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 VLC authors and VideoLAN
   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 it
  16  * under the terms of the GNU Lesser General Public License as published by
  17  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU Lesser General Public License
  26  * along with this program; if not, write to the Free Software Foundation,
  27  * 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 "display.h"
  53
  54 /*****************************************************************************
  55  * Local prototypes
  56  *****************************************************************************/
  57 static void *Thread(void *);
  58 static void VoutDestructor(vlc_object_t *);
  59
  60 /* Maximum delay between 2 displayed pictures.
  61  * XXX it is needed for now but should be removed in the long term.
  62  */
  63 #define VOUT_REDISPLAY_DELAY (INT64_C(80000))
  64
  65 /**
  66  * Late pictures having a delay higher than this value are thrashed.
  67  */
  68 #define VOUT_DISPLAY_LATE_THRESHOLD (INT64_C(20000))
  69
  70 /* Better be in advance when awakening than late... */
  71 #define VOUT_MWAIT_TOLERANCE (INT64_C(4000))
  72
  73 /* */
  74 static int VoutValidateFormat(video_format_t *dst,
  75                               const video_format_t *src)
  76 {
  77     if (src->i_width <= 0  || src->i_width  > 8192 ||
  78         src->i_height <= 0 || src->i_height > 8192)
  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                                             "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     /* Initialize subpicture unit */
 147     vout->p->spu = spu_Create(vout);
 148
 149     /* Take care of some "interface/control" related initialisations */
 150     vout_IntfInit(vout);
 151
 152     vout->p->title.show     = var_InheritBool(vout, "video-title-show");
 153     vout->p->title.timeout  = var_InheritInteger(vout, "video-title-timeout");
 154     vout->p->title.position = var_InheritInteger(vout, "video-title-position");
 155
 156     /* Get splitter name if present */
 157     char *splitter_name = var_InheritString(vout, "video-splitter");
 158     if (splitter_name && *splitter_name) {
 159         vout->p->splitter_name = splitter_name;
 160     } else {
 161         free(splitter_name);
 162     }
 163
 164     /* */
 165     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 166
 167     /* */
 168     vlc_object_set_destructor(vout, VoutDestructor);
 169
 170     /* */
 171     if (vlc_clone(&vout->p->thread, Thread, vout,
 172                   VLC_THREAD_PRIORITY_OUTPUT)) {
 173         spu_Destroy(vout->p->spu);
 174         vlc_object_release(vout);
 175         return NULL;
 176     }
 177
 178     vout_control_WaitEmpty(&vout->p->control);
 179
 180     if (vout->p->dead) {
 181         msg_Err(vout, "video output creation failed");
 182         vout_CloseAndRelease(vout);
 183         return NULL;
 184     }
 185
 186     vout->p->input = cfg->input;
 187     if (vout->p->input)
 188         spu_Attach(vout->p->spu, vout->p->input, true);
 189
 190     return vout;
 191 }
 192
 193 #undef vout_Request
 194 vout_thread_t *vout_Request(vlc_object_t *object,
 195                               const vout_configuration_t *cfg)
 196 {
 197     vout_thread_t *vout = cfg->vout;
 198     if (cfg->change_fmt && !cfg->fmt) {
 199         if (vout)
 200             vout_CloseAndRelease(vout);
 201         return NULL;
 202     }
 203
 204     /* If a vout is provided, try reusing it */
 205     if (vout) {
 206         if (vout->p->input != cfg->input) {
 207             if (vout->p->input)
 208                 spu_Attach(vout->p->spu, vout->p->input, false);
 209             vout->p->input = cfg->input;
 210             if (vout->p->input)
 211                 spu_Attach(vout->p->spu, vout->p->input, true);
 212         }
 213
 214         if (cfg->change_fmt) {
 215             vout_control_cmd_t cmd;
 216             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 217             cmd.u.cfg = cfg;
 218
 219             vout_control_Push(&vout->p->control, &cmd);
 220             vout_control_WaitEmpty(&vout->p->control);
 221         }
 222
 223         if (!vout->p->dead) {
 224             msg_Dbg(object, "reusing provided vout");
 225             vout_IntfReinit(vout);
 226             return vout;
 227         }
 228         vout_CloseAndRelease(vout);
 229
 230         msg_Warn(object, "cannot reuse provided vout");
 231     }
 232     return VoutCreate(object, cfg);
 233 }
 234
 235 void vout_Close(vout_thread_t *vout)
 236 {
 237     assert(vout);
 238
 239     if (vout->p->input)
 240         spu_Attach(vout->p->spu, vout->p->input, false);
 241
 242     vout_snapshot_End(&vout->p->snapshot);
 243
 244     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 245     vlc_join(vout->p->thread, NULL);
 246
 247     vlc_mutex_lock(&vout->p->spu_lock);
 248     spu_Destroy(vout->p->spu);
 249     vout->p->spu = NULL;
 250     vlc_mutex_unlock(&vout->p->spu_lock);
 251 }
 252
 253 /* */
 254 static void VoutDestructor(vlc_object_t *object)
 255 {
 256     vout_thread_t *vout = (vout_thread_t *)object;
 257
 258     /* Make sure the vout was stopped first */
 259     //assert(!vout->p_module);
 260
 261     free(vout->p->splitter_name);
 262
 263     /* Destroy the locks */
 264     vlc_mutex_destroy(&vout->p->spu_lock);
 265     vlc_mutex_destroy(&vout->p->picture_lock);
 266     vlc_mutex_destroy(&vout->p->filter.lock);
 267     vout_control_Clean(&vout->p->control);
 268
 269     /* */
 270     vout_statistic_Clean(&vout->p->statistic);
 271
 272     /* */
 273     vout_snapshot_Clean(&vout->p->snapshot);
 274
 275     video_format_Clean(&vout->p->original);
 276 }
 277
 278 /* */
 279 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 280 {
 281     vout_control_cmd_t cmd;
 282     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 283     cmd.u.pause.is_on = is_paused;
 284     cmd.u.pause.date  = date;
 285     vout_control_Push(&vout->p->control, &cmd);
 286
 287     vout_control_WaitEmpty(&vout->p->control);
 288 }
 289
 290 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 291 {
 292     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 293 }
 294
 295 void vout_Flush(vout_thread_t *vout, mtime_t date)
 296 {
 297     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 298     vout_control_WaitEmpty(&vout->p->control);
 299 }
 300
 301 void vout_Reset(vout_thread_t *vout)
 302 {
 303     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 304     vout_control_WaitEmpty(&vout->p->control);
 305 }
 306
 307 bool vout_IsEmpty(vout_thread_t *vout)
 308 {
 309     vlc_mutex_lock(&vout->p->picture_lock);
 310
 311     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 312     if (picture)
 313         picture_Release(picture);
 314
 315     vlc_mutex_unlock(&vout->p->picture_lock);
 316
 317     return !picture;
 318 }
 319
 320 void vout_FixLeaks( vout_thread_t *vout )
 321 {
 322     vlc_mutex_lock(&vout->p->picture_lock);
 323
 324     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 325     if (!picture) {
 326         picture = picture_pool_Get(vout->p->decoder_pool);
 327     }
 328
 329     if (picture) {
 330         picture_Release(picture);
 331         /* Not all pictures has been displayed yet or some are
 332          * free */
 333         vlc_mutex_unlock(&vout->p->picture_lock);
 334         return;
 335     }
 336
 337     /* There is no reason that no pictures are available, force one
 338      * from the pool, becarefull with it though */
 339     msg_Err(vout, "pictures leaked, trying to workaround");
 340
 341     /* */
 342     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 343
 344     vlc_mutex_unlock(&vout->p->picture_lock);
 345 }
 346 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 347 {
 348     vout_control_cmd_t cmd;
 349     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 350     cmd.u.time_ptr = duration;
 351
 352     vout_control_Push(&vout->p->control, &cmd);
 353     vout_control_WaitEmpty(&vout->p->control);
 354 }
 355
 356 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 357 {
 358     assert(title);
 359     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 360 }
 361
 362 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 363 {
 364     vout_control_cmd_t cmd;
 365     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 366     cmd.u.subpicture = subpic;
 367
 368     vout_control_Push(&vout->p->control, &cmd);
 369 }
 370 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 371 {
 372     int channel = SPU_DEFAULT_CHANNEL;
 373
 374     vlc_mutex_lock(&vout->p->spu_lock);
 375     if (vout->p->spu)
 376         channel = spu_RegisterChannel(vout->p->spu);
 377     vlc_mutex_unlock(&vout->p->spu_lock);
 378
 379     return channel;
 380 }
 381 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 382 {
 383     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 384                              channel);
 385 }
 386
 387 /**
 388  * It retreives a picture from the vout or NULL if no pictures are
 389  * available yet.
 390  *
 391  * You MUST call vout_PutPicture or vout_ReleasePicture on it.
 392  *
 393  * You may use vout_HoldPicture(paired with vout_ReleasePicture) to keep a
 394  * read-only reference.
 395  */
 396 picture_t *vout_GetPicture(vout_thread_t *vout)
 397 {
 398     /* Get lock */
 399     vlc_mutex_lock(&vout->p->picture_lock);
 400     picture_t *picture = picture_pool_Get(vout->p->decoder_pool);
 401     if (picture) {
 402         picture_Reset(picture);
 403         VideoFormatCopyCropAr(&picture->format, &vout->p->original);
 404     }
 405     vlc_mutex_unlock(&vout->p->picture_lock);
 406
 407     return picture;
 408 }
 409
 410 /**
 411  * It gives to the vout a picture to be displayed.
 412  *
 413  * The given picture MUST comes from vout_GetPicture.
 414  *
 415  * Becareful, after vout_PutPicture is called, picture_t::p_next cannot be
 416  * read/used.
 417  */
 418 void vout_PutPicture(vout_thread_t *vout, picture_t *picture)
 419 {
 420     vlc_mutex_lock(&vout->p->picture_lock);
 421
 422     picture->p_next = NULL;
 423     picture_fifo_Push(vout->p->decoder_fifo, picture);
 424
 425     vlc_mutex_unlock(&vout->p->picture_lock);
 426
 427     vout_control_Wake(&vout->p->control);
 428 }
 429
 430 /**
 431  * It releases a picture retreived by vout_GetPicture.
 432  */
 433 void vout_ReleasePicture(vout_thread_t *vout, picture_t *picture)
 434 {
 435     vlc_mutex_lock(&vout->p->picture_lock);
 436
 437     picture_Release(picture);
 438
 439     vlc_mutex_unlock(&vout->p->picture_lock);
 440
 441     vout_control_Wake(&vout->p->control);
 442 }
 443
 444 /**
 445  * It increment the reference counter of a picture retreived by
 446  * vout_GetPicture.
 447  */
 448 void vout_HoldPicture(vout_thread_t *vout, picture_t *picture)
 449 {
 450     vlc_mutex_lock(&vout->p->picture_lock);
 451
 452     picture_Hold(picture);
 453
 454     vlc_mutex_unlock(&vout->p->picture_lock);
 455 }
 456
 457 /* */
 458 int vout_GetSnapshot(vout_thread_t *vout,
 459                      block_t **image_dst, picture_t **picture_dst,
 460                      video_format_t *fmt,
 461                      const char *type, mtime_t timeout)
 462 {
 463     picture_t *picture = vout_snapshot_Get(&vout->p->snapshot, timeout);
 464     if (!picture) {
 465         msg_Err(vout, "Failed to grab a snapshot");
 466         return VLC_EGENERIC;
 467     }
 468
 469     if (image_dst) {
 470         vlc_fourcc_t codec = VLC_CODEC_PNG;
 471         if (type && image_Type2Fourcc(type))
 472             codec = image_Type2Fourcc(type);
 473
 474         const int override_width  = var_InheritInteger(vout, "snapshot-width");
 475         const int override_height = var_InheritInteger(vout, "snapshot-height");
 476
 477         if (picture_Export(VLC_OBJECT(vout), image_dst, fmt,
 478                            picture, codec, override_width, override_height)) {
 479             msg_Err(vout, "Failed to convert image for snapshot");
 480             picture_Release(picture);
 481             return VLC_EGENERIC;
 482         }
 483     }
 484     if (picture_dst)
 485         *picture_dst = picture;
 486     else
 487         picture_Release(picture);
 488     return VLC_SUCCESS;
 489 }
 490
 491 void vout_ChangeAspectRatio( vout_thread_t *p_vout,
 492                              unsigned int i_num, unsigned int i_den )
 493 {
 494     vout_ControlChangeSampleAspectRatio( p_vout, i_num, i_den );
 495 }
 496
 497 /* vout_Control* are usable by anyone at anytime */
 498 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 499 {
 500     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 501                           fullscreen);
 502 }
 503 void vout_ControlChangeWindowState(vout_thread_t *vout, unsigned st)
 504 {
 505     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_WINDOW_STATE, st);
 506 }
 507 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 508 {
 509     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 510                           is_filled);
 511 }
 512 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 513 {
 514     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 515                           num, den);
 516 }
 517 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 518                                          unsigned num, unsigned den)
 519 {
 520     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 521                           num, den);
 522 }
 523 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 524                                  unsigned num, unsigned den)
 525 {
 526     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 527                           num, den);
 528 }
 529 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 530                                   int x, int y, int width, int height)
 531 {
 532     vout_control_cmd_t cmd;
 533     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 534     cmd.u.window.x      = __MAX(x, 0);
 535     cmd.u.window.y      = __MAX(y, 0);
 536     cmd.u.window.width  = __MAX(width, 0);
 537     cmd.u.window.height = __MAX(height, 0);
 538
 539     vout_control_Push(&vout->p->control, &cmd);
 540 }
 541 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 542                                   int left, int top, int right, int bottom)
 543 {
 544     vout_control_cmd_t cmd;
 545     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 546     cmd.u.border.left   = __MAX(left, 0);
 547     cmd.u.border.top    = __MAX(top, 0);
 548     cmd.u.border.right  = __MAX(right, 0);
 549     cmd.u.border.bottom = __MAX(bottom, 0);
 550
 551     vout_control_Push(&vout->p->control, &cmd);
 552 }
 553 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 554 {
 555     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 556                             filters);
 557 }
 558 void vout_ControlChangeSubSources(vout_thread_t *vout, const char *filters)
 559 {
 560     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_SOURCES,
 561                             filters);
 562 }
 563 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 564 {
 565     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 566                             filters);
 567 }
 568 void vout_ControlChangeSubMargin(vout_thread_t *vout, int margin)
 569 {
 570     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_MARGIN,
 571                              margin);
 572 }
 573
 574 /* */
 575 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 576 {
 577     /* Load configuration */
 578     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen")
 579                          || var_InheritBool(vout, "video-wallpaper");
 580     cfg->display.title = title;
 581     const int display_width = var_CreateGetInteger(vout, "width");
 582     const int display_height = var_CreateGetInteger(vout, "height");
 583     cfg->display.width   = display_width > 0  ? display_width  : 0;
 584     cfg->display.height  = display_height > 0 ? display_height : 0;
 585     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 586     unsigned msar_num, msar_den;
 587     if (var_InheritURational(vout, &msar_num, &msar_den, "monitor-par") ||
 588         msar_num <= 0 || msar_den <= 0) {
 589         msar_num = 1;
 590         msar_den = 1;
 591     }
 592     cfg->display.sar.num = msar_num;
 593     cfg->display.sar.den = msar_den;
 594     unsigned zoom_den = 1000;
 595     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 596     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 597     cfg->zoom.num = zoom_num;
 598     cfg->zoom.den = zoom_den;
 599     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 600     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 601     const int align_mask = var_CreateGetInteger(vout, "align");
 602     if (align_mask & 0x1)
 603         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 604     else if (align_mask & 0x2)
 605         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 606     if (align_mask & 0x4)
 607         cfg->align.vertical = VOUT_DISPLAY_ALIGN_TOP;
 608     else if (align_mask & 0x8)
 609         cfg->align.vertical = VOUT_DISPLAY_ALIGN_BOTTOM;
 610 }
 611
 612 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 613                                       const vout_window_cfg_t *cfg)
 614 {
 615     VLC_UNUSED(vd);
 616     vout_window_cfg_t cfg_override = *cfg;
 617
 618     if (!var_InheritBool( vout, "embedded-video"))
 619         cfg_override.is_standalone = true;
 620
 621     if (vout->p->window.is_unused && vout->p->window.object) {
 622         assert(!vout->p->splitter_name);
 623         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 624             cfg_override.type           == vout->p->window.cfg.type) {
 625             /* Reuse the stored window */
 626             msg_Dbg(vout, "Reusing previous vout window");
 627             vout_window_t *window = vout->p->window.object;
 628             if (cfg_override.width  != vout->p->window.cfg.width ||
 629                 cfg_override.height != vout->p->window.cfg.height)
 630                 vout_window_SetSize(window,
 631                                     cfg_override.width, cfg_override.height);
 632             vout->p->window.is_unused = false;
 633             vout->p->window.cfg       = cfg_override;
 634             return window;
 635         }
 636
 637         vout_window_Delete(vout->p->window.object);
 638         vout->p->window.is_unused = true;
 639         vout->p->window.object    = NULL;
 640     }
 641
 642     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), "$window",
 643                                             &cfg_override);
 644     if (!window)
 645         return NULL;
 646     if (!vout->p->splitter_name) {
 647         vout->p->window.is_unused = false;
 648         vout->p->window.cfg       = cfg_override;
 649         vout->p->window.object    = window;
 650     }
 651     return window;
 652 }
 653
 654 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 655                               vout_window_t *window)
 656 {
 657     VLC_UNUSED(vd);
 658     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 659         vout->p->window.is_unused = true;
 660     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 661         vout_window_Delete(vout->p->window.object);
 662         vout->p->window.is_unused = true;
 663         vout->p->window.object    = NULL;
 664     } else if (window) {
 665         vout_window_Delete(window);
 666     }
 667 }
 668
 669 /* */
 670 static picture_t *VoutVideoFilterInteractiveNewPicture(filter_t *filter)
 671 {
 672     vout_thread_t *vout = filter->owner.sys;
 673
 674     picture_t *picture = picture_pool_Get(vout->p->private_pool);
 675     if (picture) {
 676         picture_Reset(picture);
 677         VideoFormatCopyCropAr(&picture->format, &filter->fmt_out.video);
 678     }
 679     return picture;
 680 }
 681
 682 static picture_t *VoutVideoFilterStaticNewPicture(filter_t *filter)
 683 {
 684     vout_thread_t *vout = filter->owner.sys;
 685
 686     vlc_assert_locked(&vout->p->filter.lock);
 687     if (filter_chain_GetLength(vout->p->filter.chain_interactive) == 0)
 688         return VoutVideoFilterInteractiveNewPicture(filter);
 689
 690     return picture_NewFromFormat(&filter->fmt_out.video);
 691 }
 692
 693 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 694 {
 695     VLC_UNUSED(filter);
 696     picture_Release(picture);
 697 }
 698
 699 static void ThreadFilterFlush(vout_thread_t *vout, bool is_locked)
 700 {
 701     if (vout->p->displayed.current)
 702         picture_Release( vout->p->displayed.current );
 703     vout->p->displayed.current = NULL;
 704
 705     if (vout->p->displayed.next)
 706         picture_Release( vout->p->displayed.next );
 707     vout->p->displayed.next = NULL;
 708
 709     if (!is_locked)
 710         vlc_mutex_lock(&vout->p->filter.lock);
 711     filter_chain_VideoFlush(vout->p->filter.chain_static);
 712     filter_chain_VideoFlush(vout->p->filter.chain_interactive);
 713     if (!is_locked)
 714         vlc_mutex_unlock(&vout->p->filter.lock);
 715 }
 716
 717 typedef struct {
 718     char           *name;
 719     config_chain_t *cfg;
 720 } vout_filter_t;
 721
 722 static void ThreadChangeFilters(vout_thread_t *vout,
 723                                 const video_format_t *source,
 724                                 const char *filters,
 725                                 bool is_locked)
 726 {
 727     ThreadFilterFlush(vout, is_locked);
 728
 729     vlc_array_t array_static;
 730     vlc_array_t array_interactive;
 731
 732     vlc_array_init(&array_static);
 733     vlc_array_init(&array_interactive);
 734     char *current = filters ? strdup(filters) : NULL;
 735     while (current) {
 736         config_chain_t *cfg;
 737         char *name;
 738         char *next = config_ChainCreate(&name, &cfg, current);
 739
 740         if (name && *name) {
 741             vout_filter_t *e = xmalloc(sizeof(*e));
 742             e->name = name;
 743             e->cfg  = cfg;
 744             if (!strcmp(e->name, "deinterlace") ||
 745                 !strcmp(e->name, "postproc")) {
 746                 vlc_array_append(&array_static, e);
 747             } else {
 748                 vlc_array_append(&array_interactive, e);
 749             }
 750         } else {
 751             if (cfg)
 752                 config_ChainDestroy(cfg);
 753             free(name);
 754         }
 755         free(current);
 756         current = next;
 757     }
 758
 759     if (!is_locked)
 760         vlc_mutex_lock(&vout->p->filter.lock);
 761
 762     es_format_t fmt_target;
 763     es_format_InitFromVideo(&fmt_target, source ? source : &vout->p->filter.format);
 764
 765     es_format_t fmt_current = fmt_target;
 766
 767     for (int a = 0; a < 2; a++) {
 768         vlc_array_t    *array = a == 0 ? &array_static :
 769                                          &array_interactive;
 770         filter_chain_t *chain = a == 0 ? vout->p->filter.chain_static :
 771                                          vout->p->filter.chain_interactive;
 772
 773         filter_chain_Reset(chain, &fmt_current, &fmt_current);
 774         for (int i = 0; i < vlc_array_count(array); i++) {
 775             vout_filter_t *e = vlc_array_item_at_index(array, i);
 776             msg_Dbg(vout, "Adding '%s' as %s", e->name, a == 0 ? "static" : "interactive");
 777             if (!filter_chain_AppendFilter(chain, e->name, e->cfg, NULL, NULL)) {
 778                 msg_Err(vout, "Failed to add filter '%s'", e->name);
 779                 config_ChainDestroy(e->cfg);
 780             }
 781             free(e->name);
 782             free(e);
 783         }
 784         fmt_current = *filter_chain_GetFmtOut(chain);
 785         vlc_array_clear(array);
 786     }
 787
 788     if (!es_format_IsSimilar(&fmt_current, &fmt_target)) {
 789         msg_Dbg(vout, "Adding a filter to compensate for format changes");
 790         if (!filter_chain_AppendFilter(vout->p->filter.chain_interactive, NULL, NULL,
 791                                        &fmt_current, &fmt_target)) {
 792             msg_Err(vout, "Failed to compensate for the format changes, removing all filters");
 793             filter_chain_Reset(vout->p->filter.chain_static,      &fmt_target, &fmt_target);
 794             filter_chain_Reset(vout->p->filter.chain_interactive, &fmt_target, &fmt_target);
 795         }
 796     }
 797
 798     if (vout->p->filter.configuration != filters) {
 799         free(vout->p->filter.configuration);
 800         vout->p->filter.configuration = filters ? strdup(filters) : NULL;
 801     }
 802     if (source) {
 803         video_format_Clean(&vout->p->filter.format);
 804         video_format_Copy(&vout->p->filter.format, source);
 805     }
 806
 807     if (!is_locked)
 808         vlc_mutex_unlock(&vout->p->filter.lock);
 809 }
 810
 811
 812 /* */
 813 static int ThreadDisplayPreparePicture(vout_thread_t *vout, bool reuse, bool frame_by_frame)
 814 {
 815     bool is_late_dropped = vout->p->is_late_dropped && !vout->p->pause.is_on && !frame_by_frame;
 816
 817     vlc_mutex_lock(&vout->p->filter.lock);
 818
 819     picture_t *picture = filter_chain_VideoFilter(vout->p->filter.chain_static, NULL);
 820     assert(!reuse || !picture);
 821
 822     while (!picture) {
 823         picture_t *decoded;
 824         if (reuse && vout->p->displayed.decoded) {
 825             decoded = picture_Hold(vout->p->displayed.decoded);
 826         } else {
 827             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 828             if (decoded) {
 829                 if (is_late_dropped && !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 %"PRId64" ms)", late/1000);
 834                         picture_Release(decoded);
 835                         vout_statistic_AddLost(&vout->p->statistic, 1);
 836                         continue;
 837                     } else if (late > 0) {
 838                         msg_Dbg(vout, "picture might be displayed late (missing %"PRId64" ms)", late/1000);
 839                     }
 840                 }
 841                 if (!VideoFormatIsCropArEqual(&decoded->format, &vout->p->filter.format))
 842                     ThreadChangeFilters(vout, &decoded->format, vout->p->filter.configuration, true);
 843             }
 844         }
 845
 846         if (!decoded)
 847             break;
 848         reuse = false;
 849
 850         if (vout->p->displayed.decoded)
 851             picture_Release(vout->p->displayed.decoded);
 852
 853         vout->p->displayed.decoded       = picture_Hold(decoded);
 854         vout->p->displayed.timestamp     = decoded->date;
 855         vout->p->displayed.is_interlaced = !decoded->b_progressive;
 856
 857         picture = filter_chain_VideoFilter(vout->p->filter.chain_static, decoded);
 858     }
 859
 860     vlc_mutex_unlock(&vout->p->filter.lock);
 861
 862     if (!picture)
 863         return VLC_EGENERIC;
 864
 865     assert(!vout->p->displayed.next);
 866     if (!vout->p->displayed.current)
 867         vout->p->displayed.current = picture;
 868     else
 869         vout->p->displayed.next    = picture;
 870     return VLC_SUCCESS;
 871 }
 872
 873 static int ThreadDisplayRenderPicture(vout_thread_t *vout, bool is_forced)
 874 {
 875     vout_thread_sys_t *sys = vout->p;
 876     vout_display_t *vd = vout->p->display.vd;
 877
 878     picture_t *torender = picture_Hold(vout->p->displayed.current);
 879
 880     vout_chrono_Start(&vout->p->render);
 881
 882     vlc_mutex_lock(&vout->p->filter.lock);
 883     picture_t *filtered = filter_chain_VideoFilter(vout->p->filter.chain_interactive, torender);
 884     vlc_mutex_unlock(&vout->p->filter.lock);
 885
 886     if (!filtered)
 887         return VLC_EGENERIC;
 888
 889     if (filtered->date != vout->p->displayed.current->date)
 890         msg_Warn(vout, "Unsupported timestamp modifications done by chain_interactive");
 891
 892     /*
 893      * Get the subpicture to be displayed
 894      */
 895     const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 896     mtime_t render_subtitle_date;
 897     if (vout->p->pause.is_on)
 898         render_subtitle_date = vout->p->pause.date;
 899     else
 900         render_subtitle_date = filtered->date > 1 ? filtered->date : mdate();
 901     mtime_t render_osd_date = mdate(); /* FIXME wrong */
 902
 903     /*
 904      * Get the subpicture to be displayed
 905      */
 906     const bool do_dr_spu = !do_snapshot &&
 907                            vd->info.subpicture_chromas &&
 908                            *vd->info.subpicture_chromas != 0;
 909
 910     //FIXME: Denying do_early_spu if vd->source.orientation != ORIENT_NORMAL
 911     //will have the effect that snapshots miss the subpictures. We do this
 912     //because there is currently no way to transform subpictures to match
 913     //the source format.
 914     const bool do_early_spu = !do_dr_spu &&
 915                                vd->source.orientation == ORIENT_NORMAL &&
 916                               (vd->info.is_slow ||
 917                                sys->display.use_dr ||
 918                                do_snapshot ||
 919                                !vout_IsDisplayFiltered(vd) ||
 920                                vd->fmt.i_width * vd->fmt.i_height <= vd->source.i_width * vd->source.i_height);
 921
 922     const vlc_fourcc_t *subpicture_chromas;
 923     video_format_t fmt_spu;
 924     if (do_dr_spu) {
 925         vout_display_place_t place;
 926         vout_display_PlacePicture(&place, &vd->source, vd->cfg, false);
 927
 928         fmt_spu = vd->source;
 929         if (fmt_spu.i_width * fmt_spu.i_height < place.width * place.height) {
 930             fmt_spu.i_sar_num = vd->cfg->display.sar.num;
 931             fmt_spu.i_sar_den = vd->cfg->display.sar.den;
 932             fmt_spu.i_width          =
 933             fmt_spu.i_visible_width  = place.width;
 934             fmt_spu.i_height         =
 935             fmt_spu.i_visible_height = place.height;
 936         }
 937         subpicture_chromas = vd->info.subpicture_chromas;
 938     } else {
 939         if (do_early_spu) {
 940             fmt_spu = vd->source;
 941         } else {
 942             fmt_spu = vd->fmt;
 943             fmt_spu.i_sar_num = vd->cfg->display.sar.num;
 944             fmt_spu.i_sar_den = vd->cfg->display.sar.den;
 945         }
 946         subpicture_chromas = NULL;
 947
 948         if (vout->p->spu_blend &&
 949             vout->p->spu_blend->fmt_out.video.i_chroma != fmt_spu.i_chroma) {
 950             filter_DeleteBlend(vout->p->spu_blend);
 951             vout->p->spu_blend = NULL;
 952             vout->p->spu_blend_chroma = 0;
 953         }
 954         if (!vout->p->spu_blend && vout->p->spu_blend_chroma != fmt_spu.i_chroma) {
 955             vout->p->spu_blend_chroma = fmt_spu.i_chroma;
 956             vout->p->spu_blend = filter_NewBlend(VLC_OBJECT(vout), &fmt_spu);
 957             if (!vout->p->spu_blend)
 958                 msg_Err(vout, "Failed to create blending filter, OSD/Subtitles will not work");
 959         }
 960     }
 961
 962     video_format_t fmt_spu_rot;
 963     video_format_ApplyRotation(&fmt_spu_rot, &fmt_spu);
 964     subpicture_t *subpic = spu_Render(vout->p->spu,
 965                                       subpicture_chromas, &fmt_spu_rot,
 966                                       &vd->source,
 967                                       render_subtitle_date, render_osd_date,
 968                                       do_snapshot);
 969     /*
 970      * Perform rendering
 971      *
 972      * We have to:
 973      * - be sure to end up with a direct buffer.
 974      * - blend subtitles, and in a fast access buffer
 975      */
 976     bool is_direct = vout->p->decoder_pool == vout->p->display_pool;
 977     picture_t *todisplay = filtered;
 978     if (do_early_spu && subpic) {
 979         picture_t *blent = picture_pool_Get(vout->p->private_pool);
 980         if (blent) {
 981             VideoFormatCopyCropAr(&blent->format, &filtered->format);
 982             picture_Copy(blent, filtered);
 983             if (vout->p->spu_blend
 984              && picture_BlendSubpicture(blent, vout->p->spu_blend, subpic)) {
 985                 picture_Release(todisplay);
 986                 todisplay = blent;
 987             } else
 988                 picture_Release(blent);
 989         }
 990         subpicture_Delete(subpic);
 991         subpic = NULL;
 992     }
 993
 994     assert(vout_IsDisplayFiltered(vd) == !sys->display.use_dr);
 995     if (sys->display.use_dr && !is_direct) {
 996         picture_t *direct = picture_pool_Get(vout->p->display_pool);
 997         if (!direct) {
 998             picture_Release(todisplay);
 999             if (subpic)
1000                 subpicture_Delete(subpic);
1001             return VLC_EGENERIC;
1002         }
1003
1004         /* The display uses direct rendering (no conversion), but its pool of
1005          * pictures is not usable by the decoder (too few, too slow or
1006          * subject to invalidation...). Since there are no filters, copying
1007          * pictures from the decoder to the output is unavoidable. */
1008         VideoFormatCopyCropAr(&direct->format, &todisplay->format);
1009         picture_Copy(direct, todisplay);
1010         picture_Release(todisplay);
1011         todisplay = direct;
1012     }
1013
1014     /*
1015      * Take a snapshot if requested
1016      */
1017     if (do_snapshot)
1018         vout_snapshot_Set(&vout->p->snapshot, &vd->source, todisplay);
1019
1020     /* Render the direct buffer */
1021     vout_UpdateDisplaySourceProperties(vd, &todisplay->format);
1022     if (sys->display.use_dr) {
1023         vout_display_Prepare(vd, todisplay, subpic);
1024     } else {
1025         sys->display.filtered = vout_FilterDisplay(vd, todisplay);
1026         if (sys->display.filtered) {
1027             if (!do_dr_spu && !do_early_spu && vout->p->spu_blend && subpic)
1028                 picture_BlendSubpicture(sys->display.filtered, vout->p->spu_blend, subpic);
1029             vout_display_Prepare(vd, sys->display.filtered, do_dr_spu ? subpic : NULL);
1030         }
1031         if (!do_dr_spu && subpic)
1032         {
1033             subpicture_Delete(subpic);
1034             subpic = NULL;
1035         }
1036         if (!sys->display.filtered)
1037             return VLC_EGENERIC;
1038     }
1039
1040     vout_chrono_Stop(&vout->p->render);
1041 #if 0
1042         {
1043         static int i = 0;
1044         if (((i++)%10) == 0)
1045             msg_Info(vout, "render: avg %d ms var %d ms",
1046                      (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
1047         }
1048 #endif
1049
1050     /* Wait the real date (for rendering jitter) */
1051 #if 0
1052     mtime_t delay = direct->date - mdate();
1053     if (delay < 1000)
1054         msg_Warn(vout, "picture is late (%lld ms)", delay / 1000);
1055 #endif
1056     if (!is_forced)
1057         mwait(todisplay->date);
1058
1059     /* Display the direct buffer returned by vout_RenderPicture */
1060     vout->p->displayed.date = mdate();
1061     vout_display_Display(vd,
1062                          sys->display.filtered ? sys->display.filtered
1063                                                 : todisplay,
1064                          subpic);
1065     sys->display.filtered = NULL;
1066
1067     vout_statistic_AddDisplayed(&vout->p->statistic, 1);
1068
1069     return VLC_SUCCESS;
1070 }
1071
1072 static int ThreadDisplayPicture(vout_thread_t *vout, mtime_t *deadline)
1073 {
1074     bool frame_by_frame = !deadline;
1075     bool paused = vout->p->pause.is_on;
1076     bool first = !vout->p->displayed.current;
1077
1078     if (first)
1079         if (ThreadDisplayPreparePicture(vout, true, frame_by_frame)) /* FIXME not sure it is ok */
1080             return VLC_EGENERIC;
1081
1082     if (!paused || frame_by_frame)
1083         while (!vout->p->displayed.next && !ThreadDisplayPreparePicture(vout, false, frame_by_frame))
1084             ;
1085
1086     const mtime_t date = mdate();
1087     const mtime_t render_delay = vout_chrono_GetHigh(&vout->p->render) + VOUT_MWAIT_TOLERANCE;
1088
1089     bool drop_next_frame = frame_by_frame;
1090     mtime_t date_next = VLC_TS_INVALID;
1091     if (!paused && vout->p->displayed.next) {
1092         date_next = vout->p->displayed.next->date - render_delay;
1093         if (date_next /* + 0 FIXME */ <= date)
1094             drop_next_frame = true;
1095     }
1096
1097     /* FIXME/XXX we must redisplay the last decoded picture (because
1098      * of potential vout updated, or filters update or SPU update)
1099      * For now a high update period is needed but it could be removed
1100      * if and only if:
1101      * - vout module emits events from theselves.
1102      * - *and* SPU is modified to emit an event or a deadline when needed.
1103      *
1104      * So it will be done later.
1105      */
1106     bool refresh = false;
1107
1108     mtime_t date_refresh = VLC_TS_INVALID;
1109     if (vout->p->displayed.date > VLC_TS_INVALID) {
1110         date_refresh = vout->p->displayed.date + VOUT_REDISPLAY_DELAY - render_delay;
1111         refresh = date_refresh <= date;
1112     }
1113
1114     if (!first && !refresh && !drop_next_frame) {
1115         if (!frame_by_frame) {
1116             if (date_refresh != VLC_TS_INVALID)
1117                 *deadline = date_refresh;
1118             if (date_next != VLC_TS_INVALID && date_next < *deadline)
1119                 *deadline = date_next;
1120         }
1121         return VLC_EGENERIC;
1122     }
1123
1124     if (drop_next_frame) {
1125         picture_Release(vout->p->displayed.current);
1126         vout->p->displayed.current = vout->p->displayed.next;
1127         vout->p->displayed.next    = NULL;
1128     }
1129
1130     if (!vout->p->displayed.current)
1131         return VLC_EGENERIC;
1132
1133     /* display the picture immediately */
1134     bool is_forced = frame_by_frame || (!drop_next_frame && refresh) || vout->p->displayed.current->b_force;
1135     return ThreadDisplayRenderPicture(vout, is_forced);
1136 }
1137
1138 static void ThreadDisplaySubpicture(vout_thread_t *vout,
1139                                     subpicture_t *subpicture)
1140 {
1141     spu_PutSubpicture(vout->p->spu, subpicture);
1142 }
1143
1144 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
1145 {
1146     spu_ClearChannel(vout->p->spu, channel);
1147 }
1148
1149 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
1150 {
1151     if (!vout->p->title.show)
1152         return;
1153
1154     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
1155                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
1156                  string);
1157 }
1158
1159 static void ThreadChangeSubSources(vout_thread_t *vout, const char *filters)
1160 {
1161     spu_ChangeSources(vout->p->spu, filters);
1162 }
1163
1164 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
1165 {
1166     spu_ChangeFilters(vout->p->spu, filters);
1167 }
1168
1169 static void ThreadChangeSubMargin(vout_thread_t *vout, int margin)
1170 {
1171     spu_ChangeMargin(vout->p->spu, margin);
1172 }
1173
1174 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
1175 {
1176     assert(!vout->p->pause.is_on || !is_paused);
1177
1178     if (vout->p->pause.is_on) {
1179         const mtime_t duration = date - vout->p->pause.date;
1180
1181         if (vout->p->step.timestamp > VLC_TS_INVALID)
1182             vout->p->step.timestamp += duration;
1183         if (vout->p->step.last > VLC_TS_INVALID)
1184             vout->p->step.last += duration;
1185         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
1186         if (vout->p->displayed.decoded)
1187             vout->p->displayed.decoded->date += duration;
1188         spu_OffsetSubtitleDate(vout->p->spu, duration);
1189
1190         ThreadFilterFlush(vout, false);
1191     } else {
1192         vout->p->step.timestamp = VLC_TS_INVALID;
1193         vout->p->step.last      = VLC_TS_INVALID;
1194     }
1195     vout->p->pause.is_on = is_paused;
1196     vout->p->pause.date  = date;
1197 }
1198
1199 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
1200 {
1201     vout->p->step.timestamp = VLC_TS_INVALID;
1202     vout->p->step.last      = VLC_TS_INVALID;
1203
1204     ThreadFilterFlush(vout, false); /* FIXME too much */
1205
1206     picture_t *last = vout->p->displayed.decoded;
1207     if (last) {
1208         if (( below && last->date <= date) ||
1209             (!below && last->date >= date)) {
1210             picture_Release(last);
1211
1212             vout->p->displayed.decoded   = NULL;
1213             vout->p->displayed.date      = VLC_TS_INVALID;
1214             vout->p->displayed.timestamp = VLC_TS_INVALID;
1215         }
1216     }
1217
1218     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
1219 }
1220
1221 static void ThreadReset(vout_thread_t *vout)
1222 {
1223     ThreadFlush(vout, true, INT64_MAX);
1224     if (vout->p->decoder_pool)
1225         picture_pool_NonEmpty(vout->p->decoder_pool, true);
1226     vout->p->pause.is_on = false;
1227     vout->p->pause.date  = mdate();
1228 }
1229
1230 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
1231 {
1232     *duration = 0;
1233
1234     if (vout->p->step.last <= VLC_TS_INVALID)
1235         vout->p->step.last = vout->p->displayed.timestamp;
1236
1237     if (ThreadDisplayPicture(vout, NULL))
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     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
1253 }
1254
1255 static void ThreadChangeWindowState(vout_thread_t *vout, unsigned state)
1256 {
1257     vout_SetWindowState(vout->p->display.vd, state);
1258 }
1259
1260 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
1261 {
1262     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
1263 }
1264
1265 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
1266 {
1267     if (num * 10 < den) {
1268         num = den;
1269         den *= 10;
1270     } else if (num > den * 10) {
1271         num = den * 10;
1272     }
1273
1274     vout_SetDisplayZoom(vout->p->display.vd, num, den);
1275 }
1276
1277 static void ThreadChangeAspectRatio(vout_thread_t *vout,
1278                                     unsigned num, unsigned den)
1279 {
1280     vout_SetDisplayAspect(vout->p->display.vd, num, den);
1281 }
1282
1283
1284 static void ThreadExecuteCropWindow(vout_thread_t *vout,
1285                                     unsigned x, unsigned y,
1286                                     unsigned width, unsigned height)
1287 {
1288     vout_SetDisplayCrop(vout->p->display.vd, 0, 0,
1289                         x, y, width, height);
1290 }
1291 static void ThreadExecuteCropBorder(vout_thread_t *vout,
1292                                     unsigned left, unsigned top,
1293                                     unsigned right, unsigned bottom)
1294 {
1295     msg_Err(vout, "ThreadExecuteCropBorder %d.%d %dx%d", left, top, right, bottom);
1296     vout_SetDisplayCrop(vout->p->display.vd, 0, 0,
1297                         left, top, -(int)right, -(int)bottom);
1298 }
1299
1300 static void ThreadExecuteCropRatio(vout_thread_t *vout,
1301                                    unsigned num, unsigned den)
1302 {
1303     vout_SetDisplayCrop(vout->p->display.vd, num, den,
1304                         0, 0, 0, 0);
1305 }
1306
1307 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
1308 {
1309     vlc_mouse_Init(&vout->p->mouse);
1310     vout->p->decoder_fifo = picture_fifo_New();
1311     vout->p->decoder_pool = NULL;
1312     vout->p->display_pool = NULL;
1313     vout->p->private_pool = NULL;
1314
1315     vout->p->filter.configuration = NULL;
1316     video_format_Copy(&vout->p->filter.format, &vout->p->original);
1317
1318     filter_owner_t owner = {
1319         .sys = vout,
1320         .video = {
1321             .buffer_new = VoutVideoFilterStaticNewPicture,
1322             .buffer_del = VoutVideoFilterDelPicture,
1323         },
1324     };
1325     vout->p->filter.chain_static =
1326         filter_chain_NewVideo( vout, true, &owner );
1327
1328     owner.video.buffer_new = VoutVideoFilterInteractiveNewPicture;
1329     vout->p->filter.chain_interactive =
1330         filter_chain_NewVideo( vout, true, &owner );
1331
1332     vout_display_state_t state_default;
1333     if (!state) {
1334         var_Create(vout, "video-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
1335         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
1336
1337         bool below = var_InheritBool(vout, "video-wallpaper");
1338         bool above = var_CreateGetBool(vout, "video-on-top");
1339
1340         state_default.wm_state = below ? VOUT_WINDOW_STATE_BELOW
1341                                : above ? VOUT_WINDOW_STATE_ABOVE
1342                                : VOUT_WINDOW_STATE_NORMAL;
1343         state_default.sar.num = 0;
1344         state_default.sar.den = 0;
1345
1346         state = &state_default;
1347     }
1348
1349     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
1350         return VLC_EGENERIC;
1351     if (vout_InitWrapper(vout))
1352         return VLC_EGENERIC;
1353     assert(vout->p->decoder_pool);
1354
1355     vout->p->displayed.current       = NULL;
1356     vout->p->displayed.next          = NULL;
1357     vout->p->displayed.decoded       = NULL;
1358     vout->p->displayed.date          = VLC_TS_INVALID;
1359     vout->p->displayed.timestamp     = VLC_TS_INVALID;
1360     vout->p->displayed.is_interlaced = false;
1361
1362     vout->p->step.last               = VLC_TS_INVALID;
1363     vout->p->step.timestamp          = VLC_TS_INVALID;
1364
1365     vout->p->spu_blend_chroma        = 0;
1366     vout->p->spu_blend               = NULL;
1367
1368     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
1369     return VLC_SUCCESS;
1370 }
1371
1372 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1373 {
1374     if (vout->p->spu_blend)
1375         filter_DeleteBlend(vout->p->spu_blend);
1376
1377     /* Destroy translation tables */
1378     if (vout->p->display.vd) {
1379         if (vout->p->decoder_pool) {
1380             ThreadFlush(vout, true, INT64_MAX);
1381             vout_EndWrapper(vout);
1382         }
1383         vout_CloseWrapper(vout, state);
1384     }
1385
1386     /* Destroy the video filters2 */
1387     filter_chain_Delete(vout->p->filter.chain_interactive);
1388     filter_chain_Delete(vout->p->filter.chain_static);
1389     video_format_Clean(&vout->p->filter.format);
1390     free(vout->p->filter.configuration);
1391
1392     if (vout->p->decoder_fifo)
1393         picture_fifo_Delete(vout->p->decoder_fifo);
1394     assert(!vout->p->decoder_pool);
1395 }
1396
1397 static void ThreadInit(vout_thread_t *vout)
1398 {
1399     vout->p->window.is_unused = true;
1400     vout->p->window.object    = NULL;
1401     vout->p->dead             = false;
1402     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1403     vout->p->pause.is_on      = false;
1404     vout->p->pause.date       = VLC_TS_INVALID;
1405
1406     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1407 }
1408
1409 static void ThreadClean(vout_thread_t *vout)
1410 {
1411     if (vout->p->window.object) {
1412         assert(vout->p->window.is_unused);
1413         vout_window_Delete(vout->p->window.object);
1414     }
1415     vout_chrono_Clean(&vout->p->render);
1416     vout->p->dead = true;
1417     vout_control_Dead(&vout->p->control);
1418 }
1419
1420 static int ThreadReinit(vout_thread_t *vout,
1421                         const vout_configuration_t *cfg)
1422 {
1423     video_format_t original;
1424     if (VoutValidateFormat(&original, cfg->fmt)) {
1425         ThreadStop(vout, NULL);
1426         ThreadClean(vout);
1427         return VLC_EGENERIC;
1428     }
1429     /* We ignore crop/ar changes at this point, they are dynamically supported */
1430     VideoFormatCopyCropAr(&vout->p->original, &original);
1431     if (video_format_IsSimilar(&original, &vout->p->original)) {
1432         if (cfg->dpb_size <= vout->p->dpb_size)
1433             return VLC_SUCCESS;
1434         msg_Warn(vout, "DPB need to be increased");
1435     }
1436
1437     vout_display_state_t state;
1438     memset(&state, 0, sizeof(state));
1439
1440     ThreadStop(vout, &state);
1441
1442     if (!state.cfg.is_fullscreen) {
1443         state.cfg.display.width  = 0;
1444         state.cfg.display.height = 0;
1445     }
1446     state.sar.num = 0;
1447     state.sar.den = 0;
1448     /* FIXME current vout "variables" are not in sync here anymore
1449      * and I am not sure what to do */
1450
1451     vout->p->original = original;
1452     vout->p->dpb_size = cfg->dpb_size;
1453     if (ThreadStart(vout, &state)) {
1454         ThreadClean(vout);
1455         return VLC_EGENERIC;
1456     }
1457     return VLC_SUCCESS;
1458 }
1459
1460 static int ThreadControl(vout_thread_t *vout, vout_control_cmd_t cmd)
1461 {
1462     switch(cmd.type) {
1463     case VOUT_CONTROL_INIT:
1464         ThreadInit(vout);
1465         if (!ThreadStart(vout, NULL))
1466             break;
1467     case VOUT_CONTROL_CLEAN:
1468         ThreadStop(vout, NULL);
1469         ThreadClean(vout);
1470         return 1;
1471     case VOUT_CONTROL_REINIT:
1472         if (ThreadReinit(vout, cmd.u.cfg))
1473             return 1;
1474         break;
1475     case VOUT_CONTROL_SUBPICTURE:
1476         ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1477         cmd.u.subpicture = NULL;
1478         break;
1479     case VOUT_CONTROL_FLUSH_SUBPICTURE:
1480         ThreadFlushSubpicture(vout, cmd.u.integer);
1481         break;
1482     case VOUT_CONTROL_OSD_TITLE:
1483         ThreadDisplayOsdTitle(vout, cmd.u.string);
1484         break;
1485     case VOUT_CONTROL_CHANGE_FILTERS:
1486         ThreadChangeFilters(vout, NULL, cmd.u.string, false);
1487         break;
1488     case VOUT_CONTROL_CHANGE_SUB_SOURCES:
1489         ThreadChangeSubSources(vout, cmd.u.string);
1490         break;
1491     case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1492         ThreadChangeSubFilters(vout, cmd.u.string);
1493         break;
1494     case VOUT_CONTROL_CHANGE_SUB_MARGIN:
1495         ThreadChangeSubMargin(vout, cmd.u.integer);
1496         break;
1497     case VOUT_CONTROL_PAUSE:
1498         ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1499         break;
1500     case VOUT_CONTROL_FLUSH:
1501         ThreadFlush(vout, false, cmd.u.time);
1502         break;
1503     case VOUT_CONTROL_RESET:
1504         ThreadReset(vout);
1505         break;
1506     case VOUT_CONTROL_STEP:
1507         ThreadStep(vout, cmd.u.time_ptr);
1508         break;
1509     case VOUT_CONTROL_FULLSCREEN:
1510         ThreadChangeFullscreen(vout, cmd.u.boolean);
1511         break;
1512     case VOUT_CONTROL_WINDOW_STATE:
1513         ThreadChangeWindowState(vout, cmd.u.integer);
1514         break;
1515     case VOUT_CONTROL_DISPLAY_FILLED:
1516         ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1517         break;
1518     case VOUT_CONTROL_ZOOM:
1519         ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1520         break;
1521     case VOUT_CONTROL_ASPECT_RATIO:
1522         ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1523         break;
1524     case VOUT_CONTROL_CROP_RATIO:
1525         ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1526         break;
1527     case VOUT_CONTROL_CROP_WINDOW:
1528         ThreadExecuteCropWindow(vout,
1529                 cmd.u.window.x, cmd.u.window.y,
1530                 cmd.u.window.width, cmd.u.window.height);
1531         break;
1532     case VOUT_CONTROL_CROP_BORDER:
1533         ThreadExecuteCropBorder(vout,
1534                 cmd.u.border.left,  cmd.u.border.top,
1535                 cmd.u.border.right, cmd.u.border.bottom);
1536         break;
1537     default:
1538         break;
1539     }
1540     vout_control_cmd_Clean(&cmd);
1541     return 0;
1542 }
1543
1544 /*****************************************************************************
1545  * Thread: video output thread
1546  *****************************************************************************
1547  * Video output thread. This function does only returns when the thread is
1548  * terminated. It handles the pictures arriving in the video heap and the
1549  * display device events.
1550  *****************************************************************************/
1551 static void *Thread(void *object)
1552 {
1553     vout_thread_t *vout = object;
1554     vout_thread_sys_t *sys = vout->p;
1555
1556     vout_interlacing_support_t interlacing = {
1557         .is_interlaced = false,
1558         .date = mdate(),
1559     };
1560
1561     mtime_t deadline = VLC_TS_INVALID;
1562     for (;;) {
1563         vout_control_cmd_t cmd;
1564         /* FIXME remove thoses ugly timeouts */
1565         while (!vout_control_Pop(&sys->control, &cmd, deadline, 100000))
1566             if (ThreadControl(vout, cmd))
1567                 return NULL;
1568
1569         vlc_mutex_lock(&sys->picture_lock);
1570
1571         deadline = VLC_TS_INVALID;
1572         while (!ThreadDisplayPicture(vout, &deadline))
1573             ;
1574
1575         const bool picture_interlaced = sys->displayed.is_interlaced;
1576
1577         vlc_mutex_unlock(&sys->picture_lock);
1578
1579         vout_SetInterlacingState(vout, &interlacing, picture_interlaced);
1580         vout_ManageWrapper(vout);
1581     }
1582 }