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 int VoutVideoFilterStaticAllocationSetup(filter_t *filter, void *data)
 700 {
 701     filter->owner.sys              = data; /* vout */
 702     filter->owner.video.buffer_new = VoutVideoFilterStaticNewPicture;
 703     filter->owner.video.buffer_del = VoutVideoFilterDelPicture;
 704     return VLC_SUCCESS;
 705 }
 706
 707 static int VoutVideoFilterInteractiveAllocationSetup(filter_t *filter, void *data)
 708 {
 709     filter->owner.sys              = data; /* vout */
 710     filter->owner.video.buffer_new = VoutVideoFilterInteractiveNewPicture;
 711     filter->owner.video.buffer_del = VoutVideoFilterDelPicture;
 712     return VLC_SUCCESS;
 713 }
 714
 715 static void ThreadFilterFlush(vout_thread_t *vout, bool is_locked)
 716 {
 717     if (vout->p->displayed.current)
 718         picture_Release( vout->p->displayed.current );
 719     vout->p->displayed.current = NULL;
 720
 721     if (vout->p->displayed.next)
 722         picture_Release( vout->p->displayed.next );
 723     vout->p->displayed.next = NULL;
 724
 725     if (!is_locked)
 726         vlc_mutex_lock(&vout->p->filter.lock);
 727     filter_chain_VideoFlush(vout->p->filter.chain_static);
 728     filter_chain_VideoFlush(vout->p->filter.chain_interactive);
 729     if (!is_locked)
 730         vlc_mutex_unlock(&vout->p->filter.lock);
 731 }
 732
 733 typedef struct {
 734     char           *name;
 735     config_chain_t *cfg;
 736 } vout_filter_t;
 737
 738 static void ThreadChangeFilters(vout_thread_t *vout,
 739                                 const video_format_t *source,
 740                                 const char *filters,
 741                                 bool is_locked)
 742 {
 743     ThreadFilterFlush(vout, is_locked);
 744
 745     vlc_array_t array_static;
 746     vlc_array_t array_interactive;
 747
 748     vlc_array_init(&array_static);
 749     vlc_array_init(&array_interactive);
 750     char *current = filters ? strdup(filters) : NULL;
 751     while (current) {
 752         config_chain_t *cfg;
 753         char *name;
 754         char *next = config_ChainCreate(&name, &cfg, current);
 755
 756         if (name && *name) {
 757             vout_filter_t *e = xmalloc(sizeof(*e));
 758             e->name = name;
 759             e->cfg  = cfg;
 760             if (!strcmp(e->name, "deinterlace") ||
 761                 !strcmp(e->name, "postproc")) {
 762                 vlc_array_append(&array_static, e);
 763             } else {
 764                 vlc_array_append(&array_interactive, e);
 765             }
 766         } else {
 767             if (cfg)
 768                 config_ChainDestroy(cfg);
 769             free(name);
 770         }
 771         free(current);
 772         current = next;
 773     }
 774
 775     if (!is_locked)
 776         vlc_mutex_lock(&vout->p->filter.lock);
 777
 778     es_format_t fmt_target;
 779     es_format_InitFromVideo(&fmt_target, source ? source : &vout->p->filter.format);
 780
 781     es_format_t fmt_current = fmt_target;
 782
 783     for (int a = 0; a < 2; a++) {
 784         vlc_array_t    *array = a == 0 ? &array_static :
 785                                          &array_interactive;
 786         filter_chain_t *chain = a == 0 ? vout->p->filter.chain_static :
 787                                          vout->p->filter.chain_interactive;
 788
 789         filter_chain_Reset(chain, &fmt_current, &fmt_current);
 790         for (int i = 0; i < vlc_array_count(array); i++) {
 791             vout_filter_t *e = vlc_array_item_at_index(array, i);
 792             msg_Dbg(vout, "Adding '%s' as %s", e->name, a == 0 ? "static" : "interactive");
 793             if (!filter_chain_AppendFilter(chain, e->name, e->cfg, NULL, NULL)) {
 794                 msg_Err(vout, "Failed to add filter '%s'", e->name);
 795                 config_ChainDestroy(e->cfg);
 796             }
 797             free(e->name);
 798             free(e);
 799         }
 800         fmt_current = *filter_chain_GetFmtOut(chain);
 801         vlc_array_clear(array);
 802     }
 803
 804     if (!es_format_IsSimilar(&fmt_current, &fmt_target)) {
 805         msg_Dbg(vout, "Adding a filter to compensate for format changes");
 806         if (!filter_chain_AppendFilter(vout->p->filter.chain_interactive, NULL, NULL,
 807                                        &fmt_current, &fmt_target)) {
 808             msg_Err(vout, "Failed to compensate for the format changes, removing all filters");
 809             filter_chain_Reset(vout->p->filter.chain_static,      &fmt_target, &fmt_target);
 810             filter_chain_Reset(vout->p->filter.chain_interactive, &fmt_target, &fmt_target);
 811         }
 812     }
 813
 814     if (vout->p->filter.configuration != filters) {
 815         free(vout->p->filter.configuration);
 816         vout->p->filter.configuration = filters ? strdup(filters) : NULL;
 817     }
 818     if (source) {
 819         video_format_Clean(&vout->p->filter.format);
 820         video_format_Copy(&vout->p->filter.format, source);
 821     }
 822
 823     if (!is_locked)
 824         vlc_mutex_unlock(&vout->p->filter.lock);
 825 }
 826
 827
 828 /* */
 829 static int ThreadDisplayPreparePicture(vout_thread_t *vout, bool reuse, bool frame_by_frame)
 830 {
 831     bool is_late_dropped = vout->p->is_late_dropped && !vout->p->pause.is_on && !frame_by_frame;
 832
 833     vlc_mutex_lock(&vout->p->filter.lock);
 834
 835     picture_t *picture = filter_chain_VideoFilter(vout->p->filter.chain_static, NULL);
 836     assert(!reuse || !picture);
 837
 838     while (!picture) {
 839         picture_t *decoded;
 840         if (reuse && vout->p->displayed.decoded) {
 841             decoded = picture_Hold(vout->p->displayed.decoded);
 842         } else {
 843             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 844             if (decoded) {
 845                 if (is_late_dropped && !decoded->b_force) {
 846                     const mtime_t predicted = mdate() + 0; /* TODO improve */
 847                     const mtime_t late = predicted - decoded->date;
 848                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 849                         msg_Warn(vout, "picture is too late to be displayed (missing %"PRId64" ms)", late/1000);
 850                         picture_Release(decoded);
 851                         vout_statistic_AddLost(&vout->p->statistic, 1);
 852                         continue;
 853                     } else if (late > 0) {
 854                         msg_Dbg(vout, "picture might be displayed late (missing %"PRId64" ms)", late/1000);
 855                     }
 856                 }
 857                 if (!VideoFormatIsCropArEqual(&decoded->format, &vout->p->filter.format))
 858                     ThreadChangeFilters(vout, &decoded->format, vout->p->filter.configuration, true);
 859             }
 860         }
 861
 862         if (!decoded)
 863             break;
 864         reuse = false;
 865
 866         if (vout->p->displayed.decoded)
 867             picture_Release(vout->p->displayed.decoded);
 868
 869         vout->p->displayed.decoded       = picture_Hold(decoded);
 870         vout->p->displayed.timestamp     = decoded->date;
 871         vout->p->displayed.is_interlaced = !decoded->b_progressive;
 872
 873         picture = filter_chain_VideoFilter(vout->p->filter.chain_static, decoded);
 874     }
 875
 876     vlc_mutex_unlock(&vout->p->filter.lock);
 877
 878     if (!picture)
 879         return VLC_EGENERIC;
 880
 881     assert(!vout->p->displayed.next);
 882     if (!vout->p->displayed.current)
 883         vout->p->displayed.current = picture;
 884     else
 885         vout->p->displayed.next    = picture;
 886     return VLC_SUCCESS;
 887 }
 888
 889 static int ThreadDisplayRenderPicture(vout_thread_t *vout, bool is_forced)
 890 {
 891     vout_thread_sys_t *sys = vout->p;
 892     vout_display_t *vd = vout->p->display.vd;
 893
 894     picture_t *torender = picture_Hold(vout->p->displayed.current);
 895
 896     vout_chrono_Start(&vout->p->render);
 897
 898     vlc_mutex_lock(&vout->p->filter.lock);
 899     picture_t *filtered = filter_chain_VideoFilter(vout->p->filter.chain_interactive, torender);
 900     vlc_mutex_unlock(&vout->p->filter.lock);
 901
 902     if (!filtered)
 903         return VLC_EGENERIC;
 904
 905     if (filtered->date != vout->p->displayed.current->date)
 906         msg_Warn(vout, "Unsupported timestamp modifications done by chain_interactive");
 907
 908     /*
 909      * Get the subpicture to be displayed
 910      */
 911     const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 912     mtime_t render_subtitle_date;
 913     if (vout->p->pause.is_on)
 914         render_subtitle_date = vout->p->pause.date;
 915     else
 916         render_subtitle_date = filtered->date > 1 ? filtered->date : mdate();
 917     mtime_t render_osd_date = mdate(); /* FIXME wrong */
 918
 919     /*
 920      * Get the subpicture to be displayed
 921      */
 922     const bool do_dr_spu = !do_snapshot &&
 923                            vd->info.subpicture_chromas &&
 924                            *vd->info.subpicture_chromas != 0;
 925
 926     //FIXME: Denying do_early_spu if vd->source.orientation != ORIENT_NORMAL
 927     //will have the effect that snapshots miss the subpictures. We do this
 928     //because there is currently no way to transform subpictures to match
 929     //the source format.
 930     const bool do_early_spu = !do_dr_spu &&
 931                                vd->source.orientation == ORIENT_NORMAL &&
 932                               (vd->info.is_slow ||
 933                                sys->display.use_dr ||
 934                                do_snapshot ||
 935                                !vout_IsDisplayFiltered(vd) ||
 936                                vd->fmt.i_width * vd->fmt.i_height <= vd->source.i_width * vd->source.i_height);
 937
 938     const vlc_fourcc_t *subpicture_chromas;
 939     video_format_t fmt_spu;
 940     if (do_dr_spu) {
 941         vout_display_place_t place;
 942         vout_display_PlacePicture(&place, &vd->source, vd->cfg, false);
 943
 944         fmt_spu = vd->source;
 945         if (fmt_spu.i_width * fmt_spu.i_height < place.width * place.height) {
 946             fmt_spu.i_sar_num = vd->cfg->display.sar.num;
 947             fmt_spu.i_sar_den = vd->cfg->display.sar.den;
 948             fmt_spu.i_width          =
 949             fmt_spu.i_visible_width  = place.width;
 950             fmt_spu.i_height         =
 951             fmt_spu.i_visible_height = place.height;
 952         }
 953         subpicture_chromas = vd->info.subpicture_chromas;
 954     } else {
 955         if (do_early_spu) {
 956             fmt_spu = vd->source;
 957         } else {
 958             fmt_spu = vd->fmt;
 959             fmt_spu.i_sar_num = vd->cfg->display.sar.num;
 960             fmt_spu.i_sar_den = vd->cfg->display.sar.den;
 961         }
 962         subpicture_chromas = NULL;
 963
 964         if (vout->p->spu_blend &&
 965             vout->p->spu_blend->fmt_out.video.i_chroma != fmt_spu.i_chroma) {
 966             filter_DeleteBlend(vout->p->spu_blend);
 967             vout->p->spu_blend = NULL;
 968             vout->p->spu_blend_chroma = 0;
 969         }
 970         if (!vout->p->spu_blend && vout->p->spu_blend_chroma != fmt_spu.i_chroma) {
 971             vout->p->spu_blend_chroma = fmt_spu.i_chroma;
 972             vout->p->spu_blend = filter_NewBlend(VLC_OBJECT(vout), &fmt_spu);
 973             if (!vout->p->spu_blend)
 974                 msg_Err(vout, "Failed to create blending filter, OSD/Subtitles will not work");
 975         }
 976     }
 977
 978     video_format_t fmt_spu_rot;
 979     video_format_ApplyRotation(&fmt_spu_rot, &fmt_spu);
 980     subpicture_t *subpic = spu_Render(vout->p->spu,
 981                                       subpicture_chromas, &fmt_spu_rot,
 982                                       &vd->source,
 983                                       render_subtitle_date, render_osd_date,
 984                                       do_snapshot);
 985     /*
 986      * Perform rendering
 987      *
 988      * We have to:
 989      * - be sure to end up with a direct buffer.
 990      * - blend subtitles, and in a fast access buffer
 991      */
 992     bool is_direct = vout->p->decoder_pool == vout->p->display_pool;
 993     picture_t *todisplay = filtered;
 994     if (do_early_spu && subpic) {
 995         picture_t *blent = picture_pool_Get(vout->p->private_pool);
 996         if (blent) {
 997             VideoFormatCopyCropAr(&blent->format, &filtered->format);
 998             picture_Copy(blent, filtered);
 999             if (vout->p->spu_blend
1000              && picture_BlendSubpicture(blent, vout->p->spu_blend, subpic)) {
1001                 picture_Release(todisplay);
1002                 todisplay = blent;
1003             } else
1004                 picture_Release(blent);
1005         }
1006         subpicture_Delete(subpic);
1007         subpic = NULL;
1008     }
1009
1010     assert(vout_IsDisplayFiltered(vd) == !sys->display.use_dr);
1011     if (sys->display.use_dr && !is_direct) {
1012         picture_t *direct = picture_pool_Get(vout->p->display_pool);
1013         if (!direct) {
1014             picture_Release(todisplay);
1015             if (subpic)
1016                 subpicture_Delete(subpic);
1017             return VLC_EGENERIC;
1018         }
1019
1020         /* The display uses direct rendering (no conversion), but its pool of
1021          * pictures is not usable by the decoder (too few, too slow or
1022          * subject to invalidation...). Since there are no filters, copying
1023          * pictures from the decoder to the output is unavoidable. */
1024         VideoFormatCopyCropAr(&direct->format, &todisplay->format);
1025         picture_Copy(direct, todisplay);
1026         picture_Release(todisplay);
1027         todisplay = direct;
1028     }
1029
1030     /*
1031      * Take a snapshot if requested
1032      */
1033     if (do_snapshot)
1034         vout_snapshot_Set(&vout->p->snapshot, &vd->source, todisplay);
1035
1036     /* Render the direct buffer */
1037     vout_UpdateDisplaySourceProperties(vd, &todisplay->format);
1038     if (sys->display.use_dr) {
1039         vout_display_Prepare(vd, todisplay, subpic);
1040     } else {
1041         sys->display.filtered = vout_FilterDisplay(vd, todisplay);
1042         if (sys->display.filtered) {
1043             if (!do_dr_spu && !do_early_spu && vout->p->spu_blend && subpic)
1044                 picture_BlendSubpicture(sys->display.filtered, vout->p->spu_blend, subpic);
1045             vout_display_Prepare(vd, sys->display.filtered, do_dr_spu ? subpic : NULL);
1046         }
1047         if (!do_dr_spu && subpic)
1048         {
1049             subpicture_Delete(subpic);
1050             subpic = NULL;
1051         }
1052         if (!sys->display.filtered)
1053             return VLC_EGENERIC;
1054     }
1055
1056     vout_chrono_Stop(&vout->p->render);
1057 #if 0
1058         {
1059         static int i = 0;
1060         if (((i++)%10) == 0)
1061             msg_Info(vout, "render: avg %d ms var %d ms",
1062                      (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
1063         }
1064 #endif
1065
1066     /* Wait the real date (for rendering jitter) */
1067 #if 0
1068     mtime_t delay = direct->date - mdate();
1069     if (delay < 1000)
1070         msg_Warn(vout, "picture is late (%lld ms)", delay / 1000);
1071 #endif
1072     if (!is_forced)
1073         mwait(todisplay->date);
1074
1075     /* Display the direct buffer returned by vout_RenderPicture */
1076     vout->p->displayed.date = mdate();
1077     vout_display_Display(vd,
1078                          sys->display.filtered ? sys->display.filtered
1079                                                 : todisplay,
1080                          subpic);
1081     sys->display.filtered = NULL;
1082
1083     vout_statistic_AddDisplayed(&vout->p->statistic, 1);
1084
1085     return VLC_SUCCESS;
1086 }
1087
1088 static int ThreadDisplayPicture(vout_thread_t *vout, mtime_t *deadline)
1089 {
1090     bool frame_by_frame = !deadline;
1091     bool paused = vout->p->pause.is_on;
1092     bool first = !vout->p->displayed.current;
1093
1094     if (first)
1095         if (ThreadDisplayPreparePicture(vout, true, frame_by_frame)) /* FIXME not sure it is ok */
1096             return VLC_EGENERIC;
1097
1098     if (!paused || frame_by_frame)
1099         while (!vout->p->displayed.next && !ThreadDisplayPreparePicture(vout, false, frame_by_frame))
1100             ;
1101
1102     const mtime_t date = mdate();
1103     const mtime_t render_delay = vout_chrono_GetHigh(&vout->p->render) + VOUT_MWAIT_TOLERANCE;
1104
1105     bool drop_next_frame = frame_by_frame;
1106     mtime_t date_next = VLC_TS_INVALID;
1107     if (!paused && vout->p->displayed.next) {
1108         date_next = vout->p->displayed.next->date - render_delay;
1109         if (date_next /* + 0 FIXME */ <= date)
1110             drop_next_frame = true;
1111     }
1112
1113     /* FIXME/XXX we must redisplay the last decoded picture (because
1114      * of potential vout updated, or filters update or SPU update)
1115      * For now a high update period is needed but it could be removed
1116      * if and only if:
1117      * - vout module emits events from theselves.
1118      * - *and* SPU is modified to emit an event or a deadline when needed.
1119      *
1120      * So it will be done later.
1121      */
1122     bool refresh = false;
1123
1124     mtime_t date_refresh = VLC_TS_INVALID;
1125     if (vout->p->displayed.date > VLC_TS_INVALID) {
1126         date_refresh = vout->p->displayed.date + VOUT_REDISPLAY_DELAY - render_delay;
1127         refresh = date_refresh <= date;
1128     }
1129
1130     if (!first && !refresh && !drop_next_frame) {
1131         if (!frame_by_frame) {
1132             if (date_refresh != VLC_TS_INVALID)
1133                 *deadline = date_refresh;
1134             if (date_next != VLC_TS_INVALID && date_next < *deadline)
1135                 *deadline = date_next;
1136         }
1137         return VLC_EGENERIC;
1138     }
1139
1140     if (drop_next_frame) {
1141         picture_Release(vout->p->displayed.current);
1142         vout->p->displayed.current = vout->p->displayed.next;
1143         vout->p->displayed.next    = NULL;
1144     }
1145
1146     if (!vout->p->displayed.current)
1147         return VLC_EGENERIC;
1148
1149     /* display the picture immediately */
1150     bool is_forced = frame_by_frame || (!drop_next_frame && refresh) || vout->p->displayed.current->b_force;
1151     return ThreadDisplayRenderPicture(vout, is_forced);
1152 }
1153
1154 static void ThreadDisplaySubpicture(vout_thread_t *vout,
1155                                     subpicture_t *subpicture)
1156 {
1157     spu_PutSubpicture(vout->p->spu, subpicture);
1158 }
1159
1160 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
1161 {
1162     spu_ClearChannel(vout->p->spu, channel);
1163 }
1164
1165 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
1166 {
1167     if (!vout->p->title.show)
1168         return;
1169
1170     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
1171                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
1172                  string);
1173 }
1174
1175 static void ThreadChangeSubSources(vout_thread_t *vout, const char *filters)
1176 {
1177     spu_ChangeSources(vout->p->spu, filters);
1178 }
1179
1180 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
1181 {
1182     spu_ChangeFilters(vout->p->spu, filters);
1183 }
1184
1185 static void ThreadChangeSubMargin(vout_thread_t *vout, int margin)
1186 {
1187     spu_ChangeMargin(vout->p->spu, margin);
1188 }
1189
1190 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
1191 {
1192     assert(!vout->p->pause.is_on || !is_paused);
1193
1194     if (vout->p->pause.is_on) {
1195         const mtime_t duration = date - vout->p->pause.date;
1196
1197         if (vout->p->step.timestamp > VLC_TS_INVALID)
1198             vout->p->step.timestamp += duration;
1199         if (vout->p->step.last > VLC_TS_INVALID)
1200             vout->p->step.last += duration;
1201         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
1202         if (vout->p->displayed.decoded)
1203             vout->p->displayed.decoded->date += duration;
1204         spu_OffsetSubtitleDate(vout->p->spu, duration);
1205
1206         ThreadFilterFlush(vout, false);
1207     } else {
1208         vout->p->step.timestamp = VLC_TS_INVALID;
1209         vout->p->step.last      = VLC_TS_INVALID;
1210     }
1211     vout->p->pause.is_on = is_paused;
1212     vout->p->pause.date  = date;
1213 }
1214
1215 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
1216 {
1217     vout->p->step.timestamp = VLC_TS_INVALID;
1218     vout->p->step.last      = VLC_TS_INVALID;
1219
1220     ThreadFilterFlush(vout, false); /* FIXME too much */
1221
1222     picture_t *last = vout->p->displayed.decoded;
1223     if (last) {
1224         if (( below && last->date <= date) ||
1225             (!below && last->date >= date)) {
1226             picture_Release(last);
1227
1228             vout->p->displayed.decoded   = NULL;
1229             vout->p->displayed.date      = VLC_TS_INVALID;
1230             vout->p->displayed.timestamp = VLC_TS_INVALID;
1231         }
1232     }
1233
1234     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
1235 }
1236
1237 static void ThreadReset(vout_thread_t *vout)
1238 {
1239     ThreadFlush(vout, true, INT64_MAX);
1240     if (vout->p->decoder_pool)
1241         picture_pool_NonEmpty(vout->p->decoder_pool, true);
1242     vout->p->pause.is_on = false;
1243     vout->p->pause.date  = mdate();
1244 }
1245
1246 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
1247 {
1248     *duration = 0;
1249
1250     if (vout->p->step.last <= VLC_TS_INVALID)
1251         vout->p->step.last = vout->p->displayed.timestamp;
1252
1253     if (ThreadDisplayPicture(vout, NULL))
1254         return;
1255
1256     vout->p->step.timestamp = vout->p->displayed.timestamp;
1257
1258     if (vout->p->step.last > VLC_TS_INVALID &&
1259         vout->p->step.timestamp > vout->p->step.last) {
1260         *duration = vout->p->step.timestamp - vout->p->step.last;
1261         vout->p->step.last = vout->p->step.timestamp;
1262         /* TODO advance subpicture by the duration ... */
1263     }
1264 }
1265
1266 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
1267 {
1268     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
1269 }
1270
1271 static void ThreadChangeWindowState(vout_thread_t *vout, unsigned state)
1272 {
1273     vout_SetWindowState(vout->p->display.vd, state);
1274 }
1275
1276 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
1277 {
1278     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
1279 }
1280
1281 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
1282 {
1283     if (num * 10 < den) {
1284         num = den;
1285         den *= 10;
1286     } else if (num > den * 10) {
1287         num = den * 10;
1288     }
1289
1290     vout_SetDisplayZoom(vout->p->display.vd, num, den);
1291 }
1292
1293 static void ThreadChangeAspectRatio(vout_thread_t *vout,
1294                                     unsigned num, unsigned den)
1295 {
1296     vout_SetDisplayAspect(vout->p->display.vd, num, den);
1297 }
1298
1299
1300 static void ThreadExecuteCropWindow(vout_thread_t *vout,
1301                                     unsigned x, unsigned y,
1302                                     unsigned width, unsigned height)
1303 {
1304     vout_SetDisplayCrop(vout->p->display.vd, 0, 0,
1305                         x, y, width, height);
1306 }
1307 static void ThreadExecuteCropBorder(vout_thread_t *vout,
1308                                     unsigned left, unsigned top,
1309                                     unsigned right, unsigned bottom)
1310 {
1311     msg_Err(vout, "ThreadExecuteCropBorder %d.%d %dx%d", left, top, right, bottom);
1312     vout_SetDisplayCrop(vout->p->display.vd, 0, 0,
1313                         left, top, -(int)right, -(int)bottom);
1314 }
1315
1316 static void ThreadExecuteCropRatio(vout_thread_t *vout,
1317                                    unsigned num, unsigned den)
1318 {
1319     vout_SetDisplayCrop(vout->p->display.vd, num, den,
1320                         0, 0, 0, 0);
1321 }
1322
1323 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
1324 {
1325     vlc_mouse_Init(&vout->p->mouse);
1326     vout->p->decoder_fifo = picture_fifo_New();
1327     vout->p->decoder_pool = NULL;
1328     vout->p->display_pool = NULL;
1329     vout->p->private_pool = NULL;
1330
1331     vout->p->filter.configuration = NULL;
1332     video_format_Copy(&vout->p->filter.format, &vout->p->original);
1333     vout->p->filter.chain_static =
1334         filter_chain_New( vout, "video filter2", true,
1335                           VoutVideoFilterStaticAllocationSetup, NULL, vout);
1336     vout->p->filter.chain_interactive =
1337         filter_chain_New( vout, "video filter2", true,
1338                           VoutVideoFilterInteractiveAllocationSetup, NULL, vout);
1339
1340     vout_display_state_t state_default;
1341     if (!state) {
1342         var_Create(vout, "video-wallpaper", VLC_VAR_BOOL|VLC_VAR_DOINHERIT);
1343         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
1344
1345         bool below = var_InheritBool(vout, "video-wallpaper");
1346         bool above = var_CreateGetBool(vout, "video-on-top");
1347
1348         state_default.wm_state = below ? VOUT_WINDOW_STATE_BELOW
1349                                : above ? VOUT_WINDOW_STATE_ABOVE
1350                                : VOUT_WINDOW_STATE_NORMAL;
1351         state_default.sar.num = 0;
1352         state_default.sar.den = 0;
1353
1354         state = &state_default;
1355     }
1356
1357     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
1358         return VLC_EGENERIC;
1359     if (vout_InitWrapper(vout))
1360         return VLC_EGENERIC;
1361     assert(vout->p->decoder_pool);
1362
1363     vout->p->displayed.current       = NULL;
1364     vout->p->displayed.next          = NULL;
1365     vout->p->displayed.decoded       = NULL;
1366     vout->p->displayed.date          = VLC_TS_INVALID;
1367     vout->p->displayed.timestamp     = VLC_TS_INVALID;
1368     vout->p->displayed.is_interlaced = false;
1369
1370     vout->p->step.last               = VLC_TS_INVALID;
1371     vout->p->step.timestamp          = VLC_TS_INVALID;
1372
1373     vout->p->spu_blend_chroma        = 0;
1374     vout->p->spu_blend               = NULL;
1375
1376     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
1377     return VLC_SUCCESS;
1378 }
1379
1380 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1381 {
1382     if (vout->p->spu_blend)
1383         filter_DeleteBlend(vout->p->spu_blend);
1384
1385     /* Destroy translation tables */
1386     if (vout->p->display.vd) {
1387         if (vout->p->decoder_pool) {
1388             ThreadFlush(vout, true, INT64_MAX);
1389             vout_EndWrapper(vout);
1390         }
1391         vout_CloseWrapper(vout, state);
1392     }
1393
1394     /* Destroy the video filters2 */
1395     filter_chain_Delete(vout->p->filter.chain_interactive);
1396     filter_chain_Delete(vout->p->filter.chain_static);
1397     video_format_Clean(&vout->p->filter.format);
1398     free(vout->p->filter.configuration);
1399
1400     if (vout->p->decoder_fifo)
1401         picture_fifo_Delete(vout->p->decoder_fifo);
1402     assert(!vout->p->decoder_pool);
1403 }
1404
1405 static void ThreadInit(vout_thread_t *vout)
1406 {
1407     vout->p->window.is_unused = true;
1408     vout->p->window.object    = NULL;
1409     vout->p->dead             = false;
1410     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1411     vout->p->pause.is_on      = false;
1412     vout->p->pause.date       = VLC_TS_INVALID;
1413
1414     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1415 }
1416
1417 static void ThreadClean(vout_thread_t *vout)
1418 {
1419     if (vout->p->window.object) {
1420         assert(vout->p->window.is_unused);
1421         vout_window_Delete(vout->p->window.object);
1422     }
1423     vout_chrono_Clean(&vout->p->render);
1424     vout->p->dead = true;
1425     vout_control_Dead(&vout->p->control);
1426 }
1427
1428 static int ThreadReinit(vout_thread_t *vout,
1429                         const vout_configuration_t *cfg)
1430 {
1431     video_format_t original;
1432     if (VoutValidateFormat(&original, cfg->fmt)) {
1433         ThreadStop(vout, NULL);
1434         ThreadClean(vout);
1435         return VLC_EGENERIC;
1436     }
1437     /* We ignore crop/ar changes at this point, they are dynamically supported */
1438     VideoFormatCopyCropAr(&vout->p->original, &original);
1439     if (video_format_IsSimilar(&original, &vout->p->original)) {
1440         if (cfg->dpb_size <= vout->p->dpb_size)
1441             return VLC_SUCCESS;
1442         msg_Warn(vout, "DPB need to be increased");
1443     }
1444
1445     vout_display_state_t state;
1446     memset(&state, 0, sizeof(state));
1447
1448     ThreadStop(vout, &state);
1449
1450     if (!state.cfg.is_fullscreen) {
1451         state.cfg.display.width  = 0;
1452         state.cfg.display.height = 0;
1453     }
1454     state.sar.num = 0;
1455     state.sar.den = 0;
1456     /* FIXME current vout "variables" are not in sync here anymore
1457      * and I am not sure what to do */
1458
1459     vout->p->original = original;
1460     vout->p->dpb_size = cfg->dpb_size;
1461     if (ThreadStart(vout, &state)) {
1462         ThreadClean(vout);
1463         return VLC_EGENERIC;
1464     }
1465     return VLC_SUCCESS;
1466 }
1467
1468 static int ThreadControl(vout_thread_t *vout, vout_control_cmd_t cmd)
1469 {
1470     switch(cmd.type) {
1471     case VOUT_CONTROL_INIT:
1472         ThreadInit(vout);
1473         if (!ThreadStart(vout, NULL))
1474             break;
1475     case VOUT_CONTROL_CLEAN:
1476         ThreadStop(vout, NULL);
1477         ThreadClean(vout);
1478         return 1;
1479     case VOUT_CONTROL_REINIT:
1480         if (ThreadReinit(vout, cmd.u.cfg))
1481             return 1;
1482         break;
1483     case VOUT_CONTROL_SUBPICTURE:
1484         ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1485         cmd.u.subpicture = NULL;
1486         break;
1487     case VOUT_CONTROL_FLUSH_SUBPICTURE:
1488         ThreadFlushSubpicture(vout, cmd.u.integer);
1489         break;
1490     case VOUT_CONTROL_OSD_TITLE:
1491         ThreadDisplayOsdTitle(vout, cmd.u.string);
1492         break;
1493     case VOUT_CONTROL_CHANGE_FILTERS:
1494         ThreadChangeFilters(vout, NULL, cmd.u.string, false);
1495         break;
1496     case VOUT_CONTROL_CHANGE_SUB_SOURCES:
1497         ThreadChangeSubSources(vout, cmd.u.string);
1498         break;
1499     case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1500         ThreadChangeSubFilters(vout, cmd.u.string);
1501         break;
1502     case VOUT_CONTROL_CHANGE_SUB_MARGIN:
1503         ThreadChangeSubMargin(vout, cmd.u.integer);
1504         break;
1505     case VOUT_CONTROL_PAUSE:
1506         ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1507         break;
1508     case VOUT_CONTROL_FLUSH:
1509         ThreadFlush(vout, false, cmd.u.time);
1510         break;
1511     case VOUT_CONTROL_RESET:
1512         ThreadReset(vout);
1513         break;
1514     case VOUT_CONTROL_STEP:
1515         ThreadStep(vout, cmd.u.time_ptr);
1516         break;
1517     case VOUT_CONTROL_FULLSCREEN:
1518         ThreadChangeFullscreen(vout, cmd.u.boolean);
1519         break;
1520     case VOUT_CONTROL_WINDOW_STATE:
1521         ThreadChangeWindowState(vout, cmd.u.integer);
1522         break;
1523     case VOUT_CONTROL_DISPLAY_FILLED:
1524         ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1525         break;
1526     case VOUT_CONTROL_ZOOM:
1527         ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1528         break;
1529     case VOUT_CONTROL_ASPECT_RATIO:
1530         ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1531         break;
1532     case VOUT_CONTROL_CROP_RATIO:
1533         ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1534         break;
1535     case VOUT_CONTROL_CROP_WINDOW:
1536         ThreadExecuteCropWindow(vout,
1537                 cmd.u.window.x, cmd.u.window.y,
1538                 cmd.u.window.width, cmd.u.window.height);
1539         break;
1540     case VOUT_CONTROL_CROP_BORDER:
1541         ThreadExecuteCropBorder(vout,
1542                 cmd.u.border.left,  cmd.u.border.top,
1543                 cmd.u.border.right, cmd.u.border.bottom);
1544         break;
1545     default:
1546         break;
1547     }
1548     vout_control_cmd_Clean(&cmd);
1549     return 0;
1550 }
1551
1552 /*****************************************************************************
1553  * Thread: video output thread
1554  *****************************************************************************
1555  * Video output thread. This function does only returns when the thread is
1556  * terminated. It handles the pictures arriving in the video heap and the
1557  * display device events.
1558  *****************************************************************************/
1559 static void *Thread(void *object)
1560 {
1561     vout_thread_t *vout = object;
1562     vout_thread_sys_t *sys = vout->p;
1563
1564     vout_interlacing_support_t interlacing = {
1565         .is_interlaced = false,
1566         .date = mdate(),
1567     };
1568
1569     mtime_t deadline = VLC_TS_INVALID;
1570     for (;;) {
1571         vout_control_cmd_t cmd;
1572         /* FIXME remove thoses ugly timeouts */
1573         while (!vout_control_Pop(&sys->control, &cmd, deadline, 100000))
1574             if (ThreadControl(vout, cmd))
1575                 return NULL;
1576
1577         vlc_mutex_lock(&sys->picture_lock);
1578
1579         deadline = VLC_TS_INVALID;
1580         while (!ThreadDisplayPicture(vout, &deadline))
1581             ;
1582
1583         const bool picture_interlaced = sys->displayed.is_interlaced;
1584
1585         vlc_mutex_unlock(&sys->picture_lock);
1586
1587         vout_SetInterlacingState(vout, &interlacing, picture_interlaced);
1588         vout_ManageWrapper(vout);
1589     }
1590 }