1039                 LIST_DEL(&wait_info->link);
1040                 VER("couldn't update sw timer");
1041                 return ret;
1042         }
1043
1044         return TDM_ERROR_NONE;
1045 }
1046
1047 EXTERN tdm_error
1048 tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1049                                 unsigned int interval, tdm_vblank_handler func, void *user_data)
1050 {
1051         tdm_private_vblank *private_vblank = vblank;
1052         tdm_vblank_wait_info *wait_info;
1053         tdm_output_dpms dpms = TDM_OUTPUT_DPMS_OFF;
1054         unsigned int fps;
1055         tdm_error ret;
1056
1057         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1058         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1059
1060         if (private_vblank->owner_tid != syscall(SYS_gettid)) {
1061                 TDM_ERR("SHOULD be called in the owner thread(%d)", (int)private_vblank->owner_tid);
1062                 return TDM_ERROR_BAD_REQUEST;
1063         }
1064
1065         tdm_output_get_dpms(private_vblank->output, &dpms);
1066
1067         if (!private_vblank->enable_fake) {
1068                 if (private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
1069                         VER("can't wait a vblank: output disconnected");
1070                         return TDM_ERROR_OUTPUT_DISCONNECTED;
1071                 }
1072                 if (dpms != TDM_OUTPUT_DPMS_ON) {
1073                         VER("can't wait a vblank: DPMS off");
1074                         return TDM_ERROR_DPMS_OFF;
1075                 }
1076         }
1077
1078         wait_info = calloc(1, sizeof * wait_info);
1079         if (!wait_info) {
1080                 VER("alloc failed");
1081                 return TDM_ERROR_OUT_OF_MEMORY;
1082         }
1083
1084         /* set request time to current time if 0. This function seems to be called in server side. */
1085         if (req_sec == 0 && req_usec == 0) {
1086                 double curr = tdm_helper_get_time();
1087                 req_sec = TDM_TIME_SEC(curr);
1088                 req_usec = TDM_TIME_USEC(curr);
1089         }
1090
1091         LIST_INITHEAD(&wait_info->link);
1092
1093         _tdm_vblank_valid_list_add(&wait_info->valid_link, &valid_wait_list);
1094
1095         wait_info->stamp = ++stamp;
1096         wait_info->req_time = TDM_TIME(req_sec, req_usec);
1097         wait_info->interval = interval;
1098         wait_info->func = func;
1099         wait_info->user_data = user_data;
1100         wait_info->private_vblank = private_vblank;
1101
1102         if (private_vblank->ignore_global_fps ||
1103                 vblank_global_fps == 0 ||
1104                 private_vblank->fps < vblank_global_fps)
1105                 fps = private_vblank->fps;
1106         else
1107                 fps = vblank_global_fps;
1108
1109         if (private_vblank->check_HW_or_SW) {
1110                 private_vblank->check_HW_or_SW = 0;
1111                 private_vblank->vblank_gap = 1.0 / fps;
1112                 private_vblank->quotient = private_vblank->vrefresh / fps;
1113         }
1114
1115         /* 1) if fps != factor of vrefresh, SW timer
1116          * 2) if fps == factor of vrefresh && dpms == off, SW timer (Fake HW vblank)
1117          * 2) if fps == factor of vrefresh && dpms == on && offset == 0, HW vblank
1118          * 3) if fps == factor of vrefresh && dpms == on && offset != 0, HW vblank + SW timer
1119          * In case of 1), we really don't need to align with HW vblank.
1120          */
1121         if (private_vblank->vrefresh % fps)
1122                 wait_info->type = VBLANK_TYPE_SW;
1123         else if (dpms == TDM_OUTPUT_DPMS_OFF ||
1124                          private_vblank->connection == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
1125                 wait_info->type = VBLANK_TYPE_SW_FAKE;
1126         else if (private_vblank->offset == 0)
1127                 wait_info->type = VBLANK_TYPE_HW;
1128         else
1129                 wait_info->type = VBLANK_TYPE_HW_SW;
1130
1131         if (wait_info->type == VBLANK_TYPE_SW || wait_info->type == VBLANK_TYPE_SW_FAKE)
1132                 ret = _tdm_vblank_wait_SW(wait_info);
1133         else {
1134                 ret = _tdm_vblank_wait_HW(wait_info);
1135                 if (ret == TDM_ERROR_OUTPUT_DISCONNECTED || ret == TDM_ERROR_DPMS_OFF)
1136                         ret = _tdm_vblank_wait_SW(wait_info);
1137         }
1138
1139         if (ret != TDM_ERROR_NONE) {
1140                 LIST_DEL(&wait_info->link);
1141                 _tdm_vblank_valid_list_del(&wait_info->valid_link);
1142
1143                 tdm_display_lock(private_vblank->dpy);
1144                 tdm_output_remove_vblank_handler_internal(private_vblank->output, _tdm_vblank_cb_vblank_HW, wait_info);
1145                 tdm_display_unlock(private_vblank->dpy);
1146
1147                 free(wait_info);
1148                 return ret;
1149         }
1150
1151         return TDM_ERROR_NONE;
1152 }
1153
1154 EXTERN tdm_error
1155 tdm_vblank_wait_seq(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec,
1156                                         unsigned int sequence, tdm_vblank_handler func, void *user_data)
1157 {
1158         tdm_private_vblank *private_vblank = vblank;
1159         unsigned int interval;
1160
1161         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1162         TDM_RETURN_VAL_IF_FAIL(func != NULL, TDM_ERROR_INVALID_PARAMETER);
1163
1164         /* if the sequence of vblank reaches the max value, sequence can be 0. */
1165
1166         if (private_vblank->last_seq == 0) {
1167                 TDM_WRN("can't calculate interval with sequence(%u)", sequence);
1168                 interval = 1;
1169         } else if (sequence > private_vblank->last_seq ||
1170                            TDM_VBLANK_SEQ_REACHED_MAX(sequence, private_vblank->last_seq)) {
1171                 double last, curr, seq_target;
1172
1173                 last = private_vblank->last_time;
1174                 curr = tdm_helper_get_time();
1175                 seq_target = last + private_vblank->vblank_gap * (sequence - private_vblank->last_seq);
1176
1177                 /* If target is old or too close(1ms) to current, we call the handler immediately.
1178                  * 2ms? it seems too much.
1179                  */
1180                 if (seq_target < curr) {
1181                         func(vblank, TDM_ERROR_NONE, sequence,
1182                                  TDM_TIME_SEC(seq_target), TDM_TIME_USEC(seq_target),
1183                                  user_data);
1184                         return TDM_ERROR_NONE;
1185                 } else if ((seq_target - curr) < 0.001) {  /* 1ms */
1186                         func(vblank, TDM_ERROR_NONE, sequence,
1187                                  TDM_TIME_SEC(curr), TDM_TIME_USEC(curr),
1188                                  user_data);
1189                         return TDM_ERROR_NONE;
1190                 }
1191
1192                 interval = (unsigned int)((seq_target - curr) / private_vblank->vblank_gap + TDM_TIME_MARGIN) + 1;
1193         } else {
1194                 /* this seems error. But we handle this like normal to avoid the unexpected error in cliend side */
1195                 TDM_WRN("sequence(%u) should be over the last sequence(%u)", sequence, private_vblank->last_seq);
1196                 func(vblank, TDM_ERROR_NONE, private_vblank->last_seq,
1197                          TDM_TIME_SEC(private_vblank->last_time), TDM_TIME_USEC(private_vblank->last_time),
1198                          user_data);
1199                 return TDM_ERROR_NONE;
1200         }
1201
1202         return tdm_vblank_wait(vblank, req_sec, req_usec, interval, func, user_data);
1203 }
1204
1205 INTERN tdm_error
1206 tdm_vblank_set_add_front(tdm_vblank *vblank, unsigned int add_front)
1207 {
1208         tdm_private_vblank *private_vblank = vblank;
1209
1210         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1211
1212         TDM_RETURN_VAL_IF_FAIL(TDM_MUTEX_IS_LOCKED(), TDM_ERROR_OPERATION_FAILED);
1213
1214         if (private_vblank->add_front == add_front)
1215                 return TDM_ERROR_NONE;
1216
1217         private_vblank->add_front = add_front;
1218
1219         return TDM_ERROR_NONE;
1220 }
1221
1222 INTERN tdm_error
1223 tdm_vblank_set_resource(tdm_vblank *vblank, struct wl_resource *resource)
1224 {
1225         tdm_private_vblank *private_vblank = vblank;
1226
1227         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1228         TDM_RETURN_VAL_IF_FAIL(private_vblank->resource == NULL, TDM_ERROR_OPERATION_FAILED);
1229
1230         private_vblank->resource = resource;
1231
1232         return TDM_ERROR_NONE;
1233 }
1234
1235 INTERN double
1236 tdm_vblank_get_stamp(tdm_vblank *vblank)
1237 {
1238         tdm_private_vblank *private_vblank = vblank;
1239
1240         TDM_RETURN_VAL_IF_FAIL(private_vblank != NULL, TDM_ERROR_INVALID_PARAMETER);
1241
1242         return private_vblank->stamp;
1243 }
1244
1245 INTERN void
1246 tdm_vblank_get_vblank_list_information(tdm_display *dpy, char *reply, int *len)
1247 {
1248         tdm_private_vblank *v = NULL;
1249
1250         TDM_SNPRINTF(reply, len, "[Client Vblank List]\n");
1251         TDM_SNPRINTF(reply, len, "* global fps: %u\n", vblank_global_fps);
1252         TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1253         TDM_SNPRINTF(reply, len, "name         fps ignore offset fake process\n");
1254         TDM_SNPRINTF(reply, len, "---------------------------------------------------------------\n");
1255
1256         pthread_mutex_lock(&valid_list_lock);
1257         LIST_FOR_EACH_ENTRY(v, &valid_vblank_list, valid_link) {
1258                 const char *proc_name = NULL;
1259                 pid_t pid = 0;
1260
1261                 if (v->resource) {
1262                         struct wl_client *client = wl_resource_get_client(v->resource);
1263                         if (client) {
1264                                 wl_client_get_credentials(client, &pid, NULL, NULL);
1265                                 proc_name = tdm_server_get_client_name(pid);
1266                         }
1267                 }
1268
1269                 TDM_SNPRINTF(reply, len, "%-12s %u  %u     %d      %u    %s (pid: %u)\n",
1270                                          v->name, v->fps, v->ignore_global_fps, v->offset, v->enable_fake,
1271                                          (proc_name) ? proc_name : "Unknown", pid);
1272         }
1273         pthread_mutex_unlock(&valid_list_lock);
1274
1275         TDM_SNPRINTF(reply, len, "\n");
1276 }
1277