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(1000))
  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->vfilter_lock);
 129
 130     /* Attach the new object now so we can use var inheritance below */
 131     vlc_object_attach(vout, object);
 132
 133     /* Initialize subpicture unit */
 134     vout->p->p_spu = spu_Create(vout);
 135
 136     /* Take care of some "interface/control" related initialisations */
 137     vout_IntfInit(vout);
 138
 139     /* Get splitter name if present */
 140     char *splitter_name = var_GetNonEmptyString(vout, "vout-filter");
 141     if (splitter_name) {
 142         if (asprintf(&vout->p->splitter_name, "%s,none", splitter_name) < 0)
 143             vout->p->splitter_name = NULL;
 144         free(splitter_name);
 145     } else {
 146         vout->p->splitter_name = NULL;
 147     }
 148
 149     /* */
 150     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 151
 152     /* */
 153     vlc_object_set_destructor(vout, VoutDestructor);
 154
 155     /* */
 156     if (vlc_clone(&vout->p->thread, Thread, vout,
 157                   VLC_THREAD_PRIORITY_OUTPUT)) {
 158         vlc_object_release(vout);
 159         return NULL;
 160     }
 161
 162     vout_control_WaitEmpty(&vout->p->control);
 163
 164     if (vout->p->dead) {
 165         msg_Err(vout, "video output creation failed");
 166         vout_CloseAndRelease(vout);
 167         return NULL;
 168     }
 169
 170     vout->p->input = cfg->input;
 171     if (vout->p->input)
 172         spu_Attach(vout->p->p_spu, vout->p->input, true);
 173
 174     return vout;
 175 }
 176
 177 vout_thread_t *(vout_Request)(vlc_object_t *object,
 178                               const vout_configuration_t *cfg)
 179 {
 180     vout_thread_t *vout = cfg->vout;
 181     if (cfg->change_fmt && !cfg->fmt) {
 182         if (vout)
 183             vout_CloseAndRelease(vout);
 184         return NULL;
 185     }
 186
 187     /* If a vout is provided, try reusing it */
 188     if (vout) {
 189         if (vout->p->input != cfg->input) {
 190             if (vout->p->input)
 191                 spu_Attach(vout->p->p_spu, vout->p->input, false);
 192             vout->p->input = cfg->input;
 193             if (vout->p->input)
 194                 spu_Attach(vout->p->p_spu, vout->p->input, true);
 195         }
 196
 197         if (cfg->change_fmt) {
 198             vout_control_cmd_t cmd;
 199             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 200             cmd.u.cfg = cfg;
 201
 202             vout_control_Push(&vout->p->control, &cmd);
 203             vout_control_WaitEmpty(&vout->p->control);
 204         }
 205
 206         if (!vout->p->dead) {
 207             msg_Dbg(object, "reusing provided vout");
 208             return vout;
 209         }
 210         vout_CloseAndRelease(vout);
 211
 212         msg_Warn(object, "cannot reuse provided vout");
 213     }
 214     return VoutCreate(object, cfg);
 215 }
 216
 217 /*****************************************************************************
 218  * vout_Close: Close a vout created by VoutCreate.
 219  *****************************************************************************
 220  * You HAVE to call it on vout created by VoutCreate before vlc_object_release.
 221  * You should NEVER call it on vout not obtained through VoutCreate
 222  * (like with vout_Request or vlc_object_find.)
 223  * You can use vout_CloseAndRelease() as a convenience method.
 224  *****************************************************************************/
 225 void vout_Close(vout_thread_t *vout)
 226 {
 227     assert(vout);
 228
 229     if (vout->p->input)
 230         spu_Attach(vout->p->p_spu, vout->p->input, false);
 231     vlc_object_detach(vout->p->p_spu);
 232
 233     vout_snapshot_End(&vout->p->snapshot);
 234
 235     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 236     vlc_join(vout->p->thread, NULL);
 237 }
 238
 239 /* */
 240 static void VoutDestructor(vlc_object_t *object)
 241 {
 242     vout_thread_t *vout = (vout_thread_t *)object;
 243
 244     /* Make sure the vout was stopped first */
 245     //assert(!vout->p_module);
 246
 247     free(vout->p->splitter_name);
 248
 249     /* */
 250     spu_Destroy(vout->p->p_spu);
 251
 252     /* Destroy the locks */
 253     vlc_mutex_destroy(&vout->p->picture_lock);
 254     vlc_mutex_destroy(&vout->p->vfilter_lock);
 255     vout_control_Clean(&vout->p->control);
 256
 257     /* */
 258     vout_statistic_Clean(&vout->p->statistic);
 259
 260     /* */
 261     vout_snapshot_Clean(&vout->p->snapshot);
 262
 263     video_format_Clean(&vout->p->original);
 264 }
 265
 266 /* */
 267 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 268 {
 269     vout_control_cmd_t cmd;
 270     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 271     cmd.u.pause.is_on = is_paused;
 272     cmd.u.pause.date  = date;
 273     vout_control_Push(&vout->p->control, &cmd);
 274
 275     vout_control_WaitEmpty(&vout->p->control);
 276 }
 277
 278 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 279 {
 280     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 281 }
 282
 283 void vout_Flush(vout_thread_t *vout, mtime_t date)
 284 {
 285     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 286     vout_control_WaitEmpty(&vout->p->control);
 287 }
 288
 289 void vout_Reset(vout_thread_t *vout)
 290 {
 291     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 292     vout_control_WaitEmpty(&vout->p->control);
 293 }
 294
 295 bool vout_IsEmpty(vout_thread_t *vout)
 296 {
 297     vlc_mutex_lock(&vout->p->picture_lock);
 298
 299     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 300     if (picture)
 301         picture_Release(picture);
 302
 303     vlc_mutex_unlock(&vout->p->picture_lock);
 304
 305     return !picture;
 306 }
 307
 308 void vout_FixLeaks( vout_thread_t *vout )
 309 {
 310     vlc_mutex_lock(&vout->p->picture_lock);
 311
 312     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 313     if (!picture) {
 314         picture = picture_pool_Get(vout->p->decoder_pool);
 315     }
 316
 317     if (picture) {
 318         picture_Release(picture);
 319         /* Not all pictures has been displayed yet or some are
 320          * free */
 321         vlc_mutex_unlock(&vout->p->picture_lock);
 322         return;
 323     }
 324
 325     /* There is no reason that no pictures are available, force one
 326      * from the pool, becarefull with it though */
 327     msg_Err(vout, "pictures leaked, trying to workaround");
 328
 329     /* */
 330     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 331
 332     vlc_mutex_unlock(&vout->p->picture_lock);
 333 }
 334 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 335 {
 336     vout_control_cmd_t cmd;
 337     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 338     cmd.u.time_ptr = duration;
 339
 340     vout_control_Push(&vout->p->control, &cmd);
 341     vout_control_WaitEmpty(&vout->p->control);
 342 }
 343
 344 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 345 {
 346     assert(title);
 347     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 348 }
 349
 350 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 351 {
 352     vout_control_cmd_t cmd;
 353     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 354     cmd.u.subpicture = subpic;
 355
 356     vout_control_Push(&vout->p->control, &cmd);
 357 }
 358 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 359 {
 360     int channel = SPU_DEFAULT_CHANNEL;
 361
 362     vout_control_cmd_t cmd;
 363     vout_control_cmd_Init(&cmd, VOUT_CONTROL_REGISTER_SUBPICTURE);
 364     cmd.u.integer_ptr = &channel;
 365
 366     vout_control_Push(&vout->p->control, &cmd);
 367     vout_control_WaitEmpty(&vout->p->control);
 368
 369     return channel;
 370 }
 371 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 372 {
 373     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 374                              channel);
 375 }
 376
 377 /* vout_Control* are usable by anyone at anytime */
 378 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 379 {
 380     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 381                           fullscreen);
 382 }
 383 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 384 {
 385     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 386                           is_on_top);
 387 }
 388 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 389 {
 390     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 391                           is_filled);
 392 }
 393 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 394 {
 395     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 396                           num, den);
 397 }
 398 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 399                                          unsigned num, unsigned den)
 400 {
 401     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 402                           num, den);
 403 }
 404 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 405                                  unsigned num, unsigned den)
 406 {
 407     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 408                           num, den);
 409 }
 410 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 411                                   int x, int y, int width, int height)
 412 {
 413     vout_control_cmd_t cmd;
 414     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 415     cmd.u.window.x      = x;
 416     cmd.u.window.y      = y;
 417     cmd.u.window.width  = width;
 418     cmd.u.window.height = height;
 419
 420     vout_control_Push(&vout->p->control, &cmd);
 421 }
 422 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 423                                   int left, int top, int right, int bottom)
 424 {
 425     vout_control_cmd_t cmd;
 426     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 427     cmd.u.border.left   = left;
 428     cmd.u.border.top    = top;
 429     cmd.u.border.right  = right;
 430     cmd.u.border.bottom = bottom;
 431
 432     vout_control_Push(&vout->p->control, &cmd);
 433 }
 434 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 435 {
 436     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 437                             filters);
 438 }
 439 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 440 {
 441     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 442                             filters);
 443 }
 444
 445 /* */
 446 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 447 {
 448     /* Load configuration */
 449     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 450     cfg->display.title = title;
 451     const int display_width = var_CreateGetInteger(vout, "width");
 452     const int display_height = var_CreateGetInteger(vout, "height");
 453     cfg->display.width   = display_width > 0  ? display_width  : 0;
 454     cfg->display.height  = display_height > 0 ? display_height : 0;
 455     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 456     cfg->display.sar.num = 1; /* TODO monitor AR */
 457     cfg->display.sar.den = 1;
 458     unsigned zoom_den = 1000;
 459     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 460     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 461     cfg->zoom.num = zoom_num;
 462     cfg->zoom.den = zoom_den;
 463     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 464     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 465     const int align_mask = var_CreateGetInteger(vout, "align");
 466     if (align_mask & 0x1)
 467         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 468     else if (align_mask & 0x2)
 469         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 470     if (align_mask & 0x4)
 471         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 472     else if (align_mask & 0x8)
 473         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 474 }
 475
 476 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 477                                       const vout_window_cfg_t *cfg)
 478 {
 479     VLC_UNUSED(vd);
 480     vout_window_cfg_t cfg_override = *cfg;
 481
 482     if (!var_InheritBool( vout, "embedded-video"))
 483         cfg_override.is_standalone = true;
 484
 485     if (vout->p->window.is_unused && vout->p->window.object) {
 486         assert(!vout->p->splitter_name);
 487         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 488             cfg_override.type           == vout->p->window.cfg.type) {
 489             /* Reuse the stored window */
 490             msg_Dbg(vout, "Reusing previous vout window");
 491             vout_window_t *window = vout->p->window.object;
 492             if (cfg_override.width  != vout->p->window.cfg.width ||
 493                 cfg_override.height != vout->p->window.cfg.height)
 494                 vout_window_SetSize(window,
 495                                     cfg_override.width, cfg_override.height);
 496             vout->p->window.is_unused = false;
 497             vout->p->window.cfg       = cfg_override;
 498             return window;
 499         }
 500
 501         vout_window_Delete(vout->p->window.object);
 502         vout->p->window.is_unused = true;
 503         vout->p->window.object    = NULL;
 504     }
 505
 506     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), NULL,
 507                                             &cfg_override);
 508     if (!window)
 509         return NULL;
 510     if (!vout->p->splitter_name) {
 511         vout->p->window.is_unused = false;
 512         vout->p->window.cfg       = cfg_override;
 513         vout->p->window.object    = window;
 514     }
 515     return window;
 516 }
 517
 518 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 519                               vout_window_t *window)
 520 {
 521     VLC_UNUSED(vd);
 522     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 523         vout->p->window.is_unused = true;
 524     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 525         vout_window_Delete(vout->p->window.object);
 526         vout->p->window.is_unused = true;
 527         vout->p->window.object    = NULL;
 528     } else if (window) {
 529         vout_window_Delete(window);
 530     }
 531 }
 532
 533 /* */
 534 static picture_t *VoutVideoFilterNewPicture(filter_t *filter)
 535 {
 536     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 537     return picture_pool_Get(vout->p->private_pool);
 538 }
 539 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 540 {
 541     VLC_UNUSED(filter);
 542     picture_Release(picture);
 543 }
 544 static int VoutVideoFilterAllocationSetup(filter_t *filter, void *data)
 545 {
 546     filter->pf_video_buffer_new = VoutVideoFilterNewPicture;
 547     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 548     filter->p_owner             = data; /* vout */
 549     return VLC_SUCCESS;
 550 }
 551
 552 /* */
 553 static int ThreadDisplayPicture(vout_thread_t *vout,
 554                                 bool now, mtime_t *deadline)
 555 {
 556     vout_display_t *vd = vout->p->display.vd;
 557     int displayed_count = 0;
 558     int lost_count = 0;
 559
 560     for (;;) {
 561         const mtime_t date = mdate();
 562         const bool is_paused = vout->p->pause.is_on;
 563         bool redisplay = is_paused && !now && vout->p->displayed.decoded;
 564         bool is_forced;
 565
 566         /* FIXME/XXX we must redisplay the last decoded picture (because
 567          * of potential vout updated, or filters update or SPU update)
 568          * For now a high update period is needed but it coulmd be removed
 569          * if and only if:
 570          * - vout module emits events from theselves.
 571          * - *and* SPU is modified to emit an event or a deadline when needed.
 572          *
 573          * So it will be done latter.
 574          */
 575         if (!redisplay) {
 576             picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 577             if (peek) {
 578                 is_forced = peek->b_force || is_paused || now;
 579                 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
 580                 picture_Release(peek);
 581             } else {
 582                 redisplay = true;
 583             }
 584         }
 585         if (redisplay) {
 586              /* FIXME a better way for this delay is needed */
 587             const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
 588             if (date_update > date || !vout->p->displayed.decoded) {
 589                 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
 590                 break;
 591             }
 592             /* */
 593             is_forced = true;
 594             *deadline = date - vout_chrono_GetHigh(&vout->p->render);
 595         }
 596         if (*deadline > VOUT_MWAIT_TOLERANCE)
 597             *deadline -= VOUT_MWAIT_TOLERANCE;
 598
 599         /* If we are too early and can wait, do it */
 600         if (date < *deadline && !now)
 601             break;
 602
 603         picture_t *decoded;
 604         if (redisplay) {
 605             decoded = vout->p->displayed.decoded;
 606             vout->p->displayed.decoded = NULL;
 607         } else {
 608             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 609             assert(decoded);
 610             if (!is_forced && !vout->p->is_late_dropped) {
 611                 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
 612                 const mtime_t late = predicted - decoded->date;
 613                 if (late > 0) {
 614                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 615                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 616                         msg_Warn(vout, "rejected picture because of render time");
 617                         /* TODO */
 618                         picture_Release(decoded);
 619                         lost_count++;
 620                         break;
 621                     }
 622                 }
 623             }
 624
 625             vout->p->displayed.is_interlaced = !decoded->b_progressive;
 626             vout->p->displayed.qtype         = decoded->i_qtype;
 627         }
 628         vout->p->displayed.timestamp = decoded->date;
 629
 630         /* */
 631         if (vout->p->displayed.decoded)
 632             picture_Release(vout->p->displayed.decoded);
 633         picture_Hold(decoded);
 634         vout->p->displayed.decoded = decoded;
 635
 636         /* */
 637         vout_chrono_Start(&vout->p->render);
 638
 639         picture_t *filtered = NULL;
 640         if (decoded) {
 641             vlc_mutex_lock(&vout->p->vfilter_lock);
 642             filtered = filter_chain_VideoFilter(vout->p->vfilter_chain, decoded);
 643             //assert(filtered == decoded); // TODO implement
 644             vlc_mutex_unlock(&vout->p->vfilter_lock);
 645             if (!filtered)
 646                 continue;
 647         }
 648
 649         /*
 650          * Check for subpictures to display
 651          */
 652         const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 653         mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 654         if (vout->p->pause.is_on)
 655             spu_render_time = vout->p->pause.date;
 656         else
 657             spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 658
 659         subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 660                                                    spu_render_time,
 661                                                    do_snapshot);
 662         /*
 663          * Perform rendering
 664          *
 665          * We have to:
 666          * - be sure to end up with a direct buffer.
 667          * - blend subtitles, and in a fast access buffer
 668          */
 669         picture_t *direct = NULL;
 670         if (filtered &&
 671             (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 672             picture_t *render;
 673             if (vout->p->is_decoder_pool_slow)
 674                 render = picture_NewFromFormat(&vd->source);
 675             else if (vout->p->decoder_pool != vout->p->display_pool)
 676                 render = picture_pool_Get(vout->p->display_pool);
 677             else
 678                 render = picture_pool_Get(vout->p->private_pool);
 679
 680             if (render) {
 681                 picture_Copy(render, filtered);
 682
 683                 spu_RenderSubpictures(vout->p->p_spu,
 684                                       render, &vd->source,
 685                                       subpic, &vd->source, spu_render_time);
 686             }
 687             if (vout->p->is_decoder_pool_slow) {
 688                 direct = picture_pool_Get(vout->p->display_pool);
 689                 if (direct)
 690                     picture_Copy(direct, render);
 691                 picture_Release(render);
 692
 693             } else {
 694                 direct = render;
 695             }
 696             picture_Release(filtered);
 697             filtered = NULL;
 698         } else {
 699             direct = filtered;
 700         }
 701
 702         /*
 703          * Take a snapshot if requested
 704          */
 705         if (direct && do_snapshot)
 706             vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 707
 708         /* Render the direct buffer returned by vout_RenderPicture */
 709         if (direct) {
 710             vout_RenderWrapper(vout, direct);
 711
 712             vout_chrono_Stop(&vout->p->render);
 713 #if 0
 714             {
 715             static int i = 0;
 716             if (((i++)%10) == 0)
 717                 msg_Info(vout, "render: avg %d ms var %d ms",
 718                          (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 719             }
 720 #endif
 721         }
 722
 723         /* Wait the real date (for rendering jitter) */
 724         if (!is_forced)
 725             mwait(decoded->date);
 726
 727         /* Display the direct buffer returned by vout_RenderPicture */
 728         vout->p->displayed.date = mdate();
 729         if (direct)
 730             vout_DisplayWrapper(vout, direct);
 731
 732         displayed_count++;
 733         break;
 734     }
 735
 736     vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
 737     if (displayed_count <= 0)
 738         return VLC_EGENERIC;
 739     return VLC_SUCCESS;
 740 }
 741
 742 static void ThreadManage(vout_thread_t *vout,
 743                          mtime_t *deadline,
 744                          vout_interlacing_support_t *interlacing,
 745                          vout_postprocessing_support_t *postprocessing)
 746 {
 747     vlc_mutex_lock(&vout->p->picture_lock);
 748
 749     *deadline = VLC_TS_INVALID;
 750     ThreadDisplayPicture(vout, false, deadline);
 751
 752     const int  picture_qtype      = vout->p->displayed.qtype;
 753     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 754
 755     vlc_mutex_unlock(&vout->p->picture_lock);
 756
 757     /* Post processing */
 758     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 759
 760     /* Deinterlacing */
 761     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 762
 763     vout_ManageWrapper(vout);
 764 }
 765
 766 static void ThreadDisplaySubpicture(vout_thread_t *vout,
 767                                     subpicture_t *subpicture)
 768 {
 769     spu_DisplaySubpicture(vout->p->p_spu, subpicture);
 770 }
 771
 772 static void ThreadRegisterSubpicture(vout_thread_t *vout, int *channel)
 773 {
 774     *channel = spu_RegisterChannel(vout->p->p_spu);
 775 }
 776
 777 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
 778 {
 779     spu_ClearChannel(vout->p->p_spu, channel);
 780 }
 781
 782 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 783 {
 784     if (!vout->p->title.show)
 785         return;
 786
 787     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 788                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 789                  string);
 790 }
 791
 792 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 793 {
 794     es_format_t fmt;
 795     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 796     fmt.video = vout->p->original;
 797
 798     vlc_mutex_lock(&vout->p->vfilter_lock);
 799
 800     filter_chain_Reset(vout->p->vfilter_chain, &fmt, &fmt);
 801     if (filter_chain_AppendFromString(vout->p->vfilter_chain,
 802                                       filters) < 0)
 803         msg_Err(vout, "Video filter chain creation failed");
 804
 805     vlc_mutex_unlock(&vout->p->vfilter_lock);
 806 }
 807
 808 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
 809 {
 810     spu_ChangeFilters(vout->p->p_spu, filters);
 811 }
 812
 813 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 814 {
 815     assert(!vout->p->pause.is_on || !is_paused);
 816
 817     if (vout->p->pause.is_on) {
 818         const mtime_t duration = date - vout->p->pause.date;
 819
 820         if (vout->p->step.timestamp > VLC_TS_INVALID)
 821             vout->p->step.timestamp += duration;
 822         if (vout->p->step.last > VLC_TS_INVALID)
 823             vout->p->step.last += duration;
 824         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
 825         if (vout->p->displayed.decoded)
 826             vout->p->displayed.decoded->date += duration;
 827
 828         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
 829     } else {
 830         vout->p->step.timestamp = VLC_TS_INVALID;
 831         vout->p->step.last      = VLC_TS_INVALID;
 832     }
 833     vout->p->pause.is_on = is_paused;
 834     vout->p->pause.date  = date;
 835 }
 836
 837 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
 838 {
 839     vout->p->step.timestamp = VLC_TS_INVALID;
 840     vout->p->step.last      = VLC_TS_INVALID;
 841
 842     picture_t *last = vout->p->displayed.decoded;
 843     if (last) {
 844         if (( below && last->date <= date) ||
 845             (!below && last->date >= date)) {
 846             picture_Release(last);
 847
 848             vout->p->displayed.decoded   = NULL;
 849             vout->p->displayed.date      = VLC_TS_INVALID;
 850             vout->p->displayed.timestamp = VLC_TS_INVALID;
 851         }
 852     }
 853     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
 854 }
 855
 856 static void ThreadReset(vout_thread_t *vout)
 857 {
 858     ThreadFlush(vout, true, INT64_MAX);
 859     if (vout->p->decoder_pool)
 860         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 861     vout->p->pause.is_on = false;
 862     vout->p->pause.date  = mdate();
 863 }
 864
 865 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
 866 {
 867     *duration = 0;
 868
 869     if (vout->p->step.last <= VLC_TS_INVALID)
 870         vout->p->step.last = vout->p->displayed.timestamp;
 871
 872     mtime_t dummy;
 873     if (ThreadDisplayPicture(vout, true, &dummy))
 874         return;
 875
 876     vout->p->step.timestamp = vout->p->displayed.timestamp;
 877
 878     if (vout->p->step.last > VLC_TS_INVALID &&
 879         vout->p->step.timestamp > vout->p->step.last) {
 880         *duration = vout->p->step.timestamp - vout->p->step.last;
 881         vout->p->step.last = vout->p->step.timestamp;
 882         /* TODO advance subpicture by the duration ... */
 883     }
 884 }
 885
 886 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 887 {
 888     /* FIXME not sure setting "fullscreen" is good ... */
 889     var_SetBool(vout, "fullscreen", fullscreen);
 890     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
 891 }
 892
 893 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
 894 {
 895     vout_SetWindowState(vout->p->display.vd,
 896                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
 897                                     VOUT_WINDOW_STATE_NORMAL);
 898 }
 899
 900 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 901 {
 902     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
 903 }
 904
 905 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
 906 {
 907     if (num * 10 < den) {
 908         num = den;
 909         den *= 10;
 910     } else if (num > den * 10) {
 911         num = den * 10;
 912     }
 913
 914     vout_SetDisplayZoom(vout->p->display.vd, num, den);
 915 }
 916
 917 static void ThreadChangeAspectRatio(vout_thread_t *vout,
 918                                     unsigned num, unsigned den)
 919 {
 920     const video_format_t *source = &vout->p->original;
 921
 922     if (num > 0 && den > 0) {
 923         num *= source->i_visible_height;
 924         den *= source->i_visible_width;
 925         vlc_ureduce(&num, &den, num, den, 0);
 926     }
 927     vout_SetDisplayAspect(vout->p->display.vd, num, den);
 928 }
 929
 930
 931 static void ThreadExecuteCropWindow(vout_thread_t *vout,
 932                                     unsigned crop_num, unsigned crop_den,
 933                                     unsigned x, unsigned y,
 934                                     unsigned width, unsigned height)
 935 {
 936     const video_format_t *source = &vout->p->original;
 937
 938     vout_SetDisplayCrop(vout->p->display.vd,
 939                         crop_num, crop_den,
 940                         source->i_x_offset + x,
 941                         source->i_y_offset + y,
 942                         width, height);
 943 }
 944 static void ThreadExecuteCropBorder(vout_thread_t *vout,
 945                                     unsigned left, unsigned top,
 946                                     unsigned right, unsigned bottom)
 947 {
 948     const video_format_t *source = &vout->p->original;
 949     ThreadExecuteCropWindow(vout, 0, 0,
 950                             left,
 951                             top,
 952                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
 953                             source->i_visible_width  - (left + right),
 954                             source->i_visible_height - (top  + bottom));
 955 }
 956
 957 static void ThreadExecuteCropRatio(vout_thread_t *vout,
 958                                    unsigned num, unsigned den)
 959 {
 960     const video_format_t *source = &vout->p->original;
 961     ThreadExecuteCropWindow(vout, num, den,
 962                             0, 0,
 963                             source->i_visible_width,
 964                             source->i_visible_height);
 965 }
 966
 967 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
 968 {
 969     vlc_mouse_Init(&vout->p->mouse);
 970     vout->p->decoder_fifo = picture_fifo_New();
 971     vout->p->decoder_pool = NULL;
 972     vout->p->display_pool = NULL;
 973     vout->p->private_pool = NULL;
 974
 975     vout->p->vfilter_chain =
 976         filter_chain_New( vout, "video filter2", false,
 977                           VoutVideoFilterAllocationSetup, NULL, vout);
 978
 979     vout_display_state_t state_default;
 980     if (!state) {
 981         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
 982         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
 983                                                                            VOUT_WINDOW_STATE_NORMAL;
 984         state_default.sar.num = 0;
 985         state_default.sar.den = 0;
 986
 987         state = &state_default;
 988     }
 989
 990     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
 991         return VLC_EGENERIC;
 992     if (vout_InitWrapper(vout))
 993         return VLC_EGENERIC;
 994     assert(vout->p->decoder_pool);
 995
 996     vout->p->displayed.decoded       = NULL;
 997     vout->p->displayed.date          = VLC_TS_INVALID;
 998     vout->p->displayed.decoded       = NULL;
 999     vout->p->displayed.timestamp     = VLC_TS_INVALID;
1000     vout->p->displayed.qtype         = QTYPE_NONE;
1001     vout->p->displayed.is_interlaced = false;
1002
1003     vout->p->step.last               = VLC_TS_INVALID;
1004     vout->p->step.timestamp          = VLC_TS_INVALID;
1005
1006     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
1007     return VLC_SUCCESS;
1008 }
1009
1010 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1011 {
1012     /* Destroy the video filters2 */
1013     filter_chain_Delete(vout->p->vfilter_chain);
1014
1015     /* Destroy translation tables */
1016     if (vout->p->display.vd) {
1017         if (vout->p->decoder_pool) {
1018             ThreadFlush(vout, true, INT64_MAX);
1019             vout_EndWrapper(vout);
1020         }
1021         vout_CloseWrapper(vout, state);
1022     }
1023
1024     if (vout->p->decoder_fifo)
1025         picture_fifo_Delete(vout->p->decoder_fifo);
1026     assert(!vout->p->decoder_pool);
1027 }
1028
1029 static void ThreadInit(vout_thread_t *vout)
1030 {
1031     vout->p->window.is_unused = true;
1032     vout->p->window.object    = NULL;
1033     vout->p->dead             = false;
1034     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1035     vout->p->pause.is_on      = false;
1036     vout->p->pause.date       = VLC_TS_INVALID;
1037
1038     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1039 }
1040
1041 static void ThreadClean(vout_thread_t *vout)
1042 {
1043     if (vout->p->window.object) {
1044         assert(vout->p->window.is_unused);
1045         vout_window_Delete(vout->p->window.object);
1046     }
1047     vout_chrono_Clean(&vout->p->render);
1048     vout->p->dead = true;
1049     vout_control_Dead(&vout->p->control);
1050 }
1051
1052 static int ThreadReinit(vout_thread_t *vout,
1053                         const vout_configuration_t *cfg)
1054 {
1055     video_format_t original;
1056     if (VoutValidateFormat(&original, cfg->fmt)) {
1057         ThreadStop(vout, NULL);
1058         ThreadClean(vout);
1059         return VLC_EGENERIC;
1060     }
1061     if (video_format_IsSimilar(&original, &vout->p->original)) {
1062         if (cfg->dpb_size <= vout->p->dpb_size)
1063             return VLC_SUCCESS;
1064         msg_Warn(vout, "DPB need to be increased");
1065     }
1066
1067     vout_display_state_t state;
1068     memset(&state, 0, sizeof(state));
1069
1070     ThreadStop(vout, &state);
1071
1072     if (!state.cfg.is_fullscreen) {
1073         state.cfg.display.width  = 0;
1074         state.cfg.display.height = 0;
1075     }
1076     state.sar.num = 0;
1077     state.sar.den = 0;
1078     /* FIXME current vout "variables" are not in sync here anymore
1079      * and I am not sure what to do */
1080
1081     vout->p->original = original;
1082     vout->p->dpb_size = cfg->dpb_size;
1083     if (ThreadStart(vout, &state)) {
1084         ThreadClean(vout);
1085         return VLC_EGENERIC;
1086     }
1087     return VLC_SUCCESS;
1088 }
1089
1090 /*****************************************************************************
1091  * Thread: video output thread
1092  *****************************************************************************
1093  * Video output thread. This function does only returns when the thread is
1094  * terminated. It handles the pictures arriving in the video heap and the
1095  * display device events.
1096  *****************************************************************************/
1097 static void *Thread(void *object)
1098 {
1099     vout_thread_t *vout = object;
1100
1101     vout_interlacing_support_t interlacing = {
1102         .is_interlaced = false,
1103         .date = mdate(),
1104     };
1105     vout_postprocessing_support_t postprocessing = {
1106         .qtype = QTYPE_NONE,
1107     };
1108
1109     mtime_t deadline = VLC_TS_INVALID;
1110     for (;;) {
1111         vout_control_cmd_t cmd;
1112
1113         /* FIXME remove thoses ugly timeouts
1114          */
1115         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1116             switch(cmd.type) {
1117             case VOUT_CONTROL_INIT:
1118                 ThreadInit(vout);
1119                 if (ThreadStart(vout, NULL)) {
1120                     ThreadStop(vout, NULL);
1121                     ThreadClean(vout);
1122                     return NULL;
1123                 }
1124                 break;
1125             case VOUT_CONTROL_CLEAN:
1126                 ThreadStop(vout, NULL);
1127                 ThreadClean(vout);
1128                 return NULL;
1129             case VOUT_CONTROL_REINIT:
1130                 if (ThreadReinit(vout, cmd.u.cfg))
1131                     return NULL;
1132                 break;
1133             case VOUT_CONTROL_SUBPICTURE:
1134                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1135                 cmd.u.subpicture = NULL;
1136                 break;
1137             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1138                 ThreadFlushSubpicture(vout, cmd.u.integer);
1139                 break;
1140             case VOUT_CONTROL_REGISTER_SUBPICTURE:
1141                 ThreadRegisterSubpicture(vout, cmd.u.integer_ptr);
1142                 break;
1143             case VOUT_CONTROL_OSD_TITLE:
1144                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1145                 break;
1146             case VOUT_CONTROL_CHANGE_FILTERS:
1147                 ThreadChangeFilters(vout, cmd.u.string);
1148                 break;
1149             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1150                 ThreadChangeSubFilters(vout, cmd.u.string);
1151                 break;
1152             case VOUT_CONTROL_PAUSE:
1153                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1154                 break;
1155             case VOUT_CONTROL_FLUSH:
1156                 ThreadFlush(vout, false, cmd.u.time);
1157                 break;
1158             case VOUT_CONTROL_RESET:
1159                 ThreadReset(vout);
1160                 break;
1161             case VOUT_CONTROL_STEP:
1162                 ThreadStep(vout, cmd.u.time_ptr);
1163                 break;
1164             case VOUT_CONTROL_FULLSCREEN:
1165                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1166                 break;
1167             case VOUT_CONTROL_ON_TOP:
1168                 ThreadChangeOnTop(vout, cmd.u.boolean);
1169                 break;
1170             case VOUT_CONTROL_DISPLAY_FILLED:
1171                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1172                 break;
1173             case VOUT_CONTROL_ZOOM:
1174                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1175                 break;
1176             case VOUT_CONTROL_ASPECT_RATIO:
1177                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1178                 break;
1179            case VOUT_CONTROL_CROP_RATIO:
1180                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1181                 break;
1182             case VOUT_CONTROL_CROP_WINDOW:
1183                 ThreadExecuteCropWindow(vout, 0, 0,
1184                                         cmd.u.window.x, cmd.u.window.y,
1185                                         cmd.u.window.width, cmd.u.window.height);
1186                 break;
1187             case VOUT_CONTROL_CROP_BORDER:
1188                 ThreadExecuteCropBorder(vout,
1189                                         cmd.u.border.left,  cmd.u.border.top,
1190                                         cmd.u.border.right, cmd.u.border.bottom);
1191                 break;
1192             default:
1193                 break;
1194             }
1195             vout_control_cmd_Clean(&cmd);
1196         }
1197
1198         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1199     }
1200 }
1201