git.sesse.net Git - vlc/blob - src/video_output/video_output.c

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2007 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *          Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  28  *****************************************************************************/
  29
  30 /*****************************************************************************
  31  * Preamble
  32  *****************************************************************************/
  33 #ifdef HAVE_CONFIG_H
  34 # include "config.h"
  35 #endif
  36
  37 #include <vlc_common.h>
  38
  39 #include <stdlib.h>                                                /* free() */
  40 #include <string.h>
  41 #include <assert.h>
  42
  43 #include <vlc_vout.h>
  44
  45 #include <vlc_filter.h>
  46 #include <vlc_vout_osd.h>
  47
  48 #include <libvlc.h>
  49 #include "vout_internal.h"
  50 #include "interlacing.h"
  51 #include "postprocessing.h"
  52 #include "display.h"
  53
  54 /*****************************************************************************
  55  * Local prototypes
  56  *****************************************************************************/
  57 static void *Thread(void *);
  58 static void VoutDestructor(vlc_object_t *);
  59
  60 /* Maximum delay between 2 displayed pictures.
  61  * XXX it is needed for now but should be removed in the long term.
  62  */
  63 #define VOUT_REDISPLAY_DELAY (INT64_C(80000))
  64
  65 /**
  66  * Late pictures having a delay higher than this value are thrashed.
  67  */
  68 #define VOUT_DISPLAY_LATE_THRESHOLD (INT64_C(20000))
  69
  70 /* Better be in advance when awakening than late... */
  71 #define VOUT_MWAIT_TOLERANCE (INT64_C(4000))
  72
  73 /* */
  74 static int VoutValidateFormat(video_format_t *dst,
  75                               const video_format_t *src)
  76 {
  77     if (src->i_width <= 0 || src->i_height <= 0)
  78         return VLC_EGENERIC;
  79     if (src->i_sar_num <= 0 || src->i_sar_den <= 0)
  80         return VLC_EGENERIC;
  81
  82     /* */
  83     video_format_Copy(dst, src);
  84     dst->i_chroma = vlc_fourcc_GetCodec(VIDEO_ES, src->i_chroma);
  85     vlc_ureduce( &dst->i_sar_num, &dst->i_sar_den,
  86                  src->i_sar_num,  src->i_sar_den, 50000 );
  87     if (dst->i_sar_num <= 0 || dst->i_sar_den <= 0) {
  88         dst->i_sar_num = 1;
  89         dst->i_sar_den = 1;
  90     }
  91     video_format_FixRgb(dst);
  92     return VLC_SUCCESS;
  93 }
  94
  95 static vout_thread_t *VoutCreate(vlc_object_t *object,
  96                                  const vout_configuration_t *cfg)
  97 {
  98     video_format_t original;
  99     if (VoutValidateFormat(&original, cfg->fmt))
 100         return NULL;
 101
 102     /* Allocate descriptor */
 103     vout_thread_t *vout = vlc_custom_create(object,
 104                                             sizeof(*vout) + sizeof(*vout->p),
 105                                             VLC_OBJECT_VOUT, "video output");
 106     if (!vout) {
 107         video_format_Clean(&original);
 108         return NULL;
 109     }
 110
 111     /* */
 112     vout->p = (vout_thread_sys_t*)&vout[1];
 113
 114     vout->p->original = original;
 115     vout->p->dpb_size = cfg->dpb_size;
 116
 117     vout_control_Init(&vout->p->control);
 118     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_INIT);
 119
 120     vout_statistic_Init(&vout->p->statistic);
 121     vout->p->i_par_num =
 122     vout->p->i_par_den = 1;
 123
 124     vout_snapshot_Init(&vout->p->snapshot);
 125
 126     /* Initialize locks */
 127     vlc_mutex_init(&vout->p->picture_lock);
 128     vlc_mutex_init(&vout->p->filter.lock);
 129     vlc_mutex_init(&vout->p->spu_lock);
 130
 131     /* Attach the new object now so we can use var inheritance below */
 132     vlc_object_attach(vout, object);
 133
 134     /* Initialize subpicture unit */
 135     vout->p->p_spu = spu_Create(vout);
 136
 137     /* Take care of some "interface/control" related initialisations */
 138     vout_IntfInit(vout);
 139
 140     /* Get splitter name if present */
 141     char *splitter_name = var_GetNonEmptyString(vout, "vout-filter");
 142     if (splitter_name) {
 143         if (asprintf(&vout->p->splitter_name, "%s,none", splitter_name) < 0)
 144             vout->p->splitter_name = NULL;
 145         free(splitter_name);
 146     } else {
 147         vout->p->splitter_name = NULL;
 148     }
 149
 150     /* */
 151     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 152
 153     /* */
 154     vlc_object_set_destructor(vout, VoutDestructor);
 155
 156     /* */
 157     if (vlc_clone(&vout->p->thread, Thread, vout,
 158                   VLC_THREAD_PRIORITY_OUTPUT)) {
 159         spu_Destroy(vout->p->p_spu);
 160         vlc_object_release(vout);
 161         return NULL;
 162     }
 163
 164     vout_control_WaitEmpty(&vout->p->control);
 165
 166     if (vout->p->dead) {
 167         msg_Err(vout, "video output creation failed");
 168         vout_CloseAndRelease(vout);
 169         return NULL;
 170     }
 171
 172     vout->p->input = cfg->input;
 173     if (vout->p->input)
 174         spu_Attach(vout->p->p_spu, vout->p->input, true);
 175
 176     return vout;
 177 }
 178
 179 vout_thread_t *(vout_Request)(vlc_object_t *object,
 180                               const vout_configuration_t *cfg)
 181 {
 182     vout_thread_t *vout = cfg->vout;
 183     if (cfg->change_fmt && !cfg->fmt) {
 184         if (vout)
 185             vout_CloseAndRelease(vout);
 186         return NULL;
 187     }
 188
 189     /* If a vout is provided, try reusing it */
 190     if (vout) {
 191         if (vout->p->input != cfg->input) {
 192             if (vout->p->input)
 193                 spu_Attach(vout->p->p_spu, vout->p->input, false);
 194             vout->p->input = cfg->input;
 195             if (vout->p->input)
 196                 spu_Attach(vout->p->p_spu, vout->p->input, true);
 197         }
 198
 199         if (cfg->change_fmt) {
 200             vout_control_cmd_t cmd;
 201             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 202             cmd.u.cfg = cfg;
 203
 204             vout_control_Push(&vout->p->control, &cmd);
 205             vout_control_WaitEmpty(&vout->p->control);
 206         }
 207
 208         if (!vout->p->dead) {
 209             msg_Dbg(object, "reusing provided vout");
 210             return vout;
 211         }
 212         vout_CloseAndRelease(vout);
 213
 214         msg_Warn(object, "cannot reuse provided vout");
 215     }
 216     return VoutCreate(object, cfg);
 217 }
 218
 219 void vout_Close(vout_thread_t *vout)
 220 {
 221     assert(vout);
 222
 223     if (vout->p->input)
 224         spu_Attach(vout->p->p_spu, vout->p->input, false);
 225
 226     vout_snapshot_End(&vout->p->snapshot);
 227
 228     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 229     vlc_join(vout->p->thread, NULL);
 230
 231     vlc_mutex_lock(&vout->p->spu_lock);
 232     spu_Destroy(vout->p->p_spu);
 233     vout->p->p_spu = NULL;
 234     vlc_mutex_unlock(&vout->p->spu_lock);
 235 }
 236
 237 /* */
 238 static void VoutDestructor(vlc_object_t *object)
 239 {
 240     vout_thread_t *vout = (vout_thread_t *)object;
 241
 242     /* Make sure the vout was stopped first */
 243     //assert(!vout->p_module);
 244
 245     free(vout->p->splitter_name);
 246
 247     /* Destroy the locks */
 248     vlc_mutex_destroy(&vout->p->spu_lock);
 249     vlc_mutex_destroy(&vout->p->picture_lock);
 250     vlc_mutex_destroy(&vout->p->filter.lock);
 251     vout_control_Clean(&vout->p->control);
 252
 253     /* */
 254     vout_statistic_Clean(&vout->p->statistic);
 255
 256     /* */
 257     vout_snapshot_Clean(&vout->p->snapshot);
 258
 259     video_format_Clean(&vout->p->original);
 260 }
 261
 262 /* */
 263 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 264 {
 265     vout_control_cmd_t cmd;
 266     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 267     cmd.u.pause.is_on = is_paused;
 268     cmd.u.pause.date  = date;
 269     vout_control_Push(&vout->p->control, &cmd);
 270
 271     vout_control_WaitEmpty(&vout->p->control);
 272 }
 273
 274 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 275 {
 276     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 277 }
 278
 279 void vout_Flush(vout_thread_t *vout, mtime_t date)
 280 {
 281     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 282     vout_control_WaitEmpty(&vout->p->control);
 283 }
 284
 285 void vout_Reset(vout_thread_t *vout)
 286 {
 287     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 288     vout_control_WaitEmpty(&vout->p->control);
 289 }
 290
 291 bool vout_IsEmpty(vout_thread_t *vout)
 292 {
 293     vlc_mutex_lock(&vout->p->picture_lock);
 294
 295     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 296     if (picture)
 297         picture_Release(picture);
 298
 299     vlc_mutex_unlock(&vout->p->picture_lock);
 300
 301     return !picture;
 302 }
 303
 304 void vout_FixLeaks( vout_thread_t *vout )
 305 {
 306     vlc_mutex_lock(&vout->p->picture_lock);
 307
 308     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 309     if (!picture) {
 310         picture = picture_pool_Get(vout->p->decoder_pool);
 311     }
 312
 313     if (picture) {
 314         picture_Release(picture);
 315         /* Not all pictures has been displayed yet or some are
 316          * free */
 317         vlc_mutex_unlock(&vout->p->picture_lock);
 318         return;
 319     }
 320
 321     /* There is no reason that no pictures are available, force one
 322      * from the pool, becarefull with it though */
 323     msg_Err(vout, "pictures leaked, trying to workaround");
 324
 325     /* */
 326     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 327
 328     vlc_mutex_unlock(&vout->p->picture_lock);
 329 }
 330 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 331 {
 332     vout_control_cmd_t cmd;
 333     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 334     cmd.u.time_ptr = duration;
 335
 336     vout_control_Push(&vout->p->control, &cmd);
 337     vout_control_WaitEmpty(&vout->p->control);
 338 }
 339
 340 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 341 {
 342     assert(title);
 343     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 344 }
 345
 346 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 347 {
 348     vout_control_cmd_t cmd;
 349     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 350     cmd.u.subpicture = subpic;
 351
 352     vout_control_Push(&vout->p->control, &cmd);
 353 }
 354 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 355 {
 356     int channel = SPU_DEFAULT_CHANNEL;
 357
 358     vlc_mutex_lock(&vout->p->spu_lock);
 359     if (vout->p->p_spu)
 360         channel = spu_RegisterChannel(vout->p->p_spu);
 361     vlc_mutex_unlock(&vout->p->spu_lock);
 362
 363     return channel;
 364 }
 365 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 366 {
 367     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 368                              channel);
 369 }
 370
 371 /* vout_Control* are usable by anyone at anytime */
 372 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 373 {
 374     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 375                           fullscreen);
 376 }
 377 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 378 {
 379     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 380                           is_on_top);
 381 }
 382 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 383 {
 384     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 385                           is_filled);
 386 }
 387 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 388 {
 389     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 390                           num, den);
 391 }
 392 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 393                                          unsigned num, unsigned den)
 394 {
 395     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 396                           num, den);
 397 }
 398 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 399                                  unsigned num, unsigned den)
 400 {
 401     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 402                           num, den);
 403 }
 404 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 405                                   int x, int y, int width, int height)
 406 {
 407     vout_control_cmd_t cmd;
 408     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 409     cmd.u.window.x      = x;
 410     cmd.u.window.y      = y;
 411     cmd.u.window.width  = width;
 412     cmd.u.window.height = height;
 413
 414     vout_control_Push(&vout->p->control, &cmd);
 415 }
 416 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 417                                   int left, int top, int right, int bottom)
 418 {
 419     vout_control_cmd_t cmd;
 420     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 421     cmd.u.border.left   = left;
 422     cmd.u.border.top    = top;
 423     cmd.u.border.right  = right;
 424     cmd.u.border.bottom = bottom;
 425
 426     vout_control_Push(&vout->p->control, &cmd);
 427 }
 428 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 429 {
 430     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 431                             filters);
 432 }
 433 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 434 {
 435     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 436                             filters);
 437 }
 438 void vout_ControlChangeSubMargin(vout_thread_t *vout, int margin)
 439 {
 440     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_MARGIN,
 441                              margin);
 442 }
 443
 444 /* */
 445 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 446 {
 447     /* Load configuration */
 448     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 449     cfg->display.title = title;
 450     const int display_width = var_CreateGetInteger(vout, "width");
 451     const int display_height = var_CreateGetInteger(vout, "height");
 452     cfg->display.width   = display_width > 0  ? display_width  : 0;
 453     cfg->display.height  = display_height > 0 ? display_height : 0;
 454     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 455     cfg->display.sar.num = 1; /* TODO monitor AR */
 456     cfg->display.sar.den = 1;
 457     unsigned zoom_den = 1000;
 458     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 459     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 460     cfg->zoom.num = zoom_num;
 461     cfg->zoom.den = zoom_den;
 462     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 463     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 464     const int align_mask = var_CreateGetInteger(vout, "align");
 465     if (align_mask & 0x1)
 466         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 467     else if (align_mask & 0x2)
 468         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 469     if (align_mask & 0x4)
 470         cfg->align.vertical = VOUT_DISPLAY_ALIGN_TOP;
 471     else if (align_mask & 0x8)
 472         cfg->align.vertical = VOUT_DISPLAY_ALIGN_BOTTOM;
 473 }
 474
 475 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 476                                       const vout_window_cfg_t *cfg)
 477 {
 478     VLC_UNUSED(vd);
 479     vout_window_cfg_t cfg_override = *cfg;
 480
 481     if (!var_InheritBool( vout, "embedded-video"))
 482         cfg_override.is_standalone = true;
 483
 484     if (vout->p->window.is_unused && vout->p->window.object) {
 485         assert(!vout->p->splitter_name);
 486         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 487             cfg_override.type           == vout->p->window.cfg.type) {
 488             /* Reuse the stored window */
 489             msg_Dbg(vout, "Reusing previous vout window");
 490             vout_window_t *window = vout->p->window.object;
 491             if (cfg_override.width  != vout->p->window.cfg.width ||
 492                 cfg_override.height != vout->p->window.cfg.height)
 493                 vout_window_SetSize(window,
 494                                     cfg_override.width, cfg_override.height);
 495             vout->p->window.is_unused = false;
 496             vout->p->window.cfg       = cfg_override;
 497             return window;
 498         }
 499
 500         vout_window_Delete(vout->p->window.object);
 501         vout->p->window.is_unused = true;
 502         vout->p->window.object    = NULL;
 503     }
 504
 505     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), "$window",
 506                                             &cfg_override);
 507     if (!window)
 508         return NULL;
 509     if (!vout->p->splitter_name) {
 510         vout->p->window.is_unused = false;
 511         vout->p->window.cfg       = cfg_override;
 512         vout->p->window.object    = window;
 513     }
 514     return window;
 515 }
 516
 517 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 518                               vout_window_t *window)
 519 {
 520     VLC_UNUSED(vd);
 521     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 522         vout->p->window.is_unused = true;
 523     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 524         vout_window_Delete(vout->p->window.object);
 525         vout->p->window.is_unused = true;
 526         vout->p->window.object    = NULL;
 527     } else if (window) {
 528         vout_window_Delete(window);
 529     }
 530 }
 531
 532 /* */
 533
 534 static picture_t *VoutVideoFilterInteractiveNewPicture(filter_t *filter)
 535 {
 536     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 537
 538     return picture_pool_Get(vout->p->private_pool);
 539 }
 540 static picture_t *VoutVideoFilterStaticNewPicture(filter_t *filter)
 541 {
 542     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 543
 544     vlc_assert_locked(&vout->p->filter.lock);
 545     if (filter_chain_GetLength(vout->p->filter.chain_interactive) == 0)
 546         return VoutVideoFilterInteractiveNewPicture(filter);
 547     return picture_NewFromFormat(&filter->fmt_out.video);
 548 }
 549 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 550 {
 551     VLC_UNUSED(filter);
 552     picture_Release(picture);
 553 }
 554 static int VoutVideoFilterStaticAllocationSetup(filter_t *filter, void *data)
 555 {
 556     filter->pf_video_buffer_new = VoutVideoFilterStaticNewPicture;
 557     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 558     filter->p_owner             = data; /* vout */
 559     return VLC_SUCCESS;
 560 }
 561 static int VoutVideoFilterInteractiveAllocationSetup(filter_t *filter, void *data)
 562 {
 563     filter->pf_video_buffer_new = VoutVideoFilterInteractiveNewPicture;
 564     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 565     filter->p_owner             = data; /* vout */
 566     return VLC_SUCCESS;
 567 }
 568
 569 /* */
 570 static int ThreadDisplayPreparePicture(vout_thread_t *vout, bool reuse, bool is_late_dropped)
 571 {
 572     int lost_count = 0;
 573
 574     vlc_mutex_lock(&vout->p->filter.lock);
 575
 576     picture_t *picture = filter_chain_VideoFilter(vout->p->filter.chain_static, NULL);
 577     assert(!reuse || !picture);
 578
 579     while (!picture) {
 580         picture_t *decoded;
 581         if (reuse && vout->p->displayed.decoded) {
 582             decoded = picture_Hold(vout->p->displayed.decoded);
 583         } else {
 584             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 585             if (is_late_dropped && decoded && !decoded->b_force) {
 586                 const mtime_t predicted = mdate() + 0; /* TODO improve */
 587                 const mtime_t late = predicted - decoded->date;
 588                 if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 589                     msg_Warn(vout, "picture is too late to be displayed (missing %d ms)", (int)(late/1000));
 590                     picture_Release(decoded);
 591                     lost_count++;
 592                     continue;
 593                 } else if (late > 0) {
 594                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 595                 }
 596             }
 597         }
 598         if (!decoded)
 599             break;
 600         reuse = false;
 601
 602         if (vout->p->displayed.decoded)
 603             picture_Release(vout->p->displayed.decoded);
 604
 605         vout->p->displayed.decoded       = picture_Hold(decoded);
 606         vout->p->displayed.timestamp     = decoded->date;
 607         vout->p->displayed.is_interlaced = !decoded->b_progressive;
 608         vout->p->displayed.qtype         = decoded->i_qtype;
 609
 610         picture = filter_chain_VideoFilter(vout->p->filter.chain_static, decoded);
 611     }
 612
 613     vlc_mutex_unlock(&vout->p->filter.lock);
 614
 615     vout_statistic_Update(&vout->p->statistic, 0, lost_count);
 616     if (!picture)
 617         return VLC_EGENERIC;
 618
 619     assert(!vout->p->displayed.next);
 620     if (!vout->p->displayed.current)
 621         vout->p->displayed.current = picture;
 622     else
 623         vout->p->displayed.next    = picture;
 624     return VLC_SUCCESS;
 625 }
 626
 627 static int ThreadDisplayRenderPicture(vout_thread_t *vout, bool is_forced)
 628 {
 629     vout_display_t *vd = vout->p->display.vd;
 630
 631     picture_t *torender = picture_Hold(vout->p->displayed.current);
 632
 633     vout_chrono_Start(&vout->p->render);
 634
 635     vlc_mutex_lock(&vout->p->filter.lock);
 636     picture_t *filtered = filter_chain_VideoFilter(vout->p->filter.chain_interactive, torender);
 637     vlc_mutex_unlock(&vout->p->filter.lock);
 638
 639     if (!filtered)
 640         return VLC_EGENERIC;
 641
 642     if (filtered->date != vout->p->displayed.current->date)
 643         msg_Warn(vout, "Unsupported timestamp modifications done by chain_interactive");
 644
 645     /*
 646      * Check for subpictures to display
 647      */
 648     const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 649     mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 650     if (vout->p->pause.is_on)
 651         spu_render_time = vout->p->pause.date;
 652     else
 653         spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 654
 655     subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 656                                                spu_render_time,
 657                                                do_snapshot);
 658     /*
 659      * Perform rendering
 660      *
 661      * We have to:
 662      * - be sure to end up with a direct buffer.
 663      * - blend subtitles, and in a fast access buffer
 664      */
 665     picture_t *direct = NULL;
 666     if (filtered &&
 667         (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 668         picture_t *render;
 669         if (vout->p->is_decoder_pool_slow)
 670             render = picture_NewFromFormat(&vd->source);
 671         else if (vout->p->decoder_pool != vout->p->display_pool)
 672             render = picture_pool_Get(vout->p->display_pool);
 673         else
 674             render = picture_pool_Get(vout->p->private_pool);
 675
 676         if (render) {
 677             picture_Copy(render, filtered);
 678
 679             spu_RenderSubpictures(vout->p->p_spu,
 680                                   render, &vd->source,
 681                                   subpic, &vd->source, spu_render_time);
 682         }
 683         if (vout->p->is_decoder_pool_slow) {
 684             direct = picture_pool_Get(vout->p->display_pool);
 685             if (direct)
 686                 picture_Copy(direct, render);
 687             picture_Release(render);
 688
 689         } else {
 690             direct = render;
 691         }
 692         picture_Release(filtered);
 693         filtered = NULL;
 694     } else {
 695         direct = filtered;
 696     }
 697
 698     if (!direct)
 699         return VLC_EGENERIC;
 700
 701     /*
 702      * Take a snapshot if requested
 703      */
 704     if (do_snapshot)
 705         vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 706
 707     /* Render the direct buffer returned by vout_RenderPicture */
 708     vout_RenderWrapper(vout, direct);
 709
 710     vout_chrono_Stop(&vout->p->render);
 711 #if 0
 712         {
 713         static int i = 0;
 714         if (((i++)%10) == 0)
 715             msg_Info(vout, "render: avg %d ms var %d ms",
 716                      (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 717         }
 718 #endif
 719
 720     /* Wait the real date (for rendering jitter) */
 721 #if 0
 722     mtime_t delay = direct->date - mdate();
 723     if (delay < 1000)
 724         msg_Warn(vout, "picture is late (%lld ms)", delay / 1000);
 725 #endif
 726     if (!is_forced)
 727         mwait(direct->date);
 728
 729     /* Display the direct buffer returned by vout_RenderPicture */
 730     vout->p->displayed.date = mdate();
 731
 732     vout_DisplayWrapper(vout, direct);
 733
 734     vout_statistic_Update(&vout->p->statistic, 1, 0);
 735
 736     return VLC_SUCCESS;
 737 }
 738
 739 static int ThreadDisplayPicture(vout_thread_t *vout,
 740                                 bool now, mtime_t *deadline)
 741 {
 742     bool is_late_dropped = vout->p->is_late_dropped && !vout->p->pause.is_on && !now;
 743     bool first = !vout->p->displayed.current;
 744     if (first && ThreadDisplayPreparePicture(vout, true, is_late_dropped)) /* FIXME not sure it is ok */
 745         return VLC_EGENERIC;
 746     if (!vout->p->pause.is_on || now) {
 747         while (!vout->p->displayed.next) {
 748             if (ThreadDisplayPreparePicture(vout, false, is_late_dropped)) {
 749                 break;
 750             }
 751         }
 752     }
 753
 754     const mtime_t date = mdate();
 755     const mtime_t render_delay = vout_chrono_GetHigh(&vout->p->render) + VOUT_MWAIT_TOLERANCE;
 756
 757     mtime_t date_next = VLC_TS_INVALID;
 758     if (!vout->p->pause.is_on && vout->p->displayed.next)
 759         date_next = vout->p->displayed.next->date - render_delay;
 760
 761     /* FIXME/XXX we must redisplay the last decoded picture (because
 762      * of potential vout updated, or filters update or SPU update)
 763      * For now a high update period is needed but it coulmd be removed
 764      * if and only if:
 765      * - vout module emits events from theselves.
 766      * - *and* SPU is modified to emit an event or a deadline when needed.
 767      *
 768      * So it will be done latter.
 769      */
 770     mtime_t date_refresh = VLC_TS_INVALID;
 771     if (vout->p->displayed.date > VLC_TS_INVALID)
 772         date_refresh = vout->p->displayed.date + VOUT_REDISPLAY_DELAY - render_delay;
 773
 774     bool drop = now;
 775     if (date_next != VLC_TS_INVALID)
 776         drop |= date_next + 0 <= date;
 777
 778     bool refresh = false;
 779     if (date_refresh > VLC_TS_INVALID)
 780         refresh = date_refresh <= date;
 781
 782     if (!first && !refresh && !drop) {
 783         if (date_next != VLC_TS_INVALID && date_refresh != VLC_TS_INVALID)
 784             *deadline = __MIN(date_next, date_refresh);
 785         else if (date_next != VLC_TS_INVALID)
 786             *deadline = date_next;
 787         else if (date_refresh != VLC_TS_INVALID)
 788             *deadline = date_refresh;
 789         return VLC_EGENERIC;
 790     }
 791
 792     if (drop) {
 793         picture_Release(vout->p->displayed.current);
 794         vout->p->displayed.current = vout->p->displayed.next;
 795         vout->p->displayed.next    = NULL;
 796     }
 797     if (!vout->p->displayed.current)
 798         return VLC_EGENERIC;
 799
 800     bool is_forced = now || (!drop && refresh) || vout->p->displayed.current->b_force;
 801     return ThreadDisplayRenderPicture(vout, is_forced);
 802 }
 803
 804 static void ThreadManage(vout_thread_t *vout,
 805                          mtime_t *deadline,
 806                          vout_interlacing_support_t *interlacing,
 807                          vout_postprocessing_support_t *postprocessing)
 808 {
 809     vlc_mutex_lock(&vout->p->picture_lock);
 810
 811     *deadline = VLC_TS_INVALID;
 812     for (;;) {
 813         if (ThreadDisplayPicture(vout, false, deadline))
 814             break;
 815     }
 816
 817     const int  picture_qtype      = vout->p->displayed.qtype;
 818     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 819
 820     vlc_mutex_unlock(&vout->p->picture_lock);
 821
 822     /* Post processing */
 823     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 824
 825     /* Deinterlacing */
 826     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 827
 828     vout_ManageWrapper(vout);
 829 }
 830
 831 static void ThreadDisplaySubpicture(vout_thread_t *vout,
 832                                     subpicture_t *subpicture)
 833 {
 834     spu_DisplaySubpicture(vout->p->p_spu, subpicture);
 835 }
 836
 837 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
 838 {
 839     spu_ClearChannel(vout->p->p_spu, channel);
 840 }
 841
 842 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 843 {
 844     if (!vout->p->title.show)
 845         return;
 846
 847     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 848                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 849                  string);
 850 }
 851
 852 static void ThreadFilterFlush(vout_thread_t *vout)
 853 {
 854     if (vout->p->displayed.current)
 855         picture_Release( vout->p->displayed.current );
 856     vout->p->displayed.current = NULL;
 857
 858     if (vout->p->displayed.next)
 859         picture_Release( vout->p->displayed.next );
 860     vout->p->displayed.next = NULL;
 861
 862     vlc_mutex_lock(&vout->p->filter.lock);
 863     filter_chain_VideoFlush(vout->p->filter.chain_static);
 864     filter_chain_VideoFlush(vout->p->filter.chain_interactive);
 865     vlc_mutex_unlock(&vout->p->filter.lock);
 866 }
 867
 868 typedef struct {
 869     char           *name;
 870     config_chain_t *cfg;
 871 } vout_filter_t;
 872
 873 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 874 {
 875     ThreadFilterFlush(vout);
 876
 877     vlc_array_t array_static;
 878     vlc_array_t array_interactive;
 879
 880     vlc_array_init(&array_static);
 881     vlc_array_init(&array_interactive);
 882     char *current = filters ? strdup(filters) : NULL;
 883     while (current) {
 884         config_chain_t *cfg;
 885         char *name;
 886         char *next = config_ChainCreate(&name, &cfg, current);
 887
 888         if (name && *name) {
 889             vout_filter_t *e = xmalloc(sizeof(*e));
 890             e->name = name;
 891             e->cfg  = cfg;
 892             if (!strcmp(e->name, "deinterlace") ||
 893                 !strcmp(e->name, "postproc")) {
 894                 vlc_array_append(&array_static, e);
 895             } else {
 896                 vlc_array_append(&array_interactive, e);
 897             }
 898         } else {
 899             if (cfg)
 900                 config_ChainDestroy(cfg);
 901             free(name);
 902         }
 903         free(current);
 904         current = next;
 905     }
 906
 907     es_format_t fmt;
 908     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 909     fmt.video = vout->p->original;
 910
 911     vlc_mutex_lock(&vout->p->filter.lock);
 912
 913     filter_chain_Reset(vout->p->filter.chain_static,      &fmt, &fmt);
 914     filter_chain_Reset(vout->p->filter.chain_interactive, &fmt, &fmt);
 915
 916     for (int a = 0; a < 2; a++) {
 917         vlc_array_t    *array = a == 0 ? &array_static :
 918                                          &array_interactive;
 919         filter_chain_t *chain = a == 0 ? vout->p->filter.chain_static :
 920                                          vout->p->filter.chain_interactive;
 921
 922         for (int i = 0; i < vlc_array_count(array); i++) {
 923             vout_filter_t *e = vlc_array_item_at_index(array, i);
 924             msg_Dbg(vout, "Adding '%s' as %s", e->name, a == 0 ? "static" : "interactive");
 925             if (!filter_chain_AppendFilter(chain, e->name, e->cfg, NULL, NULL)) {
 926                 msg_Err(vout, "Failed to add filter '%s'", e->name);
 927                 config_ChainDestroy(e->cfg);
 928             }
 929             free(e->name);
 930             free(e);
 931         }
 932         vlc_array_clear(array);
 933     }
 934
 935     vlc_mutex_unlock(&vout->p->filter.lock);
 936 }
 937
 938 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
 939 {
 940     spu_ChangeFilters(vout->p->p_spu, filters);
 941 }
 942 static void ThreadChangeSubMargin(vout_thread_t *vout, int margin)
 943 {
 944     spu_ChangeMargin(vout->p->p_spu, margin);
 945 }
 946
 947 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 948 {
 949     assert(!vout->p->pause.is_on || !is_paused);
 950
 951     if (vout->p->pause.is_on) {
 952         const mtime_t duration = date - vout->p->pause.date;
 953
 954         if (vout->p->step.timestamp > VLC_TS_INVALID)
 955             vout->p->step.timestamp += duration;
 956         if (vout->p->step.last > VLC_TS_INVALID)
 957             vout->p->step.last += duration;
 958         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
 959         if (vout->p->displayed.decoded)
 960             vout->p->displayed.decoded->date += duration;
 961         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
 962
 963         ThreadFilterFlush(vout);
 964     } else {
 965         vout->p->step.timestamp = VLC_TS_INVALID;
 966         vout->p->step.last      = VLC_TS_INVALID;
 967     }
 968     vout->p->pause.is_on = is_paused;
 969     vout->p->pause.date  = date;
 970 }
 971
 972 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
 973 {
 974     vout->p->step.timestamp = VLC_TS_INVALID;
 975     vout->p->step.last      = VLC_TS_INVALID;
 976
 977     ThreadFilterFlush(vout); /* FIXME too much */
 978
 979     picture_t *last = vout->p->displayed.decoded;
 980     if (last) {
 981         if (( below && last->date <= date) ||
 982             (!below && last->date >= date)) {
 983             picture_Release(last);
 984
 985             vout->p->displayed.decoded   = NULL;
 986             vout->p->displayed.date      = VLC_TS_INVALID;
 987             vout->p->displayed.timestamp = VLC_TS_INVALID;
 988         }
 989     }
 990
 991     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
 992 }
 993
 994 static void ThreadReset(vout_thread_t *vout)
 995 {
 996     ThreadFlush(vout, true, INT64_MAX);
 997     if (vout->p->decoder_pool)
 998         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 999     vout->p->pause.is_on = false;
1000     vout->p->pause.date  = mdate();
1001 }
1002
1003 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
1004 {
1005     *duration = 0;
1006
1007     if (vout->p->step.last <= VLC_TS_INVALID)
1008         vout->p->step.last = vout->p->displayed.timestamp;
1009
1010     mtime_t dummy;
1011     if (ThreadDisplayPicture(vout, true, &dummy))
1012         return;
1013
1014     vout->p->step.timestamp = vout->p->displayed.timestamp;
1015
1016     if (vout->p->step.last > VLC_TS_INVALID &&
1017         vout->p->step.timestamp > vout->p->step.last) {
1018         *duration = vout->p->step.timestamp - vout->p->step.last;
1019         vout->p->step.last = vout->p->step.timestamp;
1020         /* TODO advance subpicture by the duration ... */
1021     }
1022 }
1023
1024 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
1025 {
1026     /* FIXME not sure setting "fullscreen" is good ... */
1027     var_SetBool(vout, "fullscreen", fullscreen);
1028     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
1029 }
1030
1031 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
1032 {
1033     vout_SetWindowState(vout->p->display.vd,
1034                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
1035                                     VOUT_WINDOW_STATE_NORMAL);
1036 }
1037
1038 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
1039 {
1040     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
1041 }
1042
1043 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
1044 {
1045     if (num * 10 < den) {
1046         num = den;
1047         den *= 10;
1048     } else if (num > den * 10) {
1049         num = den * 10;
1050     }
1051
1052     vout_SetDisplayZoom(vout->p->display.vd, num, den);
1053 }
1054
1055 static void ThreadChangeAspectRatio(vout_thread_t *vout,
1056                                     unsigned num, unsigned den)
1057 {
1058     const video_format_t *source = &vout->p->original;
1059
1060     if (num > 0 && den > 0) {
1061         num *= source->i_visible_height;
1062         den *= source->i_visible_width;
1063         vlc_ureduce(&num, &den, num, den, 0);
1064     }
1065     vout_SetDisplayAspect(vout->p->display.vd, num, den);
1066 }
1067
1068
1069 static void ThreadExecuteCropWindow(vout_thread_t *vout,
1070                                     unsigned crop_num, unsigned crop_den,
1071                                     unsigned x, unsigned y,
1072                                     unsigned width, unsigned height)
1073 {
1074     const video_format_t *source = &vout->p->original;
1075
1076     vout_SetDisplayCrop(vout->p->display.vd,
1077                         crop_num, crop_den,
1078                         source->i_x_offset + x,
1079                         source->i_y_offset + y,
1080                         width, height);
1081 }
1082 static void ThreadExecuteCropBorder(vout_thread_t *vout,
1083                                     unsigned left, unsigned top,
1084                                     unsigned right, unsigned bottom)
1085 {
1086     const video_format_t *source = &vout->p->original;
1087     ThreadExecuteCropWindow(vout, 0, 0,
1088                             left,
1089                             top,
1090                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
1091                             source->i_visible_width  - (left + right),
1092                             source->i_visible_height - (top  + bottom));
1093 }
1094
1095 static void ThreadExecuteCropRatio(vout_thread_t *vout,
1096                                    unsigned num, unsigned den)
1097 {
1098     const video_format_t *source = &vout->p->original;
1099     ThreadExecuteCropWindow(vout, num, den,
1100                             0, 0,
1101                             source->i_visible_width,
1102                             source->i_visible_height);
1103 }
1104
1105 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
1106 {
1107     vlc_mouse_Init(&vout->p->mouse);
1108     vout->p->decoder_fifo = picture_fifo_New();
1109     vout->p->decoder_pool = NULL;
1110     vout->p->display_pool = NULL;
1111     vout->p->private_pool = NULL;
1112
1113     vout->p->filter.chain_static =
1114         filter_chain_New( vout, "video filter2", false,
1115                           VoutVideoFilterStaticAllocationSetup, NULL, vout);
1116     vout->p->filter.chain_interactive =
1117         filter_chain_New( vout, "video filter2", false,
1118                           VoutVideoFilterInteractiveAllocationSetup, NULL, vout);
1119
1120     vout_display_state_t state_default;
1121     if (!state) {
1122         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
1123         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
1124                                                                            VOUT_WINDOW_STATE_NORMAL;
1125         state_default.sar.num = 0;
1126         state_default.sar.den = 0;
1127
1128         state = &state_default;
1129     }
1130
1131     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
1132         return VLC_EGENERIC;
1133     if (vout_InitWrapper(vout))
1134         return VLC_EGENERIC;
1135     assert(vout->p->decoder_pool);
1136
1137     vout->p->displayed.current       = NULL;
1138     vout->p->displayed.next          = NULL;
1139     vout->p->displayed.decoded       = NULL;
1140     vout->p->displayed.date          = VLC_TS_INVALID;
1141     vout->p->displayed.timestamp     = VLC_TS_INVALID;
1142     vout->p->displayed.qtype         = QTYPE_NONE;
1143     vout->p->displayed.is_interlaced = false;
1144
1145     vout->p->step.last               = VLC_TS_INVALID;
1146     vout->p->step.timestamp          = VLC_TS_INVALID;
1147
1148     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
1149     return VLC_SUCCESS;
1150 }
1151
1152 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1153 {
1154     /* Destroy translation tables */
1155     if (vout->p->display.vd) {
1156         if (vout->p->decoder_pool) {
1157             ThreadFlush(vout, true, INT64_MAX);
1158             vout_EndWrapper(vout);
1159         }
1160         vout_CloseWrapper(vout, state);
1161     }
1162
1163     /* Destroy the video filters2 */
1164     filter_chain_Delete(vout->p->filter.chain_interactive);
1165     filter_chain_Delete(vout->p->filter.chain_static);
1166
1167     if (vout->p->decoder_fifo)
1168         picture_fifo_Delete(vout->p->decoder_fifo);
1169     assert(!vout->p->decoder_pool);
1170 }
1171
1172 static void ThreadInit(vout_thread_t *vout)
1173 {
1174     vout->p->window.is_unused = true;
1175     vout->p->window.object    = NULL;
1176     vout->p->dead             = false;
1177     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1178     vout->p->pause.is_on      = false;
1179     vout->p->pause.date       = VLC_TS_INVALID;
1180
1181     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1182 }
1183
1184 static void ThreadClean(vout_thread_t *vout)
1185 {
1186     if (vout->p->window.object) {
1187         assert(vout->p->window.is_unused);
1188         vout_window_Delete(vout->p->window.object);
1189     }
1190     vout_chrono_Clean(&vout->p->render);
1191     vout->p->dead = true;
1192     vout_control_Dead(&vout->p->control);
1193 }
1194
1195 static int ThreadReinit(vout_thread_t *vout,
1196                         const vout_configuration_t *cfg)
1197 {
1198     video_format_t original;
1199     if (VoutValidateFormat(&original, cfg->fmt)) {
1200         ThreadStop(vout, NULL);
1201         ThreadClean(vout);
1202         return VLC_EGENERIC;
1203     }
1204     if (video_format_IsSimilar(&original, &vout->p->original)) {
1205         if (cfg->dpb_size <= vout->p->dpb_size)
1206             return VLC_SUCCESS;
1207         msg_Warn(vout, "DPB need to be increased");
1208     }
1209
1210     vout_display_state_t state;
1211     memset(&state, 0, sizeof(state));
1212
1213     ThreadStop(vout, &state);
1214
1215     if (!state.cfg.is_fullscreen) {
1216         state.cfg.display.width  = 0;
1217         state.cfg.display.height = 0;
1218     }
1219     state.sar.num = 0;
1220     state.sar.den = 0;
1221     /* FIXME current vout "variables" are not in sync here anymore
1222      * and I am not sure what to do */
1223
1224     vout->p->original = original;
1225     vout->p->dpb_size = cfg->dpb_size;
1226     if (ThreadStart(vout, &state)) {
1227         ThreadClean(vout);
1228         return VLC_EGENERIC;
1229     }
1230     return VLC_SUCCESS;
1231 }
1232
1233 /*****************************************************************************
1234  * Thread: video output thread
1235  *****************************************************************************
1236  * Video output thread. This function does only returns when the thread is
1237  * terminated. It handles the pictures arriving in the video heap and the
1238  * display device events.
1239  *****************************************************************************/
1240 static void *Thread(void *object)
1241 {
1242     vout_thread_t *vout = object;
1243
1244     vout_interlacing_support_t interlacing = {
1245         .is_interlaced = false,
1246         .date = mdate(),
1247     };
1248     vout_postprocessing_support_t postprocessing = {
1249         .qtype = QTYPE_NONE,
1250     };
1251
1252     mtime_t deadline = VLC_TS_INVALID;
1253     for (;;) {
1254         vout_control_cmd_t cmd;
1255
1256         /* FIXME remove thoses ugly timeouts
1257          */
1258         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1259             switch(cmd.type) {
1260             case VOUT_CONTROL_INIT:
1261                 ThreadInit(vout);
1262                 if (ThreadStart(vout, NULL)) {
1263                     ThreadStop(vout, NULL);
1264                     ThreadClean(vout);
1265                     return NULL;
1266                 }
1267                 break;
1268             case VOUT_CONTROL_CLEAN:
1269                 ThreadStop(vout, NULL);
1270                 ThreadClean(vout);
1271                 return NULL;
1272             case VOUT_CONTROL_REINIT:
1273                 if (ThreadReinit(vout, cmd.u.cfg))
1274                     return NULL;
1275                 break;
1276             case VOUT_CONTROL_SUBPICTURE:
1277                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1278                 cmd.u.subpicture = NULL;
1279                 break;
1280             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1281                 ThreadFlushSubpicture(vout, cmd.u.integer);
1282                 break;
1283             case VOUT_CONTROL_OSD_TITLE:
1284                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1285                 break;
1286             case VOUT_CONTROL_CHANGE_FILTERS:
1287                 ThreadChangeFilters(vout, cmd.u.string);
1288                 break;
1289             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1290                 ThreadChangeSubFilters(vout, cmd.u.string);
1291                 break;
1292             case VOUT_CONTROL_CHANGE_SUB_MARGIN:
1293                 ThreadChangeSubMargin(vout, cmd.u.integer);
1294                 break;
1295             case VOUT_CONTROL_PAUSE:
1296                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1297                 break;
1298             case VOUT_CONTROL_FLUSH:
1299                 ThreadFlush(vout, false, cmd.u.time);
1300                 break;
1301             case VOUT_CONTROL_RESET:
1302                 ThreadReset(vout);
1303                 break;
1304             case VOUT_CONTROL_STEP:
1305                 ThreadStep(vout, cmd.u.time_ptr);
1306                 break;
1307             case VOUT_CONTROL_FULLSCREEN:
1308                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1309                 break;
1310             case VOUT_CONTROL_ON_TOP:
1311                 ThreadChangeOnTop(vout, cmd.u.boolean);
1312                 break;
1313             case VOUT_CONTROL_DISPLAY_FILLED:
1314                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1315                 break;
1316             case VOUT_CONTROL_ZOOM:
1317                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1318                 break;
1319             case VOUT_CONTROL_ASPECT_RATIO:
1320                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1321                 break;
1322            case VOUT_CONTROL_CROP_RATIO:
1323                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1324                 break;
1325             case VOUT_CONTROL_CROP_WINDOW:
1326                 ThreadExecuteCropWindow(vout, 0, 0,
1327                                         cmd.u.window.x, cmd.u.window.y,
1328                                         cmd.u.window.width, cmd.u.window.height);
1329                 break;
1330             case VOUT_CONTROL_CROP_BORDER:
1331                 ThreadExecuteCropBorder(vout,
1332                                         cmd.u.border.left,  cmd.u.border.top,
1333                                         cmd.u.border.right, cmd.u.border.bottom);
1334                 break;
1335             default:
1336                 break;
1337             }
1338             vout_control_cmd_Clean(&cmd);
1339         }
1340
1341         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1342     }
1343 }
1344