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 #include <vlc_image.h>
  48
  49 #include <libvlc.h>
  50 #include "vout_internal.h"
  51 #include "interlacing.h"
  52 #include "postprocessing.h"
  53 #include "display.h"
  54
  55 /*****************************************************************************
  56  * Local prototypes
  57  *****************************************************************************/
  58 static void *Thread(void *);
  59 static void VoutDestructor(vlc_object_t *);
  60
  61 /* Maximum delay between 2 displayed pictures.
  62  * XXX it is needed for now but should be removed in the long term.
  63  */
  64 #define VOUT_REDISPLAY_DELAY (INT64_C(80000))
  65
  66 /**
  67  * Late pictures having a delay higher than this value are thrashed.
  68  */
  69 #define VOUT_DISPLAY_LATE_THRESHOLD (INT64_C(20000))
  70
  71 /* Better be in advance when awakening than late... */
  72 #define VOUT_MWAIT_TOLERANCE (INT64_C(4000))
  73
  74 /* */
  75 static int VoutValidateFormat(video_format_t *dst,
  76                               const video_format_t *src)
  77 {
  78     if (src->i_width <= 0 || src->i_height <= 0)
  79         return VLC_EGENERIC;
  80     if (src->i_sar_num <= 0 || src->i_sar_den <= 0)
  81         return VLC_EGENERIC;
  82
  83     /* */
  84     video_format_Copy(dst, src);
  85     dst->i_chroma = vlc_fourcc_GetCodec(VIDEO_ES, src->i_chroma);
  86     vlc_ureduce( &dst->i_sar_num, &dst->i_sar_den,
  87                  src->i_sar_num,  src->i_sar_den, 50000 );
  88     if (dst->i_sar_num <= 0 || dst->i_sar_den <= 0) {
  89         dst->i_sar_num = 1;
  90         dst->i_sar_den = 1;
  91     }
  92     video_format_FixRgb(dst);
  93     return VLC_SUCCESS;
  94 }
  95 static void VideoFormatCopyCropAr(video_format_t *dst,
  96                                   const video_format_t *src)
  97 {
  98     video_format_CopyCrop(dst, src);
  99     dst->i_sar_num = src->i_sar_num;
 100     dst->i_sar_den = src->i_sar_den;
 101 }
 102 static bool VideoFormatIsCropArEqual(video_format_t *dst,
 103                                      const video_format_t *src)
 104 {
 105     return dst->i_sar_num * src->i_sar_den == dst->i_sar_den * src->i_sar_num &&
 106            dst->i_x_offset       == src->i_x_offset &&
 107            dst->i_y_offset       == src->i_y_offset &&
 108            dst->i_visible_width  == src->i_visible_width &&
 109            dst->i_visible_height == src->i_visible_height;
 110 }
 111
 112 static vout_thread_t *VoutCreate(vlc_object_t *object,
 113                                  const vout_configuration_t *cfg)
 114 {
 115     video_format_t original;
 116     if (VoutValidateFormat(&original, cfg->fmt))
 117         return NULL;
 118
 119     /* Allocate descriptor */
 120     vout_thread_t *vout = vlc_custom_create(object,
 121                                             sizeof(*vout) + sizeof(*vout->p),
 122                                             VLC_OBJECT_VOUT, "video output");
 123     if (!vout) {
 124         video_format_Clean(&original);
 125         return NULL;
 126     }
 127
 128     /* */
 129     vout->p = (vout_thread_sys_t*)&vout[1];
 130
 131     vout->p->original = original;
 132     vout->p->dpb_size = cfg->dpb_size;
 133
 134     vout_control_Init(&vout->p->control);
 135     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_INIT);
 136
 137     vout_statistic_Init(&vout->p->statistic);
 138
 139     vout_snapshot_Init(&vout->p->snapshot);
 140
 141     /* Initialize locks */
 142     vlc_mutex_init(&vout->p->picture_lock);
 143     vlc_mutex_init(&vout->p->filter.lock);
 144     vlc_mutex_init(&vout->p->spu_lock);
 145
 146     /* Attach the new object now so we can use var inheritance below */
 147     vlc_object_attach(vout, object);
 148
 149     /* Initialize subpicture unit */
 150     vout->p->spu = spu_Create(vout);
 151
 152     /* Take care of some "interface/control" related initialisations */
 153     vout_IntfInit(vout);
 154
 155     vout->p->title.show     = var_GetBool(vout, "video-title-show");
 156     vout->p->title.timeout  = var_GetInteger(vout, "video-title-timeout");
 157     vout->p->title.position = var_GetInteger(vout, "video-title-position");
 158
 159     /* Get splitter name if present */
 160     char *splitter_name = var_InheritString(vout, "video-splitter");
 161     if (splitter_name && *splitter_name) {
 162         vout->p->splitter_name = splitter_name;
 163     } else {
 164         free(splitter_name);
 165     }
 166
 167     /* */
 168     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 169
 170     /* */
 171     vlc_object_set_destructor(vout, VoutDestructor);
 172
 173     /* */
 174     if (vlc_clone(&vout->p->thread, Thread, vout,
 175                   VLC_THREAD_PRIORITY_OUTPUT)) {
 176         spu_Destroy(vout->p->spu);
 177         vlc_object_release(vout);
 178         return NULL;
 179     }
 180
 181     vout_control_WaitEmpty(&vout->p->control);
 182
 183     if (vout->p->dead) {
 184         msg_Err(vout, "video output creation failed");
 185         vout_CloseAndRelease(vout);
 186         return NULL;
 187     }
 188
 189     vout->p->input = cfg->input;
 190     if (vout->p->input)
 191         spu_Attach(vout->p->spu, vout->p->input, true);
 192
 193     return vout;
 194 }
 195
 196 vout_thread_t *(vout_Request)(vlc_object_t *object,
 197                               const vout_configuration_t *cfg)
 198 {
 199     vout_thread_t *vout = cfg->vout;
 200     if (cfg->change_fmt && !cfg->fmt) {
 201         if (vout)
 202             vout_CloseAndRelease(vout);
 203         return NULL;
 204     }
 205
 206     /* If a vout is provided, try reusing it */
 207     if (vout) {
 208         if (vout->p->input != cfg->input) {
 209             if (vout->p->input)
 210                 spu_Attach(vout->p->spu, vout->p->input, false);
 211             vout->p->input = cfg->input;
 212             if (vout->p->input)
 213                 spu_Attach(vout->p->spu, vout->p->input, true);
 214         }
 215
 216         if (cfg->change_fmt) {
 217             vout_control_cmd_t cmd;
 218             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 219             cmd.u.cfg = cfg;
 220
 221             vout_control_Push(&vout->p->control, &cmd);
 222             vout_control_WaitEmpty(&vout->p->control);
 223         }
 224
 225         if (!vout->p->dead) {
 226             msg_Dbg(object, "reusing provided vout");
 227             return vout;
 228         }
 229         vout_CloseAndRelease(vout);
 230
 231         msg_Warn(object, "cannot reuse provided vout");
 232     }
 233     return VoutCreate(object, cfg);
 234 }
 235
 236 void vout_Close(vout_thread_t *vout)
 237 {
 238     assert(vout);
 239
 240     if (vout->p->input)
 241         spu_Attach(vout->p->spu, vout->p->input, false);
 242
 243     vout_snapshot_End(&vout->p->snapshot);
 244
 245     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 246     vlc_join(vout->p->thread, NULL);
 247
 248     vlc_mutex_lock(&vout->p->spu_lock);
 249     spu_Destroy(vout->p->spu);
 250     vout->p->spu = NULL;
 251     vlc_mutex_unlock(&vout->p->spu_lock);
 252 }
 253
 254 /* */
 255 static void VoutDestructor(vlc_object_t *object)
 256 {
 257     vout_thread_t *vout = (vout_thread_t *)object;
 258
 259     /* Make sure the vout was stopped first */
 260     //assert(!vout->p_module);
 261
 262     free(vout->p->splitter_name);
 263
 264     /* Destroy the locks */
 265     vlc_mutex_destroy(&vout->p->spu_lock);
 266     vlc_mutex_destroy(&vout->p->picture_lock);
 267     vlc_mutex_destroy(&vout->p->filter.lock);
 268     vout_control_Clean(&vout->p->control);
 269
 270     /* */
 271     vout_statistic_Clean(&vout->p->statistic);
 272
 273     /* */
 274     vout_snapshot_Clean(&vout->p->snapshot);
 275
 276     video_format_Clean(&vout->p->original);
 277 }
 278
 279 /* */
 280 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 281 {
 282     vout_control_cmd_t cmd;
 283     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 284     cmd.u.pause.is_on = is_paused;
 285     cmd.u.pause.date  = date;
 286     vout_control_Push(&vout->p->control, &cmd);
 287
 288     vout_control_WaitEmpty(&vout->p->control);
 289 }
 290
 291 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 292 {
 293     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 294 }
 295
 296 void vout_Flush(vout_thread_t *vout, mtime_t date)
 297 {
 298     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 299     vout_control_WaitEmpty(&vout->p->control);
 300 }
 301
 302 void vout_Reset(vout_thread_t *vout)
 303 {
 304     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 305     vout_control_WaitEmpty(&vout->p->control);
 306 }
 307
 308 bool vout_IsEmpty(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_Release(picture);
 315
 316     vlc_mutex_unlock(&vout->p->picture_lock);
 317
 318     return !picture;
 319 }
 320
 321 void vout_FixLeaks( vout_thread_t *vout )
 322 {
 323     vlc_mutex_lock(&vout->p->picture_lock);
 324
 325     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 326     if (!picture) {
 327         picture = picture_pool_Get(vout->p->decoder_pool);
 328     }
 329
 330     if (picture) {
 331         picture_Release(picture);
 332         /* Not all pictures has been displayed yet or some are
 333          * free */
 334         vlc_mutex_unlock(&vout->p->picture_lock);
 335         return;
 336     }
 337
 338     /* There is no reason that no pictures are available, force one
 339      * from the pool, becarefull with it though */
 340     msg_Err(vout, "pictures leaked, trying to workaround");
 341
 342     /* */
 343     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 344
 345     vlc_mutex_unlock(&vout->p->picture_lock);
 346 }
 347 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 348 {
 349     vout_control_cmd_t cmd;
 350     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 351     cmd.u.time_ptr = duration;
 352
 353     vout_control_Push(&vout->p->control, &cmd);
 354     vout_control_WaitEmpty(&vout->p->control);
 355 }
 356
 357 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 358 {
 359     assert(title);
 360     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 361 }
 362
 363 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 364 {
 365     vout_control_cmd_t cmd;
 366     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 367     cmd.u.subpicture = subpic;
 368
 369     vout_control_Push(&vout->p->control, &cmd);
 370 }
 371 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 372 {
 373     int channel = SPU_DEFAULT_CHANNEL;
 374
 375     vlc_mutex_lock(&vout->p->spu_lock);
 376     if (vout->p->spu)
 377         channel = spu_RegisterChannel(vout->p->spu);
 378     vlc_mutex_unlock(&vout->p->spu_lock);
 379
 380     return channel;
 381 }
 382 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 383 {
 384     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 385                              channel);
 386 }
 387
 388 /**
 389  * It retreives a picture from the vout or NULL if no pictures are
 390  * available yet.
 391  *
 392  * You MUST call vout_PutPicture or vout_ReleasePicture on it.
 393  *
 394  * You may use vout_HoldPicture(paired with vout_ReleasePicture) to keep a
 395  * read-only reference.
 396  */
 397 picture_t *vout_GetPicture(vout_thread_t *vout)
 398 {
 399     /* Get lock */
 400     vlc_mutex_lock(&vout->p->picture_lock);
 401     picture_t *picture = picture_pool_Get(vout->p->decoder_pool);
 402     if (picture) {
 403         picture_Reset(picture);
 404         VideoFormatCopyCropAr(&picture->format, &vout->p->original);
 405     }
 406     vlc_mutex_unlock(&vout->p->picture_lock);
 407
 408     return picture;
 409 }
 410
 411 /**
 412  * It gives to the vout a picture to be displayed.
 413  *
 414  * The given picture MUST comes from vout_GetPicture.
 415  *
 416  * Becareful, after vout_PutPicture is called, picture_t::p_next cannot be
 417  * read/used.
 418  */
 419 void vout_PutPicture(vout_thread_t *vout, picture_t *picture)
 420 {
 421     vlc_mutex_lock(&vout->p->picture_lock);
 422
 423     picture->p_next = NULL;
 424     picture_fifo_Push(vout->p->decoder_fifo, picture);
 425
 426     vlc_mutex_unlock(&vout->p->picture_lock);
 427
 428     vout_control_Wake(&vout->p->control);
 429 }
 430
 431 /**
 432  * It releases a picture retreived by vout_GetPicture.
 433  */
 434 void vout_ReleasePicture(vout_thread_t *vout, picture_t *picture)
 435 {
 436     vlc_mutex_lock(&vout->p->picture_lock);
 437
 438     picture_Release(picture);
 439
 440     vlc_mutex_unlock(&vout->p->picture_lock);
 441
 442     vout_control_Wake(&vout->p->control);
 443 }
 444
 445 /**
 446  * It increment the reference counter of a picture retreived by
 447  * vout_GetPicture.
 448  */
 449 void vout_HoldPicture(vout_thread_t *vout, picture_t *picture)
 450 {
 451     vlc_mutex_lock(&vout->p->picture_lock);
 452
 453     picture_Hold(picture);
 454
 455     vlc_mutex_unlock(&vout->p->picture_lock);
 456 }
 457
 458 /* */
 459 int vout_GetSnapshot(vout_thread_t *vout,
 460                      block_t **image_dst, picture_t **picture_dst,
 461                      video_format_t *fmt,
 462                      const char *type, mtime_t timeout)
 463 {
 464     picture_t *picture = vout_snapshot_Get(&vout->p->snapshot, timeout);
 465     if (!picture) {
 466         msg_Err(vout, "Failed to grab a snapshot");
 467         return VLC_EGENERIC;
 468     }
 469
 470     if (image_dst) {
 471         vlc_fourcc_t codec = VLC_CODEC_PNG;
 472         if (type && image_Type2Fourcc(type))
 473             codec = image_Type2Fourcc(type);
 474
 475         const int override_width  = var_GetInteger(vout, "snapshot-width");
 476         const int override_height = var_GetInteger(vout, "snapshot-height");
 477
 478         if (picture_Export(VLC_OBJECT(vout), image_dst, fmt,
 479                            picture, codec, override_width, override_height)) {
 480             msg_Err(vout, "Failed to convert image for snapshot");
 481             picture_Release(picture);
 482             return VLC_EGENERIC;
 483         }
 484     }
 485     if (picture_dst)
 486         *picture_dst = picture;
 487     else
 488         picture_Release(picture);
 489     return VLC_SUCCESS;
 490 }
 491
 492 /* vout_Control* are usable by anyone at anytime */
 493 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 494 {
 495     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 496                           fullscreen);
 497 }
 498 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 499 {
 500     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 501                           is_on_top);
 502 }
 503 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 504 {
 505     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 506                           is_filled);
 507 }
 508 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 509 {
 510     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 511                           num, den);
 512 }
 513 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 514                                          unsigned num, unsigned den)
 515 {
 516     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 517                           num, den);
 518 }
 519 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 520                                  unsigned num, unsigned den)
 521 {
 522     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 523                           num, den);
 524 }
 525 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 526                                   int x, int y, int width, int height)
 527 {
 528     vout_control_cmd_t cmd;
 529     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 530     cmd.u.window.x      = __MAX(x, 0);
 531     cmd.u.window.y      = __MAX(y, 0);
 532     cmd.u.window.width  = __MAX(width, 0);
 533     cmd.u.window.height = __MAX(height, 0);
 534
 535     vout_control_Push(&vout->p->control, &cmd);
 536 }
 537 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 538                                   int left, int top, int right, int bottom)
 539 {
 540     vout_control_cmd_t cmd;
 541     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 542     cmd.u.border.left   = __MAX(left, 0);
 543     cmd.u.border.top    = __MAX(top, 0);
 544     cmd.u.border.right  = __MAX(right, 0);
 545     cmd.u.border.bottom = __MAX(bottom, 0);
 546
 547     vout_control_Push(&vout->p->control, &cmd);
 548 }
 549 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 550 {
 551     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 552                             filters);
 553 }
 554 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 555 {
 556     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 557                             filters);
 558 }
 559 void vout_ControlChangeSubMargin(vout_thread_t *vout, int margin)
 560 {
 561     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_MARGIN,
 562                              margin);
 563 }
 564
 565 /* */
 566 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 567 {
 568     /* Load configuration */
 569     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 570     cfg->display.title = title;
 571     const int display_width = var_CreateGetInteger(vout, "width");
 572     const int display_height = var_CreateGetInteger(vout, "height");
 573     cfg->display.width   = display_width > 0  ? display_width  : 0;
 574     cfg->display.height  = display_height > 0 ? display_height : 0;
 575     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 576     unsigned msar_num, msar_den;
 577     if (var_InheritURational(vout, &msar_num, &msar_den, "monitor-par") ||
 578         msar_num <= 0 || msar_den <= 0) {
 579         msar_num = 1;
 580         msar_den = 1;
 581     }
 582     cfg->display.sar.num = msar_num;
 583     cfg->display.sar.den = msar_den;
 584     unsigned zoom_den = 1000;
 585     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 586     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 587     cfg->zoom.num = zoom_num;
 588     cfg->zoom.den = zoom_den;
 589     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 590     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 591     const int align_mask = var_CreateGetInteger(vout, "align");
 592     if (align_mask & 0x1)
 593         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 594     else if (align_mask & 0x2)
 595         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 596     if (align_mask & 0x4)
 597         cfg->align.vertical = VOUT_DISPLAY_ALIGN_TOP;
 598     else if (align_mask & 0x8)
 599         cfg->align.vertical = VOUT_DISPLAY_ALIGN_BOTTOM;
 600 }
 601
 602 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 603                                       const vout_window_cfg_t *cfg)
 604 {
 605     VLC_UNUSED(vd);
 606     vout_window_cfg_t cfg_override = *cfg;
 607
 608     if (!var_InheritBool( vout, "embedded-video"))
 609         cfg_override.is_standalone = true;
 610
 611     if (vout->p->window.is_unused && vout->p->window.object) {
 612         assert(!vout->p->splitter_name);
 613         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 614             cfg_override.type           == vout->p->window.cfg.type) {
 615             /* Reuse the stored window */
 616             msg_Dbg(vout, "Reusing previous vout window");
 617             vout_window_t *window = vout->p->window.object;
 618             if (cfg_override.width  != vout->p->window.cfg.width ||
 619                 cfg_override.height != vout->p->window.cfg.height)
 620                 vout_window_SetSize(window,
 621                                     cfg_override.width, cfg_override.height);
 622             vout->p->window.is_unused = false;
 623             vout->p->window.cfg       = cfg_override;
 624             return window;
 625         }
 626
 627         vout_window_Delete(vout->p->window.object);
 628         vout->p->window.is_unused = true;
 629         vout->p->window.object    = NULL;
 630     }
 631
 632     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), "$window",
 633                                             &cfg_override);
 634     if (!window)
 635         return NULL;
 636     if (!vout->p->splitter_name) {
 637         vout->p->window.is_unused = false;
 638         vout->p->window.cfg       = cfg_override;
 639         vout->p->window.object    = window;
 640     }
 641     return window;
 642 }
 643
 644 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 645                               vout_window_t *window)
 646 {
 647     VLC_UNUSED(vd);
 648     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 649         vout->p->window.is_unused = true;
 650     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 651         vout_window_Delete(vout->p->window.object);
 652         vout->p->window.is_unused = true;
 653         vout->p->window.object    = NULL;
 654     } else if (window) {
 655         vout_window_Delete(window);
 656     }
 657 }
 658
 659 /* */
 660 static picture_t *VoutVideoFilterInteractiveNewPicture(filter_t *filter)
 661 {
 662     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 663
 664     picture_t *picture = picture_pool_Get(vout->p->private_pool);
 665     if (picture) {
 666         picture_Reset(picture);
 667         VideoFormatCopyCropAr(&picture->format, &filter->fmt_out.video);
 668     }
 669     return picture;
 670 }
 671 static picture_t *VoutVideoFilterStaticNewPicture(filter_t *filter)
 672 {
 673     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 674
 675     vlc_assert_locked(&vout->p->filter.lock);
 676     if (filter_chain_GetLength(vout->p->filter.chain_interactive) == 0)
 677         return VoutVideoFilterInteractiveNewPicture(filter);
 678
 679     return picture_NewFromFormat(&filter->fmt_out.video);
 680 }
 681 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 682 {
 683     VLC_UNUSED(filter);
 684     picture_Release(picture);
 685 }
 686 static int VoutVideoFilterStaticAllocationSetup(filter_t *filter, void *data)
 687 {
 688     filter->pf_video_buffer_new = VoutVideoFilterStaticNewPicture;
 689     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 690     filter->p_owner             = data; /* vout */
 691     return VLC_SUCCESS;
 692 }
 693 static int VoutVideoFilterInteractiveAllocationSetup(filter_t *filter, void *data)
 694 {
 695     filter->pf_video_buffer_new = VoutVideoFilterInteractiveNewPicture;
 696     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 697     filter->p_owner             = data; /* vout */
 698     return VLC_SUCCESS;
 699 }
 700 static void ThreadFilterFlush(vout_thread_t *vout, bool is_locked)
 701 {
 702     if (vout->p->displayed.current)
 703         picture_Release( vout->p->displayed.current );
 704     vout->p->displayed.current = NULL;
 705
 706     if (vout->p->displayed.next)
 707         picture_Release( vout->p->displayed.next );
 708     vout->p->displayed.next = NULL;
 709
 710     if (!is_locked)
 711         vlc_mutex_lock(&vout->p->filter.lock);
 712     filter_chain_VideoFlush(vout->p->filter.chain_static);
 713     filter_chain_VideoFlush(vout->p->filter.chain_interactive);
 714     if (!is_locked)
 715         vlc_mutex_unlock(&vout->p->filter.lock);
 716 }
 717
 718 typedef struct {
 719     char           *name;
 720     config_chain_t *cfg;
 721 } vout_filter_t;
 722
 723 static void ThreadChangeFilters(vout_thread_t *vout,
 724                                 const video_format_t *source,
 725                                 const char *filters,
 726                                 bool is_locked)
 727 {
 728     ThreadFilterFlush(vout, is_locked);
 729
 730     vlc_array_t array_static;
 731     vlc_array_t array_interactive;
 732
 733     vlc_array_init(&array_static);
 734     vlc_array_init(&array_interactive);
 735     char *current = filters ? strdup(filters) : NULL;
 736     while (current) {
 737         config_chain_t *cfg;
 738         char *name;
 739         char *next = config_ChainCreate(&name, &cfg, current);
 740
 741         if (name && *name) {
 742             vout_filter_t *e = xmalloc(sizeof(*e));
 743             e->name = name;
 744             e->cfg  = cfg;
 745             if (!strcmp(e->name, "deinterlace") ||
 746                 !strcmp(e->name, "postproc")) {
 747                 vlc_array_append(&array_static, e);
 748             } else {
 749                 vlc_array_append(&array_interactive, e);
 750             }
 751         } else {
 752             if (cfg)
 753                 config_ChainDestroy(cfg);
 754             free(name);
 755         }
 756         free(current);
 757         current = next;
 758     }
 759
 760     if (!is_locked)
 761         vlc_mutex_lock(&vout->p->filter.lock);
 762
 763     es_format_t fmt_target;
 764     es_format_InitFromVideo(&fmt_target, source ? source : &vout->p->filter.format);
 765
 766     es_format_t fmt_current = fmt_target;
 767
 768     for (int a = 0; a < 2; a++) {
 769         vlc_array_t    *array = a == 0 ? &array_static :
 770                                          &array_interactive;
 771         filter_chain_t *chain = a == 0 ? vout->p->filter.chain_static :
 772                                          vout->p->filter.chain_interactive;
 773
 774         filter_chain_Reset(chain, &fmt_current, &fmt_current);
 775         for (int i = 0; i < vlc_array_count(array); i++) {
 776             vout_filter_t *e = vlc_array_item_at_index(array, i);
 777             msg_Dbg(vout, "Adding '%s' as %s", e->name, a == 0 ? "static" : "interactive");
 778             if (!filter_chain_AppendFilter(chain, e->name, e->cfg, NULL, NULL)) {
 779                 msg_Err(vout, "Failed to add filter '%s'", e->name);
 780                 config_ChainDestroy(e->cfg);
 781             }
 782             free(e->name);
 783             free(e);
 784         }
 785         fmt_current = *filter_chain_GetFmtOut(chain);
 786         vlc_array_clear(array);
 787     }
 788     VideoFormatCopyCropAr(&fmt_target.video, &fmt_current.video);
 789     if (!es_format_IsSimilar(&fmt_current, &fmt_target)) {
 790         msg_Dbg(vout, "Adding a filter to compensate for format changes");
 791         if (!filter_chain_AppendFilter(vout->p->filter.chain_interactive, NULL, NULL,
 792                                        &fmt_current, &fmt_target)) {
 793             msg_Err(vout, "Failed to compensate for the format changes, removing all filters");
 794             filter_chain_Reset(vout->p->filter.chain_static,      &fmt_target, &fmt_target);
 795             filter_chain_Reset(vout->p->filter.chain_interactive, &fmt_target, &fmt_target);
 796         }
 797     }
 798
 799     if (vout->p->filter.configuration != filters) {
 800         free(vout->p->filter.configuration);
 801         vout->p->filter.configuration = filters ? strdup(filters) : NULL;
 802     }
 803     if (source) {
 804         video_format_Clean(&vout->p->filter.format);
 805         video_format_Copy(&vout->p->filter.format, source);
 806     }
 807
 808     if (!is_locked)
 809         vlc_mutex_unlock(&vout->p->filter.lock);
 810 }
 811
 812
 813 /* */
 814 static int ThreadDisplayPreparePicture(vout_thread_t *vout, bool reuse, bool is_late_dropped)
 815 {
 816     int lost_count = 0;
 817
 818     vlc_mutex_lock(&vout->p->filter.lock);
 819
 820     picture_t *picture = filter_chain_VideoFilter(vout->p->filter.chain_static, NULL);
 821     assert(!reuse || !picture);
 822
 823     while (!picture) {
 824         picture_t *decoded;
 825         if (reuse && vout->p->displayed.decoded) {
 826             decoded = picture_Hold(vout->p->displayed.decoded);
 827         } else {
 828             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 829             if (is_late_dropped && decoded && !decoded->b_force) {
 830                 const mtime_t predicted = mdate() + 0; /* TODO improve */
 831                 const mtime_t late = predicted - decoded->date;
 832                 if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 833                     msg_Warn(vout, "picture is too late to be displayed (missing %d ms)", (int)(late/1000));
 834                     picture_Release(decoded);
 835                     lost_count++;
 836                     continue;
 837                 } else if (late > 0) {
 838                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 839                 }
 840             }
 841             if (decoded &&
 842                 !VideoFormatIsCropArEqual(&decoded->format, &vout->p->filter.format))
 843                 ThreadChangeFilters(vout, &decoded->format, vout->p->filter.configuration, true);
 844         }
 845         if (!decoded)
 846             break;
 847         reuse = false;
 848
 849         if (vout->p->displayed.decoded)
 850             picture_Release(vout->p->displayed.decoded);
 851
 852         vout->p->displayed.decoded       = picture_Hold(decoded);
 853         vout->p->displayed.timestamp     = decoded->date;
 854         vout->p->displayed.is_interlaced = !decoded->b_progressive;
 855         vout->p->displayed.qtype         = decoded->i_qtype;
 856
 857         picture = filter_chain_VideoFilter(vout->p->filter.chain_static, decoded);
 858     }
 859
 860     vlc_mutex_unlock(&vout->p->filter.lock);
 861
 862     vout_statistic_Update(&vout->p->statistic, 0, lost_count);
 863     if (!picture)
 864         return VLC_EGENERIC;
 865
 866     assert(!vout->p->displayed.next);
 867     if (!vout->p->displayed.current)
 868         vout->p->displayed.current = picture;
 869     else
 870         vout->p->displayed.next    = picture;
 871     return VLC_SUCCESS;
 872 }
 873
 874 static int ThreadDisplayRenderPicture(vout_thread_t *vout, bool is_forced)
 875 {
 876     vout_thread_sys_t *sys = vout->p;
 877     vout_display_t *vd = vout->p->display.vd;
 878
 879     picture_t *torender = picture_Hold(vout->p->displayed.current);
 880
 881     vout_chrono_Start(&vout->p->render);
 882
 883     vlc_mutex_lock(&vout->p->filter.lock);
 884     picture_t *filtered = filter_chain_VideoFilter(vout->p->filter.chain_interactive, torender);
 885     vlc_mutex_unlock(&vout->p->filter.lock);
 886
 887     if (!filtered)
 888         return VLC_EGENERIC;
 889
 890     if (filtered->date != vout->p->displayed.current->date)
 891         msg_Warn(vout, "Unsupported timestamp modifications done by chain_interactive");
 892
 893     /*
 894      * Get the subpicture to be displayed
 895      */
 896     const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 897     mtime_t render_subtitle_date;
 898     if (vout->p->pause.is_on)
 899         render_subtitle_date = vout->p->pause.date;
 900     else
 901         render_subtitle_date = filtered->date > 1 ? filtered->date : mdate();
 902     mtime_t render_osd_date = mdate(); /* FIXME wrong */
 903
 904     /*
 905      * Get the subpicture to be displayed
 906      */
 907     const bool do_dr_spu = !do_snapshot &&
 908                            vd->info.subpicture_chromas &&
 909                            *vd->info.subpicture_chromas != 0;
 910     const bool do_early_spu = true; /* TODO */
 911     const vlc_fourcc_t *subpicture_chromas;
 912     video_format_t fmt_spu;
 913     if (do_dr_spu) {
 914         fmt_spu = vd->source; /* TODO improve */
 915         subpicture_chromas = vd->info.subpicture_chromas;
 916     } else {
 917         if (do_early_spu) {
 918             fmt_spu = vd->source;
 919         } else {
 920             fmt_spu = vd->fmt;
 921             fmt_spu.i_sar_num = vd->cfg->display.sar.num;
 922             fmt_spu.i_sar_den = vd->cfg->display.sar.den;
 923         }
 924         subpicture_chromas = NULL;
 925
 926         if (vout->p->spu_blend &&
 927             vout->p->spu_blend->fmt_out.video.i_chroma != fmt_spu.i_chroma) {
 928             filter_DeleteBlend(vout->p->spu_blend);
 929             vout->p->spu_blend = NULL;
 930             vout->p->spu_blend_chroma = 0;
 931         }
 932         if (!vout->p->spu_blend && vout->p->spu_blend_chroma != fmt_spu.i_chroma) {
 933             vout->p->spu_blend_chroma = fmt_spu.i_chroma;
 934             vout->p->spu_blend = filter_NewBlend(VLC_OBJECT(vout), &fmt_spu);
 935             if (!vout->p->spu_blend)
 936                 msg_Err(vout, "Failed to create blending filter, OSD/Subtitles will not work");
 937         }
 938     }
 939
 940     subpicture_t *subpic = spu_Render(vout->p->spu,
 941                                       subpicture_chromas, &fmt_spu,
 942                                       &vd->source,
 943                                       render_subtitle_date, render_osd_date,
 944                                       do_snapshot);
 945     /*
 946      * Perform rendering
 947      *
 948      * We have to:
 949      * - be sure to end up with a direct buffer.
 950      * - blend subtitles, and in a fast access buffer
 951      */
 952     bool is_direct;
 953     picture_t *todisplay;
 954
 955     if (filtered && do_early_spu && vout->p->spu_blend && subpic) {
 956         if (vd->info.is_slow) {
 957             is_direct = false;
 958             todisplay = picture_NewFromFormat(&vd->source); /* FIXME a pool ? */
 959         } else {
 960             is_direct = true;
 961             todisplay = picture_pool_Get(vout->p->display_pool);
 962         }
 963         if (todisplay) {
 964             VideoFormatCopyCropAr(&todisplay->format, &filtered->format);
 965             picture_Copy(todisplay, filtered);
 966             picture_BlendSubpicture(todisplay, vout->p->spu_blend, subpic);
 967         }
 968         picture_Release(filtered);
 969         subpicture_Delete(subpic);
 970         subpic = NULL;
 971
 972         if (!todisplay)
 973             return VLC_EGENERIC;
 974     } else {
 975         is_direct = vout->p->decoder_pool == vout->p->display_pool;
 976         todisplay = filtered;
 977     }
 978
 979     picture_t *direct;
 980     if (!is_direct && todisplay) {
 981         direct = picture_pool_Get(vout->p->display_pool);
 982         if (direct) {
 983             VideoFormatCopyCropAr(&direct->format, &todisplay->format);
 984             picture_Copy(direct, todisplay);
 985         }
 986         picture_Release(todisplay);
 987     } else {
 988         direct = todisplay;
 989     }
 990
 991     if (!direct) {
 992         if (subpic)
 993             subpicture_Delete(subpic);
 994         return VLC_EGENERIC;
 995     }
 996
 997     /*
 998      * Take a snapshot if requested
 999      */
1000     if (do_snapshot)
1001         vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
1002
1003     /* Render the direct buffer */
1004     assert(vout_IsDisplayFiltered(vd) == !sys->display.use_dr);
1005     vout_UpdateDisplaySourceProperties(vd, &direct->format);
1006     if (sys->display.use_dr) {
1007         vout_display_Prepare(vd, direct, subpic);
1008     } else {
1009         sys->display.filtered = vout_FilterDisplay(vd, direct);
1010         if (sys->display.filtered) {
1011             if (!do_dr_spu && !do_early_spu && vout->p->spu_blend && subpic)
1012                 picture_BlendSubpicture(sys->display.filtered, vout->p->spu_blend, subpic);
1013             vout_display_Prepare(vd, sys->display.filtered, do_dr_spu ? subpic : NULL);
1014         }
1015         if (!do_dr_spu && subpic)
1016             subpicture_Delete(subpic);
1017     }
1018
1019     vout_chrono_Stop(&vout->p->render);
1020 #if 0
1021         {
1022         static int i = 0;
1023         if (((i++)%10) == 0)
1024             msg_Info(vout, "render: avg %d ms var %d ms",
1025                      (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
1026         }
1027 #endif
1028
1029     /* Wait the real date (for rendering jitter) */
1030 #if 0
1031     mtime_t delay = direct->date - mdate();
1032     if (delay < 1000)
1033         msg_Warn(vout, "picture is late (%lld ms)", delay / 1000);
1034 #endif
1035     if (!is_forced)
1036         mwait(direct->date);
1037
1038     /* Display the direct buffer returned by vout_RenderPicture */
1039     vout->p->displayed.date = mdate();
1040     vout_display_Display(vd,
1041                          sys->display.filtered ? sys->display.filtered
1042                                                 : direct,
1043                          subpic);
1044     sys->display.filtered = NULL;
1045
1046     vout_statistic_Update(&vout->p->statistic, 1, 0);
1047
1048     return VLC_SUCCESS;
1049 }
1050
1051 static int ThreadDisplayPicture(vout_thread_t *vout,
1052                                 bool now, mtime_t *deadline)
1053 {
1054     bool is_late_dropped = vout->p->is_late_dropped && !vout->p->pause.is_on && !now;
1055     bool first = !vout->p->displayed.current;
1056     if (first && ThreadDisplayPreparePicture(vout, true, is_late_dropped)) /* FIXME not sure it is ok */
1057         return VLC_EGENERIC;
1058     if (!vout->p->pause.is_on || now) {
1059         while (!vout->p->displayed.next) {
1060             if (ThreadDisplayPreparePicture(vout, false, is_late_dropped)) {
1061                 break;
1062             }
1063         }
1064     }
1065
1066     const mtime_t date = mdate();
1067     const mtime_t render_delay = vout_chrono_GetHigh(&vout->p->render) + VOUT_MWAIT_TOLERANCE;
1068
1069     mtime_t date_next = VLC_TS_INVALID;
1070     if (!vout->p->pause.is_on && vout->p->displayed.next)
1071         date_next = vout->p->displayed.next->date - render_delay;
1072
1073     /* FIXME/XXX we must redisplay the last decoded picture (because
1074      * of potential vout updated, or filters update or SPU update)
1075      * For now a high update period is needed but it coulmd be removed
1076      * if and only if:
1077      * - vout module emits events from theselves.
1078      * - *and* SPU is modified to emit an event or a deadline when needed.
1079      *
1080      * So it will be done latter.
1081      */
1082     mtime_t date_refresh = VLC_TS_INVALID;
1083     if (vout->p->displayed.date > VLC_TS_INVALID)
1084         date_refresh = vout->p->displayed.date + VOUT_REDISPLAY_DELAY - render_delay;
1085
1086     bool drop = now;
1087     if (date_next != VLC_TS_INVALID)
1088         drop |= date_next + 0 <= date;
1089
1090     bool refresh = false;
1091     if (date_refresh > VLC_TS_INVALID)
1092         refresh = date_refresh <= date;
1093
1094     if (!first && !refresh && !drop) {
1095         if (date_next != VLC_TS_INVALID && date_refresh != VLC_TS_INVALID)
1096             *deadline = __MIN(date_next, date_refresh);
1097         else if (date_next != VLC_TS_INVALID)
1098             *deadline = date_next;
1099         else if (date_refresh != VLC_TS_INVALID)
1100             *deadline = date_refresh;
1101         return VLC_EGENERIC;
1102     }
1103
1104     if (drop) {
1105         picture_Release(vout->p->displayed.current);
1106         vout->p->displayed.current = vout->p->displayed.next;
1107         vout->p->displayed.next    = NULL;
1108     }
1109     if (!vout->p->displayed.current)
1110         return VLC_EGENERIC;
1111
1112     bool is_forced = now || (!drop && refresh) || vout->p->displayed.current->b_force;
1113     return ThreadDisplayRenderPicture(vout, is_forced);
1114 }
1115
1116 static void ThreadManage(vout_thread_t *vout,
1117                          mtime_t *deadline,
1118                          vout_interlacing_support_t *interlacing,
1119                          vout_postprocessing_support_t *postprocessing)
1120 {
1121     vlc_mutex_lock(&vout->p->picture_lock);
1122
1123     *deadline = VLC_TS_INVALID;
1124     for (;;) {
1125         if (ThreadDisplayPicture(vout, false, deadline))
1126             break;
1127     }
1128
1129     const int  picture_qtype      = vout->p->displayed.qtype;
1130     const bool picture_interlaced = vout->p->displayed.is_interlaced;
1131
1132     vlc_mutex_unlock(&vout->p->picture_lock);
1133
1134     /* Post processing */
1135     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
1136
1137     /* Deinterlacing */
1138     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
1139
1140     vout_ManageWrapper(vout);
1141 }
1142
1143 static void ThreadDisplaySubpicture(vout_thread_t *vout,
1144                                     subpicture_t *subpicture)
1145 {
1146     spu_PutSubpicture(vout->p->spu, subpicture);
1147 }
1148
1149 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
1150 {
1151     spu_ClearChannel(vout->p->spu, channel);
1152 }
1153
1154 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
1155 {
1156     if (!vout->p->title.show)
1157         return;
1158
1159     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
1160                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
1161                  string);
1162 }
1163
1164 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
1165 {
1166     spu_ChangeFilters(vout->p->spu, filters);
1167 }
1168 static void ThreadChangeSubMargin(vout_thread_t *vout, int margin)
1169 {
1170     spu_ChangeMargin(vout->p->spu, margin);
1171 }
1172
1173 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
1174 {
1175     assert(!vout->p->pause.is_on || !is_paused);
1176
1177     if (vout->p->pause.is_on) {
1178         const mtime_t duration = date - vout->p->pause.date;
1179
1180         if (vout->p->step.timestamp > VLC_TS_INVALID)
1181             vout->p->step.timestamp += duration;
1182         if (vout->p->step.last > VLC_TS_INVALID)
1183             vout->p->step.last += duration;
1184         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
1185         if (vout->p->displayed.decoded)
1186             vout->p->displayed.decoded->date += duration;
1187         spu_OffsetSubtitleDate(vout->p->spu, duration);
1188
1189         ThreadFilterFlush(vout, false);
1190     } else {
1191         vout->p->step.timestamp = VLC_TS_INVALID;
1192         vout->p->step.last      = VLC_TS_INVALID;
1193     }
1194     vout->p->pause.is_on = is_paused;
1195     vout->p->pause.date  = date;
1196 }
1197
1198 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
1199 {
1200     vout->p->step.timestamp = VLC_TS_INVALID;
1201     vout->p->step.last      = VLC_TS_INVALID;
1202
1203     ThreadFilterFlush(vout, false); /* FIXME too much */
1204
1205     picture_t *last = vout->p->displayed.decoded;
1206     if (last) {
1207         if (( below && last->date <= date) ||
1208             (!below && last->date >= date)) {
1209             picture_Release(last);
1210
1211             vout->p->displayed.decoded   = NULL;
1212             vout->p->displayed.date      = VLC_TS_INVALID;
1213             vout->p->displayed.timestamp = VLC_TS_INVALID;
1214         }
1215     }
1216
1217     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
1218 }
1219
1220 static void ThreadReset(vout_thread_t *vout)
1221 {
1222     ThreadFlush(vout, true, INT64_MAX);
1223     if (vout->p->decoder_pool)
1224         picture_pool_NonEmpty(vout->p->decoder_pool, true);
1225     vout->p->pause.is_on = false;
1226     vout->p->pause.date  = mdate();
1227 }
1228
1229 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
1230 {
1231     *duration = 0;
1232
1233     if (vout->p->step.last <= VLC_TS_INVALID)
1234         vout->p->step.last = vout->p->displayed.timestamp;
1235
1236     mtime_t dummy;
1237     if (ThreadDisplayPicture(vout, true, &dummy))
1238         return;
1239
1240     vout->p->step.timestamp = vout->p->displayed.timestamp;
1241
1242     if (vout->p->step.last > VLC_TS_INVALID &&
1243         vout->p->step.timestamp > vout->p->step.last) {
1244         *duration = vout->p->step.timestamp - vout->p->step.last;
1245         vout->p->step.last = vout->p->step.timestamp;
1246         /* TODO advance subpicture by the duration ... */
1247     }
1248 }
1249
1250 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
1251 {
1252     /* FIXME not sure setting "fullscreen" is good ... */
1253     var_SetBool(vout, "fullscreen", fullscreen);
1254     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
1255 }
1256
1257 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
1258 {
1259     vout_SetWindowState(vout->p->display.vd,
1260                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
1261                                     VOUT_WINDOW_STATE_NORMAL);
1262 }
1263
1264 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
1265 {
1266     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
1267 }
1268
1269 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
1270 {
1271     if (num * 10 < den) {
1272         num = den;
1273         den *= 10;
1274     } else if (num > den * 10) {
1275         num = den * 10;
1276     }
1277
1278     vout_SetDisplayZoom(vout->p->display.vd, num, den);
1279 }
1280
1281 static void ThreadChangeAspectRatio(vout_thread_t *vout,
1282                                     unsigned num, unsigned den)
1283 {
1284     vout_SetDisplayAspect(vout->p->display.vd, num, den);
1285 }
1286
1287
1288 static void ThreadExecuteCropWindow(vout_thread_t *vout,
1289                                     unsigned x, unsigned y,
1290                                     unsigned width, unsigned height)
1291 {
1292     vout_SetDisplayCrop(vout->p->display.vd, 0, 0,
1293                         x, y, width, height);
1294 }
1295 static void ThreadExecuteCropBorder(vout_thread_t *vout,
1296                                     unsigned left, unsigned top,
1297                                     unsigned right, unsigned bottom)
1298 {
1299     msg_Err(vout, "ThreadExecuteCropBorder %d.%d %dx%d", left, top, right, bottom);
1300     vout_SetDisplayCrop(vout->p->display.vd, 0, 0,
1301                         left, top, -(int)right, -(int)bottom);
1302 }
1303
1304 static void ThreadExecuteCropRatio(vout_thread_t *vout,
1305                                    unsigned num, unsigned den)
1306 {
1307     vout_SetDisplayCrop(vout->p->display.vd, num, den,
1308                         0, 0, 0, 0);
1309 }
1310
1311 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
1312 {
1313     vlc_mouse_Init(&vout->p->mouse);
1314     vout->p->decoder_fifo = picture_fifo_New();
1315     vout->p->decoder_pool = NULL;
1316     vout->p->display_pool = NULL;
1317     vout->p->private_pool = NULL;
1318
1319     vout->p->filter.configuration = NULL;
1320     video_format_Copy(&vout->p->filter.format, &vout->p->original);
1321     vout->p->filter.chain_static =
1322         filter_chain_New( vout, "video filter2", true,
1323                           VoutVideoFilterStaticAllocationSetup, NULL, vout);
1324     vout->p->filter.chain_interactive =
1325         filter_chain_New( vout, "video filter2", true,
1326                           VoutVideoFilterInteractiveAllocationSetup, NULL, vout);
1327
1328     vout_display_state_t state_default;
1329     if (!state) {
1330         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
1331         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
1332                                                                            VOUT_WINDOW_STATE_NORMAL;
1333         state_default.sar.num = 0;
1334         state_default.sar.den = 0;
1335
1336         state = &state_default;
1337     }
1338
1339     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
1340         return VLC_EGENERIC;
1341     if (vout_InitWrapper(vout))
1342         return VLC_EGENERIC;
1343     assert(vout->p->decoder_pool);
1344
1345     vout->p->displayed.current       = NULL;
1346     vout->p->displayed.next          = NULL;
1347     vout->p->displayed.decoded       = NULL;
1348     vout->p->displayed.date          = VLC_TS_INVALID;
1349     vout->p->displayed.timestamp     = VLC_TS_INVALID;
1350     vout->p->displayed.qtype         = QTYPE_NONE;
1351     vout->p->displayed.is_interlaced = false;
1352
1353     vout->p->step.last               = VLC_TS_INVALID;
1354     vout->p->step.timestamp          = VLC_TS_INVALID;
1355
1356     vout->p->spu_blend_chroma        = 0;
1357     vout->p->spu_blend               = NULL;
1358
1359     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
1360     return VLC_SUCCESS;
1361 }
1362
1363 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1364 {
1365     if (vout->p->spu_blend)
1366         filter_DeleteBlend(vout->p->spu_blend);
1367
1368     /* Destroy translation tables */
1369     if (vout->p->display.vd) {
1370         if (vout->p->decoder_pool) {
1371             ThreadFlush(vout, true, INT64_MAX);
1372             vout_EndWrapper(vout);
1373         }
1374         vout_CloseWrapper(vout, state);
1375     }
1376
1377     /* Destroy the video filters2 */
1378     filter_chain_Delete(vout->p->filter.chain_interactive);
1379     filter_chain_Delete(vout->p->filter.chain_static);
1380     video_format_Clean(&vout->p->filter.format);
1381     free(vout->p->filter.configuration);
1382
1383     if (vout->p->decoder_fifo)
1384         picture_fifo_Delete(vout->p->decoder_fifo);
1385     assert(!vout->p->decoder_pool);
1386 }
1387
1388 static void ThreadInit(vout_thread_t *vout)
1389 {
1390     vout->p->window.is_unused = true;
1391     vout->p->window.object    = NULL;
1392     vout->p->dead             = false;
1393     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1394     vout->p->pause.is_on      = false;
1395     vout->p->pause.date       = VLC_TS_INVALID;
1396
1397     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1398 }
1399
1400 static void ThreadClean(vout_thread_t *vout)
1401 {
1402     if (vout->p->window.object) {
1403         assert(vout->p->window.is_unused);
1404         vout_window_Delete(vout->p->window.object);
1405     }
1406     vout_chrono_Clean(&vout->p->render);
1407     vout->p->dead = true;
1408     vout_control_Dead(&vout->p->control);
1409 }
1410
1411 static int ThreadReinit(vout_thread_t *vout,
1412                         const vout_configuration_t *cfg)
1413 {
1414     video_format_t original;
1415     if (VoutValidateFormat(&original, cfg->fmt)) {
1416         ThreadStop(vout, NULL);
1417         ThreadClean(vout);
1418         return VLC_EGENERIC;
1419     }
1420     /* We ignore crop/ar changes at this point, they are dynamically supported */
1421     VideoFormatCopyCropAr(&vout->p->original, &original);
1422     if (video_format_IsSimilar(&original, &vout->p->original)) {
1423         if (cfg->dpb_size <= vout->p->dpb_size)
1424             return VLC_SUCCESS;
1425         msg_Warn(vout, "DPB need to be increased");
1426     }
1427
1428     vout_display_state_t state;
1429     memset(&state, 0, sizeof(state));
1430
1431     ThreadStop(vout, &state);
1432
1433     if (!state.cfg.is_fullscreen) {
1434         state.cfg.display.width  = 0;
1435         state.cfg.display.height = 0;
1436     }
1437     state.sar.num = 0;
1438     state.sar.den = 0;
1439     /* FIXME current vout "variables" are not in sync here anymore
1440      * and I am not sure what to do */
1441
1442     vout->p->original = original;
1443     vout->p->dpb_size = cfg->dpb_size;
1444     if (ThreadStart(vout, &state)) {
1445         ThreadClean(vout);
1446         return VLC_EGENERIC;
1447     }
1448     return VLC_SUCCESS;
1449 }
1450
1451 /*****************************************************************************
1452  * Thread: video output thread
1453  *****************************************************************************
1454  * Video output thread. This function does only returns when the thread is
1455  * terminated. It handles the pictures arriving in the video heap and the
1456  * display device events.
1457  *****************************************************************************/
1458 static void *Thread(void *object)
1459 {
1460     vout_thread_t *vout = object;
1461
1462     vout_interlacing_support_t interlacing = {
1463         .is_interlaced = false,
1464         .date = mdate(),
1465     };
1466     vout_postprocessing_support_t postprocessing = {
1467         .qtype = QTYPE_NONE,
1468     };
1469
1470     mtime_t deadline = VLC_TS_INVALID;
1471     for (;;) {
1472         vout_control_cmd_t cmd;
1473
1474         /* FIXME remove thoses ugly timeouts
1475          */
1476         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1477             switch(cmd.type) {
1478             case VOUT_CONTROL_INIT:
1479                 ThreadInit(vout);
1480                 if (ThreadStart(vout, NULL)) {
1481                     ThreadStop(vout, NULL);
1482                     ThreadClean(vout);
1483                     return NULL;
1484                 }
1485                 break;
1486             case VOUT_CONTROL_CLEAN:
1487                 ThreadStop(vout, NULL);
1488                 ThreadClean(vout);
1489                 return NULL;
1490             case VOUT_CONTROL_REINIT:
1491                 if (ThreadReinit(vout, cmd.u.cfg))
1492                     return NULL;
1493                 break;
1494             case VOUT_CONTROL_SUBPICTURE:
1495                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1496                 cmd.u.subpicture = NULL;
1497                 break;
1498             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1499                 ThreadFlushSubpicture(vout, cmd.u.integer);
1500                 break;
1501             case VOUT_CONTROL_OSD_TITLE:
1502                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1503                 break;
1504             case VOUT_CONTROL_CHANGE_FILTERS:
1505                 ThreadChangeFilters(vout, NULL, cmd.u.string, false);
1506                 break;
1507             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1508                 ThreadChangeSubFilters(vout, cmd.u.string);
1509                 break;
1510             case VOUT_CONTROL_CHANGE_SUB_MARGIN:
1511                 ThreadChangeSubMargin(vout, cmd.u.integer);
1512                 break;
1513             case VOUT_CONTROL_PAUSE:
1514                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1515                 break;
1516             case VOUT_CONTROL_FLUSH:
1517                 ThreadFlush(vout, false, cmd.u.time);
1518                 break;
1519             case VOUT_CONTROL_RESET:
1520                 ThreadReset(vout);
1521                 break;
1522             case VOUT_CONTROL_STEP:
1523                 ThreadStep(vout, cmd.u.time_ptr);
1524                 break;
1525             case VOUT_CONTROL_FULLSCREEN:
1526                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1527                 break;
1528             case VOUT_CONTROL_ON_TOP:
1529                 ThreadChangeOnTop(vout, cmd.u.boolean);
1530                 break;
1531             case VOUT_CONTROL_DISPLAY_FILLED:
1532                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1533                 break;
1534             case VOUT_CONTROL_ZOOM:
1535                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1536                 break;
1537             case VOUT_CONTROL_ASPECT_RATIO:
1538                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1539                 break;
1540            case VOUT_CONTROL_CROP_RATIO:
1541                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1542                 break;
1543             case VOUT_CONTROL_CROP_WINDOW:
1544                 ThreadExecuteCropWindow(vout,
1545                                         cmd.u.window.x, cmd.u.window.y,
1546                                         cmd.u.window.width, cmd.u.window.height);
1547                 break;
1548             case VOUT_CONTROL_CROP_BORDER:
1549                 ThreadExecuteCropBorder(vout,
1550                                         cmd.u.border.left,  cmd.u.border.top,
1551                                         cmd.u.border.right, cmd.u.border.bottom);
1552                 break;
1553             default:
1554                 break;
1555             }
1556             vout_control_cmd_Clean(&cmd);
1557         }
1558
1559         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1560     }
1561 }
1562