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     return spu_RegisterChannel(vout->p->p_spu);
 361 }
 362 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 363 {
 364     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 365                              channel);
 366 }
 367
 368 /* vout_Control* are usable by anyone at anytime */
 369 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 370 {
 371     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 372                           fullscreen);
 373 }
 374 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 375 {
 376     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 377                           is_on_top);
 378 }
 379 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 380 {
 381     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 382                           is_filled);
 383 }
 384 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 385 {
 386     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 387                           num, den);
 388 }
 389 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 390                                          unsigned num, unsigned den)
 391 {
 392     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 393                           num, den);
 394 }
 395 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 396                                  unsigned num, unsigned den)
 397 {
 398     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 399                           num, den);
 400 }
 401 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 402                                   int x, int y, int width, int height)
 403 {
 404     vout_control_cmd_t cmd;
 405     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 406     cmd.u.window.x      = x;
 407     cmd.u.window.y      = y;
 408     cmd.u.window.width  = width;
 409     cmd.u.window.height = height;
 410
 411     vout_control_Push(&vout->p->control, &cmd);
 412 }
 413 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 414                                   int left, int top, int right, int bottom)
 415 {
 416     vout_control_cmd_t cmd;
 417     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 418     cmd.u.border.left   = left;
 419     cmd.u.border.top    = top;
 420     cmd.u.border.right  = right;
 421     cmd.u.border.bottom = bottom;
 422
 423     vout_control_Push(&vout->p->control, &cmd);
 424 }
 425 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 426 {
 427     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 428                             filters);
 429 }
 430 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 431 {
 432     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 433                             filters);
 434 }
 435
 436 /* */
 437 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 438 {
 439     /* Load configuration */
 440     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 441     cfg->display.title = title;
 442     const int display_width = var_CreateGetInteger(vout, "width");
 443     const int display_height = var_CreateGetInteger(vout, "height");
 444     cfg->display.width   = display_width > 0  ? display_width  : 0;
 445     cfg->display.height  = display_height > 0 ? display_height : 0;
 446     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 447     cfg->display.sar.num = 1; /* TODO monitor AR */
 448     cfg->display.sar.den = 1;
 449     unsigned zoom_den = 1000;
 450     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 451     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 452     cfg->zoom.num = zoom_num;
 453     cfg->zoom.den = zoom_den;
 454     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 455     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 456     const int align_mask = var_CreateGetInteger(vout, "align");
 457     if (align_mask & 0x1)
 458         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 459     else if (align_mask & 0x2)
 460         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 461     if (align_mask & 0x4)
 462         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 463     else if (align_mask & 0x8)
 464         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 465 }
 466
 467 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 468                                       const vout_window_cfg_t *cfg)
 469 {
 470     VLC_UNUSED(vd);
 471     vout_window_cfg_t cfg_override = *cfg;
 472
 473     if (!var_InheritBool( vout, "embedded-video"))
 474         cfg_override.is_standalone = true;
 475
 476     if (vout->p->window.is_unused && vout->p->window.object) {
 477         assert(!vout->p->splitter_name);
 478         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 479             cfg_override.type           == vout->p->window.cfg.type) {
 480             /* Reuse the stored window */
 481             msg_Dbg(vout, "Reusing previous vout window");
 482             vout_window_t *window = vout->p->window.object;
 483             if (cfg_override.width  != vout->p->window.cfg.width ||
 484                 cfg_override.height != vout->p->window.cfg.height)
 485                 vout_window_SetSize(window,
 486                                     cfg_override.width, cfg_override.height);
 487             vout->p->window.is_unused = false;
 488             vout->p->window.cfg       = cfg_override;
 489             return window;
 490         }
 491
 492         vout_window_Delete(vout->p->window.object);
 493         vout->p->window.is_unused = true;
 494         vout->p->window.object    = NULL;
 495     }
 496
 497     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), NULL,
 498                                             &cfg_override);
 499     if (!window)
 500         return NULL;
 501     if (!vout->p->splitter_name) {
 502         vout->p->window.is_unused = false;
 503         vout->p->window.cfg       = cfg_override;
 504         vout->p->window.object    = window;
 505     }
 506     return window;
 507 }
 508
 509 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 510                               vout_window_t *window)
 511 {
 512     VLC_UNUSED(vd);
 513     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 514         vout->p->window.is_unused = true;
 515     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 516         vout_window_Delete(vout->p->window.object);
 517         vout->p->window.is_unused = true;
 518         vout->p->window.object    = NULL;
 519     } else if (window) {
 520         vout_window_Delete(window);
 521     }
 522 }
 523
 524 /* */
 525 static picture_t *VoutVideoFilterNewPicture(filter_t *filter)
 526 {
 527     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 528     return picture_pool_Get(vout->p->private_pool);
 529 }
 530 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 531 {
 532     VLC_UNUSED(filter);
 533     picture_Release(picture);
 534 }
 535 static int VoutVideoFilterAllocationSetup(filter_t *filter, void *data)
 536 {
 537     filter->pf_video_buffer_new = VoutVideoFilterNewPicture;
 538     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 539     filter->p_owner             = data; /* vout */
 540     return VLC_SUCCESS;
 541 }
 542
 543 /* */
 544 static int ThreadDisplayPicture(vout_thread_t *vout,
 545                                 bool now, mtime_t *deadline)
 546 {
 547     vout_display_t *vd = vout->p->display.vd;
 548     int displayed_count = 0;
 549     int lost_count = 0;
 550
 551     for (;;) {
 552         const mtime_t date = mdate();
 553         const bool is_paused = vout->p->pause.is_on;
 554         bool redisplay = is_paused && !now && vout->p->displayed.decoded;
 555         bool is_forced;
 556
 557         /* FIXME/XXX we must redisplay the last decoded picture (because
 558          * of potential vout updated, or filters update or SPU update)
 559          * For now a high update period is needed but it coulmd be removed
 560          * if and only if:
 561          * - vout module emits events from theselves.
 562          * - *and* SPU is modified to emit an event or a deadline when needed.
 563          *
 564          * So it will be done latter.
 565          */
 566         if (!redisplay) {
 567             picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 568             if (peek) {
 569                 is_forced = peek->b_force || is_paused || now;
 570                 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
 571                 picture_Release(peek);
 572             } else {
 573                 redisplay = true;
 574             }
 575         }
 576         if (redisplay) {
 577              /* FIXME a better way for this delay is needed */
 578             const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
 579             if (date_update > date || !vout->p->displayed.decoded) {
 580                 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
 581                 break;
 582             }
 583             /* */
 584             is_forced = true;
 585             *deadline = date - vout_chrono_GetHigh(&vout->p->render);
 586         }
 587         if (*deadline > VOUT_MWAIT_TOLERANCE)
 588             *deadline -= VOUT_MWAIT_TOLERANCE;
 589
 590         /* If we are too early and can wait, do it */
 591         if (date < *deadline && !now)
 592             break;
 593
 594         picture_t *decoded;
 595         if (redisplay) {
 596             decoded = vout->p->displayed.decoded;
 597             vout->p->displayed.decoded = NULL;
 598         } else {
 599             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 600             assert(decoded);
 601             if (!is_forced && !vout->p->is_late_dropped) {
 602                 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
 603                 const mtime_t late = predicted - decoded->date;
 604                 if (late > 0) {
 605                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 606                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 607                         msg_Warn(vout, "rejected picture because of render time");
 608                         /* TODO */
 609                         picture_Release(decoded);
 610                         lost_count++;
 611                         break;
 612                     }
 613                 }
 614             }
 615
 616             vout->p->displayed.is_interlaced = !decoded->b_progressive;
 617             vout->p->displayed.qtype         = decoded->i_qtype;
 618         }
 619         vout->p->displayed.timestamp = decoded->date;
 620
 621         /* */
 622         if (vout->p->displayed.decoded)
 623             picture_Release(vout->p->displayed.decoded);
 624         picture_Hold(decoded);
 625         vout->p->displayed.decoded = decoded;
 626
 627         /* */
 628         vout_chrono_Start(&vout->p->render);
 629
 630         picture_t *filtered = NULL;
 631         if (decoded) {
 632             vlc_mutex_lock(&vout->p->vfilter_lock);
 633             filtered = filter_chain_VideoFilter(vout->p->vfilter_chain, decoded);
 634             //assert(filtered == decoded); // TODO implement
 635             vlc_mutex_unlock(&vout->p->vfilter_lock);
 636             if (!filtered)
 637                 continue;
 638         }
 639
 640         /*
 641          * Check for subpictures to display
 642          */
 643         const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 644         mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 645         if (vout->p->pause.is_on)
 646             spu_render_time = vout->p->pause.date;
 647         else
 648             spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 649
 650         subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 651                                                    spu_render_time,
 652                                                    do_snapshot);
 653         /*
 654          * Perform rendering
 655          *
 656          * We have to:
 657          * - be sure to end up with a direct buffer.
 658          * - blend subtitles, and in a fast access buffer
 659          */
 660         picture_t *direct = NULL;
 661         if (filtered &&
 662             (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 663             picture_t *render;
 664             if (vout->p->is_decoder_pool_slow)
 665                 render = picture_NewFromFormat(&vd->source);
 666             else if (vout->p->decoder_pool != vout->p->display_pool)
 667                 render = picture_pool_Get(vout->p->display_pool);
 668             else
 669                 render = picture_pool_Get(vout->p->private_pool);
 670
 671             if (render) {
 672                 picture_Copy(render, filtered);
 673
 674                 spu_RenderSubpictures(vout->p->p_spu,
 675                                       render, &vd->source,
 676                                       subpic, &vd->source, spu_render_time);
 677             }
 678             if (vout->p->is_decoder_pool_slow) {
 679                 direct = picture_pool_Get(vout->p->display_pool);
 680                 if (direct)
 681                     picture_Copy(direct, render);
 682                 picture_Release(render);
 683
 684             } else {
 685                 direct = render;
 686             }
 687             picture_Release(filtered);
 688             filtered = NULL;
 689         } else {
 690             direct = filtered;
 691         }
 692
 693         /*
 694          * Take a snapshot if requested
 695          */
 696         if (direct && do_snapshot)
 697             vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 698
 699         /* Render the direct buffer returned by vout_RenderPicture */
 700         if (direct) {
 701             vout_RenderWrapper(vout, direct);
 702
 703             vout_chrono_Stop(&vout->p->render);
 704 #if 0
 705             {
 706             static int i = 0;
 707             if (((i++)%10) == 0)
 708                 msg_Info(vout, "render: avg %d ms var %d ms",
 709                          (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 710             }
 711 #endif
 712         }
 713
 714         /* Wait the real date (for rendering jitter) */
 715         if (!is_forced)
 716             mwait(decoded->date);
 717
 718         /* Display the direct buffer returned by vout_RenderPicture */
 719         vout->p->displayed.date = mdate();
 720         if (direct)
 721             vout_DisplayWrapper(vout, direct);
 722
 723         displayed_count++;
 724         break;
 725     }
 726
 727     vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
 728     if (displayed_count <= 0)
 729         return VLC_EGENERIC;
 730     return VLC_SUCCESS;
 731 }
 732
 733 static void ThreadManage(vout_thread_t *vout,
 734                          mtime_t *deadline,
 735                          vout_interlacing_support_t *interlacing,
 736                          vout_postprocessing_support_t *postprocessing)
 737 {
 738     vlc_mutex_lock(&vout->p->picture_lock);
 739
 740     *deadline = VLC_TS_INVALID;
 741     ThreadDisplayPicture(vout, false, deadline);
 742
 743     const int  picture_qtype      = vout->p->displayed.qtype;
 744     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 745
 746     vlc_mutex_unlock(&vout->p->picture_lock);
 747
 748     /* Post processing */
 749     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 750
 751     /* Deinterlacing */
 752     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 753
 754     vout_ManageWrapper(vout);
 755 }
 756
 757 static void ThreadDisplaySubpicture(vout_thread_t *vout,
 758                                     subpicture_t *subpicture)
 759 {
 760     spu_DisplaySubpicture(vout->p->p_spu, subpicture);
 761 }
 762
 763 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
 764 {
 765     spu_ClearChannel(vout->p->p_spu, channel);
 766 }
 767
 768 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 769 {
 770     if (!vout->p->title.show)
 771         return;
 772
 773     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 774                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 775                  string);
 776 }
 777
 778 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 779 {
 780     es_format_t fmt;
 781     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 782     fmt.video = vout->p->original;
 783
 784     vlc_mutex_lock(&vout->p->vfilter_lock);
 785
 786     filter_chain_Reset(vout->p->vfilter_chain, &fmt, &fmt);
 787     if (filter_chain_AppendFromString(vout->p->vfilter_chain,
 788                                       filters) < 0)
 789         msg_Err(vout, "Video filter chain creation failed");
 790
 791     vlc_mutex_unlock(&vout->p->vfilter_lock);
 792 }
 793
 794 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
 795 {
 796     spu_ChangeFilters(vout->p->p_spu, filters);
 797 }
 798
 799 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 800 {
 801     assert(!vout->p->pause.is_on || !is_paused);
 802
 803     if (vout->p->pause.is_on) {
 804         const mtime_t duration = date - vout->p->pause.date;
 805
 806         if (vout->p->step.timestamp > VLC_TS_INVALID)
 807             vout->p->step.timestamp += duration;
 808         if (vout->p->step.last > VLC_TS_INVALID)
 809             vout->p->step.last += duration;
 810         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
 811         if (vout->p->displayed.decoded)
 812             vout->p->displayed.decoded->date += duration;
 813
 814         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
 815     } else {
 816         vout->p->step.timestamp = VLC_TS_INVALID;
 817         vout->p->step.last      = VLC_TS_INVALID;
 818     }
 819     vout->p->pause.is_on = is_paused;
 820     vout->p->pause.date  = date;
 821 }
 822
 823 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
 824 {
 825     vout->p->step.timestamp = VLC_TS_INVALID;
 826     vout->p->step.last      = VLC_TS_INVALID;
 827
 828     picture_t *last = vout->p->displayed.decoded;
 829     if (last) {
 830         if (( below && last->date <= date) ||
 831             (!below && last->date >= date)) {
 832             picture_Release(last);
 833
 834             vout->p->displayed.decoded   = NULL;
 835             vout->p->displayed.date      = VLC_TS_INVALID;
 836             vout->p->displayed.timestamp = VLC_TS_INVALID;
 837         }
 838     }
 839     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
 840 }
 841
 842 static void ThreadReset(vout_thread_t *vout)
 843 {
 844     ThreadFlush(vout, true, INT64_MAX);
 845     if (vout->p->decoder_pool)
 846         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 847     vout->p->pause.is_on = false;
 848     vout->p->pause.date  = mdate();
 849 }
 850
 851 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
 852 {
 853     *duration = 0;
 854
 855     if (vout->p->step.last <= VLC_TS_INVALID)
 856         vout->p->step.last = vout->p->displayed.timestamp;
 857
 858     mtime_t dummy;
 859     if (ThreadDisplayPicture(vout, true, &dummy))
 860         return;
 861
 862     vout->p->step.timestamp = vout->p->displayed.timestamp;
 863
 864     if (vout->p->step.last > VLC_TS_INVALID &&
 865         vout->p->step.timestamp > vout->p->step.last) {
 866         *duration = vout->p->step.timestamp - vout->p->step.last;
 867         vout->p->step.last = vout->p->step.timestamp;
 868         /* TODO advance subpicture by the duration ... */
 869     }
 870 }
 871
 872 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 873 {
 874     /* FIXME not sure setting "fullscreen" is good ... */
 875     var_SetBool(vout, "fullscreen", fullscreen);
 876     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
 877 }
 878
 879 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
 880 {
 881     vout_SetWindowState(vout->p->display.vd,
 882                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
 883                                     VOUT_WINDOW_STATE_NORMAL);
 884 }
 885
 886 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 887 {
 888     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
 889 }
 890
 891 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
 892 {
 893     if (num * 10 < den) {
 894         num = den;
 895         den *= 10;
 896     } else if (num > den * 10) {
 897         num = den * 10;
 898     }
 899
 900     vout_SetDisplayZoom(vout->p->display.vd, num, den);
 901 }
 902
 903 static void ThreadChangeAspectRatio(vout_thread_t *vout,
 904                                     unsigned num, unsigned den)
 905 {
 906     const video_format_t *source = &vout->p->original;
 907
 908     if (num > 0 && den > 0) {
 909         num *= source->i_visible_height;
 910         den *= source->i_visible_width;
 911         vlc_ureduce(&num, &den, num, den, 0);
 912     }
 913     vout_SetDisplayAspect(vout->p->display.vd, num, den);
 914 }
 915
 916
 917 static void ThreadExecuteCropWindow(vout_thread_t *vout,
 918                                     unsigned crop_num, unsigned crop_den,
 919                                     unsigned x, unsigned y,
 920                                     unsigned width, unsigned height)
 921 {
 922     const video_format_t *source = &vout->p->original;
 923
 924     vout_SetDisplayCrop(vout->p->display.vd,
 925                         crop_num, crop_den,
 926                         source->i_x_offset + x,
 927                         source->i_y_offset + y,
 928                         width, height);
 929 }
 930 static void ThreadExecuteCropBorder(vout_thread_t *vout,
 931                                     unsigned left, unsigned top,
 932                                     unsigned right, unsigned bottom)
 933 {
 934     const video_format_t *source = &vout->p->original;
 935     ThreadExecuteCropWindow(vout, 0, 0,
 936                             left,
 937                             top,
 938                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
 939                             source->i_visible_width  - (left + right),
 940                             source->i_visible_height - (top  + bottom));
 941 }
 942
 943 static void ThreadExecuteCropRatio(vout_thread_t *vout,
 944                                    unsigned num, unsigned den)
 945 {
 946     const video_format_t *source = &vout->p->original;
 947     ThreadExecuteCropWindow(vout, num, den,
 948                             0, 0,
 949                             source->i_visible_width,
 950                             source->i_visible_height);
 951 }
 952
 953 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
 954 {
 955     vlc_mouse_Init(&vout->p->mouse);
 956     vout->p->decoder_fifo = picture_fifo_New();
 957     vout->p->decoder_pool = NULL;
 958     vout->p->display_pool = NULL;
 959     vout->p->private_pool = NULL;
 960
 961     vout->p->vfilter_chain =
 962         filter_chain_New( vout, "video filter2", false,
 963                           VoutVideoFilterAllocationSetup, NULL, vout);
 964
 965     vout_display_state_t state_default;
 966     if (!state) {
 967         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
 968         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
 969                                                                            VOUT_WINDOW_STATE_NORMAL;
 970         state_default.sar.num = 0;
 971         state_default.sar.den = 0;
 972
 973         state = &state_default;
 974     }
 975
 976     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
 977         return VLC_EGENERIC;
 978     if (vout_InitWrapper(vout))
 979         return VLC_EGENERIC;
 980     assert(vout->p->decoder_pool);
 981
 982     vout->p->displayed.decoded       = NULL;
 983     vout->p->displayed.date          = VLC_TS_INVALID;
 984     vout->p->displayed.decoded       = NULL;
 985     vout->p->displayed.timestamp     = VLC_TS_INVALID;
 986     vout->p->displayed.qtype         = QTYPE_NONE;
 987     vout->p->displayed.is_interlaced = false;
 988
 989     vout->p->step.last               = VLC_TS_INVALID;
 990     vout->p->step.timestamp          = VLC_TS_INVALID;
 991
 992     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
 993     return VLC_SUCCESS;
 994 }
 995
 996 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
 997 {
 998     /* Destroy the video filters2 */
 999     filter_chain_Delete(vout->p->vfilter_chain);
1000
1001     /* Destroy translation tables */
1002     if (vout->p->display.vd) {
1003         if (vout->p->decoder_pool) {
1004             ThreadFlush(vout, true, INT64_MAX);
1005             vout_EndWrapper(vout);
1006         }
1007         vout_CloseWrapper(vout, state);
1008     }
1009
1010     if (vout->p->decoder_fifo)
1011         picture_fifo_Delete(vout->p->decoder_fifo);
1012     assert(!vout->p->decoder_pool);
1013 }
1014
1015 static void ThreadInit(vout_thread_t *vout)
1016 {
1017     vout->p->window.is_unused = true;
1018     vout->p->window.object    = NULL;
1019     vout->p->dead             = false;
1020     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1021     vout->p->pause.is_on      = false;
1022     vout->p->pause.date       = VLC_TS_INVALID;
1023
1024     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1025 }
1026
1027 static void ThreadClean(vout_thread_t *vout)
1028 {
1029     if (vout->p->window.object) {
1030         assert(vout->p->window.is_unused);
1031         vout_window_Delete(vout->p->window.object);
1032     }
1033     vout_chrono_Clean(&vout->p->render);
1034     vout->p->dead = true;
1035     vout_control_Dead(&vout->p->control);
1036 }
1037
1038 static int ThreadReinit(vout_thread_t *vout,
1039                         const vout_configuration_t *cfg)
1040 {
1041     video_format_t original;
1042     if (VoutValidateFormat(&original, cfg->fmt)) {
1043         ThreadStop(vout, NULL);
1044         ThreadClean(vout);
1045         return VLC_EGENERIC;
1046     }
1047     if (video_format_IsSimilar(&original, &vout->p->original)) {
1048         if (cfg->dpb_size <= vout->p->dpb_size)
1049             return VLC_SUCCESS;
1050         msg_Warn(vout, "DPB need to be increased");
1051     }
1052
1053     vout_display_state_t state;
1054     memset(&state, 0, sizeof(state));
1055
1056     ThreadStop(vout, &state);
1057
1058     if (!state.cfg.is_fullscreen) {
1059         state.cfg.display.width  = 0;
1060         state.cfg.display.height = 0;
1061     }
1062     state.sar.num = 0;
1063     state.sar.den = 0;
1064     /* FIXME current vout "variables" are not in sync here anymore
1065      * and I am not sure what to do */
1066
1067     vout->p->original = original;
1068     vout->p->dpb_size = cfg->dpb_size;
1069     if (ThreadStart(vout, &state)) {
1070         ThreadClean(vout);
1071         return VLC_EGENERIC;
1072     }
1073     return VLC_SUCCESS;
1074 }
1075
1076 /*****************************************************************************
1077  * Thread: video output thread
1078  *****************************************************************************
1079  * Video output thread. This function does only returns when the thread is
1080  * terminated. It handles the pictures arriving in the video heap and the
1081  * display device events.
1082  *****************************************************************************/
1083 static void *Thread(void *object)
1084 {
1085     vout_thread_t *vout = object;
1086
1087     vout_interlacing_support_t interlacing = {
1088         .is_interlaced = false,
1089         .date = mdate(),
1090     };
1091     vout_postprocessing_support_t postprocessing = {
1092         .qtype = QTYPE_NONE,
1093     };
1094
1095     mtime_t deadline = VLC_TS_INVALID;
1096     for (;;) {
1097         vout_control_cmd_t cmd;
1098
1099         /* FIXME remove thoses ugly timeouts
1100          */
1101         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1102             switch(cmd.type) {
1103             case VOUT_CONTROL_INIT:
1104                 ThreadInit(vout);
1105                 if (ThreadStart(vout, NULL)) {
1106                     ThreadStop(vout, NULL);
1107                     ThreadClean(vout);
1108                     return NULL;
1109                 }
1110                 break;
1111             case VOUT_CONTROL_CLEAN:
1112                 ThreadStop(vout, NULL);
1113                 ThreadClean(vout);
1114                 return NULL;
1115             case VOUT_CONTROL_REINIT:
1116                 if (ThreadReinit(vout, cmd.u.cfg))
1117                     return NULL;
1118                 break;
1119             case VOUT_CONTROL_SUBPICTURE:
1120                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1121                 cmd.u.subpicture = NULL;
1122                 break;
1123             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1124                 ThreadFlushSubpicture(vout, cmd.u.integer);
1125                 break;
1126             case VOUT_CONTROL_OSD_TITLE:
1127                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1128                 break;
1129             case VOUT_CONTROL_CHANGE_FILTERS:
1130                 ThreadChangeFilters(vout, cmd.u.string);
1131                 break;
1132             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1133                 ThreadChangeSubFilters(vout, cmd.u.string);
1134                 break;
1135             case VOUT_CONTROL_PAUSE:
1136                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1137                 break;
1138             case VOUT_CONTROL_FLUSH:
1139                 ThreadFlush(vout, false, cmd.u.time);
1140                 break;
1141             case VOUT_CONTROL_RESET:
1142                 ThreadReset(vout);
1143                 break;
1144             case VOUT_CONTROL_STEP:
1145                 ThreadStep(vout, cmd.u.time_ptr);
1146                 break;
1147             case VOUT_CONTROL_FULLSCREEN:
1148                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1149                 break;
1150             case VOUT_CONTROL_ON_TOP:
1151                 ThreadChangeOnTop(vout, cmd.u.boolean);
1152                 break;
1153             case VOUT_CONTROL_DISPLAY_FILLED:
1154                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1155                 break;
1156             case VOUT_CONTROL_ZOOM:
1157                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1158                 break;
1159             case VOUT_CONTROL_ASPECT_RATIO:
1160                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1161                 break;
1162            case VOUT_CONTROL_CROP_RATIO:
1163                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1164                 break;
1165             case VOUT_CONTROL_CROP_WINDOW:
1166                 ThreadExecuteCropWindow(vout, 0, 0,
1167                                         cmd.u.window.x, cmd.u.window.y,
1168                                         cmd.u.window.width, cmd.u.window.height);
1169                 break;
1170             case VOUT_CONTROL_CROP_BORDER:
1171                 ThreadExecuteCropBorder(vout,
1172                                         cmd.u.border.left,  cmd.u.border.top,
1173                                         cmd.u.border.right, cmd.u.border.bottom);
1174                 break;
1175             default:
1176                 break;
1177             }
1178             vout_control_cmd_Clean(&cmd);
1179         }
1180
1181         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1182     }
1183 }
1184